diff options
Diffstat (limited to 'gdb')
| -rw-r--r-- | gdb/ChangeLog | 10 | ||||
| -rw-r--r-- | gdb/ada-exp.y | 486 | ||||
| -rw-r--r-- | gdb/ada-lang.c | 9437 | ||||
| -rw-r--r-- | gdb/ada-lang.h | 338 | ||||
| -rw-r--r-- | gdb/ada-lex.l | 410 | ||||
| -rw-r--r-- | gdb/ada-tasks.c | 1509 | ||||
| -rw-r--r-- | gdb/ada-typeprint.c | 159 | ||||
| -rw-r--r-- | gdb/ada-valprint.c | 285 |
8 files changed, 7709 insertions, 4925 deletions
diff --git a/gdb/ChangeLog b/gdb/ChangeLog index 8b91f0d..fbaf142 100644 --- a/gdb/ChangeLog +++ b/gdb/ChangeLog @@ -1,3 +1,13 @@ +2004-06-02 Paul N. Hilfinger <hilfinger@gnat.com> + + * ada-exp.y: Synchronize with current ACT sources. + * ada-lang.c: Ditto. + * ada-lang.h: Ditto. + * ada-lex.l: Ditto. + * ada-tasks.c: Ditto. + * ada-typeprint.c: Ditto. + * ada-valprint.c: Ditto. + 2004-06-01 Jim Blandy <jimb@redhat.com> * ppc-tdep.h: Delete unused 'regoff' member. diff --git a/gdb/ada-exp.y b/gdb/ada-exp.y index f4cbb37..04a3950 100644 --- a/gdb/ada-exp.y +++ b/gdb/ada-exp.y @@ -1,6 +1,6 @@ /* YACC parser for Ada expressions, for GDB. - Copyright (C) 1986, 1989, 1990, 1991, 1993, 1994, 1997, 2000, 2003 - Free Software Foundation, Inc. + Copyright (C) 1986, 1989, 1990, 1991, 1993, 1994, 1997, 2000, 2003, + 2004 Free Software Foundation, Inc. This file is part of GDB. @@ -34,7 +34,7 @@ Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. */ with include files (<malloc.h> and <stdlib.h> for example) just became too messy, particularly when such includes can be inserted at random times by the parser generator. */ - + %{ #include "defs.h" @@ -56,9 +56,9 @@ Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. */ yacc generated parsers in gdb. These are only the variables produced by yacc. If other parser generators (bison, byacc, etc) produce additional global names that conflict at link time, then those parser - generators need to be fixed instead of adding those names to this list. */ + generators need to be fixed instead of adding those names to this list. */ -/* NOTE: This is clumsy, especially since BISON and FLEX provide --prefix +/* NOTE: This is clumsy, especially since BISON and FLEX provide --prefix options. I presume we are maintaining it to accommodate systems without BISON? (PNH) */ @@ -69,13 +69,13 @@ Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. */ #define yylval ada_lval #define yychar ada_char #define yydebug ada_debug -#define yypact ada_pact -#define yyr1 ada_r1 -#define yyr2 ada_r2 -#define yydef ada_def -#define yychk ada_chk -#define yypgo ada_pgo -#define yyact ada_act +#define yypact ada_pact +#define yyr1 ada_r1 +#define yyr2 ada_r2 +#define yydef ada_def +#define yychk ada_chk +#define yypgo ada_pgo +#define yyact ada_act #define yyexca ada_exca #define yyerrflag ada_errflag #define yynerrs ada_nerrs @@ -101,15 +101,15 @@ Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. */ #define YYFPRINTF parser_fprintf struct name_info { - struct symbol* sym; - struct minimal_symbol* msym; - struct block* block; + struct symbol *sym; + struct minimal_symbol *msym; + struct block *block; struct stoken stoken; }; /* If expression is in the context of TYPE'(...), then TYPE, else - * NULL. */ -static struct type* type_qualifier; + * NULL. */ +static struct type *type_qualifier; int yyparse (void); @@ -119,19 +119,15 @@ void yyerror (char *); static struct stoken string_to_operator (struct stoken); -static void write_attribute_call0 (enum ada_attribute); - -static void write_attribute_call1 (enum ada_attribute, LONGEST); - -static void write_attribute_calln (enum ada_attribute, int); +static void write_int (LONGEST, struct type *); -static void write_object_renaming (struct block*, struct symbol*); +static void write_object_renaming (struct block *, struct symbol *, int); -static void write_var_from_name (struct block*, struct name_info); +static void write_var_from_name (struct block *, struct name_info); static LONGEST -convert_char_literal (struct type*, LONGEST); -%} +convert_char_literal (struct type *, LONGEST); +%} %union { @@ -169,9 +165,9 @@ convert_char_literal (struct type*, LONGEST); Contexts where this distinction is not important can use the nonterminal "name", which matches either NAME or TYPENAME. */ -%token <sval> STRING +%token <sval> STRING %token <ssym> NAME DOT_ID OBJECT_RENAMING -%type <bval> block +%type <bval> block %type <lval> arglist tick_arglist %type <tval> save_qualifier @@ -180,9 +176,7 @@ convert_char_literal (struct type*, LONGEST); /* Special type cases, put in to allow the parser to distinguish different legal basetypes. */ -%token <lval> LAST REGNAME - -%token <ivar> INTERNAL_VARIABLE +%token <sval> SPECIAL_VARIABLE %nonassoc ASSIGN %left _AND_ OR XOR THEN ELSE @@ -192,9 +186,9 @@ convert_char_literal (struct type*, LONGEST); %left UNARY %left '*' '/' MOD REM %right STARSTAR ABS NOT - /* The following are right-associative only so that reductions at this - precedence have lower precedence than '.' and '('. The syntax still - forces a.b.c, e.g., to be LEFT-associated. */ + /* The following are right-associative only so that reductions at this + precedence have lower precedence than '.' and '('. The syntax still + forces a.b.c, e.g., to be LEFT-associated. */ %right TICK_ACCESS TICK_ADDRESS TICK_FIRST TICK_LAST TICK_LENGTH %right TICK_MAX TICK_MIN TICK_MODULUS %right TICK_POS TICK_RANGE TICK_SIZE TICK_TAG TICK_VAL @@ -225,7 +219,7 @@ simple_exp : simple_exp DOT_ALL simple_exp : simple_exp DOT_ID { write_exp_elt_opcode (STRUCTOP_STRUCT); write_exp_string ($2.stoken); - write_exp_elt_opcode (STRUCTOP_STRUCT); + write_exp_elt_opcode (STRUCTOP_STRUCT); } ; @@ -241,17 +235,15 @@ simple_exp : type '(' exp ')' { write_exp_elt_opcode (UNOP_CAST); write_exp_elt_type ($1); - write_exp_elt_opcode (UNOP_CAST); + write_exp_elt_opcode (UNOP_CAST); } ; simple_exp : type '\'' save_qualifier { type_qualifier = $1; } '(' exp ')' { - /* write_exp_elt_opcode (UNOP_QUAL); */ - /* FIXME: UNOP_QUAL should be defined in expression.h */ + write_exp_elt_opcode (UNOP_QUAL); write_exp_elt_type ($1); - /* write_exp_elt_opcode (UNOP_QUAL); */ - /* FIXME: UNOP_QUAL should be defined in expression.h */ + write_exp_elt_opcode (UNOP_QUAL); type_qualifier = $3; } ; @@ -267,34 +259,16 @@ simple_exp : simple_exp : '(' exp1 ')' { } ; -simple_exp : variable +simple_exp : variable ; -simple_exp: REGNAME /* GDB extension */ - { write_exp_elt_opcode (OP_REGISTER); - write_exp_elt_longcst ((LONGEST) $1); - write_exp_elt_opcode (OP_REGISTER); - } +simple_exp: SPECIAL_VARIABLE /* Various GDB extensions */ + { write_dollar_variable ($1); } ; -simple_exp: INTERNAL_VARIABLE /* GDB extension */ - { write_exp_elt_opcode (OP_INTERNALVAR); - write_exp_elt_intern ($1); - write_exp_elt_opcode (OP_INTERNALVAR); - } - ; - - exp : simple_exp ; -simple_exp: LAST - { write_exp_elt_opcode (OP_LAST); - write_exp_elt_longcst ((LONGEST) $1); - write_exp_elt_opcode (OP_LAST); - } - ; - exp : exp ASSIGN exp /* Extension for convenience */ { write_exp_elt_opcode (BINOP_ASSIGN); } ; @@ -332,7 +306,7 @@ exp : '{' type '}' exp %prec '.' /* GDB extension */ { write_exp_elt_opcode (UNOP_MEMVAL); write_exp_elt_type ($2); - write_exp_elt_opcode (UNOP_MEMVAL); + write_exp_elt_opcode (UNOP_MEMVAL); } ; @@ -387,42 +361,32 @@ exp : exp LEQ exp ; exp : exp IN exp DOTDOT exp - { /*write_exp_elt_opcode (TERNOP_MBR); */ } - /* FIXME: TERNOP_MBR should be defined in - expression.h */ + { write_exp_elt_opcode (TERNOP_IN_RANGE); } | exp IN exp TICK_RANGE tick_arglist - { /*write_exp_elt_opcode (BINOP_MBR); */ - /* FIXME: BINOP_MBR should be defined in expression.h */ + { write_exp_elt_opcode (BINOP_IN_BOUNDS); write_exp_elt_longcst ((LONGEST) $5); - /*write_exp_elt_opcode (BINOP_MBR); */ + write_exp_elt_opcode (BINOP_IN_BOUNDS); } | exp IN TYPENAME %prec TICK_ACCESS - { /*write_exp_elt_opcode (UNOP_MBR); */ - /* FIXME: UNOP_QUAL should be defined in expression.h */ + { write_exp_elt_opcode (UNOP_IN_RANGE); write_exp_elt_type ($3); - /* write_exp_elt_opcode (UNOP_MBR); */ - /* FIXME: UNOP_MBR should be defined in expression.h */ + write_exp_elt_opcode (UNOP_IN_RANGE); } | exp NOT IN exp DOTDOT exp - { /*write_exp_elt_opcode (TERNOP_MBR); */ - /* FIXME: TERNOP_MBR should be defined in expression.h */ - write_exp_elt_opcode (UNOP_LOGICAL_NOT); + { write_exp_elt_opcode (TERNOP_IN_RANGE); + write_exp_elt_opcode (UNOP_LOGICAL_NOT); } | exp NOT IN exp TICK_RANGE tick_arglist - { /* write_exp_elt_opcode (BINOP_MBR); */ - /* FIXME: BINOP_MBR should be defined in expression.h */ + { write_exp_elt_opcode (BINOP_IN_BOUNDS); write_exp_elt_longcst ((LONGEST) $6); - /*write_exp_elt_opcode (BINOP_MBR);*/ - /* FIXME: BINOP_MBR should be defined in expression.h */ - write_exp_elt_opcode (UNOP_LOGICAL_NOT); + write_exp_elt_opcode (BINOP_IN_BOUNDS); + write_exp_elt_opcode (UNOP_LOGICAL_NOT); } | exp NOT IN TYPENAME %prec TICK_ACCESS - { /*write_exp_elt_opcode (UNOP_MBR);*/ - /* FIXME: UNOP_MBR should be defined in expression.h */ + { write_exp_elt_opcode (UNOP_IN_RANGE); write_exp_elt_type ($4); - /* write_exp_elt_opcode (UNOP_MBR);*/ - /* FIXME: UNOP_MBR should be defined in expression.h */ - write_exp_elt_opcode (UNOP_LOGICAL_NOT); + write_exp_elt_opcode (UNOP_IN_RANGE); + write_exp_elt_opcode (UNOP_LOGICAL_NOT); } ; @@ -438,7 +402,7 @@ exp : exp '>' exp { write_exp_elt_opcode (BINOP_GTR); } ; -exp : exp _AND_ exp /* Fix for Ada elementwise AND. */ +exp : exp _AND_ exp /* Fix for Ada elementwise AND. */ { write_exp_elt_opcode (BINOP_BITWISE_AND); } ; @@ -450,7 +414,7 @@ exp : exp OR exp /* Fix for Ada elementwise OR */ { write_exp_elt_opcode (BINOP_BITWISE_IOR); } ; -exp : exp OR ELSE exp +exp : exp OR ELSE exp { write_exp_elt_opcode (BINOP_LOGICAL_OR); } ; @@ -467,31 +431,37 @@ simple_exp : simple_exp TICK_ACCESS write_exp_elt_opcode (UNOP_CAST); } | simple_exp TICK_FIRST tick_arglist - { write_attribute_call1 (ATR_FIRST, $3); } + { write_int ($3, builtin_type_int); + write_exp_elt_opcode (OP_ATR_FIRST); } | simple_exp TICK_LAST tick_arglist - { write_attribute_call1 (ATR_LAST, $3); } + { write_int ($3, builtin_type_int); + write_exp_elt_opcode (OP_ATR_LAST); } | simple_exp TICK_LENGTH tick_arglist - { write_attribute_call1 (ATR_LENGTH, $3); } - | simple_exp TICK_SIZE - { write_attribute_call0 (ATR_SIZE); } + { write_int ($3, builtin_type_int); + write_exp_elt_opcode (OP_ATR_LENGTH); } + | simple_exp TICK_SIZE + { write_exp_elt_opcode (OP_ATR_SIZE); } | simple_exp TICK_TAG - { write_attribute_call0 (ATR_TAG); } + { write_exp_elt_opcode (OP_ATR_TAG); } | opt_type_prefix TICK_MIN '(' exp ',' exp ')' - { write_attribute_calln (ATR_MIN, 2); } + { write_exp_elt_opcode (OP_ATR_MIN); } | opt_type_prefix TICK_MAX '(' exp ',' exp ')' - { write_attribute_calln (ATR_MAX, 2); } + { write_exp_elt_opcode (OP_ATR_MAX); } | opt_type_prefix TICK_POS '(' exp ')' - { write_attribute_calln (ATR_POS, 1); } + { write_exp_elt_opcode (OP_ATR_POS); } | type_prefix TICK_FIRST tick_arglist - { write_attribute_call1 (ATR_FIRST, $3); } + { write_int ($3, builtin_type_int); + write_exp_elt_opcode (OP_ATR_FIRST); } | type_prefix TICK_LAST tick_arglist - { write_attribute_call1 (ATR_LAST, $3); } + { write_int ($3, builtin_type_int); + write_exp_elt_opcode (OP_ATR_LAST); } | type_prefix TICK_LENGTH tick_arglist - { write_attribute_call1 (ATR_LENGTH, $3); } + { write_int ($3, builtin_type_int); + write_exp_elt_opcode (OP_ATR_LENGTH); } | type_prefix TICK_VAL '(' exp ')' - { write_attribute_calln (ATR_VAL, 1); } - | type_prefix TICK_MODULUS - { write_attribute_call0 (ATR_MODULUS); } + { write_exp_elt_opcode (OP_ATR_VAL); } + | type_prefix TICK_MODULUS + { write_exp_elt_opcode (OP_ATR_MODULUS); } ; tick_arglist : %prec '(' @@ -509,74 +479,42 @@ type_prefix : opt_type_prefix : type_prefix - | /* EMPTY */ + | /* EMPTY */ { write_exp_elt_opcode (OP_TYPE); write_exp_elt_type (builtin_type_void); write_exp_elt_opcode (OP_TYPE); } ; - + exp : INT - { write_exp_elt_opcode (OP_LONG); - write_exp_elt_type ($1.type); - write_exp_elt_longcst ((LONGEST)($1.val)); - write_exp_elt_opcode (OP_LONG); - } + { write_int ((LONGEST) $1.val, $1.type); } ; exp : CHARLIT - { write_exp_elt_opcode (OP_LONG); - if (type_qualifier == NULL) - write_exp_elt_type ($1.type); - else - write_exp_elt_type (type_qualifier); - write_exp_elt_longcst - (convert_char_literal (type_qualifier, $1.val)); - write_exp_elt_opcode (OP_LONG); - } + { write_int (convert_char_literal (type_qualifier, $1.val), + (type_qualifier == NULL) + ? $1.type : type_qualifier); + } ; - + exp : FLOAT { write_exp_elt_opcode (OP_DOUBLE); write_exp_elt_type ($1.type); write_exp_elt_dblcst ($1.dval); - write_exp_elt_opcode (OP_DOUBLE); + write_exp_elt_opcode (OP_DOUBLE); } ; exp : NULL_PTR - { write_exp_elt_opcode (OP_LONG); - write_exp_elt_type (builtin_type_int); - write_exp_elt_longcst ((LONGEST)(0)); - write_exp_elt_opcode (OP_LONG); - } + { write_int (0, builtin_type_int); } ; exp : STRING - { /* Ada strings are converted into array constants - a lower bound of 1. Thus, the array upper bound - is the string length. */ - char *sp = $1.ptr; int count; - if ($1.length == 0) - { /* One dummy character for the type */ - write_exp_elt_opcode (OP_LONG); - write_exp_elt_type (builtin_type_ada_char); - write_exp_elt_longcst ((LONGEST)(0)); - write_exp_elt_opcode (OP_LONG); - } - for (count = $1.length; count > 0; count -= 1) - { - write_exp_elt_opcode (OP_LONG); - write_exp_elt_type (builtin_type_ada_char); - write_exp_elt_longcst ((LONGEST)(*sp)); - sp += 1; - write_exp_elt_opcode (OP_LONG); - } - write_exp_elt_opcode (OP_ARRAY); - write_exp_elt_longcst ((LONGEST) 1); - write_exp_elt_longcst ((LONGEST) ($1.length)); - write_exp_elt_opcode (OP_ARRAY); - } + { + write_exp_elt_opcode (OP_STRING); + write_exp_string ($1); + write_exp_elt_opcode (OP_STRING); + } ; exp : NEW TYPENAME @@ -586,9 +524,12 @@ exp : NEW TYPENAME variable: NAME { write_var_from_name (NULL, $1); } | block NAME /* GDB extension */ { write_var_from_name ($1, $2); } - | OBJECT_RENAMING { write_object_renaming (NULL, $1.sym); } - | block OBJECT_RENAMING - { write_object_renaming ($1, $2.sym); } + | OBJECT_RENAMING + { write_object_renaming (NULL, $1.sym, + MAX_RENAMING_CHAIN_LENGTH); } + | block OBJECT_RENAMING + { write_object_renaming ($1, $2.sym, + MAX_RENAMING_CHAIN_LENGTH); } ; any_name : NAME { } @@ -605,14 +546,14 @@ block : BLOCKNAME /* GDB extension */ type : TYPENAME { $$ = $1; } | block TYPENAME { $$ = $2; } - | TYPENAME TICK_ACCESS + | TYPENAME TICK_ACCESS { $$ = lookup_pointer_type ($1); } | block TYPENAME TICK_ACCESS { $$ = lookup_pointer_type ($2); } ; /* Some extensions borrowed from C, for the benefit of those who find they - can't get used to Ada notation in GDB. */ + can't get used to Ada notation in GDB. */ exp : '*' exp %prec '.' { write_exp_elt_opcode (UNOP_IND); } @@ -642,49 +583,51 @@ exp : '*' exp %prec '.' #define yytext ada_yytext #define yywrap ada_yywrap +static struct obstack temp_parse_space; + /* The following kludge was found necessary to prevent conflicts between */ /* defs.h and non-standard stdlib.h files. */ #define qsort __qsort__dummy #include "ada-lex.c" int -ada_parse () +ada_parse (void) { - lexer_init (yyin); /* (Re-)initialize lexer. */ + lexer_init (yyin); /* (Re-)initialize lexer. */ left_block_context = NULL; type_qualifier = NULL; - + obstack_free (&temp_parse_space, NULL); + obstack_init (&temp_parse_space); + return _ada_parse (); } void -yyerror (msg) - char *msg; +yyerror (char *msg) { error ("A %s in expression, near `%s'.", (msg ? msg : "error"), lexptr); } -/* The operator name corresponding to operator symbol STRING (adds +/* The operator name corresponding to operator symbol STRING (adds quotes and maps to lower-case). Destroys the previous contents of the array pointed to by STRING.ptr. Error if STRING does not match a valid Ada operator. Assumes that STRING.ptr points to a null-terminated string and that, if STRING is a valid operator symbol, the array pointed to by STRING.ptr contains at least - STRING.length+3 characters. */ + STRING.length+3 characters. */ static struct stoken -string_to_operator (string) - struct stoken string; +string_to_operator (struct stoken string) { int i; - for (i = 0; ada_opname_table[i].mangled != NULL; i += 1) + for (i = 0; ada_opname_table[i].encoded != NULL; i += 1) { - if (string.length == strlen (ada_opname_table[i].demangled)-2 - && strncasecmp (string.ptr, ada_opname_table[i].demangled+1, + if (string.length == strlen (ada_opname_table[i].decoded)-2 + && strncasecmp (string.ptr, ada_opname_table[i].decoded+1, string.length) == 0) { - strncpy (string.ptr, ada_opname_table[i].demangled, + strncpy (string.ptr, ada_opname_table[i].decoded, string.length+2); string.length += 2; return string; @@ -694,12 +637,11 @@ string_to_operator (string) } /* Emit expression to access an instance of SYM, in block BLOCK (if - * non-NULL), and with :: qualification ORIG_LEFT_CONTEXT. */ + * non-NULL), and with :: qualification ORIG_LEFT_CONTEXT. */ static void -write_var_from_sym (orig_left_context, block, sym) - struct block* orig_left_context; - struct block* block; - struct symbol* sym; +write_var_from_sym (struct block *orig_left_context, + struct block *block, + struct symbol *sym) { if (orig_left_context == NULL && symbol_read_needs_frame (sym)) { @@ -709,121 +651,91 @@ write_var_from_sym (orig_left_context, block, sym) } write_exp_elt_opcode (OP_VAR_VALUE); - /* We want to use the selected frame, not another more inner frame - which happens to be in the same block */ - write_exp_elt_block (NULL); + write_exp_elt_block (block); write_exp_elt_sym (sym); write_exp_elt_opcode (OP_VAR_VALUE); } -/* Emit expression to access an instance of NAME. */ +/* Emit expression to access an instance of NAME in :: context + * ORIG_LEFT_CONTEXT. If no unique symbol for NAME has been found, + * output a dummy symbol (good to the next call of ada_parse) for NAME + * in the UNDEF_DOMAIN, for later resolution by ada_resolve. */ static void -write_var_from_name (orig_left_context, name) - struct block* orig_left_context; - struct name_info name; +write_var_from_name (struct block *orig_left_context, + struct name_info name) { if (name.msym != NULL) { - write_exp_msymbol (name.msym, + write_exp_msymbol (name.msym, lookup_function_type (builtin_type_int), builtin_type_int); } - else if (name.sym == NULL) + else if (name.sym == NULL) { - /* Multiple matches: record name and starting block for later - resolution by ada_resolve. */ - /* write_exp_elt_opcode (OP_UNRESOLVED_VALUE); */ - /* FIXME: OP_UNRESOLVED_VALUE should be defined in expression.h */ + /* Multiple matches: record name and starting block for later + resolution by ada_resolve. */ + char *encoded_name = ada_encode (name.stoken.ptr); + struct symbol *sym = + obstack_alloc (&temp_parse_space, sizeof (struct symbol)); + memset (sym, 0, sizeof (struct symbol)); + SYMBOL_DOMAIN (sym) = UNDEF_DOMAIN; + SYMBOL_LINKAGE_NAME (sym) + = obsavestring (encoded_name, strlen (encoded_name), &temp_parse_space); + SYMBOL_LANGUAGE (sym) = language_ada; + + write_exp_elt_opcode (OP_VAR_VALUE); write_exp_elt_block (name.block); - /* write_exp_elt_name (name.stoken.ptr); */ - /* FIXME: write_exp_elt_name should be defined in defs.h, located in parse.c */ - /* write_exp_elt_opcode (OP_UNRESOLVED_VALUE); */ - /* FIXME: OP_UNRESOLVED_VALUE should be defined in expression.h */ + write_exp_elt_sym (sym); + write_exp_elt_opcode (OP_VAR_VALUE); } else write_var_from_sym (orig_left_context, name.block, name.sym); } -/* Write a call on parameterless attribute ATR. */ - -static void -write_attribute_call0 (atr) - enum ada_attribute atr; -{ - /* write_exp_elt_opcode (OP_ATTRIBUTE); */ - /* FIXME: OP_ATTRIBUTE should be defined in expression.h */ - write_exp_elt_longcst ((LONGEST) 0); - write_exp_elt_longcst ((LONGEST) atr); - /* write_exp_elt_opcode (OP_ATTRIBUTE); */ - /* FIXME: OP_ATTRIBUTE should be defined in expression.h */ -} - -/* Write a call on an attribute ATR with one constant integer - * parameter. */ +/* Write integer constant ARG of type TYPE. */ static void -write_attribute_call1 (atr, arg) - enum ada_attribute atr; - LONGEST arg; +write_int (LONGEST arg, struct type *type) { write_exp_elt_opcode (OP_LONG); - write_exp_elt_type (builtin_type_int); + write_exp_elt_type (type); write_exp_elt_longcst (arg); write_exp_elt_opcode (OP_LONG); - /*write_exp_elt_opcode (OP_ATTRIBUTE);*/ - /* FIXME: OP_ATTRIBUTE should be defined in expression.h */ - write_exp_elt_longcst ((LONGEST) 1); - write_exp_elt_longcst ((LONGEST) atr); - /*write_exp_elt_opcode (OP_ATTRIBUTE);*/ - /* FIXME: OP_ATTRIBUTE should be defined in expression.h */ -} - -/* Write a call on an attribute ATR with N parameters, whose code must have - * been generated previously. */ +} -static void -write_attribute_calln (atr, n) - enum ada_attribute atr; - int n; -{ - /*write_exp_elt_opcode (OP_ATTRIBUTE);*/ - /* FIXME: OP_ATTRIBUTE should be defined in expression.h */ - write_exp_elt_longcst ((LONGEST) n); - write_exp_elt_longcst ((LONGEST) atr); - /* write_exp_elt_opcode (OP_ATTRIBUTE);*/ - /* FIXME: OP_ATTRIBUTE should be defined in expression.h */ -} - -/* Emit expression corresponding to the renamed object designated by +/* Emit expression corresponding to the renamed object designated by * the type RENAMING, which must be the referent of an object renaming - * type, in the context of ORIG_LEFT_CONTEXT (?). */ + * type, in the context of ORIG_LEFT_CONTEXT. MAX_DEPTH is the maximum + * number of cascaded renamings to allow. */ static void -write_object_renaming (orig_left_context, renaming) - struct block* orig_left_context; - struct symbol* renaming; +write_object_renaming (struct block *orig_left_context, + struct symbol *renaming, int max_depth) { - const char* qualification = DEPRECATED_SYMBOL_NAME (renaming); - const char* simple_tail; - const char* expr = TYPE_FIELD_NAME (SYMBOL_TYPE (renaming), 0); - const char* suffix; - char* name; - struct symbol* sym; + const char *qualification = SYMBOL_LINKAGE_NAME (renaming); + const char *simple_tail; + const char *expr = TYPE_FIELD_NAME (SYMBOL_TYPE (renaming), 0); + const char *suffix; + char *name; + struct symbol *sym; enum { SIMPLE_INDEX, LOWER_BOUND, UPPER_BOUND } slice_state; + if (max_depth <= 0) + error ("Could not find renamed symbol"); + /* if orig_left_context is null, then use the currently selected - block, otherwise we might fail our symbol lookup below */ + block; otherwise we might fail our symbol lookup below. */ if (orig_left_context == NULL) orig_left_context = get_selected_block (NULL); - for (simple_tail = qualification + strlen (qualification); + for (simple_tail = qualification + strlen (qualification); simple_tail != qualification; simple_tail -= 1) { if (*simple_tail == '.') { simple_tail += 1; break; - } - else if (DEPRECATED_STREQN (simple_tail, "__", 2)) + } + else if (strncmp (simple_tail, "__", 2) == 0) { simple_tail += 2; break; @@ -834,72 +746,72 @@ write_object_renaming (orig_left_context, renaming) if (suffix == NULL) goto BadEncoding; - name = (char*) malloc (suffix - expr + 1); - /* add_name_string_cleanup (name); */ - /* FIXME: add_name_string_cleanup should be defined in - parser-defs.h, implemented in parse.c */ + name = (char *) obstack_alloc (&temp_parse_space, suffix - expr + 1); strncpy (name, expr, suffix-expr); name[suffix-expr] = '\000'; sym = lookup_symbol (name, orig_left_context, VAR_DOMAIN, 0, NULL); - /* if (sym == NULL) - error ("Could not find renamed variable: %s", ada_demangle (name)); - */ - /* FIXME: ada_demangle should be defined in defs.h, implemented in ada-lang.c */ - write_var_from_sym (orig_left_context, block_found, sym); + if (sym == NULL) + error ("Could not find renamed variable: %s", ada_decode (name)); + if (ada_is_object_renaming (sym)) + write_object_renaming (orig_left_context, sym, max_depth-1); + else + write_var_from_sym (orig_left_context, block_found, sym); suffix += 5; slice_state = SIMPLE_INDEX; - while (*suffix == 'X') + while (*suffix == 'X') { suffix += 1; switch (*suffix) { + case 'A': + suffix += 1; + write_exp_elt_opcode (UNOP_IND); + break; case 'L': slice_state = LOWER_BOUND; case 'S': suffix += 1; - if (isdigit (*suffix)) + if (isdigit (*suffix)) { - char* next; + char *next; long val = strtol (suffix, &next, 10); - if (next == suffix) + if (next == suffix) goto BadEncoding; suffix = next; write_exp_elt_opcode (OP_LONG); write_exp_elt_type (builtin_type_ada_int); write_exp_elt_longcst ((LONGEST) val); write_exp_elt_opcode (OP_LONG); - } + } else { - const char* end; - char* index_name; + const char *end; + char *index_name; int index_len; - struct symbol* index_sym; + struct symbol *index_sym; end = strchr (suffix, 'X'); - if (end == NULL) + if (end == NULL) end = suffix + strlen (suffix); - + index_len = simple_tail - qualification + 2 + (suffix - end) + 1; - index_name = (char*) malloc (index_len); + index_name + = (char *) obstack_alloc (&temp_parse_space, index_len); memset (index_name, '\000', index_len); - /* add_name_string_cleanup (index_name);*/ - /* FIXME: add_name_string_cleanup should be defined in - parser-defs.h, implemented in parse.c */ strncpy (index_name, qualification, simple_tail - qualification); index_name[simple_tail - qualification] = '\000'; strncat (index_name, suffix, suffix-end); suffix = end; - index_sym = + index_sym = lookup_symbol (index_name, NULL, VAR_DOMAIN, 0, NULL); if (index_sym == NULL) error ("Could not find %s", index_name); write_var_from_sym (NULL, block_found, sym); } if (slice_state == SIMPLE_INDEX) - { + { write_exp_elt_opcode (OP_FUNCALL); write_exp_elt_longcst ((LONGEST) 1); write_exp_elt_opcode (OP_FUNCALL); @@ -916,25 +828,25 @@ write_object_renaming (orig_left_context, renaming) case 'R': { struct stoken field_name; - const char* end; + const char *end; suffix += 1; - + if (slice_state != SIMPLE_INDEX) goto BadEncoding; end = strchr (suffix, 'X'); - if (end == NULL) + if (end == NULL) end = suffix + strlen (suffix); field_name.length = end - suffix; - field_name.ptr = (char*) malloc (end - suffix + 1); + field_name.ptr = (char *) malloc (end - suffix + 1); strncpy (field_name.ptr, suffix, end - suffix); field_name.ptr[end - suffix] = '\000'; suffix = end; write_exp_elt_opcode (STRUCTOP_STRUCT); write_exp_string (field_name); - write_exp_elt_opcode (STRUCTOP_STRUCT); + write_exp_elt_opcode (STRUCTOP_STRUCT); break; } - + default: goto BadEncoding; } @@ -944,15 +856,15 @@ write_object_renaming (orig_left_context, renaming) BadEncoding: error ("Internal error in encoding of renaming declaration: %s", - DEPRECATED_SYMBOL_NAME (renaming)); + SYMBOL_LINKAGE_NAME (renaming)); } /* Convert the character literal whose ASCII value would be VAL to the appropriate value of type TYPE, if there is a translation. - Otherwise return VAL. Hence, in an enumeration type ('A', 'B'), - the literal 'A' (VAL == 65), returns 0. */ + Otherwise return VAL. Hence, in an enumeration type ('A', 'B'), + the literal 'A' (VAL == 65), returns 0. */ static LONGEST -convert_char_literal (struct type* type, LONGEST val) +convert_char_literal (struct type *type, LONGEST val) { char name[7]; int f; @@ -960,10 +872,16 @@ convert_char_literal (struct type* type, LONGEST val) if (type == NULL || TYPE_CODE (type) != TYPE_CODE_ENUM) return val; sprintf (name, "QU%02x", (int) val); - for (f = 0; f < TYPE_NFIELDS (type); f += 1) + for (f = 0; f < TYPE_NFIELDS (type); f += 1) { - if (DEPRECATED_STREQ (name, TYPE_FIELD_NAME (type, f))) + if (strcmp (name, TYPE_FIELD_NAME (type, f)) == 0) return TYPE_FIELD_BITPOS (type, f); } return val; } + +void +_initialize_ada_exp (void) +{ + obstack_init (&temp_parse_space); +} diff --git a/gdb/ada-lang.c b/gdb/ada-lang.c index b97321b..e9daf1a 100644 --- a/gdb/ada-lang.c +++ b/gdb/ada-lang.c @@ -1,5 +1,5 @@ /* Ada language support routines for GDB, the GNU debugger. Copyright - 1992, 1993, 1994, 1997, 1998, 1999, 2000, 2003, 2004 + 1992, 1993, 1994, 1997, 1998, 1999, 2000, 2003, 2004. Free Software Foundation, Inc. This file is part of GDB. @@ -18,12 +18,14 @@ You should have received a copy of the GNU General Public License along with this program; if not, write to the Free Software Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. */ +#include "defs.h" #include <stdio.h> #include "gdb_string.h" #include <ctype.h> #include <stdarg.h> #include "demangle.h" -#include "defs.h" +#include "gdb_regex.h" +#include "frame.h" #include "symtab.h" #include "gdbtypes.h" #include "gdbcmd.h" @@ -36,15 +38,49 @@ Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. */ #include "objfiles.h" #include "breakpoint.h" #include "gdbcore.h" +#include "hashtab.h" +#include "gdb_obstack.h" #include "ada-lang.h" +#include "completer.h" +#include "gdb_stat.h" +#ifdef UI_OUT #include "ui-out.h" +#endif #include "block.h" #include "infcall.h" #include "dictionary.h" -struct cleanup *unresolved_names; +#ifndef ADA_RETAIN_DOTS +#define ADA_RETAIN_DOTS 0 +#endif + +/* Define whether or not the C operator '/' truncates towards zero for + differently signed operands (truncation direction is undefined in C). + Copied from valarith.c. */ + +#ifndef TRUNCATION_TOWARDS_ZERO +#define TRUNCATION_TOWARDS_ZERO ((-5 / 2) == -2) +#endif -void extract_string (CORE_ADDR addr, char *buf); +/* A structure that contains a vector of strings. + The main purpose of this type is to group the vector and its + associated parameters in one structure. This makes it easier + to handle and pass around. */ + +struct string_vector +{ + char **array; /* The vector itself. */ + int index; /* Index of the next available element in the array. */ + size_t size; /* The number of entries allocated in the array. */ +}; + +static struct string_vector xnew_string_vector (int initial_size); +static void string_vector_append (struct string_vector *sv, char *str); + +static const char *ada_unqualified_name (const char *decoded_name); +static char *add_angle_brackets (const char *str); +static void extract_string (CORE_ADDR addr, char *buf); +static char *function_name_from_pc (CORE_ADDR pc); static struct type *ada_create_fundamental_type (struct objfile *, int); @@ -82,22 +118,27 @@ static int ada_type_match (struct type *, struct type *, int); static int ada_args_match (struct symbol *, struct value **, int); -static struct value *place_on_stack (struct value *, CORE_ADDR *); +static struct value *ensure_lval (struct value *, CORE_ADDR *); static struct value *convert_actual (struct value *, struct type *, - CORE_ADDR *); + CORE_ADDR *); static struct value *make_array_descriptor (struct type *, struct value *, - CORE_ADDR *); + CORE_ADDR *); -static void ada_add_block_symbols (struct block *, const char *, - domain_enum, struct objfile *, int); +static void ada_add_block_symbols (struct obstack *, + struct block *, const char *, + domain_enum, struct objfile *, + struct symtab *, int); -static void fill_in_ada_prototype (struct symbol *); +static int is_nonfunction (struct ada_symbol_info *, int); -static int is_nonfunction (struct symbol **, int); +static void add_defn_to_vec (struct obstack *, struct symbol *, struct block *, + struct symtab *); -static void add_defn_to_vec (struct symbol *, struct block *); +static int num_defns_collected (struct obstack *); + +static struct ada_symbol_info *defns_collected (struct obstack *, int); static struct partial_symbol *ada_lookup_partial_symbol (struct partial_symtab *, const char *, int, @@ -105,15 +146,17 @@ static struct partial_symbol *ada_lookup_partial_symbol (struct partial_symtab static struct symtab *symtab_for_sym (struct symbol *); -static struct value *ada_resolve_subexp (struct expression **, int *, int, - struct type *); +static struct value *resolve_subexp (struct expression **, int *, int, + struct type *); static void replace_operator_with_call (struct expression **, int, int, int, - struct symbol *, struct block *); + struct symbol *, struct block *); static int possible_user_operator_p (enum exp_opcode, struct value **); -static const char *ada_op_name (enum exp_opcode); +static char *ada_op_name (enum exp_opcode); + +static const char *ada_decoded_op_name (enum exp_opcode); static int numeric_type_p (struct type *); @@ -123,11 +166,14 @@ static int scalar_type_p (struct type *); static int discrete_type_p (struct type *); +static struct type *ada_lookup_struct_elt_type (struct type *, char *, + int, int, int *); + static char *extended_canonical_line_spec (struct symtab_and_line, - const char *); + const char *); static struct value *evaluate_subexp (struct type *, struct expression *, - int *, enum noside); + int *, enum noside); static struct value *evaluate_subexp_type (struct expression *, int *); @@ -136,10 +182,12 @@ static struct type *ada_create_fundamental_type (struct objfile *, int); static int is_dynamic_field (struct type *, int); static struct type *to_fixed_variant_branch_type (struct type *, char *, - CORE_ADDR, struct value *); + CORE_ADDR, struct value *); + +static struct type *to_fixed_array_type (struct type *, struct value *, int); static struct type *to_fixed_range_type (char *, struct value *, - struct objfile *); + struct objfile *); static struct type *to_static_fixed_type (struct type *); @@ -152,10 +200,10 @@ static struct type *decode_packed_array_type (struct type *); static struct value *decode_packed_array (struct value *); static struct value *value_subscript_packed (struct value *, int, - struct value **); + struct value **); -static struct value *coerce_unspec_val_to_type (struct value *, long, - struct type *); +static struct value *coerce_unspec_val_to_type (struct value *, + struct type *); static struct value *get_var_value (char *, char *); @@ -167,71 +215,225 @@ static int is_name_suffix (const char *); static int wild_match (const char *, int, const char *); -static struct symtabs_and_lines find_sal_from_funcs_and_line (const char *, - int, - struct symbol - **, int); +static struct symtabs_and_lines +find_sal_from_funcs_and_line (const char *, int, + struct ada_symbol_info *, int); -static int find_line_in_linetable (struct linetable *, int, struct symbol **, +static int find_line_in_linetable (struct linetable *, int, + struct ada_symbol_info *, int, int *); static int find_next_line_in_linetable (struct linetable *, int, int, int); -static struct symtabs_and_lines all_sals_for_line (const char *, int, - char ***); - static void read_all_symtabs (const char *); static int is_plausible_func_for_line (struct symbol *, int); static struct value *ada_coerce_ref (struct value *); +static LONGEST pos_atr (struct value *); + static struct value *value_pos_atr (struct value *); static struct value *value_val_atr (struct type *, struct value *); -static struct symbol *standard_lookup (const char *, domain_enum); +static struct symbol *standard_lookup (const char *, const struct block *, + domain_enum); -extern void markTimeStart (int index); -extern void markTimeStop (int index); - +extern void symtab_symbol_info (char *regexp, domain_enum kind, + int from_tty); + +static struct value *ada_search_struct_field (char *, struct value *, int, + struct type *); + +static struct value *ada_value_primitive_field (struct value *, int, int, + struct type *); + +static int find_struct_field (char *, struct type *, int, + struct type **, int *, int *, int *); + +static struct value *ada_to_fixed_value_create (struct type *, CORE_ADDR, + struct value *); + +static struct value *ada_to_fixed_value (struct value *); + +static void adjust_pc_past_prologue (CORE_ADDR *); + +static int ada_resolve_function (struct ada_symbol_info *, int, + struct value **, int, const char *, + struct type *); + +static struct value *ada_coerce_to_simple_array (struct value *); + +static int ada_is_direct_array_type (struct type *); + +static void error_breakpoint_runtime_sym_not_found (const char *err_desc); +static int is_runtime_sym_defined (const char *name, int allow_tramp); -/* Maximum-sized dynamic type. */ + + +/* Maximum-sized dynamic type. */ static unsigned int varsize_limit; -static const char *ada_completer_word_break_characters = +/* FIXME: brobecker/2003-09-17: No longer a const because it is + returned by a function that does not return a const char *. */ +static char *ada_completer_word_break_characters = +#ifdef VMS + " \t\n!@#%^&*()+=|~`}{[]\";:?/,-"; +#else " \t\n!@#$%^&*()+=|~`}{[]\";:?/,-"; +#endif -/* The name of the symbol to use to get the name of the main subprogram */ -#define ADA_MAIN_PROGRAM_SYMBOL_NAME "__gnat_ada_main_program_name" +/* The name of the symbol to use to get the name of the main subprogram. */ +static const char ADA_MAIN_PROGRAM_SYMBOL_NAME[] + = "__gnat_ada_main_program_name"; - /* Utilities */ +/* The name of the runtime function called when an exception is raised. */ +static const char raise_sym_name[] = "__gnat_raise_nodefer_with_msg"; -/* extract_string - * - * read the string located at ADDR from the inferior and store the - * result into BUF - */ -void +/* The name of the runtime function called when an unhandled exception + is raised. */ +static const char raise_unhandled_sym_name[] = "__gnat_unhandled_exception"; + +/* The name of the runtime function called when an assert failure is + raised. */ +static const char raise_assert_sym_name[] = + "system__assertions__raise_assert_failure"; + +/* When GDB stops on an unhandled exception, GDB will go up the stack until + if finds a frame corresponding to this function, in order to extract the + name of the exception that has been raised from one of the parameters. */ +static const char process_raise_exception_name[] = + "ada__exceptions__process_raise_exception"; + +/* A string that reflects the longest exception expression rewrite, + aside from the exception name. */ +static const char longest_exception_template[] = + "'__gnat_raise_nodefer_with_msg' if long_integer(e) = long_integer(&)"; + +/* Limit on the number of warnings to raise per expression evaluation. */ +static int warning_limit = 2; + +/* Number of warning messages issued; reset to 0 by cleanups after + expression evaluation. */ +static int warnings_issued = 0; + +static const char *known_runtime_file_name_patterns[] = { + ADA_KNOWN_RUNTIME_FILE_NAME_PATTERNS NULL +}; + +static const char *known_auxiliary_function_name_patterns[] = { + ADA_KNOWN_AUXILIARY_FUNCTION_NAME_PATTERNS NULL +}; + +/* Space for allocating results of ada_lookup_symbol_list. */ +static struct obstack symbol_list_obstack; + + /* Utilities */ + +/* Create a new empty string_vector struct with an initial size of + INITIAL_SIZE. */ + +static struct string_vector +xnew_string_vector (int initial_size) +{ + struct string_vector result; + + result.array = (char **) xmalloc ((initial_size + 1) * sizeof (char *)); + result.index = 0; + result.size = initial_size; + + return result; +} + +/* Add STR at the end of the given string vector SV. If SV is already + full, its size is automatically increased (doubled). */ + +static void +string_vector_append (struct string_vector *sv, char *str) +{ + if (sv->index >= sv->size) + GROW_VECT (sv->array, sv->size, sv->size * 2); + + sv->array[sv->index] = str; + sv->index++; +} + +/* Given DECODED_NAME a string holding a symbol name in its + decoded form (ie using the Ada dotted notation), returns + its unqualified name. */ + +static const char * +ada_unqualified_name (const char *decoded_name) +{ + const char *result = strrchr (decoded_name, '.'); + + if (result != NULL) + result++; /* Skip the dot... */ + else + result = decoded_name; + + return result; +} + +/* Return a string starting with '<', followed by STR, and '>'. + The result is good until the next call. */ + +static char * +add_angle_brackets (const char *str) +{ + static char *result = NULL; + + xfree (result); + result = (char *) xmalloc ((strlen (str) + 3) * sizeof (char)); + + sprintf (result, "<%s>", str); + return result; +} + +static char * +ada_get_gdb_completer_word_break_characters (void) +{ + return ada_completer_word_break_characters; +} + +/* Read the string located at ADDR from the inferior and store the + result into BUF. */ + +static void extract_string (CORE_ADDR addr, char *buf) { int char_index = 0; - /* Loop, reading one byte at a time, until we reach the '\000' - end-of-string marker */ + /* Loop, reading one byte at a time, until we reach the '\000' + end-of-string marker. */ do { target_read_memory (addr + char_index * sizeof (char), - buf + char_index * sizeof (char), sizeof (char)); + buf + char_index * sizeof (char), sizeof (char)); char_index++; } while (buf[char_index - 1] != '\000'); } +/* Return the name of the function owning the instruction located at PC. + Return NULL if no such function could be found. */ + +static char * +function_name_from_pc (CORE_ADDR pc) +{ + char *func_name; + + if (!find_pc_partial_function (pc, &func_name, NULL, NULL)) + return NULL; + + return func_name; +} + /* Assuming *OLD_VECT points to an array of *SIZE objects of size ELEMENT_SIZE, grow it to contain at least MIN_SIZE objects, - updating *OLD_VECT and *SIZE as necessary. */ + updating *OLD_VECT and *SIZE as necessary. */ void grow_vect (void **old_vect, size_t * size, size_t min_size, int element_size) @@ -240,27 +442,50 @@ grow_vect (void **old_vect, size_t * size, size_t min_size, int element_size) { *size *= 2; if (*size < min_size) - *size = min_size; + *size = min_size; *old_vect = xrealloc (*old_vect, *size * element_size); } } /* True (non-zero) iff TARGET matches FIELD_NAME up to any trailing - suffix of FIELD_NAME beginning "___" */ + suffix of FIELD_NAME beginning "___". */ static int field_name_match (const char *field_name, const char *target) { int len = strlen (target); return - DEPRECATED_STREQN (field_name, target, len) - && (field_name[len] == '\0' - || (DEPRECATED_STREQN (field_name + len, "___", 3) - && !DEPRECATED_STREQ (field_name + strlen (field_name) - 6, "___XVN"))); + (strncmp (field_name, target, len) == 0 + && (field_name[len] == '\0' + || (strncmp (field_name + len, "___", 3) == 0 + && strcmp (field_name + strlen (field_name) - 6, "___XVN") != 0))); } -/* The length of the prefix of NAME prior to any "___" suffix. */ +/* Assuming TYPE is a TYPE_CODE_STRUCT, find the field whose name matches + FIELD_NAME, and return its index. This function also handles fields + whose name have ___ suffixes because the compiler sometimes alters + their name by adding such a suffix to represent fields with certain + constraints. If the field could not be found, return a negative + number if MAYBE_MISSING is set. Otherwise raise an error. */ + +int +ada_get_field_index (const struct type *type, const char *field_name, + int maybe_missing) +{ + int fieldno; + for (fieldno = 0; fieldno < TYPE_NFIELDS (type); fieldno++) + if (field_name_match (TYPE_FIELD_NAME (type, fieldno), field_name)) + return fieldno; + + if (!maybe_missing) + error ("Unable to find field %s in struct %s. Aborting", + field_name, TYPE_NAME (type)); + + return -1; +} + +/* The length of the prefix of NAME prior to any "___" suffix. */ int ada_name_prefix_len (const char *name) @@ -271,13 +496,15 @@ ada_name_prefix_len (const char *name) { const char *p = strstr (name, "___"); if (p == NULL) - return strlen (name); + return strlen (name); else - return p - name; + return p - name; } } -/* SUFFIX is a suffix of STR. False if STR is null. */ +/* Return non-zero if SUFFIX is a suffix of STR. + Return zero if STR is null. */ + static int is_suffix (const char *str, const char *suffix) { @@ -286,15 +513,16 @@ is_suffix (const char *str, const char *suffix) return 0; len1 = strlen (str); len2 = strlen (suffix); - return (len1 >= len2 && DEPRECATED_STREQ (str + len1 - len2, suffix)); + return (len1 >= len2 && strcmp (str + len1 - len2, suffix) == 0); } /* Create a value of type TYPE whose contents come from VALADDR, if it - * is non-null, and whose memory address (in the inferior) is - * ADDRESS. */ + is non-null, and whose memory address (in the inferior) is + ADDRESS. */ + struct value * value_from_contents_and_address (struct type *type, char *valaddr, - CORE_ADDR address) + CORE_ADDR address) { struct value *v = allocate_value (type); if (valaddr == NULL) @@ -307,31 +535,35 @@ value_from_contents_and_address (struct type *type, char *valaddr, return v; } -/* The contents of value VAL, beginning at offset OFFSET, treated as a - value of type TYPE. The result is an lval in memory if VAL is. */ +/* The contents of value VAL, treated as a value of type TYPE. The + result is an lval in memory if VAL is. */ static struct value * -coerce_unspec_val_to_type (struct value *val, long offset, struct type *type) +coerce_unspec_val_to_type (struct value *val, struct type *type) { CHECK_TYPEDEF (type); - if (VALUE_LVAL (val) == lval_memory) - return value_at_lazy (type, - VALUE_ADDRESS (val) + VALUE_OFFSET (val) + offset, - NULL); + if (VALUE_TYPE (val) == type) + return val; else { - struct value *result = allocate_value (type); - VALUE_LVAL (result) = not_lval; - if (VALUE_ADDRESS (val) == 0) - memcpy (VALUE_CONTENTS_RAW (result), VALUE_CONTENTS (val) + offset, - TYPE_LENGTH (type) > TYPE_LENGTH (VALUE_TYPE (val)) - ? TYPE_LENGTH (VALUE_TYPE (val)) : TYPE_LENGTH (type)); + struct value *result; + + /* Make sure that the object size is not unreasonable before + trying to allocate some memory for it. */ + if (TYPE_LENGTH (type) > varsize_limit) + error ("object size is larger than varsize-limit"); + + result = allocate_value (type); + VALUE_LVAL (result) = VALUE_LVAL (val); + VALUE_BITSIZE (result) = VALUE_BITSIZE (val); + VALUE_BITPOS (result) = VALUE_BITPOS (val); + VALUE_ADDRESS (result) = VALUE_ADDRESS (val) + VALUE_OFFSET (val); + if (VALUE_LAZY (val) || + TYPE_LENGTH (type) > TYPE_LENGTH (VALUE_TYPE (val))) + VALUE_LAZY (result) = 1; else - { - VALUE_ADDRESS (result) = - VALUE_ADDRESS (val) + VALUE_OFFSET (val) + offset; - VALUE_LAZY (result) = 1; - } + memcpy (VALUE_CONTENTS_RAW (result), VALUE_CONTENTS (val), + TYPE_LENGTH (type)); return result; } } @@ -354,59 +586,130 @@ cond_offset_target (CORE_ADDR address, long offset) return address + offset; } -/* Perform execute_command on the result of concatenating all - arguments up to NULL. */ +/* Issue a warning (as for the definition of warning in utils.c, but + with exactly one argument rather than ...), unless the limit on the + number of warnings has passed during the evaluation of the current + expression. */ static void -do_command (const char *arg, ...) +lim_warning (const char *format, long arg) { - int len; - char *cmd; - const char *s; - va_list ap; - - va_start (ap, arg); - len = 0; - s = arg; - cmd = ""; - for (; s != NULL; s = va_arg (ap, const char *)) - { - char *cmd1; - len += strlen (s); - cmd1 = alloca (len + 1); - strcpy (cmd1, cmd); - strcat (cmd1, s); - cmd = cmd1; - } - va_end (ap); - execute_command (cmd, 0); + warnings_issued += 1; + if (warnings_issued <= warning_limit) + warning (format, arg); +} + +static const char * +ada_translate_error_message (const char *string) +{ + if (strcmp (string, "Invalid cast.") == 0) + return "Invalid type conversion."; + else + return string; } - - /* Language Selection */ +static LONGEST +MAX_OF_SIZE (int size) +{ + LONGEST top_bit = (LONGEST) 1 << (size*8-2); + return top_bit | (top_bit-1); +} + +static LONGEST +MIN_OF_SIZE (int size) +{ + return - MAX_OF_SIZE (size) - 1; +} + +static ULONGEST +UMAX_OF_SIZE (int size) +{ + ULONGEST top_bit = (ULONGEST) 1 << (size*8-1); + return top_bit | (top_bit-1); +} + +static ULONGEST +UMIN_OF_SIZE (int size) +{ + return 0; +} + +/* The largest value in the domain of TYPE, a discrete type, as an integer. */ +static struct value * +discrete_type_high_bound (struct type *type) +{ + switch (TYPE_CODE (type)) + { + case TYPE_CODE_RANGE: + return value_from_longest (TYPE_TARGET_TYPE (type), + TYPE_HIGH_BOUND (type)); + case TYPE_CODE_ENUM: + return + value_from_longest (type, + TYPE_FIELD_BITPOS (type, TYPE_NFIELDS (type)-1)); + case TYPE_CODE_INT: + return value_from_longest (type, MAX_OF_TYPE (type)); + default: + error ("Unexpected type in discrete_type_high_bound."); + } +} + +/* The largest value in the domain of TYPE, a discrete type, as an integer. */ +static struct value * +discrete_type_low_bound (struct type *type) +{ + switch (TYPE_CODE (type)) + { + case TYPE_CODE_RANGE: + return value_from_longest (TYPE_TARGET_TYPE (type), + TYPE_LOW_BOUND (type)); + case TYPE_CODE_ENUM: + return value_from_longest (type, TYPE_FIELD_BITPOS (type, 0)); + case TYPE_CODE_INT: + return value_from_longest (type, MIN_OF_TYPE (type)); + default: + error ("Unexpected type in discrete_type_low_bound."); + } +} + +/* The identity on non-range types. For range types, the underlying + non-range scalar type. */ + +static struct type * +base_type (struct type *type) +{ + while (type != NULL && TYPE_CODE (type) == TYPE_CODE_RANGE) + { + if (type == TYPE_TARGET_TYPE (type) + || TYPE_TARGET_TYPE (type) == NULL) + return type; + type = TYPE_TARGET_TYPE (type); + } + return type; +} + + + /* Language Selection */ /* If the main program is in Ada, return language_ada, otherwise return LANG (the main program is in Ada iif the adainit symbol is found). - MAIN_PST is not used. */ + MAIN_PST is not used. */ enum language ada_update_initial_language (enum language lang, - struct partial_symtab *main_pst) + struct partial_symtab *main_pst) { if (lookup_minimal_symbol ("adainit", (const char *) NULL, - (struct objfile *) NULL) != NULL) - /* return language_ada; */ - /* FIXME: language_ada should be defined in defs.h */ - return language_unknown; + (struct objfile *) NULL) != NULL) + return language_ada; return lang; } + /* Symbols */ - /* Symbols */ - -/* Table of Ada operators and their GNAT-mangled names. Last entry is pair - of NULLs. */ +/* Table of Ada operators and their GNAT-encoded names. Last entry is pair + of NULLs. */ const struct ada_opname_map ada_opname_table[] = { {"Oadd", "\"+\"", BINOP_ADD}, @@ -433,11 +736,12 @@ const struct ada_opname_map ada_opname_table[] = { {NULL, NULL} }; -/* True if STR should be suppressed in info listings. */ +/* Return non-zero if STR should be suppressed in info listings. */ + static int is_suppressed_name (const char *str) { - if (DEPRECATED_STREQN (str, "_ada_", 5)) + if (strncmp (str, "_ada_", 5) == 0) str += 5; if (str[0] == '_' || str[0] == '\000') return 1; @@ -446,81 +750,84 @@ is_suppressed_name (const char *str) const char *p; const char *suffix = strstr (str, "___"); if (suffix != NULL && suffix[3] != 'X') - return 1; + return 1; if (suffix == NULL) - suffix = str + strlen (str); + suffix = str + strlen (str); for (p = suffix - 1; p != str; p -= 1) - if (isupper (*p)) - { - int i; - if (p[0] == 'X' && p[-1] != '_') - goto OK; - if (*p != 'O') - return 1; - for (i = 0; ada_opname_table[i].mangled != NULL; i += 1) - if (DEPRECATED_STREQN (ada_opname_table[i].mangled, p, - strlen (ada_opname_table[i].mangled))) - goto OK; - return 1; - OK:; - } + if (isupper (*p)) + { + int i; + if (p[0] == 'X' && p[-1] != '_') + goto OK; + if (*p != 'O') + return 1; + for (i = 0; ada_opname_table[i].encoded != NULL; i += 1) + if (strncmp (ada_opname_table[i].encoded, p, + strlen (ada_opname_table[i].encoded)) == 0) + goto OK; + return 1; + OK:; + } return 0; } } -/* The "mangled" form of DEMANGLED, according to GNAT conventions. - * The result is valid until the next call to ada_mangle. */ +/* The "encoded" form of DECODED, according to GNAT conventions. + The result is valid until the next call to ada_encode. */ + char * -ada_mangle (const char *demangled) +ada_encode (const char *decoded) { - static char *mangling_buffer = NULL; - static size_t mangling_buffer_size = 0; + static char *encoding_buffer = NULL; + static size_t encoding_buffer_size = 0; const char *p; int k; - if (demangled == NULL) + if (decoded == NULL) return NULL; - GROW_VECT (mangling_buffer, mangling_buffer_size, - 2 * strlen (demangled) + 10); + GROW_VECT (encoding_buffer, encoding_buffer_size, + 2 * strlen (decoded) + 10); k = 0; - for (p = demangled; *p != '\0'; p += 1) + for (p = decoded; *p != '\0'; p += 1) { - if (*p == '.') - { - mangling_buffer[k] = mangling_buffer[k + 1] = '_'; - k += 2; - } + if (!ADA_RETAIN_DOTS && *p == '.') + { + encoding_buffer[k] = encoding_buffer[k + 1] = '_'; + k += 2; + } else if (*p == '"') - { - const struct ada_opname_map *mapping; - - for (mapping = ada_opname_table; - mapping->mangled != NULL && - !DEPRECATED_STREQN (mapping->demangled, p, strlen (mapping->demangled)); - p += 1) - ; - if (mapping->mangled == NULL) - error ("invalid Ada operator name: %s", p); - strcpy (mangling_buffer + k, mapping->mangled); - k += strlen (mapping->mangled); - break; - } + { + const struct ada_opname_map *mapping; + + for (mapping = ada_opname_table; + mapping->encoded != NULL && + strncmp (mapping->decoded, p, + strlen (mapping->decoded)) != 0; + mapping += 1) + ; + if (mapping->encoded == NULL) + error ("invalid Ada operator name: %s", p); + strcpy (encoding_buffer + k, mapping->encoded); + k += strlen (mapping->encoded); + break; + } else - { - mangling_buffer[k] = *p; - k += 1; - } + { + encoding_buffer[k] = *p; + k += 1; + } } - mangling_buffer[k] = '\0'; - return mangling_buffer; + encoding_buffer[k] = '\0'; + return encoding_buffer; } /* Return NAME folded to lower case, or, if surrounded by single - * quotes, unfolded, but with the quotes stripped away. Result good - * to next call. */ + quotes, unfolded, but with the quotes stripped away. Result good + to next call. */ + char * ada_fold_name (const char *name) { @@ -539,148 +846,241 @@ ada_fold_name (const char *name) { int i; for (i = 0; i <= len; i += 1) - fold_buffer[i] = tolower (name[i]); + fold_buffer[i] = tolower (name[i]); } return fold_buffer; } -/* Demangle: - 1. Discard final __{DIGIT}+ or ${DIGIT}+ +/* decode: + 0. Discard trailing .{DIGIT}+ or trailing ___{DIGIT}+ + These are suffixes introduced by GNAT5 to nested subprogram + names, and do not serve any purpose for the debugger. + 1. Discard final __{DIGIT}+ or $({DIGIT}+(__{DIGIT}+)*) 2. Convert other instances of embedded "__" to `.'. 3. Discard leading _ada_. 4. Convert operator names to the appropriate quoted symbols. - 5. Remove everything after first ___ if it is followed by + 5. Remove everything after first ___ if it is followed by 'X'. 6. Replace TK__ with __, and a trailing B or TKB with nothing. 7. Put symbols that should be suppressed in <...> brackets. 8. Remove trailing X[bn]* suffix (indicating names in package bodies). - The resulting string is valid until the next call of ada_demangle. - */ -char * -ada_demangle (const char *mangled) + The resulting string is valid until the next call of ada_decode. + If the string is unchanged by demangling, the original string pointer + is returned. */ + +const char * +ada_decode (const char *encoded) { int i, j; int len0; const char *p; - char *demangled; + char *decoded; int at_start_name; - static char *demangling_buffer = NULL; - static size_t demangling_buffer_size = 0; + static char *decoding_buffer = NULL; + static size_t decoding_buffer_size = 0; - if (DEPRECATED_STREQN (mangled, "_ada_", 5)) - mangled += 5; + if (strncmp (encoded, "_ada_", 5) == 0) + encoded += 5; - if (mangled[0] == '_' || mangled[0] == '<') + if (encoded[0] == '_' || encoded[0] == '<') goto Suppress; - p = strstr (mangled, "___"); - if (p == NULL) - len0 = strlen (mangled); - else + /* Remove trailing .{DIGIT}+ or ___{DIGIT}+. */ + len0 = strlen (encoded); + if (len0 > 1 && isdigit (encoded[len0 - 1])) + { + i = len0 - 2; + while (i > 0 && isdigit (encoded[i])) + i--; + if (i >= 0 && encoded[i] == '.') + len0 = i; + else if (i >= 2 && strncmp (encoded + i - 2, "___", 3) == 0) + len0 = i - 2; + } + + /* Remove the ___X.* suffix if present. Do not forget to verify that + the suffix is located before the current "end" of ENCODED. We want + to avoid re-matching parts of ENCODED that have previously been + marked as discarded (by decrementing LEN0). */ + p = strstr (encoded, "___"); + if (p != NULL && p - encoded < len0 - 3) { if (p[3] == 'X') - len0 = p - mangled; + len0 = p - encoded; else - goto Suppress; + goto Suppress; } - if (len0 > 3 && DEPRECATED_STREQ (mangled + len0 - 3, "TKB")) + + if (len0 > 3 && strncmp (encoded + len0 - 3, "TKB", 3) == 0) len0 -= 3; - if (len0 > 1 && DEPRECATED_STREQ (mangled + len0 - 1, "B")) + + if (len0 > 1 && strncmp (encoded + len0 - 1, "B", 1) == 0) len0 -= 1; - /* Make demangled big enough for possible expansion by operator name. */ - GROW_VECT (demangling_buffer, demangling_buffer_size, 2 * len0 + 1); - demangled = demangling_buffer; + /* Make decoded big enough for possible expansion by operator name. */ + GROW_VECT (decoding_buffer, decoding_buffer_size, 2 * len0 + 1); + decoded = decoding_buffer; - if (isdigit (mangled[len0 - 1])) + if (len0 > 1 && isdigit (encoded[len0 - 1])) { - for (i = len0 - 2; i >= 0 && isdigit (mangled[i]); i -= 1) - ; - if (i > 1 && mangled[i] == '_' && mangled[i - 1] == '_') - len0 = i - 1; - else if (mangled[i] == '$') - len0 = i; + i = len0 - 2; + while ((i >= 0 && isdigit (encoded[i])) + || (i >= 1 && encoded[i] == '_' && isdigit (encoded[i - 1]))) + i -= 1; + if (i > 1 && encoded[i] == '_' && encoded[i - 1] == '_') + len0 = i - 1; + else if (encoded[i] == '$') + len0 = i; } - for (i = 0, j = 0; i < len0 && !isalpha (mangled[i]); i += 1, j += 1) - demangled[j] = mangled[i]; + for (i = 0, j = 0; i < len0 && !isalpha (encoded[i]); i += 1, j += 1) + decoded[j] = encoded[i]; at_start_name = 1; while (i < len0) { - if (at_start_name && mangled[i] == 'O') - { - int k; - for (k = 0; ada_opname_table[k].mangled != NULL; k += 1) - { - int op_len = strlen (ada_opname_table[k].mangled); - if (DEPRECATED_STREQN - (ada_opname_table[k].mangled + 1, mangled + i + 1, - op_len - 1) && !isalnum (mangled[i + op_len])) - { - strcpy (demangled + j, ada_opname_table[k].demangled); - at_start_name = 0; - i += op_len; - j += strlen (ada_opname_table[k].demangled); - break; - } - } - if (ada_opname_table[k].mangled != NULL) - continue; - } + if (at_start_name && encoded[i] == 'O') + { + int k; + for (k = 0; ada_opname_table[k].encoded != NULL; k += 1) + { + int op_len = strlen (ada_opname_table[k].encoded); + if (strncmp (ada_opname_table[k].encoded + 1, encoded + i + 1, + op_len - 1) == 0 + && !isalnum (encoded[i + op_len])) + { + strcpy (decoded + j, ada_opname_table[k].decoded); + at_start_name = 0; + i += op_len; + j += strlen (ada_opname_table[k].decoded); + break; + } + } + if (ada_opname_table[k].encoded != NULL) + continue; + } at_start_name = 0; - if (i < len0 - 4 && DEPRECATED_STREQN (mangled + i, "TK__", 4)) - i += 2; - if (mangled[i] == 'X' && i != 0 && isalnum (mangled[i - 1])) - { - do - i += 1; - while (i < len0 && (mangled[i] == 'b' || mangled[i] == 'n')); - if (i < len0) - goto Suppress; - } - else if (i < len0 - 2 && mangled[i] == '_' && mangled[i + 1] == '_') - { - demangled[j] = '.'; - at_start_name = 1; - i += 2; - j += 1; - } + if (i < len0 - 4 && strncmp (encoded + i, "TK__", 4) == 0) + i += 2; + if (encoded[i] == 'X' && i != 0 && isalnum (encoded[i - 1])) + { + do + i += 1; + while (i < len0 && (encoded[i] == 'b' || encoded[i] == 'n')); + if (i < len0) + goto Suppress; + } + else if (!ADA_RETAIN_DOTS + && i < len0 - 2 && encoded[i] == '_' && encoded[i + 1] == '_') + { + decoded[j] = '.'; + at_start_name = 1; + i += 2; + j += 1; + } else - { - demangled[j] = mangled[i]; - i += 1; - j += 1; - } + { + decoded[j] = encoded[i]; + i += 1; + j += 1; + } } - demangled[j] = '\000'; + decoded[j] = '\000'; - for (i = 0; demangled[i] != '\0'; i += 1) - if (isupper (demangled[i]) || demangled[i] == ' ') + for (i = 0; decoded[i] != '\0'; i += 1) + if (isupper (decoded[i]) || decoded[i] == ' ') goto Suppress; - return demangled; + if (strcmp (decoded, encoded) == 0) + return encoded; + else + return decoded; Suppress: - GROW_VECT (demangling_buffer, demangling_buffer_size, strlen (mangled) + 3); - demangled = demangling_buffer; - if (mangled[0] == '<') - strcpy (demangled, mangled); + GROW_VECT (decoding_buffer, decoding_buffer_size, strlen (encoded) + 3); + decoded = decoding_buffer; + if (encoded[0] == '<') + strcpy (decoded, encoded); else - sprintf (demangled, "<%s>", mangled); - return demangled; + sprintf (decoded, "<%s>", encoded); + return decoded; } +/* Table for keeping permanent unique copies of decoded names. Once + allocated, names in this table are never released. While this is a + storage leak, it should not be significant unless there are massive + changes in the set of decoded names in successive versions of a + symbol table loaded during a single session. */ +static struct htab *decoded_names_store; + +/* Returns the decoded name of GSYMBOL, as for ada_decode, caching it + in the language-specific part of GSYMBOL, if it has not been + previously computed. Tries to save the decoded name in the same + obstack as GSYMBOL, if possible, and otherwise on the heap (so that, + in any case, the decoded symbol has a lifetime at least that of + GSYMBOL). + The GSYMBOL parameter is "mutable" in the C++ sense: logically + const, but nevertheless modified to a semantically equivalent form + when a decoded name is cached in it. +*/ + +char *ada_decode_symbol (const struct general_symbol_info *gsymbol) +{ + char **resultp = + (char **) &gsymbol->language_specific.cplus_specific.demangled_name; + if (*resultp == NULL) + { + const char *decoded = ada_decode (gsymbol->name); + if (gsymbol->bfd_section != NULL) + { + bfd *obfd = gsymbol->bfd_section->owner; + if (obfd != NULL) + { + struct objfile *objf; + ALL_OBJFILES (objf) + { + if (obfd == objf->obfd) + { + *resultp = obsavestring (decoded, strlen (decoded), + &objf->objfile_obstack); + break; + } + } + } + } + /* Sometimes, we can't find a corresponding objfile, in which + case, we put the result on the heap. Since we only decode + when needed, we hope this usually does not cause a + significant memory leak (FIXME). */ + if (*resultp == NULL) + { + char **slot = + (char **) htab_find_slot (decoded_names_store, + decoded, INSERT); + if (*slot == NULL) + *slot = xstrdup (decoded); + *resultp = *slot; + } + } + + return *resultp; +} + +char *ada_la_decode (const char *encoded, int options) +{ + return xstrdup (ada_decode (encoded)); +} + /* Returns non-zero iff SYM_NAME matches NAME, ignoring any trailing - * suffixes that encode debugging information or leading _ada_ on - * SYM_NAME (see is_name_suffix commentary for the debugging - * information that is ignored). If WILD, then NAME need only match a - * suffix of SYM_NAME minus the same suffixes. Also returns 0 if - * either argument is NULL. */ + suffixes that encode debugging information or leading _ada_ on + SYM_NAME (see is_name_suffix commentary for the debugging + information that is ignored). If WILD, then NAME need only match a + suffix of SYM_NAME minus the same suffixes. Also returns 0 if + either argument is NULL. */ int ada_match_name (const char *sym_name, const char *name, int wild) @@ -692,16 +1092,16 @@ ada_match_name (const char *sym_name, const char *name, int wild) else { int len_name = strlen (name); - return (DEPRECATED_STREQN (sym_name, name, len_name) - && is_name_suffix (sym_name + len_name)) - || (DEPRECATED_STREQN (sym_name, "_ada_", 5) - && DEPRECATED_STREQN (sym_name + 5, name, len_name) - && is_name_suffix (sym_name + len_name + 5)); + return (strncmp (sym_name, name, len_name) == 0 + && is_name_suffix (sym_name + len_name)) + || (strncmp (sym_name, "_ada_", 5) == 0 + && strncmp (sym_name + 5, name, len_name) == 0 + && is_name_suffix (sym_name + len_name + 5)); } } -/* True (non-zero) iff in Ada mode, the symbol SYM should be - suppressed in info listings. */ +/* True (non-zero) iff, in Ada mode, the symbol SYM should be + suppressed in info listings. */ int ada_suppress_symbol_printing (struct symbol *sym) @@ -709,14 +1109,13 @@ ada_suppress_symbol_printing (struct symbol *sym) if (SYMBOL_DOMAIN (sym) == STRUCT_DOMAIN) return 1; else - return is_suppressed_name (DEPRECATED_SYMBOL_NAME (sym)); + return is_suppressed_name (SYMBOL_LINKAGE_NAME (sym)); } - /* Arrays */ + /* Arrays */ -/* Names of MAX_ADA_DIMENS bounds in P_BOUNDS fields of - array descriptors. */ +/* Names of MAX_ADA_DIMENS bounds in P_BOUNDS fields of array descriptors. */ static char *bound_name[] = { "LB0", "UB0", "LB1", "UB1", "LB2", "UB2", "LB3", "UB3", @@ -725,36 +1124,39 @@ static char *bound_name[] = { /* Maximum number of array dimensions we are prepared to handle. */ -#define MAX_ADA_DIMENS (sizeof(bound_name) / (2*sizeof(char*))) +#define MAX_ADA_DIMENS (sizeof(bound_name) / (2*sizeof(char *))) -/* Like modify_field, but allows bitpos > wordlength. */ +/* Like modify_field, but allows bitpos > wordlength. */ static void modify_general_field (char *addr, LONGEST fieldval, int bitpos, int bitsize) { - modify_field (addr + sizeof (LONGEST) * bitpos / (8 * sizeof (LONGEST)), - fieldval, bitpos % (8 * sizeof (LONGEST)), bitsize); + modify_field (addr + bitpos / 8, fieldval, bitpos % 8, bitsize); } -/* The desc_* routines return primitive portions of array descriptors - (fat pointers). */ +/* The desc_* routines return primitive portions of array descriptors + (fat pointers). */ /* The descriptor or array type, if any, indicated by TYPE; removes - level of indirection, if needed. */ + level of indirection, if needed. */ + static struct type * desc_base_type (struct type *type) { if (type == NULL) return NULL; CHECK_TYPEDEF (type); - if (type != NULL && TYPE_CODE (type) == TYPE_CODE_PTR) + if (type != NULL && + (TYPE_CODE (type) == TYPE_CODE_PTR + || TYPE_CODE (type) == TYPE_CODE_REF)) return check_typedef (TYPE_TARGET_TYPE (type)); else return type; } -/* True iff TYPE indicates a "thin" array pointer type. */ +/* True iff TYPE indicates a "thin" array pointer type. */ + static int is_thin_pntr (struct type *type) { @@ -763,7 +1165,8 @@ is_thin_pntr (struct type *type) || is_suffix (ada_type_name (desc_base_type (type)), "___XUT___XVE"); } -/* The descriptor type for thin pointer type TYPE. */ +/* The descriptor type for thin pointer type TYPE. */ + static struct type * thin_descriptor_type (struct type *type) { @@ -776,36 +1179,39 @@ thin_descriptor_type (struct type *type) { struct type *alt_type = ada_find_parallel_type (base_type, "___XVE"); if (alt_type == NULL) - return base_type; + return base_type; else - return alt_type; + return alt_type; } } -/* A pointer to the array data for thin-pointer value VAL. */ +/* A pointer to the array data for thin-pointer value VAL. */ + static struct value * thin_data_pntr (struct value *val) { struct type *type = VALUE_TYPE (val); if (TYPE_CODE (type) == TYPE_CODE_PTR) return value_cast (desc_data_type (thin_descriptor_type (type)), - value_copy (val)); + value_copy (val)); else return value_from_longest (desc_data_type (thin_descriptor_type (type)), - VALUE_ADDRESS (val) + VALUE_OFFSET (val)); + VALUE_ADDRESS (val) + VALUE_OFFSET (val)); } -/* True iff TYPE indicates a "thick" array pointer type. */ +/* True iff TYPE indicates a "thick" array pointer type. */ + static int is_thick_pntr (struct type *type) { type = desc_base_type (type); return (type != NULL && TYPE_CODE (type) == TYPE_CODE_STRUCT - && lookup_struct_elt_type (type, "P_BOUNDS", 1) != NULL); + && lookup_struct_elt_type (type, "P_BOUNDS", 1) != NULL); } -/* If TYPE is the type of an array descriptor (fat or thin pointer) or a - pointer to one, the type of its bounds data; otherwise, NULL. */ +/* If TYPE is the type of an array descriptor (fat or thin pointer) or a + pointer to one, the type of its bounds data; otherwise, NULL. */ + static struct type * desc_bounds_type (struct type *type) { @@ -819,22 +1225,23 @@ desc_bounds_type (struct type *type) { type = thin_descriptor_type (type); if (type == NULL) - return NULL; + return NULL; r = lookup_struct_elt_type (type, "BOUNDS", 1); if (r != NULL) - return check_typedef (r); + return check_typedef (r); } else if (TYPE_CODE (type) == TYPE_CODE_STRUCT) { r = lookup_struct_elt_type (type, "P_BOUNDS", 1); if (r != NULL) - return check_typedef (TYPE_TARGET_TYPE (check_typedef (r))); + return check_typedef (TYPE_TARGET_TYPE (check_typedef (r))); } return NULL; } /* If ARR is an array descriptor (fat or thin pointer), or pointer to - one, a pointer to its bounds data. Otherwise NULL. */ + one, a pointer to its bounds data. Otherwise NULL. */ + static struct value * desc_bounds (struct value *arr) { @@ -842,34 +1249,35 @@ desc_bounds (struct value *arr) if (is_thin_pntr (type)) { struct type *bounds_type = - desc_bounds_type (thin_descriptor_type (type)); + desc_bounds_type (thin_descriptor_type (type)); LONGEST addr; if (desc_bounds_type == NULL) - error ("Bad GNAT array descriptor"); + error ("Bad GNAT array descriptor"); /* NOTE: The following calculation is not really kosher, but since desc_type is an XVE-encoded type (and shouldn't be), - the correct calculation is a real pain. FIXME (and fix GCC). */ + the correct calculation is a real pain. FIXME (and fix GCC). */ if (TYPE_CODE (type) == TYPE_CODE_PTR) - addr = value_as_long (arr); + addr = value_as_long (arr); else - addr = VALUE_ADDRESS (arr) + VALUE_OFFSET (arr); + addr = VALUE_ADDRESS (arr) + VALUE_OFFSET (arr); return - value_from_longest (lookup_pointer_type (bounds_type), - addr - TYPE_LENGTH (bounds_type)); + value_from_longest (lookup_pointer_type (bounds_type), + addr - TYPE_LENGTH (bounds_type)); } else if (is_thick_pntr (type)) return value_struct_elt (&arr, NULL, "P_BOUNDS", NULL, - "Bad GNAT array descriptor"); + "Bad GNAT array descriptor"); else return NULL; } -/* If TYPE is the type of an array-descriptor (fat pointer), the bit - position of the field containing the address of the bounds data. */ +/* If TYPE is the type of an array-descriptor (fat pointer), the bit + position of the field containing the address of the bounds data. */ + static int fat_pntr_bounds_bitpos (struct type *type) { @@ -877,7 +1285,8 @@ fat_pntr_bounds_bitpos (struct type *type) } /* If TYPE is the type of an array-descriptor (fat pointer), the bit - size of the field containing the address of the bounds data. */ + size of the field containing the address of the bounds data. */ + static int fat_pntr_bounds_bitsize (struct type *type) { @@ -889,16 +1298,17 @@ fat_pntr_bounds_bitsize (struct type *type) return 8 * TYPE_LENGTH (check_typedef (TYPE_FIELD_TYPE (type, 1))); } -/* If TYPE is the type of an array descriptor (fat or thin pointer) or a +/* If TYPE is the type of an array descriptor (fat or thin pointer) or a pointer to one, the type of its array data (a - pointer-to-array-with-no-bounds type); otherwise, NULL. Use - ada_type_of_array to get an array type with bounds data. */ + pointer-to-array-with-no-bounds type); otherwise, NULL. Use + ada_type_of_array to get an array type with bounds data. */ + static struct type * desc_data_type (struct type *type) { type = desc_base_type (type); - /* NOTE: The following is bogus; see comment in desc_bounds. */ + /* NOTE: The following is bogus; see comment in desc_bounds. */ if (is_thin_pntr (type)) return lookup_pointer_type (desc_base_type (TYPE_FIELD_TYPE (thin_descriptor_type (type), 1))); @@ -910,6 +1320,7 @@ desc_data_type (struct type *type) /* If ARR is an array descriptor (fat or thin pointer), a pointer to its array data. */ + static struct value * desc_data (struct value *arr) { @@ -918,14 +1329,15 @@ desc_data (struct value *arr) return thin_data_pntr (arr); else if (is_thick_pntr (type)) return value_struct_elt (&arr, NULL, "P_ARRAY", NULL, - "Bad GNAT array descriptor"); + "Bad GNAT array descriptor"); else return NULL; } /* If TYPE is the type of an array-descriptor (fat pointer), the bit - position of the field containing the address of the data. */ + position of the field containing the address of the data. */ + static int fat_pntr_data_bitpos (struct type *type) { @@ -933,7 +1345,8 @@ fat_pntr_data_bitpos (struct type *type) } /* If TYPE is the type of an array-descriptor (fat pointer), the bit - size of the field containing the address of the data. */ + size of the field containing the address of the data. */ + static int fat_pntr_data_bitsize (struct type *type) { @@ -945,19 +1358,21 @@ fat_pntr_data_bitsize (struct type *type) return TARGET_CHAR_BIT * TYPE_LENGTH (TYPE_FIELD_TYPE (type, 0)); } -/* If BOUNDS is an array-bounds structure (or pointer to one), return +/* If BOUNDS is an array-bounds structure (or pointer to one), return the Ith lower bound stored in it, if WHICH is 0, and the Ith upper - bound, if WHICH is 1. The first bound is I=1. */ + bound, if WHICH is 1. The first bound is I=1. */ + static struct value * desc_one_bound (struct value *bounds, int i, int which) { return value_struct_elt (&bounds, NULL, bound_name[2 * i + which - 2], NULL, - "Bad GNAT array descriptor bounds"); + "Bad GNAT array descriptor bounds"); } /* If BOUNDS is an array-bounds structure type, return the bit position of the Ith lower bound stored in it, if WHICH is 0, and the Ith upper - bound, if WHICH is 1. The first bound is I=1. */ + bound, if WHICH is 1. The first bound is I=1. */ + static int desc_bound_bitpos (struct type *type, int i, int which) { @@ -966,8 +1381,9 @@ desc_bound_bitpos (struct type *type, int i, int which) /* If BOUNDS is an array-bounds structure type, return the bit field size of the Ith lower bound stored in it, if WHICH is 0, and the Ith upper - bound, if WHICH is 1. The first bound is I=1. */ -static int + bound, if WHICH is 1. The first bound is I=1. */ + + static int desc_bound_bitsize (struct type *type, int i, int which) { type = desc_base_type (type); @@ -979,7 +1395,8 @@ desc_bound_bitsize (struct type *type, int i, int which) } /* If TYPE is the type of an array-bounds structure, the type of its - Ith bound (numbering from 1). Otherwise, NULL. */ + Ith bound (numbering from 1). Otherwise, NULL. */ + static struct type * desc_index_type (struct type *type, int i) { @@ -991,8 +1408,9 @@ desc_index_type (struct type *type, int i) return NULL; } -/* The number of index positions in the array-bounds type TYPE. 0 - if TYPE is NULL. */ +/* The number of index positions in the array-bounds type TYPE. + Return 0 if TYPE is NULL. */ + static int desc_arity (struct type *type) { @@ -1003,22 +1421,37 @@ desc_arity (struct type *type) return 0; } +/* Non-zero iff TYPE is a simple array type (not a pointer to one) or + an array descriptor type (representing an unconstrained array + type). */ + +static int +ada_is_direct_array_type (struct type *type) +{ + if (type == NULL) + return 0; + CHECK_TYPEDEF (type); + return (TYPE_CODE (type) == TYPE_CODE_ARRAY + || ada_is_array_descriptor_type (type)); +} + +/* Non-zero iff TYPE is a simple array type or pointer to one. */ -/* Non-zero iff type is a simple array type (or pointer to one). */ int -ada_is_simple_array (struct type *type) +ada_is_simple_array_type (struct type *type) { if (type == NULL) return 0; CHECK_TYPEDEF (type); return (TYPE_CODE (type) == TYPE_CODE_ARRAY - || (TYPE_CODE (type) == TYPE_CODE_PTR - && TYPE_CODE (TYPE_TARGET_TYPE (type)) == TYPE_CODE_ARRAY)); + || (TYPE_CODE (type) == TYPE_CODE_PTR + && TYPE_CODE (TYPE_TARGET_TYPE (type)) == TYPE_CODE_ARRAY)); } -/* Non-zero iff type belongs to a GNAT array descriptor. */ +/* Non-zero iff TYPE belongs to a GNAT array descriptor. */ + int -ada_is_array_descriptor (struct type *type) +ada_is_array_descriptor_type (struct type *type) { struct type *data_type = desc_data_type (type); @@ -1028,17 +1461,18 @@ ada_is_array_descriptor (struct type *type) return data_type != NULL && ((TYPE_CODE (data_type) == TYPE_CODE_PTR - && TYPE_TARGET_TYPE (data_type) != NULL - && TYPE_CODE (TYPE_TARGET_TYPE (data_type)) == TYPE_CODE_ARRAY) - || - TYPE_CODE (data_type) == TYPE_CODE_ARRAY) + && TYPE_TARGET_TYPE (data_type) != NULL + && TYPE_CODE (TYPE_TARGET_TYPE (data_type)) == TYPE_CODE_ARRAY) + || + TYPE_CODE (data_type) == TYPE_CODE_ARRAY) && desc_arity (desc_bounds_type (type)) > 0; } /* Non-zero iff type is a partially mal-formed GNAT array - descriptor. (FIXME: This is to compensate for some problems with + descriptor. FIXME: This is to compensate for some problems with debugging output from GNAT. Re-examine periodically to see if it - is still needed. */ + is still needed. */ + int ada_is_bogus_array_descriptor (struct type *type) { @@ -1046,17 +1480,17 @@ ada_is_bogus_array_descriptor (struct type *type) type != NULL && TYPE_CODE (type) == TYPE_CODE_STRUCT && (lookup_struct_elt_type (type, "P_BOUNDS", 1) != NULL - || lookup_struct_elt_type (type, "P_ARRAY", 1) != NULL) - && !ada_is_array_descriptor (type); + || lookup_struct_elt_type (type, "P_ARRAY", 1) != NULL) + && !ada_is_array_descriptor_type (type); } -/* If ARR has a record type in the form of a standard GNAT array descriptor, +/* If ARR has a record type in the form of a standard GNAT array descriptor, (fat pointer) returns the type of the array data described---specifically, - a pointer-to-array type. If BOUNDS is non-zero, the bounds data are filled + a pointer-to-array type. If BOUNDS is non-zero, the bounds data are filled in from the descriptor; otherwise, they are left unspecified. If - the ARR denotes a null array descriptor and BOUNDS is non-zero, - returns NULL. The result is simply the type of ARR if ARR is not + the ARR denotes a null array descriptor and BOUNDS is non-zero, + returns NULL. The result is simply the type of ARR if ARR is not a descriptor. */ struct type * ada_type_of_array (struct value *arr, int bounds) @@ -1064,7 +1498,7 @@ ada_type_of_array (struct value *arr, int bounds) if (ada_is_packed_array_type (VALUE_TYPE (arr))) return decode_packed_array_type (VALUE_TYPE (arr)); - if (!ada_is_array_descriptor (VALUE_TYPE (arr))) + if (!ada_is_array_descriptor_type (VALUE_TYPE (arr))) return VALUE_TYPE (arr); if (!bounds) @@ -1081,41 +1515,42 @@ ada_type_of_array (struct value *arr, int bounds) arity = ada_array_arity (VALUE_TYPE (arr)); if (elt_type == NULL || arity == 0) - return check_typedef (VALUE_TYPE (arr)); + return check_typedef (VALUE_TYPE (arr)); descriptor = desc_bounds (arr); if (value_as_long (descriptor) == 0) - return NULL; + return NULL; while (arity > 0) - { - struct type *range_type = alloc_type (objf); - struct type *array_type = alloc_type (objf); - struct value *low = desc_one_bound (descriptor, arity, 0); - struct value *high = desc_one_bound (descriptor, arity, 1); - arity -= 1; - - create_range_type (range_type, VALUE_TYPE (low), - (int) value_as_long (low), - (int) value_as_long (high)); - elt_type = create_array_type (array_type, elt_type, range_type); - } + { + struct type *range_type = alloc_type (objf); + struct type *array_type = alloc_type (objf); + struct value *low = desc_one_bound (descriptor, arity, 0); + struct value *high = desc_one_bound (descriptor, arity, 1); + arity -= 1; + + create_range_type (range_type, VALUE_TYPE (low), + (int) value_as_long (low), + (int) value_as_long (high)); + elt_type = create_array_type (array_type, elt_type, range_type); + } return lookup_pointer_type (elt_type); } } /* If ARR does not represent an array, returns ARR unchanged. - Otherwise, returns either a standard GDB array with bounds set - appropriately or, if ARR is a non-null fat pointer, a pointer to a standard - GDB array. Returns NULL if ARR is a null fat pointer. */ + Otherwise, returns either a standard GDB array with bounds set + appropriately or, if ARR is a non-null fat pointer, a pointer to a standard + GDB array. Returns NULL if ARR is a null fat pointer. */ + struct value * ada_coerce_to_simple_array_ptr (struct value *arr) { - if (ada_is_array_descriptor (VALUE_TYPE (arr))) + if (ada_is_array_descriptor_type (VALUE_TYPE (arr))) { struct type *arrType = ada_type_of_array (arr, 1); if (arrType == NULL) - return NULL; + return NULL; return value_cast (arrType, value_copy (desc_data (arr))); } else if (ada_is_packed_array_type (VALUE_TYPE (arr))) @@ -1126,15 +1561,16 @@ ada_coerce_to_simple_array_ptr (struct value *arr) /* If ARR does not represent an array, returns ARR unchanged. Otherwise, returns a standard GDB array describing ARR (which may - be ARR itself if it already is in the proper form). */ -struct value * + be ARR itself if it already is in the proper form). */ + +static struct value * ada_coerce_to_simple_array (struct value *arr) { - if (ada_is_array_descriptor (VALUE_TYPE (arr))) + if (ada_is_array_descriptor_type (VALUE_TYPE (arr))) { struct value *arrVal = ada_coerce_to_simple_array_ptr (arr); if (arrVal == NULL) - error ("Bounds unavailable for null array pointer."); + error ("Bounds unavailable for null array pointer."); return value_ind (arrVal); } else if (ada_is_packed_array_type (VALUE_TYPE (arr))) @@ -1145,7 +1581,8 @@ ada_coerce_to_simple_array (struct value *arr) /* If TYPE represents a GNAT array type, return it translated to an ordinary GDB array type (possibly with BITSIZE fields indicating - packing). For other types, is the identity. */ + packing). For other types, is the identity. */ + struct type * ada_coerce_to_simple_array_type (struct type *type) { @@ -1154,16 +1591,18 @@ ada_coerce_to_simple_array_type (struct type *type) struct type *result; VALUE_TYPE (dummy) = type; result = ada_type_of_array (dummy, 0); - value_free_to_mark (dummy); + value_free_to_mark (mark); return result; } -/* Non-zero iff TYPE represents a standard GNAT packed-array type. */ +/* Non-zero iff TYPE represents a standard GNAT packed-array type. */ + int ada_is_packed_array_type (struct type *type) { if (type == NULL) return 0; + type = desc_base_type (type); CHECK_TYPEDEF (type); return ada_type_name (type) != NULL @@ -1176,8 +1615,9 @@ ada_is_packed_array_type (struct type *type) elements' elements, etc.) is *ELT_BITS, return an identical type, but with the bit sizes of its elements (and those of any constituent arrays) recorded in the BITSIZE components of its - TYPE_FIELD_BITSIZE values, and with *ELT_BITS set to its total size - in bits. */ + TYPE_FIELD_BITSIZE values, and with *ELT_BITS set to its total size + in bits. */ + static struct type * packed_array_type (struct type *type, long *elt_bits) { @@ -1191,13 +1631,13 @@ packed_array_type (struct type *type, long *elt_bits) new_type = alloc_type (TYPE_OBJFILE (type)); new_elt_type = packed_array_type (check_typedef (TYPE_TARGET_TYPE (type)), - elt_bits); + elt_bits); create_array_type (new_type, new_elt_type, TYPE_FIELD_TYPE (type, 0)); TYPE_FIELD_BITSIZE (new_type, 0) = *elt_bits; TYPE_NAME (new_type) = ada_type_name (type); if (get_discrete_bounds (TYPE_FIELD_TYPE (type, 0), - &low_bound, &high_bound) < 0) + &low_bound, &high_bound) < 0) low_bound = high_bound = 0; if (high_bound < low_bound) *elt_bits = TYPE_LENGTH (new_type) = 0; @@ -1205,20 +1645,19 @@ packed_array_type (struct type *type, long *elt_bits) { *elt_bits *= (high_bound - low_bound + 1); TYPE_LENGTH (new_type) = - (*elt_bits + HOST_CHAR_BIT - 1) / HOST_CHAR_BIT; + (*elt_bits + HOST_CHAR_BIT - 1) / HOST_CHAR_BIT; } - /* TYPE_FLAGS (new_type) |= TYPE_FLAG_FIXED_INSTANCE; */ - /* FIXME: TYPE_FLAG_FIXED_INSTANCE should be defined in gdbtypes.h */ + TYPE_FLAGS (new_type) |= TYPE_FLAG_FIXED_INSTANCE; return new_type; } -/* The array type encoded by TYPE, where ada_is_packed_array_type (TYPE). - */ +/* The array type encoded by TYPE, where ada_is_packed_array_type (TYPE). */ + static struct type * decode_packed_array_type (struct type *type) { - struct symbol **syms; + struct symbol *sym; struct block **blocks; const char *raw_name = ada_type_name (check_typedef (type)); char *name = (char *) alloca (strlen (raw_name) + 1); @@ -1227,62 +1666,63 @@ decode_packed_array_type (struct type *type) long bits; int i, n; + type = desc_base_type (type); + memcpy (name, raw_name, tail - raw_name); name[tail - raw_name] = '\000'; - /* NOTE: Use ada_lookup_symbol_list because of bug in some versions - * of gcc (Solaris, e.g.). FIXME when compiler is fixed. */ - n = ada_lookup_symbol_list (name, get_selected_block (NULL), - VAR_DOMAIN, &syms, &blocks); - for (i = 0; i < n; i += 1) - if (syms[i] != NULL && SYMBOL_CLASS (syms[i]) == LOC_TYPEDEF - && DEPRECATED_STREQ (name, ada_type_name (SYMBOL_TYPE (syms[i])))) - break; - if (i >= n) + sym = standard_lookup (name, get_selected_block (0), VAR_DOMAIN); + if (sym == NULL || SYMBOL_TYPE (sym) == NULL) { - warning ("could not find bounds information on packed array"); + lim_warning ("could not find bounds information on packed array", 0); return NULL; } - shadow_type = SYMBOL_TYPE (syms[i]); + shadow_type = SYMBOL_TYPE (sym); if (TYPE_CODE (shadow_type) != TYPE_CODE_ARRAY) { - warning ("could not understand bounds information on packed array"); + lim_warning ("could not understand bounds information on packed array", + 0); return NULL; } if (sscanf (tail + sizeof ("___XP") - 1, "%ld", &bits) != 1) { - warning ("could not understand bit size information on packed array"); + lim_warning + ("could not understand bit size information on packed array", 0); return NULL; } return packed_array_type (shadow_type, &bits); } -/* Given that ARR is a struct value* indicating a GNAT packed array, +/* Given that ARR is a struct value *indicating a GNAT packed array, returns a simple array that denotes that array. Its type is a standard GDB array type except that the BITSIZEs of the array target types are set to the number of bits in each element, and the - type length is set appropriately. */ + type length is set appropriately. */ static struct value * decode_packed_array (struct value *arr) { - struct type *type = decode_packed_array_type (VALUE_TYPE (arr)); + struct type *type; + arr = ada_coerce_ref (arr); + if (TYPE_CODE (VALUE_TYPE (arr)) == TYPE_CODE_PTR) + arr = ada_value_ind (arr); + + type = decode_packed_array_type (VALUE_TYPE (arr)); if (type == NULL) { error ("can't unpack array"); return NULL; } - else - return coerce_unspec_val_to_type (arr, 0, type); + return coerce_unspec_val_to_type (arr, type); } /* The value of the element of packed array ARR at the ARITY indices - given in IND. ARR must be a simple array. */ + given in IND. ARR must be a simple array. */ static struct value * value_subscript_packed (struct value *arr, int arity, struct value **ind) @@ -1299,34 +1739,34 @@ value_subscript_packed (struct value *arr, int arity, struct value **ind) for (i = 0; i < arity; i += 1) { if (TYPE_CODE (elt_type) != TYPE_CODE_ARRAY - || TYPE_FIELD_BITSIZE (elt_type, 0) == 0) - error - ("attempt to do packed indexing of something other than a packed array"); + || TYPE_FIELD_BITSIZE (elt_type, 0) == 0) + error + ("attempt to do packed indexing of something other than a packed array"); else - { - struct type *range_type = TYPE_INDEX_TYPE (elt_type); - LONGEST lowerbound, upperbound; - LONGEST idx; - - if (get_discrete_bounds (range_type, &lowerbound, &upperbound) < 0) - { - warning ("don't know bounds of array"); - lowerbound = upperbound = 0; - } - - idx = value_as_long (value_pos_atr (ind[i])); - if (idx < lowerbound || idx > upperbound) - warning ("packed array index %ld out of bounds", (long) idx); - bits = TYPE_FIELD_BITSIZE (elt_type, 0); - elt_total_bit_offset += (idx - lowerbound) * bits; - elt_type = check_typedef (TYPE_TARGET_TYPE (elt_type)); - } + { + struct type *range_type = TYPE_INDEX_TYPE (elt_type); + LONGEST lowerbound, upperbound; + LONGEST idx; + + if (get_discrete_bounds (range_type, &lowerbound, &upperbound) < 0) + { + lim_warning ("don't know bounds of array", 0); + lowerbound = upperbound = 0; + } + + idx = value_as_long (value_pos_atr (ind[i])); + if (idx < lowerbound || idx > upperbound) + lim_warning ("packed array index %ld out of bounds", (long) idx); + bits = TYPE_FIELD_BITSIZE (elt_type, 0); + elt_total_bit_offset += (idx - lowerbound) * bits; + elt_type = check_typedef (TYPE_TARGET_TYPE (elt_type)); + } } elt_off = elt_total_bit_offset / HOST_CHAR_BIT; bit_off = elt_total_bit_offset % HOST_CHAR_BIT; v = ada_value_primitive_packed_val (arr, NULL, elt_off, bit_off, - bits, elt_type); + bits, elt_type); if (VALUE_LVAL (arr) == lval_internalvar) VALUE_LVAL (v) = lval_internalvar_component; else @@ -1334,7 +1774,7 @@ value_subscript_packed (struct value *arr, int arity, struct value **ind) return v; } -/* Non-zero iff TYPE includes negative integer values. */ +/* Non-zero iff TYPE includes negative integer values. */ static int has_negatives (struct type *type) @@ -1354,32 +1794,32 @@ has_negatives (struct type *type) /* Create a new value of type TYPE from the contents of OBJ starting at byte OFFSET, and bit offset BIT_OFFSET within that byte, proceeding for BIT_SIZE bits. If OBJ is an lval in memory, then - assigning through the result will set the field fetched from. OBJ - may also be NULL, in which case, VALADDR+OFFSET must address the - start of storage containing the packed value. The value returned - in this case is never an lval. - Assumes 0 <= BIT_OFFSET < HOST_CHAR_BIT. */ + assigning through the result will set the field fetched from. + VALADDR is ignored unless OBJ is NULL, in which case, + VALADDR+OFFSET must address the start of storage containing the + packed value. The value returned in this case is never an lval. + Assumes 0 <= BIT_OFFSET < HOST_CHAR_BIT. */ struct value * ada_value_primitive_packed_val (struct value *obj, char *valaddr, long offset, - int bit_offset, int bit_size, - struct type *type) + int bit_offset, int bit_size, + struct type *type) { struct value *v; - int src, /* Index into the source area. */ - targ, /* Index into the target area. */ - i, srcBitsLeft, /* Number of source bits left to move. */ - nsrc, ntarg, /* Number of source and target bytes. */ - unusedLS, /* Number of bits in next significant - * byte of source that are unused. */ - accumSize; /* Number of meaningful bits in accum */ - unsigned char *bytes; /* First byte containing data to unpack. */ + int src, /* Index into the source area */ + targ, /* Index into the target area */ + srcBitsLeft, /* Number of source bits left to move */ + nsrc, ntarg, /* Number of source and target bytes */ + unusedLS, /* Number of bits in next significant + byte of source that are unused */ + accumSize; /* Number of meaningful bits in accum */ + unsigned char *bytes; /* First byte containing data to unpack */ unsigned char *unpacked; - unsigned long accum; /* Staging area for bits being transferred */ + unsigned long accum; /* Staging area for bits being transferred */ unsigned char sign; int len = (bit_size + bit_offset + HOST_CHAR_BIT - 1) / 8; - /* Transmit bytes from least to most significant; delta is the - * direction the indices move. */ + /* Transmit bytes from least to most significant; delta is the direction + the indices move. */ int delta = BITS_BIG_ENDIAN ? -1 : 1; CHECK_TYPEDEF (type); @@ -1392,7 +1832,7 @@ ada_value_primitive_packed_val (struct value *obj, char *valaddr, long offset, else if (VALUE_LAZY (obj)) { v = value_at (type, - VALUE_ADDRESS (obj) + VALUE_OFFSET (obj) + offset, NULL); + VALUE_ADDRESS (obj) + VALUE_OFFSET (obj) + offset, NULL); bytes = (unsigned char *) alloca (len); read_memory (VALUE_ADDRESS (v), bytes, len); } @@ -1406,15 +1846,15 @@ ada_value_primitive_packed_val (struct value *obj, char *valaddr, long offset, { VALUE_LVAL (v) = VALUE_LVAL (obj); if (VALUE_LVAL (obj) == lval_internalvar) - VALUE_LVAL (v) = lval_internalvar_component; + VALUE_LVAL (v) = lval_internalvar_component; VALUE_ADDRESS (v) = VALUE_ADDRESS (obj) + VALUE_OFFSET (obj) + offset; VALUE_BITPOS (v) = bit_offset + VALUE_BITPOS (obj); VALUE_BITSIZE (v) = bit_size; if (VALUE_BITPOS (v) >= HOST_CHAR_BIT) - { - VALUE_ADDRESS (v) += 1; - VALUE_BITPOS (v) -= HOST_CHAR_BIT; - } + { + VALUE_ADDRESS (v) += 1; + VALUE_BITPOS (v) -= HOST_CHAR_BIT; + } } else VALUE_BITSIZE (v) = bit_size; @@ -1433,30 +1873,30 @@ ada_value_primitive_packed_val (struct value *obj, char *valaddr, long offset, { src = len - 1; if (has_negatives (type) && - ((bytes[0] << bit_offset) & (1 << (HOST_CHAR_BIT - 1)))) - sign = ~0; + ((bytes[0] << bit_offset) & (1 << (HOST_CHAR_BIT - 1)))) + sign = ~0; unusedLS = - (HOST_CHAR_BIT - (bit_size + bit_offset) % HOST_CHAR_BIT) - % HOST_CHAR_BIT; + (HOST_CHAR_BIT - (bit_size + bit_offset) % HOST_CHAR_BIT) + % HOST_CHAR_BIT; switch (TYPE_CODE (type)) - { - case TYPE_CODE_ARRAY: - case TYPE_CODE_UNION: - case TYPE_CODE_STRUCT: - /* Non-scalar values must be aligned at a byte boundary. */ - accumSize = - (HOST_CHAR_BIT - bit_size % HOST_CHAR_BIT) % HOST_CHAR_BIT; - /* And are placed at the beginning (most-significant) bytes - * of the target. */ - targ = src; - break; - default: - accumSize = 0; - targ = TYPE_LENGTH (type) - 1; - break; - } + { + case TYPE_CODE_ARRAY: + case TYPE_CODE_UNION: + case TYPE_CODE_STRUCT: + /* Non-scalar values must be aligned at a byte boundary... */ + accumSize = + (HOST_CHAR_BIT - bit_size % HOST_CHAR_BIT) % HOST_CHAR_BIT; + /* ... And are placed at the beginning (most-significant) bytes + of the target. */ + targ = src; + break; + default: + accumSize = 0; + targ = TYPE_LENGTH (type) - 1; + break; + } } else { @@ -1467,30 +1907,30 @@ ada_value_primitive_packed_val (struct value *obj, char *valaddr, long offset, accumSize = 0; if (has_negatives (type) && (bytes[len - 1] & (1 << sign_bit_offset))) - sign = ~0; + sign = ~0; } accum = 0; while (nsrc > 0) { /* Mask for removing bits of the next source byte that are not - * part of the value. */ + part of the value. */ unsigned int unusedMSMask = - (1 << (srcBitsLeft >= HOST_CHAR_BIT ? HOST_CHAR_BIT : srcBitsLeft)) - - 1; - /* Sign-extend bits for this byte. */ + (1 << (srcBitsLeft >= HOST_CHAR_BIT ? HOST_CHAR_BIT : srcBitsLeft)) - + 1; + /* Sign-extend bits for this byte. */ unsigned int signMask = sign & ~unusedMSMask; accum |= - (((bytes[src] >> unusedLS) & unusedMSMask) | signMask) << accumSize; + (((bytes[src] >> unusedLS) & unusedMSMask) | signMask) << accumSize; accumSize += HOST_CHAR_BIT - unusedLS; if (accumSize >= HOST_CHAR_BIT) - { - unpacked[targ] = accum & ~(~0L << HOST_CHAR_BIT); - accumSize -= HOST_CHAR_BIT; - accum >>= HOST_CHAR_BIT; - ntarg -= 1; - targ += delta; - } + { + unpacked[targ] = accum & ~(~0L << HOST_CHAR_BIT); + accumSize -= HOST_CHAR_BIT; + accum >>= HOST_CHAR_BIT; + ntarg -= 1; + targ += delta; + } srcBitsLeft -= HOST_CHAR_BIT - unusedLS; unusedLS = 0; nsrc -= 1; @@ -1511,7 +1951,7 @@ ada_value_primitive_packed_val (struct value *obj, char *valaddr, long offset, /* Move N bits from SOURCE, starting at bit offset SRC_OFFSET to TARGET, starting at bit offset TARG_OFFSET. SOURCE and TARGET must - not overlap. */ + not overlap. */ static void move_bits (char *target, int targ_offset, char *source, int src_offset, int n) { @@ -1529,24 +1969,24 @@ move_bits (char *target, int targ_offset, char *source, int src_offset, int n) accum_bits = HOST_CHAR_BIT - src_offset; while (n > 0) - { - int unused_right; - accum = (accum << HOST_CHAR_BIT) + (unsigned char) *source; - accum_bits += HOST_CHAR_BIT; - source += 1; - chunk_size = HOST_CHAR_BIT - targ_offset; - if (chunk_size > n) - chunk_size = n; - unused_right = HOST_CHAR_BIT - (chunk_size + targ_offset); - mask = ((1 << chunk_size) - 1) << unused_right; - *target = - (*target & ~mask) - | ((accum >> (accum_bits - chunk_size - unused_right)) & mask); - n -= chunk_size; - accum_bits -= chunk_size; - target += 1; - targ_offset = 0; - } + { + int unused_right; + accum = (accum << HOST_CHAR_BIT) + (unsigned char) *source; + accum_bits += HOST_CHAR_BIT; + source += 1; + chunk_size = HOST_CHAR_BIT - targ_offset; + if (chunk_size > n) + chunk_size = n; + unused_right = HOST_CHAR_BIT - (chunk_size + targ_offset); + mask = ((1 << chunk_size) - 1) << unused_right; + *target = + (*target & ~mask) + | ((accum >> (accum_bits - chunk_size - unused_right)) & mask); + n -= chunk_size; + accum_bits -= chunk_size; + target += 1; + targ_offset = 0; + } } else { @@ -1555,21 +1995,21 @@ move_bits (char *target, int targ_offset, char *source, int src_offset, int n) accum_bits = HOST_CHAR_BIT - src_offset; while (n > 0) - { - accum = accum + ((unsigned char) *source << accum_bits); - accum_bits += HOST_CHAR_BIT; - source += 1; - chunk_size = HOST_CHAR_BIT - targ_offset; - if (chunk_size > n) - chunk_size = n; - mask = ((1 << chunk_size) - 1) << targ_offset; - *target = (*target & ~mask) | ((accum << targ_offset) & mask); - n -= chunk_size; - accum_bits -= chunk_size; - accum >>= chunk_size; - target += 1; - targ_offset = 0; - } + { + accum = accum + ((unsigned char) *source << accum_bits); + accum_bits += HOST_CHAR_BIT; + source += 1; + chunk_size = HOST_CHAR_BIT - targ_offset; + if (chunk_size > n) + chunk_size = n; + mask = ((1 << chunk_size) - 1) << targ_offset; + *target = (*target & ~mask) | ((accum << targ_offset) & mask); + n -= chunk_size; + accum_bits -= chunk_size; + accum >>= chunk_size; + target += 1; + targ_offset = 0; + } } } @@ -1577,7 +2017,7 @@ move_bits (char *target, int targ_offset, char *source, int src_offset, int n) /* Store the contents of FROMVAL into the location of TOVAL. Return a new value with the location of TOVAL and contents of FROMVAL. Handles assignment into packed fields that have - floating-point or non-scalar types. */ + floating-point or non-scalar types. */ static struct value * ada_value_assign (struct value *toval, struct value *fromval) @@ -1593,31 +2033,31 @@ ada_value_assign (struct value *toval, struct value *fromval) if (VALUE_LVAL (toval) == lval_memory && bits > 0 && (TYPE_CODE (type) == TYPE_CODE_FLT - || TYPE_CODE (type) == TYPE_CODE_STRUCT)) + || TYPE_CODE (type) == TYPE_CODE_STRUCT)) { int len = - (VALUE_BITPOS (toval) + bits + HOST_CHAR_BIT - 1) / HOST_CHAR_BIT; + (VALUE_BITPOS (toval) + bits + HOST_CHAR_BIT - 1) / HOST_CHAR_BIT; char *buffer = (char *) alloca (len); struct value *val; if (TYPE_CODE (type) == TYPE_CODE_FLT) - fromval = value_cast (type, fromval); + fromval = value_cast (type, fromval); read_memory (VALUE_ADDRESS (toval) + VALUE_OFFSET (toval), buffer, len); if (BITS_BIG_ENDIAN) - move_bits (buffer, VALUE_BITPOS (toval), - VALUE_CONTENTS (fromval), - TYPE_LENGTH (VALUE_TYPE (fromval)) * TARGET_CHAR_BIT - - bits, bits); + move_bits (buffer, VALUE_BITPOS (toval), + VALUE_CONTENTS (fromval), + TYPE_LENGTH (VALUE_TYPE (fromval)) * TARGET_CHAR_BIT - + bits, bits); else - move_bits (buffer, VALUE_BITPOS (toval), VALUE_CONTENTS (fromval), - 0, bits); + move_bits (buffer, VALUE_BITPOS (toval), VALUE_CONTENTS (fromval), + 0, bits); write_memory (VALUE_ADDRESS (toval) + VALUE_OFFSET (toval), buffer, - len); + len); val = value_copy (toval); memcpy (VALUE_CONTENTS_RAW (val), VALUE_CONTENTS (fromval), - TYPE_LENGTH (type)); + TYPE_LENGTH (type)); VALUE_TYPE (val) = type; return val; @@ -1627,8 +2067,8 @@ ada_value_assign (struct value *toval, struct value *fromval) } -/* The value of the element of array ARR at the ARITY indices given in IND. - ARR may be either a simple array, GNAT array descriptor, or pointer +/* The value of the element of array ARR at the ARITY indices given in IND. + ARR may be either a simple array, GNAT array descriptor, or pointer thereto. */ struct value * @@ -1648,7 +2088,7 @@ ada_value_subscript (struct value *arr, int arity, struct value **ind) for (k = 0; k < arity; k += 1) { if (TYPE_CODE (elt_type) != TYPE_CODE_ARRAY) - error ("too many subscripts (%d expected)", k); + error ("too many subscripts (%d expected)", k); elt = value_subscript (elt, value_pos_atr (ind[k])); } return elt; @@ -1656,11 +2096,11 @@ ada_value_subscript (struct value *arr, int arity, struct value **ind) /* Assuming ARR is a pointer to a standard GDB array of type TYPE, the value of the element of *ARR at the ARITY indices given in - IND. Does not read the entire array into memory. */ + IND. Does not read the entire array into memory. */ struct value * ada_value_ptr_subscript (struct value *arr, struct type *type, int arity, - struct value **ind) + struct value **ind) { int k; @@ -1670,14 +2110,13 @@ ada_value_ptr_subscript (struct value *arr, struct type *type, int arity, struct value *idx; if (TYPE_CODE (type) != TYPE_CODE_ARRAY) - error ("too many subscripts (%d expected)", k); + error ("too many subscripts (%d expected)", k); arr = value_cast (lookup_pointer_type (TYPE_TARGET_TYPE (type)), - value_copy (arr)); + value_copy (arr)); get_discrete_bounds (TYPE_INDEX_TYPE (type), &lwb, &upb); - if (lwb == 0) - idx = ind[k]; - else - idx = value_sub (ind[k], value_from_longest (builtin_type_int, lwb)); + idx = value_pos_atr (ind[k]); + if (lwb != 0) + idx = value_sub (idx, value_from_longest (builtin_type_int, lwb)); arr = value_add (arr, idx); type = TYPE_TARGET_TYPE (type); } @@ -1688,7 +2127,7 @@ ada_value_ptr_subscript (struct value *arr, struct type *type, int arity, /* If type is a record type in the form of a standard GNAT array descriptor, returns the number of dimensions for type. If arr is a simple array, returns the number of "array of"s that prefix its - type designation. Otherwise, returns 0. */ + type designation. Otherwise, returns 0. */ int ada_array_arity (struct type *type) @@ -1706,8 +2145,8 @@ ada_array_arity (struct type *type) else while (TYPE_CODE (type) == TYPE_CODE_ARRAY) { - arity += 1; - type = check_typedef (TYPE_TARGET_TYPE (type)); + arity += 1; + type = check_typedef (TYPE_TARGET_TYPE (type)); } return arity; @@ -1716,7 +2155,7 @@ ada_array_arity (struct type *type) /* If TYPE is a record type in the form of a standard GNAT array descriptor or a simple array type, returns the element type for TYPE after indexing by NINDICES indices, or by all indices if - NINDICES is -1. Otherwise, returns NULL. */ + NINDICES is -1. Otherwise, returns NULL. */ struct type * ada_array_element_type (struct type *type, int nindices) @@ -1732,51 +2171,60 @@ ada_array_element_type (struct type *type, int nindices) k = ada_array_arity (type); if (k == 0) - return NULL; + return NULL; - /* Initially p_array_type = elt_type(*)[]...(k times)...[] */ + /* Initially p_array_type = elt_type(*)[]...(k times)...[]. */ if (nindices >= 0 && k > nindices) - k = nindices; + k = nindices; p_array_type = TYPE_TARGET_TYPE (p_array_type); while (k > 0 && p_array_type != NULL) - { - p_array_type = check_typedef (TYPE_TARGET_TYPE (p_array_type)); - k -= 1; - } + { + p_array_type = check_typedef (TYPE_TARGET_TYPE (p_array_type)); + k -= 1; + } return p_array_type; } else if (TYPE_CODE (type) == TYPE_CODE_ARRAY) { while (nindices != 0 && TYPE_CODE (type) == TYPE_CODE_ARRAY) - { - type = TYPE_TARGET_TYPE (type); - nindices -= 1; - } + { + type = TYPE_TARGET_TYPE (type); + nindices -= 1; + } return type; } return NULL; } -/* The type of nth index in arrays of given type (n numbering from 1). Does - not examine memory. */ +/* The type of nth index in arrays of given type (n numbering from 1). + Does not examine memory. */ struct type * ada_index_type (struct type *type, int n) { + struct type *result_type; + type = desc_base_type (type); if (n > ada_array_arity (type)) return NULL; - if (ada_is_simple_array (type)) + if (ada_is_simple_array_type (type)) { int i; for (i = 1; i < n; i += 1) - type = TYPE_TARGET_TYPE (type); + type = TYPE_TARGET_TYPE (type); + result_type = TYPE_TARGET_TYPE (TYPE_FIELD_TYPE (type, 0)); + /* FIXME: The stabs type r(0,0);bound;bound in an array type + has a target type of TYPE_CODE_UNDEF. We compensate here, but + perhaps stabsread.c would make more sense. */ + if (result_type == NULL + || TYPE_CODE (result_type) == TYPE_CODE_UNDEF) + result_type = builtin_type_int; - return TYPE_TARGET_TYPE (TYPE_FIELD_TYPE (type, 0)); + return result_type; } else return desc_index_type (desc_bounds_type (type), n); @@ -1784,14 +2232,14 @@ ada_index_type (struct type *type, int n) /* Given that arr is an array type, returns the lower bound of the Nth index (numbering from 1) if WHICH is 0, and the upper bound if - WHICH is 1. This returns bounds 0 .. -1 if ARR_TYPE is an - array-descriptor type. If TYPEP is non-null, *TYPEP is set to the - bounds type. It works for other arrays with bounds supplied by - run-time quantities other than discriminants. */ + WHICH is 1. This returns bounds 0 .. -1 if ARR_TYPE is an + array-descriptor type. If TYPEP is non-null, *TYPEP is set to the + bounds type. It works for other arrays with bounds supplied by + run-time quantities other than discriminants. */ LONGEST ada_array_bound_from_type (struct type * arr_type, int n, int which, - struct type ** typep) + struct type ** typep) { struct type *type; struct type *index_type_desc; @@ -1799,10 +2247,10 @@ ada_array_bound_from_type (struct type * arr_type, int n, int which, if (ada_is_packed_array_type (arr_type)) arr_type = decode_packed_array_type (arr_type); - if (arr_type == NULL || !ada_is_simple_array (arr_type)) + if (arr_type == NULL || !ada_is_simple_array_type (arr_type)) { if (typep != NULL) - *typep = builtin_type_int; + *typep = builtin_type_int; return (LONGEST) - which; } @@ -1818,40 +2266,40 @@ ada_array_bound_from_type (struct type * arr_type, int n, int which, struct type *index_type; while (n > 1) - { - type = TYPE_TARGET_TYPE (type); - n -= 1; - } + { + type = TYPE_TARGET_TYPE (type); + n -= 1; + } range_type = TYPE_INDEX_TYPE (type); index_type = TYPE_TARGET_TYPE (range_type); if (TYPE_CODE (index_type) == TYPE_CODE_UNDEF) - index_type = builtin_type_long; + index_type = builtin_type_long; if (typep != NULL) - *typep = index_type; + *typep = index_type; return - (LONGEST) (which == 0 - ? TYPE_LOW_BOUND (range_type) - : TYPE_HIGH_BOUND (range_type)); + (LONGEST) (which == 0 + ? TYPE_LOW_BOUND (range_type) + : TYPE_HIGH_BOUND (range_type)); } else { struct type *index_type = - to_fixed_range_type (TYPE_FIELD_NAME (index_type_desc, n - 1), - NULL, TYPE_OBJFILE (arr_type)); + to_fixed_range_type (TYPE_FIELD_NAME (index_type_desc, n - 1), + NULL, TYPE_OBJFILE (arr_type)); if (typep != NULL) - *typep = TYPE_TARGET_TYPE (index_type); + *typep = TYPE_TARGET_TYPE (index_type); return - (LONGEST) (which == 0 - ? TYPE_LOW_BOUND (index_type) - : TYPE_HIGH_BOUND (index_type)); + (LONGEST) (which == 0 + ? TYPE_LOW_BOUND (index_type) + : TYPE_HIGH_BOUND (index_type)); } } /* Given that arr is an array value, returns the lower bound of the nth index (numbering from 1) if which is 0, and the upper bound if - which is 1. This routine will also work for arrays with bounds - supplied by run-time quantities other than discriminants. */ + which is 1. This routine will also work for arrays with bounds + supplied by run-time quantities other than discriminants. */ struct value * ada_array_bound (struct value *arr, int n, int which) @@ -1860,7 +2308,7 @@ ada_array_bound (struct value *arr, int n, int which) if (ada_is_packed_array_type (arr_type)) return ada_array_bound (decode_packed_array (arr), n, which); - else if (ada_is_simple_array (arr_type)) + else if (ada_is_simple_array_type (arr_type)) { struct type *type; LONGEST v = ada_array_bound_from_type (arr_type, n, which, &type); @@ -1872,369 +2320,356 @@ ada_array_bound (struct value *arr, int n, int which) /* Given that arr is an array value, returns the length of the nth index. This routine will also work for arrays with bounds - supplied by run-time quantities other than discriminants. Does not - work for arrays indexed by enumeration types with representation - clauses at the moment. */ + supplied by run-time quantities other than discriminants. + Does not work for arrays indexed by enumeration types with representation + clauses at the moment. */ struct value * ada_array_length (struct value *arr, int n) { struct type *arr_type = check_typedef (VALUE_TYPE (arr)); - struct type *index_type_desc; if (ada_is_packed_array_type (arr_type)) return ada_array_length (decode_packed_array (arr), n); - if (ada_is_simple_array (arr_type)) + if (ada_is_simple_array_type (arr_type)) { struct type *type; LONGEST v = - ada_array_bound_from_type (arr_type, n, 1, &type) - - ada_array_bound_from_type (arr_type, n, 0, NULL) + 1; + ada_array_bound_from_type (arr_type, n, 1, &type) - + ada_array_bound_from_type (arr_type, n, 0, NULL) + 1; return value_from_longest (type, v); } else return value_from_longest (builtin_type_ada_int, - value_as_long (desc_one_bound (desc_bounds (arr), - n, 1)) - - value_as_long (desc_one_bound (desc_bounds (arr), - n, 0)) + 1); + value_as_long (desc_one_bound (desc_bounds (arr), + n, 1)) + - value_as_long (desc_one_bound (desc_bounds (arr), + n, 0)) + 1); +} + +/* An empty array whose type is that of ARR_TYPE (an array type), + with bounds LOW to LOW-1. */ + +static struct value * +empty_array (struct type *arr_type, int low) +{ + return allocate_value (create_range_type (NULL, TYPE_INDEX_TYPE (arr_type), + low, low - 1)); } - /* Name resolution */ + /* Name resolution */ -/* The "demangled" name for the user-definable Ada operator corresponding - to op. */ +/* The "decoded" name for the user-definable Ada operator corresponding + to OP. */ static const char * -ada_op_name (enum exp_opcode op) +ada_decoded_op_name (enum exp_opcode op) { int i; - for (i = 0; ada_opname_table[i].mangled != NULL; i += 1) + for (i = 0; ada_opname_table[i].encoded != NULL; i += 1) { if (ada_opname_table[i].op == op) - return ada_opname_table[i].demangled; + return ada_opname_table[i].decoded; } error ("Could not find operator name for opcode"); } -/* Same as evaluate_type (*EXP), but resolves ambiguous symbol - references (OP_UNRESOLVED_VALUES) and converts operators that are - user-defined into appropriate function calls. If CONTEXT_TYPE is +/* Same as evaluate_type (*EXP), but resolves ambiguous symbol + references (marked by OP_VAR_VALUE nodes in which the symbol has an + undefined namespace) and converts operators that are + user-defined into appropriate function calls. If CONTEXT_TYPE is non-null, it provides a preferred result type [at the moment, only type void has any effect---causing procedures to be preferred over functions in calls]. A null CONTEXT_TYPE indicates that a non-void - return type is preferred. The variable unresolved_names contains a list - of character strings referenced by expout that should be freed. - May change (expand) *EXP. */ + return type is preferred. May change (expand) *EXP. */ -void -ada_resolve (struct expression **expp, struct type *context_type) +static void +resolve (struct expression **expp, int void_context_p) { int pc; pc = 0; - ada_resolve_subexp (expp, &pc, 1, context_type); + resolve_subexp (expp, &pc, 1, void_context_p ? builtin_type_void : NULL); } -/* Resolve the operator of the subexpression beginning at - position *POS of *EXPP. "Resolving" consists of replacing - OP_UNRESOLVED_VALUE with an appropriate OP_VAR_VALUE, replacing - built-in operators with function calls to user-defined operators, - where appropriate, and (when DEPROCEDURE_P is non-zero), converting - function-valued variables into parameterless calls. May expand - EXP. The CONTEXT_TYPE functions as in ada_resolve, above. */ +/* Resolve the operator of the subexpression beginning at + position *POS of *EXPP. "Resolving" consists of replacing + the symbols that have undefined namespaces in OP_VAR_VALUE nodes + with their resolutions, replacing built-in operators with + function calls to user-defined operators, where appropriate, and, + when DEPROCEDURE_P is non-zero, converting function-valued variables + into parameterless calls. May expand *EXPP. The CONTEXT_TYPE functions + are as in ada_resolve, above. */ static struct value * -ada_resolve_subexp (struct expression **expp, int *pos, int deprocedure_p, - struct type *context_type) +resolve_subexp (struct expression **expp, int *pos, int deprocedure_p, + struct type *context_type) { int pc = *pos; int i; - struct expression *exp; /* Convenience: == *expp */ + struct expression *exp; /* Convenience: == *expp. */ enum exp_opcode op = (*expp)->elts[pc].opcode; - struct value **argvec; /* Vector of operand types (alloca'ed). */ - int nargs; /* Number of operands */ + struct value **argvec; /* Vector of operand types (alloca'ed). */ + int nargs; /* Number of operands. */ argvec = NULL; nargs = 0; exp = *expp; - /* Pass one: resolve operands, saving their types and updating *pos. */ + /* Pass one: resolve operands, saving their types and updating *pos. */ switch (op) { - case OP_VAR_VALUE: - /* case OP_UNRESOLVED_VALUE: */ - /* FIXME: OP_UNRESOLVED_VALUE should be defined in expression.h */ - *pos += 4; + case OP_FUNCALL: + if (exp->elts[pc + 3].opcode == OP_VAR_VALUE + && SYMBOL_DOMAIN (exp->elts[pc + 5].symbol) == UNDEF_DOMAIN) + *pos += 7; + else + { + *pos += 3; + resolve_subexp (expp, pos, 0, NULL); + } + nargs = longest_to_int (exp->elts[pc + 1].longconst); break; - case OP_FUNCALL: - nargs = longest_to_int (exp->elts[pc + 1].longconst) + 1; - /* FIXME: OP_UNRESOLVED_VALUE should be defined in expression.h */ - /* if (exp->elts[pc+3].opcode == OP_UNRESOLVED_VALUE) - { - *pos += 7; - - argvec = (struct value* *) alloca (sizeof (struct value*) * (nargs + 1)); - for (i = 0; i < nargs-1; i += 1) - argvec[i] = ada_resolve_subexp (expp, pos, 1, NULL); - argvec[i] = NULL; - } - else - { - *pos += 3; - ada_resolve_subexp (expp, pos, 0, NULL); - for (i = 1; i < nargs; i += 1) - ada_resolve_subexp (expp, pos, 1, NULL); - } - */ - exp = *expp; + case UNOP_QUAL: + *pos += 3; + resolve_subexp (expp, pos, 1, exp->elts[pc + 1].type); break; - /* FIXME: UNOP_QUAL should be defined in expression.h */ - /* case UNOP_QUAL: - nargs = 1; - *pos += 3; - ada_resolve_subexp (expp, pos, 1, exp->elts[pc + 1].type); - exp = *expp; - break; - */ - /* FIXME: OP_ATTRIBUTE should be defined in expression.h */ - /* case OP_ATTRIBUTE: - nargs = longest_to_int (exp->elts[pc + 1].longconst) + 1; - *pos += 4; - for (i = 0; i < nargs; i += 1) - ada_resolve_subexp (expp, pos, 1, NULL); - exp = *expp; - break; - */ case UNOP_ADDR: + *pos += 1; + resolve_subexp (expp, pos, 0, NULL); + break; + + case OP_ATR_MODULUS: + *pos += 4; + break; + + case OP_ATR_SIZE: + case OP_ATR_TAG: + *pos += 1; nargs = 1; + break; + + case OP_ATR_FIRST: + case OP_ATR_LAST: + case OP_ATR_LENGTH: + case OP_ATR_POS: + case OP_ATR_VAL: *pos += 1; - ada_resolve_subexp (expp, pos, 0, NULL); - exp = *expp; + nargs = 2; + break; + + case OP_ATR_MIN: + case OP_ATR_MAX: + *pos += 1; + nargs = 3; break; case BINOP_ASSIGN: { - struct value *arg1; - nargs = 2; - *pos += 1; - arg1 = ada_resolve_subexp (expp, pos, 0, NULL); - if (arg1 == NULL) - ada_resolve_subexp (expp, pos, 1, NULL); - else - ada_resolve_subexp (expp, pos, 1, VALUE_TYPE (arg1)); - break; + struct value *arg1; + + *pos += 1; + arg1 = resolve_subexp (expp, pos, 0, NULL); + if (arg1 == NULL) + resolve_subexp (expp, pos, 1, NULL); + else + resolve_subexp (expp, pos, 1, VALUE_TYPE (arg1)); + break; } - default: - switch (op) - { - default: - error ("Unexpected operator during name resolution"); - case UNOP_CAST: - /* case UNOP_MBR: - nargs = 1; - *pos += 3; - break; - */ - case BINOP_ADD: - case BINOP_SUB: - case BINOP_MUL: - case BINOP_DIV: - case BINOP_REM: - case BINOP_MOD: - case BINOP_EXP: - case BINOP_CONCAT: - case BINOP_LOGICAL_AND: - case BINOP_LOGICAL_OR: - case BINOP_BITWISE_AND: - case BINOP_BITWISE_IOR: - case BINOP_BITWISE_XOR: - - case BINOP_EQUAL: - case BINOP_NOTEQUAL: - case BINOP_LESS: - case BINOP_GTR: - case BINOP_LEQ: - case BINOP_GEQ: - - case BINOP_REPEAT: - case BINOP_SUBSCRIPT: - case BINOP_COMMA: - nargs = 2; - *pos += 1; - break; + case UNOP_CAST: + case UNOP_IN_RANGE: + *pos += 3; + nargs = 1; + break; - case UNOP_NEG: - case UNOP_PLUS: - case UNOP_LOGICAL_NOT: - case UNOP_ABS: - case UNOP_IND: - nargs = 1; - *pos += 1; - break; + case BINOP_ADD: + case BINOP_SUB: + case BINOP_MUL: + case BINOP_DIV: + case BINOP_REM: + case BINOP_MOD: + case BINOP_EXP: + case BINOP_CONCAT: + case BINOP_LOGICAL_AND: + case BINOP_LOGICAL_OR: + case BINOP_BITWISE_AND: + case BINOP_BITWISE_IOR: + case BINOP_BITWISE_XOR: - case OP_LONG: - case OP_DOUBLE: - case OP_VAR_VALUE: - *pos += 4; - break; + case BINOP_EQUAL: + case BINOP_NOTEQUAL: + case BINOP_LESS: + case BINOP_GTR: + case BINOP_LEQ: + case BINOP_GEQ: - case OP_TYPE: - case OP_BOOL: - case OP_LAST: - case OP_REGISTER: - case OP_INTERNALVAR: - *pos += 3; - break; + case BINOP_REPEAT: + case BINOP_SUBSCRIPT: + case BINOP_COMMA: + *pos += 1; + nargs = 2; + break; - case UNOP_MEMVAL: - *pos += 3; - nargs = 1; - break; + case UNOP_NEG: + case UNOP_PLUS: + case UNOP_LOGICAL_NOT: + case UNOP_ABS: + case UNOP_IND: + *pos += 1; + nargs = 1; + break; - case STRUCTOP_STRUCT: - case STRUCTOP_PTR: - nargs = 1; - *pos += 4 + BYTES_TO_EXP_ELEM (exp->elts[pc + 1].longconst + 1); - break; + case OP_LONG: + case OP_DOUBLE: + case OP_VAR_VALUE: + *pos += 4; + break; - case OP_ARRAY: - *pos += 4; - nargs = longest_to_int (exp->elts[pc + 2].longconst) + 1; - nargs -= longest_to_int (exp->elts[pc + 1].longconst); - /* A null array contains one dummy element to give the type. */ - /* if (nargs == 0) - nargs = 1; - break; */ - - case TERNOP_SLICE: - /* FIXME: TERNOP_MBR should be defined in expression.h */ - /* case TERNOP_MBR: - *pos += 1; - nargs = 3; - break; - */ - /* FIXME: BINOP_MBR should be defined in expression.h */ - /* case BINOP_MBR: - *pos += 3; - nargs = 2; - break; */ - } + case OP_TYPE: + case OP_BOOL: + case OP_LAST: + case OP_REGISTER: + case OP_INTERNALVAR: + *pos += 3; + break; - argvec = - (struct value * *) alloca (sizeof (struct value *) * (nargs + 1)); - for (i = 0; i < nargs; i += 1) - argvec[i] = ada_resolve_subexp (expp, pos, 1, NULL); - argvec[i] = NULL; - exp = *expp; + case UNOP_MEMVAL: + *pos += 3; + nargs = 1; + break; + + case STRUCTOP_STRUCT: + *pos += 4 + BYTES_TO_EXP_ELEM (exp->elts[pc + 1].longconst + 1); + nargs = 1; break; + + case OP_STRING: + (*pos) += 3 + + BYTES_TO_EXP_ELEM (longest_to_int (exp->elts[pc + 1].longconst) + 1); + break; + + case TERNOP_SLICE: + case TERNOP_IN_RANGE: + *pos += 1; + nargs = 3; + break; + + case BINOP_IN_BOUNDS: + *pos += 3; + nargs = 2; + break; + + default: + error ("Unexpected operator during name resolution"); } - /* Pass two: perform any resolution on principal operator. */ + argvec = + (struct value * *) alloca (sizeof (struct value *) * (nargs + 1)); + for (i = 0; i < nargs; i += 1) + argvec[i] = resolve_subexp (expp, pos, 1, NULL); + argvec[i] = NULL; + exp = *expp; + + /* Pass two: perform any resolution on principal operator. */ switch (op) { default: break; - /* FIXME: OP_UNRESOLVED_VALUE should be defined in expression.h */ - /* case OP_UNRESOLVED_VALUE: - { - struct symbol** candidate_syms; - struct block** candidate_blocks; - int n_candidates; - - n_candidates = ada_lookup_symbol_list (exp->elts[pc + 2].name, - exp->elts[pc + 1].block, - VAR_DOMAIN, - &candidate_syms, - &candidate_blocks); - - if (n_candidates > 1) - { */ - /* Types tend to get re-introduced locally, so if there - are any local symbols that are not types, first filter - out all types. *//* - int j; - for (j = 0; j < n_candidates; j += 1) - switch (SYMBOL_CLASS (candidate_syms[j])) - { - case LOC_REGISTER: - case LOC_ARG: - case LOC_REF_ARG: - case LOC_REGPARM: - case LOC_REGPARM_ADDR: - case LOC_LOCAL: - case LOC_LOCAL_ARG: - case LOC_BASEREG: - case LOC_BASEREG_ARG: - case LOC_COMPUTED: - case LOC_COMPUTED_ARG: - goto FoundNonType; - default: - break; - } - FoundNonType: - if (j < n_candidates) - { - j = 0; - while (j < n_candidates) - { - if (SYMBOL_CLASS (candidate_syms[j]) == LOC_TYPEDEF) - { - candidate_syms[j] = candidate_syms[n_candidates-1]; - candidate_blocks[j] = candidate_blocks[n_candidates-1]; - n_candidates -= 1; - } - else - j += 1; - } - } - } - - if (n_candidates == 0) - error ("No definition found for %s", - ada_demangle (exp->elts[pc + 2].name)); - else if (n_candidates == 1) - i = 0; - else if (deprocedure_p - && ! is_nonfunction (candidate_syms, n_candidates)) - { - i = ada_resolve_function (candidate_syms, candidate_blocks, - n_candidates, NULL, 0, - exp->elts[pc + 2].name, context_type); - if (i < 0) - error ("Could not find a match for %s", - ada_demangle (exp->elts[pc + 2].name)); - } - else - { - printf_filtered ("Multiple matches for %s\n", - ada_demangle (exp->elts[pc+2].name)); - user_select_syms (candidate_syms, candidate_blocks, - n_candidates, 1); - i = 0; - } - - exp->elts[pc].opcode = exp->elts[pc + 3].opcode = OP_VAR_VALUE; - exp->elts[pc + 1].block = candidate_blocks[i]; - exp->elts[pc + 2].symbol = candidate_syms[i]; - if (innermost_block == NULL || - contained_in (candidate_blocks[i], innermost_block)) - innermost_block = candidate_blocks[i]; - } */ - /* FALL THROUGH */ - case OP_VAR_VALUE: - if (deprocedure_p && - TYPE_CODE (SYMBOL_TYPE (exp->elts[pc + 2].symbol)) == - TYPE_CODE_FUNC) + if (SYMBOL_DOMAIN (exp->elts[pc + 2].symbol) == UNDEF_DOMAIN) + { + struct ada_symbol_info *candidates; + int n_candidates; + + n_candidates = + ada_lookup_symbol_list (SYMBOL_LINKAGE_NAME (exp->elts[pc + 2] + .symbol), + exp->elts[pc + 1].block, + VAR_DOMAIN, &candidates); + + if (n_candidates > 1) + { + /* Types tend to get re-introduced locally, so if there + are any local symbols that are not types, first filter + out all types. */ + int j; + for (j = 0; j < n_candidates; j += 1) + switch (SYMBOL_CLASS (candidates[j].sym)) + { + case LOC_REGISTER: + case LOC_ARG: + case LOC_REF_ARG: + case LOC_REGPARM: + case LOC_REGPARM_ADDR: + case LOC_LOCAL: + case LOC_LOCAL_ARG: + case LOC_BASEREG: + case LOC_BASEREG_ARG: + case LOC_COMPUTED: + case LOC_COMPUTED_ARG: + goto FoundNonType; + default: + break; + } + FoundNonType: + if (j < n_candidates) + { + j = 0; + while (j < n_candidates) + { + if (SYMBOL_CLASS (candidates[j].sym) == LOC_TYPEDEF) + { + candidates[j] = candidates[n_candidates - 1]; + n_candidates -= 1; + } + else + j += 1; + } + } + } + + if (n_candidates == 0) + error ("No definition found for %s", + SYMBOL_PRINT_NAME (exp->elts[pc + 2].symbol)); + else if (n_candidates == 1) + i = 0; + else if (deprocedure_p + && !is_nonfunction (candidates, n_candidates)) + { + i = ada_resolve_function (candidates, n_candidates, NULL, 0, + SYMBOL_LINKAGE_NAME (exp->elts[pc + 2] + .symbol), + context_type); + if (i < 0) + error ("Could not find a match for %s", + SYMBOL_PRINT_NAME (exp->elts[pc + 2].symbol)); + } + else + { + printf_filtered ("Multiple matches for %s\n", + SYMBOL_PRINT_NAME (exp->elts[pc + 2].symbol)); + user_select_syms (candidates, n_candidates, 1); + i = 0; + } + + exp->elts[pc + 1].block = candidates[i].block; + exp->elts[pc + 2].symbol = candidates[i].sym; + if (innermost_block == NULL || + contained_in (candidates[i].block, innermost_block)) + innermost_block = candidates[i].block; + } + + if (deprocedure_p + && (TYPE_CODE (SYMBOL_TYPE (exp->elts[pc + 2].symbol)) + == TYPE_CODE_FUNC)) { replace_operator_with_call (expp, pc, 0, 0, exp->elts[pc + 2].symbol, @@ -2245,38 +2680,37 @@ ada_resolve_subexp (struct expression **expp, int *pos, int deprocedure_p, case OP_FUNCALL: { - /* FIXME: OP_UNRESOLVED_VALUE should be defined in expression.h */ - /* if (exp->elts[pc+3].opcode == OP_UNRESOLVED_VALUE) - { - struct symbol** candidate_syms; - struct block** candidate_blocks; - int n_candidates; - - n_candidates = ada_lookup_symbol_list (exp->elts[pc + 5].name, - exp->elts[pc + 4].block, - VAR_DOMAIN, - &candidate_syms, - &candidate_blocks); - if (n_candidates == 1) - i = 0; - else - { - i = ada_resolve_function (candidate_syms, candidate_blocks, - n_candidates, argvec, nargs-1, - exp->elts[pc + 5].name, context_type); - if (i < 0) - error ("Could not find a match for %s", - ada_demangle (exp->elts[pc + 5].name)); - } - - exp->elts[pc + 3].opcode = exp->elts[pc + 6].opcode = OP_VAR_VALUE; - exp->elts[pc + 4].block = candidate_blocks[i]; - exp->elts[pc + 5].symbol = candidate_syms[i]; - if (innermost_block == NULL || - contained_in (candidate_blocks[i], innermost_block)) - innermost_block = candidate_blocks[i]; - } */ - + if (exp->elts[pc + 3].opcode == OP_VAR_VALUE + && SYMBOL_DOMAIN (exp->elts[pc + 5].symbol) == UNDEF_DOMAIN) + { + struct ada_symbol_info *candidates; + int n_candidates; + + n_candidates = + ada_lookup_symbol_list (SYMBOL_LINKAGE_NAME (exp->elts[pc + 5] + .symbol), + exp->elts[pc + 4].block, + VAR_DOMAIN, &candidates); + if (n_candidates == 1) + i = 0; + else + { + i = ada_resolve_function (candidates, n_candidates, + argvec, nargs, + SYMBOL_LINKAGE_NAME (exp->elts[pc+5] + .symbol), + context_type); + if (i < 0) + error ("Could not find a match for %s", + SYMBOL_PRINT_NAME (exp->elts[pc + 5].symbol)); + } + + exp->elts[pc + 4].block = candidates[i].block; + exp->elts[pc + 5].symbol = candidates[i].sym; + if (innermost_block == NULL || + contained_in (candidates[i].block, innermost_block)) + innermost_block = candidates[i].block; + } } break; case BINOP_ADD: @@ -2301,27 +2735,27 @@ ada_resolve_subexp (struct expression **expp, int *pos, int deprocedure_p, case UNOP_LOGICAL_NOT: case UNOP_ABS: if (possible_user_operator_p (op, argvec)) - { - struct symbol **candidate_syms; - struct block **candidate_blocks; - int n_candidates; - - n_candidates = - ada_lookup_symbol_list (ada_mangle (ada_op_name (op)), - (struct block *) NULL, VAR_DOMAIN, - &candidate_syms, &candidate_blocks); - i = - ada_resolve_function (candidate_syms, candidate_blocks, - n_candidates, argvec, nargs, - ada_op_name (op), NULL); - if (i < 0) - break; - - replace_operator_with_call (expp, pc, nargs, 1, - candidate_syms[i], candidate_blocks[i]); - exp = *expp; - } + { + struct ada_symbol_info *candidates; + int n_candidates; + + n_candidates = + ada_lookup_symbol_list (ada_encode (ada_decoded_op_name (op)), + (struct block *) NULL, VAR_DOMAIN, + &candidates); + i = ada_resolve_function (candidates, n_candidates, argvec, nargs, + ada_decoded_op_name (op), NULL); + if (i < 0) + break; + + replace_operator_with_call (expp, pc, nargs, 1, + candidates[i].sym, candidates[i].block); + exp = *expp; + } break; + + case OP_TYPE: + return NULL; } *pos = pc; @@ -2329,10 +2763,11 @@ ada_resolve_subexp (struct expression **expp, int *pos, int deprocedure_p, } /* Return non-zero if formal type FTYPE matches actual type ATYPE. If - MAY_DEREF is non-zero, the formal may be a pointer and the actual - a non-pointer. */ + MAY_DEREF is non-zero, the formal may be a pointer and the actual + a non-pointer. A type of 'void' (which is never a valid expression type) + by convention matches anything. */ /* The term "match" here is rather loose. The match is heuristic and - liberal. FIXME: TOO liberal, in fact. */ + liberal. FIXME: TOO liberal, in fact. */ static int ada_type_match (struct type *ftype, struct type *atype, int may_deref) @@ -2355,35 +2790,35 @@ ada_type_match (struct type *ftype, struct type *atype, int may_deref) return 1; case TYPE_CODE_PTR: if (TYPE_CODE (atype) == TYPE_CODE_PTR) - return ada_type_match (TYPE_TARGET_TYPE (ftype), - TYPE_TARGET_TYPE (atype), 0); + return ada_type_match (TYPE_TARGET_TYPE (ftype), + TYPE_TARGET_TYPE (atype), 0); else - return (may_deref && - ada_type_match (TYPE_TARGET_TYPE (ftype), atype, 0)); + return (may_deref && + ada_type_match (TYPE_TARGET_TYPE (ftype), atype, 0)); case TYPE_CODE_INT: case TYPE_CODE_ENUM: case TYPE_CODE_RANGE: switch (TYPE_CODE (atype)) - { - case TYPE_CODE_INT: - case TYPE_CODE_ENUM: - case TYPE_CODE_RANGE: - return 1; - default: - return 0; - } + { + case TYPE_CODE_INT: + case TYPE_CODE_ENUM: + case TYPE_CODE_RANGE: + return 1; + default: + return 0; + } case TYPE_CODE_ARRAY: return (TYPE_CODE (atype) == TYPE_CODE_ARRAY - || ada_is_array_descriptor (atype)); + || ada_is_array_descriptor_type (atype)); case TYPE_CODE_STRUCT: - if (ada_is_array_descriptor (ftype)) - return (TYPE_CODE (atype) == TYPE_CODE_ARRAY - || ada_is_array_descriptor (atype)); + if (ada_is_array_descriptor_type (ftype)) + return (TYPE_CODE (atype) == TYPE_CODE_ARRAY + || ada_is_array_descriptor_type (atype)); else - return (TYPE_CODE (atype) == TYPE_CODE_STRUCT - && !ada_is_array_descriptor (atype)); + return (TYPE_CODE (atype) == TYPE_CODE_STRUCT + && !ada_is_array_descriptor_type (atype)); case TYPE_CODE_UNION: case TYPE_CODE_FLT: @@ -2394,7 +2829,7 @@ ada_type_match (struct type *ftype, struct type *atype, int may_deref) /* Return non-zero if the formals of FUNC "sufficiently match" the vector of actual argument types ACTUALS of size N_ACTUALS. FUNC may also be an enumeral, in which case it is treated as a 0- - argument function. */ + argument function. */ static int ada_args_match (struct symbol *func, struct value **actuals, int n_actuals) @@ -2413,12 +2848,16 @@ ada_args_match (struct symbol *func, struct value **actuals, int n_actuals) for (i = 0; i < n_actuals; i += 1) { - struct type *ftype = check_typedef (TYPE_FIELD_TYPE (func_type, i)); - struct type *atype = check_typedef (VALUE_TYPE (actuals[i])); - - if (!ada_type_match (TYPE_FIELD_TYPE (func_type, i), - VALUE_TYPE (actuals[i]), 1)) + if (actuals[i] == NULL) return 0; + else + { + struct type *ftype = check_typedef (TYPE_FIELD_TYPE (func_type, i)); + struct type *atype = check_typedef (VALUE_TYPE (actuals[i])); + + if (!ada_type_match (ftype, atype, 1)) + return 0; + } } return 1; } @@ -2436,16 +2875,14 @@ return_match (struct type *func_type, struct type *context_type) if (func_type == NULL) return 1; - /* FIXME: base_type should be declared in gdbtypes.h, implemented in valarith.c */ - /* if (TYPE_CODE (func_type) == TYPE_CODE_FUNC) - return_type = base_type (TYPE_TARGET_TYPE (func_type)); - else - return_type = base_type (func_type); */ + if (TYPE_CODE (func_type) == TYPE_CODE_FUNC) + return_type = base_type (TYPE_TARGET_TYPE (func_type)); + else + return_type = base_type (func_type); if (return_type == NULL) return 1; - /* FIXME: base_type should be declared in gdbtypes.h, implemented in valarith.c */ - /* context_type = base_type (context_type); */ + context_type = base_type (context_type); if (TYPE_CODE (return_type) == TYPE_CODE_ENUM) return context_type == NULL || return_type == context_type; @@ -2456,24 +2893,25 @@ return_match (struct type *func_type, struct type *context_type) } -/* Return the index in SYMS[0..NSYMS-1] of symbol for the +/* Returns the index in SYMS[0..NSYMS-1] that contains the symbol for the function (if any) that matches the types of the NARGS arguments in - ARGS. If CONTEXT_TYPE is non-null, and there is at least one match - that returns type CONTEXT_TYPE, then eliminate other matches. If - CONTEXT_TYPE is null, prefer a non-void-returning function. + ARGS. If CONTEXT_TYPE is non-null and there is at least one match + that returns that type, then eliminate matches that don't. If + CONTEXT_TYPE is void and there is at least one match that does not + return void, eliminate all matches that do. + Asks the user if there is more than one match remaining. Returns -1 if there is no such symbol or none is selected. NAME is used - solely for messages. May re-arrange and modify SYMS in - the process; the index returned is for the modified vector. BLOCKS - is modified in parallel to SYMS. */ + solely for messages. May re-arrange and modify SYMS in + the process; the index returned is for the modified vector. */ -int -ada_resolve_function (struct symbol *syms[], struct block *blocks[], - int nsyms, struct value **args, int nargs, - const char *name, struct type *context_type) +static int +ada_resolve_function (struct ada_symbol_info syms[], + int nsyms, struct value **args, int nargs, + const char *name, struct type *context_type) { int k; - int m; /* Number of hits */ + int m; /* Number of hits */ struct type *fallback; struct type *return_type; @@ -2487,22 +2925,20 @@ ada_resolve_function (struct symbol *syms[], struct block *blocks[], while (1) { for (k = 0; k < nsyms; k += 1) - { - struct type *type = check_typedef (SYMBOL_TYPE (syms[k])); - - if (ada_args_match (syms[k], args, nargs) - && return_match (SYMBOL_TYPE (syms[k]), return_type)) - { - syms[m] = syms[k]; - if (blocks != NULL) - blocks[m] = blocks[k]; - m += 1; - } - } + { + struct type *type = check_typedef (SYMBOL_TYPE (syms[k].sym)); + + if (ada_args_match (syms[k].sym, args, nargs) + && return_match (type, return_type)) + { + syms[m] = syms[k]; + m += 1; + } + } if (m > 0 || return_type == fallback) - break; + break; else - return_type = fallback; + return_type = fallback; } if (m == 0) @@ -2510,19 +2946,20 @@ ada_resolve_function (struct symbol *syms[], struct block *blocks[], else if (m > 1) { printf_filtered ("Multiple matches for %s\n", name); - user_select_syms (syms, blocks, m, 1); + user_select_syms (syms, m, 1); return 0; } return 0; } -/* Returns true (non-zero) iff demangled name N0 should appear before N1 */ -/* in a listing of choices during disambiguation (see sort_choices, below). */ -/* The idea is that overloadings of a subprogram name from the */ -/* same package should sort in their source order. We settle for ordering */ -/* such symbols by their trailing number (__N or $N). */ +/* Returns true (non-zero) iff decoded name N0 should appear before N1 + in a listing of choices during disambiguation (see sort_choices, below). + The idea is that overloadings of a subprogram name from the + same package should sort in their source order. We settle for ordering + such symbols by their trailing number (__N or $N). */ + static int -mangled_ordered_before (char *N0, char *N1) +encoded_ordered_before (char *N0, char *N1) { if (N1 == NULL) return 0; @@ -2532,65 +2969,59 @@ mangled_ordered_before (char *N0, char *N1) { int k0, k1; for (k0 = strlen (N0) - 1; k0 > 0 && isdigit (N0[k0]); k0 -= 1) - ; + ; for (k1 = strlen (N1) - 1; k1 > 0 && isdigit (N1[k1]); k1 -= 1) - ; + ; if ((N0[k0] == '_' || N0[k0] == '$') && N0[k0 + 1] != '\000' - && (N1[k1] == '_' || N1[k1] == '$') && N1[k1 + 1] != '\000') - { - int n0, n1; - n0 = k0; - while (N0[n0] == '_' && n0 > 0 && N0[n0 - 1] == '_') - n0 -= 1; - n1 = k1; - while (N1[n1] == '_' && n1 > 0 && N1[n1 - 1] == '_') - n1 -= 1; - if (n0 == n1 && DEPRECATED_STREQN (N0, N1, n0)) - return (atoi (N0 + k0 + 1) < atoi (N1 + k1 + 1)); - } + && (N1[k1] == '_' || N1[k1] == '$') && N1[k1 + 1] != '\000') + { + int n0, n1; + n0 = k0; + while (N0[n0] == '_' && n0 > 0 && N0[n0 - 1] == '_') + n0 -= 1; + n1 = k1; + while (N1[n1] == '_' && n1 > 0 && N1[n1 - 1] == '_') + n1 -= 1; + if (n0 == n1 && strncmp (N0, N1, n0) == 0) + return (atoi (N0 + k0 + 1) < atoi (N1 + k1 + 1)); + } return (strcmp (N0, N1) < 0); } } -/* Sort SYMS[0..NSYMS-1] to put the choices in a canonical order by their */ -/* mangled names, rearranging BLOCKS[0..NSYMS-1] according to the same */ -/* permutation. */ +/* Sort SYMS[0..NSYMS-1] to put the choices in a canonical order by the + encoded names. */ + static void -sort_choices (struct symbol *syms[], struct block *blocks[], int nsyms) +sort_choices (struct ada_symbol_info syms[], int nsyms) { - int i, j; + int i; for (i = 1; i < nsyms; i += 1) { - struct symbol *sym = syms[i]; - struct block *block = blocks[i]; + struct ada_symbol_info sym = syms[i]; int j; for (j = i - 1; j >= 0; j -= 1) - { - if (mangled_ordered_before (DEPRECATED_SYMBOL_NAME (syms[j]), - DEPRECATED_SYMBOL_NAME (sym))) - break; - syms[j + 1] = syms[j]; - blocks[j + 1] = blocks[j]; - } + { + if (encoded_ordered_before (SYMBOL_LINKAGE_NAME (syms[j].sym), + SYMBOL_LINKAGE_NAME (sym.sym))) + break; + syms[j + 1] = syms[j]; + } syms[j + 1] = sym; - blocks[j + 1] = block; } } -/* Given a list of NSYMS symbols in SYMS and corresponding blocks in */ -/* BLOCKS, select up to MAX_RESULTS>0 by asking the user (if */ -/* necessary), returning the number selected, and setting the first */ -/* elements of SYMS and BLOCKS to the selected symbols and */ -/* corresponding blocks. Error if no symbols selected. BLOCKS may */ -/* be NULL, in which case it is ignored. */ +/* Given a list of NSYMS symbols in SYMS, select up to MAX_RESULTS>0 + by asking the user (if necessary), returning the number selected, + and setting the first elements of SYMS items. Error if no symbols + selected. */ /* NOTE: Adapted from decode_line_2 in symtab.c, with which it ought - to be re-integrated one of these days. */ + to be re-integrated one of these days. */ int -user_select_syms (struct symbol *syms[], struct block *blocks[], int nsyms, - int max_results) +user_select_syms (struct ada_symbol_info *syms, int nsyms, int max_results) { int i; int *chosen = (int *) alloca (sizeof (int) * nsyms); @@ -2606,94 +3037,90 @@ user_select_syms (struct symbol *syms[], struct block *blocks[], int nsyms, if (max_results > 1) printf_unfiltered ("[1] all\n"); - sort_choices (syms, blocks, nsyms); + sort_choices (syms, nsyms); for (i = 0; i < nsyms; i += 1) { - if (syms[i] == NULL) - continue; - - if (SYMBOL_CLASS (syms[i]) == LOC_BLOCK) - { - struct symtab_and_line sal = find_function_start_sal (syms[i], 1); - printf_unfiltered ("[%d] %s at %s:%d\n", - i + first_choice, - SYMBOL_PRINT_NAME (syms[i]), - sal.symtab == NULL - ? "<no source file available>" - : sal.symtab->filename, sal.line); - continue; - } + if (syms[i].sym == NULL) + continue; + + if (SYMBOL_CLASS (syms[i].sym) == LOC_BLOCK) + { + struct symtab_and_line sal = find_function_start_sal (syms[i].sym, 1); + printf_unfiltered ("[%d] %s at %s:%d\n", + i + first_choice, + SYMBOL_PRINT_NAME (syms[i].sym), + sal.symtab == NULL + ? "<no source file available>" + : sal.symtab->filename, sal.line); + continue; + } else - { - int is_enumeral = - (SYMBOL_CLASS (syms[i]) == LOC_CONST - && SYMBOL_TYPE (syms[i]) != NULL - && TYPE_CODE (SYMBOL_TYPE (syms[i])) == TYPE_CODE_ENUM); - struct symtab *symtab = symtab_for_sym (syms[i]); - - if (SYMBOL_LINE (syms[i]) != 0 && symtab != NULL) - printf_unfiltered ("[%d] %s at %s:%d\n", - i + first_choice, - SYMBOL_PRINT_NAME (syms[i]), - symtab->filename, SYMBOL_LINE (syms[i])); - else if (is_enumeral && TYPE_NAME (SYMBOL_TYPE (syms[i])) != NULL) - { - printf_unfiltered ("[%d] ", i + first_choice); - ada_print_type (SYMBOL_TYPE (syms[i]), NULL, gdb_stdout, -1, 0); - printf_unfiltered ("'(%s) (enumeral)\n", - SYMBOL_PRINT_NAME (syms[i])); - } - else if (symtab != NULL) - printf_unfiltered (is_enumeral - ? "[%d] %s in %s (enumeral)\n" - : "[%d] %s at %s:?\n", - i + first_choice, - SYMBOL_PRINT_NAME (syms[i]), - symtab->filename); - else - printf_unfiltered (is_enumeral - ? "[%d] %s (enumeral)\n" - : "[%d] %s at ?\n", - i + first_choice, - SYMBOL_PRINT_NAME (syms[i])); - } + { + int is_enumeral = + (SYMBOL_CLASS (syms[i].sym) == LOC_CONST + && SYMBOL_TYPE (syms[i].sym) != NULL + && TYPE_CODE (SYMBOL_TYPE (syms[i].sym)) == TYPE_CODE_ENUM); + struct symtab *symtab = symtab_for_sym (syms[i].sym); + + if (SYMBOL_LINE (syms[i].sym) != 0 && symtab != NULL) + printf_unfiltered ("[%d] %s at %s:%d\n", + i + first_choice, + SYMBOL_PRINT_NAME (syms[i].sym), + symtab->filename, SYMBOL_LINE (syms[i].sym)); + else if (is_enumeral && TYPE_NAME (SYMBOL_TYPE (syms[i].sym)) != NULL) + { + printf_unfiltered ("[%d] ", i + first_choice); + ada_print_type (SYMBOL_TYPE (syms[i].sym), NULL, + gdb_stdout, -1, 0); + printf_unfiltered ("'(%s) (enumeral)\n", + SYMBOL_PRINT_NAME (syms[i].sym)); + } + else if (symtab != NULL) + printf_unfiltered (is_enumeral + ? "[%d] %s in %s (enumeral)\n" + : "[%d] %s at %s:?\n", + i + first_choice, + SYMBOL_PRINT_NAME (syms[i].sym), + symtab->filename); + else + printf_unfiltered (is_enumeral + ? "[%d] %s (enumeral)\n" + : "[%d] %s at ?\n", + i + first_choice, + SYMBOL_PRINT_NAME (syms[i].sym)); + } } n_chosen = get_selections (chosen, nsyms, max_results, max_results > 1, - "overload-choice"); + "overload-choice"); for (i = 0; i < n_chosen; i += 1) - { - syms[i] = syms[chosen[i]]; - if (blocks != NULL) - blocks[i] = blocks[chosen[i]]; - } + syms[i] = syms[chosen[i]]; return n_chosen; } /* Read and validate a set of numeric choices from the user in the - range 0 .. N_CHOICES-1. Place the results in increasing + range 0 .. N_CHOICES-1. Place the results in increasing order in CHOICES[0 .. N-1], and return N. The user types choices as a sequence of numbers on one line separated by blanks, encoding them as follows: - + A choice of 0 means to cancel the selection, throwing an error. + + A choice of 0 means to cancel the selection, throwing an error. + If IS_ALL_CHOICE, a choice of 1 selects the entire set 0 .. N_CHOICES-1. + The user chooses k by typing k+IS_ALL_CHOICE+1. - The user is not allowed to choose more than MAX_RESULTS values. + The user is not allowed to choose more than MAX_RESULTS values. ANNOTATION_SUFFIX, if present, is used to annotate the input - prompts (for use with the -f switch). */ + prompts (for use with the -f switch). */ int get_selections (int *choices, int n_choices, int max_results, - int is_all_choice, char *annotation_suffix) + int is_all_choice, char *annotation_suffix) { - int i; char *args; const char *prompt; int n_chosen; @@ -2712,51 +3139,51 @@ get_selections (int *choices, int n_choices, int max_results, error_no_arg ("one or more choice numbers"); n_chosen = 0; - - /* Set choices[0 .. n_chosen-1] to the users' choices in ascending - order, as given in args. Choices are validated. */ + + /* Set choices[0 .. n_chosen-1] to the users' choices in ascending + order, as given in args. Choices are validated. */ while (1) { char *args2; int choice, j; while (isspace (*args)) - args += 1; + args += 1; if (*args == '\0' && n_chosen == 0) - error_no_arg ("one or more choice numbers"); + error_no_arg ("one or more choice numbers"); else if (*args == '\0') - break; + break; choice = strtol (args, &args2, 10); if (args == args2 || choice < 0 - || choice > n_choices + first_choice - 1) - error ("Argument must be choice number"); + || choice > n_choices + first_choice - 1) + error ("Argument must be choice number"); args = args2; if (choice == 0) - error ("cancelled"); + error ("cancelled"); if (choice < first_choice) - { - n_chosen = n_choices; - for (j = 0; j < n_choices; j += 1) - choices[j] = j; - break; - } + { + n_chosen = n_choices; + for (j = 0; j < n_choices; j += 1) + choices[j] = j; + break; + } choice -= first_choice; for (j = n_chosen - 1; j >= 0 && choice < choices[j]; j -= 1) - { - } + { + } if (j < 0 || choice != choices[j]) - { - int k; - for (k = n_chosen - 1; k > j; k -= 1) - choices[k + 1] = choices[k]; - choices[j + 1] = choice; - n_chosen += 1; - } + { + int k; + for (k = n_chosen - 1; k > j; k -= 1) + choices[k + 1] = choices[k]; + choices[j + 1] = choice; + n_chosen += 1; + } } if (n_chosen > max_results) @@ -2765,27 +3192,27 @@ get_selections (int *choices, int n_choices, int max_results, return n_chosen; } -/* Replace the operator of length OPLEN at position PC in *EXPP with a call */ -/* on the function identified by SYM and BLOCK, and taking NARGS */ -/* arguments. Update *EXPP as needed to hold more space. */ +/* Replace the operator of length OPLEN at position PC in *EXPP with a call + on the function identified by SYM and BLOCK, and taking NARGS + arguments. Update *EXPP as needed to hold more space. */ static void replace_operator_with_call (struct expression **expp, int pc, int nargs, - int oplen, struct symbol *sym, - struct block *block) + int oplen, struct symbol *sym, + struct block *block) { /* A new expression, with 6 more elements (3 for funcall, 4 for function - symbol, -oplen for operator being replaced). */ + symbol, -oplen for operator being replaced). */ struct expression *newexp = (struct expression *) xmalloc (sizeof (struct expression) - + EXP_ELEM_TO_BYTES ((*expp)->nelts + 7 - oplen)); + + EXP_ELEM_TO_BYTES ((*expp)->nelts + 7 - oplen)); struct expression *exp = *expp; newexp->nelts = exp->nelts + 7 - oplen; newexp->language_defn = exp->language_defn; memcpy (newexp->elts, exp->elts, EXP_ELEM_TO_BYTES (pc)); memcpy (newexp->elts + pc + 7, exp->elts + pc + oplen, - EXP_ELEM_TO_BYTES (exp->nelts - pc - oplen)); + EXP_ELEM_TO_BYTES (exp->nelts - pc - oplen)); newexp->elts[pc].opcode = newexp->elts[pc + 2].opcode = OP_FUNCALL; newexp->elts[pc + 1].longconst = (LONGEST) nargs; @@ -2800,8 +3227,8 @@ replace_operator_with_call (struct expression **expp, int pc, int nargs, /* Type-class predicates */ -/* True iff TYPE is numeric (i.e., an INT, RANGE (of numeric type), or */ -/* FLOAT.) */ +/* True iff TYPE is numeric (i.e., an INT, RANGE (of numeric type), + or FLOAT). */ static int numeric_type_p (struct type *type) @@ -2811,20 +3238,20 @@ numeric_type_p (struct type *type) else { switch (TYPE_CODE (type)) - { - case TYPE_CODE_INT: - case TYPE_CODE_FLT: - return 1; - case TYPE_CODE_RANGE: - return (type == TYPE_TARGET_TYPE (type) - || numeric_type_p (TYPE_TARGET_TYPE (type))); - default: - return 0; - } + { + case TYPE_CODE_INT: + case TYPE_CODE_FLT: + return 1; + case TYPE_CODE_RANGE: + return (type == TYPE_TARGET_TYPE (type) + || numeric_type_p (TYPE_TARGET_TYPE (type))); + default: + return 0; + } } } -/* True iff TYPE is integral (an INT or RANGE of INTs). */ +/* True iff TYPE is integral (an INT or RANGE of INTs). */ static int integer_type_p (struct type *type) @@ -2834,19 +3261,19 @@ integer_type_p (struct type *type) else { switch (TYPE_CODE (type)) - { - case TYPE_CODE_INT: - return 1; - case TYPE_CODE_RANGE: - return (type == TYPE_TARGET_TYPE (type) - || integer_type_p (TYPE_TARGET_TYPE (type))); - default: - return 0; - } + { + case TYPE_CODE_INT: + return 1; + case TYPE_CODE_RANGE: + return (type == TYPE_TARGET_TYPE (type) + || integer_type_p (TYPE_TARGET_TYPE (type))); + default: + return 0; + } } } -/* True iff TYPE is scalar (INT, RANGE, FLOAT, ENUM). */ +/* True iff TYPE is scalar (INT, RANGE, FLOAT, ENUM). */ static int scalar_type_p (struct type *type) @@ -2856,19 +3283,19 @@ scalar_type_p (struct type *type) else { switch (TYPE_CODE (type)) - { - case TYPE_CODE_INT: - case TYPE_CODE_RANGE: - case TYPE_CODE_ENUM: - case TYPE_CODE_FLT: - return 1; - default: - return 0; - } + { + case TYPE_CODE_INT: + case TYPE_CODE_RANGE: + case TYPE_CODE_ENUM: + case TYPE_CODE_FLT: + return 1; + default: + return 0; + } } } -/* True iff TYPE is discrete (INT, RANGE, ENUM). */ +/* True iff TYPE is discrete (INT, RANGE, ENUM). */ static int discrete_type_p (struct type *type) @@ -2878,28 +3305,32 @@ discrete_type_p (struct type *type) else { switch (TYPE_CODE (type)) - { - case TYPE_CODE_INT: - case TYPE_CODE_RANGE: - case TYPE_CODE_ENUM: - return 1; - default: - return 0; - } + { + case TYPE_CODE_INT: + case TYPE_CODE_RANGE: + case TYPE_CODE_ENUM: + return 1; + default: + return 0; + } } } -/* Returns non-zero if OP with operatands in the vector ARGS could be - a user-defined function. Errs on the side of pre-defined operators - (i.e., result 0). */ +/* Returns non-zero if OP with operands in the vector ARGS could be + a user-defined function. Errs on the side of pre-defined operators + (i.e., result 0). */ static int possible_user_operator_p (enum exp_opcode op, struct value *args[]) { - struct type *type0 = check_typedef (VALUE_TYPE (args[0])); + struct type *type0 = + (args[0] == NULL) ? NULL : check_typedef (VALUE_TYPE (args[0])); struct type *type1 = (args[1] == NULL) ? NULL : check_typedef (VALUE_TYPE (args[1])); + if (type0 == NULL) + return 0; + switch (op) { default: @@ -2928,12 +3359,12 @@ possible_user_operator_p (enum exp_opcode op, struct value *args[]) case BINOP_CONCAT: return ((TYPE_CODE (type0) != TYPE_CODE_ARRAY && - (TYPE_CODE (type0) != TYPE_CODE_PTR || - TYPE_CODE (TYPE_TARGET_TYPE (type0)) - != TYPE_CODE_ARRAY)) - || (TYPE_CODE (type1) != TYPE_CODE_ARRAY && - (TYPE_CODE (type1) != TYPE_CODE_PTR || - TYPE_CODE (TYPE_TARGET_TYPE (type1)) != TYPE_CODE_ARRAY))); + (TYPE_CODE (type0) != TYPE_CODE_PTR || + TYPE_CODE (TYPE_TARGET_TYPE (type0)) + != TYPE_CODE_ARRAY)) + || (TYPE_CODE (type1) != TYPE_CODE_ARRAY && + (TYPE_CODE (type1) != TYPE_CODE_PTR || + TYPE_CODE (TYPE_TARGET_TYPE (type1)) != TYPE_CODE_ARRAY))); case BINOP_EXP: return (!(numeric_type_p (type0) && integer_type_p (type1))); @@ -2947,16 +3378,17 @@ possible_user_operator_p (enum exp_opcode op, struct value *args[]) } } - /* Renaming */ + /* Renaming */ -/** NOTE: In the following, we assume that a renaming type's name may - * have an ___XD suffix. It would be nice if this went away at some - * point. */ +/* NOTE: In the following, we assume that a renaming type's name may + have an ___XD suffix. It would be nice if this went away at some + point. */ /* If TYPE encodes a renaming, returns the renaming suffix, which - * is XR for an object renaming, XRP for a procedure renaming, XRE for - * an exception renaming, and XRS for a subprogram renaming. Returns - * NULL if NAME encodes none of these. */ + is XR for an object renaming, XRP for a procedure renaming, XRE for + an exception renaming, and XRS for a subprogram renaming. Returns + NULL if NAME encodes none of these. */ + const char * ada_renaming_type (struct type *type) { @@ -2965,16 +3397,17 @@ ada_renaming_type (struct type *type) const char *name = type_name_no_tag (type); const char *suffix = (name == NULL) ? NULL : strstr (name, "___XR"); if (suffix == NULL - || (suffix[5] != '\000' && strchr ("PES_", suffix[5]) == NULL)) - return NULL; + || (suffix[5] != '\000' && strchr ("PES_", suffix[5]) == NULL)) + return NULL; else - return suffix + 3; + return suffix + 3; } else return NULL; } -/* Return non-zero iff SYM encodes an object renaming. */ +/* Return non-zero iff SYM encodes an object renaming. */ + int ada_is_object_renaming (struct symbol *sym) { @@ -2984,9 +3417,10 @@ ada_is_object_renaming (struct symbol *sym) } /* Assuming that SYM encodes a non-object renaming, returns the original - * name of the renamed entity. The name is good until the end of - * parsing. */ -const char * + name of the renamed entity. The name is good until the end of + parsing. */ + +char * ada_simple_renamed_entity (struct symbol *sym) { struct type *type; @@ -3004,32 +3438,34 @@ ada_simple_renamed_entity (struct symbol *sym) error ("Improperly encoded renaming."); result = xmalloc (len + 1); - /* FIXME: add_name_string_cleanup should be defined in parse.c */ - /* add_name_string_cleanup (result); */ strncpy (result, raw_name, len); result[len] = '\000'; return result; } - /* Evaluation: Function Calls */ + /* Evaluation: Function Calls */ -/* Copy VAL onto the stack, using and updating *SP as the stack - pointer. Return VAL as an lvalue. */ +/* Return an lvalue containing the value VAL. This is the identity on + lvalues, and otherwise has the side-effect of pushing a copy of VAL + on the stack, using and updating *SP as the stack pointer, and + returning an lvalue whose VALUE_ADDRESS points to the copy. */ static struct value * -place_on_stack (struct value *val, CORE_ADDR *sp) +ensure_lval (struct value *val, CORE_ADDR *sp) { CORE_ADDR old_sp = *sp; -#ifdef DEPRECATED_STACK_ALIGN - *sp = push_bytes (*sp, VALUE_CONTENTS_RAW (val), - DEPRECATED_STACK_ALIGN (TYPE_LENGTH - (check_typedef (VALUE_TYPE (val))))); -#else - *sp = push_bytes (*sp, VALUE_CONTENTS_RAW (val), - TYPE_LENGTH (check_typedef (VALUE_TYPE (val)))); -#endif + if (VALUE_LVAL (val)) + return val; + + if (DEPRECATED_STACK_ALIGN_P ()) + *sp = push_bytes (*sp, VALUE_CONTENTS_RAW (val), + DEPRECATED_STACK_ALIGN + (TYPE_LENGTH (check_typedef (VALUE_TYPE (val))))); + else + *sp = push_bytes (*sp, VALUE_CONTENTS_RAW (val), + TYPE_LENGTH (check_typedef (VALUE_TYPE (val)))); VALUE_LVAL (val) = lval_memory; if (INNER_THAN (1, 2)) @@ -3043,11 +3479,11 @@ place_on_stack (struct value *val, CORE_ADDR *sp) /* Return the value ACTUAL, converted to be an appropriate value for a formal of type FORMAL_TYPE. Use *SP as a stack pointer for allocating any necessary descriptors (fat pointers), or copies of - values not residing in memory, updating it as needed. */ + values not residing in memory, updating it as needed. */ static struct value * convert_actual (struct value *actual, struct type *formal_type0, - CORE_ADDR *sp) + CORE_ADDR *sp) { struct type *actual_type = check_typedef (VALUE_TYPE (actual)); struct type *formal_type = check_typedef (formal_type0); @@ -3058,28 +3494,28 @@ convert_actual (struct value *actual, struct type *formal_type0, TYPE_CODE (actual_type) == TYPE_CODE_PTR ? check_typedef (TYPE_TARGET_TYPE (actual_type)) : actual_type; - if (ada_is_array_descriptor (formal_target) + if (ada_is_array_descriptor_type (formal_target) && TYPE_CODE (actual_target) == TYPE_CODE_ARRAY) return make_array_descriptor (formal_type, actual, sp); else if (TYPE_CODE (formal_type) == TYPE_CODE_PTR) { if (TYPE_CODE (formal_target) == TYPE_CODE_ARRAY - && ada_is_array_descriptor (actual_target)) - return desc_data (actual); + && ada_is_array_descriptor_type (actual_target)) + return desc_data (actual); else if (TYPE_CODE (actual_type) != TYPE_CODE_PTR) - { - if (VALUE_LVAL (actual) != lval_memory) - { - struct value *val; - actual_type = check_typedef (VALUE_TYPE (actual)); - val = allocate_value (actual_type); - memcpy ((char *) VALUE_CONTENTS_RAW (val), - (char *) VALUE_CONTENTS (actual), - TYPE_LENGTH (actual_type)); - actual = place_on_stack (val, sp); - } - return value_addr (actual); - } + { + if (VALUE_LVAL (actual) != lval_memory) + { + struct value *val; + actual_type = check_typedef (VALUE_TYPE (actual)); + val = allocate_value (actual_type); + memcpy ((char *) VALUE_CONTENTS_RAW (val), + (char *) VALUE_CONTENTS (actual), + TYPE_LENGTH (actual_type)); + actual = ensure_lval (val, sp); + } + return value_addr (actual); + } } else if (TYPE_CODE (actual_type) == TYPE_CODE_PTR) return ada_value_ind (actual); @@ -3088,11 +3524,11 @@ convert_actual (struct value *actual, struct type *formal_type0, } -/* Push a descriptor of type TYPE for array value ARR on the stack at - *SP, updating *SP to reflect the new descriptor. Return either +/* Push a descriptor of type TYPE for array value ARR on the stack at + *SP, updating *SP to reflect the new descriptor. Return either an lvalue representing the new descriptor, or (if TYPE is a pointer- - to-descriptor type rather than a descriptor type), a struct value* - representing a pointer to this descriptor. */ + to-descriptor type rather than a descriptor type), a struct value * + representing a pointer to this descriptor. */ static struct value * make_array_descriptor (struct type *type, struct value *arr, CORE_ADDR *sp) @@ -3101,33 +3537,33 @@ make_array_descriptor (struct type *type, struct value *arr, CORE_ADDR *sp) struct type *desc_type = desc_base_type (type); struct value *descriptor = allocate_value (desc_type); struct value *bounds = allocate_value (bounds_type); - CORE_ADDR bounds_addr; int i; for (i = ada_array_arity (check_typedef (VALUE_TYPE (arr))); i > 0; i -= 1) { modify_general_field (VALUE_CONTENTS (bounds), - value_as_long (ada_array_bound (arr, i, 0)), - desc_bound_bitpos (bounds_type, i, 0), - desc_bound_bitsize (bounds_type, i, 0)); + value_as_long (ada_array_bound (arr, i, 0)), + desc_bound_bitpos (bounds_type, i, 0), + desc_bound_bitsize (bounds_type, i, 0)); modify_general_field (VALUE_CONTENTS (bounds), - value_as_long (ada_array_bound (arr, i, 1)), - desc_bound_bitpos (bounds_type, i, 1), - desc_bound_bitsize (bounds_type, i, 1)); + value_as_long (ada_array_bound (arr, i, 1)), + desc_bound_bitpos (bounds_type, i, 1), + desc_bound_bitsize (bounds_type, i, 1)); } - bounds = place_on_stack (bounds, sp); + bounds = ensure_lval (bounds, sp); modify_general_field (VALUE_CONTENTS (descriptor), - arr, + VALUE_ADDRESS (ensure_lval (arr, sp)), fat_pntr_data_bitpos (desc_type), fat_pntr_data_bitsize (desc_type)); + modify_general_field (VALUE_CONTENTS (descriptor), - VALUE_ADDRESS (bounds), - fat_pntr_bounds_bitpos (desc_type), - fat_pntr_bounds_bitsize (desc_type)); + VALUE_ADDRESS (bounds), + fat_pntr_bounds_bitpos (desc_type), + fat_pntr_bounds_bitsize (desc_type)); - descriptor = place_on_stack (descriptor, sp); + descriptor = ensure_lval (descriptor, sp); if (TYPE_CODE (type) == TYPE_CODE_PTR) return value_addr (descriptor); @@ -3136,17 +3572,17 @@ make_array_descriptor (struct type *type, struct value *arr, CORE_ADDR *sp) } -/* Assuming a dummy frame has been established on the target, perform any +/* Assuming a dummy frame has been established on the target, perform any conversions needed for calling function FUNC on the NARGS actual - parameters in ARGS, other than standard C conversions. Does + parameters in ARGS, other than standard C conversions. Does nothing if FUNC does not have Ada-style prototype data, or if NARGS - does not match the number of arguments expected. Use *SP as a + does not match the number of arguments expected. Use *SP as a stack pointer for additional data that must be pushed, updating its - value as needed. */ + value as needed. */ void ada_convert_actuals (struct value *func, int nargs, struct value *args[], - CORE_ADDR *sp) + CORE_ADDR *sp) { int i; @@ -3159,52 +3595,137 @@ ada_convert_actuals (struct value *func, int nargs, struct value *args[], convert_actual (args[i], TYPE_FIELD_TYPE (VALUE_TYPE (func), i), sp); } + /* Experimental Symbol Cache Module */ - /* Symbol Lookup */ +/* This section implements a simple, fixed-sized hash table for those + Ada-mode symbols that get looked up in the course of executing the user's + commands. The size is fixed on the grounds that there are not + likely to be all that many symbols looked up during any given + session, regardless of the size of the symbol table. If we decide + to go to a resizable table, let's just use the stuff from libiberty + instead. */ +#define HASH_SIZE 1009 -/* The vectors of symbols and blocks ultimately returned from */ -/* ada_lookup_symbol_list. */ +struct cache_entry { + const char *name; + domain_enum namespace; + struct symbol *sym; + struct symtab *symtab; + struct block *block; + struct cache_entry *next; +}; -/* Current size of defn_symbols and defn_blocks */ -static size_t defn_vector_size = 0; +static struct obstack cache_space; -/* Current number of symbols found. */ -static int ndefns = 0; +static struct cache_entry *cache[HASH_SIZE]; -static struct symbol **defn_symbols = NULL; -static struct block **defn_blocks = NULL; +/* Clear all entries from the symbol cache. */ -/* Return the result of a standard (literal, C-like) lookup of NAME in - * given DOMAIN. */ +void +clear_ada_sym_cache (void) +{ + obstack_free (&cache_space, NULL); + obstack_init (&cache_space); + memset (cache, '\000', sizeof (cache)); +} + +static struct cache_entry ** +find_entry (const char *name, domain_enum namespace) +{ + int h = msymbol_hash (name) % HASH_SIZE; + struct cache_entry **e; + for (e = &cache[h]; *e != NULL; e = &(*e)->next) + { + if (namespace == (*e)->namespace && strcmp (name, (*e)->name) == 0) + return e; + } + return NULL; +} + +/* Return (in SYM) the last cached definition for global or static symbol NAME + in namespace DOMAIN. Returns 1 if entry found, 0 otherwise. + If SYMTAB is non-NULL, store the symbol + table in which the symbol was found there, or NULL if not found. + *BLOCK is set to the block in which NAME is found. */ + +static int +lookup_cached_symbol (const char *name, domain_enum namespace, + struct symbol **sym, struct block **block, + struct symtab **symtab) +{ + struct cache_entry **e = find_entry (name, namespace); + if (e == NULL) + return 0; + if (sym != NULL) + *sym = (*e)->sym; + if (block != NULL) + *block = (*e)->block; + if (symtab != NULL) + *symtab = (*e)->symtab; + return 1; +} + +/* Set the cached definition of NAME in DOMAIN to SYM in block + BLOCK and symbol table SYMTAB. */ + +static void +cache_symbol (const char *name, domain_enum namespace, struct symbol *sym, + struct block *block, struct symtab *symtab) +{ + int h = msymbol_hash (name) % HASH_SIZE; + char *copy; + struct cache_entry *e = + (struct cache_entry *) obstack_alloc(&cache_space, sizeof (*e)); + e->next = cache[h]; + cache[h] = e; + e->name = copy = obstack_alloc (&cache_space, strlen (name) + 1); + strcpy (copy, name); + e->sym = sym; + e->namespace = namespace; + e->symtab = symtab; + e->block = block; +} + + /* Symbol Lookup */ + +/* Return the result of a standard (literal, C-like) lookup of NAME in + given DOMAIN, visible from lexical block BLOCK. */ static struct symbol * -standard_lookup (const char *name, domain_enum domain) +standard_lookup (const char *name, const struct block *block, + domain_enum domain) { struct symbol *sym; - sym = lookup_symbol (name, (struct block *) NULL, domain, 0, NULL); + struct symtab *symtab; + + if (lookup_cached_symbol (name, domain, &sym, NULL, NULL)) + return sym; + sym = lookup_symbol_in_language (name, block, domain, language_c, 0, &symtab); + cache_symbol (name, domain, sym, block_found, symtab); return sym; } -/* Non-zero iff there is at least one non-function/non-enumeral symbol */ -/* in SYMS[0..N-1]. We treat enumerals as functions, since they */ -/* contend in overloading in the same way. */ +/* Non-zero iff there is at least one non-function/non-enumeral symbol + in the symbol fields of SYMS[0..N-1]. We treat enumerals as functions, + since they contend in overloading in the same way. */ static int -is_nonfunction (struct symbol *syms[], int n) +is_nonfunction (struct ada_symbol_info syms[], int n) { int i; for (i = 0; i < n; i += 1) - if (TYPE_CODE (SYMBOL_TYPE (syms[i])) != TYPE_CODE_FUNC - && TYPE_CODE (SYMBOL_TYPE (syms[i])) != TYPE_CODE_ENUM) + if (TYPE_CODE (SYMBOL_TYPE (syms[i].sym)) != TYPE_CODE_FUNC + && (TYPE_CODE (SYMBOL_TYPE (syms[i].sym)) != TYPE_CODE_ENUM + || SYMBOL_CLASS (syms[i].sym) != LOC_CONST)) return 1; return 0; } /* If true (non-zero), then TYPE0 and TYPE1 represent equivalent - struct types. Otherwise, they may not. */ + struct types. Otherwise, they may not. */ static int equiv_types (struct type *type0, struct type *type1) @@ -3217,14 +3738,14 @@ equiv_types (struct type *type0, struct type *type1) if ((TYPE_CODE (type0) == TYPE_CODE_STRUCT || TYPE_CODE (type0) == TYPE_CODE_ENUM) && ada_type_name (type0) != NULL && ada_type_name (type1) != NULL - && DEPRECATED_STREQ (ada_type_name (type0), ada_type_name (type1))) + && strcmp (ada_type_name (type0), ada_type_name (type1)) == 0) return 1; return 0; } /* True iff SYM0 represents the same entity as SYM1, or one that is - no more defined than that of SYM1. */ + no more defined than that of SYM1. */ static int lesseq_defined_than (struct symbol *sym0, struct symbol *sym1) @@ -3241,65 +3762,379 @@ lesseq_defined_than (struct symbol *sym0, struct symbol *sym1) return 1; case LOC_TYPEDEF: { - struct type *type0 = SYMBOL_TYPE (sym0); - struct type *type1 = SYMBOL_TYPE (sym1); - char *name0 = DEPRECATED_SYMBOL_NAME (sym0); - char *name1 = DEPRECATED_SYMBOL_NAME (sym1); - int len0 = strlen (name0); - return - TYPE_CODE (type0) == TYPE_CODE (type1) - && (equiv_types (type0, type1) - || (len0 < strlen (name1) && DEPRECATED_STREQN (name0, name1, len0) - && DEPRECATED_STREQN (name1 + len0, "___XV", 5))); + struct type *type0 = SYMBOL_TYPE (sym0); + struct type *type1 = SYMBOL_TYPE (sym1); + char *name0 = SYMBOL_LINKAGE_NAME (sym0); + char *name1 = SYMBOL_LINKAGE_NAME (sym1); + int len0 = strlen (name0); + return + TYPE_CODE (type0) == TYPE_CODE (type1) + && (equiv_types (type0, type1) + || (len0 < strlen (name1) && strncmp (name0, name1, len0) == 0 + && strncmp (name1 + len0, "___XV", 5) == 0)); } case LOC_CONST: return SYMBOL_VALUE (sym0) == SYMBOL_VALUE (sym1) - && equiv_types (SYMBOL_TYPE (sym0), SYMBOL_TYPE (sym1)); + && equiv_types (SYMBOL_TYPE (sym0), SYMBOL_TYPE (sym1)); default: return 0; } } -/* Append SYM to the end of defn_symbols, and BLOCK to the end of - defn_blocks, updating ndefns, and expanding defn_symbols and - defn_blocks as needed. Do not include SYM if it is a duplicate. */ +/* Append (SYM,BLOCK,SYMTAB) to the end of the array of struct ada_symbol_info + records in OBSTACKP. Do nothing if SYM is a duplicate. */ static void -add_defn_to_vec (struct symbol *sym, struct block *block) +add_defn_to_vec (struct obstack *obstackp, + struct symbol *sym, + struct block *block, + struct symtab *symtab) { int i; size_t tmp; + struct ada_symbol_info *prevDefns = defns_collected (obstackp, 0); if (SYMBOL_TYPE (sym) != NULL) CHECK_TYPEDEF (SYMBOL_TYPE (sym)); - for (i = 0; i < ndefns; i += 1) + for (i = num_defns_collected (obstackp) - 1; i >= 0; i -= 1) + { + if (lesseq_defined_than (sym, prevDefns[i].sym)) + return; + else if (lesseq_defined_than (prevDefns[i].sym, sym)) + { + prevDefns[i].sym = sym; + prevDefns[i].block = block; + prevDefns[i].symtab = symtab; + return; + } + } + + { + struct ada_symbol_info info; + + info.sym = sym; + info.block = block; + info.symtab = symtab; + obstack_grow (obstackp, &info, sizeof (struct ada_symbol_info)); + } +} + +/* Number of ada_symbol_info structures currently collected in + current vector in *OBSTACKP. */ + +static int +num_defns_collected (struct obstack *obstackp) +{ + return obstack_object_size (obstackp) / sizeof (struct ada_symbol_info); +} + +/* Vector of ada_symbol_info structures currently collected in current + vector in *OBSTACKP. If FINISH, close off the vector and return + its final address. */ + +static struct ada_symbol_info * +defns_collected (struct obstack *obstackp, int finish) +{ + if (finish) + return obstack_finish (obstackp); + else + return (struct ada_symbol_info *) obstack_base (obstackp); +} + +/* If SYM_NAME is a completion candidate for TEXT, return this symbol + name in a form that's appropriate for the completion. The result + does not need to be deallocated, but is only good until the next call. + + TEXT_LEN is equal to the length of TEXT. + Perform a wild match if WILD_MATCH is set. + ENCODED should be set if TEXT represents the start of a symbol name + in its encoded form. */ + +static const char * +symbol_completion_match (const char *sym_name, + const char *text, int text_len, + int wild_match, int encoded) +{ + char *result; + const int verbatim_match = (text[0] == '<'); + int match = 0; + + if (verbatim_match) { - if (lesseq_defined_than (sym, defn_symbols[i])) - return; - else if (lesseq_defined_than (defn_symbols[i], sym)) + /* Strip the leading angle bracket. */ + text = text + 1; + text_len--; + } + + /* First, test against the fully qualified name of the symbol. */ + + if (strncmp (sym_name, text, text_len) == 0) + match = 1; + + if (match && !encoded) + { + /* One needed check before declaring a positive match is to verify + that iff we are doing a verbatim match, the decoded version + of the symbol name starts with '<'. Otherwise, this symbol name + is not a suitable completion. */ + const char *sym_name_copy = sym_name; + int has_angle_bracket; + + sym_name = ada_decode (sym_name); + has_angle_bracket = (sym_name [0] == '<'); + match = (has_angle_bracket == verbatim_match); + sym_name = sym_name_copy; + } + + if (match && !verbatim_match) + { + /* When doing non-verbatim match, another check that needs to + be done is to verify that the potentially matching symbol name + does not include capital letters, because the ada-mode would + not be able to understand these symbol names without the + angle bracket notation. */ + const char *tmp; + + for (tmp = sym_name; *tmp != '\0' && !isupper (*tmp); tmp++); + if (*tmp != '\0') + match = 0; + } + + /* Second: Try wild matching... */ + + if (!match && wild_match) + { + /* Since we are doing wild matching, this means that TEXT + may represent an unqualified symbol name. We therefore must + also compare TEXT against the unqualified name of the symbol. */ + sym_name = ada_unqualified_name (ada_decode (sym_name)); + + if (strncmp (sym_name, text, text_len) == 0) + match = 1; + } + + /* Finally: If we found a mach, prepare the result to return. */ + + if (!match) + return NULL; + + if (verbatim_match) + sym_name = add_angle_brackets (sym_name); + + if (!encoded) + sym_name = ada_decode (sym_name); + + return sym_name; +} + +/* A companion function to ada_make_symbol_completion_list(). + Check if SYM_NAME represents a symbol which name would be suitable + to complete TEXT (TEXT_LEN is the length of TEXT), in which case + it is appended at the end of the given string vector SV. + + ORIG_TEXT is the string original string from the user command + that needs to be completed. WORD is the entire command on which + completion should be performed. These two parameters are used to + determine which part of the symbol name should be added to the + completion vector. + if WILD_MATCH is set, then wild matching is performed. + ENCODED should be set if TEXT represents a symbol name in its + encoded formed (in which case the completion should also be + encoded). */ + +static void +symbol_completion_add (struct string_vector *sv, + const char *sym_name, + const char *text, int text_len, + const char *orig_text, const char *word, + int wild_match, int encoded) +{ + const char *match = symbol_completion_match (sym_name, text, text_len, + wild_match, encoded); + char *completion; + + if (match == NULL) + return; + + /* We found a match, so add the appropriate completion to the given + string vector. */ + + if (word == orig_text) + { + completion = xmalloc (strlen (match) + 5); + strcpy (completion, match); + } + else if (word > orig_text) + { + /* Return some portion of sym_name. */ + completion = xmalloc (strlen (match) + 5); + strcpy (completion, match + (word - orig_text)); + } + else + { + /* Return some of ORIG_TEXT plus sym_name. */ + completion = xmalloc (strlen (match) + (orig_text - word) + 5); + strncpy (completion, word, orig_text - word); + completion[orig_text - word] = '\0'; + strcat (completion, match); + } + + string_vector_append (sv, completion); +} + +/* Return a list of possible symbol names completing TEXT0. The list + is NULL terminated. WORD is the entire command on which completion + is made. */ + +char ** +ada_make_symbol_completion_list (const char *text0, const char *word) +{ + /* Note: This function is almost a copy of make_symbol_completion_list(), + except it has been adapted for Ada. It is somewhat of a shame to + duplicate so much code, but we don't really have the infrastructure + yet to develop a language-aware version of he symbol completer... */ + char *text; + int text_len; + int wild_match; + int encoded; + struct string_vector result = xnew_string_vector (128); + struct symbol *sym; + struct symtab *s; + struct partial_symtab *ps; + struct minimal_symbol *msymbol; + struct objfile *objfile; + struct block *b, *surrounding_static_block = 0; + int i; + struct dict_iterator iter; + + if (text0[0] == '<') + { + text = xstrdup (text0); + make_cleanup (xfree, text); + text_len = strlen (text); + wild_match = 0; + encoded = 1; + } + else + { + text = xstrdup (ada_encode (text0)); + make_cleanup (xfree, text); + text_len = strlen (text); + for (i = 0; i < text_len; i++) + text[i] = tolower (text[i]); + + /* FIXME: brobecker/2003-09-17: When we get rid of ADA_RETAIN_DOTS, + we can restrict the wild_match check to searching "__" only. */ + wild_match = (strstr (text0, "__") == NULL + && strchr (text0, '.') == NULL); + encoded = (strstr (text0, "__") != NULL); + } + + /* First, look at the partial symtab symbols. */ + ALL_PSYMTABS (objfile, ps) + { + struct partial_symbol **psym; + + /* If the psymtab's been read in we'll get it when we search + through the blockvector. */ + if (ps->readin) + continue; + + for (psym = objfile->global_psymbols.list + ps->globals_offset; + psym < (objfile->global_psymbols.list + ps->globals_offset + + ps->n_global_syms); + psym++) + { + QUIT; + symbol_completion_add (&result, SYMBOL_LINKAGE_NAME (*psym), + text, text_len, text0, word, + wild_match, encoded); + } + + for (psym = objfile->static_psymbols.list + ps->statics_offset; + psym < (objfile->static_psymbols.list + ps->statics_offset + + ps->n_static_syms); + psym++) + { + QUIT; + symbol_completion_add (&result, SYMBOL_LINKAGE_NAME (*psym), + text, text_len, text0, word, + wild_match, encoded); + } + } + + /* At this point scan through the misc symbol vectors and add each + symbol you find to the list. Eventually we want to ignore + anything that isn't a text symbol (everything else will be + handled by the psymtab code above). */ + + ALL_MSYMBOLS (objfile, msymbol) + { + QUIT; + symbol_completion_add (&result, SYMBOL_LINKAGE_NAME (msymbol), + text, text_len, text0, word, + wild_match, encoded); + } + + /* Search upwards from currently selected frame (so that we can + complete on local vars. */ + + for (b = get_selected_block (0); b != NULL; b = BLOCK_SUPERBLOCK (b)) + { + if (!BLOCK_SUPERBLOCK (b)) + surrounding_static_block = b; /* For elmin of dups */ + + ALL_BLOCK_SYMBOLS (b, iter, sym) { - defn_symbols[i] = sym; - defn_blocks[i] = block; - return; + symbol_completion_add (&result, SYMBOL_LINKAGE_NAME (sym), + text, text_len, text0, word, + wild_match, encoded); } } - tmp = defn_vector_size; - GROW_VECT (defn_symbols, tmp, ndefns + 2); - GROW_VECT (defn_blocks, defn_vector_size, ndefns + 2); + /* Go through the symtabs and check the externs and statics for + symbols which match. */ + + ALL_SYMTABS (objfile, s) + { + QUIT; + b = BLOCKVECTOR_BLOCK (BLOCKVECTOR (s), GLOBAL_BLOCK); + ALL_BLOCK_SYMBOLS (b, iter, sym) + { + symbol_completion_add (&result, SYMBOL_LINKAGE_NAME (sym), + text, text_len, text0, word, + wild_match, encoded); + } + } + + ALL_SYMTABS (objfile, s) + { + QUIT; + b = BLOCKVECTOR_BLOCK (BLOCKVECTOR (s), STATIC_BLOCK); + /* Don't do this block twice. */ + if (b == surrounding_static_block) + continue; + ALL_BLOCK_SYMBOLS (b, iter, sym) + { + symbol_completion_add (&result, SYMBOL_LINKAGE_NAME (sym), + text, text_len, text0, word, + wild_match, encoded); + } + } + + /* Append the closing NULL entry. */ + string_vector_append (&result, NULL); - defn_symbols[ndefns] = sym; - defn_blocks[ndefns] = block; - ndefns += 1; + return (result.array); } -/* Look, in partial_symtab PST, for symbol NAME in given domain. - Check the global symbols if GLOBAL, the static symbols if not. Do - wild-card match if WILD. */ +/* Look, in partial_symtab PST, for symbol NAME in given namespace. + Check the global symbols if GLOBAL, the static symbols if not. + Do wild-card match if WILD. */ static struct partial_symbol * ada_lookup_partial_symbol (struct partial_symtab *pst, const char *name, - int global, domain_enum domain, int wild) + int global, domain_enum namespace, int wild) { struct partial_symbol **start; int name_len = strlen (name); @@ -3312,121 +4147,123 @@ ada_lookup_partial_symbol (struct partial_symtab *pst, const char *name, } start = (global ? - pst->objfile->global_psymbols.list + pst->globals_offset : - pst->objfile->static_psymbols.list + pst->statics_offset); + pst->objfile->global_psymbols.list + pst->globals_offset : + pst->objfile->static_psymbols.list + pst->statics_offset); if (wild) { for (i = 0; i < length; i += 1) - { - struct partial_symbol *psym = start[i]; + { + struct partial_symbol *psym = start[i]; - if (SYMBOL_DOMAIN (psym) == domain && - wild_match (name, name_len, DEPRECATED_SYMBOL_NAME (psym))) - return psym; - } + if (SYMBOL_DOMAIN (psym) == namespace && + wild_match (name, name_len, SYMBOL_LINKAGE_NAME (psym))) + return psym; + } return NULL; } else { if (global) - { - int U; - i = 0; - U = length - 1; - while (U - i > 4) - { - int M = (U + i) >> 1; - struct partial_symbol *psym = start[M]; - if (DEPRECATED_SYMBOL_NAME (psym)[0] < name[0]) - i = M + 1; - else if (DEPRECATED_SYMBOL_NAME (psym)[0] > name[0]) - U = M - 1; - else if (strcmp (DEPRECATED_SYMBOL_NAME (psym), name) < 0) - i = M + 1; - else - U = M; - } - } + { + int U; + i = 0; + U = length - 1; + while (U - i > 4) + { + int M = (U + i) >> 1; + struct partial_symbol *psym = start[M]; + if (SYMBOL_LINKAGE_NAME (psym)[0] < name[0]) + i = M + 1; + else if (SYMBOL_LINKAGE_NAME (psym)[0] > name[0]) + U = M - 1; + else if (strcmp (SYMBOL_LINKAGE_NAME (psym), name) < 0) + i = M + 1; + else + U = M; + } + } else - i = 0; + i = 0; while (i < length) - { - struct partial_symbol *psym = start[i]; - - if (SYMBOL_DOMAIN (psym) == domain) - { - int cmp = strncmp (name, DEPRECATED_SYMBOL_NAME (psym), name_len); - - if (cmp < 0) - { - if (global) - break; - } - else if (cmp == 0 - && is_name_suffix (DEPRECATED_SYMBOL_NAME (psym) + name_len)) - return psym; - } - i += 1; - } + { + struct partial_symbol *psym = start[i]; + + if (SYMBOL_DOMAIN (psym) == namespace) + { + int cmp = strncmp (name, SYMBOL_LINKAGE_NAME (psym), name_len); + + if (cmp < 0) + { + if (global) + break; + } + else if (cmp == 0 + && is_name_suffix (SYMBOL_LINKAGE_NAME (psym) + + name_len)) + return psym; + } + i += 1; + } if (global) - { - int U; - i = 0; - U = length - 1; - while (U - i > 4) - { - int M = (U + i) >> 1; - struct partial_symbol *psym = start[M]; - if (DEPRECATED_SYMBOL_NAME (psym)[0] < '_') - i = M + 1; - else if (DEPRECATED_SYMBOL_NAME (psym)[0] > '_') - U = M - 1; - else if (strcmp (DEPRECATED_SYMBOL_NAME (psym), "_ada_") < 0) - i = M + 1; - else - U = M; - } - } + { + int U; + i = 0; + U = length - 1; + while (U - i > 4) + { + int M = (U + i) >> 1; + struct partial_symbol *psym = start[M]; + if (SYMBOL_LINKAGE_NAME (psym)[0] < '_') + i = M + 1; + else if (SYMBOL_LINKAGE_NAME (psym)[0] > '_') + U = M - 1; + else if (strcmp (SYMBOL_LINKAGE_NAME (psym), "_ada_") < 0) + i = M + 1; + else + U = M; + } + } else - i = 0; + i = 0; while (i < length) - { - struct partial_symbol *psym = start[i]; - - if (SYMBOL_DOMAIN (psym) == domain) - { - int cmp; - - cmp = (int) '_' - (int) DEPRECATED_SYMBOL_NAME (psym)[0]; - if (cmp == 0) - { - cmp = strncmp ("_ada_", DEPRECATED_SYMBOL_NAME (psym), 5); - if (cmp == 0) - cmp = strncmp (name, DEPRECATED_SYMBOL_NAME (psym) + 5, name_len); - } - - if (cmp < 0) - { - if (global) - break; - } - else if (cmp == 0 - && is_name_suffix (DEPRECATED_SYMBOL_NAME (psym) + name_len + 5)) - return psym; - } - i += 1; - } - + { + struct partial_symbol *psym = start[i]; + + if (SYMBOL_DOMAIN (psym) == namespace) + { + int cmp; + + cmp = (int) '_' - (int) SYMBOL_LINKAGE_NAME (psym)[0]; + if (cmp == 0) + { + cmp = strncmp ("_ada_", SYMBOL_LINKAGE_NAME (psym), 5); + if (cmp == 0) + cmp = strncmp (name, SYMBOL_LINKAGE_NAME (psym) + 5, + name_len); + } + + if (cmp < 0) + { + if (global) + break; + } + else if (cmp == 0 + && is_name_suffix (SYMBOL_LINKAGE_NAME (psym) + + name_len + 5)) + return psym; + } + i += 1; + } } return NULL; } - /* Find a symbol table containing symbol SYM or NULL if none. */ + static struct symtab * symtab_for_sym (struct symbol *sym) { @@ -3454,9 +4291,9 @@ symtab_for_sym (struct symbol *sym) b = BLOCKVECTOR_BLOCK (BLOCKVECTOR (s), STATIC_BLOCK); ALL_BLOCK_SYMBOLS (b, iter, tmp_sym) if (sym == tmp_sym) return s; - break; + break; default: - break; + break; } switch (SYMBOL_CLASS (sym)) { @@ -3481,95 +4318,125 @@ symtab_for_sym (struct symbol *sym) } break; default: - break; + break; } } return NULL; } -/* Return a minimal symbol matching NAME according to Ada demangling - rules. Returns NULL if there is no such minimal symbol. */ +/* Return a minimal symbol matching NAME according to Ada decoding + rules. Returns NULL if there is no such minimal symbol. Names + prefixed with "standard__" are handled specially: "standard__" is + first stripped off, and only static and global symbols are searched. */ struct minimal_symbol * -ada_lookup_minimal_symbol (const char *name) +ada_lookup_simple_minsym (const char *name) { struct objfile *objfile; struct minimal_symbol *msymbol; - int wild_match = (strstr (name, "__") == NULL); + int wild_match; + + if (strncmp (name, "standard__", sizeof ("standard__") - 1) == 0) + { + name += sizeof ("standard__") - 1; + wild_match = 0; + } + else + wild_match = (strstr (name, "__") == NULL); ALL_MSYMBOLS (objfile, msymbol) { - if (ada_match_name (DEPRECATED_SYMBOL_NAME (msymbol), name, wild_match) - && MSYMBOL_TYPE (msymbol) != mst_solib_trampoline) + if (ada_match_name (SYMBOL_LINKAGE_NAME (msymbol), name, wild_match) + && MSYMBOL_TYPE (msymbol) != mst_solib_trampoline) return msymbol; } return NULL; } +/* Return up minimal symbol for NAME, folded and encoded according to + Ada conventions, or NULL if none. The last two arguments are ignored. */ + +static struct minimal_symbol * +ada_lookup_minimal_symbol (const char *name, const char *sfile, + struct objfile *objf) +{ + return ada_lookup_simple_minsym (ada_encode (name)); +} + /* For all subprograms that statically enclose the subprogram of the - * selected frame, add symbols matching identifier NAME in DOMAIN - * and their blocks to vectors *defn_symbols and *defn_blocks, as for - * ada_add_block_symbols (q.v.). If WILD, treat as NAME with a - * wildcard prefix. At the moment, this function uses a heuristic to - * find the frames of enclosing subprograms: it treats the - * pointer-sized value at location 0 from the local-variable base of a - * frame as a static link, and then searches up the call stack for a - * frame with that same local-variable base. */ + selected frame, add symbols matching identifier NAME in DOMAIN + and their blocks to the list of data in OBSTACKP, as for + ada_add_block_symbols (q.v.). If WILD, treat as NAME with a + wildcard prefix. */ + static void -add_symbols_from_enclosing_procs (const char *name, domain_enum domain, - int wild_match) -{ -#ifdef i386 +add_symbols_from_enclosing_procs (struct obstack *obstackp, + const char *name, domain_enum namespace, + int wild_match) +{ +#ifdef HAVE_ADD_SYMBOLS_FROM_ENCLOSING_PROCS + /* Use a heuristic to find the frames of enclosing subprograms: treat the + pointer-sized value at location 0 from the local-variable base of a + frame as a static link, and then search up the call stack for a + frame with that same local-variable base. */ static struct symbol static_link_sym; static struct symbol *static_link; + struct value *target_link_val; struct cleanup *old_chain = make_cleanup (null_cleanup, NULL); struct frame_info *frame; - struct frame_info *target_frame; + + if (! target_has_stack) + return; if (static_link == NULL) { /* Initialize the local variable symbol that stands for the - * static link (when it exists). */ + static link (when there is one). */ static_link = &static_link_sym; - DEPRECATED_SYMBOL_NAME (static_link) = ""; + SYMBOL_LINKAGE_NAME (static_link) = ""; SYMBOL_LANGUAGE (static_link) = language_unknown; SYMBOL_CLASS (static_link) = LOC_LOCAL; SYMBOL_DOMAIN (static_link) = VAR_DOMAIN; SYMBOL_TYPE (static_link) = lookup_pointer_type (builtin_type_void); SYMBOL_VALUE (static_link) = - -(long) TYPE_LENGTH (SYMBOL_TYPE (static_link)); + -(long) TYPE_LENGTH (SYMBOL_TYPE (static_link)); } - frame = deprecated_selected_frame; - while (frame != NULL && ndefns == 0) + frame = get_selected_frame (); + if (frame == NULL + || inside_main_func (get_frame_address_in_block (frame))) + return; + + target_link_val = read_var_value (static_link, frame); + while (target_link_val != NULL + && num_defns_collected (obstackp) == 0 + && frame_relative_level (frame) <= MAX_ENCLOSING_FRAME_LEVELS) { - struct block *block; - struct value *target_link_val = read_var_value (static_link, frame); - CORE_ADDR target_link; + CORE_ADDR target_link = value_as_address (target_link_val); - if (target_link_val == NULL) + frame = get_prev_frame (frame); + if (frame == NULL) break; - QUIT; - target_link = target_link_val; - do + if (get_frame_locals_address (frame) == target_link) { + struct block *block; + QUIT; - frame = get_prev_frame (frame); - } - while (frame != NULL && DEPRECATED_FRAME_LOCALS_ADDRESS (frame) != target_link); - - if (frame == NULL) - break; - block = get_frame_block (frame, 0); - while (block != NULL && block_function (block) != NULL && ndefns == 0) - { - ada_add_block_symbols (block, name, domain, NULL, wild_match); + block = get_frame_block (frame, 0); + while (block != NULL && block_function (block) != NULL + && num_defns_collected (obstackp) == 0) + { + QUIT; - block = BLOCK_SUPERBLOCK (block); + ada_add_block_symbols (obstackp, block, name, namespace, + NULL, NULL, wild_match); + + block = BLOCK_SUPERBLOCK (block); + } } } @@ -3578,54 +4445,52 @@ add_symbols_from_enclosing_procs (const char *name, domain_enum domain, } /* True if TYPE is definitely an artificial type supplied to a symbol - * for which no debugging information was given in the symbol file. */ + for which no debugging information was given in the symbol file. */ + static int is_nondebugging_type (struct type *type) { char *name = ada_type_name (type); - return (name != NULL && DEPRECATED_STREQ (name, "<variable, no debug info>")); + return (name != NULL && strcmp (name, "<variable, no debug info>") == 0); } -/* Remove any non-debugging symbols in SYMS[0 .. NSYMS-1] that definitely - * duplicate other symbols in the list. (The only case I know of where - * this happens is when object files containing stabs-in-ecoff are - * linked with files containing ordinary ecoff debugging symbols (or no - * debugging symbols)). Modifies SYMS to squeeze out deleted symbols, - * and applies the same modification to BLOCKS to maintain the - * correspondence between SYMS[i] and BLOCKS[i]. Returns the number - * of symbols in the modified list. */ +/* Remove any non-debugging symbols in SYMS[0 .. NSYMS-1] that definitely + duplicate other symbols in the list (The only case I know of where + this happens is when object files containing stabs-in-ecoff are + linked with files containing ordinary ecoff debugging symbols (or no + debugging symbols)). Modifies SYMS to squeeze out deleted entries. + Returns the number of items in the modified list. */ + static int -remove_extra_symbols (struct symbol **syms, struct block **blocks, int nsyms) +remove_extra_symbols (struct ada_symbol_info *syms, int nsyms) { int i, j; i = 0; while (i < nsyms) { - if (DEPRECATED_SYMBOL_NAME (syms[i]) != NULL - && SYMBOL_CLASS (syms[i]) == LOC_STATIC - && is_nondebugging_type (SYMBOL_TYPE (syms[i]))) - { - for (j = 0; j < nsyms; j += 1) - { - if (i != j - && DEPRECATED_SYMBOL_NAME (syms[j]) != NULL - && DEPRECATED_STREQ (DEPRECATED_SYMBOL_NAME (syms[i]), DEPRECATED_SYMBOL_NAME (syms[j])) - && SYMBOL_CLASS (syms[i]) == SYMBOL_CLASS (syms[j]) - && SYMBOL_VALUE_ADDRESS (syms[i]) - == SYMBOL_VALUE_ADDRESS (syms[j])) - { - int k; - for (k = i + 1; k < nsyms; k += 1) - { - syms[k - 1] = syms[k]; - blocks[k - 1] = blocks[k]; - } - nsyms -= 1; - goto NextSymbol; - } - } - } + if (SYMBOL_LINKAGE_NAME (syms[i].sym) != NULL + && SYMBOL_CLASS (syms[i].sym) == LOC_STATIC + && is_nondebugging_type (SYMBOL_TYPE (syms[i].sym))) + { + for (j = 0; j < nsyms; j += 1) + { + if (i != j + && SYMBOL_LINKAGE_NAME (syms[j].sym) != NULL + && strcmp (SYMBOL_LINKAGE_NAME (syms[i].sym), + SYMBOL_LINKAGE_NAME (syms[j].sym)) == 0 + && SYMBOL_CLASS (syms[i].sym) == SYMBOL_CLASS (syms[j].sym) + && SYMBOL_VALUE_ADDRESS (syms[i].sym) + == SYMBOL_VALUE_ADDRESS (syms[j].sym)) + { + int k; + for (k = i + 1; k < nsyms; k += 1) + syms[k - 1] = syms[k]; + nsyms -= 1; + goto NextSymbol; + } + } + } i += 1; NextSymbol: ; @@ -3633,63 +4498,264 @@ remove_extra_symbols (struct symbol **syms, struct block **blocks, int nsyms) return nsyms; } -/* Find symbols in DOMAIN matching NAME, in BLOCK0 and enclosing - scope and in global scopes, returning the number of matches. Sets - *SYMS to point to a vector of matching symbols, with *BLOCKS - pointing to the vector of corresponding blocks in which those - symbols reside. These two vectors are transient---good only to the - next call of ada_lookup_symbol_list. Any non-function/non-enumeral symbol - match within the nest of blocks whose innermost member is BLOCK0, - is the outermost match returned (no other matches in that or - enclosing blocks is returned). If there are any matches in or - surrounding BLOCK0, then these alone are returned. */ +/* Given a type that corresponds to a renaming entity, use the type name + to extract the scope (package name or function name, fully qualified, + and following the GNAT encoding convention) where this renaming has been + defined. The string returned needs to be deallocated after use. */ + +static char * +xget_renaming_scope (struct type *renaming_type) +{ + /* The renaming types adhere to the following convention: + <scope>__<rename>___<XR extension>. + So, to extract the scope, we search for the "___XR" extension, + and then backtrack until we find the first "__". */ + + const char *name = type_name_no_tag (renaming_type); + char *suffix = strstr (name, "___XR"); + char *last; + int scope_len; + char *scope; + + /* Now, backtrack a bit until we find the first "__". Start looking + at suffix - 3, as the <rename> part is at least one character long. */ + + for (last = suffix - 3; last > name; last--) + if (last[0] == '_' && last[1] == '_') + break; + + /* Make a copy of scope and return it. */ + + scope_len = last - name; + scope = (char *) xmalloc ((scope_len + 1) * sizeof (char)); + + strncpy (scope, name, scope_len); + scope[scope_len] = '\0'; + + return scope; +} + +/* Return nonzero if NAME corresponds to a package name. */ + +static int +is_package_name (const char *name) +{ + /* Here, We take advantage of the fact that no symbols are generated + for packages, while symbols are generated for each function. + So the condition for NAME represent a package becomes equivalent + to NAME not existing in our list of symbols. There is only one + small complication with library-level functions (see below). */ + + char *fun_name; + + /* If it is a function that has not been defined at library level, + then we should be able to look it up in the symbols. */ + if (standard_lookup (name, NULL, VAR_DOMAIN) != NULL) + return 0; + + /* Library-level function names start with "_ada_". See if function + "_ada_" followed by NAME can be found. */ + + /* Do a quick check that NAME does not contain "__", since library-level + functions names can not contain "__" in them. */ + if (strstr (name, "__") != NULL) + return 0; + + fun_name = (char *) alloca (strlen (name) + 5 + 1); + xasprintf (&fun_name, "_ada_%s", name); + + return (standard_lookup (fun_name, NULL, VAR_DOMAIN) == NULL); +} + +/* Return nonzero if SYM corresponds to a renaming entity that is + visible from FUNCTION_NAME. */ + +static int +renaming_is_visible (const struct symbol *sym, char *function_name) +{ + char *scope = xget_renaming_scope (SYMBOL_TYPE (sym)); + + make_cleanup (xfree, scope); + + /* If the rename has been defined in a package, then it is visible. */ + if (is_package_name (scope)) + return 1; + + /* Check that the rename is in the current function scope by checking + that its name starts with SCOPE. */ + + /* If the function name starts with "_ada_", it means that it is + a library-level function. Strip this prefix before doing the + comparison, as the encoding for the renaming does not contain + this prefix. */ + if (strncmp (function_name, "_ada_", 5) == 0) + function_name += 5; + + return (strncmp (function_name, scope, strlen (scope)) == 0); +} + +/* Iterates over the SYMS list and remove any entry that corresponds to + a renaming entity that is not visible from the function associated + with CURRENT_BLOCK. + + Rationale: + GNAT emits a type following a specified encoding for each renaming + entity. Unfortunately, STABS currently does not support the definition + of types that are local to a given lexical block, so all renamings types + are emitted at library level. As a consequence, if an application + contains two renaming entities using the same name, and a user tries to + print the value of one of these entities, the result of the ada symbol + lookup will also contain the wrong renaming type. + + This function partially covers for this limitation by attempting to + remove from the SYMS list renaming symbols that should be visible + from CURRENT_BLOCK. However, there does not seem be a 100% reliable + method with the current information available. The implementation + below has a couple of limitations (FIXME: brobecker-2003-05-12): + + - When the user tries to print a rename in a function while there + is another rename entity defined in a package: Normally, the + rename in the function has precedence over the rename in the + package, so the latter should be removed from the list. This is + currently not the case. + + - This function will incorrectly remove valid renames if + the CURRENT_BLOCK corresponds to a function which symbol name + has been changed by an "Export" pragma. As a consequence, + the user will be unable to print such rename entities. */ + +static int +remove_out_of_scope_renamings (struct ada_symbol_info *syms, + int nsyms, + struct block *current_block) +{ + struct symbol *current_function; + char *current_function_name; + int i; + + /* Extract the function name associated to CURRENT_BLOCK. + Abort if unable to do so. */ + + if (current_block == NULL) + return nsyms; + + current_function = block_function (current_block); + if (current_function == NULL) + return nsyms; + + current_function_name = SYMBOL_LINKAGE_NAME (current_function); + if (current_function_name == NULL) + return nsyms; + + /* Check each of the symbols, and remove it from the list if it is + a type corresponding to a renaming that is out of the scope of + the current block. */ + + i = 0; + while (i < nsyms) + { + if (ada_is_object_renaming (syms[i].sym) + && !renaming_is_visible (syms[i].sym, current_function_name)) + { + int j; + for (j = i + 1; j < nsyms; j++) + syms[j - 1] = syms[j]; + nsyms -= 1; + } + else + i += 1; + } + + return nsyms; +} + +/* Find symbols in DOMAIN matching NAME0, in BLOCK0 and enclosing + scope and in global scopes, returning the number of matches. Sets + *RESULTS to point to a vector of (SYM,BLOCK,SYMTAB) triples, + indicating the symbols found and the blocks and symbol tables (if + any) in which they were found. This vector are transient---good only to + the next call of ada_lookup_symbol_list. Any non-function/non-enumeral + symbol match within the nest of blocks whose innermost member is BLOCK0, + is the one match returned (no other matches in that or + enclosing blocks is returned). If there are any matches in or + surrounding BLOCK0, then these alone are returned. Otherwise, the + search extends to global and file-scope (static) symbol tables. + Names prefixed with "standard__" are handled specially: "standard__" + is first stripped off, and only static and global symbols are searched. */ int -ada_lookup_symbol_list (const char *name, struct block *block0, - domain_enum domain, struct symbol ***syms, - struct block ***blocks) +ada_lookup_symbol_list (const char *name0, const struct block *block0, + domain_enum namespace, + struct ada_symbol_info **results) { struct symbol *sym; struct symtab *s; struct partial_symtab *ps; struct blockvector *bv; struct objfile *objfile; - struct block *b; struct block *block; + const char *name; struct minimal_symbol *msymbol; - int wild_match = (strstr (name, "__") == NULL); + int wild_match; int cacheIfUnique; + int block_depth; + int ndefns; -#ifdef TIMING - markTimeStart (0); -#endif + obstack_free (&symbol_list_obstack, NULL); + obstack_init (&symbol_list_obstack); - ndefns = 0; cacheIfUnique = 0; /* Search specified block and its superiors. */ - block = block0; + wild_match = (strstr (name0, "__") == NULL); + name = name0; + block = (struct block *) block0; /* FIXME: No cast ought to be + needed, but adding const will + have a cascade effect. */ + if (strncmp (name0, "standard__", sizeof ("standard__") - 1) == 0) + { + wild_match = 0; + block = NULL; + name = name0 + sizeof ("standard__") - 1; + } + + block_depth = 0; while (block != NULL) { - ada_add_block_symbols (block, name, domain, NULL, wild_match); + block_depth += 1; + ada_add_block_symbols (&symbol_list_obstack, block, name, + namespace, NULL, NULL, wild_match); - /* If we found a non-function match, assume that's the one. */ - if (is_nonfunction (defn_symbols, ndefns)) - goto done; + /* If we found a non-function match, assume that's the one. */ + if (is_nonfunction (defns_collected (&symbol_list_obstack, 0), + num_defns_collected (&symbol_list_obstack))) + goto done; block = BLOCK_SUPERBLOCK (block); } - /* If we found ANY matches in the specified BLOCK, we're done. */ + /* If no luck so far, try to find NAME as a local symbol in some lexically + enclosing subprogram. */ + if (num_defns_collected (&symbol_list_obstack) == 0 && block_depth > 2) + add_symbols_from_enclosing_procs (&symbol_list_obstack, + name, namespace, wild_match); + + /* If we found ANY matches among non-global symbols, we're done. */ - if (ndefns > 0) + if (num_defns_collected (&symbol_list_obstack) > 0) goto done; cacheIfUnique = 1; + if (lookup_cached_symbol (name0, namespace, &sym, &block, &s)) + { + if (sym != NULL) + add_defn_to_vec (&symbol_list_obstack, sym, block, s); + goto done; + } /* Now add symbols from all global blocks: symbol tables, minimal symbol - tables, and psymtab's */ + tables, and psymtab's. */ ALL_SYMTABS (objfile, s) { @@ -3698,41 +4764,43 @@ ada_lookup_symbol_list (const char *name, struct block *block0, continue; bv = BLOCKVECTOR (s); block = BLOCKVECTOR_BLOCK (bv, GLOBAL_BLOCK); - ada_add_block_symbols (block, name, domain, objfile, wild_match); + ada_add_block_symbols (&symbol_list_obstack, block, name, namespace, + objfile, s, wild_match); } - if (domain == VAR_DOMAIN) + if (namespace == VAR_DOMAIN) { ALL_MSYMBOLS (objfile, msymbol) { - if (ada_match_name (DEPRECATED_SYMBOL_NAME (msymbol), name, wild_match)) - { - switch (MSYMBOL_TYPE (msymbol)) - { - case mst_solib_trampoline: - break; - default: - s = find_pc_symtab (SYMBOL_VALUE_ADDRESS (msymbol)); - if (s != NULL) - { - int old_ndefns = ndefns; - QUIT; - bv = BLOCKVECTOR (s); - block = BLOCKVECTOR_BLOCK (bv, GLOBAL_BLOCK); - ada_add_block_symbols (block, - DEPRECATED_SYMBOL_NAME (msymbol), - domain, objfile, wild_match); - if (ndefns == old_ndefns) - { - block = BLOCKVECTOR_BLOCK (bv, STATIC_BLOCK); - ada_add_block_symbols (block, - DEPRECATED_SYMBOL_NAME (msymbol), - domain, objfile, - wild_match); - } - } - } - } + if (ada_match_name (SYMBOL_LINKAGE_NAME (msymbol), name, wild_match)) + { + switch (MSYMBOL_TYPE (msymbol)) + { + case mst_solib_trampoline: + break; + default: + s = find_pc_symtab (SYMBOL_VALUE_ADDRESS (msymbol)); + if (s != NULL) + { + int ndefns0 = num_defns_collected (&symbol_list_obstack); + QUIT; + bv = BLOCKVECTOR (s); + block = BLOCKVECTOR_BLOCK (bv, GLOBAL_BLOCK); + ada_add_block_symbols (&symbol_list_obstack, block, + SYMBOL_LINKAGE_NAME (msymbol), + namespace, objfile, s, wild_match); + + if (num_defns_collected (&symbol_list_obstack) == ndefns0) + { + block = BLOCKVECTOR_BLOCK (bv, STATIC_BLOCK); + ada_add_block_symbols (&symbol_list_obstack, block, + SYMBOL_LINKAGE_NAME (msymbol), + namespace, objfile, s, + wild_match); + } + } + } + } } } @@ -3740,220 +4808,376 @@ ada_lookup_symbol_list (const char *name, struct block *block0, { QUIT; if (!ps->readin - && ada_lookup_partial_symbol (ps, name, 1, domain, wild_match)) + && ada_lookup_partial_symbol (ps, name, 1, namespace, wild_match)) { - s = PSYMTAB_TO_SYMTAB (ps); - if (!s->primary) - continue; - bv = BLOCKVECTOR (s); - block = BLOCKVECTOR_BLOCK (bv, GLOBAL_BLOCK); - ada_add_block_symbols (block, name, domain, objfile, wild_match); + s = PSYMTAB_TO_SYMTAB (ps); + if (!s->primary) + continue; + bv = BLOCKVECTOR (s); + block = BLOCKVECTOR_BLOCK (bv, GLOBAL_BLOCK); + ada_add_block_symbols (&symbol_list_obstack, block, name, + namespace, objfile, s, wild_match); } } - /* Now add symbols from all per-file blocks if we've gotten no hits. + /* Now add symbols from all per-file blocks if we've gotten no hits (Not strictly correct, but perhaps better than an error). - Do the symtabs first, then check the psymtabs */ + Do the symtabs first, then check the psymtabs. */ - if (ndefns == 0) + if (num_defns_collected (&symbol_list_obstack) == 0) { ALL_SYMTABS (objfile, s) { - QUIT; - if (!s->primary) - continue; - bv = BLOCKVECTOR (s); - block = BLOCKVECTOR_BLOCK (bv, STATIC_BLOCK); - ada_add_block_symbols (block, name, domain, objfile, wild_match); + QUIT; + if (!s->primary) + continue; + bv = BLOCKVECTOR (s); + block = BLOCKVECTOR_BLOCK (bv, STATIC_BLOCK); + ada_add_block_symbols (&symbol_list_obstack, block, name, namespace, + objfile, s, wild_match); } ALL_PSYMTABS (objfile, ps) { - QUIT; - if (!ps->readin - && ada_lookup_partial_symbol (ps, name, 0, domain, wild_match)) - { - s = PSYMTAB_TO_SYMTAB (ps); - bv = BLOCKVECTOR (s); - if (!s->primary) - continue; - block = BLOCKVECTOR_BLOCK (bv, STATIC_BLOCK); - ada_add_block_symbols (block, name, domain, - objfile, wild_match); - } + QUIT; + if (!ps->readin + && ada_lookup_partial_symbol (ps, name, 0, namespace, wild_match)) + { + s = PSYMTAB_TO_SYMTAB (ps); + bv = BLOCKVECTOR (s); + if (!s->primary) + continue; + block = BLOCKVECTOR_BLOCK (bv, STATIC_BLOCK); + ada_add_block_symbols (&symbol_list_obstack, block, name, + namespace, objfile, s, wild_match); + } } } - /* Finally, we try to find NAME as a local symbol in some lexically - enclosing block. We do this last, expecting this case to be - rare. */ +done: + ndefns = num_defns_collected (&symbol_list_obstack); + *results = defns_collected (&symbol_list_obstack, 1); + + ndefns = remove_extra_symbols (*results, ndefns); + if (ndefns == 0) - { - add_symbols_from_enclosing_procs (name, domain, wild_match); - if (ndefns > 0) - goto done; - } + cache_symbol (name0, namespace, NULL, NULL, NULL); -done: - ndefns = remove_extra_symbols (defn_symbols, defn_blocks, ndefns); + if (ndefns == 1 && cacheIfUnique) + cache_symbol (name0, namespace, (*results)[0].sym, (*results)[0].block, + (*results)[0].symtab); + ndefns = remove_out_of_scope_renamings (*results, ndefns, + (struct block *) block0); - *syms = defn_symbols; - *blocks = defn_blocks; -#ifdef TIMING - markTimeStop (0); -#endif return ndefns; } -/* Return a symbol in DOMAIN matching NAME, in BLOCK0 and enclosing - * scope and in global scopes, or NULL if none. NAME is folded to - * lower case first, unless it is surrounded in single quotes. - * Otherwise, the result is as for ada_lookup_symbol_list, but is - * disambiguated by user query if needed. */ +/* Return a symbol in DOMAIN matching NAME, in BLOCK0 and enclosing + scope and in global scopes, or NULL if none. NAME is folded and + encoded first. Otherwise, the result is as for ada_lookup_symbol_list, + but is disambiguated by user query if needed. *IS_A_FIELD_OF_THIS is + set to 0 and *SYMTAB is set to the symbol table in which the symbol + was found (in both cases, these assignments occur only if the + pointers are non-null). */ + struct symbol * -ada_lookup_symbol (const char *name, struct block *block0, - domain_enum domain) +ada_lookup_symbol (const char *name, const struct block *block0, + domain_enum namespace, int *is_a_field_of_this, + struct symtab **symtab) { - struct symbol **candidate_syms; - struct block **candidate_blocks; + struct ada_symbol_info *candidates; int n_candidates; - n_candidates = ada_lookup_symbol_list (name, - block0, domain, - &candidate_syms, &candidate_blocks); + n_candidates = ada_lookup_symbol_list (ada_encode (ada_fold_name (name)), + block0, namespace, &candidates); if (n_candidates == 0) return NULL; else if (n_candidates != 1) - user_select_syms (candidate_syms, candidate_blocks, n_candidates, 1); + user_select_syms (candidates, n_candidates, 1); + + if (is_a_field_of_this != NULL) + *is_a_field_of_this = 0; + + if (symtab != NULL) + { + *symtab = candidates[0].symtab; + if (*symtab == NULL && candidates[0].block != NULL) + { + struct objfile *objfile; + struct symtab *s; + struct block *b; + struct blockvector *bv; + + /* Search the list of symtabs for one which contains the + address of the start of this block. */ + ALL_SYMTABS (objfile, s) + { + bv = BLOCKVECTOR (s); + b = BLOCKVECTOR_BLOCK (bv, GLOBAL_BLOCK); + if (BLOCK_START (b) <= BLOCK_START (candidates[0].block) + && BLOCK_END (b) > BLOCK_START (candidates[0].block)) + { + *symtab = s; + return fixup_symbol_section (candidates[0].sym, objfile); + } + return fixup_symbol_section (candidates[0].sym, NULL); + } + } + } + return candidates[0].sym; +} - return candidate_syms[0]; +static struct symbol * +ada_lookup_symbol_nonlocal (const char *name, + const char *linkage_name, + const struct block *block, + const domain_enum domain, + struct symtab **symtab) +{ + if (linkage_name == NULL) + linkage_name = name; + return ada_lookup_symbol (linkage_name, block_static_block (block), domain, + NULL, symtab); } -/* True iff STR is a possible encoded suffix of a normal Ada name - * that is to be ignored for matching purposes. Suffixes of parallel - * names (e.g., XVE) are not included here. Currently, the possible suffixes - * are given by the regular expression: - * (X[nb]*)?(__[0-9]+|\$[0-9]+|___(LJM|X([FDBUP].*|R[^T]?)))?$ - * +/* True iff STR is a possible encoded suffix of a normal Ada name + that is to be ignored for matching purposes. Suffixes of parallel + names (e.g., XVE) are not included here. Currently, the possible suffixes + are given by either of the regular expression: + + (__[0-9]+)?\.[0-9]+ [nested subprogram suffix, on platforms such as Linux] + ___[0-9]+ [nested subprogram suffix, on platforms such as HP/UX] + (X[nb]*)?((\$|__)[0-9](_?[0-9]+)|___(LJM|X([FDBUP].*|R[^T]?)))?$ */ + static int is_name_suffix (const char *str) { int k; + const char *matching; + const int len = strlen (str); + + /* (__[0-9]+)?\.[0-9]+ */ + matching = str; + if (len > 3 && str[0] == '_' && str[1] == '_' && isdigit (str[2])) + { + matching += 3; + while (isdigit (matching[0])) + matching += 1; + if (matching[0] == '\0') + return 1; + } + + if (matching[0] == '.') + { + matching += 1; + while (isdigit (matching[0])) + matching += 1; + if (matching[0] == '\0') + return 1; + } + + /* ___[0-9]+ */ + if (len > 3 && str[0] == '_' && str[1] == '_' && str[2] == '_') + { + matching = str + 3; + while (isdigit (matching[0])) + matching += 1; + if (matching[0] == '\0') + return 1; + } + + /* ??? We should not modify STR directly, as we are doing below. This + is fine in this case, but may become problematic later if we find + that this alternative did not work, and want to try matching + another one from the begining of STR. Since we modified it, we + won't be able to find the begining of the string anymore! */ if (str[0] == 'X') { str += 1; while (str[0] != '_' && str[0] != '\0') - { - if (str[0] != 'n' && str[0] != 'b') - return 0; - str += 1; - } + { + if (str[0] != 'n' && str[0] != 'b') + return 0; + str += 1; + } } if (str[0] == '\000') return 1; if (str[0] == '_') { if (str[1] != '_' || str[2] == '\000') - return 0; + return 0; if (str[2] == '_') - { - if (DEPRECATED_STREQ (str + 3, "LJM")) - return 1; - if (str[3] != 'X') - return 0; - if (str[4] == 'F' || str[4] == 'D' || str[4] == 'B' || - str[4] == 'U' || str[4] == 'P') - return 1; - if (str[4] == 'R' && str[5] != 'T') - return 1; - return 0; - } - for (k = 2; str[k] != '\0'; k += 1) - if (!isdigit (str[k])) - return 0; + { + if (strcmp (str + 3, "LJM") == 0) + return 1; + if (str[3] != 'X') + return 0; + if (str[4] == 'F' || str[4] == 'D' || str[4] == 'B' || + str[4] == 'U' || str[4] == 'P') + return 1; + if (str[4] == 'R' && str[5] != 'T') + return 1; + return 0; + } + if (!isdigit (str[2])) + return 0; + for (k = 3; str[k] != '\0'; k += 1) + if (!isdigit (str[k]) && str[k] != '_') + return 0; return 1; } - if (str[0] == '$' && str[1] != '\000') + if (str[0] == '$' && isdigit (str[1])) { - for (k = 1; str[k] != '\0'; k += 1) - if (!isdigit (str[k])) - return 0; + for (k = 2; str[k] != '\0'; k += 1) + if (!isdigit (str[k]) && str[k] != '_') + return 0; return 1; } return 0; } -/* True if NAME represents a name of the form A1.A2....An, n>=1 and - * PATN[0..PATN_LEN-1] = Ak.Ak+1.....An for some k >= 1. Ignores - * informational suffixes of NAME (i.e., for which is_name_suffix is - * true). */ +/* Return nonzero if the given string starts with a dot ('.') + followed by zero or more digits. + + Note: brobecker/2003-11-10: A forward declaration has not been + added at the begining of this file yet, because this function + is only used to work around a problem found during wild matching + when trying to match minimal symbol names against symbol names + obtained from dwarf-2 data. This function is therefore currently + only used in wild_match() and is likely to be deleted when the + problem in dwarf-2 is fixed. */ + static int -wild_match (const char *patn, int patn_len, const char *name) +is_dot_digits_suffix (const char *str) +{ + if (str[0] != '.') + return 0; + + str++; + while (isdigit (str[0])) + str++; + return (str[0] == '\0'); +} + +/* True if NAME represents a name of the form A1.A2....An, n>=1 and + PATN[0..PATN_LEN-1] = Ak.Ak+1.....An for some k >= 1. Ignores + informational suffixes of NAME (i.e., for which is_name_suffix is + true). */ + +static int +wild_match (const char *patn0, int patn_len, const char *name0) { int name_len; - int s, e; + char *name; + char *patn; + + /* FIXME: brobecker/2003-11-10: For some reason, the symbol name + stored in the symbol table for nested function names is sometimes + different from the name of the associated entity stored in + the dwarf-2 data: This is the case for nested subprograms, where + the minimal symbol name contains a trailing ".[:digit:]+" suffix, + while the symbol name from the dwarf-2 data does not. + + Although the DWARF-2 standard documents that entity names stored + in the dwarf-2 data should be identical to the name as seen in + the source code, GNAT takes a different approach as we already use + a special encoding mechanism to convey the information so that + a C debugger can still use the information generated to debug + Ada programs. A corollary is that the symbol names in the dwarf-2 + data should match the names found in the symbol table. I therefore + consider this issue as a compiler defect. + + Until the compiler is properly fixed, we work-around the problem + by ignoring such suffixes during the match. We do so by making + a copy of PATN0 and NAME0, and then by stripping such a suffix + if present. We then perform the match on the resulting strings. */ + { + char *dot; + name_len = strlen (name0); + + name = (char *) alloca ((name_len + 1) * sizeof (char)); + strcpy (name, name0); + dot = strrchr (name, '.'); + if (dot != NULL && is_dot_digits_suffix (dot)) + *dot = '\0'; + + patn = (char *) alloca ((patn_len + 1) * sizeof (char)); + strncpy (patn, patn0, patn_len); + patn[patn_len] = '\0'; + dot = strrchr (patn, '.'); + if (dot != NULL && is_dot_digits_suffix (dot)) + { + *dot = '\0'; + patn_len = dot - patn; + } + } + + /* Now perform the wild match. */ name_len = strlen (name); - if (name_len >= patn_len + 5 && DEPRECATED_STREQN (name, "_ada_", 5) - && DEPRECATED_STREQN (patn, name + 5, patn_len) + if (name_len >= patn_len + 5 && strncmp (name, "_ada_", 5) == 0 + && strncmp (patn, name + 5, patn_len) == 0 && is_name_suffix (name + patn_len + 5)) return 1; while (name_len >= patn_len) { - if (DEPRECATED_STREQN (patn, name, patn_len) && is_name_suffix (name + patn_len)) - return 1; + if (strncmp (patn, name, patn_len) == 0 + && is_name_suffix (name + patn_len)) + return 1; do - { - name += 1; - name_len -= 1; - } + { + name += 1; + name_len -= 1; + } while (name_len > 0 - && name[0] != '.' && (name[0] != '_' || name[1] != '_')); + && name[0] != '.' && (name[0] != '_' || name[1] != '_')); if (name_len <= 0) - return 0; + return 0; if (name[0] == '_') - { - if (!islower (name[2])) - return 0; - name += 2; - name_len -= 2; - } + { + if (!islower (name[2])) + return 0; + name += 2; + name_len -= 2; + } else - { - if (!islower (name[1])) - return 0; - name += 1; - name_len -= 1; - } + { + if (!islower (name[1])) + return 0; + name += 1; + name_len -= 1; + } } return 0; } -/* Add symbols from BLOCK matching identifier NAME in DOMAIN to - vector *defn_symbols, updating *defn_symbols (if necessary), *SZ (the size of - the vector *defn_symbols), and *ndefns (the number of symbols - currently stored in *defn_symbols). If WILD, treat as NAME with a - wildcard prefix. OBJFILE is the section containing BLOCK. */ +/* Add symbols from BLOCK matching identifier NAME in DOMAIN to + vector *defn_symbols, updating the list of symbols in OBSTACKP + (if necessary). If WILD, treat as NAME with a wildcard prefix. + OBJFILE is the section containing BLOCK. + SYMTAB is recorded with each symbol added. */ static void -ada_add_block_symbols (struct block *block, const char *name, - domain_enum domain, struct objfile *objfile, - int wild) +ada_add_block_symbols (struct obstack *obstackp, + struct block *block, const char *name, + domain_enum domain, struct objfile *objfile, + struct symtab *symtab, int wild) { struct dict_iterator iter; int name_len = strlen (name); - /* A matching argument symbol, if any. */ + /* A matching argument symbol, if any. */ struct symbol *arg_sym; - /* Set true when we find a matching non-argument symbol */ + /* Set true when we find a matching non-argument symbol. */ int found_sym; struct symbol *sym; @@ -3963,72 +5187,73 @@ ada_add_block_symbols (struct block *block, const char *name, { struct symbol *sym; ALL_BLOCK_SYMBOLS (block, iter, sym) - { - if (SYMBOL_DOMAIN (sym) == domain && - wild_match (name, name_len, DEPRECATED_SYMBOL_NAME (sym))) - { - switch (SYMBOL_CLASS (sym)) - { - case LOC_ARG: - case LOC_LOCAL_ARG: - case LOC_REF_ARG: - case LOC_REGPARM: - case LOC_REGPARM_ADDR: - case LOC_BASEREG_ARG: - case LOC_COMPUTED_ARG: - arg_sym = sym; - break; - case LOC_UNRESOLVED: - continue; - default: - found_sym = 1; - fill_in_ada_prototype (sym); - add_defn_to_vec (fixup_symbol_section (sym, objfile), block); - break; - } - } - } + { + if (SYMBOL_DOMAIN (sym) == domain && + wild_match (name, name_len, SYMBOL_LINKAGE_NAME (sym))) + { + switch (SYMBOL_CLASS (sym)) + { + case LOC_ARG: + case LOC_LOCAL_ARG: + case LOC_REF_ARG: + case LOC_REGPARM: + case LOC_REGPARM_ADDR: + case LOC_BASEREG_ARG: + case LOC_COMPUTED_ARG: + arg_sym = sym; + break; + case LOC_UNRESOLVED: + continue; + default: + found_sym = 1; + add_defn_to_vec (obstackp, + fixup_symbol_section (sym, objfile), + block, symtab); + break; + } + } + } } else { ALL_BLOCK_SYMBOLS (block, iter, sym) - { - if (SYMBOL_DOMAIN (sym) == domain) - { - int cmp = strncmp (name, DEPRECATED_SYMBOL_NAME (sym), name_len); - - if (cmp == 0 - && is_name_suffix (DEPRECATED_SYMBOL_NAME (sym) + name_len)) - { - switch (SYMBOL_CLASS (sym)) - { - case LOC_ARG: - case LOC_LOCAL_ARG: - case LOC_REF_ARG: - case LOC_REGPARM: - case LOC_REGPARM_ADDR: - case LOC_BASEREG_ARG: - case LOC_COMPUTED_ARG: - arg_sym = sym; - break; - case LOC_UNRESOLVED: - break; - default: - found_sym = 1; - fill_in_ada_prototype (sym); - add_defn_to_vec (fixup_symbol_section (sym, objfile), - block); - break; - } - } - } - } + { + if (SYMBOL_DOMAIN (sym) == domain) + { + int cmp = strncmp (name, SYMBOL_LINKAGE_NAME (sym), name_len); + if (cmp == 0 + && is_name_suffix (SYMBOL_LINKAGE_NAME (sym) + name_len)) + { + switch (SYMBOL_CLASS (sym)) + { + case LOC_ARG: + case LOC_LOCAL_ARG: + case LOC_REF_ARG: + case LOC_REGPARM: + case LOC_REGPARM_ADDR: + case LOC_BASEREG_ARG: + case LOC_COMPUTED_ARG: + arg_sym = sym; + break; + case LOC_UNRESOLVED: + break; + default: + found_sym = 1; + add_defn_to_vec (obstackp, + fixup_symbol_section (sym, objfile), + block, symtab); + break; + } + } + } + } } if (!found_sym && arg_sym != NULL) { - fill_in_ada_prototype (arg_sym); - add_defn_to_vec (fixup_symbol_section (arg_sym, objfile), block); + add_defn_to_vec (obstackp, + fixup_symbol_section (arg_sym, objfile), + block, symtab); } if (!wild) @@ -4042,16 +5267,17 @@ ada_add_block_symbols (struct block *block, const char *name, { int cmp; - cmp = (int) '_' - (int) DEPRECATED_SYMBOL_NAME (sym)[0]; + cmp = (int) '_' - (int) SYMBOL_LINKAGE_NAME (sym)[0]; if (cmp == 0) { - cmp = strncmp ("_ada_", DEPRECATED_SYMBOL_NAME (sym), 5); + cmp = strncmp ("_ada_", SYMBOL_LINKAGE_NAME (sym), 5); if (cmp == 0) - cmp = strncmp (name, DEPRECATED_SYMBOL_NAME (sym) + 5, name_len); + cmp = strncmp (name, SYMBOL_LINKAGE_NAME (sym) + 5, + name_len); } if (cmp == 0 - && is_name_suffix (DEPRECATED_SYMBOL_NAME (sym) + name_len + 5)) + && is_name_suffix (SYMBOL_LINKAGE_NAME (sym) + name_len + 5)) { switch (SYMBOL_CLASS (sym)) { @@ -4068,136 +5294,41 @@ ada_add_block_symbols (struct block *block, const char *name, break; default: found_sym = 1; - fill_in_ada_prototype (sym); - add_defn_to_vec (fixup_symbol_section (sym, objfile), - block); + add_defn_to_vec (obstackp, + fixup_symbol_section (sym, objfile), + block, symtab); break; } } } + end_loop2: ; } /* NOTE: This really shouldn't be needed for _ada_ symbols. - They aren't parameters, right? */ + They aren't parameters, right? */ if (!found_sym && arg_sym != NULL) - { - fill_in_ada_prototype (arg_sym); - add_defn_to_vec (fixup_symbol_section (arg_sym, objfile), block); - } + { + add_defn_to_vec (obstackp, + fixup_symbol_section (arg_sym, objfile), + block, symtab); + } } } + /* Breakpoint-related */ - /* Function Types */ - -/* Assuming that SYM is the symbol for a function, fill in its type - with prototype information, if it is not already there. */ - -static void -fill_in_ada_prototype (struct symbol *func) -{ - struct block *b; - int nargs, nsyms; - struct dict_iterator iter; - struct type *ftype; - struct type *rtype; - size_t max_fields; - struct symbol *sym; - - if (func == NULL - || TYPE_CODE (SYMBOL_TYPE (func)) != TYPE_CODE_FUNC - || TYPE_FIELDS (SYMBOL_TYPE (func)) != NULL) - return; - - /* We make each function type unique, so that each may have its own */ - /* parameter types. This particular way of doing so wastes space: */ - /* it would be nicer to build the argument types while the original */ - /* function type is being built (FIXME). */ - rtype = check_typedef (TYPE_TARGET_TYPE (SYMBOL_TYPE (func))); - ftype = alloc_type (TYPE_OBJFILE (SYMBOL_TYPE (func))); - make_function_type (rtype, &ftype); - SYMBOL_TYPE (func) = ftype; - - b = SYMBOL_BLOCK_VALUE (func); - - nargs = 0; - max_fields = 8; - TYPE_FIELDS (ftype) = - (struct field *) xmalloc (sizeof (struct field) * max_fields); - ALL_BLOCK_SYMBOLS (b, iter, sym) - { - GROW_VECT (TYPE_FIELDS (ftype), max_fields, nargs + 1); - - switch (SYMBOL_CLASS (sym)) - { - case LOC_REF_ARG: - case LOC_REGPARM_ADDR: - TYPE_FIELD_BITPOS (ftype, nargs) = nargs; - TYPE_FIELD_BITSIZE (ftype, nargs) = 0; - TYPE_FIELD_STATIC_KIND (ftype, nargs) = 0; - TYPE_FIELD_TYPE (ftype, nargs) = - lookup_pointer_type (check_typedef (SYMBOL_TYPE (sym))); - TYPE_FIELD_NAME (ftype, nargs) = DEPRECATED_SYMBOL_NAME (sym); - nargs += 1; - - break; - - case LOC_ARG: - case LOC_REGPARM: - case LOC_LOCAL_ARG: - case LOC_BASEREG_ARG: - case LOC_COMPUTED_ARG: - TYPE_FIELD_BITPOS (ftype, nargs) = nargs; - TYPE_FIELD_BITSIZE (ftype, nargs) = 0; - TYPE_FIELD_STATIC_KIND (ftype, nargs) = 0; - TYPE_FIELD_TYPE (ftype, nargs) = check_typedef (SYMBOL_TYPE (sym)); - TYPE_FIELD_NAME (ftype, nargs) = DEPRECATED_SYMBOL_NAME (sym); - nargs += 1; - - break; - - default: - break; - } - } - - /* Re-allocate fields vector; if there are no fields, make the */ - /* fields pointer non-null anyway, to mark that this function type */ - /* has been filled in. */ - - TYPE_NFIELDS (ftype) = nargs; - if (nargs == 0) - { - static struct field dummy_field = { 0, 0, 0, 0 }; - xfree (TYPE_FIELDS (ftype)); - TYPE_FIELDS (ftype) = &dummy_field; - } - else - { - struct field *fields = - (struct field *) TYPE_ALLOC (ftype, nargs * sizeof (struct field)); - memcpy ((char *) fields, - (char *) TYPE_FIELDS (ftype), nargs * sizeof (struct field)); - xfree (TYPE_FIELDS (ftype)); - TYPE_FIELDS (ftype) = fields; - } -} - - - /* Breakpoint-related */ - -char no_symtab_msg[] = - "No symbol table is loaded. Use the \"file\" command."; +/* Import message from symtab.c. */ +extern char no_symtab_msg[]; /* Assuming that LINE is pointing at the beginning of an argument to 'break', return a pointer to the delimiter for the initial segment - of that name. This is the first ':', ' ', or end of LINE. -*/ + of that name. This is the first ':', ' ', or end of LINE. */ + char * ada_start_decode_line_1 (char *line) { - /* [NOTE: strpbrk would be more elegant, but I am reluctant to be - the first to use such a library function in GDB code.] */ + /* NOTE: strpbrk would be more elegant, but I am reluctant to be + the first to use such a library function in GDB code. */ char *p; for (p = line; *p != '\000' && *p != ' ' && *p != ':'; p += 1) ; @@ -4208,33 +5339,32 @@ ada_start_decode_line_1 (char *line) command), following any initial file name specification. Return all symbol table/line specfications (sals) consistent with the - information in *SPEC and FILE_TABLE in the - following sense: + information in *SPEC and FILE_TABLE in the following sense: + FILE_TABLE is null, or the sal refers to a line in the file named by FILE_TABLE. + If *SPEC points to an argument with a trailing ':LINENUM', - then the sal refers to that line (or one following it as closely as + then the sal refers to that line (or one following it as closely as possible). - + If *SPEC does not start with '*', the sal is in a function with + + If *SPEC does not start with '*', the sal is in a function with that name. Returns with 0 elements if no matching non-minimal symbols found. If *SPEC begins with a function name of the form <NAME>, then NAME is taken as a literal name; otherwise the function name is subject - to the usual mangling. + to the usual encoding. *SPEC is updated to point after the function/line number specification. FUNFIRSTLINE is non-zero if we desire the first line of real code - in each function (this is ignored in the presence of a LINENUM spec.). + in each function. If CANONICAL is non-NULL, and if any of the sals require a 'canonical line spec', then *CANONICAL is set to point to an array of strings, corresponding to and equal in length to the returned - list of sals, such that (*CANONICAL)[i] is non-null and contains a - canonical line spec for the ith returned sal, if needed. If no - canonical line specs are required and CANONICAL is non-null, + list of sals, such that (*CANONICAL)[i] is non-null and contains a + canonical line spec for the ith returned sal, if needed. If no + canonical line specs are required and CANONICAL is non-null, *CANONICAL is set to NULL. A 'canonical line spec' is simply a name (in the format of the @@ -4242,43 +5372,48 @@ ada_start_decode_line_1 (char *line) with no further contextual information or user selection. It is needed whenever the file name, function name, and line number information supplied is insufficient for this unique - identification. Currently overloaded functions, the name '*', + identification. Currently overloaded functions, the name '*', or static functions without a filename yield a canonical line spec. The array and the line spec strings are allocated on the heap; it - is the caller's responsibility to free them. */ + is the caller's responsibility to free them. */ struct symtabs_and_lines ada_finish_decode_line_1 (char **spec, struct symtab *file_table, - int funfirstline, char ***canonical) + int funfirstline, char ***canonical) { - struct symbol **symbols; - struct block **blocks; - struct block *block; + struct ada_symbol_info *symbols; + const struct block *block; int n_matches, i, line_num; struct symtabs_and_lines selected; struct cleanup *old_chain = make_cleanup (null_cleanup, NULL); char *name; + int is_quoted; int len; char *lower_name; char *unquoted_name; - if (file_table == NULL) - block = get_selected_block (NULL); + if (file_table == NULL) + block = block_static_block (get_selected_block (0)); else block = BLOCKVECTOR_BLOCK (BLOCKVECTOR (file_table), STATIC_BLOCK); if (canonical != NULL) *canonical = (char **) NULL; + is_quoted = (**spec && strchr (get_gdb_completer_quote_characters (), + **spec) != NULL); + name = *spec; if (**spec == '*') *spec += 1; else { + if (is_quoted) + *spec = skip_quoted (*spec); while (**spec != '\000' && - !strchr (ada_completer_word_break_characters, **spec)) - *spec += 1; + !strchr (ada_completer_word_break_characters, **spec)) + *spec += 1; } len = *spec - name; @@ -4287,15 +5422,16 @@ ada_finish_decode_line_1 (char **spec, struct symtab *file_table, { line_num = strtol (*spec + 1, spec, 10); while (**spec == ' ' || **spec == '\t') - *spec += 1; + *spec += 1; } if (name[0] == '*') { if (line_num == -1) - error ("Wild-card function with no line number or file name."); + error ("Wild-card function with no line number or file name."); - return all_sals_for_line (file_table->filename, line_num, canonical); + return ada_sals_for_line (file_table->filename, line_num, + funfirstline, canonical, 0); } if (name[0] == '\'') @@ -4318,17 +5454,17 @@ ada_finish_decode_line_1 (char **spec, struct symtab *file_table, unquoted_name[len] = '\000'; lower_name = (char *) alloca (len + 1); for (i = 0; i < len; i += 1) - lower_name[i] = tolower (name[i]); + lower_name[i] = tolower (name[i]); lower_name[len] = '\000'; } n_matches = 0; if (lower_name != NULL) - n_matches = ada_lookup_symbol_list (ada_mangle (lower_name), block, - VAR_DOMAIN, &symbols, &blocks); + n_matches = ada_lookup_symbol_list (ada_encode (lower_name), block, + VAR_DOMAIN, &symbols); if (n_matches == 0) n_matches = ada_lookup_symbol_list (unquoted_name, block, - VAR_DOMAIN, &symbols, &blocks); + VAR_DOMAIN, &symbols); if (n_matches == 0 && line_num >= 0) error ("No line number information found for %s.", unquoted_name); else if (n_matches == 0) @@ -4337,7 +5473,7 @@ ada_finish_decode_line_1 (char **spec, struct symtab *file_table, /* FIXME: See comment in symtab.c::decode_line_1 */ #undef volatile volatile struct symtab_and_line val; -#define volatile /*nothing */ +#define volatile /*nothing */ #else struct symtab_and_line val; #endif @@ -4347,43 +5483,46 @@ ada_finish_decode_line_1 (char **spec, struct symtab *file_table, msymbol = NULL; if (lower_name != NULL) - msymbol = ada_lookup_minimal_symbol (ada_mangle (lower_name)); + msymbol = ada_lookup_simple_minsym (ada_encode (lower_name)); if (msymbol == NULL) - msymbol = ada_lookup_minimal_symbol (unquoted_name); + msymbol = ada_lookup_simple_minsym (unquoted_name); if (msymbol != NULL) - { - val.pc = SYMBOL_VALUE_ADDRESS (msymbol); - val.section = SYMBOL_BFD_SECTION (msymbol); - if (funfirstline) - { - val.pc += FUNCTION_START_OFFSET; - SKIP_PROLOGUE (val.pc); - } - selected.sals = (struct symtab_and_line *) - xmalloc (sizeof (struct symtab_and_line)); - selected.sals[0] = val; - selected.nelts = 1; - return selected; - } + { + val.pc = SYMBOL_VALUE_ADDRESS (msymbol); + val.section = SYMBOL_BFD_SECTION (msymbol); + if (funfirstline) + { + val.pc += FUNCTION_START_OFFSET; + SKIP_PROLOGUE (val.pc); + } + selected.sals = (struct symtab_and_line *) + xmalloc (sizeof (struct symtab_and_line)); + selected.sals[0] = val; + selected.nelts = 1; + return selected; + } if (!have_full_symbols () && - !have_partial_symbols () && !have_minimal_symbols ()) - error (no_symtab_msg); + !have_partial_symbols () && !have_minimal_symbols ()) + error ("No symbol table is loaded. Use the \"file\" command."); error ("Function \"%s\" not defined.", unquoted_name); - return selected; /* for lint */ + return selected; /* for lint */ } if (line_num >= 0) { - return - find_sal_from_funcs_and_line (file_table->filename, line_num, - symbols, n_matches); + struct symtabs_and_lines best_sal = + find_sal_from_funcs_and_line (file_table->filename, line_num, + symbols, n_matches); + if (funfirstline) + adjust_pc_past_prologue (&best_sal.sals[0].pc); + return best_sal; } else { selected.nelts = - user_select_syms (symbols, blocks, n_matches, n_matches); + user_select_syms (symbols, n_matches, n_matches); } selected.sals = (struct symtab_and_line *) @@ -4394,23 +5533,25 @@ ada_finish_decode_line_1 (char **spec, struct symtab *file_table, i = 0; while (i < selected.nelts) { - if (SYMBOL_CLASS (symbols[i]) == LOC_BLOCK) - selected.sals[i] = find_function_start_sal (symbols[i], funfirstline); - else if (SYMBOL_LINE (symbols[i]) != 0) - { - selected.sals[i].symtab = symtab_for_sym (symbols[i]); - selected.sals[i].line = SYMBOL_LINE (symbols[i]); - } + if (SYMBOL_CLASS (symbols[i].sym) == LOC_BLOCK) + selected.sals[i] + = find_function_start_sal (symbols[i].sym, funfirstline); + else if (SYMBOL_LINE (symbols[i].sym) != 0) + { + selected.sals[i].symtab = + symbols[i].symtab + ? symbols[i].symtab : symtab_for_sym (symbols[i].sym); + selected.sals[i].line = SYMBOL_LINE (symbols[i].sym); + } else if (line_num >= 0) - { - /* Ignore this choice */ - symbols[i] = symbols[selected.nelts - 1]; - blocks[i] = blocks[selected.nelts - 1]; - selected.nelts -= 1; - continue; - } + { + /* Ignore this choice */ + symbols[i] = symbols[selected.nelts - 1]; + selected.nelts -= 1; + continue; + } else - error ("Line number not known for symbol \"%s\"", unquoted_name); + error ("Line number not known for symbol \"%s\"", unquoted_name); i += 1; } @@ -4418,9 +5559,9 @@ ada_finish_decode_line_1 (char **spec, struct symtab *file_table, { *canonical = (char **) xmalloc (sizeof (char *) * selected.nelts); for (i = 0; i < selected.nelts; i += 1) - (*canonical)[i] = - extended_canonical_line_spec (selected.sals[i], - SYMBOL_PRINT_NAME (symbols[i])); + (*canonical)[i] = + extended_canonical_line_spec (selected.sals[i], + SYMBOL_PRINT_NAME (symbols[i].sym)); } discard_cleanups (old_chain); @@ -4428,11 +5569,12 @@ ada_finish_decode_line_1 (char **spec, struct symtab *file_table, } /* The (single) sal corresponding to line LINE_NUM in a symbol table - with file name FILENAME that occurs in one of the functions listed - in SYMBOLS[0 .. NSYMS-1]. */ + with file name FILENAME that occurs in one of the functions listed + in the symbol fields of SYMBOLS[0 .. NSYMS-1]. */ + static struct symtabs_and_lines find_sal_from_funcs_and_line (const char *filename, int line_num, - struct symbol **symbols, int nsyms) + struct ada_symbol_info *symbols, int nsyms) { struct symtabs_and_lines sals; int best_index, best; @@ -4454,26 +5596,26 @@ find_sal_from_funcs_and_line (const char *filename, int line_num, QUIT; - if (!DEPRECATED_STREQ (filename, s->filename)) + if (strcmp (filename, s->filename) != 0) continue; l = LINETABLE (s); ind = find_line_in_linetable (l, line_num, symbols, nsyms, &exact); if (ind >= 0) { - if (exact) - { - best_index = ind; - best_linetable = l; - best_symtab = s; - goto done; - } - if (best == 0 || l->item[ind].line < best) - { - best = l->item[ind].line; - best_index = ind; - best_linetable = l; - best_symtab = s; - } + if (exact) + { + best_index = ind; + best_linetable = l; + best_symtab = s; + goto done; + } + if (best == 0 || l->item[ind].line < best) + { + best = l->item[ind].line; + best_index = ind; + best_linetable = l; + best_symtab = s; + } } } @@ -4495,11 +5637,13 @@ done: } /* Return the index in LINETABLE of the best match for LINE_NUM whose - pc falls within one of the functions denoted by SYMBOLS[0..NSYMS-1]. - Set *EXACTP to the 1 if the match is exact, and 0 otherwise. */ + pc falls within one of the functions denoted by the symbol fields + of SYMBOLS[0..NSYMS-1]. Set *EXACTP to 1 if the match is exact, + and 0 otherwise. */ + static int find_line_in_linetable (struct linetable *linetable, int line_num, - struct symbol **symbols, int nsyms, int *exactp) + struct ada_symbol_info *symbols, int nsyms, int *exactp) { int i, len, best_index, best; @@ -4513,27 +5657,28 @@ find_line_in_linetable (struct linetable *linetable, int line_num, struct linetable_entry *item = &(linetable->item[i]); for (k = 0; k < nsyms; k += 1) - { - if (symbols[k] != NULL && SYMBOL_CLASS (symbols[k]) == LOC_BLOCK - && item->pc >= BLOCK_START (SYMBOL_BLOCK_VALUE (symbols[k])) - && item->pc < BLOCK_END (SYMBOL_BLOCK_VALUE (symbols[k]))) - goto candidate; - } + { + if (symbols[k].sym != NULL + && SYMBOL_CLASS (symbols[k].sym) == LOC_BLOCK + && item->pc >= BLOCK_START (SYMBOL_BLOCK_VALUE (symbols[k].sym)) + && item->pc < BLOCK_END (SYMBOL_BLOCK_VALUE (symbols[k].sym))) + goto candidate; + } continue; candidate: if (item->line == line_num) - { - *exactp = 1; - return i; - } + { + *exactp = 1; + return i; + } if (item->line > line_num && (best == 0 || item->line < best)) - { - best = item->line; - best_index = i; - } + { + best = item->line; + best_index = i; + } } *exactp = 0; @@ -4542,7 +5687,8 @@ find_line_in_linetable (struct linetable *linetable, int line_num, /* Find the smallest k >= LINE_NUM such that k is a line number in LINETABLE, and k falls strictly within a named function that begins at - or before LINE_NUM. Return -1 if there is no such k. */ + or before LINE_NUM. Return -1 if there is no such k. */ + static int nearest_line_number_in_linetable (struct linetable *linetable, int line_num) { @@ -4556,37 +5702,36 @@ nearest_line_number_in_linetable (struct linetable *linetable, int line_num) best = INT_MAX; while (i < len) { - int k; struct linetable_entry *item = &(linetable->item[i]); if (item->line >= line_num && item->line < best) - { - char *func_name; - CORE_ADDR start, end; - - func_name = NULL; - find_pc_partial_function (item->pc, &func_name, &start, &end); - - if (func_name != NULL && item->pc < end) - { - if (item->line == line_num) - return line_num; - else - { - struct symbol *sym = - standard_lookup (func_name, VAR_DOMAIN); - if (is_plausible_func_for_line (sym, line_num)) - best = item->line; - else - { - do - i += 1; - while (i < len && linetable->item[i].pc < end); - continue; - } - } - } - } + { + char *func_name; + CORE_ADDR start, end; + + func_name = NULL; + find_pc_partial_function (item->pc, &func_name, &start, &end); + + if (func_name != NULL && item->pc < end) + { + if (item->line == line_num) + return line_num; + else + { + struct symbol *sym = + standard_lookup (func_name, NULL, VAR_DOMAIN); + if (is_plausible_func_for_line (sym, line_num)) + best = item->line; + else + { + do + i += 1; + while (i < len && linetable->item[i].pc < end); + continue; + } + } + } + } i += 1; } @@ -4595,17 +5740,17 @@ nearest_line_number_in_linetable (struct linetable *linetable, int line_num) } -/* Return the next higher index, k, into LINETABLE such that k > IND, +/* Return the next higher index, k, into LINETABLE such that k > IND, entry k in LINETABLE has a line number equal to LINE_NUM, k - corresponds to a PC that is in a function different from that + corresponds to a PC that is in a function different from that corresponding to IND, and falls strictly within a named function - that begins at a line at or preceding STARTING_LINE. - Return -1 if there is no such k. - IND == -1 corresponds to no function. */ + that begins at a line at or preceding STARTING_LINE. + Return -1 if there is no such k. + IND == -1 corresponds to no function. */ static int find_next_line_in_linetable (struct linetable *linetable, int line_num, - int starting_line, int ind) + int starting_line, int ind) { int i, len; @@ -4618,13 +5763,13 @@ find_next_line_in_linetable (struct linetable *linetable, int line_num, CORE_ADDR start, end; if (find_pc_partial_function (linetable->item[ind].pc, - (char **) NULL, &start, &end)) - { - while (ind < len && linetable->item[ind].pc < end) - ind += 1; - } + (char **) NULL, &start, &end)) + { + while (ind < len && linetable->item[ind].pc < end) + ind += 1; + } else - ind += 1; + ind += 1; } else ind = 0; @@ -4632,33 +5777,32 @@ find_next_line_in_linetable (struct linetable *linetable, int line_num, i = ind; while (i < len) { - int k; struct linetable_entry *item = &(linetable->item[i]); if (item->line >= line_num) - { - char *func_name; - CORE_ADDR start, end; - - func_name = NULL; - find_pc_partial_function (item->pc, &func_name, &start, &end); - - if (func_name != NULL && item->pc < end) - { - if (item->line == line_num) - { - struct symbol *sym = - standard_lookup (func_name, VAR_DOMAIN); - if (is_plausible_func_for_line (sym, starting_line)) - return i; - else - { - while ((i + 1) < len && linetable->item[i + 1].pc < end) - i += 1; - } - } - } - } + { + char *func_name; + CORE_ADDR start, end; + + func_name = NULL; + find_pc_partial_function (item->pc, &func_name, &start, &end); + + if (func_name != NULL && item->pc < end) + { + if (item->line == line_num) + { + struct symbol *sym = + standard_lookup (func_name, NULL, VAR_DOMAIN); + if (is_plausible_func_for_line (sym, starting_line)) + return i; + else + { + while ((i + 1) < len && linetable->item[i + 1].pc < end) + i += 1; + } + } + } + } i += 1; } @@ -4666,7 +5810,8 @@ find_next_line_in_linetable (struct linetable *linetable, int line_num, } /* True iff function symbol SYM starts somewhere at or before line # - LINE_NUM. */ + LINE_NUM. */ + static int is_plausible_func_for_line (struct symbol *sym, int line_num) { @@ -4680,68 +5825,9 @@ is_plausible_func_for_line (struct symbol *sym, int line_num) return (start_sal.line != 0 && line_num >= start_sal.line); } -static void -debug_print_lines (struct linetable *lt) -{ - int i; - - if (lt == NULL) - return; - - fprintf (stderr, "\t"); - for (i = 0; i < lt->nitems; i += 1) - fprintf (stderr, "(%d->%p) ", lt->item[i].line, (void *) lt->item[i].pc); - fprintf (stderr, "\n"); -} - -static void -debug_print_block (struct block *b) -{ - struct dict_iterator iter; - struct symbol *sym; - - fprintf (stderr, "Block: %p; [0x%lx, 0x%lx]", - b, BLOCK_START (b), BLOCK_END (b)); - if (BLOCK_FUNCTION (b) != NULL) - fprintf (stderr, " Function: %s", DEPRECATED_SYMBOL_NAME (BLOCK_FUNCTION (b))); - fprintf (stderr, "\n"); - fprintf (stderr, "\t Superblock: %p\n", BLOCK_SUPERBLOCK (b)); - fprintf (stderr, "\t Symbols:"); - ALL_BLOCK_SYMBOLS (b, iter, sym) - { - fprintf (stderr, " %s", DEPRECATED_SYMBOL_NAME (sym)); - } - fprintf (stderr, "\n"); -} - -static void -debug_print_blocks (struct blockvector *bv) -{ - int i; - - if (bv == NULL) - return; - for (i = 0; i < BLOCKVECTOR_NBLOCKS (bv); i += 1) - { - fprintf (stderr, "%6d. ", i); - debug_print_block (BLOCKVECTOR_BLOCK (bv, i)); - } -} - -static void -debug_print_symtab (struct symtab *s) -{ - fprintf (stderr, "Symtab %p\n File: %s; Dir: %s\n", s, - s->filename, s->dirname); - fprintf (stderr, " Blockvector: %p, Primary: %d\n", - BLOCKVECTOR (s), s->primary); - debug_print_blocks (BLOCKVECTOR (s)); - fprintf (stderr, " Line table: %p\n", LINETABLE (s)); - debug_print_lines (LINETABLE (s)); -} - /* Read in all symbol tables corresponding to partial symbol tables - with file name FILENAME. */ + with file name FILENAME. */ + static void read_all_symtabs (const char *filename) { @@ -4752,16 +5838,25 @@ read_all_symtabs (const char *filename) { QUIT; - if (DEPRECATED_STREQ (filename, ps->filename)) + if (strcmp (filename, ps->filename) == 0) PSYMTAB_TO_SYMTAB (ps); } } /* All sals corresponding to line LINE_NUM in a symbol table from file - FILENAME, as filtered by the user. If CANONICAL is not null, set - it to a corresponding array of canonical line specs. */ -static struct symtabs_and_lines -all_sals_for_line (const char *filename, int line_num, char ***canonical) + FILENAME, as filtered by the user. Filter out any lines that + reside in functions with "suppressed" names (not corresponding to + explicit Ada functions), if there is at least one in a function + with a non-suppressed name. If CANONICAL is not null, set + it to a corresponding array of canonical line specs. + If ONE_LOCATION_ONLY is set and several matches are found for + the given location, then automatically select the first match found + instead of asking the user which instance should be returned. */ + +struct symtabs_and_lines +ada_sals_for_line (const char *filename, int line_num, + int funfirstline, char ***canonical, + int one_location_only) { struct symtabs_and_lines result; struct objfile *objfile; @@ -4783,7 +5878,7 @@ all_sals_for_line (const char *filename, int line_num, char ***canonical) QUIT; - if (!DEPRECATED_STREQ (s->filename, filename)) + if (strcmp (s->filename, filename) != 0) continue; target_line_num = @@ -4794,82 +5889,119 @@ all_sals_for_line (const char *filename, int line_num, char ***canonical) ind = -1; while (1) { - ind = - find_next_line_in_linetable (LINETABLE (s), - target_line_num, line_num, ind); + ind = + find_next_line_in_linetable (LINETABLE (s), + target_line_num, line_num, ind); - if (ind < 0) - break; + if (ind < 0) + break; + + GROW_VECT (result.sals, len, result.nelts + 1); + init_sal (&result.sals[result.nelts]); + result.sals[result.nelts].line = line_num; + result.sals[result.nelts].pc = LINETABLE (s)->item[ind].pc; + result.sals[result.nelts].symtab = s; - GROW_VECT (result.sals, len, result.nelts + 1); - init_sal (&result.sals[result.nelts]); - result.sals[result.nelts].line = LINETABLE (s)->item[ind].line; - result.sals[result.nelts].pc = LINETABLE (s)->item[ind].pc; - result.sals[result.nelts].symtab = s; - result.nelts += 1; + if (funfirstline) + adjust_pc_past_prologue (&result.sals[result.nelts].pc); + + result.nelts += 1; } } if (canonical != NULL || result.nelts > 1) { - int k; + int k, j, n; char **func_names = (char **) alloca (result.nelts * sizeof (char *)); int first_choice = (result.nelts > 1) ? 2 : 1; - int n; int *choices = (int *) alloca (result.nelts * sizeof (int)); for (k = 0; k < result.nelts; k += 1) - { - find_pc_partial_function (result.sals[k].pc, &func_names[k], - (CORE_ADDR *) NULL, (CORE_ADDR *) NULL); - if (func_names[k] == NULL) - error ("Could not find function for one or more breakpoints."); - } + { + find_pc_partial_function (result.sals[k].pc, &func_names[k], + (CORE_ADDR *) NULL, (CORE_ADDR *) NULL); + if (func_names[k] == NULL) + error ("Could not find function for one or more breakpoints."); + } + + /* Remove suppressed names, unless all are suppressed. */ + for (j = 0; j < result.nelts; j += 1) + if (!is_suppressed_name (func_names[j])) + { + /* At least one name is unsuppressed, so remove all + suppressed names. */ + for (k = n = 0; k < result.nelts; k += 1) + if (!is_suppressed_name (func_names[k])) + { + func_names[n] = func_names[k]; + result.sals[n] = result.sals[k]; + n += 1; + } + result.nelts = n; + break; + } if (result.nelts > 1) - { - printf_unfiltered ("[0] cancel\n"); - if (result.nelts > 1) - printf_unfiltered ("[1] all\n"); - for (k = 0; k < result.nelts; k += 1) - printf_unfiltered ("[%d] %s\n", k + first_choice, - ada_demangle (func_names[k])); - - n = get_selections (choices, result.nelts, result.nelts, - result.nelts > 1, "instance-choice"); - - for (k = 0; k < n; k += 1) - { - result.sals[k] = result.sals[choices[k]]; - func_names[k] = func_names[choices[k]]; - } - result.nelts = n; - } - - if (canonical != NULL) - { - *canonical = (char **) xmalloc (result.nelts * sizeof (char **)); - make_cleanup (xfree, *canonical); - for (k = 0; k < result.nelts; k += 1) - { - (*canonical)[k] = - extended_canonical_line_spec (result.sals[k], func_names[k]); - if ((*canonical)[k] == NULL) - error ("Could not locate one or more breakpoints."); - make_cleanup (xfree, (*canonical)[k]); - } - } + { + if (one_location_only) + { + /* Automatically select the first of all possible choices. */ + n = 1; + choices[0] = 0; + } + else + { + printf_unfiltered ("[0] cancel\n"); + if (result.nelts > 1) + printf_unfiltered ("[1] all\n"); + for (k = 0; k < result.nelts; k += 1) + printf_unfiltered ("[%d] %s\n", k + first_choice, + ada_decode (func_names[k])); + + n = get_selections (choices, result.nelts, result.nelts, + result.nelts > 1, "instance-choice"); + } + + for (k = 0; k < n; k += 1) + { + result.sals[k] = result.sals[choices[k]]; + func_names[k] = func_names[choices[k]]; + } + result.nelts = n; + } + + if (canonical != NULL && result.nelts == 0) + *canonical = NULL; + else if (canonical != NULL) + { + *canonical = (char **) xmalloc (result.nelts * sizeof (char **)); + make_cleanup (xfree, *canonical); + for (k = 0; k < result.nelts; k += 1) + { + (*canonical)[k] = + extended_canonical_line_spec (result.sals[k], func_names[k]); + if ((*canonical)[k] == NULL) + error ("Could not locate one or more breakpoints."); + make_cleanup (xfree, (*canonical)[k]); + } + } + } + + if (result.nelts == 0) + { + do_cleanups (old_chain); + result.sals = NULL; } - - discard_cleanups (old_chain); + else + discard_cleanups (old_chain); return result; } /* A canonical line specification of the form FILE:NAME:LINENUM for symbol table and line data SAL. NULL if insufficient - information. The caller is responsible for releasing any space - allocated. */ + information. The caller is responsible for releasing any space + allocated. */ static char * extended_canonical_line_spec (struct symtab_and_line sal, const char *name) @@ -4880,161 +6012,302 @@ extended_canonical_line_spec (struct symtab_and_line sal, const char *name) return NULL; r = (char *) xmalloc (strlen (name) + strlen (sal.symtab->filename) - + sizeof (sal.line) * 3 + 3); + + sizeof (sal.line) * 3 + 3); sprintf (r, "%s:'%s':%d", sal.symtab->filename, name, sal.line); return r; } -#if 0 -int begin_bnum = -1; -#endif -int begin_annotate_level = 0; +/* If the main procedure is written in Ada, then return its name. + The result is good until the next call. Return NULL if the main + procedure doesn't appear to be in Ada. */ -static void -begin_cleanup (void *dummy) -{ - begin_annotate_level = 0; -} - -static void -begin_command (char *args, int from_tty) +char * +ada_main_name (void) { struct minimal_symbol *msym; CORE_ADDR main_program_name_addr; - char main_program_name[1024]; - struct cleanup *old_chain = make_cleanup (begin_cleanup, NULL); - begin_annotate_level = 2; - - /* Check that there is a program to debug */ - if (!have_full_symbols () && !have_partial_symbols ()) - error ("No symbol table is loaded. Use the \"file\" command."); - - /* Check that we are debugging an Ada program */ - /* if (ada_update_initial_language (language_unknown, NULL) != language_ada) - error ("Cannot find the Ada initialization procedure. Is this an Ada main program?"); - */ - /* FIXME: language_ada should be defined in defs.h */ - - /* Get the address of the name of the main procedure */ + static char main_program_name[1024]; + /* For Ada, the name of the main procedure is stored in a specific + string constant, generated by the binder. Look for that symbol, + extract its address, and then read that string. If we didn't find + that string, then most probably the main procedure is not written + in Ada. */ msym = lookup_minimal_symbol (ADA_MAIN_PROGRAM_SYMBOL_NAME, NULL, NULL); if (msym != NULL) { main_program_name_addr = SYMBOL_VALUE_ADDRESS (msym); if (main_program_name_addr == 0) - error ("Invalid address for Ada main program name."); + error ("Invalid address for Ada main program name."); - /* Read the name of the main procedure */ extract_string (main_program_name_addr, main_program_name); + return main_program_name; + } + + /* The main procedure doesn't seem to be in Ada. */ + return NULL; +} + +/* Return type of Ada breakpoint associated with bp_stat: + 0 if not an Ada-specific breakpoint, 1 for break on specific exception, + 2 for break on unhandled exception, 3 for assert. */ + +static int +ada_exception_breakpoint_type (bpstat bs) +{ +#ifdef GNAT_GDB + return ((! bs || ! bs->breakpoint_at) ? 0 + : bs->breakpoint_at->break_on_exception); +#else + return 0; +#endif +} + +/* True iff FRAME is very likely to be that of a function that is + part of the runtime system. This is all very heuristic, but is + intended to be used as advice as to what frames are uninteresting + to most users. */ + +static int +is_known_support_routine (struct frame_info *frame) +{ + struct frame_info *next_frame = get_next_frame (frame); + /* If frame is not innermost, that normally means that frame->pc + points to *after* the call instruction, and we want to get the line + containing the call, never the next line. But if the next frame is + a signal_handler_caller or a dummy frame, then the next frame was + not entered as the result of a call, and we want to get the line + containing frame->pc. */ + const int pc_is_after_call = + next_frame != NULL + && get_frame_type (next_frame) != SIGTRAMP_FRAME + && get_frame_type (next_frame) != DUMMY_FRAME; + struct symtab_and_line sal + = find_pc_line (get_frame_pc (frame), pc_is_after_call); + char *func_name; + int i; + struct stat st; + + /* The heuristic: + 1. The symtab is null (indicating no debugging symbols) + 2. The symtab's filename does not exist. + 3. The object file's name is one of the standard libraries. + 4. The symtab's file name has the form of an Ada library source file. + 5. The function at frame's PC has a GNAT-compiler-generated name. */ + + if (sal.symtab == NULL) + return 1; + + /* On some systems (e.g. VxWorks), the kernel contains debugging + symbols; in this case, the filename referenced by these symbols + does not exists. */ - /* Put a temporary breakpoint in the Ada main program and run */ - do_command ("tbreak ", main_program_name, 0); - do_command ("run ", args, 0); + if (stat (sal.symtab->filename, &st)) + return 1; + + for (i = 0; known_runtime_file_name_patterns[i] != NULL; i += 1) + { + re_comp (known_runtime_file_name_patterns[i]); + if (re_exec (sal.symtab->filename)) + return 1; } + if (sal.symtab->objfile != NULL) + { + for (i = 0; known_runtime_file_name_patterns[i] != NULL; i += 1) + { + re_comp (known_runtime_file_name_patterns[i]); + if (re_exec (sal.symtab->objfile->name)) + return 1; + } + } + + /* If the frame PC points after the call instruction, then we need to + decrement it in order to search for the function associated to this + PC. Otherwise, if the associated call was the last instruction of + the function, we might either find the wrong function or even fail + during the function name lookup. */ + if (pc_is_after_call) + func_name = function_name_from_pc (get_frame_pc (frame) - 1); else + func_name = function_name_from_pc (get_frame_pc (frame)); + + if (func_name == NULL) + return 1; + + for (i = 0; known_auxiliary_function_name_patterns[i] != NULL; i += 1) { - /* If we could not find the symbol containing the name of the - main program, that means that the compiler that was used to build - was not recent enough. In that case, we fallback to the previous - mechanism, which is a little bit less reliable, but has proved to work - in most cases. The only cases where it will fail is when the user - has set some breakpoints which will be hit before the end of the - begin command processing (eg in the initialization code). - - The begining of the main Ada subprogram is located by breaking - on the adainit procedure. Since we know that the binder generates - the call to this procedure exactly 2 calls before the call to the - Ada main subprogram, it is then easy to put a breakpoint on this - Ada main subprogram once we hit adainit. - */ - do_command ("tbreak adainit", 0); - do_command ("run ", args, 0); - do_command ("up", 0); - do_command ("tbreak +2", 0); - do_command ("continue", 0); - do_command ("step", 0); + re_comp (known_auxiliary_function_name_patterns[i]); + if (re_exec (func_name)) + return 1; } - do_cleanups (old_chain); + return 0; } -int -is_ada_runtime_file (char *filename) +/* Find the first frame that contains debugging information and that is not + part of the Ada run-time, starting from FI and moving upward. */ + +void +ada_find_printable_frame (struct frame_info *fi) { - return (DEPRECATED_STREQN (filename, "s-", 2) || - DEPRECATED_STREQN (filename, "a-", 2) || - DEPRECATED_STREQN (filename, "g-", 2) || DEPRECATED_STREQN (filename, "i-", 2)); + for (; fi != NULL; fi = get_prev_frame (fi)) + { + if (!is_known_support_routine (fi)) + { + select_frame (fi); + break; + } + } + } -/* find the first frame that contains debugging information and that is not - part of the Ada run-time, starting from fi and moving upward. */ +/* Name found for exception associated with last bpstat sent to + ada_adjust_exception_stop. Set to the null string if that bpstat + did not correspond to an Ada exception or no name could be found. */ -int -find_printable_frame (struct frame_info *fi, int level) +static char last_exception_name[256]; + +/* If BS indicates a stop in an Ada exception, try to go up to a frame + that will be meaningful to the user, and save the name of the last + exception (truncated, if necessary) in last_exception_name. */ + +void +ada_adjust_exception_stop (bpstat bs) { - struct symtab_and_line sal; + CORE_ADDR addr; + struct frame_info *fi; + int frame_level; + char *selected_frame_func; - for (; fi != NULL; level += 1, fi = get_prev_frame (fi)) + addr = 0; + last_exception_name[0] = '\0'; + fi = get_selected_frame (); + selected_frame_func = function_name_from_pc (get_frame_pc (fi)); + + switch (ada_exception_breakpoint_type (bs)) { - find_frame_sal (fi, &sal); - if (sal.symtab && !is_ada_runtime_file (sal.symtab->filename)) - { -#if defined(__alpha__) && defined(__osf__) && !defined(VXWORKS_TARGET) - /* libpthread.so contains some debugging information that prevents us - from finding the right frame */ + default: + return; + case 1: + break; + case 2: + /* Unhandled exceptions. Select the frame corresponding to + ada.exceptions.process_raise_exception. This frame is at + least 2 levels up, so we simply skip the first 2 frames + without checking the name of their associated function. */ + for (frame_level = 0; frame_level < 2; frame_level += 1) + if (fi != NULL) + fi = get_prev_frame (fi); + while (fi != NULL) + { + const char *func_name = function_name_from_pc (get_frame_pc (fi)); + if (func_name != NULL + && strcmp (func_name, process_raise_exception_name) == 0) + break; /* We found the frame we were looking for... */ + fi = get_prev_frame (fi); + } + if (fi == NULL) + break; + select_frame (fi); + break; + } - if (sal.symtab->objfile && - DEPRECATED_STREQ (sal.symtab->objfile->name, "/usr/shlib/libpthread.so")) - continue; -#endif - deprecated_selected_frame = fi; - break; - } + addr = parse_and_eval_address ("e.full_name"); + + if (addr != 0) + read_memory (addr, last_exception_name, + sizeof (last_exception_name) - 1); + last_exception_name[sizeof (last_exception_name) - 1] = '\0'; + ada_find_printable_frame (get_selected_frame ()); +} + +/* Output Ada exception name (if any) associated with last call to + ada_adjust_exception_stop. */ + +void +ada_print_exception_stop (bpstat bs) +{ + if (last_exception_name[0] != '\000') + { + ui_out_text (uiout, last_exception_name); + ui_out_text (uiout, " at "); } +} + +/* Parses the CONDITION string associated with a breakpoint exception + to get the name of the exception on which the breakpoint has been + set. The returned string needs to be deallocated after use. */ + +static char * +exception_name_from_cond (const char *condition) +{ + char *start, *end, *exception_name; + int exception_name_len; - return level; + start = strrchr (condition, '&') + 1; + end = strchr (start, ')') - 1; + exception_name_len = end - start + 1; + + exception_name = + (char *) xmalloc ((exception_name_len + 1) * sizeof (char)); + sprintf (exception_name, "%.*s", exception_name_len, start); + + return exception_name; +} + +/* Print Ada-specific exception information about B, other than task + clause. Return non-zero iff B was an Ada exception breakpoint. */ + +int +ada_print_exception_breakpoint_nontask (struct breakpoint *b) +{ +#ifdef GNAT_GDB + if (b->break_on_exception == 1) + { + if (b->cond_string) /* the breakpoint is on a specific exception. */ + { + char *exception_name = exception_name_from_cond (b->cond_string); + + make_cleanup (xfree, exception_name); + + ui_out_text (uiout, "on "); + if (ui_out_is_mi_like_p (uiout)) + ui_out_field_string (uiout, "exception", exception_name); + else + { + ui_out_text (uiout, "exception "); + ui_out_text (uiout, exception_name); + ui_out_text (uiout, " "); + } + } + else + ui_out_text (uiout, "on all exceptions"); + } + else if (b->break_on_exception == 2) + ui_out_text (uiout, "on unhandled exception"); + else if (b->break_on_exception == 3) + ui_out_text (uiout, "on assert failure"); + else + return 0; + return 1; +#else + return 0; +#endif } +/* Print task identifier for breakpoint B, if it is an Ada-specific + breakpoint with non-zero tasking information. */ + void -ada_report_exception_break (struct breakpoint *b) -{ - /* FIXME: break_on_exception should be defined in breakpoint.h */ - /* if (b->break_on_exception == 1) - { - /* Assume that cond has 16 elements, the 15th - being the exception *//* - if (b->cond && b->cond->nelts == 16) - { - ui_out_text (uiout, "on "); - ui_out_field_string (uiout, "exception", - SYMBOL_NAME (b->cond->elts[14].symbol)); - } - else - ui_out_text (uiout, "on all exceptions"); - } - else if (b->break_on_exception == 2) - ui_out_text (uiout, "on unhandled exception"); - else if (b->break_on_exception == 3) - ui_out_text (uiout, "on assert failure"); - #else - if (b->break_on_exception == 1) - { */ - /* Assume that cond has 16 elements, the 15th - being the exception *//* - if (b->cond && b->cond->nelts == 16) - { - fputs_filtered ("on ", gdb_stdout); - fputs_filtered (SYMBOL_NAME - (b->cond->elts[14].symbol), gdb_stdout); - } - else - fputs_filtered ("on all exceptions", gdb_stdout); - } - else if (b->break_on_exception == 2) - fputs_filtered ("on unhandled exception", gdb_stdout); - else if (b->break_on_exception == 3) - fputs_filtered ("on assert failure", gdb_stdout); - */ +ada_print_exception_breakpoint_task (struct breakpoint *b) +{ +#ifdef GNAT_GDB + if (b->task != 0) + { + ui_out_text (uiout, " task "); + ui_out_field_int (uiout, "task", b->task); + } +#endif } int @@ -5043,91 +6316,148 @@ ada_is_exception_sym (struct symbol *sym) char *type_name = type_name_no_tag (SYMBOL_TYPE (sym)); return (SYMBOL_CLASS (sym) != LOC_TYPEDEF - && SYMBOL_CLASS (sym) != LOC_BLOCK - && SYMBOL_CLASS (sym) != LOC_CONST - && type_name != NULL && DEPRECATED_STREQ (type_name, "exception")); + && SYMBOL_CLASS (sym) != LOC_BLOCK + && SYMBOL_CLASS (sym) != LOC_CONST + && type_name != NULL && strcmp (type_name, "exception") == 0); } int ada_maybe_exception_partial_symbol (struct partial_symbol *sym) { return (SYMBOL_CLASS (sym) != LOC_TYPEDEF - && SYMBOL_CLASS (sym) != LOC_BLOCK - && SYMBOL_CLASS (sym) != LOC_CONST); + && SYMBOL_CLASS (sym) != LOC_BLOCK + && SYMBOL_CLASS (sym) != LOC_CONST); +} + +/* Cause the appropriate error if no appropriate runtime symbol is + found to set a breakpoint, using ERR_DESC to describe the + breakpoint. */ + +static void +error_breakpoint_runtime_sym_not_found (const char *err_desc) +{ + /* If we are not debugging an Ada program, we can not put exception + breakpoints! */ + + if (ada_update_initial_language (language_unknown, NULL) != language_ada) + error ("Unable to break on %s. Is this an Ada main program?", err_desc); + + /* If the symbol does not exist, then check that the program is + already started, to make sure that shared libraries have been + loaded. If it is not started, this may mean that the symbol is + in a shared library. */ + + if (ptid_get_pid (inferior_ptid) == 0) + error ("Unable to break on %s. Try to start the program first.", err_desc); + + /* At this point, we know that we are debugging an Ada program and + that the inferior has been started, but we still are not able to + find the run-time symbols. That can mean that we are in + configurable run time mode, or that a-except as been optimized + out by the linker... In any case, at this point it is not worth + supporting this feature. */ + + error ("Cannot break on %s in this configuration.", err_desc); +} + +/* Test if NAME is currently defined, and that either ALLOW_TRAMP or + the symbol is not a shared-library trampoline. Return the result of + the test. */ + +static int +is_runtime_sym_defined (const char *name, int allow_tramp) +{ + struct minimal_symbol *msym; + + msym = lookup_minimal_symbol (name, NULL, NULL); + return (msym != NULL && msym->type != mst_unknown + && (allow_tramp || msym->type != mst_solib_trampoline)); } /* If ARG points to an Ada exception or assert breakpoint, rewrite - into equivalent form. Return resulting argument string. Set + into equivalent form. Return resulting argument string. Set *BREAK_ON_EXCEPTIONP to 1 for ordinary break on exception, 2 for - break on unhandled, 3 for assert, 0 otherwise. */ + break on unhandled, 3 for assert, 0 otherwise. */ + char * ada_breakpoint_rewrite (char *arg, int *break_on_exceptionp) { if (arg == NULL) return arg; *break_on_exceptionp = 0; - /* FIXME: language_ada should be defined in defs.h */ - /* if (current_language->la_language == language_ada - && DEPRECATED_STREQN (arg, "exception", 9) && - (arg[9] == ' ' || arg[9] == '\t' || arg[9] == '\0')) - { - char *tok, *end_tok; - int toklen; - - *break_on_exceptionp = 1; - - tok = arg+9; - while (*tok == ' ' || *tok == '\t') - tok += 1; - - end_tok = tok; - - while (*end_tok != ' ' && *end_tok != '\t' && *end_tok != '\000') - end_tok += 1; - - toklen = end_tok - tok; - - arg = (char*) xmalloc (sizeof ("__gnat_raise_nodefer_with_msg if " - "long_integer(e) = long_integer(&)") - + toklen + 1); - make_cleanup (xfree, arg); - if (toklen == 0) - strcpy (arg, "__gnat_raise_nodefer_with_msg"); - else if (DEPRECATED_STREQN (tok, "unhandled", toklen)) - { - *break_on_exceptionp = 2; - strcpy (arg, "__gnat_unhandled_exception"); - } - else - { - sprintf (arg, "__gnat_raise_nodefer_with_msg if " - "long_integer(e) = long_integer(&%.*s)", - toklen, tok); - } - } - else if (current_language->la_language == language_ada - && DEPRECATED_STREQN (arg, "assert", 6) && - (arg[6] == ' ' || arg[6] == '\t' || arg[6] == '\0')) - { - char *tok = arg + 6; - - *break_on_exceptionp = 3; - - arg = (char*) - xmalloc (sizeof ("system__assertions__raise_assert_failure") - + strlen (tok) + 1); - make_cleanup (xfree, arg); - sprintf (arg, "system__assertions__raise_assert_failure%s", tok); - } - */ + if (current_language->la_language == language_ada + && strncmp (arg, "exception", 9) == 0 + && (arg[9] == ' ' || arg[9] == '\t' || arg[9] == '\0')) + { + char *tok, *end_tok; + int toklen; + int has_exception_propagation = + is_runtime_sym_defined (raise_sym_name, 1); + + *break_on_exceptionp = 1; + + tok = arg + 9; + while (*tok == ' ' || *tok == '\t') + tok += 1; + + end_tok = tok; + + while (*end_tok != ' ' && *end_tok != '\t' && *end_tok != '\000') + end_tok += 1; + + toklen = end_tok - tok; + + arg = (char *) xmalloc (sizeof (longest_exception_template) + toklen); + make_cleanup (xfree, arg); + if (toklen == 0) + { + if (has_exception_propagation) + sprintf (arg, "'%s'", raise_sym_name); + else + error_breakpoint_runtime_sym_not_found ("exception"); + } + else if (strncmp (tok, "unhandled", toklen) == 0) + { + if (is_runtime_sym_defined (raise_unhandled_sym_name, 1)) + sprintf (arg, "'%s'", raise_unhandled_sym_name); + else + error_breakpoint_runtime_sym_not_found ("exception"); + + *break_on_exceptionp = 2; + } + else + { + if (is_runtime_sym_defined (raise_sym_name, 0)) + sprintf (arg, "'%s' if long_integer(e) = long_integer(&%.*s)", + raise_sym_name, toklen, tok); + else + error_breakpoint_runtime_sym_not_found ("specific exception"); + } + } + else if (current_language->la_language == language_ada + && strncmp (arg, "assert", 6) == 0 + && (arg[6] == ' ' || arg[6] == '\t' || arg[6] == '\0')) + { + char *tok = arg + 6; + + if (!is_runtime_sym_defined (raise_assert_sym_name, 1)) + error_breakpoint_runtime_sym_not_found ("failed assertion"); + + *break_on_exceptionp = 3; + + arg = + (char *) xmalloc (sizeof (raise_assert_sym_name) + strlen (tok) + 2); + make_cleanup (xfree, arg); + sprintf (arg, "'%s'%s", raise_assert_sym_name, tok); + } return arg; } - /* Field Access */ + /* Field Access */ /* True if field number FIELD_NUM in struct or union type TYPE is supposed - to be invisible to users. */ + to be invisible to users. */ int ada_is_ignored_field (struct type *type, int field_num) @@ -5138,30 +6468,42 @@ ada_is_ignored_field (struct type *type, int field_num) { const char *name = TYPE_FIELD_NAME (type, field_num); return (name == NULL - || (name[0] == '_' && !DEPRECATED_STREQN (name, "_parent", 7))); + || (name[0] == '_' && strncmp (name, "_parent", 7) != 0)); } } -/* True iff structure type TYPE has a tag field. */ +/* True iff TYPE has a tag field. If REFOK, then TYPE may also be a + pointer or reference type whose ultimate target has a tag field. */ int -ada_is_tagged_type (struct type *type) +ada_is_tagged_type (struct type *type, int refok) { - if (type == NULL || TYPE_CODE (type) != TYPE_CODE_STRUCT) - return 0; + return (ada_lookup_struct_elt_type (type, "_tag", refok, 1, NULL) != NULL); +} - return (ada_lookup_struct_elt_type (type, "_tag", 1, NULL) != NULL); +/* True iff TYPE represents the type of X'Tag */ + +int +ada_is_tag_type (struct type *type) +{ + if (type == NULL || TYPE_CODE (type) != TYPE_CODE_PTR) + return 0; + else { + const char *name = ada_type_name (TYPE_TARGET_TYPE (type)); + return (name != NULL + && strcmp (name, "ada__tags__dispatch_table") == 0); + } } -/* The type of the tag on VAL. */ +/* The type of the tag on VAL. */ struct type * ada_tag_type (struct value *val) { - return ada_lookup_struct_elt_type (VALUE_TYPE (val), "_tag", 0, NULL); + return ada_lookup_struct_elt_type (VALUE_TYPE (val), "_tag", 1, 0, NULL); } -/* The value of the tag on VAL. */ +/* The value of the tag on VAL. */ struct value * ada_value_tag (struct value *val) @@ -5169,7 +6511,84 @@ ada_value_tag (struct value *val) return ada_value_struct_elt (val, "_tag", "record"); } -/* The parent type of TYPE, or NULL if none. */ +/* The value of the tag on the object of type TYPE whose contents are + saved at VALADDR, if it is non-null, or is at memory address + ADDRESS. */ + +static struct value * +value_tag_from_contents_and_address (struct type *type, char *valaddr, + CORE_ADDR address) +{ + int tag_byte_offset, dummy1, dummy2; + struct type *tag_type; + if (find_struct_field ("_tag", type, 0, &tag_type, &tag_byte_offset, + &dummy1, &dummy2)) + { + char *valaddr1 = (valaddr == NULL) ? NULL : valaddr + tag_byte_offset; + CORE_ADDR address1 = (address == 0) ? 0 : address + tag_byte_offset; + + return value_from_contents_and_address (tag_type, valaddr1, address1); + } + return NULL; +} + +static struct type * +type_from_tag (struct value *tag) +{ + const char *type_name = ada_tag_name (tag); + if (type_name != NULL) + return ada_find_any_type (ada_encode (type_name)); + return NULL; +} + +struct tag_args { + struct value *tag; + char *name; +}; + +/* Wrapper function used by ada_tag_name. Given a struct tag_args* + value ARGS, sets ARGS->name to the tag name of ARGS->tag. + The value stored in ARGS->name is valid until the next call to + ada_tag_name_1. */ + +static int +ada_tag_name_1 (void *args0) +{ + struct tag_args *args = (struct tag_args *) args0; + static char name[1024]; + char* p; + struct value *val; + args->name = NULL; + val = ada_value_struct_elt (args->tag, "tsd", NULL); + if (val == NULL) + return 0; + val = ada_value_struct_elt (val, "expanded_name", NULL); + if (val == NULL) + return 0; + read_memory_string (value_as_address (val), name, sizeof (name) - 1); + for (p = name; *p != '\0'; p += 1) + if (isalpha (*p)) + *p = tolower (*p); + args->name = name; + return 0; +} + +/* The type name of the dynamic type denoted by the 'tag value TAG, as + * a C string. */ + +const char * +ada_tag_name (struct value *tag) +{ + struct tag_args args; + if (! ada_is_tag_type (VALUE_TYPE (tag))) + return NULL; + args.tag = tag; + args.name = NULL; + catch_errors (ada_tag_name_1, &args, NULL, RETURN_MASK_ALL); + return args.name; +} + +/* The parent type of TYPE, or NULL if none. */ struct type * ada_parent_type (struct type *type) @@ -5188,66 +6607,69 @@ ada_parent_type (struct type *type) return NULL; } -/* True iff field number FIELD_NUM of structure type TYPE contains the - parent-type (inherited) fields of a derived type. Assumes TYPE is - a structure type with at least FIELD_NUM+1 fields. */ +/* True iff field number FIELD_NUM of structure type TYPE contains the + parent-type (inherited) fields of a derived type. Assumes TYPE is + a structure type with at least FIELD_NUM+1 fields. */ int ada_is_parent_field (struct type *type, int field_num) { const char *name = TYPE_FIELD_NAME (check_typedef (type), field_num); - return (name != NULL && - (DEPRECATED_STREQN (name, "PARENT", 6) || DEPRECATED_STREQN (name, "_parent", 7))); + return (name != NULL + && (strncmp (name, "PARENT", 6) == 0 + || strncmp (name, "_parent", 7) == 0)); } -/* True iff field number FIELD_NUM of structure type TYPE is a +/* True iff field number FIELD_NUM of structure type TYPE is a transparent wrapper field (which should be silently traversed when doing - field selection and flattened when printing). Assumes TYPE is a + field selection and flattened when printing). Assumes TYPE is a structure type with at least FIELD_NUM+1 fields. Such fields are always - structures. */ + structures. */ int ada_is_wrapper_field (struct type *type, int field_num) { const char *name = TYPE_FIELD_NAME (type, field_num); return (name != NULL - && (DEPRECATED_STREQN (name, "PARENT", 6) || DEPRECATED_STREQ (name, "REP") - || DEPRECATED_STREQN (name, "_parent", 7) - || name[0] == 'S' || name[0] == 'R' || name[0] == 'O')); + && (strncmp (name, "PARENT", 6) == 0 + || strcmp (name, "REP") == 0 + || strncmp (name, "_parent", 7) == 0 + || name[0] == 'S' || name[0] == 'R' || name[0] == 'O')); } -/* True iff field number FIELD_NUM of structure or union type TYPE - is a variant wrapper. Assumes TYPE is a structure type with at least - FIELD_NUM+1 fields. */ +/* True iff field number FIELD_NUM of structure or union type TYPE + is a variant wrapper. Assumes TYPE is a structure type with at least + FIELD_NUM+1 fields. */ int ada_is_variant_part (struct type *type, int field_num) { struct type *field_type = TYPE_FIELD_TYPE (type, field_num); return (TYPE_CODE (field_type) == TYPE_CODE_UNION - || (is_dynamic_field (type, field_num) - && TYPE_CODE (TYPE_TARGET_TYPE (field_type)) == - TYPE_CODE_UNION)); + || (is_dynamic_field (type, field_num) + && TYPE_CODE (TYPE_TARGET_TYPE (field_type)) == + TYPE_CODE_UNION)); } /* Assuming that VAR_TYPE is a variant wrapper (type of the variant part) - whose discriminants are contained in the record type OUTER_TYPE, + whose discriminants are contained in the record type OUTER_TYPE, returns the type of the controlling discriminant for the variant. */ struct type * ada_variant_discrim_type (struct type *var_type, struct type *outer_type) { char *name = ada_variant_discrim_name (var_type); - struct type *type = ada_lookup_struct_elt_type (outer_type, name, 1, NULL); + struct type *type = + ada_lookup_struct_elt_type (outer_type, name, 1, 1, NULL); if (type == NULL) return builtin_type_int; else return type; } -/* Assuming that TYPE is the type of a variant wrapper, and FIELD_NUM is a +/* Assuming that TYPE is the type of a variant wrapper, and FIELD_NUM is a valid field number within it, returns 1 iff field FIELD_NUM of TYPE - represents a 'when others' clause; otherwise 0. */ + represents a 'when others' clause; otherwise 0. */ int ada_is_others_clause (struct type *type, int field_num) @@ -5257,8 +6679,8 @@ ada_is_others_clause (struct type *type, int field_num) } /* Assuming that TYPE0 is the type of the variant part of a record, - returns the name of the discriminant controlling the variant. The - value is valid until the next call to ada_variant_discrim_name. */ + returns the name of the discriminant controlling the variant. + The value is valid until the next call to ada_variant_discrim_name. */ char * ada_variant_discrim_name (struct type *type0) @@ -5283,8 +6705,8 @@ ada_variant_discrim_name (struct type *type0) for (discrim_end = name + strlen (name) - 6; discrim_end != name; discrim_end -= 1) { - if (DEPRECATED_STREQN (discrim_end, "___XVN", 6)) - break; + if (strncmp (discrim_end, "___XVN", 6) == 0) + break; } if (discrim_end == name) return ""; @@ -5293,10 +6715,11 @@ ada_variant_discrim_name (struct type *type0) discrim_start -= 1) { if (discrim_start == name + 1) - return ""; - if ((discrim_start > name + 3 && DEPRECATED_STREQN (discrim_start - 3, "___", 3)) - || discrim_start[-1] == '.') - break; + return ""; + if ((discrim_start > name + 3 + && strncmp (discrim_start - 3, "___", 3) == 0) + || discrim_start[-1] == '.') + break; } GROW_VECT (result, result_len, discrim_end - discrim_start + 1); @@ -5305,13 +6728,13 @@ ada_variant_discrim_name (struct type *type0) return result; } -/* Scan STR for a subtype-encoded number, beginning at position K. Put the - position of the character just past the number scanned in *NEW_K, - if NEW_K!=NULL. Put the scanned number in *R, if R!=NULL. Return 1 - if there was a valid number at the given position, and 0 otherwise. A - "subtype-encoded" number consists of the absolute value in decimal, - followed by the letter 'm' to indicate a negative number. Assumes 0m - does not occur. */ +/* Scan STR for a subtype-encoded number, beginning at position K. + Put the position of the character just past the number scanned in + *NEW_K, if NEW_K!=NULL. Put the scanned number in *R, if R!=NULL. + Return 1 if there was a valid number at the given position, and 0 + otherwise. A "subtype-encoded" number consists of the absolute value + in decimal, followed by the letter 'm' to indicate a negative number. + Assumes 0m does not occur. */ int ada_scan_number (const char str[], int k, LONGEST * R, int *new_k) @@ -5321,9 +6744,9 @@ ada_scan_number (const char str[], int k, LONGEST * R, int *new_k) if (!isdigit (str[k])) return 0; - /* Do it the hard way so as not to make any assumption about + /* Do it the hard way so as not to make any assumption about the relationship of unsigned long (%lu scan format code) and - LONGEST. */ + LONGEST. */ RU = 0; while (isdigit (str[k])) { @@ -5334,26 +6757,26 @@ ada_scan_number (const char str[], int k, LONGEST * R, int *new_k) if (str[k] == 'm') { if (R != NULL) - *R = (-(LONGEST) (RU - 1)) - 1; + *R = (-(LONGEST) (RU - 1)) - 1; k += 1; } else if (R != NULL) *R = (LONGEST) RU; - /* NOTE on the above: Technically, C does not say what the results of + /* NOTE on the above: Technically, C does not say what the results of - (LONGEST) RU or (LONGEST) -RU are for RU == largest positive number representable as a LONGEST (although either would probably work in most implementations). When RU>0, the locution in the then branch - above is always equivalent to the negative of RU. */ + above is always equivalent to the negative of RU. */ if (new_k != NULL) *new_k = k; return 1; } -/* Assuming that TYPE is a variant part wrapper type (a VARIANTS field), - and FIELD_NUM is a valid field number within it, returns 1 iff VAL is - in the range encoded by field FIELD_NUM of TYPE; otherwise 0. */ +/* Assuming that TYPE is a variant part wrapper type (a VARIANTS field), + and FIELD_NUM is a valid field number within it, returns 1 iff VAL is + in the range encoded by field FIELD_NUM of TYPE; otherwise 0. */ int ada_in_variant (LONGEST val, struct type *type, int field_num) @@ -5365,53 +6788,53 @@ ada_in_variant (LONGEST val, struct type *type, int field_num) while (1) { switch (name[p]) - { - case '\0': - return 0; - case 'S': - { - LONGEST W; - if (!ada_scan_number (name, p + 1, &W, &p)) - return 0; - if (val == W) - return 1; - break; - } - case 'R': - { - LONGEST L, U; - if (!ada_scan_number (name, p + 1, &L, &p) - || name[p] != 'T' || !ada_scan_number (name, p + 1, &U, &p)) - return 0; - if (val >= L && val <= U) - return 1; - break; - } - case 'O': - return 1; - default: - return 0; - } - } -} - -/* Given a value ARG1 (offset by OFFSET bytes) - of a struct or union type ARG_TYPE, - extract and return the value of one of its (non-static) fields. - FIELDNO says which field. Differs from value_primitive_field only - in that it can handle packed values of arbitrary type. */ + { + case '\0': + return 0; + case 'S': + { + LONGEST W; + if (!ada_scan_number (name, p + 1, &W, &p)) + return 0; + if (val == W) + return 1; + break; + } + case 'R': + { + LONGEST L, U; + if (!ada_scan_number (name, p + 1, &L, &p) + || name[p] != 'T' || !ada_scan_number (name, p + 1, &U, &p)) + return 0; + if (val >= L && val <= U) + return 1; + break; + } + case 'O': + return 1; + default: + return 0; + } + } +} + +/* FIXME: Lots of redundancy below. Try to consolidate. */ + +/* Given a value ARG1 (offset by OFFSET bytes) of a struct or union type + ARG_TYPE, extract and return the value of one of its (non-static) + fields. FIELDNO says which field. Differs from value_primitive_field + only in that it can handle packed values of arbitrary type. */ -struct value * +static struct value * ada_value_primitive_field (struct value *arg1, int offset, int fieldno, - struct type *arg_type) + struct type *arg_type) { - struct value *v; struct type *type; CHECK_TYPEDEF (arg_type); type = TYPE_FIELD_TYPE (arg_type, fieldno); - /* Handle packed fields */ + /* Handle packed fields. */ if (TYPE_FIELD_BITSIZE (arg_type, fieldno) != 0) { @@ -5419,23 +6842,86 @@ ada_value_primitive_field (struct value *arg1, int offset, int fieldno, int bit_size = TYPE_FIELD_BITSIZE (arg_type, fieldno); return ada_value_primitive_packed_val (arg1, VALUE_CONTENTS (arg1), - offset + bit_pos / 8, - bit_pos % 8, bit_size, type); + offset + bit_pos / 8, + bit_pos % 8, bit_size, type); } else return value_primitive_field (arg1, offset, fieldno, arg_type); } +/* Find field with name NAME in object of type TYPE. If found, return 1 + after setting *FIELD_TYPE_P to the field's type, *BYTE_OFFSET_P to + OFFSET + the byte offset of the field within an object of that type, + *BIT_OFFSET_P to the bit offset modulo byte size of the field, and + *BIT_SIZE_P to its size in bits if the field is packed, and 0 otherwise. + Looks inside wrappers for the field. Returns 0 if field not + found. */ +static int +find_struct_field (char *name, struct type *type, int offset, + struct type **field_type_p, + int *byte_offset_p, int *bit_offset_p, int *bit_size_p) +{ + int i; -/* Look for a field NAME in ARG. Adjust the address of ARG by OFFSET bytes, + CHECK_TYPEDEF (type); + *field_type_p = NULL; + *byte_offset_p = *bit_offset_p = *bit_size_p = 0; + + for (i = TYPE_NFIELDS (type) - 1; i >= 0; i -= 1) + { + int bit_pos = TYPE_FIELD_BITPOS (type, i); + int fld_offset = offset + bit_pos / 8; + char *t_field_name = TYPE_FIELD_NAME (type, i); + + if (t_field_name == NULL) + continue; + + else if (field_name_match (t_field_name, name)) + { + int bit_size = TYPE_FIELD_BITSIZE (type, i); + *field_type_p = TYPE_FIELD_TYPE (type, i); + *byte_offset_p = fld_offset; + *bit_offset_p = bit_pos % 8; + *bit_size_p = bit_size; + return 1; + } + else if (ada_is_wrapper_field (type, i)) + { + if (find_struct_field (name, TYPE_FIELD_TYPE (type, i), fld_offset, + field_type_p, byte_offset_p, bit_offset_p, + bit_size_p)) + return 1; + } + else if (ada_is_variant_part (type, i)) + { + int j; + struct type *field_type = check_typedef (TYPE_FIELD_TYPE (type, i)); + + for (j = TYPE_NFIELDS (field_type) - 1; j >= 0; j -= 1) + { + if (find_struct_field (name, TYPE_FIELD_TYPE (field_type, j), + fld_offset + + TYPE_FIELD_BITPOS (field_type, j)/8, + field_type_p, byte_offset_p, bit_offset_p, + bit_size_p)) + return 1; + } + } + } + return 0; +} + + + +/* Look for a field NAME in ARG. Adjust the address of ARG by OFFSET bytes, and search in it assuming it has (class) type TYPE. If found, return value, else return NULL. - Searches recursively through wrapper fields (e.g., '_parent'). */ + Searches recursively through wrapper fields (e.g., '_parent'). */ -struct value * +static struct value * ada_search_struct_field (char *name, struct value *arg, int offset, - struct type *type) + struct type *type) { int i; CHECK_TYPEDEF (type); @@ -5445,128 +6931,203 @@ ada_search_struct_field (char *name, struct value *arg, int offset, char *t_field_name = TYPE_FIELD_NAME (type, i); if (t_field_name == NULL) - continue; + continue; else if (field_name_match (t_field_name, name)) - return ada_value_primitive_field (arg, offset, i, type); + return ada_value_primitive_field (arg, offset, i, type); else if (ada_is_wrapper_field (type, i)) - { - struct value *v = ada_search_struct_field (name, arg, - offset + - TYPE_FIELD_BITPOS (type, - i) / - 8, - TYPE_FIELD_TYPE (type, - i)); - if (v != NULL) - return v; - } + { + struct value *v = + ada_search_struct_field (name, arg, + offset + TYPE_FIELD_BITPOS (type, i) / 8, + TYPE_FIELD_TYPE (type, i)); + if (v != NULL) + return v; + } else if (ada_is_variant_part (type, i)) - { - int j; - struct type *field_type = check_typedef (TYPE_FIELD_TYPE (type, i)); - int var_offset = offset + TYPE_FIELD_BITPOS (type, i) / 8; - - for (j = TYPE_NFIELDS (field_type) - 1; j >= 0; j -= 1) - { - struct value *v = ada_search_struct_field (name, arg, - var_offset - + - TYPE_FIELD_BITPOS - (field_type, j) / 8, - TYPE_FIELD_TYPE - (field_type, j)); - if (v != NULL) - return v; - } - } + { + int j; + struct type *field_type = check_typedef (TYPE_FIELD_TYPE (type, i)); + int var_offset = offset + TYPE_FIELD_BITPOS (type, i) / 8; + + for (j = TYPE_NFIELDS (field_type) - 1; j >= 0; j -= 1) + { + struct value *v = + ada_search_struct_field (name, arg, + var_offset + + TYPE_FIELD_BITPOS (field_type, j)/8, + TYPE_FIELD_TYPE (field_type, j)); + if (v != NULL) + return v; + } + } } return NULL; } -/* Given ARG, a value of type (pointer to a)* structure/union, - extract the component named NAME from the ultimate target structure/union - and return it as a value with its appropriate type. +/* Given ARG, a value of type (pointer or reference to a)* + structure/union, extract the component named NAME from the ultimate + target structure/union and return it as a value with its + appropriate type. If ARG is a pointer or reference and the field + is not packed, returns a reference to the field, otherwise the + value of the field (an lvalue if ARG is an lvalue). - The routine searches for NAME among all members of the structure itself - and (recursively) among all members of any wrapper members + The routine searches for NAME among all members of the structure itself + and (recursively) among all members of any wrapper members (e.g., '_parent'). - ERR is a name (for use in error messages) that identifies the class - of entity that ARG is supposed to be. */ + ERR is a name (for use in error messages) that identifies the class + of entity that ARG is supposed to be. ERR may be null, indicating + that on error, the function simply returns NULL, and does not + throw an error. (FIXME: True only if ARG is a pointer or reference + at the moment). */ struct value * ada_value_struct_elt (struct value *arg, char *name, char *err) { - struct type *t; + struct type *t, *t1; struct value *v; - arg = ada_coerce_ref (arg); - t = check_typedef (VALUE_TYPE (arg)); + v = NULL; + t1 = t = check_typedef (VALUE_TYPE (arg)); + if (TYPE_CODE (t) == TYPE_CODE_REF) + { + t1 = TYPE_TARGET_TYPE (t); + if (t1 == NULL) + { + if (err == NULL) + return NULL; + else + error ("Bad value type in a %s.", err); + } + CHECK_TYPEDEF (t1); + if (TYPE_CODE (t1) == TYPE_CODE_PTR) + { + COERCE_REF (arg); + t = t1; + } + } - /* Follow pointers until we get to a non-pointer. */ + while (TYPE_CODE (t) == TYPE_CODE_PTR) + { + t1 = TYPE_TARGET_TYPE (t); + if (t1 == NULL) + { + if (err == NULL) + return NULL; + else + error ("Bad value type in a %s.", err); + } + CHECK_TYPEDEF (t1); + if (TYPE_CODE (t1) == TYPE_CODE_PTR) + { + arg = value_ind (arg); + t = t1; + } + else + break; + } - while (TYPE_CODE (t) == TYPE_CODE_PTR || TYPE_CODE (t) == TYPE_CODE_REF) + if (TYPE_CODE (t1) != TYPE_CODE_STRUCT && TYPE_CODE (t1) != TYPE_CODE_UNION) { - arg = ada_value_ind (arg); - t = check_typedef (VALUE_TYPE (arg)); + if (err == NULL) + return NULL; + else + error ("Attempt to extract a component of a value that is not a %s.", + err); } - if (TYPE_CODE (t) != TYPE_CODE_STRUCT && TYPE_CODE (t) != TYPE_CODE_UNION) - error ("Attempt to extract a component of a value that is not a %s.", - err); + if (t1 == t) + v = ada_search_struct_field (name, arg, 0, t); + else + { + int bit_offset, bit_size, byte_offset; + struct type *field_type; + CORE_ADDR address; + + if (TYPE_CODE (t) == TYPE_CODE_PTR) + address = value_as_address (arg); + else + address = unpack_pointer (t, VALUE_CONTENTS (arg)); - v = ada_search_struct_field (name, arg, 0, t); - if (v == NULL) + t1 = ada_to_fixed_type (ada_get_base_type (t1), NULL, address, NULL); + if (find_struct_field (name, t1, 0, + &field_type, &byte_offset, &bit_offset, &bit_size)) + { + if (bit_size != 0) + { + arg = ada_value_ind (arg); + v = ada_value_primitive_packed_val (arg, NULL, byte_offset, + bit_offset, bit_size, + field_type); + } + else + v = value_from_pointer (lookup_reference_type (field_type), + address + byte_offset); + } + } + + if (v == NULL && err != NULL) error ("There is no member named %s.", name); return v; } /* Given a type TYPE, look up the type of the component of type named NAME. - If DISPP is non-null, add its byte displacement from the beginning of a - structure (pointed to by a value) of type TYPE to *DISPP (does not + If DISPP is non-null, add its byte displacement from the beginning of a + structure (pointed to by a value) of type TYPE to *DISPP (does not work for packed fields). Matches any field whose name has NAME as a prefix, possibly - followed by "___". + followed by "___". - TYPE can be either a struct or union, or a pointer or reference to - a struct or union. If it is a pointer or reference, its target - type is automatically used. + TYPE can be either a struct or union. If REFOK, TYPE may also + be a (pointer or reference)+ to a struct or union, and the + ultimate target type will be searched. Looks recursively into variant clauses and parent types. - If NOERR is nonzero, return NULL if NAME is not suitably defined. */ + If NOERR is nonzero, return NULL if NAME is not suitably defined or + TYPE is not a type of the right kind. */ -struct type * -ada_lookup_struct_elt_type (struct type *type, char *name, int noerr, - int *dispp) +static struct type * +ada_lookup_struct_elt_type (struct type *type, char *name, int refok, + int noerr, int *dispp) { int i; if (name == NULL) goto BadName; - while (1) - { - CHECK_TYPEDEF (type); - if (TYPE_CODE (type) != TYPE_CODE_PTR - && TYPE_CODE (type) != TYPE_CODE_REF) - break; - type = TYPE_TARGET_TYPE (type); - } + if (refok && type != NULL) + while (1) + { + CHECK_TYPEDEF (type); + if (TYPE_CODE (type) != TYPE_CODE_PTR + && TYPE_CODE (type) != TYPE_CODE_REF) + break; + type = TYPE_TARGET_TYPE (type); + } - if (TYPE_CODE (type) != TYPE_CODE_STRUCT && - TYPE_CODE (type) != TYPE_CODE_UNION) + if (type == NULL + || (TYPE_CODE (type) != TYPE_CODE_STRUCT && + TYPE_CODE (type) != TYPE_CODE_UNION)) { - target_terminal_ours (); - gdb_flush (gdb_stdout); - fprintf_unfiltered (gdb_stderr, "Type "); - type_print (type, "", gdb_stderr, -1); - error (" is not a structure or union type"); + if (noerr) + return NULL; + else + { + target_terminal_ours (); + gdb_flush (gdb_stdout); + fprintf_unfiltered (gdb_stderr, "Type "); + if (type == NULL) + fprintf_unfiltered (gdb_stderr, "(null)"); + else + type_print (type, "", gdb_stderr, -1); + error (" is not a structure or union type"); + } } type = to_static_fixed_type (type); @@ -5578,46 +7139,46 @@ ada_lookup_struct_elt_type (struct type *type, char *name, int noerr, int disp; if (t_field_name == NULL) - continue; + continue; else if (field_name_match (t_field_name, name)) - { - if (dispp != NULL) - *dispp += TYPE_FIELD_BITPOS (type, i) / 8; - return check_typedef (TYPE_FIELD_TYPE (type, i)); - } + { + if (dispp != NULL) + *dispp += TYPE_FIELD_BITPOS (type, i) / 8; + return check_typedef (TYPE_FIELD_TYPE (type, i)); + } else if (ada_is_wrapper_field (type, i)) - { - disp = 0; - t = ada_lookup_struct_elt_type (TYPE_FIELD_TYPE (type, i), name, - 1, &disp); - if (t != NULL) - { - if (dispp != NULL) - *dispp += disp + TYPE_FIELD_BITPOS (type, i) / 8; - return t; - } - } + { + disp = 0; + t = ada_lookup_struct_elt_type (TYPE_FIELD_TYPE (type, i), name, + 0, 1, &disp); + if (t != NULL) + { + if (dispp != NULL) + *dispp += disp + TYPE_FIELD_BITPOS (type, i) / 8; + return t; + } + } else if (ada_is_variant_part (type, i)) - { - int j; - struct type *field_type = check_typedef (TYPE_FIELD_TYPE (type, i)); - - for (j = TYPE_NFIELDS (field_type) - 1; j >= 0; j -= 1) - { - disp = 0; - t = ada_lookup_struct_elt_type (TYPE_FIELD_TYPE (field_type, j), - name, 1, &disp); - if (t != NULL) - { - if (dispp != NULL) - *dispp += disp + TYPE_FIELD_BITPOS (type, i) / 8; - return t; - } - } - } + { + int j; + struct type *field_type = check_typedef (TYPE_FIELD_TYPE (type, i)); + + for (j = TYPE_NFIELDS (field_type) - 1; j >= 0; j -= 1) + { + disp = 0; + t = ada_lookup_struct_elt_type (TYPE_FIELD_TYPE (field_type, j), + name, 0, 1, &disp); + if (t != NULL) + { + if (dispp != NULL) + *dispp += disp + TYPE_FIELD_BITPOS (type, i) / 8; + return t; + } + } + } } @@ -5637,12 +7198,12 @@ BadName: /* Assuming that VAR_TYPE is the type of a variant part of a record (a union), within a value of type OUTER_TYPE that is stored in GDB at - OUTER_VALADDR, determine which variant clause (field number in VAR_TYPE, - numbering from 0) is applicable. Returns -1 if none are. */ + OUTER_VALADDR, determine which variant clause (field number in VAR_TYPE, + numbering from 0) is applicable. Returns -1 if none are. */ int ada_which_variant_applies (struct type *var_type, struct type *outer_type, - char *outer_valaddr) + char *outer_valaddr) { int others_clause; int i; @@ -5653,7 +7214,7 @@ ada_which_variant_applies (struct type *var_type, struct type *outer_type, disp = 0; discrim_type = - ada_lookup_struct_elt_type (outer_type, discrim_name, 1, &disp); + ada_lookup_struct_elt_type (outer_type, discrim_name, 1, 1, &disp); if (discrim_type == NULL) return -1; discrim_val = unpack_long (discrim_type, outer_valaddr + disp); @@ -5662,9 +7223,9 @@ ada_which_variant_applies (struct type *var_type, struct type *outer_type, for (i = 0; i < TYPE_NFIELDS (var_type); i += 1) { if (ada_is_others_clause (var_type, i)) - others_clause = i; + others_clause = i; else if (ada_in_variant (discrim_val, var_type, i)) - return i; + return i; } return others_clause; @@ -5672,13 +7233,13 @@ ada_which_variant_applies (struct type *var_type, struct type *outer_type, - /* Dynamic-Sized Records */ + /* Dynamic-Sized Records */ /* Strategy: The type ostensibly attached to a value with dynamic size (i.e., a size that is not statically recorded in the debugging data) does not accurately reflect the size or layout of the value. Our strategy is to convert these values to values with accurate, - conventional types that are constructed on the fly. */ + conventional types that are constructed on the fly. */ /* There is a subtle and tricky problem here. In general, we cannot determine the size of dynamic records without its data. However, @@ -5687,7 +7248,7 @@ ada_which_variant_applies (struct type *var_type, struct type *outer_type, of the type at the time of its allocation in order to reserve space for GDB's internal copy of the data. That's why the 'to_fixed_xxx_type' routines take (target) addresses as parameters, - rather than struct value*s. + rather than struct value*s. However, GDB's internal history variables ($1, $2, etc.) are struct value*s containing internal copies of the data that are not, in @@ -5705,22 +7266,22 @@ ada_which_variant_applies (struct type *var_type, struct type *outer_type, address, target address) triple as arguments to represent a value. The host address, if non-null, is supposed to contain an internal copy of the relevant data; otherwise, the program is to consult the - target at the target address. */ + target at the target address. */ /* Assuming that VAL0 represents a pointer value, the result of dereferencing it. Differs from value_ind in its treatment of - dynamic-sized types. */ + dynamic-sized types. */ struct value * ada_value_ind (struct value *val0) { struct value *val = unwrap_value (value_ind (val0)); - return ada_to_fixed_value (VALUE_TYPE (val), 0, - VALUE_ADDRESS (val) + VALUE_OFFSET (val), val); + return ada_to_fixed_value (val); } /* The value resulting from dereferencing any "reference to" - * qualifiers on VAL0. */ + qualifiers on VAL0. */ + static struct value * ada_coerce_ref (struct value *val0) { @@ -5729,16 +7290,14 @@ ada_coerce_ref (struct value *val0) struct value *val = val0; COERCE_REF (val); val = unwrap_value (val); - return ada_to_fixed_value (VALUE_TYPE (val), 0, - VALUE_ADDRESS (val) + VALUE_OFFSET (val), - val); + return ada_to_fixed_value (val); } else return val0; } /* Return OFF rounded upward if necessary to a multiple of - ALIGNMENT (a power of 2). */ + ALIGNMENT (a power of 2). */ static unsigned int align_value (unsigned int off, unsigned int alignment) @@ -5746,22 +7305,7 @@ align_value (unsigned int off, unsigned int alignment) return (off + alignment - 1) & ~(alignment - 1); } -/* Return the additional bit offset required by field F of template - type TYPE. */ - -static unsigned int -field_offset (struct type *type, int f) -{ - int n = TYPE_FIELD_BITPOS (type, f); - /* Kludge (temporary?) to fix problem with dwarf output. */ - if (n < 0) - return (unsigned int) n & 0xffff; - else - return n; -} - - -/* Return the bit alignment required for field #F of template type TYPE. */ +/* Return the bit alignment required for field #F of template type TYPE. */ static unsigned int field_alignment (struct type *type, int f) @@ -5770,41 +7314,98 @@ field_alignment (struct type *type, int f) int len = (name == NULL) ? 0 : strlen (name); int align_offset; - if (len < 8 || !isdigit (name[len - 1])) - return TARGET_CHAR_BIT; + if (!isdigit (name[len - 1])) + return 1; if (isdigit (name[len - 2])) align_offset = len - 2; else align_offset = len - 1; - if (align_offset < 7 || !DEPRECATED_STREQN ("___XV", name + align_offset - 6, 5)) + if (align_offset < 7 || strncmp ("___XV", name + align_offset - 6, 5) != 0) return TARGET_CHAR_BIT; return atoi (name + align_offset) * TARGET_CHAR_BIT; } -/* Find a type named NAME. Ignores ambiguity. */ -struct type * -ada_find_any_type (const char *name) +/* Find a symbol named NAME. Ignores ambiguity. */ + +struct symbol * +ada_find_any_symbol (const char *name) { struct symbol *sym; - sym = standard_lookup (name, VAR_DOMAIN); + sym = standard_lookup (name, get_selected_block (NULL), VAR_DOMAIN); if (sym != NULL && SYMBOL_CLASS (sym) == LOC_TYPEDEF) - return SYMBOL_TYPE (sym); + return sym; + + sym = standard_lookup (name, NULL, STRUCT_DOMAIN); + return sym; +} + +/* Find a type named NAME. Ignores ambiguity. */ + +struct type * +ada_find_any_type (const char *name) +{ + struct symbol *sym = ada_find_any_symbol (name); - sym = standard_lookup (name, STRUCT_DOMAIN); if (sym != NULL) return SYMBOL_TYPE (sym); return NULL; } +/* Given a symbol NAME and its associated BLOCK, search all symbols + for its ___XR counterpart, which is the ``renaming'' symbol + associated to NAME. Return this symbol if found, return + NULL otherwise. */ + +struct symbol * +ada_find_renaming_symbol (const char *name, struct block *block) +{ + const struct symbol *function_sym = block_function (block); + char *rename; + + if (function_sym != NULL) + { + /* If the symbol is defined inside a function, NAME is not fully + qualified. This means we need to prepend the function name + as well as adding the ``___XR'' suffix to build the name of + the associated renaming symbol. */ + char *function_name = SYMBOL_LINKAGE_NAME (function_sym); + const int function_name_len = strlen (function_name); + const int rename_len = function_name_len + + 2 /* "__" */ + + strlen (name) + + 6 /* "___XR\0" */; + + /* Library-level functions are a special case, as GNAT adds + a ``_ada_'' prefix to the function name to avoid namespace + pollution. However, the renaming symbol themselves do not + have this prefix, so we need to skip this prefix if present. */ + if (function_name_len > 5 /* "_ada_" */ + && strstr (function_name, "_ada_") == function_name) + function_name = function_name + 5; + + rename = (char *) alloca (rename_len * sizeof (char)); + sprintf (rename, "%s__%s___XR", function_name, name); + } + else + { + const int rename_len = strlen (name) + 6; + rename = (char *) alloca (rename_len * sizeof (char)); + sprintf (rename, "%s___XR", name); + } + + return ada_find_any_symbol (rename); +} + /* Because of GNAT encoding conventions, several GDB symbols may match a - given type name. If the type denoted by TYPE0 is to be preferred to + given type name. If the type denoted by TYPE0 is to be preferred to that of TYPE1 for purposes of type printing, return non-zero; - otherwise return 0. */ + otherwise return 0. */ + int ada_prefer_type (struct type *type0, struct type *type1) { @@ -5816,19 +7417,22 @@ ada_prefer_type (struct type *type0, struct type *type1) return 1; else if (TYPE_CODE (type0) == TYPE_CODE_VOID) return 0; + else if (TYPE_NAME (type1) == NULL && TYPE_NAME (type0) != NULL) + return 1; else if (ada_is_packed_array_type (type0)) return 1; - else if (ada_is_array_descriptor (type0) - && !ada_is_array_descriptor (type1)) + else if (ada_is_array_descriptor_type (type0) + && !ada_is_array_descriptor_type (type1)) return 1; else if (ada_renaming_type (type0) != NULL - && ada_renaming_type (type1) == NULL) + && ada_renaming_type (type1) == NULL) return 1; return 0; } /* The name of TYPE, which is either its TYPE_NAME, or, if that is - null, its TYPE_TAG_NAME. Null if TYPE is null. */ + null, its TYPE_TAG_NAME. Null if TYPE is null. */ + char * ada_type_name (struct type *type) { @@ -5841,16 +7445,13 @@ ada_type_name (struct type *type) } /* Find a parallel type to TYPE whose name is formed by appending - SUFFIX to the name of TYPE. */ + SUFFIX to the name of TYPE. */ struct type * ada_find_parallel_type (struct type *type, const char *suffix) { static char *name; static size_t name_len = 0; - struct symbol **syms; - struct block **blocks; - int nsyms; int len; char *typename = ada_type_name (type); @@ -5869,7 +7470,7 @@ ada_find_parallel_type (struct type *type, const char *suffix) /* If TYPE is a variable-size record type, return the corresponding template - type describing its fields. Otherwise, return NULL. */ + type describing its fields. Otherwise, return NULL. */ static struct type * dynamic_template_type (struct type *type) @@ -5882,15 +7483,15 @@ dynamic_template_type (struct type *type) else { int len = strlen (ada_type_name (type)); - if (len > 6 && DEPRECATED_STREQ (ada_type_name (type) + len - 6, "___XVE")) - return type; + if (len > 6 && strcmp (ada_type_name (type) + len - 6, "___XVE") == 0) + return type; else - return ada_find_parallel_type (type, "___XVE"); + return ada_find_parallel_type (type, "___XVE"); } } /* Assuming that TEMPL_TYPE is a union or struct type, returns - non-zero iff field FIELD_NUM of TEMPL_TYPE has dynamic size. */ + non-zero iff field FIELD_NUM of TEMPL_TYPE has dynamic size. */ static int is_dynamic_field (struct type *templ_type, int field_num) @@ -5901,21 +7502,27 @@ is_dynamic_field (struct type *templ_type, int field_num) && strstr (name, "___XVL") != NULL; } -/* Assuming that TYPE is a struct type, returns non-zero iff TYPE - contains a variant part. */ +/* The index of the variant field of TYPE, or -1 if TYPE does not + represent a variant record type. */ static int -contains_variant_part (struct type *type) +variant_field_index (struct type *type) { int f; - if (type == NULL || TYPE_CODE (type) != TYPE_CODE_STRUCT - || TYPE_NFIELDS (type) <= 0) - return 0; - return ada_is_variant_part (type, TYPE_NFIELDS (type) - 1); + if (type == NULL || TYPE_CODE (type) != TYPE_CODE_STRUCT) + return -1; + + for (f = 0; f < TYPE_NFIELDS (type); f += 1) + { + if (ada_is_variant_part (type, f)) + return f; + } + return -1; } -/* A record type with no fields, . */ +/* A record type with no fields. */ + static struct type * empty_record (struct objfile *objfile) { @@ -5931,29 +7538,50 @@ empty_record (struct objfile *objfile) } /* An ordinary record type (with fixed-length fields) that describes - the value of type TYPE at VALADDR or ADDRESS (see comments at - the beginning of this section) VAL according to GNAT conventions. - DVAL0 should describe the (portion of a) record that contains any + the value of type TYPE at VALADDR or ADDRESS (see comments at + the beginning of this section) VAL according to GNAT conventions. + DVAL0 should describe the (portion of a) record that contains any necessary discriminants. It should be NULL if VALUE_TYPE (VAL) is an outer-level type (i.e., as opposed to a branch of a variant.) A variant field (unless unchecked) is replaced by a particular branch - of the variant. */ -/* NOTE: Limitations: For now, we assume that dynamic fields and - * variants occupy whole numbers of bytes. However, they need not be - * byte-aligned. */ + of the variant. -static struct type * -template_to_fixed_record_type (struct type *type, char *valaddr, - CORE_ADDR address, struct value *dval0) + If not KEEP_DYNAMIC_FIELDS, then all fields whose position or + length are not statically known are discarded. As a consequence, + VALADDR, ADDRESS and DVAL0 are ignored. + + NOTE: Limitations: For now, we assume that dynamic fields and + variants occupy whole numbers of bytes. However, they need not be + byte-aligned. */ + +struct type * +ada_template_to_fixed_record_type_1 (struct type *type, char *valaddr, + CORE_ADDR address, struct value *dval0, + int keep_dynamic_fields) { struct value *mark = value_mark (); struct value *dval; struct type *rtype; int nfields, bit_len; + int variant_field; long off; + int fld_bit_len, bit_incr; int f; - nfields = TYPE_NFIELDS (type); + /* Compute the number of fields in this record type that are going + to be processed: unless keep_dynamic_fields, this includes only + fields whose position and length are static will be processed. */ + if (keep_dynamic_fields) + nfields = TYPE_NFIELDS (type); + else + { + nfields = 0; + while (nfields < TYPE_NFIELDS (type) + && !ada_is_variant_part (type, nfields) + && !is_dynamic_field (type, nfields)) + nfields++; + } + rtype = alloc_type (TYPE_OBJFILE (type)); TYPE_CODE (rtype) = TYPE_CODE_STRUCT; INIT_CPLUS_SPECIFIC (rtype); @@ -5963,83 +7591,100 @@ template_to_fixed_record_type (struct type *type, char *valaddr, memset (TYPE_FIELDS (rtype), 0, sizeof (struct field) * nfields); TYPE_NAME (rtype) = ada_type_name (type); TYPE_TAG_NAME (rtype) = NULL; - /* FIXME: TYPE_FLAG_FIXED_INSTANCE should be defined in - gdbtypes.h */ - /* TYPE_FLAGS (rtype) |= TYPE_FLAG_FIXED_INSTANCE; */ + TYPE_FLAGS (rtype) |= TYPE_FLAG_FIXED_INSTANCE; off = 0; bit_len = 0; + variant_field = -1; + for (f = 0; f < nfields; f += 1) { - int fld_bit_len, bit_incr; off = - align_value (off, - field_alignment (type, f)) + TYPE_FIELD_BITPOS (type, f); - /* NOTE: used to use field_offset above, but that causes - * problems with really negative bit positions. So, let's - * rediscover why we needed field_offset and fix it properly. */ + align_value (off, + field_alignment (type, f)) + TYPE_FIELD_BITPOS (type, f); TYPE_FIELD_BITPOS (rtype, f) = off; TYPE_FIELD_BITSIZE (rtype, f) = 0; - TYPE_FIELD_STATIC_KIND (rtype, f) = 0; if (ada_is_variant_part (type, f)) - { - struct type *branch_type; - - if (dval0 == NULL) - dval = value_from_contents_and_address (rtype, valaddr, address); - else - dval = dval0; - - branch_type = - to_fixed_variant_branch_type - (TYPE_FIELD_TYPE (type, f), - cond_offset_host (valaddr, off / TARGET_CHAR_BIT), - cond_offset_target (address, off / TARGET_CHAR_BIT), dval); - if (branch_type == NULL) - TYPE_NFIELDS (rtype) -= 1; - else - { - TYPE_FIELD_TYPE (rtype, f) = branch_type; - TYPE_FIELD_NAME (rtype, f) = "S"; - } - bit_incr = 0; - fld_bit_len = - TYPE_LENGTH (TYPE_FIELD_TYPE (rtype, f)) * TARGET_CHAR_BIT; - } + { + variant_field = f; + fld_bit_len = bit_incr = 0; + } else if (is_dynamic_field (type, f)) - { - if (dval0 == NULL) - dval = value_from_contents_and_address (rtype, valaddr, address); - else - dval = dval0; - - TYPE_FIELD_TYPE (rtype, f) = - ada_to_fixed_type - (ada_get_base_type - (TYPE_TARGET_TYPE (TYPE_FIELD_TYPE (type, f))), - cond_offset_host (valaddr, off / TARGET_CHAR_BIT), - cond_offset_target (address, off / TARGET_CHAR_BIT), dval); - TYPE_FIELD_NAME (rtype, f) = TYPE_FIELD_NAME (type, f); - bit_incr = fld_bit_len = - TYPE_LENGTH (TYPE_FIELD_TYPE (rtype, f)) * TARGET_CHAR_BIT; - } + { + if (dval0 == NULL) + dval = value_from_contents_and_address (rtype, valaddr, address); + else + dval = dval0; + + TYPE_FIELD_TYPE (rtype, f) = + ada_to_fixed_type + (ada_get_base_type + (TYPE_TARGET_TYPE (TYPE_FIELD_TYPE (type, f))), + cond_offset_host (valaddr, off / TARGET_CHAR_BIT), + cond_offset_target (address, off / TARGET_CHAR_BIT), dval); + TYPE_FIELD_NAME (rtype, f) = TYPE_FIELD_NAME (type, f); + bit_incr = fld_bit_len = + TYPE_LENGTH (TYPE_FIELD_TYPE (rtype, f)) * TARGET_CHAR_BIT; + } else - { - TYPE_FIELD_TYPE (rtype, f) = TYPE_FIELD_TYPE (type, f); - TYPE_FIELD_NAME (rtype, f) = TYPE_FIELD_NAME (type, f); - if (TYPE_FIELD_BITSIZE (type, f) > 0) - bit_incr = fld_bit_len = - TYPE_FIELD_BITSIZE (rtype, f) = TYPE_FIELD_BITSIZE (type, f); - else - bit_incr = fld_bit_len = - TYPE_LENGTH (TYPE_FIELD_TYPE (type, f)) * TARGET_CHAR_BIT; - } + { + TYPE_FIELD_TYPE (rtype, f) = TYPE_FIELD_TYPE (type, f); + TYPE_FIELD_NAME (rtype, f) = TYPE_FIELD_NAME (type, f); + if (TYPE_FIELD_BITSIZE (type, f) > 0) + bit_incr = fld_bit_len = + TYPE_FIELD_BITSIZE (rtype, f) = TYPE_FIELD_BITSIZE (type, f); + else + bit_incr = fld_bit_len = + TYPE_LENGTH (TYPE_FIELD_TYPE (type, f)) * TARGET_CHAR_BIT; + } if (off + fld_bit_len > bit_len) - bit_len = off + fld_bit_len; + bit_len = off + fld_bit_len; off += bit_incr; - TYPE_LENGTH (rtype) = bit_len / TARGET_CHAR_BIT; + TYPE_LENGTH (rtype) = + align_value (bit_len, TARGET_CHAR_BIT) / TARGET_CHAR_BIT; } + + /* We handle the variant part, if any, at the end because of certain + odd cases in which it is re-ordered so as NOT the last field of + the record. This can happen in the presence of representation + clauses. */ + if (variant_field >= 0) + { + struct type *branch_type; + + off = TYPE_FIELD_BITPOS (rtype, variant_field); + + if (dval0 == NULL) + dval = value_from_contents_and_address (rtype, valaddr, address); + else + dval = dval0; + + branch_type = + to_fixed_variant_branch_type + (TYPE_FIELD_TYPE (type, variant_field), + cond_offset_host (valaddr, off / TARGET_CHAR_BIT), + cond_offset_target (address, off / TARGET_CHAR_BIT), dval); + if (branch_type == NULL) + { + for (f = variant_field + 1; f < TYPE_NFIELDS (rtype); f += 1) + TYPE_FIELDS (rtype)[f - 1] = TYPE_FIELDS (rtype)[f]; + TYPE_NFIELDS (rtype) -= 1; + } + else + { + TYPE_FIELD_TYPE (rtype, variant_field) = branch_type; + TYPE_FIELD_NAME (rtype, variant_field) = "S"; + fld_bit_len = + TYPE_LENGTH (TYPE_FIELD_TYPE (rtype, variant_field)) * + TARGET_CHAR_BIT; + if (off + fld_bit_len > bit_len) + bit_len = off + fld_bit_len; + TYPE_LENGTH (rtype) = + align_value (bit_len, TARGET_CHAR_BIT) / TARGET_CHAR_BIT; + } + } + TYPE_LENGTH (rtype) = align_value (TYPE_LENGTH (rtype), TYPE_LENGTH (type)); value_free_to_mark (mark); @@ -6048,148 +7693,177 @@ template_to_fixed_record_type (struct type *type, char *valaddr, return rtype; } -/* As for template_to_fixed_record_type, but uses no run-time values. - As a result, this type can only be approximate, but that's OK, - since it is used only for type determinations. Works on both - structs and unions. - Representation note: to save space, we memoize the result of this - function in the TYPE_TARGET_TYPE of the template type. */ +/* As for ada_template_to_fixed_record_type_1 with KEEP_DYNAMIC_FIELDS + of 1. */ static struct type * -template_to_static_fixed_type (struct type *templ_type) +template_to_fixed_record_type (struct type *type, char *valaddr, + CORE_ADDR address, struct value *dval0) +{ + return ada_template_to_fixed_record_type_1 (type, valaddr, + address, dval0, 1); +} + +/* An ordinary record type in which ___XVL-convention fields and + ___XVU- and ___XVN-convention field types in TYPE0 are replaced with + static approximations, containing all possible fields. Uses + no runtime values. Useless for use in values, but that's OK, + since the results are used only for type determinations. Works on both + structs and unions. Representation note: to save space, we memorize + the result of this function in the TYPE_TARGET_TYPE of the + template type. */ + +static struct type * +template_to_static_fixed_type (struct type *type0) { struct type *type; int nfields; int f; - if (TYPE_TARGET_TYPE (templ_type) != NULL) - return TYPE_TARGET_TYPE (templ_type); - - nfields = TYPE_NFIELDS (templ_type); - TYPE_TARGET_TYPE (templ_type) = type = - alloc_type (TYPE_OBJFILE (templ_type)); - TYPE_CODE (type) = TYPE_CODE (templ_type); - INIT_CPLUS_SPECIFIC (type); - TYPE_NFIELDS (type) = nfields; - TYPE_FIELDS (type) = (struct field *) - TYPE_ALLOC (type, nfields * sizeof (struct field)); - memset (TYPE_FIELDS (type), 0, sizeof (struct field) * nfields); - TYPE_NAME (type) = ada_type_name (templ_type); - TYPE_TAG_NAME (type) = NULL; - /* FIXME: TYPE_FLAG_FIXED_INSTANCE should be defined in gdbtypes.h */ - /* TYPE_FLAGS (type) |= TYPE_FLAG_FIXED_INSTANCE; */ - TYPE_LENGTH (type) = 0; + if (TYPE_TARGET_TYPE (type0) != NULL) + return TYPE_TARGET_TYPE (type0); + + nfields = TYPE_NFIELDS (type0); + type = type0; for (f = 0; f < nfields; f += 1) { - TYPE_FIELD_BITPOS (type, f) = 0; - TYPE_FIELD_BITSIZE (type, f) = 0; - TYPE_FIELD_STATIC_KIND (type, f) = 0; + struct type *field_type = CHECK_TYPEDEF (TYPE_FIELD_TYPE (type0, f)); + struct type *new_type; - if (is_dynamic_field (templ_type, f)) - { - TYPE_FIELD_TYPE (type, f) = - to_static_fixed_type (TYPE_TARGET_TYPE - (TYPE_FIELD_TYPE (templ_type, f))); - TYPE_FIELD_NAME (type, f) = TYPE_FIELD_NAME (templ_type, f); - } + if (is_dynamic_field (type0, f)) + new_type = to_static_fixed_type (TYPE_TARGET_TYPE (field_type)); else - { - TYPE_FIELD_TYPE (type, f) = - check_typedef (TYPE_FIELD_TYPE (templ_type, f)); - TYPE_FIELD_NAME (type, f) = TYPE_FIELD_NAME (templ_type, f); - } + new_type = to_static_fixed_type (field_type); + if (type == type0 && new_type != field_type) + { + TYPE_TARGET_TYPE (type0) = type = alloc_type (TYPE_OBJFILE (type0)); + TYPE_CODE (type) = TYPE_CODE (type0); + INIT_CPLUS_SPECIFIC (type); + TYPE_NFIELDS (type) = nfields; + TYPE_FIELDS (type) = (struct field *) + TYPE_ALLOC (type, nfields * sizeof (struct field)); + memcpy (TYPE_FIELDS (type), TYPE_FIELDS (type0), + sizeof (struct field) * nfields); + TYPE_NAME (type) = ada_type_name (type0); + TYPE_TAG_NAME (type) = NULL; + TYPE_FLAGS (type) |= TYPE_FLAG_FIXED_INSTANCE; + TYPE_LENGTH (type) = 0; + } + TYPE_FIELD_TYPE (type, f) = new_type; + TYPE_FIELD_NAME (type, f) = TYPE_FIELD_NAME (type0, f); } - return type; } -/* A revision of TYPE0 -- a non-dynamic-sized record with a variant - part -- in which the variant part is replaced with the appropriate - branch. */ +/* Given an object of type TYPE whose contents are at VALADDR and + whose address in memory is ADDRESS, returns a revision of TYPE -- + a non-dynamic-sized record with a variant part -- in which + the variant part is replaced with the appropriate branch. Looks + for discriminant values in DVAL0, which can be NULL if the record + contains the necessary discriminant values. */ + static struct type * to_record_with_fixed_variant_part (struct type *type, char *valaddr, - CORE_ADDR address, struct value *dval) + CORE_ADDR address, struct value *dval0) { struct value *mark = value_mark (); + struct value *dval; struct type *rtype; struct type *branch_type; int nfields = TYPE_NFIELDS (type); + int variant_field = variant_field_index (type); - if (dval == NULL) + if (variant_field == -1) return type; + if (dval0 == NULL) + dval = value_from_contents_and_address (type, valaddr, address); + else + dval = dval0; + rtype = alloc_type (TYPE_OBJFILE (type)); TYPE_CODE (rtype) = TYPE_CODE_STRUCT; - INIT_CPLUS_SPECIFIC (type); - TYPE_NFIELDS (rtype) = TYPE_NFIELDS (type); + INIT_CPLUS_SPECIFIC (rtype); + TYPE_NFIELDS (rtype) = nfields; TYPE_FIELDS (rtype) = (struct field *) TYPE_ALLOC (rtype, nfields * sizeof (struct field)); memcpy (TYPE_FIELDS (rtype), TYPE_FIELDS (type), - sizeof (struct field) * nfields); + sizeof (struct field) * nfields); TYPE_NAME (rtype) = ada_type_name (type); TYPE_TAG_NAME (rtype) = NULL; - /* FIXME: TYPE_FLAG_FIXED_INSTANCE should be defined in gdbtypes.h */ - /* TYPE_FLAGS (rtype) |= TYPE_FLAG_FIXED_INSTANCE; */ + TYPE_FLAGS (rtype) |= TYPE_FLAG_FIXED_INSTANCE; TYPE_LENGTH (rtype) = TYPE_LENGTH (type); - branch_type = - to_fixed_variant_branch_type - (TYPE_FIELD_TYPE (type, nfields - 1), + branch_type = to_fixed_variant_branch_type + (TYPE_FIELD_TYPE (type, variant_field), cond_offset_host (valaddr, - TYPE_FIELD_BITPOS (type, - nfields - 1) / TARGET_CHAR_BIT), + TYPE_FIELD_BITPOS (type, variant_field) + / TARGET_CHAR_BIT), cond_offset_target (address, - TYPE_FIELD_BITPOS (type, - nfields - 1) / TARGET_CHAR_BIT), - dval); + TYPE_FIELD_BITPOS (type, variant_field) + / TARGET_CHAR_BIT), dval); if (branch_type == NULL) { + int f; + for (f = variant_field + 1; f < nfields; f += 1) + TYPE_FIELDS (rtype)[f - 1] = TYPE_FIELDS (rtype)[f]; TYPE_NFIELDS (rtype) -= 1; - TYPE_LENGTH (rtype) -= - TYPE_LENGTH (TYPE_FIELD_TYPE (type, nfields - 1)); } else { - TYPE_FIELD_TYPE (rtype, nfields - 1) = branch_type; - TYPE_FIELD_NAME (rtype, nfields - 1) = "S"; - TYPE_FIELD_BITSIZE (rtype, nfields - 1) = 0; - TYPE_FIELD_STATIC_KIND (rtype, nfields - 1) = 0; + TYPE_FIELD_TYPE (rtype, variant_field) = branch_type; + TYPE_FIELD_NAME (rtype, variant_field) = "S"; + TYPE_FIELD_BITSIZE (rtype, variant_field) = 0; TYPE_LENGTH (rtype) += TYPE_LENGTH (branch_type); - -TYPE_LENGTH (TYPE_FIELD_TYPE (type, nfields - 1)); } + TYPE_LENGTH (rtype) -= TYPE_LENGTH (TYPE_FIELD_TYPE (type, variant_field)); + value_free_to_mark (mark); return rtype; } /* An ordinary record type (with fixed-length fields) that describes the value at (TYPE0, VALADDR, ADDRESS) [see explanation at beginning of this section]. Any necessary discriminants' values - should be in DVAL, a record value; it should be NULL if the object - at ADDR itself contains any necessary discriminant values. A - variant field (unless unchecked) is replaced by a particular branch - of the variant. */ + should be in DVAL, a record value; it may be NULL if the object + at ADDR itself contains any necessary discriminant values. + Additionally, VALADDR and ADDRESS may also be NULL if no discriminant + values from the record are needed. Except in the case that DVAL, + VALADDR, and ADDRESS are all 0 or NULL, a variant field (unless + unchecked) is replaced by a particular branch of the variant. + + NOTE: the case in which DVAL and VALADDR are NULL and ADDRESS is 0 + is questionable and may be removed. It can arise during the + processing of an unconstrained-array-of-record type where all the + variant branches have exactly the same size. This is because in + such cases, the compiler does not bother to use the XVS convention + when encoding the record. I am currently dubious of this + shortcut and suspect the compiler should be altered. FIXME. */ static struct type * -to_fixed_record_type (struct type *type0, char *valaddr, CORE_ADDR address, - struct value *dval) +to_fixed_record_type (struct type *type0, char *valaddr, + CORE_ADDR address, struct value *dval) { struct type *templ_type; - /* FIXME: TYPE_FLAG_FIXED_INSTANCE should be defined in gdbtypes.h */ - /* if (TYPE_FLAGS (type0) & TYPE_FLAG_FIXED_INSTANCE) - return type0; - */ + if (TYPE_FLAGS (type0) & TYPE_FLAG_FIXED_INSTANCE) + return type0; + templ_type = dynamic_template_type (type0); if (templ_type != NULL) return template_to_fixed_record_type (templ_type, valaddr, address, dval); - else if (contains_variant_part (type0)) - return to_record_with_fixed_variant_part (type0, valaddr, address, dval); + else if (variant_field_index (type0) >= 0) + { + if (dval == NULL && valaddr == NULL && address == 0) + return type0; + return to_record_with_fixed_variant_part (type0, valaddr, address, + dval); + } else { - /* FIXME: TYPE_FLAG_FIXED_INSTANCE should be defined in gdbtypes.h */ - /* TYPE_FLAGS (type0) |= TYPE_FLAG_FIXED_INSTANCE; */ + TYPE_FLAGS (type0) |= TYPE_FLAG_FIXED_INSTANCE; return type0; } @@ -6200,11 +7874,11 @@ to_fixed_record_type (struct type *type0, char *valaddr, CORE_ADDR address, union type. Any necessary discriminants' values should be in DVAL, a record value. That is, this routine selects the appropriate branch of the union at ADDR according to the discriminant value - indicated in the union's type name. */ + indicated in the union's type name. */ static struct type * to_fixed_variant_branch_type (struct type *var_type0, char *valaddr, - CORE_ADDR address, struct value *dval) + CORE_ADDR address, struct value *dval) { int which; struct type *templ_type; @@ -6222,16 +7896,15 @@ to_fixed_variant_branch_type (struct type *var_type0, char *valaddr, which = ada_which_variant_applies (var_type, - VALUE_TYPE (dval), VALUE_CONTENTS (dval)); + VALUE_TYPE (dval), VALUE_CONTENTS (dval)); if (which < 0) return empty_record (TYPE_OBJFILE (var_type)); else if (is_dynamic_field (var_type, which)) - return - to_fixed_record_type + return to_fixed_record_type (TYPE_TARGET_TYPE (TYPE_FIELD_TYPE (var_type, which)), valaddr, address, dval); - else if (contains_variant_part (TYPE_FIELD_TYPE (var_type, which))) + else if (variant_field_index (TYPE_FIELD_TYPE (var_type, which)) >= 0) return to_fixed_record_type (TYPE_FIELD_TYPE (var_type, which), valaddr, address, dval); @@ -6245,35 +7918,33 @@ to_fixed_variant_branch_type (struct type *var_type0, char *valaddr, contains no dynamic components (that is, no components whose sizes are determined by run-time quantities). Unless IGNORE_TOO_BIG is true, gives an error message if the resulting type's size is over - varsize_limit. -*/ + varsize_limit. */ static struct type * to_fixed_array_type (struct type *type0, struct value *dval, - int ignore_too_big) + int ignore_too_big) { struct type *index_type_desc; struct type *result; - /* FIXME: TYPE_FLAG_FIXED_INSTANCE should be defined in gdbtypes.h */ -/* if (ada_is_packed_array_type (type0) /* revisit? *//* - || (TYPE_FLAGS (type0) & TYPE_FLAG_FIXED_INSTANCE)) - return type0; */ + if (ada_is_packed_array_type (type0) /* revisit? */ + || (TYPE_FLAGS (type0) & TYPE_FLAG_FIXED_INSTANCE)) + return type0; index_type_desc = ada_find_parallel_type (type0, "___XA"); if (index_type_desc == NULL) { struct type *elt_type0 = check_typedef (TYPE_TARGET_TYPE (type0)); /* NOTE: elt_type---the fixed version of elt_type0---should never - * depend on the contents of the array in properly constructed - * debugging data. */ + depend on the contents of the array in properly constructed + debugging data. */ struct type *elt_type = ada_to_fixed_type (elt_type0, 0, 0, dval); if (elt_type0 == elt_type) - result = type0; + result = type0; else - result = create_array_type (alloc_type (TYPE_OBJFILE (type0)), - elt_type, TYPE_INDEX_TYPE (type0)); + result = create_array_type (alloc_type (TYPE_OBJFILE (type0)), + elt_type, TYPE_INDEX_TYPE (type0)); } else { @@ -6282,26 +7953,25 @@ to_fixed_array_type (struct type *type0, struct value *dval, elt_type0 = type0; for (i = TYPE_NFIELDS (index_type_desc); i > 0; i -= 1) - elt_type0 = TYPE_TARGET_TYPE (elt_type0); + elt_type0 = TYPE_TARGET_TYPE (elt_type0); /* NOTE: result---the fixed version of elt_type0---should never - * depend on the contents of the array in properly constructed - * debugging data. */ + depend on the contents of the array in properly constructed + debugging data. */ result = ada_to_fixed_type (check_typedef (elt_type0), 0, 0, dval); for (i = TYPE_NFIELDS (index_type_desc) - 1; i >= 0; i -= 1) - { - struct type *range_type = - to_fixed_range_type (TYPE_FIELD_NAME (index_type_desc, i), - dval, TYPE_OBJFILE (type0)); - result = create_array_type (alloc_type (TYPE_OBJFILE (type0)), - result, range_type); - } + { + struct type *range_type = + to_fixed_range_type (TYPE_FIELD_NAME (index_type_desc, i), + dval, TYPE_OBJFILE (type0)); + result = create_array_type (alloc_type (TYPE_OBJFILE (type0)), + result, range_type); + } if (!ignore_too_big && TYPE_LENGTH (result) > varsize_limit) - error ("array type with dynamic size is larger than varsize-limit"); + error ("array type with dynamic size is larger than varsize-limit"); } -/* FIXME: TYPE_FLAG_FIXED_INSTANCE should be defined in gdbtypes.h */ -/* TYPE_FLAGS (result) |= TYPE_FLAG_FIXED_INSTANCE; */ + TYPE_FLAGS (result) |= TYPE_FLAG_FIXED_INSTANCE; return result; } @@ -6309,11 +7979,12 @@ to_fixed_array_type (struct type *type0, struct value *dval, /* A standard type (containing no dynamically sized components) corresponding to TYPE for the value (TYPE, VALADDR, ADDRESS) DVAL describes a record containing any discriminants used in TYPE0, - and may be NULL if there are none. */ + and may be NULL if there are none, or if the object of type TYPE at + ADDRESS or in VALADDR contains these discriminants. */ struct type * -ada_to_fixed_type (struct type *type, char *valaddr, CORE_ADDR address, - struct value *dval) +ada_to_fixed_type (struct type *type, char *valaddr, + CORE_ADDR address, struct value *dval) { CHECK_TYPEDEF (type); switch (TYPE_CODE (type)) @@ -6321,19 +7992,31 @@ ada_to_fixed_type (struct type *type, char *valaddr, CORE_ADDR address, default: return type; case TYPE_CODE_STRUCT: - return to_fixed_record_type (type, valaddr, address, NULL); + { + struct type *static_type = to_static_fixed_type (type); + if (ada_is_tagged_type (static_type, 0)) + { + struct type *real_type = + type_from_tag (value_tag_from_contents_and_address (static_type, + valaddr, + address)); + if (real_type != NULL) + type = real_type; + } + return to_fixed_record_type (type, valaddr, address, NULL); + } case TYPE_CODE_ARRAY: - return to_fixed_array_type (type, dval, 0); + return to_fixed_array_type (type, dval, 1); case TYPE_CODE_UNION: if (dval == NULL) - return type; + return type; else - return to_fixed_variant_branch_type (type, valaddr, address, dval); + return to_fixed_variant_branch_type (type, valaddr, address, dval); } } /* A standard (static-sized) type corresponding as well as possible to - TYPE0, but based on no runtime data. */ + TYPE0, but based on no runtime data. */ static struct type * to_static_fixed_type (struct type *type0) @@ -6343,10 +8026,9 @@ to_static_fixed_type (struct type *type0) if (type0 == NULL) return NULL; - /* FIXME: TYPE_FLAG_FIXED_INSTANCE should be defined in gdbtypes.h */ - /* if (TYPE_FLAGS (type0) & TYPE_FLAG_FIXED_INSTANCE) - return type0; - */ + if (TYPE_FLAGS (type0) & TYPE_FLAG_FIXED_INSTANCE) + return type0; + CHECK_TYPEDEF (type0); switch (TYPE_CODE (type0)) @@ -6356,17 +8038,20 @@ to_static_fixed_type (struct type *type0) case TYPE_CODE_STRUCT: type = dynamic_template_type (type0); if (type != NULL) - return template_to_static_fixed_type (type); - return type0; + return template_to_static_fixed_type (type); + else + return template_to_static_fixed_type (type0); case TYPE_CODE_UNION: type = ada_find_parallel_type (type0, "___XVU"); if (type != NULL) - return template_to_static_fixed_type (type); - return type0; + return template_to_static_fixed_type (type); + else + return template_to_static_fixed_type (type0); } } -/* A static approximation of TYPE with all type wrappers removed. */ +/* A static approximation of TYPE with all type wrappers removed. */ + static struct type * static_unwrap_type (struct type *type) { @@ -6374,7 +8059,7 @@ static_unwrap_type (struct type *type) { struct type *type1 = TYPE_FIELD_TYPE (check_typedef (type), 0); if (ada_type_name (type1) == NULL) - TYPE_NAME (type1) = ada_type_name (type); + TYPE_NAME (type1) = ada_type_name (type); return static_unwrap_type (type1); } @@ -6382,25 +8067,26 @@ static_unwrap_type (struct type *type) { struct type *raw_real_type = ada_get_base_type (type); if (raw_real_type == type) - return type; + return type; else - return to_static_fixed_type (raw_real_type); + return to_static_fixed_type (raw_real_type); } } /* In some cases, incomplete and private types require - cross-references that are not resolved as records (for example, + cross-references that are not resolved as records (for example, type Foo; type FooP is access Foo; V: FooP; type Foo is array ...; - ). In these cases, since there is no mechanism for producing + ). In these cases, since there is no mechanism for producing cross-references to such types, we instead substitute for FooP a stub enumeration type that is nowhere resolved, and whose tag is - the name of the actual type. Call these types "non-record stubs". */ + the name of the actual type. Call these types "non-record stubs". */ /* A type equivalent to TYPE that is not a non-record stub, if one - exists, otherwise TYPE. */ + exists, otherwise TYPE. */ + struct type * ada_completed_type (struct type *type) { @@ -6421,23 +8107,52 @@ ada_completed_type (struct type *type) type TYPE0, but with a standard (static-sized) type that correctly describes it. If VAL0 is not NULL and TYPE0 already is a standard type, then return VAL0 [this feature is simply to avoid redundant - creation of struct values]. */ + creation of struct values]. */ -struct value * -ada_to_fixed_value (struct type *type0, char *valaddr, CORE_ADDR address, - struct value *val0) +static struct value * +ada_to_fixed_value_create (struct type *type0, CORE_ADDR address, + struct value *val0) { - struct type *type = ada_to_fixed_type (type0, valaddr, address, NULL); + struct type *type = ada_to_fixed_type (type0, 0, address, NULL); if (type == type0 && val0 != NULL) return val0; else - return value_from_contents_and_address (type, valaddr, address); + return value_from_contents_and_address (type, 0, address); } -/* A value representing VAL, but with a standard (static-sized) type +/* A value representing VAL, but with a standard (static-sized) type + that correctly describes it. Does not necessarily create a new + value. */ + +static struct value * +ada_to_fixed_value (struct value *val) +{ + return ada_to_fixed_value_create (VALUE_TYPE (val), + VALUE_ADDRESS (val) + VALUE_OFFSET (val), + val); +} + +/* If the PC is pointing inside a function prologue, then re-adjust it + past this prologue. */ + +static void +adjust_pc_past_prologue (CORE_ADDR *pc) +{ + struct symbol *func_sym = find_pc_function (*pc); + + if (func_sym) + { + const struct symtab_and_line sal = find_function_start_sal (func_sym, 1); + + if (*pc <= sal.pc) + *pc = sal.pc; + } +} + +/* A value representing VAL, but with a standard (static-sized) type chosen to approximate the real type of VAL as well as possible, but without consulting any runtime values. For Ada dynamic-sized - types, therefore, the type of the result is likely to be inaccurate. */ + types, therefore, the type of the result is likely to be inaccurate. */ struct value * ada_to_static_fixed_value (struct value *val) @@ -6447,17 +8162,14 @@ ada_to_static_fixed_value (struct value *val) if (type == VALUE_TYPE (val)) return val; else - return coerce_unspec_val_to_type (val, 0, type); + return coerce_unspec_val_to_type (val, type); } - - - /* Attributes */ -/* Table mapping attribute numbers to names */ -/* NOTE: Keep up to date with enum ada_attribute definition in ada-lang.h */ +/* Table mapping attribute numbers to names. + NOTE: Keep up to date with enum ada_attribute definition in ada-lang.h. */ static const char *attribute_names[] = { "<?>", @@ -6466,28 +8178,29 @@ static const char *attribute_names[] = { "last", "length", "image", - "img", "max", "min", - "pos" "tag", + "modulus", + "pos", + "size", + "tag", "val", - 0 }; const char * -ada_attribute_name (int n) +ada_attribute_name (enum exp_opcode n) { - if (n > 0 && n < (int) ATR_END) - return attribute_names[n]; + if (n >= OP_ATR_FIRST && n <= (int) OP_ATR_VAL) + return attribute_names[n - OP_ATR_FIRST + 1]; else return attribute_names[0]; } -/* Evaluate the 'POS attribute applied to ARG. */ +/* Evaluate the 'POS attribute applied to ARG. */ -static struct value * -value_pos_atr (struct value *arg) +static LONGEST +pos_atr (struct value *arg) { struct type *type = VALUE_TYPE (arg); @@ -6500,17 +8213,23 @@ value_pos_atr (struct value *arg) LONGEST v = value_as_long (arg); for (i = 0; i < TYPE_NFIELDS (type); i += 1) - { - if (v == TYPE_FIELD_BITPOS (type, i)) - return value_from_longest (builtin_type_ada_int, i); - } + { + if (v == TYPE_FIELD_BITPOS (type, i)) + return i; + } error ("enumeration value is invalid: can't find 'POS"); } else - return value_from_longest (builtin_type_ada_int, value_as_long (arg)); + return value_as_long (arg); } -/* Evaluate the TYPE'VAL attribute applied to ARG. */ +static struct value * +value_pos_atr (struct value *arg) +{ + return value_from_longest (builtin_type_ada_int, pos_atr (arg)); +} + +/* Evaluate the TYPE'VAL attribute applied to ARG. */ static struct value * value_val_atr (struct type *type, struct value *arg) @@ -6524,7 +8243,7 @@ value_val_atr (struct type *type, struct value *arg) { long pos = value_as_long (arg); if (pos < 0 || pos >= TYPE_NFIELDS (type)) - error ("argument to 'VAL out of range"); + error ("argument to 'VAL out of range"); return value_from_longest (type, TYPE_FIELD_BITPOS (type, pos)); } else @@ -6532,11 +8251,11 @@ value_val_atr (struct type *type, struct value *arg) } - /* Evaluation */ + /* Evaluation */ -/* True if TYPE appears to be an Ada character type. - * [At the moment, this is true only for Character and Wide_Character; - * It is a heuristic test that could stand improvement]. */ +/* True if TYPE appears to be an Ada character type. + [At the moment, this is true only for Character and Wide_Character; + It is a heuristic test that could stand improvement]. */ int ada_is_character_type (struct type *type) @@ -6545,13 +8264,14 @@ ada_is_character_type (struct type *type) return name != NULL && (TYPE_CODE (type) == TYPE_CODE_CHAR - || TYPE_CODE (type) == TYPE_CODE_INT - || TYPE_CODE (type) == TYPE_CODE_RANGE) - && (DEPRECATED_STREQ (name, "character") || DEPRECATED_STREQ (name, "wide_character") - || DEPRECATED_STREQ (name, "unsigned char")); + || TYPE_CODE (type) == TYPE_CODE_INT + || TYPE_CODE (type) == TYPE_CODE_RANGE) + && (strcmp (name, "character") == 0 + || strcmp (name, "wide_character") == 0 + || strcmp (name, "unsigned char") == 0); } -/* True if TYPE appears to be an Ada string type. */ +/* True if TYPE appears to be an Ada string type. */ int ada_is_string_type (struct type *type) @@ -6559,7 +8279,7 @@ ada_is_string_type (struct type *type) CHECK_TYPEDEF (type); if (type != NULL && TYPE_CODE (type) != TYPE_CODE_PTR - && (ada_is_simple_array (type) || ada_is_array_descriptor (type)) + && (ada_is_simple_array_type (type) || ada_is_array_descriptor_type (type)) && ada_array_arity (type) == 1) { struct type *elttype = ada_array_element_type (type, 1); @@ -6573,26 +8293,25 @@ ada_is_string_type (struct type *type) /* True if TYPE is a struct type introduced by the compiler to force the alignment of a value. Such types have a single field with a - distinctive name. */ + distinctive name. */ int ada_is_aligner_type (struct type *type) { CHECK_TYPEDEF (type); return (TYPE_CODE (type) == TYPE_CODE_STRUCT - && TYPE_NFIELDS (type) == 1 - && DEPRECATED_STREQ (TYPE_FIELD_NAME (type, 0), "F")); + && TYPE_NFIELDS (type) == 1 + && strcmp (TYPE_FIELD_NAME (type, 0), "F") == 0); } /* If there is an ___XVS-convention type parallel to SUBTYPE, return - the parallel type. */ + the parallel type. */ struct type * ada_get_base_type (struct type *raw_type) { struct type *real_type_namer; struct type *raw_real_type; - struct type *real_type; if (raw_type == NULL || TYPE_CODE (raw_type) != TYPE_CODE_STRUCT) return raw_type; @@ -6610,7 +8329,7 @@ ada_get_base_type (struct type *raw_type) return raw_real_type; } -/* The type of value designated by TYPE, with all aligners removed. */ +/* The type of value designated by TYPE, with all aligners removed. */ struct type * ada_aligned_type (struct type *type) @@ -6623,82 +8342,110 @@ ada_aligned_type (struct type *type) /* The address of the aligned value in an object at address VALADDR - having type TYPE. Assumes ada_is_aligner_type (TYPE). */ + having type TYPE. Assumes ada_is_aligner_type (TYPE). */ char * ada_aligned_value_addr (struct type *type, char *valaddr) { if (ada_is_aligner_type (type)) return ada_aligned_value_addr (TYPE_FIELD_TYPE (type, 0), - valaddr + - TYPE_FIELD_BITPOS (type, - 0) / TARGET_CHAR_BIT); + valaddr + + TYPE_FIELD_BITPOS (type, + 0) / TARGET_CHAR_BIT); else return valaddr; } + + /* The printed representation of an enumeration literal with encoded - name NAME. The value is good to the next call of ada_enum_name. */ + name NAME. The value is good to the next call of ada_enum_name. */ const char * ada_enum_name (const char *name) { + static char *result; + static size_t result_len = 0; char *tmp; - while (1) + /* First, unqualify the enumeration name: + 1. Search for the last '.' character. If we find one, then skip + all the preceeding characters, the unqualified name starts + right after that dot. + 2. Otherwise, we may be debugging on a target where the compiler + translates dots into "__". Search forward for double underscores, + but stop searching when we hit an overloading suffix, which is + of the form "__" followed by digits. */ + + if ((tmp = strrchr (name, '.')) != NULL) + name = tmp + 1; + else { - if ((tmp = strstr (name, "__")) != NULL) - name = tmp + 2; - else if ((tmp = strchr (name, '.')) != NULL) - name = tmp + 1; - else - break; + while ((tmp = strstr (name, "__")) != NULL) + { + if (isdigit (tmp[2])) + break; + else + name = tmp + 2; + } } if (name[0] == 'Q') { - static char result[16]; int v; if (name[1] == 'U' || name[1] == 'W') - { - if (sscanf (name + 2, "%x", &v) != 1) - return name; - } + { + if (sscanf (name + 2, "%x", &v) != 1) + return name; + } else - return name; + return name; + GROW_VECT (result, result_len, 16); if (isascii (v) && isprint (v)) - sprintf (result, "'%c'", v); + sprintf (result, "'%c'", v); else if (name[1] == 'U') - sprintf (result, "[\"%02x\"]", v); + sprintf (result, "[\"%02x\"]", v); else - sprintf (result, "[\"%04x\"]", v); + sprintf (result, "[\"%04x\"]", v); return result; } else - return name; + { + if ((tmp = strstr (name, "__")) != NULL + || (tmp = strstr (name, "$")) != NULL) + { + GROW_VECT (result, result_len, tmp - name + 1); + strncpy (result, name, tmp - name); + result[tmp - name] = '\0'; + return result; + } + + return name; + } } static struct value * evaluate_subexp (struct type *expect_type, struct expression *exp, int *pos, - enum noside noside) + enum noside noside) { - return (*exp->language_defn->evaluate_exp) (expect_type, exp, pos, noside); + return (*exp->language_defn->la_exp_desc->evaluate_exp) + (expect_type, exp, pos, noside); } /* Evaluate the subexpression of EXP starting at *POS as for evaluate_type, updating *POS to point just past the evaluated - expression. */ + expression. */ static struct value * evaluate_subexp_type (struct expression *exp, int *pos) { - return (*exp->language_defn->evaluate_exp) + return (*exp->language_defn->la_exp_desc->evaluate_exp) (NULL_TYPE, exp, pos, EVAL_AVOID_SIDE_EFFECTS); } /* If VAL is wrapped in an aligner or subtype wrapper, return the - value it wraps. */ + value it wraps. */ static struct value * unwrap_value (struct value *val) @@ -6707,26 +8454,26 @@ unwrap_value (struct value *val) if (ada_is_aligner_type (type)) { struct value *v = value_struct_elt (&val, NULL, "F", - NULL, "internal structure"); + NULL, "internal structure"); struct type *val_type = check_typedef (VALUE_TYPE (v)); if (ada_type_name (val_type) == NULL) - TYPE_NAME (val_type) = ada_type_name (type); + TYPE_NAME (val_type) = ada_type_name (type); return unwrap_value (v); } else { struct type *raw_real_type = - ada_completed_type (ada_get_base_type (type)); + ada_completed_type (ada_get_base_type (type)); if (type == raw_real_type) - return val; + return val; return - coerce_unspec_val_to_type - (val, 0, ada_to_fixed_type (raw_real_type, 0, - VALUE_ADDRESS (val) + VALUE_OFFSET (val), - NULL)); + coerce_unspec_val_to_type + (val, ada_to_fixed_type (raw_real_type, 0, + VALUE_ADDRESS (val) + VALUE_OFFSET (val), + NULL)); } } @@ -6739,12 +8486,12 @@ cast_to_fixed (struct type *type, struct value *arg) return arg; else if (ada_is_fixed_point_type (VALUE_TYPE (arg))) val = ada_float_to_fixed (type, - ada_fixed_to_float (VALUE_TYPE (arg), - value_as_long (arg))); + ada_fixed_to_float (VALUE_TYPE (arg), + value_as_long (arg))); else { DOUBLEST argd = - value_as_double (value_cast (builtin_type_double, value_copy (arg))); + value_as_double (value_cast (builtin_type_double, value_copy (arg))); val = ada_float_to_fixed (type, argd); } @@ -6755,12 +8502,13 @@ static struct value * cast_from_fixed_to_double (struct value *arg) { DOUBLEST val = ada_fixed_to_float (VALUE_TYPE (arg), - value_as_long (arg)); + value_as_long (arg)); return value_from_double (builtin_type_double, val); } -/* Coerce VAL as necessary for assignment to an lval of type TYPE, and - * return the converted value. */ +/* Coerce VAL as necessary for assignment to an lval of type TYPE, and + return the converted value. */ + static struct value * coerce_for_assign (struct type *type, struct value *val) { @@ -6782,20 +8530,98 @@ coerce_for_assign (struct type *type, struct value *val) && TYPE_CODE (type) == TYPE_CODE_ARRAY) { if (TYPE_LENGTH (type2) != TYPE_LENGTH (type) - || TYPE_LENGTH (TYPE_TARGET_TYPE (type2)) - != TYPE_LENGTH (TYPE_TARGET_TYPE (type2))) - error ("Incompatible types in assignment"); + || TYPE_LENGTH (TYPE_TARGET_TYPE (type2)) + != TYPE_LENGTH (TYPE_TARGET_TYPE (type2))) + error ("Incompatible types in assignment"); VALUE_TYPE (val) = type; } return val; } +static struct value * +ada_value_binop (struct value *arg1, struct value *arg2, enum exp_opcode op) +{ + struct value *val; + struct type *type1, *type2; + LONGEST v, v1, v2; + + COERCE_REF (arg1); + COERCE_REF (arg2); + type1 = base_type (check_typedef (VALUE_TYPE (arg1))); + type2 = base_type (check_typedef (VALUE_TYPE (arg2))); + + if (TYPE_CODE (type1) != TYPE_CODE_INT || TYPE_CODE (type2) != TYPE_CODE_INT) + return value_binop (arg1, arg2, op); + + switch (op) + { + case BINOP_MOD: + case BINOP_DIV: + case BINOP_REM: + break; + default: + return value_binop (arg1, arg2, op); + } + + v2 = value_as_long (arg2); + if (v2 == 0) + error ("second operand of %s must not be zero.", op_string (op)); + + if (TYPE_UNSIGNED (type1) || op == BINOP_MOD) + return value_binop (arg1, arg2, op); + + v1 = value_as_long (arg1); + switch (op) + { + case BINOP_DIV: + v = v1 / v2; + if (! TRUNCATION_TOWARDS_ZERO && v1 * (v1%v2) < 0) + v += v > 0 ? -1 : 1; + break; + case BINOP_REM: + v = v1 % v2; + if (v*v1 < 0) + v -= v2; + break; + default: + /* Should not reach this point. */ + v = 0; + } + + val = allocate_value (type1); + store_unsigned_integer (VALUE_CONTENTS_RAW (val), + TYPE_LENGTH (VALUE_TYPE (val)), + v); + return val; +} + +static int +ada_value_equal (struct value *arg1, struct value *arg2) +{ + if (ada_is_direct_array_type (VALUE_TYPE (arg1)) + || ada_is_direct_array_type (VALUE_TYPE (arg2))) + { + arg1 = ada_coerce_to_simple_array (arg1); + arg2 = ada_coerce_to_simple_array (arg2); + if (TYPE_CODE (VALUE_TYPE (arg1)) != TYPE_CODE_ARRAY + || TYPE_CODE (VALUE_TYPE (arg2)) != TYPE_CODE_ARRAY) + error ("Attempt to compare array with non-array"); + /* FIXME: The following works only for types whose + representations use all bits (no padding or undefined bits) + and do not have user-defined equality. */ + return + TYPE_LENGTH (VALUE_TYPE (arg1)) == TYPE_LENGTH (VALUE_TYPE (arg2)) + && memcmp (VALUE_CONTENTS (arg1), VALUE_CONTENTS (arg2), + TYPE_LENGTH (VALUE_TYPE (arg1))) == 0; + } + return value_equal (arg1, arg2); +} + struct value * ada_evaluate_subexp (struct type *expect_type, struct expression *exp, - int *pos, enum noside noside) + int *pos, enum noside noside) { enum exp_opcode op; - enum ada_attribute atr; int tem, tem2, tem3; int pc; struct value *arg1 = NULL, *arg2 = NULL, *arg3; @@ -6812,752 +8638,734 @@ ada_evaluate_subexp (struct type *expect_type, struct expression *exp, default: *pos -= 1; return - unwrap_value (evaluate_subexp_standard - (expect_type, exp, pos, noside)); + unwrap_value (evaluate_subexp_standard + (expect_type, exp, pos, noside)); + + case OP_STRING: + { + struct value *result; + *pos -= 1; + result = evaluate_subexp_standard (expect_type, exp, pos, noside); + /* The result type will have code OP_STRING, bashed there from + OP_ARRAY. Bash it back. */ + if (TYPE_CODE (VALUE_TYPE (result)) == TYPE_CODE_STRING) + TYPE_CODE (VALUE_TYPE (result)) = TYPE_CODE_ARRAY; + return result; + } case UNOP_CAST: (*pos) += 2; type = exp->elts[pc + 1].type; arg1 = evaluate_subexp (type, exp, pos, noside); if (noside == EVAL_SKIP) - goto nosideret; + goto nosideret; if (type != check_typedef (VALUE_TYPE (arg1))) - { - if (ada_is_fixed_point_type (type)) - arg1 = cast_to_fixed (type, arg1); - else if (ada_is_fixed_point_type (VALUE_TYPE (arg1))) - arg1 = value_cast (type, cast_from_fixed_to_double (arg1)); - else if (VALUE_LVAL (arg1) == lval_memory) - { - /* This is in case of the really obscure (and undocumented, - but apparently expected) case of (Foo) Bar.all, where Bar - is an integer constant and Foo is a dynamic-sized type. - If we don't do this, ARG1 will simply be relabeled with - TYPE. */ - if (noside == EVAL_AVOID_SIDE_EFFECTS) - return value_zero (to_static_fixed_type (type), not_lval); - arg1 = - ada_to_fixed_value - (type, 0, VALUE_ADDRESS (arg1) + VALUE_OFFSET (arg1), 0); - } - else - arg1 = value_cast (type, arg1); - } + { + if (ada_is_fixed_point_type (type)) + arg1 = cast_to_fixed (type, arg1); + else if (ada_is_fixed_point_type (VALUE_TYPE (arg1))) + arg1 = value_cast (type, cast_from_fixed_to_double (arg1)); + else if (VALUE_LVAL (arg1) == lval_memory) + { + /* This is in case of the really obscure (and undocumented, + but apparently expected) case of (Foo) Bar.all, where Bar + is an integer constant and Foo is a dynamic-sized type. + If we don't do this, ARG1 will simply be relabeled with + TYPE. */ + if (noside == EVAL_AVOID_SIDE_EFFECTS) + return value_zero (to_static_fixed_type (type), not_lval); + arg1 = + ada_to_fixed_value_create + (type, VALUE_ADDRESS (arg1) + VALUE_OFFSET (arg1), 0); + } + else + arg1 = value_cast (type, arg1); + } return arg1; - /* FIXME: UNOP_QUAL should be defined in expression.h */ - /* case UNOP_QUAL: - (*pos) += 2; - type = exp->elts[pc + 1].type; - return ada_evaluate_subexp (type, exp, pos, noside); - */ + case UNOP_QUAL: + (*pos) += 2; + type = exp->elts[pc + 1].type; + return ada_evaluate_subexp (type, exp, pos, noside); + case BINOP_ASSIGN: arg1 = evaluate_subexp (NULL_TYPE, exp, pos, noside); arg2 = evaluate_subexp (VALUE_TYPE (arg1), exp, pos, noside); if (noside == EVAL_SKIP || noside == EVAL_AVOID_SIDE_EFFECTS) - return arg1; - if (binop_user_defined_p (op, arg1, arg2)) - return value_x_binop (arg1, arg2, op, OP_NULL, EVAL_NORMAL); + return arg1; + if (ada_is_fixed_point_type (VALUE_TYPE (arg1))) + arg2 = cast_to_fixed (VALUE_TYPE (arg1), arg2); + else if (ada_is_fixed_point_type (VALUE_TYPE (arg2))) + error + ("Fixed-point values must be assigned to fixed-point variables"); else - { - if (ada_is_fixed_point_type (VALUE_TYPE (arg1))) - arg2 = cast_to_fixed (VALUE_TYPE (arg1), arg2); - else if (ada_is_fixed_point_type (VALUE_TYPE (arg2))) - error - ("Fixed-point values must be assigned to fixed-point variables"); - else - arg2 = coerce_for_assign (VALUE_TYPE (arg1), arg2); - return ada_value_assign (arg1, arg2); - } + arg2 = coerce_for_assign (VALUE_TYPE (arg1), arg2); + return ada_value_assign (arg1, arg2); case BINOP_ADD: arg1 = evaluate_subexp_with_coercion (exp, pos, noside); arg2 = evaluate_subexp_with_coercion (exp, pos, noside); if (noside == EVAL_SKIP) - goto nosideret; - if (binop_user_defined_p (op, arg1, arg2)) - return value_x_binop (arg1, arg2, op, OP_NULL, EVAL_NORMAL); - else - { - if ((ada_is_fixed_point_type (VALUE_TYPE (arg1)) - || ada_is_fixed_point_type (VALUE_TYPE (arg2))) - && VALUE_TYPE (arg1) != VALUE_TYPE (arg2)) - error - ("Operands of fixed-point addition must have the same type"); - return value_cast (VALUE_TYPE (arg1), value_add (arg1, arg2)); - } + goto nosideret; + if ((ada_is_fixed_point_type (VALUE_TYPE (arg1)) + || ada_is_fixed_point_type (VALUE_TYPE (arg2))) + && VALUE_TYPE (arg1) != VALUE_TYPE (arg2)) + error + ("Operands of fixed-point addition must have the same type"); + return value_cast (VALUE_TYPE (arg1), value_add (arg1, arg2)); case BINOP_SUB: arg1 = evaluate_subexp_with_coercion (exp, pos, noside); arg2 = evaluate_subexp_with_coercion (exp, pos, noside); if (noside == EVAL_SKIP) - goto nosideret; - if (binop_user_defined_p (op, arg1, arg2)) - return value_x_binop (arg1, arg2, op, OP_NULL, EVAL_NORMAL); - else - { - if ((ada_is_fixed_point_type (VALUE_TYPE (arg1)) - || ada_is_fixed_point_type (VALUE_TYPE (arg2))) - && VALUE_TYPE (arg1) != VALUE_TYPE (arg2)) - error - ("Operands of fixed-point subtraction must have the same type"); - return value_cast (VALUE_TYPE (arg1), value_sub (arg1, arg2)); - } + goto nosideret; + if ((ada_is_fixed_point_type (VALUE_TYPE (arg1)) + || ada_is_fixed_point_type (VALUE_TYPE (arg2))) + && VALUE_TYPE (arg1) != VALUE_TYPE (arg2)) + error + ("Operands of fixed-point subtraction must have the same type"); + return value_cast (VALUE_TYPE (arg1), value_sub (arg1, arg2)); case BINOP_MUL: case BINOP_DIV: arg1 = evaluate_subexp (NULL_TYPE, exp, pos, noside); arg2 = evaluate_subexp (NULL_TYPE, exp, pos, noside); if (noside == EVAL_SKIP) - goto nosideret; - if (binop_user_defined_p (op, arg1, arg2)) - return value_x_binop (arg1, arg2, op, OP_NULL, EVAL_NORMAL); + goto nosideret; + else if (noside == EVAL_AVOID_SIDE_EFFECTS + && (op == BINOP_DIV || op == BINOP_REM || op == BINOP_MOD)) + return value_zero (VALUE_TYPE (arg1), not_lval); else - if (noside == EVAL_AVOID_SIDE_EFFECTS - && (op == BINOP_DIV || op == BINOP_REM || op == BINOP_MOD)) + { + if (ada_is_fixed_point_type (VALUE_TYPE (arg1))) + arg1 = cast_from_fixed_to_double (arg1); + if (ada_is_fixed_point_type (VALUE_TYPE (arg2))) + arg2 = cast_from_fixed_to_double (arg2); + return ada_value_binop (arg1, arg2, op); + } + + case BINOP_REM: + case BINOP_MOD: + arg1 = evaluate_subexp (NULL_TYPE, exp, pos, noside); + arg2 = evaluate_subexp (NULL_TYPE, exp, pos, noside); + if (noside == EVAL_SKIP) + goto nosideret; + else if (noside == EVAL_AVOID_SIDE_EFFECTS + && (op == BINOP_DIV || op == BINOP_REM || op == BINOP_MOD)) return value_zero (VALUE_TYPE (arg1), not_lval); else - { - if (ada_is_fixed_point_type (VALUE_TYPE (arg1))) - arg1 = cast_from_fixed_to_double (arg1); - if (ada_is_fixed_point_type (VALUE_TYPE (arg2))) - arg2 = cast_from_fixed_to_double (arg2); - return value_binop (arg1, arg2, op); - } + return ada_value_binop (arg1, arg2, op); - case UNOP_NEG: + case BINOP_EQUAL: + case BINOP_NOTEQUAL: arg1 = evaluate_subexp (NULL_TYPE, exp, pos, noside); + arg2 = evaluate_subexp (VALUE_TYPE (arg1), exp, pos, noside); if (noside == EVAL_SKIP) goto nosideret; - if (unop_user_defined_p (op, arg1)) - return value_x_unop (arg1, op, EVAL_NORMAL); + if (noside == EVAL_AVOID_SIDE_EFFECTS) + tem = 0; + else + tem = ada_value_equal (arg1, arg2); + if (op == BINOP_NOTEQUAL) + tem = ! tem; + return value_from_longest (LA_BOOL_TYPE, (LONGEST) tem); + + case UNOP_NEG: + arg1 = evaluate_subexp (NULL_TYPE, exp, pos, noside); + if (noside == EVAL_SKIP) + goto nosideret; else if (ada_is_fixed_point_type (VALUE_TYPE (arg1))) - return value_cast (VALUE_TYPE (arg1), value_neg (arg1)); + return value_cast (VALUE_TYPE (arg1), value_neg (arg1)); else - return value_neg (arg1); - - /* FIXME: OP_UNRESOLVED_VALUE should be defined in expression.h */ - /* case OP_UNRESOLVED_VALUE: - /* Only encountered when an unresolved symbol occurs in a - context other than a function call, in which case, it is - illegal. *//* - (*pos) += 3; - if (noside == EVAL_SKIP) - goto nosideret; - else - error ("Unexpected unresolved symbol, %s, during evaluation", - ada_demangle (exp->elts[pc + 2].name)); - */ + return value_neg (arg1); + case OP_VAR_VALUE: *pos -= 1; if (noside == EVAL_SKIP) - { - *pos += 4; - goto nosideret; - } + { + *pos += 4; + goto nosideret; + } + else if (SYMBOL_DOMAIN (exp->elts[pc + 2].symbol) == UNDEF_DOMAIN) + /* Only encountered when an unresolved symbol occurs in a + context other than a function call, in which case, it is + illegal. */ + error ("Unexpected unresolved symbol, %s, during evaluation", + SYMBOL_PRINT_NAME (exp->elts[pc + 2].symbol)); else if (noside == EVAL_AVOID_SIDE_EFFECTS) - { - *pos += 4; - return value_zero - (to_static_fixed_type - (static_unwrap_type (SYMBOL_TYPE (exp->elts[pc + 2].symbol))), - not_lval); - } + { + *pos += 4; + return value_zero + (to_static_fixed_type + (static_unwrap_type (SYMBOL_TYPE (exp->elts[pc + 2].symbol))), + not_lval); + } else - { - arg1 = - unwrap_value (evaluate_subexp_standard - (expect_type, exp, pos, noside)); - return ada_to_fixed_value (VALUE_TYPE (arg1), 0, - VALUE_ADDRESS (arg1) + - VALUE_OFFSET (arg1), arg1); - } - - case OP_ARRAY: - (*pos) += 3; - tem2 = longest_to_int (exp->elts[pc + 1].longconst); - tem3 = longest_to_int (exp->elts[pc + 2].longconst); - nargs = tem3 - tem2 + 1; - type = expect_type ? check_typedef (expect_type) : NULL_TYPE; - - argvec = - (struct value * *) alloca (sizeof (struct value *) * (nargs + 1)); - for (tem = 0; tem == 0 || tem < nargs; tem += 1) - /* At least one element gets inserted for the type */ - { - /* Ensure that array expressions are coerced into pointer objects. */ - argvec[tem] = evaluate_subexp_with_coercion (exp, pos, noside); - } - if (noside == EVAL_SKIP) - goto nosideret; - return value_array (tem2, tem3, argvec); + { + arg1 = + unwrap_value (evaluate_subexp_standard + (expect_type, exp, pos, noside)); + return ada_to_fixed_value (arg1); + } case OP_FUNCALL: (*pos) += 2; /* Allocate arg vector, including space for the function to be - called in argvec[0] and a terminating NULL */ + called in argvec[0] and a terminating NULL. */ nargs = longest_to_int (exp->elts[pc + 1].longconst); argvec = - (struct value * *) alloca (sizeof (struct value *) * (nargs + 2)); - - /* FIXME: OP_UNRESOLVED_VALUE should be defined in expression.h */ - /* FIXME: name should be defined in expresion.h */ - /* if (exp->elts[*pos].opcode == OP_UNRESOLVED_VALUE) - error ("Unexpected unresolved symbol, %s, during evaluation", - ada_demangle (exp->elts[pc + 5].name)); - */ - if (0) - { - error ("unexpected code path, FIXME"); - } + (struct value **) alloca (sizeof (struct value *) * (nargs + 2)); + + if (exp->elts[*pos].opcode == OP_VAR_VALUE + && SYMBOL_DOMAIN (exp->elts[pc + 5].symbol) == UNDEF_DOMAIN) + error ("Unexpected unresolved symbol, %s, during evaluation", + SYMBOL_PRINT_NAME (exp->elts[pc + 5].symbol)); else - { - for (tem = 0; tem <= nargs; tem += 1) - argvec[tem] = evaluate_subexp (NULL_TYPE, exp, pos, noside); - argvec[tem] = 0; + { + for (tem = 0; tem <= nargs; tem += 1) + argvec[tem] = evaluate_subexp (NULL_TYPE, exp, pos, noside); + argvec[tem] = 0; + + if (noside == EVAL_SKIP) + goto nosideret; + } + + if (ada_is_packed_array_type (desc_base_type (VALUE_TYPE (argvec[0])))) + argvec[0] = ada_coerce_to_simple_array (argvec[0]); + else if (TYPE_CODE (VALUE_TYPE (argvec[0])) == TYPE_CODE_REF + || (TYPE_CODE (VALUE_TYPE (argvec[0])) == TYPE_CODE_ARRAY + && VALUE_LVAL (argvec[0]) == lval_memory)) + argvec[0] = value_addr (argvec[0]); - if (noside == EVAL_SKIP) - goto nosideret; - } + type = check_typedef (VALUE_TYPE (argvec[0])); + if (TYPE_CODE (type) == TYPE_CODE_PTR) + { + switch (TYPE_CODE (check_typedef (TYPE_TARGET_TYPE (type)))) + { + case TYPE_CODE_FUNC: + type = check_typedef (TYPE_TARGET_TYPE (type)); + break; + case TYPE_CODE_ARRAY: + break; + case TYPE_CODE_STRUCT: + if (noside != EVAL_AVOID_SIDE_EFFECTS) + argvec[0] = ada_value_ind (argvec[0]); + type = check_typedef (TYPE_TARGET_TYPE (type)); + break; + default: + error ("cannot subscript or call something of type `%s'", + ada_type_name (VALUE_TYPE (argvec[0]))); + break; + } + } - if (TYPE_CODE (VALUE_TYPE (argvec[0])) == TYPE_CODE_REF) - argvec[0] = value_addr (argvec[0]); + switch (TYPE_CODE (type)) + { + case TYPE_CODE_FUNC: + if (noside == EVAL_AVOID_SIDE_EFFECTS) + return allocate_value (TYPE_TARGET_TYPE (type)); + return call_function_by_hand (argvec[0], nargs, argvec + 1); + case TYPE_CODE_STRUCT: + { + int arity; + + /* Make sure to use the parallel ___XVS type if any. + Otherwise, we won't be able to find the array arity + and element type. */ + type = ada_get_base_type (type); + + arity = ada_array_arity (type); + type = ada_array_element_type (type, nargs); + if (type == NULL) + error ("cannot subscript or call a record"); + if (arity != nargs) + error ("wrong number of subscripts; expecting %d", arity); + if (noside == EVAL_AVOID_SIDE_EFFECTS) + return allocate_value (ada_aligned_type (type)); + return + unwrap_value (ada_value_subscript + (argvec[0], nargs, argvec + 1)); + } + case TYPE_CODE_ARRAY: + if (noside == EVAL_AVOID_SIDE_EFFECTS) + { + type = ada_array_element_type (type, nargs); + if (type == NULL) + error ("element type of array unknown"); + else + return allocate_value (ada_aligned_type (type)); + } + return + unwrap_value (ada_value_subscript + (ada_coerce_to_simple_array (argvec[0]), + nargs, argvec + 1)); + case TYPE_CODE_PTR: /* Pointer to array */ + type = to_fixed_array_type (TYPE_TARGET_TYPE (type), NULL, 1); + if (noside == EVAL_AVOID_SIDE_EFFECTS) + { + type = ada_array_element_type (type, nargs); + if (type == NULL) + error ("element type of array unknown"); + else + return allocate_value (ada_aligned_type (type)); + } + return + unwrap_value (ada_value_ptr_subscript (argvec[0], type, + nargs, argvec + 1)); + + default: + error ("Internal error in evaluate_subexp"); + } - if (ada_is_packed_array_type (VALUE_TYPE (argvec[0]))) - argvec[0] = ada_coerce_to_simple_array (argvec[0]); + case TERNOP_SLICE: + { + struct value *array = evaluate_subexp (NULL_TYPE, exp, pos, noside); + struct value *low_bound_val = + evaluate_subexp (NULL_TYPE, exp, pos, noside); + LONGEST low_bound = pos_atr (low_bound_val); + LONGEST high_bound + = pos_atr (evaluate_subexp (NULL_TYPE, exp, pos, noside)); + if (noside == EVAL_SKIP) + goto nosideret; + + /* If this is a reference type or a pointer type, and + the target type has an XVS parallel type, then get + the real target type. */ + if (TYPE_CODE (VALUE_TYPE (array)) == TYPE_CODE_REF + || TYPE_CODE (VALUE_TYPE (array)) == TYPE_CODE_PTR) + TYPE_TARGET_TYPE (VALUE_TYPE (array)) = + ada_get_base_type (TYPE_TARGET_TYPE (VALUE_TYPE (array))); + + /* If this is a reference to an aligner type, then remove all + the aligners. */ + if (TYPE_CODE (VALUE_TYPE (array)) == TYPE_CODE_REF + && ada_is_aligner_type (TYPE_TARGET_TYPE (VALUE_TYPE (array)))) + TYPE_TARGET_TYPE (VALUE_TYPE (array)) = + ada_aligned_type (TYPE_TARGET_TYPE (VALUE_TYPE (array))); + + if (ada_is_packed_array_type (VALUE_TYPE (array))) + error ("cannot slice a packed array"); + + /* If this is a reference to an array or an array lvalue, + convert to a pointer. */ + if (TYPE_CODE (VALUE_TYPE (array)) == TYPE_CODE_REF + || (TYPE_CODE (VALUE_TYPE (array)) == TYPE_CODE_ARRAY + && VALUE_LVAL (array) == lval_memory)) + array = value_addr (array); + + if (noside == EVAL_AVOID_SIDE_EFFECTS && + ada_is_array_descriptor_type (check_typedef (VALUE_TYPE (array)))) + { + /* Try dereferencing the array, in case it is an access + to array. */ + struct type *arrType = ada_type_of_array (array, 0); + if (arrType != NULL) + array = value_at_lazy (arrType, 0, NULL); + } + + array = ada_coerce_to_simple_array_ptr (array); + + /* When EVAL_AVOID_SIDE_EFFECTS, we may get the bounds wrong, + but only in contexts where the value is not being requested + (FIXME?). */ + if (TYPE_CODE (VALUE_TYPE (array)) == TYPE_CODE_PTR) + { + if (noside == EVAL_AVOID_SIDE_EFFECTS) + return ada_value_ind (array); + else if (high_bound < low_bound) + return empty_array (TYPE_TARGET_TYPE (VALUE_TYPE (array)), + low_bound); + else + { + struct type *arr_type0 = + to_fixed_array_type (TYPE_TARGET_TYPE (VALUE_TYPE (array)), + NULL, 1); + struct value *item0 = + ada_value_ptr_subscript (array, arr_type0, 1, + &low_bound_val); + struct value *slice = + value_repeat (item0, high_bound - low_bound + 1); + struct type *arr_type1 = VALUE_TYPE (slice); + TYPE_LOW_BOUND (TYPE_INDEX_TYPE (arr_type1)) = low_bound; + TYPE_HIGH_BOUND (TYPE_INDEX_TYPE (arr_type1)) += low_bound; + return slice; + } + } + else if (noside == EVAL_AVOID_SIDE_EFFECTS) + return array; + else if (high_bound < low_bound) + return empty_array (VALUE_TYPE (array), low_bound); + else + return value_slice (array, low_bound, high_bound - low_bound + 1); + } - type = check_typedef (VALUE_TYPE (argvec[0])); - if (TYPE_CODE (type) == TYPE_CODE_PTR) - { - switch (TYPE_CODE (check_typedef (TYPE_TARGET_TYPE (type)))) - { - case TYPE_CODE_FUNC: - type = check_typedef (TYPE_TARGET_TYPE (type)); - break; - case TYPE_CODE_ARRAY: - break; - case TYPE_CODE_STRUCT: - if (noside != EVAL_AVOID_SIDE_EFFECTS) - argvec[0] = ada_value_ind (argvec[0]); - type = check_typedef (TYPE_TARGET_TYPE (type)); - break; - default: - error ("cannot subscript or call something of type `%s'", - ada_type_name (VALUE_TYPE (argvec[0]))); - break; - } - } + case UNOP_IN_RANGE: + (*pos) += 2; + arg1 = evaluate_subexp (NULL_TYPE, exp, pos, noside); + type = exp->elts[pc + 1].type; + + if (noside == EVAL_SKIP) + goto nosideret; switch (TYPE_CODE (type)) - { - case TYPE_CODE_FUNC: - if (noside == EVAL_AVOID_SIDE_EFFECTS) - return allocate_value (TYPE_TARGET_TYPE (type)); - return call_function_by_hand (argvec[0], nargs, argvec + 1); - case TYPE_CODE_STRUCT: + { + default: + lim_warning ("Membership test incompletely implemented; " + "always returns true", 0); + return value_from_longest (builtin_type_int, (LONGEST) 1); + + case TYPE_CODE_RANGE: + arg2 = value_from_longest (builtin_type_int, + TYPE_LOW_BOUND (type)); + arg3 = value_from_longest (builtin_type_int, + TYPE_HIGH_BOUND (type)); + return + value_from_longest (builtin_type_int, + (value_less (arg1, arg3) + || value_equal (arg1, arg3)) + && (value_less (arg2, arg1) + || value_equal (arg2, arg1))); + } + + case BINOP_IN_BOUNDS: + (*pos) += 2; + arg1 = evaluate_subexp (NULL_TYPE, exp, pos, noside); + arg2 = evaluate_subexp (NULL_TYPE, exp, pos, noside); + + if (noside == EVAL_SKIP) + goto nosideret; + + if (noside == EVAL_AVOID_SIDE_EFFECTS) + return value_zero (builtin_type_int, not_lval); + + tem = longest_to_int (exp->elts[pc + 1].longconst); + + if (tem < 1 || tem > ada_array_arity (VALUE_TYPE (arg2))) + error ("invalid dimension number to '%s", "range"); + + arg3 = ada_array_bound (arg2, tem, 1); + arg2 = ada_array_bound (arg2, tem, 0); + + return + value_from_longest (builtin_type_int, + (value_less (arg1, arg3) + || value_equal (arg1, arg3)) + && (value_less (arg2, arg1) + || value_equal (arg2, arg1))); + + case TERNOP_IN_RANGE: + arg1 = evaluate_subexp (NULL_TYPE, exp, pos, noside); + arg2 = evaluate_subexp (NULL_TYPE, exp, pos, noside); + arg3 = evaluate_subexp (NULL_TYPE, exp, pos, noside); + + if (noside == EVAL_SKIP) + goto nosideret; + + return + value_from_longest (builtin_type_int, + (value_less (arg1, arg3) + || value_equal (arg1, arg3)) + && (value_less (arg2, arg1) + || value_equal (arg2, arg1))); + + case OP_ATR_FIRST: + case OP_ATR_LAST: + case OP_ATR_LENGTH: + { + struct type *type_arg; + if (exp->elts[*pos].opcode == OP_TYPE) { - int arity = ada_array_arity (type); - type = ada_array_element_type (type, nargs); - if (type == NULL) - error ("cannot subscript or call a record"); - if (arity != nargs) - error ("wrong number of subscripts; expecting %d", arity); - if (noside == EVAL_AVOID_SIDE_EFFECTS) - return allocate_value (ada_aligned_type (type)); - return - unwrap_value (ada_value_subscript - (argvec[0], nargs, argvec + 1)); + evaluate_subexp (NULL_TYPE, exp, pos, EVAL_SKIP); + arg1 = NULL; + type_arg = exp->elts[pc + 2].type; + } + else + { + arg1 = evaluate_subexp (NULL_TYPE, exp, pos, noside); + type_arg = NULL; } - case TYPE_CODE_ARRAY: - if (noside == EVAL_AVOID_SIDE_EFFECTS) - { - type = ada_array_element_type (type, nargs); - if (type == NULL) - error ("element type of array unknown"); - else - return allocate_value (ada_aligned_type (type)); - } - return - unwrap_value (ada_value_subscript - (ada_coerce_to_simple_array (argvec[0]), - nargs, argvec + 1)); - case TYPE_CODE_PTR: /* Pointer to array */ - type = to_fixed_array_type (TYPE_TARGET_TYPE (type), NULL, 1); - if (noside == EVAL_AVOID_SIDE_EFFECTS) - { - type = ada_array_element_type (type, nargs); - if (type == NULL) - error ("element type of array unknown"); - else - return allocate_value (ada_aligned_type (type)); - } - return - unwrap_value (ada_value_ptr_subscript (argvec[0], type, - nargs, argvec + 1)); - default: - error ("Internal error in evaluate_subexp"); - } + if (exp->elts[*pos].opcode != OP_LONG) + error ("illegal operand to '%s", ada_attribute_name (op)); + tem = longest_to_int (exp->elts[*pos + 2].longconst); + *pos += 4; - case TERNOP_SLICE: - { - struct value *array = evaluate_subexp (NULL_TYPE, exp, pos, noside); - int lowbound - = value_as_long (evaluate_subexp (NULL_TYPE, exp, pos, noside)); - int upper - = value_as_long (evaluate_subexp (NULL_TYPE, exp, pos, noside)); if (noside == EVAL_SKIP) goto nosideret; - /* If this is a reference to an array, then dereference it */ - if (TYPE_CODE (VALUE_TYPE (array)) == TYPE_CODE_REF - && TYPE_TARGET_TYPE (VALUE_TYPE (array)) != NULL - && TYPE_CODE (TYPE_TARGET_TYPE (VALUE_TYPE (array))) == - TYPE_CODE_ARRAY - && !ada_is_array_descriptor (check_typedef (VALUE_TYPE (array)))) + if (type_arg == NULL) { - array = ada_coerce_ref (array); - } + arg1 = ada_coerce_ref (arg1); - if (noside == EVAL_AVOID_SIDE_EFFECTS && - ada_is_array_descriptor (check_typedef (VALUE_TYPE (array)))) - { - /* Try to dereference the array, in case it is an access to array */ - struct type *arrType = ada_type_of_array (array, 0); - if (arrType != NULL) - array = value_at_lazy (arrType, 0, NULL); + if (ada_is_packed_array_type (VALUE_TYPE (arg1))) + arg1 = ada_coerce_to_simple_array (arg1); + + if (tem < 1 || tem > ada_array_arity (VALUE_TYPE (arg1))) + error ("invalid dimension number to '%s", + ada_attribute_name (op)); + + if (noside == EVAL_AVOID_SIDE_EFFECTS) + { + type = ada_index_type (VALUE_TYPE (arg1), tem); + if (type == NULL) + error + ("attempt to take bound of something that is not an array"); + return allocate_value (type); + } + + switch (op) + { + default: /* Should never happen. */ + error ("unexpected attribute encountered"); + case OP_ATR_FIRST: + return ada_array_bound (arg1, tem, 0); + case OP_ATR_LAST: + return ada_array_bound (arg1, tem, 1); + case OP_ATR_LENGTH: + return ada_array_length (arg1, tem); + } } - if (ada_is_array_descriptor (VALUE_TYPE (array))) - array = ada_coerce_to_simple_array (array); - - /* If at this point we have a pointer to an array, it means that - it is a pointer to a simple (non-ada) array. We just then - dereference it */ - if (TYPE_CODE (VALUE_TYPE (array)) == TYPE_CODE_PTR - && TYPE_TARGET_TYPE (VALUE_TYPE (array)) != NULL - && TYPE_CODE (TYPE_TARGET_TYPE (VALUE_TYPE (array))) == - TYPE_CODE_ARRAY) + else if (discrete_type_p (type_arg)) { - array = ada_value_ind (array); + struct type *range_type; + char *name = ada_type_name (type_arg); + range_type = NULL; + if (name != NULL && TYPE_CODE (type_arg) != TYPE_CODE_ENUM) + range_type = + to_fixed_range_type (name, NULL, TYPE_OBJFILE (type_arg)); + if (range_type == NULL) + range_type = type_arg; + switch (op) + { + default: + error ("unexpected attribute encountered"); + case OP_ATR_FIRST: + return discrete_type_low_bound (range_type); + case OP_ATR_LAST: + return discrete_type_high_bound (range_type); + case OP_ATR_LENGTH: + error ("the 'length attribute applies only to array types"); + } } - - if (noside == EVAL_AVOID_SIDE_EFFECTS) - /* The following will get the bounds wrong, but only in contexts - where the value is not being requested (FIXME?). */ - return array; + else if (TYPE_CODE (type_arg) == TYPE_CODE_FLT) + error ("unimplemented type attribute"); else - return value_slice (array, lowbound, upper - lowbound + 1); + { + LONGEST low, high; + + if (ada_is_packed_array_type (type_arg)) + type_arg = decode_packed_array_type (type_arg); + + if (tem < 1 || tem > ada_array_arity (type_arg)) + error ("invalid dimension number to '%s", + ada_attribute_name (op)); + + type = ada_index_type (type_arg, tem); + if (type == NULL) + error ("attempt to take bound of something that is not an array"); + if (noside == EVAL_AVOID_SIDE_EFFECTS) + return allocate_value (type); + + switch (op) + { + default: + error ("unexpected attribute encountered"); + case OP_ATR_FIRST: + low = ada_array_bound_from_type (type_arg, tem, 0, &type); + return value_from_longest (type, low); + case OP_ATR_LAST: + high = + ada_array_bound_from_type (type_arg, tem, 1, &type); + return value_from_longest (type, high); + case OP_ATR_LENGTH: + low = ada_array_bound_from_type (type_arg, tem, 0, &type); + high = ada_array_bound_from_type (type_arg, tem, 1, NULL); + return value_from_longest (type, high - low + 1); + } + } } - /* FIXME: UNOP_MBR should be defined in expression.h */ - /* case UNOP_MBR: - (*pos) += 2; - arg1 = evaluate_subexp (NULL_TYPE, exp, pos, noside); - type = exp->elts[pc + 1].type; - - if (noside == EVAL_SKIP) - goto nosideret; - - switch (TYPE_CODE (type)) - { - default: - warning ("Membership test incompletely implemented; always returns true"); - return value_from_longest (builtin_type_int, (LONGEST) 1); - - case TYPE_CODE_RANGE: - arg2 = value_from_longest (builtin_type_int, - (LONGEST) TYPE_LOW_BOUND (type)); - arg3 = value_from_longest (builtin_type_int, - (LONGEST) TYPE_HIGH_BOUND (type)); - return - value_from_longest (builtin_type_int, - (value_less (arg1,arg3) - || value_equal (arg1,arg3)) - && (value_less (arg2,arg1) - || value_equal (arg2,arg1))); - } - */ - /* FIXME: BINOP_MBR should be defined in expression.h */ - /* case BINOP_MBR: - (*pos) += 2; - arg1 = evaluate_subexp (NULL_TYPE, exp, pos, noside); - arg2 = evaluate_subexp (NULL_TYPE, exp, pos, noside); - - if (noside == EVAL_SKIP) - goto nosideret; - - if (noside == EVAL_AVOID_SIDE_EFFECTS) - return value_zero (builtin_type_int, not_lval); - - tem = longest_to_int (exp->elts[pc + 1].longconst); - - if (tem < 1 || tem > ada_array_arity (VALUE_TYPE (arg2))) - error ("invalid dimension number to '%s", "range"); - - arg3 = ada_array_bound (arg2, tem, 1); - arg2 = ada_array_bound (arg2, tem, 0); - - return - value_from_longest (builtin_type_int, - (value_less (arg1,arg3) - || value_equal (arg1,arg3)) - && (value_less (arg2,arg1) - || value_equal (arg2,arg1))); - */ - /* FIXME: TERNOP_MBR should be defined in expression.h */ - /* case TERNOP_MBR: - arg1 = evaluate_subexp (NULL_TYPE, exp, pos, noside); - arg2 = evaluate_subexp (NULL_TYPE, exp, pos, noside); - arg3 = evaluate_subexp (NULL_TYPE, exp, pos, noside); - - if (noside == EVAL_SKIP) - goto nosideret; - - return - value_from_longest (builtin_type_int, - (value_less (arg1,arg3) - || value_equal (arg1,arg3)) - && (value_less (arg2,arg1) - || value_equal (arg2,arg1))); - */ - /* FIXME: OP_ATTRIBUTE should be defined in expression.h */ - /* case OP_ATTRIBUTE: - *pos += 3; - atr = (enum ada_attribute) longest_to_int (exp->elts[pc + 2].longconst); - switch (atr) - { - default: - error ("unexpected attribute encountered"); - - case ATR_FIRST: - case ATR_LAST: - case ATR_LENGTH: - { - struct type* type_arg; - if (exp->elts[*pos].opcode == OP_TYPE) - { - evaluate_subexp (NULL_TYPE, exp, pos, EVAL_SKIP); - arg1 = NULL; - type_arg = exp->elts[pc + 5].type; - } - else - { - arg1 = evaluate_subexp (NULL_TYPE, exp, pos, noside); - type_arg = NULL; - } - - if (exp->elts[*pos].opcode != OP_LONG) - error ("illegal operand to '%s", ada_attribute_name (atr)); - tem = longest_to_int (exp->elts[*pos+2].longconst); - *pos += 4; - - if (noside == EVAL_SKIP) - goto nosideret; - - if (type_arg == NULL) - { - arg1 = ada_coerce_ref (arg1); - - if (ada_is_packed_array_type (VALUE_TYPE (arg1))) - arg1 = ada_coerce_to_simple_array (arg1); - - if (tem < 1 || tem > ada_array_arity (VALUE_TYPE (arg1))) - error ("invalid dimension number to '%s", - ada_attribute_name (atr)); - - if (noside == EVAL_AVOID_SIDE_EFFECTS) - { - type = ada_index_type (VALUE_TYPE (arg1), tem); - if (type == NULL) - error ("attempt to take bound of something that is not an array"); - return allocate_value (type); - } - - switch (atr) - { - default: - error ("unexpected attribute encountered"); - case ATR_FIRST: - return ada_array_bound (arg1, tem, 0); - case ATR_LAST: - return ada_array_bound (arg1, tem, 1); - case ATR_LENGTH: - return ada_array_length (arg1, tem); - } - } - else if (TYPE_CODE (type_arg) == TYPE_CODE_RANGE - || TYPE_CODE (type_arg) == TYPE_CODE_INT) - { - struct type* range_type; - char* name = ada_type_name (type_arg); - if (name == NULL) - { - if (TYPE_CODE (type_arg) == TYPE_CODE_RANGE) - range_type = type_arg; - else - error ("unimplemented type attribute"); - } - else - range_type = - to_fixed_range_type (name, NULL, TYPE_OBJFILE (type_arg)); - switch (atr) - { - default: - error ("unexpected attribute encountered"); - case ATR_FIRST: - return value_from_longest (TYPE_TARGET_TYPE (range_type), - TYPE_LOW_BOUND (range_type)); - case ATR_LAST: - return value_from_longest (TYPE_TARGET_TYPE (range_type), - TYPE_HIGH_BOUND (range_type)); - } - } - else if (TYPE_CODE (type_arg) == TYPE_CODE_ENUM) - { - switch (atr) - { - default: - error ("unexpected attribute encountered"); - case ATR_FIRST: - return value_from_longest - (type_arg, TYPE_FIELD_BITPOS (type_arg, 0)); - case ATR_LAST: - return value_from_longest - (type_arg, - TYPE_FIELD_BITPOS (type_arg, - TYPE_NFIELDS (type_arg) - 1)); - } - } - else if (TYPE_CODE (type_arg) == TYPE_CODE_FLT) - error ("unimplemented type attribute"); - else - { - LONGEST low, high; - - if (ada_is_packed_array_type (type_arg)) - type_arg = decode_packed_array_type (type_arg); - - if (tem < 1 || tem > ada_array_arity (type_arg)) - error ("invalid dimension number to '%s", - ada_attribute_name (atr)); - - if (noside == EVAL_AVOID_SIDE_EFFECTS) - { - type = ada_index_type (type_arg, tem); - if (type == NULL) - error ("attempt to take bound of something that is not an array"); - return allocate_value (type); - } - - switch (atr) - { - default: - error ("unexpected attribute encountered"); - case ATR_FIRST: - low = ada_array_bound_from_type (type_arg, tem, 0, &type); - return value_from_longest (type, low); - case ATR_LAST: - high = ada_array_bound_from_type (type_arg, tem, 1, &type); - return value_from_longest (type, high); - case ATR_LENGTH: - low = ada_array_bound_from_type (type_arg, tem, 0, &type); - high = ada_array_bound_from_type (type_arg, tem, 1, NULL); - return value_from_longest (type, high-low+1); - } - } - } - - case ATR_TAG: - arg1 = evaluate_subexp (NULL_TYPE, exp, pos, noside); - if (noside == EVAL_SKIP) - goto nosideret; - - if (noside == EVAL_AVOID_SIDE_EFFECTS) - return - value_zero (ada_tag_type (arg1), not_lval); - - return ada_value_tag (arg1); - - case ATR_MIN: - case ATR_MAX: - evaluate_subexp (NULL_TYPE, exp, pos, EVAL_SKIP); - arg1 = evaluate_subexp (NULL_TYPE, exp, pos, noside); - arg2 = evaluate_subexp (NULL_TYPE, exp, pos, noside); - if (noside == EVAL_SKIP) - goto nosideret; - else if (noside == EVAL_AVOID_SIDE_EFFECTS) - return value_zero (VALUE_TYPE (arg1), not_lval); - else - return value_binop (arg1, arg2, - atr == ATR_MIN ? BINOP_MIN : BINOP_MAX); - - case ATR_MODULUS: - { - struct type* type_arg = exp->elts[pc + 5].type; - evaluate_subexp (NULL_TYPE, exp, pos, EVAL_SKIP); - *pos += 4; - - if (noside == EVAL_SKIP) - goto nosideret; - - if (! ada_is_modular_type (type_arg)) - error ("'modulus must be applied to modular type"); - - return value_from_longest (TYPE_TARGET_TYPE (type_arg), - ada_modulus (type_arg)); - } - - - case ATR_POS: - evaluate_subexp (NULL_TYPE, exp, pos, EVAL_SKIP); - arg1 = evaluate_subexp (NULL_TYPE, exp, pos, noside); - if (noside == EVAL_SKIP) - goto nosideret; - else if (noside == EVAL_AVOID_SIDE_EFFECTS) - return value_zero (builtin_type_ada_int, not_lval); - else - return value_pos_atr (arg1); - - case ATR_SIZE: - arg1 = evaluate_subexp (NULL_TYPE, exp, pos, noside); - if (noside == EVAL_SKIP) - goto nosideret; - else if (noside == EVAL_AVOID_SIDE_EFFECTS) - return value_zero (builtin_type_ada_int, not_lval); - else - return value_from_longest (builtin_type_ada_int, - TARGET_CHAR_BIT - * TYPE_LENGTH (VALUE_TYPE (arg1))); - - case ATR_VAL: - evaluate_subexp (NULL_TYPE, exp, pos, EVAL_SKIP); - arg1 = evaluate_subexp (NULL_TYPE, exp, pos, noside); - type = exp->elts[pc + 5].type; - if (noside == EVAL_SKIP) - goto nosideret; - else if (noside == EVAL_AVOID_SIDE_EFFECTS) - return value_zero (type, not_lval); - else - return value_val_atr (type, arg1); - } */ - case BINOP_EXP: + case OP_ATR_TAG: + arg1 = evaluate_subexp (NULL_TYPE, exp, pos, noside); + if (noside == EVAL_SKIP) + goto nosideret; + + if (noside == EVAL_AVOID_SIDE_EFFECTS) + return value_zero (ada_tag_type (arg1), not_lval); + + return ada_value_tag (arg1); + + case OP_ATR_MIN: + case OP_ATR_MAX: + evaluate_subexp (NULL_TYPE, exp, pos, EVAL_SKIP); arg1 = evaluate_subexp (NULL_TYPE, exp, pos, noside); arg2 = evaluate_subexp (NULL_TYPE, exp, pos, noside); if (noside == EVAL_SKIP) goto nosideret; - if (binop_user_defined_p (op, arg1, arg2)) - return unwrap_value (value_x_binop (arg1, arg2, op, OP_NULL, - EVAL_NORMAL)); else if (noside == EVAL_AVOID_SIDE_EFFECTS) return value_zero (VALUE_TYPE (arg1), not_lval); else - return value_binop (arg1, arg2, op); + return value_binop (arg1, arg2, + op == OP_ATR_MIN ? BINOP_MIN : BINOP_MAX); - case UNOP_PLUS: + case OP_ATR_MODULUS: + { + struct type *type_arg = exp->elts[pc + 2].type; + evaluate_subexp (NULL_TYPE, exp, pos, EVAL_SKIP); + + if (noside == EVAL_SKIP) + goto nosideret; + + if (!ada_is_modular_type (type_arg)) + error ("'modulus must be applied to modular type"); + + return value_from_longest (TYPE_TARGET_TYPE (type_arg), + ada_modulus (type_arg)); + } + + + case OP_ATR_POS: + evaluate_subexp (NULL_TYPE, exp, pos, EVAL_SKIP); arg1 = evaluate_subexp (NULL_TYPE, exp, pos, noside); if (noside == EVAL_SKIP) goto nosideret; - if (unop_user_defined_p (op, arg1)) - return unwrap_value (value_x_unop (arg1, op, EVAL_NORMAL)); + else if (noside == EVAL_AVOID_SIDE_EFFECTS) + return value_zero (builtin_type_ada_int, not_lval); else - return arg1; + return value_pos_atr (arg1); - case UNOP_ABS: + case OP_ATR_SIZE: arg1 = evaluate_subexp (NULL_TYPE, exp, pos, noside); if (noside == EVAL_SKIP) goto nosideret; + else if (noside == EVAL_AVOID_SIDE_EFFECTS) + return value_zero (builtin_type_ada_int, not_lval); + else + return value_from_longest (builtin_type_ada_int, + TARGET_CHAR_BIT + * TYPE_LENGTH (VALUE_TYPE (arg1))); + + case OP_ATR_VAL: + evaluate_subexp (NULL_TYPE, exp, pos, EVAL_SKIP); + arg1 = evaluate_subexp (NULL_TYPE, exp, pos, noside); + type = exp->elts[pc + 2].type; + if (noside == EVAL_SKIP) + goto nosideret; + else if (noside == EVAL_AVOID_SIDE_EFFECTS) + return value_zero (type, not_lval); + else + return value_val_atr (type, arg1); + + case BINOP_EXP: + arg1 = evaluate_subexp (NULL_TYPE, exp, pos, noside); + arg2 = evaluate_subexp (NULL_TYPE, exp, pos, noside); + if (noside == EVAL_SKIP) + goto nosideret; + else if (noside == EVAL_AVOID_SIDE_EFFECTS) + return value_zero (VALUE_TYPE (arg1), not_lval); + else + return value_binop (arg1, arg2, op); + + case UNOP_PLUS: + arg1 = evaluate_subexp (NULL_TYPE, exp, pos, noside); + if (noside == EVAL_SKIP) + goto nosideret; + else + return arg1; + + case UNOP_ABS: + arg1 = evaluate_subexp (NULL_TYPE, exp, pos, noside); + if (noside == EVAL_SKIP) + goto nosideret; if (value_less (arg1, value_zero (VALUE_TYPE (arg1), not_lval))) - return value_neg (arg1); + return value_neg (arg1); else - return arg1; + return arg1; case UNOP_IND: if (expect_type && TYPE_CODE (expect_type) == TYPE_CODE_PTR) - expect_type = TYPE_TARGET_TYPE (check_typedef (expect_type)); + expect_type = TYPE_TARGET_TYPE (check_typedef (expect_type)); arg1 = evaluate_subexp (expect_type, exp, pos, noside); if (noside == EVAL_SKIP) - goto nosideret; + goto nosideret; type = check_typedef (VALUE_TYPE (arg1)); if (noside == EVAL_AVOID_SIDE_EFFECTS) - { - if (ada_is_array_descriptor (type)) - /* GDB allows dereferencing GNAT array descriptors. */ - { - struct type *arrType = ada_type_of_array (arg1, 0); - if (arrType == NULL) - error ("Attempt to dereference null array pointer."); - return value_at_lazy (arrType, 0, NULL); - } - else if (TYPE_CODE (type) == TYPE_CODE_PTR - || TYPE_CODE (type) == TYPE_CODE_REF - /* In C you can dereference an array to get the 1st elt. */ - || TYPE_CODE (type) == TYPE_CODE_ARRAY) - return - value_zero - (to_static_fixed_type - (ada_aligned_type (check_typedef (TYPE_TARGET_TYPE (type)))), - lval_memory); - else if (TYPE_CODE (type) == TYPE_CODE_INT) - /* GDB allows dereferencing an int. */ - return value_zero (builtin_type_int, lval_memory); - else - error ("Attempt to take contents of a non-pointer value."); - } - arg1 = ada_coerce_ref (arg1); + { + if (ada_is_array_descriptor_type (type)) + /* GDB allows dereferencing GNAT array descriptors. */ + { + struct type *arrType = ada_type_of_array (arg1, 0); + if (arrType == NULL) + error ("Attempt to dereference null array pointer."); + return value_at_lazy (arrType, 0, NULL); + } + else if (TYPE_CODE (type) == TYPE_CODE_PTR + || TYPE_CODE (type) == TYPE_CODE_REF + /* In C you can dereference an array to get the 1st elt. */ + || TYPE_CODE (type) == TYPE_CODE_ARRAY) + return + value_zero + (to_static_fixed_type + (ada_aligned_type (check_typedef (TYPE_TARGET_TYPE (type)))), + lval_memory); + else if (TYPE_CODE (type) == TYPE_CODE_INT) + /* GDB allows dereferencing an int. */ + return value_zero (builtin_type_int, lval_memory); + else + error ("Attempt to take contents of a non-pointer value."); + } + arg1 = ada_coerce_ref (arg1); /* FIXME: What is this for?? */ type = check_typedef (VALUE_TYPE (arg1)); - if (ada_is_array_descriptor (type)) - /* GDB allows dereferencing GNAT array descriptors. */ - return ada_coerce_to_simple_array (arg1); + if (ada_is_array_descriptor_type (type)) + /* GDB allows dereferencing GNAT array descriptors. */ + return ada_coerce_to_simple_array (arg1); else - return ada_value_ind (arg1); + return ada_value_ind (arg1); case STRUCTOP_STRUCT: tem = longest_to_int (exp->elts[pc + 1].longconst); (*pos) += 3 + BYTES_TO_EXP_ELEM (tem + 1); arg1 = evaluate_subexp (NULL_TYPE, exp, pos, noside); if (noside == EVAL_SKIP) - goto nosideret; + goto nosideret; if (noside == EVAL_AVOID_SIDE_EFFECTS) - return value_zero (ada_aligned_type - (ada_lookup_struct_elt_type (VALUE_TYPE (arg1), - &exp->elts[pc + - 2].string, - 0, NULL)), - lval_memory); + { + struct type *type1 = VALUE_TYPE (arg1); + if (ada_is_tagged_type (type1, 1)) + { + type = ada_lookup_struct_elt_type (type1, + &exp->elts[pc + 2].string, + 1, 1, NULL); + if (type == NULL) + /* In this case, we assume that the field COULD exist + in some extension of the type. Return an object of + "type" void, which will match any formal + (see ada_type_match). */ + return value_zero (builtin_type_void, lval_memory); + } + else + type = ada_lookup_struct_elt_type (type1, &exp->elts[pc + 2].string, + 1, 0, NULL); + + return value_zero (ada_aligned_type (type), lval_memory); + } else - return unwrap_value (ada_value_struct_elt (arg1, - &exp->elts[pc + 2].string, - "record")); + return + ada_to_fixed_value (unwrap_value + (ada_value_struct_elt + (arg1, &exp->elts[pc + 2].string, "record"))); case OP_TYPE: - /* The value is not supposed to be used. This is here to make it - easier to accommodate expressions that contain types. */ + /* The value is not supposed to be used. This is here to make it + easier to accommodate expressions that contain types. */ (*pos) += 2; if (noside == EVAL_SKIP) - goto nosideret; + goto nosideret; else if (noside == EVAL_AVOID_SIDE_EFFECTS) - return allocate_value (builtin_type_void); - else - error ("Attempt to use a type name as an expression"); - - case STRUCTOP_PTR: - tem = longest_to_int (exp->elts[pc + 1].longconst); - (*pos) += 3 + BYTES_TO_EXP_ELEM (tem + 1); - arg1 = evaluate_subexp (NULL_TYPE, exp, pos, noside); - if (noside == EVAL_SKIP) - goto nosideret; - if (noside == EVAL_AVOID_SIDE_EFFECTS) - return value_zero (ada_aligned_type - (ada_lookup_struct_elt_type (VALUE_TYPE (arg1), - &exp->elts[pc + - 2].string, - 0, NULL)), - lval_memory); + return allocate_value (builtin_type_void); else - return unwrap_value (ada_value_struct_elt (arg1, - &exp->elts[pc + 2].string, - "record access")); + error ("Attempt to use a type name as an expression"); } nosideret: @@ -7565,11 +9373,11 @@ nosideret: } - /* Fixed point */ + /* Fixed point */ /* If TYPE encodes an Ada fixed-point type, return the suffix of the type name that encodes the 'small and 'delta information. - Otherwise, return NULL. */ + Otherwise, return NULL. */ static const char * fixed_type_info (struct type *type) @@ -7581,9 +9389,9 @@ fixed_type_info (struct type *type) { const char *tail = strstr (name, "___XF_"); if (tail == NULL) - return NULL; + return NULL; else - return tail + 5; + return tail + 5; } else if (code == TYPE_CODE_RANGE && TYPE_TARGET_TYPE (type) != type) return fixed_type_info (TYPE_TARGET_TYPE (type)); @@ -7591,7 +9399,7 @@ fixed_type_info (struct type *type) return NULL; } -/* Returns non-zero iff TYPE represents an Ada fixed-point type. */ +/* Returns non-zero iff TYPE represents an Ada fixed-point type. */ int ada_is_fixed_point_type (struct type *type) @@ -7599,9 +9407,18 @@ ada_is_fixed_point_type (struct type *type) return fixed_type_info (type) != NULL; } +/* Return non-zero iff TYPE represents a System.Address type. */ + +int +ada_is_system_address_type (struct type *type) +{ + return (TYPE_NAME (type) + && strcmp (TYPE_NAME (type), "system__address") == 0); +} + /* Assuming that TYPE is the representation of an Ada fixed-point type, return its delta, or -1 if the type is malformed and the - delta cannot be determined. */ + delta cannot be determined. */ DOUBLEST ada_delta (struct type *type) @@ -7616,7 +9433,7 @@ ada_delta (struct type *type) } /* Assuming that ada_is_fixed_point_type (TYPE), return the scaling - factor ('SMALL value) associated with the type. */ + factor ('SMALL value) associated with the type. */ static DOUBLEST scaling_factor (struct type *type) @@ -7637,7 +9454,7 @@ scaling_factor (struct type *type) /* Assuming that X is the representation of a value of fixed-point - type TYPE, return its floating-point equivalent. */ + type TYPE, return its floating-point equivalent. */ DOUBLEST ada_fixed_to_float (struct type *type, LONGEST x) @@ -7645,8 +9462,8 @@ ada_fixed_to_float (struct type *type, LONGEST x) return (DOUBLEST) x *scaling_factor (type); } -/* The representation of a fixed-point value of type TYPE - corresponding to the value X. */ +/* The representation of a fixed-point value of type TYPE + corresponding to the value X. */ LONGEST ada_float_to_fixed (struct type *type, DOUBLEST x) @@ -7655,10 +9472,11 @@ ada_float_to_fixed (struct type *type, DOUBLEST x) } - /* VAX floating formats */ + /* VAX floating formats */ /* Non-zero iff TYPE represents one of the special VAX floating-point - types. */ + types. */ + int ada_is_vax_floating_type (struct type *type) { @@ -7667,21 +9485,23 @@ ada_is_vax_floating_type (struct type *type) return name_len > 6 && (TYPE_CODE (type) == TYPE_CODE_INT - || TYPE_CODE (type) == TYPE_CODE_RANGE) - && DEPRECATED_STREQN (ada_type_name (type) + name_len - 6, "___XF", 5); + || TYPE_CODE (type) == TYPE_CODE_RANGE) + && strncmp (ada_type_name (type) + name_len - 6, "___XF", 5) == 0; } /* The type of special VAX floating-point type this is, assuming - ada_is_vax_floating_point */ + ada_is_vax_floating_point. */ + int ada_vax_float_type_suffix (struct type *type) { return ada_type_name (type)[strlen (ada_type_name (type)) - 1]; } -/* A value representing the special debugging function that outputs +/* A value representing the special debugging function that outputs VAX floating-point values of the type represented by TYPE. Assumes - ada_is_vax_floating_type (TYPE). */ + ada_is_vax_floating_type (TYPE). */ + struct value * ada_vax_float_print_function (struct type *type) { @@ -7699,13 +9519,13 @@ ada_vax_float_print_function (struct type *type) } - /* Range types */ + /* Range types */ /* Scan STR beginning at position K for a discriminant name, and return the value of that discriminant field of DVAL in *PX. If PNEW_K is not null, put the position of the character beyond the name scanned in *PNEW_K. Return 1 if successful; return 0 and do - not alter *PX and *PNEW_K if unsuccessful. */ + not alter *PX and *PNEW_K if unsuccessful. */ static int scan_discrim_bound (char *str, int k, struct value *dval, LONGEST * px, @@ -7747,47 +9567,47 @@ scan_discrim_bound (char *str, int k, struct value *dval, LONGEST * px, /* Value of variable named NAME in the current environment. If no such variable found, then if ERR_MSG is null, returns 0, and - otherwise causes an error with message ERR_MSG. */ + otherwise causes an error with message ERR_MSG. */ + static struct value * get_var_value (char *name, char *err_msg) { - struct symbol **syms; - struct block **blocks; + struct ada_symbol_info *syms; int nsyms; - nsyms = - ada_lookup_symbol_list (name, get_selected_block (NULL), VAR_DOMAIN, - &syms, &blocks); + nsyms = ada_lookup_symbol_list (name, get_selected_block (0), VAR_DOMAIN, + &syms); if (nsyms != 1) { if (err_msg == NULL) - return 0; + return 0; else - error ("%s", err_msg); + error ("%s", err_msg); } - return value_of_variable (syms[0], blocks[0]); + return value_of_variable (syms[0].sym, syms[0].block); } /* Value of integer variable named NAME in the current environment. If - no such variable found, then if ERR_MSG is null, returns 0, and sets - *FLAG to 0. If successful, sets *FLAG to 1. */ + no such variable found, returns 0, and sets *FLAG to 0. If + successful, sets *FLAG to 1. */ + LONGEST -get_int_var_value (char *name, char *err_msg, int *flag) +get_int_var_value (char *name, int *flag) { - struct value *var_val = get_var_value (name, err_msg); + struct value *var_val = get_var_value (name, 0); if (var_val == 0) { if (flag != NULL) - *flag = 0; + *flag = 0; return 0; } else { if (flag != NULL) - *flag = 1; + *flag = 1; return value_as_long (var_val); } } @@ -7795,18 +9615,17 @@ get_int_var_value (char *name, char *err_msg, int *flag) /* Return a range type whose base type is that of the range type named NAME in the current environment, and whose bounds are calculated - from NAME according to the GNAT range encoding conventions. + from NAME according to the GNAT range encoding conventions. Extract discriminant values, if needed, from DVAL. If a new type must be created, allocate in OBJFILE's space. The bounds information, in general, is encoded in NAME, the base type given in - the named range type. */ + the named range type. */ static struct type * to_fixed_range_type (char *name, struct value *dval, struct objfile *objfile) { struct type *raw_type = ada_find_any_type (name); struct type *base_type; - LONGEST low, high; char *subtype_info; if (raw_type == NULL) @@ -7838,43 +9657,56 @@ to_fixed_range_type (char *name, struct value *dval, struct objfile *objfile) n = 1; if (*subtype_info == 'L') - { - if (!ada_scan_number (bounds_str, n, &L, &n) - && !scan_discrim_bound (bounds_str, n, dval, &L, &n)) - return raw_type; - if (bounds_str[n] == '_') - n += 2; - else if (bounds_str[n] == '.') /* FIXME? SGI Workshop kludge. */ - n += 1; - subtype_info += 1; - } + { + if (!ada_scan_number (bounds_str, n, &L, &n) + && !scan_discrim_bound (bounds_str, n, dval, &L, &n)) + return raw_type; + if (bounds_str[n] == '_') + n += 2; + else if (bounds_str[n] == '.') /* FIXME? SGI Workshop kludge. */ + n += 1; + subtype_info += 1; + } else - { - strcpy (name_buf + prefix_len, "___L"); - L = get_int_var_value (name_buf, "Index bound unknown.", NULL); - } + { + int ok; + strcpy (name_buf + prefix_len, "___L"); + L = get_int_var_value (name_buf, &ok); + if (!ok) + { + lim_warning ("Unknown lower bound, using 1.", 1); + L = 1; + } + } if (*subtype_info == 'U') - { - if (!ada_scan_number (bounds_str, n, &U, &n) - && !scan_discrim_bound (bounds_str, n, dval, &U, &n)) - return raw_type; - } + { + if (!ada_scan_number (bounds_str, n, &U, &n) + && !scan_discrim_bound (bounds_str, n, dval, &U, &n)) + return raw_type; + } else - { - strcpy (name_buf + prefix_len, "___U"); - U = get_int_var_value (name_buf, "Index bound unknown.", NULL); - } + { + int ok; + strcpy (name_buf + prefix_len, "___U"); + U = get_int_var_value (name_buf, &ok); + if (!ok) + { + lim_warning ("Unknown upper bound, using %ld.", (long) L); + U = L; + } + } if (objfile == NULL) - objfile = TYPE_OBJFILE (base_type); + objfile = TYPE_OBJFILE (base_type); type = create_range_type (alloc_type (objfile), base_type, L, U); TYPE_NAME (type) = name; return type; } } -/* True iff NAME is the name of a range type. */ +/* True iff NAME is the name of a range type. */ + int ada_is_range_type_name (const char *name) { @@ -7882,31 +9714,246 @@ ada_is_range_type_name (const char *name) } - /* Modular types */ + /* Modular types */ + +/* True iff TYPE is an Ada modular type. */ -/* True iff TYPE is an Ada modular type. */ int ada_is_modular_type (struct type *type) { - /* FIXME: base_type should be declared in gdbtypes.h, implemented in - valarith.c */ - struct type *subranged_type; /* = base_type (type); */ + struct type *subranged_type = base_type (type); return (subranged_type != NULL && TYPE_CODE (type) == TYPE_CODE_RANGE - && TYPE_CODE (subranged_type) != TYPE_CODE_ENUM - && TYPE_UNSIGNED (subranged_type)); + && TYPE_CODE (subranged_type) != TYPE_CODE_ENUM + && TYPE_UNSIGNED (subranged_type)); } -/* Assuming ada_is_modular_type (TYPE), the modulus of TYPE. */ +/* Assuming ada_is_modular_type (TYPE), the modulus of TYPE. */ + LONGEST ada_modulus (struct type * type) { return TYPE_HIGH_BOUND (type) + 1; } + /* Operators */ +/* Information about operators given special treatment in functions + below. */ +/* Format: OP_DEFN (<operator>, <operator length>, <# args>, <binop>). */ + +#define ADA_OPERATORS \ + OP_DEFN (OP_VAR_VALUE, 4, 0, 0) \ + OP_DEFN (BINOP_IN_BOUNDS, 3, 2, 0) \ + OP_DEFN (TERNOP_IN_RANGE, 1, 3, 0) \ + OP_DEFN (OP_ATR_FIRST, 1, 2, 0) \ + OP_DEFN (OP_ATR_LAST, 1, 2, 0) \ + OP_DEFN (OP_ATR_LENGTH, 1, 2, 0) \ + OP_DEFN (OP_ATR_IMAGE, 1, 2, 0) \ + OP_DEFN (OP_ATR_MAX, 1, 3, 0) \ + OP_DEFN (OP_ATR_MIN, 1, 3, 0) \ + OP_DEFN (OP_ATR_MODULUS, 1, 1, 0) \ + OP_DEFN (OP_ATR_POS, 1, 2, 0) \ + OP_DEFN (OP_ATR_SIZE, 1, 1, 0) \ + OP_DEFN (OP_ATR_TAG, 1, 1, 0) \ + OP_DEFN (OP_ATR_VAL, 1, 2, 0) \ + OP_DEFN (UNOP_QUAL, 3, 1, 0) \ + OP_DEFN (UNOP_IN_RANGE, 3, 1, 0) + +static void +ada_operator_length (struct expression *exp, int pc, int *oplenp, int *argsp) +{ + switch (exp->elts[pc - 1].opcode) + { + default: + operator_length_standard (exp, pc, oplenp, argsp); + break; + +#define OP_DEFN(op, len, args, binop) \ + case op: *oplenp = len; *argsp = args; break; + ADA_OPERATORS; +#undef OP_DEFN + } +} + +static char * +ada_op_name (enum exp_opcode opcode) +{ + switch (opcode) + { + default: + return op_name_standard (opcode); +#define OP_DEFN(op, len, args, binop) case op: return #op; + ADA_OPERATORS; +#undef OP_DEFN + } +} + +/* As for operator_length, but assumes PC is pointing at the first + element of the operator, and gives meaningful results only for the + Ada-specific operators. */ + +static void +ada_forward_operator_length (struct expression *exp, int pc, + int *oplenp, int *argsp) +{ + switch (exp->elts[pc].opcode) + { + default: + *oplenp = *argsp = 0; + break; +#define OP_DEFN(op, len, args, binop) \ + case op: *oplenp = len; *argsp = args; break; + ADA_OPERATORS; +#undef OP_DEFN + } +} + +static int +ada_dump_subexp_body (struct expression *exp, struct ui_file *stream, int elt) +{ + enum exp_opcode op = exp->elts[elt].opcode; + int oplen, nargs; + int pc = elt; + int i; + + ada_forward_operator_length (exp, elt, &oplen, &nargs); + + switch (op) + { + /* Ada attributes ('Foo). */ + case OP_ATR_FIRST: + case OP_ATR_LAST: + case OP_ATR_LENGTH: + case OP_ATR_IMAGE: + case OP_ATR_MAX: + case OP_ATR_MIN: + case OP_ATR_MODULUS: + case OP_ATR_POS: + case OP_ATR_SIZE: + case OP_ATR_TAG: + case OP_ATR_VAL: + break; + + case UNOP_IN_RANGE: + case UNOP_QUAL: + fprintf_filtered (stream, "Type @"); + gdb_print_host_address (exp->elts[pc + 1].type, stream); + fprintf_filtered (stream, " ("); + type_print (exp->elts[pc + 1].type, NULL, stream, 0); + fprintf_filtered (stream, ")"); + break; + case BINOP_IN_BOUNDS: + fprintf_filtered (stream, " (%d)", (int) exp->elts[pc + 2].longconst); + break; + case TERNOP_IN_RANGE: + break; + + default: + return dump_subexp_body_standard (exp, stream, elt); + } + + elt += oplen; + for (i = 0; i < nargs; i += 1) + elt = dump_subexp (exp, stream, elt); + return elt; +} - /* Operators */ +/* The Ada extension of print_subexp (q.v.). */ + +static void +ada_print_subexp (struct expression *exp, int *pos, + struct ui_file *stream, enum precedence prec) +{ + int oplen, nargs; + int pc = *pos; + enum exp_opcode op = exp->elts[pc].opcode; + + ada_forward_operator_length (exp, pc, &oplen, &nargs); + + switch (op) + { + default: + print_subexp_standard (exp, pos, stream, prec); + return; + + case OP_VAR_VALUE: + *pos += oplen; + fputs_filtered (SYMBOL_NATURAL_NAME (exp->elts[pc + 2].symbol), stream); + return; + + case BINOP_IN_BOUNDS: + *pos += oplen; + print_subexp (exp, pos, stream, PREC_SUFFIX); + fputs_filtered (" in ", stream); + print_subexp (exp, pos, stream, PREC_SUFFIX); + fputs_filtered ("'range", stream); + if (exp->elts[pc + 1].longconst > 1) + fprintf_filtered (stream, "(%ld)", (long) exp->elts[pc + 1].longconst); + return; + + case TERNOP_IN_RANGE: + *pos += oplen; + if (prec >= PREC_EQUAL) + fputs_filtered ("(", stream); + print_subexp (exp, pos, stream, PREC_SUFFIX); + fputs_filtered (" in ", stream); + print_subexp (exp, pos, stream, PREC_EQUAL); + fputs_filtered (" .. ", stream); + print_subexp (exp, pos, stream, PREC_EQUAL); + if (prec >= PREC_EQUAL) + fputs_filtered (")", stream); + return; + + case OP_ATR_FIRST: + case OP_ATR_LAST: + case OP_ATR_LENGTH: + case OP_ATR_IMAGE: + case OP_ATR_MAX: + case OP_ATR_MIN: + case OP_ATR_MODULUS: + case OP_ATR_POS: + case OP_ATR_SIZE: + case OP_ATR_TAG: + case OP_ATR_VAL: + *pos += oplen; + if (exp->elts[*pos].opcode == OP_TYPE) + { + if (TYPE_CODE (exp->elts[*pos + 1].type) != TYPE_CODE_VOID) + LA_PRINT_TYPE (exp->elts[*pos + 1].type, "", stream, 0, 0); + *pos += 3; + } + else + print_subexp (exp, pos, stream, PREC_SUFFIX); + fprintf_filtered (stream, "'%s", ada_attribute_name (op)); + if (nargs > 1) + { + int tem; + for (tem = 1; tem < nargs; tem += 1) + { + fputs_filtered ( (tem == 1) ? " (" : ", ", stream); + print_subexp (exp, pos, stream, PREC_ABOVE_COMMA); + } + fputs_filtered (")", stream); + } + return; + + case UNOP_QUAL: + *pos += oplen; + type_print (exp->elts[pc + 1].type, "", stream, 0); + fputs_filtered ("'(", stream); + print_subexp (exp, pos, stream, PREC_PREFIX); + fputs_filtered (")", stream); + return; + + case UNOP_IN_RANGE: + *pos += oplen; + print_subexp (exp, pos, stream, PREC_SUFFIX); + fputs_filtered (" in ", stream); + LA_PRINT_TYPE (exp->elts[pc + 1].type, "", stream, 1, 0); + return; + } +} /* Table mapping opcodes into strings for printing operators and precedences of the operators. */ @@ -7940,12 +9987,13 @@ static const struct op_print ada_op_print_tab[] = { {"not ", UNOP_LOGICAL_NOT, PREC_PREFIX, 0}, {"not ", UNOP_COMPLEMENT, PREC_PREFIX, 0}, {"abs ", UNOP_ABS, PREC_PREFIX, 0}, - {".all", UNOP_IND, PREC_SUFFIX, 1}, /* FIXME: postfix .ALL */ - {"'access", UNOP_ADDR, PREC_SUFFIX, 1}, /* FIXME: postfix 'ACCESS */ + {".all", UNOP_IND, PREC_SUFFIX, 1}, + {"'access", UNOP_ADDR, PREC_SUFFIX, 1}, + {"'size", OP_ATR_SIZE, PREC_SUFFIX, 1}, {NULL, 0, 0, 0} }; - /* Assorted Types and Interfaces */ + /* Assorted Types and Interfaces */ struct type *builtin_type_ada_int; struct type *builtin_type_ada_short; @@ -7961,54 +10009,76 @@ struct type *builtin_type_ada_system_address; struct type **const (ada_builtin_types[]) = { - &builtin_type_ada_int, - &builtin_type_ada_long, - &builtin_type_ada_short, - &builtin_type_ada_char, - &builtin_type_ada_float, - &builtin_type_ada_double, - &builtin_type_ada_long_long, - &builtin_type_ada_long_double, - &builtin_type_ada_natural, &builtin_type_ada_positive, - /* The following types are carried over from C for convenience. */ -&builtin_type_int, - &builtin_type_long, - &builtin_type_short, - &builtin_type_char, - &builtin_type_float, - &builtin_type_double, - &builtin_type_long_long, - &builtin_type_void, - &builtin_type_signed_char, - &builtin_type_unsigned_char, - &builtin_type_unsigned_short, - &builtin_type_unsigned_int, - &builtin_type_unsigned_long, - &builtin_type_unsigned_long_long, - &builtin_type_long_double, - &builtin_type_complex, &builtin_type_double_complex, 0}; - -/* Not really used, but needed in the ada_language_defn. */ + &builtin_type_ada_long, + &builtin_type_ada_short, + &builtin_type_ada_char, + &builtin_type_ada_float, + &builtin_type_ada_double, + &builtin_type_ada_long_long, + &builtin_type_ada_long_double, + &builtin_type_ada_natural, &builtin_type_ada_positive, + /* The following types are carried over from C for convenience. */ + &builtin_type_int, + &builtin_type_long, + &builtin_type_short, + &builtin_type_char, + &builtin_type_float, + &builtin_type_double, + &builtin_type_long_long, + &builtin_type_void, + &builtin_type_signed_char, + &builtin_type_unsigned_char, + &builtin_type_unsigned_short, + &builtin_type_unsigned_int, + &builtin_type_unsigned_long, + &builtin_type_unsigned_long_long, + &builtin_type_long_double, + &builtin_type_complex, + &builtin_type_double_complex, + 0 +}; + +/* Not really used, but needed in the ada_language_defn. */ + static void emit_char (int c, struct ui_file *stream, int quoter) { ada_emit_char (c, stream, quoter, 1); } +static int +parse () +{ + warnings_issued = 0; + return ada_parse (); +} + +static const struct exp_descriptor ada_exp_descriptor = +{ + ada_print_subexp, + ada_operator_length, + ada_op_name, + ada_dump_subexp_body, + ada_evaluate_subexp +}; + const struct language_defn ada_language_defn = { - "ada", /* Language name */ - /* language_ada, */ - language_unknown, - /* FIXME: language_ada should be defined in defs.h */ + "ada", /* Language name */ + language_ada, ada_builtin_types, range_check_off, type_check_off, - case_sensitive_on, /* Yes, Ada is case-insensitive, but - * that's not quite what this means. */ - ada_parse, + case_sensitive_on, /* Yes, Ada is case-insensitive, but + that's not quite what this means. */ +#ifdef GNAT_GDB + ada_lookup_symbol, + ada_lookup_minimal_symbol, +#endif + &ada_exp_descriptor, + parse, ada_error, - ada_evaluate_subexp, + resolve, ada_printchar, /* Print a character constant */ ada_printstr, /* Function to print string constant */ emit_char, /* Function to print single char (not used) */ @@ -8017,84 +10087,97 @@ const struct language_defn ada_language_defn = { ada_val_print, /* Print a value using appropriate syntax */ ada_value_print, /* Print a top-level value */ NULL, /* Language specific skip_trampoline */ - value_of_this, /* value_of_this */ - basic_lookup_symbol_nonlocal, /* lookup_symbol_nonlocal */ + NULL, /* value_of_this */ + ada_lookup_symbol_nonlocal, /* Looking up non-local symbols. */ basic_lookup_transparent_type,/* lookup_transparent_type */ - NULL, /* Language specific symbol demangler */ + ada_la_decode, /* Language specific symbol demangler */ {"", "", "", ""}, /* Binary format info */ #if 0 - {"8#%lo#", "8#", "o", "#"}, /* Octal format info */ - {"%ld", "", "d", ""}, /* Decimal format info */ - {"16#%lx#", "16#", "x", "#"}, /* Hex format info */ + {"8#%lo#", "8#", "o", "#"}, /* Octal format info */ + {"%ld", "", "d", ""}, /* Decimal format info */ + {"16#%lx#", "16#", "x", "#"}, /* Hex format info */ #else - /* Copied from c-lang.c. */ - {"0%lo", "0", "o", ""}, /* Octal format info */ - {"%ld", "", "d", ""}, /* Decimal format info */ - {"0x%lx", "0x", "x", ""}, /* Hex format info */ + /* Copied from c-lang.c. */ + {"0%lo", "0", "o", ""}, /* Octal format info */ + {"%ld", "", "d", ""}, /* Decimal format info */ + {"0x%lx", "0x", "x", ""}, /* Hex format info */ #endif - ada_op_print_tab, /* expression operators for printing */ - 1, /* c-style arrays (FIXME?) */ - 0, /* String lower bound (FIXME?) */ + ada_op_print_tab, /* expression operators for printing */ + 0, /* c-style arrays */ + 1, /* String lower bound */ &builtin_type_ada_char, - default_word_break_characters, + ada_get_gdb_completer_word_break_characters, +#ifdef GNAT_GDB + ada_translate_error_message, /* Substitute Ada-specific terminology + in errors and warnings. */ +#endif LANG_MAGIC }; -void -_initialize_ada_language (void) -{ +static void +build_ada_types (void) { builtin_type_ada_int = init_type (TYPE_CODE_INT, TARGET_INT_BIT / TARGET_CHAR_BIT, - 0, "integer", (struct objfile *) NULL); + 0, "integer", (struct objfile *) NULL); builtin_type_ada_long = init_type (TYPE_CODE_INT, TARGET_LONG_BIT / TARGET_CHAR_BIT, - 0, "long_integer", (struct objfile *) NULL); + 0, "long_integer", (struct objfile *) NULL); builtin_type_ada_short = init_type (TYPE_CODE_INT, TARGET_SHORT_BIT / TARGET_CHAR_BIT, - 0, "short_integer", (struct objfile *) NULL); + 0, "short_integer", (struct objfile *) NULL); builtin_type_ada_char = init_type (TYPE_CODE_INT, TARGET_CHAR_BIT / TARGET_CHAR_BIT, - 0, "character", (struct objfile *) NULL); + 0, "character", (struct objfile *) NULL); builtin_type_ada_float = init_type (TYPE_CODE_FLT, TARGET_FLOAT_BIT / TARGET_CHAR_BIT, - 0, "float", (struct objfile *) NULL); + 0, "float", (struct objfile *) NULL); builtin_type_ada_double = init_type (TYPE_CODE_FLT, TARGET_DOUBLE_BIT / TARGET_CHAR_BIT, - 0, "long_float", (struct objfile *) NULL); + 0, "long_float", (struct objfile *) NULL); builtin_type_ada_long_long = init_type (TYPE_CODE_INT, TARGET_LONG_LONG_BIT / TARGET_CHAR_BIT, - 0, "long_long_integer", (struct objfile *) NULL); + 0, "long_long_integer", (struct objfile *) NULL); builtin_type_ada_long_double = init_type (TYPE_CODE_FLT, TARGET_LONG_DOUBLE_BIT / TARGET_CHAR_BIT, - 0, "long_long_float", (struct objfile *) NULL); + 0, "long_long_float", (struct objfile *) NULL); builtin_type_ada_natural = init_type (TYPE_CODE_INT, TARGET_INT_BIT / TARGET_CHAR_BIT, - 0, "natural", (struct objfile *) NULL); + 0, "natural", (struct objfile *) NULL); builtin_type_ada_positive = init_type (TYPE_CODE_INT, TARGET_INT_BIT / TARGET_CHAR_BIT, - 0, "positive", (struct objfile *) NULL); + 0, "positive", (struct objfile *) NULL); builtin_type_ada_system_address = lookup_pointer_type (init_type (TYPE_CODE_VOID, 1, 0, "void", - (struct objfile *) NULL)); + (struct objfile *) NULL)); TYPE_NAME (builtin_type_ada_system_address) = "system__address"; +} + +void +_initialize_ada_language (void) +{ + build_ada_types (); + deprecated_register_gdbarch_swap (NULL, 0, build_ada_types); add_language (&ada_language_defn); +#ifdef GNAT_GDB add_show_from_set (add_set_cmd ("varsize-limit", class_support, var_uinteger, - (char *) &varsize_limit, - "Set maximum bytes in dynamic-sized object.", - &setlist), &showlist); + (char *) &varsize_limit, + "Set maximum bytes in dynamic-sized object.", + &setlist), &showlist); +#endif varsize_limit = 65536; - add_com ("begin", class_breakpoint, begin_command, - "Start the debugged program, stopping at the beginning of the\n\ -main program. You may specify command-line arguments to give it, as for\n\ -the \"run\" command (q.v.)."); -} + obstack_init (&symbol_list_obstack); + obstack_init (&cache_space); + decoded_names_store = htab_create_alloc_ex + (256, htab_hash_string, (int (*) (const void *, const void *)) streq, + NULL, NULL, xmcalloc, xmfree); +} /* Create a fundamental Ada type using default reasonable for the current target machine. @@ -8130,104 +10213,104 @@ ada_create_fundamental_type (struct objfile *objfile, int typeid) /* FIXME: For now, if we are asked to produce a type not in this language, create the equivalent of a C integer type with the name "<?type?>". When all the dust settles from the type - reconstruction work, this should probably become an error. */ + reconstruction work, this should probably become an error. */ type = init_type (TYPE_CODE_INT, - TARGET_INT_BIT / TARGET_CHAR_BIT, - 0, "<?type?>", objfile); + TARGET_INT_BIT / TARGET_CHAR_BIT, + 0, "<?type?>", objfile); warning ("internal error: no Ada fundamental type %d", typeid); break; case FT_VOID: type = init_type (TYPE_CODE_VOID, - TARGET_CHAR_BIT / TARGET_CHAR_BIT, - 0, "void", objfile); + TARGET_CHAR_BIT / TARGET_CHAR_BIT, + 0, "void", objfile); break; case FT_CHAR: type = init_type (TYPE_CODE_INT, - TARGET_CHAR_BIT / TARGET_CHAR_BIT, - 0, "character", objfile); + TARGET_CHAR_BIT / TARGET_CHAR_BIT, + 0, "character", objfile); break; case FT_SIGNED_CHAR: type = init_type (TYPE_CODE_INT, - TARGET_CHAR_BIT / TARGET_CHAR_BIT, - 0, "signed char", objfile); + TARGET_CHAR_BIT / TARGET_CHAR_BIT, + 0, "signed char", objfile); break; case FT_UNSIGNED_CHAR: type = init_type (TYPE_CODE_INT, - TARGET_CHAR_BIT / TARGET_CHAR_BIT, - TYPE_FLAG_UNSIGNED, "unsigned char", objfile); + TARGET_CHAR_BIT / TARGET_CHAR_BIT, + TYPE_FLAG_UNSIGNED, "unsigned char", objfile); break; case FT_SHORT: type = init_type (TYPE_CODE_INT, - TARGET_SHORT_BIT / TARGET_CHAR_BIT, - 0, "short_integer", objfile); + TARGET_SHORT_BIT / TARGET_CHAR_BIT, + 0, "short_integer", objfile); break; case FT_SIGNED_SHORT: type = init_type (TYPE_CODE_INT, - TARGET_SHORT_BIT / TARGET_CHAR_BIT, - 0, "short_integer", objfile); + TARGET_SHORT_BIT / TARGET_CHAR_BIT, + 0, "short_integer", objfile); break; case FT_UNSIGNED_SHORT: type = init_type (TYPE_CODE_INT, - TARGET_SHORT_BIT / TARGET_CHAR_BIT, - TYPE_FLAG_UNSIGNED, "unsigned short", objfile); + TARGET_SHORT_BIT / TARGET_CHAR_BIT, + TYPE_FLAG_UNSIGNED, "unsigned short", objfile); break; case FT_INTEGER: type = init_type (TYPE_CODE_INT, - TARGET_INT_BIT / TARGET_CHAR_BIT, - 0, "integer", objfile); + TARGET_INT_BIT / TARGET_CHAR_BIT, + 0, "integer", objfile); break; case FT_SIGNED_INTEGER: - type = init_type (TYPE_CODE_INT, TARGET_INT_BIT / TARGET_CHAR_BIT, 0, "integer", objfile); /* FIXME -fnf */ + type = init_type (TYPE_CODE_INT, TARGET_INT_BIT / TARGET_CHAR_BIT, 0, "integer", objfile); /* FIXME -fnf */ break; case FT_UNSIGNED_INTEGER: type = init_type (TYPE_CODE_INT, - TARGET_INT_BIT / TARGET_CHAR_BIT, - TYPE_FLAG_UNSIGNED, "unsigned int", objfile); + TARGET_INT_BIT / TARGET_CHAR_BIT, + TYPE_FLAG_UNSIGNED, "unsigned int", objfile); break; case FT_LONG: type = init_type (TYPE_CODE_INT, - TARGET_LONG_BIT / TARGET_CHAR_BIT, - 0, "long_integer", objfile); + TARGET_LONG_BIT / TARGET_CHAR_BIT, + 0, "long_integer", objfile); break; case FT_SIGNED_LONG: type = init_type (TYPE_CODE_INT, - TARGET_LONG_BIT / TARGET_CHAR_BIT, - 0, "long_integer", objfile); + TARGET_LONG_BIT / TARGET_CHAR_BIT, + 0, "long_integer", objfile); break; case FT_UNSIGNED_LONG: type = init_type (TYPE_CODE_INT, - TARGET_LONG_BIT / TARGET_CHAR_BIT, - TYPE_FLAG_UNSIGNED, "unsigned long", objfile); + TARGET_LONG_BIT / TARGET_CHAR_BIT, + TYPE_FLAG_UNSIGNED, "unsigned long", objfile); break; case FT_LONG_LONG: type = init_type (TYPE_CODE_INT, - TARGET_LONG_LONG_BIT / TARGET_CHAR_BIT, - 0, "long_long_integer", objfile); + TARGET_LONG_LONG_BIT / TARGET_CHAR_BIT, + 0, "long_long_integer", objfile); break; case FT_SIGNED_LONG_LONG: type = init_type (TYPE_CODE_INT, - TARGET_LONG_LONG_BIT / TARGET_CHAR_BIT, - 0, "long_long_integer", objfile); + TARGET_LONG_LONG_BIT / TARGET_CHAR_BIT, + 0, "long_long_integer", objfile); break; case FT_UNSIGNED_LONG_LONG: type = init_type (TYPE_CODE_INT, - TARGET_LONG_LONG_BIT / TARGET_CHAR_BIT, - TYPE_FLAG_UNSIGNED, "unsigned long long", objfile); + TARGET_LONG_LONG_BIT / TARGET_CHAR_BIT, + TYPE_FLAG_UNSIGNED, "unsigned long long", objfile); break; case FT_FLOAT: type = init_type (TYPE_CODE_FLT, - TARGET_FLOAT_BIT / TARGET_CHAR_BIT, - 0, "float", objfile); + TARGET_FLOAT_BIT / TARGET_CHAR_BIT, + 0, "float", objfile); break; case FT_DBL_PREC_FLOAT: type = init_type (TYPE_CODE_FLT, - TARGET_DOUBLE_BIT / TARGET_CHAR_BIT, - 0, "long_float", objfile); + TARGET_DOUBLE_BIT / TARGET_CHAR_BIT, + 0, "long_float", objfile); break; case FT_EXT_PREC_FLOAT: type = init_type (TYPE_CODE_FLT, - TARGET_LONG_DOUBLE_BIT / TARGET_CHAR_BIT, - 0, "long_long_float", objfile); + TARGET_LONG_DOUBLE_BIT / TARGET_CHAR_BIT, + 0, "long_long_float", objfile); break; } return (type); @@ -8239,16 +10322,16 @@ ada_dump_symtab (struct symtab *s) int i; fprintf (stderr, "New symtab: [\n"); fprintf (stderr, " Name: %s/%s;\n", - s->dirname ? s->dirname : "?", s->filename ? s->filename : "?"); + s->dirname ? s->dirname : "?", s->filename ? s->filename : "?"); fprintf (stderr, " Format: %s;\n", s->debugformat); if (s->linetable != NULL) { fprintf (stderr, " Line table (section %d):\n", s->block_line_section); for (i = 0; i < s->linetable->nitems; i += 1) - { - struct linetable_entry *e = s->linetable->item + i; - fprintf (stderr, " %4ld: %8lx\n", (long) e->line, (long) e->pc); - } + { + struct linetable_entry *e = s->linetable->item + i; + fprintf (stderr, " %4ld: %8lx\n", (long) e->line, (long) e->pc); + } } fprintf (stderr, "]\n"); } diff --git a/gdb/ada-lang.h b/gdb/ada-lang.h index 54e56bb..0ec47b4 100644 --- a/gdb/ada-lang.h +++ b/gdb/ada-lang.h @@ -1,5 +1,6 @@ /* Ada language support definitions for GDB, the GNU debugger. - Copyright 1992, 1997 Free Software Foundation, Inc. + Copyright 1992, 1997, 1998, 1999, 2000, 2001, 2002, 2003, 2004 + Free Software Foundation, Inc. This file is part of GDB. @@ -24,130 +25,103 @@ struct partial_symbol; #include "value.h" #include "gdbtypes.h" +#include "breakpoint.h" + +/* Names of specific files known to be part of the runtime + system and that might consider (confusing) debugging information. + Each name (a basic regular expression string) is followed by a + comma. FIXME: Should be part of a configuration file. */ +#if defined(__alpha__) && defined(__osf__) && !defined(VXWORKS_TARGET) +#define ADA_KNOWN_RUNTIME_FILE_NAME_PATTERNS \ + "^[agis]-.*\\.ad[bs]$", \ + "/usr/shlib/libpthread\\.so", +#elif defined (__linux__) +#define ADA_KNOWN_RUNTIME_FILE_NAME_PATTERNS \ + "^[agis]-.*\\.ad[bs]$", \ + "/lib.*/libpthread\\.so[.0-9]*$", "/lib.*/libpthread\\.a$", \ + "/lib.*/libc\\.so[.0-9]*$", "/lib.*/libc\\.a$", +#endif -struct block; +#if !defined (ADA_KNOWN_RUNTIME_FILE_NAME_PATTERNS) +#define ADA_KNOWN_RUNTIME_FILE_NAME_PATTERNS \ + "^[agis]-.*\\.ad[bs]$", +#endif + +/* Names of compiler-generated auxiliary functions probably of no + interest to users. Each name (a basic regular expression string) + is followed by a comma. */ +#define ADA_KNOWN_AUXILIARY_FUNCTION_NAME_PATTERNS \ + "___clean[.a-zA-Z0-9_]*$", -/* A macro to reorder the bytes of an address depending on the - endiannes of the target. */ -#define EXTRACT_ADDRESS(x) ((void *) extract_unsigned_integer (&(x), sizeof (x))) -/* A macro to reorder the bytes of an int depending on the endiannes - of the target */ -#define EXTRACT_INT(x) ((int) extract_signed_integer (&(x), sizeof (x))) +/* The maximum number of frame levels searched for non-local, + * non-global symbols. This limit exists as a precaution to prevent + * infinite search loops when the stack is screwed up. */ +#define MAX_ENCLOSING_FRAME_LEVELS 7 -/* Chain of cleanups for arguments of OP_UNRESOLVED_VALUE names. Created in - yyparse and freed in ada_resolve. */ -extern struct cleanup *unresolved_names; +/* Maximum number of steps followed in looking for the ultimate + referent of a renaming. This prevents certain infinite loops that + can otherwise result. */ +#define MAX_RENAMING_CHAIN_LENGTH 10 -/* Corresponding mangled/demangled names and opcodes for Ada user-definable +struct block; + +/* Corresponding encoded/decoded names and opcodes for Ada user-definable operators. */ struct ada_opname_map { - const char *mangled; - const char *demangled; + const char *encoded; + const char *decoded; enum exp_opcode op; }; -/* Table of Ada operators in mangled and demangled forms. */ +/* Table of Ada operators in encoded and decoded forms. */ /* Defined in ada-lang.c */ extern const struct ada_opname_map ada_opname_table[]; -/* The maximum number of tasks known to the Ada runtime */ -extern const int MAX_NUMBER_OF_KNOWN_TASKS; - -/* Identifiers for Ada attributes that need special processing. Be sure - to update the table attribute_names in ada-lang.c whenever you change this. - */ - -enum ada_attribute -{ - /* Invalid attribute for error checking. */ - ATR_INVALID, - - ATR_FIRST, - ATR_LAST, - ATR_LENGTH, - ATR_IMAGE, - ATR_IMG, - ATR_MAX, - ATR_MIN, - ATR_MODULUS, - ATR_POS, - ATR_SIZE, - ATR_TAG, - ATR_VAL, - - /* Dummy last attribute. */ - ATR_END -}; - -enum task_states -{ - Unactivated, - Runnable, - Terminated, - Activator_Sleep, - Acceptor_Sleep, - Entry_Caller_Sleep, - Async_Select_Sleep, - Delay_Sleep, - Master_Completion_Sleep, - Master_Phase_2_Sleep -}; - -extern char *ada_task_states[]; - -typedef struct -{ - char *P_ARRAY; - int *P_BOUNDS; -} -fat_string; - -typedef struct entry_call -{ - void *self; -} - *entry_call_link; - -struct task_fields -{ - int entry_num; -#if (defined (VXWORKS_TARGET) || !defined (i386)) \ - && !(defined (VXWORKS_TARGET) && defined (M68K_TARGET)) - int pad1; -#endif - char state; -#if (defined (VXWORKS_TARGET) && defined (M68K_TARGET)) - char pad_8bits; -#endif - void *parent; - int priority; - int current_priority; - fat_string image; - entry_call_link call; -#if (defined (sun) && defined (__SVR4)) && !defined (VXWORKS_TARGET) - int pad2; - unsigned thread; - unsigned lwp; -#else - void *thread; - void *lwp; -#endif -} -#if (defined (VXWORKS_TARGET) && defined (M68K_TARGET)) -__attribute__ ((packed)) -#endif - ; - -struct task_entry -{ - void *task_id; - int task_num; - int known_tasks_index; - struct task_entry *next_task; - void *thread; - void *lwp; - int stack_per; +enum ada_operator + { + /* X IN A'RANGE(N). N is an immediate operand, surrounded by + BINOP_IN_BOUNDS before and after. A is an array, X an index + value. Evaluates to true iff X is within range of the Nth + dimension (1-based) of A. (A multi-dimensional array + type is represented as array of array of ...) */ + BINOP_IN_BOUNDS = OP_EXTENDED0, + + /* X IN L .. U. True iff L <= X <= U. */ + TERNOP_IN_RANGE, + + /* Ada attributes ('Foo). */ + OP_ATR_FIRST, + OP_ATR_LAST, + OP_ATR_LENGTH, + OP_ATR_IMAGE, + OP_ATR_MAX, + OP_ATR_MIN, + OP_ATR_MODULUS, + OP_ATR_POS, + OP_ATR_SIZE, + OP_ATR_TAG, + OP_ATR_VAL, + + /* Ada type qualification. It is encoded as for UNOP_CAST, above, + and denotes the TYPE'(EXPR) construct. */ + UNOP_QUAL, + + /* X IN TYPE. The `TYPE' argument is immediate, with + UNOP_IN_RANGE before and after it. True iff X is a member of + type TYPE (typically a subrange). */ + UNOP_IN_RANGE, + + /* End marker */ + OP_ADA_LAST + }; + +/* A triple, (symbol, block, symtab), representing one instance of a + * symbol-lookup operation. */ +struct ada_symbol_info { + struct symbol* sym; + struct block* block; + struct symtab* symtab; }; extern struct type *builtin_type_ada_int; @@ -162,33 +136,40 @@ extern struct type *builtin_type_ada_natural; extern struct type *builtin_type_ada_positive; extern struct type *builtin_type_ada_system_address; -/* Assuming V points to an array of S objects, make sure that it contains at +/* The maximum number of tasks known to the Ada runtime */ +extern const int MAX_NUMBER_OF_KNOWN_TASKS; + +/* Assuming V points to an array of S objects, make sure that it contains at least M objects, updating V and S as necessary. */ -#define GROW_VECT(v, s, m) \ +#define GROW_VECT(v, s, m) \ if ((s) < (m)) grow_vect ((void**) &(v), &(s), (m), sizeof(*(v))); extern void grow_vect (void **, size_t *, size_t, int); -extern int ada_parse (void); /* Defined in ada-exp.y */ +extern int ada_get_field_index (const struct type *type, + const char *field_name, + int maybe_missing); -extern void ada_error (char *); /* Defined in ada-exp.y */ +extern int ada_parse (void); /* Defined in ada-exp.y */ - /* Defined in ada-typeprint.c */ +extern void ada_error (char *); /* Defined in ada-exp.y */ + + /* Defined in ada-typeprint.c */ extern void ada_print_type (struct type *, char *, struct ui_file *, int, - int); + int); extern int ada_val_print (struct type *, char *, int, CORE_ADDR, - struct ui_file *, int, int, int, - enum val_prettyprint); + struct ui_file *, int, int, int, + enum val_prettyprint); extern int ada_value_print (struct value *, struct ui_file *, int, - enum val_prettyprint); + enum val_prettyprint); - /* Defined in ada-lang.c */ + /* Defined in ada-lang.c */ extern struct value *value_from_contents_and_address (struct type *, char *, - CORE_ADDR); + CORE_ADDR); extern void ada_emit_char (int, struct ui_file *, int, int); @@ -197,10 +178,10 @@ extern void ada_printchar (int, struct ui_file *); extern void ada_printstr (struct ui_file *, char *, unsigned int, int, int); extern void ada_convert_actuals (struct value *, int, struct value **, - CORE_ADDR *); + CORE_ADDR *); extern struct value *ada_value_subscript (struct value *, int, - struct value **); + struct value **); extern struct type *ada_array_element_type (struct type *, int); @@ -208,13 +189,11 @@ extern int ada_array_arity (struct type *); struct type *ada_type_of_array (struct value *, int); -extern struct value *ada_coerce_to_simple_array (struct value *); - extern struct value *ada_coerce_to_simple_array_ptr (struct value *); -extern int ada_is_simple_array (struct type *); +extern int ada_is_simple_array_type (struct type *); -extern int ada_is_array_descriptor (struct type *); +extern int ada_is_array_descriptor_type (struct type *); extern int ada_is_bogus_array_descriptor (struct type *); @@ -222,34 +201,43 @@ extern struct type *ada_index_type (struct type *, int); extern struct value *ada_array_bound (struct value *, int, int); -extern int ada_lookup_symbol_list (const char *, struct block *, - domain_enum, struct symbol ***, - struct block ***); +extern char *ada_decode_symbol (const struct general_symbol_info*); -extern char *ada_fold_name (const char *); +extern const char *ada_decode (const char*); -extern struct symbol *ada_lookup_symbol (const char *, struct block *, - domain_enum); +extern enum language ada_update_initial_language (enum language, + struct partial_symtab*); -extern struct minimal_symbol *ada_lookup_minimal_symbol (const char *); +extern void clear_ada_sym_cache (void); -extern void ada_resolve (struct expression **, struct type *); +extern char **ada_make_symbol_completion_list (const char *text0, + const char *word); -extern int ada_resolve_function (struct symbol **, struct block **, int, - struct value **, int, const char *, - struct type *); +extern int ada_lookup_symbol_list (const char *, const struct block *, + domain_enum, struct ada_symbol_info**); + +extern char *ada_fold_name (const char *); + +extern struct symbol *ada_lookup_symbol (const char *, const struct block *, + domain_enum, int *, + struct symtab **); + +extern struct minimal_symbol *ada_lookup_simple_minsym (const char *); extern void ada_fill_in_ada_prototype (struct symbol *); -extern int user_select_syms (struct symbol **, struct block **, int, int); +extern int user_select_syms (struct ada_symbol_info *, int, int); extern int get_selections (int *, int, int, int, char *); extern char *ada_start_decode_line_1 (char *); extern struct symtabs_and_lines ada_finish_decode_line_1 (char **, - struct symtab *, - int, char ***); + struct symtab *, + int, char ***); + +extern struct symtabs_and_lines ada_sals_for_line (const char*, int, + int, char***, int); extern int ada_scan_number (const char *, int, LONGEST *, int *); @@ -260,8 +248,8 @@ extern int ada_is_ignored_field (struct type *, int); extern int ada_is_packed_array_type (struct type *); extern struct value *ada_value_primitive_packed_val (struct value *, char *, - long, int, int, - struct type *); + long, int, int, + struct type *); extern struct type *ada_coerce_to_simple_array_type (struct type *); @@ -269,12 +257,16 @@ extern int ada_is_character_type (struct type *); extern int ada_is_string_type (struct type *); -extern int ada_is_tagged_type (struct type *); +extern int ada_is_tagged_type (struct type *, int); + +extern int ada_is_tag_type (struct type *); extern struct type *ada_tag_type (struct value *); extern struct value *ada_value_tag (struct value *); +extern const char *ada_tag_name (struct value *); + extern int ada_is_parent_field (struct type *, int); extern int ada_is_wrapper_field (struct type *, int); @@ -289,24 +281,20 @@ extern int ada_in_variant (LONGEST, struct type *, int); extern char *ada_variant_discrim_name (struct type *); -extern struct type *ada_lookup_struct_elt_type (struct type *, char *, int, - int *); - extern struct value *ada_value_struct_elt (struct value *, char *, char *); -extern struct value *ada_search_struct_field (char *, struct value *, int, - struct type *); - extern int ada_is_aligner_type (struct type *); extern struct type *ada_aligned_type (struct type *); extern char *ada_aligned_value_addr (struct type *, char *); -extern const char *ada_attribute_name (int); +extern const char *ada_attribute_name (enum exp_opcode); extern int ada_is_fixed_point_type (struct type *); +extern int ada_is_system_address_type (struct type *); + extern DOUBLEST ada_delta (struct type *); extern DOUBLEST ada_fixed_to_float (struct type *, LONGEST); @@ -323,30 +311,37 @@ extern struct type *ada_system_address_type (void); extern int ada_which_variant_applies (struct type *, struct type *, char *); -extern struct value *ada_to_fixed_value (struct type *, char *, CORE_ADDR, - struct value *); - extern struct type *ada_to_fixed_type (struct type *, char *, CORE_ADDR, - struct value *); + struct value *); + +extern struct type * + ada_template_to_fixed_record_type_1 (struct type *type, char *valaddr, + CORE_ADDR address, struct value *dval0, + int keep_dynamic_fields); extern int ada_name_prefix_len (const char *); extern char *ada_type_name (struct type *); extern struct type *ada_find_parallel_type (struct type *, - const char *suffix); + const char *suffix); + +extern LONGEST get_int_var_value (char *, int *); -extern LONGEST get_int_var_value (char *, char *, int *); +extern struct symbol *ada_find_any_symbol (const char *name); extern struct type *ada_find_any_type (const char *name); +extern struct symbol *ada_find_renaming_symbol (const char *name, + struct block *block); + extern int ada_prefer_type (struct type *, struct type *); extern struct type *ada_get_base_type (struct type *); extern struct type *ada_completed_type (struct type *); -extern char *ada_mangle (const char *); +extern char *ada_encode (const char *); extern const char *ada_enum_name (const char *); @@ -364,29 +359,38 @@ extern const char *ada_renaming_type (struct type *); extern int ada_is_object_renaming (struct symbol *); -extern const char *ada_simple_renamed_entity (struct symbol *); +extern char *ada_simple_renamed_entity (struct symbol *); extern char *ada_breakpoint_rewrite (char *, int *); +extern char *ada_main_name (void); + /* Tasking-related: ada-tasks.c */ extern int valid_task_id (int); -extern int get_current_task (void); - extern void init_task_list (void); -extern void *get_self_id (void); +extern int ada_is_exception_breakpoint (bpstat bs); + +extern void ada_adjust_exception_stop (bpstat bs); -extern int get_current_task (void); +extern void ada_print_exception_stop (bpstat bs); -extern int get_entry_number (void *); +extern int ada_get_current_task (ptid_t); -extern void ada_report_exception_break (struct breakpoint *); +extern int breakpoint_ada_task_match (CORE_ADDR, ptid_t); + +extern int ada_print_exception_breakpoint_nontask (struct breakpoint *); + +extern void ada_print_exception_breakpoint_task (struct breakpoint *); extern int ada_maybe_exception_partial_symbol (struct partial_symbol *sym); extern int ada_is_exception_sym (struct symbol *sym); +extern void ada_find_printable_frame (struct frame_info *fi); + +extern void ada_reset_thread_registers (void); #endif diff --git a/gdb/ada-lex.l b/gdb/ada-lex.l index 139e3aa..ca0414c 100644 --- a/gdb/ada-lex.l +++ b/gdb/ada-lex.l @@ -1,5 +1,5 @@ /* FLEX lexer for Ada expressions, for GDB. - Copyright (C) 1994, 1997, 2000 + Copyright (C) 1994, 1997, 1998, 2000, 2001, 2002, 2003 Free Software Foundation, Inc. This file is part of GDB. @@ -45,20 +45,23 @@ EXP (e[+-]{NUM10}) POSEXP (e"+"?{NUM10}) %{ +#define malloc xmalloc +#define free xfree + #define NUMERAL_WIDTH 256 #define LONGEST_SIGN ((ULONGEST) 1 << (sizeof(LONGEST) * HOST_CHAR_BIT - 1)) -/* Temporary staging for numeric literals. */ -static char numbuf[NUMERAL_WIDTH]; - static void canonicalizeNumeral (char* s1, const char*); -static int processInt (const char*, const char*, const char*); -static int processReal (const char*); -static int processId (const char*, int); -static int processAttribute (const char*); -static int find_dot_all (const char*); +/* Temporary staging for numeric literals. */ +static char numbuf[NUMERAL_WIDTH]; + static void canonicalizeNumeral (char *s1, const char *); +static int processInt (const char *, const char *, const char *); +static int processReal (const char *); +static int processId (const char *, int); +static int processAttribute (const char *); +static int find_dot_all (const char *); #undef YY_DECL -#define YY_DECL static int yylex ( void ) +#define YY_DECL static int yylex ( void ) #undef YY_INPUT #define YY_INPUT(BUF, RESULT, MAX_SIZE) \ @@ -74,15 +77,15 @@ static int find_dot_all (const char*); static char *tempbuf = NULL; static int tempbufsize = 0; static int tempbuf_len; -static struct block* left_block_context; +static struct block *left_block_context; static void resize_tempbuf (unsigned int); -static void block_lookup (char*, char*); +static void block_lookup (char *, char *); -static int name_lookup (char*, char*, int*); +static int name_lookup (char *, char *, int *, int); -static int find_dot_all (const char*); +static int find_dot_all (const char *); %} @@ -94,20 +97,20 @@ static int find_dot_all (const char*); "--".* { yyterminate(); } -{NUM10}{POSEXP} { - canonicalizeNumeral (numbuf, yytext); +{NUM10}{POSEXP} { + canonicalizeNumeral (numbuf, yytext); return processInt (NULL, numbuf, strrchr(numbuf, 'e')+1); } -{NUM10} { - canonicalizeNumeral (numbuf, yytext); +{NUM10} { + canonicalizeNumeral (numbuf, yytext); return processInt (NULL, numbuf, NULL); } {NUM10}"#"{HEXDIG}({HEXDIG}|_)*"#"{POSEXP} { canonicalizeNumeral (numbuf, yytext); return processInt (numbuf, - strchr (numbuf, '#') + 1, + strchr (numbuf, '#') + 1, strrchr(numbuf, '#') + 1); } @@ -123,12 +126,12 @@ static int find_dot_all (const char*); {NUM10}"."{NUM10}{EXP} { - canonicalizeNumeral (numbuf, yytext); + canonicalizeNumeral (numbuf, yytext); return processReal (numbuf); } {NUM10}"."{NUM10} { - canonicalizeNumeral (numbuf, yytext); + canonicalizeNumeral (numbuf, yytext); return processReal (numbuf); } @@ -156,7 +159,7 @@ static int find_dot_all (const char*); \"{OPER}\"/{WHITE}*"(" { return processId (yytext, yyleng); } -<INITIAL>\" { +<INITIAL>\" { tempbuf_len = 0; BEGIN IN_STRING; } @@ -188,10 +191,10 @@ static int find_dot_all (const char*); tempbuf_len += yyleng-4; } -if { - while (*lexptr != 'i' && *lexptr != 'I') - lexptr -= 1; - yyrestart(NULL); +if { + while (*lexptr != 'i' && *lexptr != 'I') + lexptr -= 1; + yyrestart(NULL); return 0; } @@ -234,51 +237,53 @@ xor { return XOR; } yyrestart(NULL); return 0; } - else + else return ','; } "(" { paren_depth += 1; return '('; } -")" { if (paren_depth == 0) +")" { if (paren_depth == 0) { lexptr -= 1; yyrestart(NULL); return 0; } - else + else { - paren_depth -= 1; + paren_depth -= 1; return ')'; } } "."{WHITE}*all { return DOT_ALL; } -"."{WHITE}*{ID} { +"."{WHITE}*{ID} { processId (yytext+1, yyleng-1); - return DOT_ID; + return DOT_ID; } -{ID}({WHITE}*"."{WHITE}*({ID}|\"{OPER}\"))*(" "*"'")? { +{ID}({WHITE}*"."{WHITE}*({ID}|\"{OPER}\"))*(" "*"'")? { int all_posn = find_dot_all (yytext); int token_type, segments, k; int quote_follows; - if (all_posn == -1 && yytext[yyleng-1] == '\'') + if (all_posn == -1 && yytext[yyleng-1] == '\'') { quote_follows = 1; - do { - yyless (yyleng-1); + do { + yyless (yyleng-1); } while (yytext[yyleng-1] == ' '); } else - quote_follows = 0; - + quote_follows = 0; + if (all_posn >= 0) yyless (all_posn); processId(yytext, yyleng); - segments = name_lookup (ada_mangle (yylval.ssym.stoken.ptr), - yylval.ssym.stoken.ptr, &token_type); + segments = name_lookup (ada_encode (yylval.ssym.stoken.ptr), + yylval.ssym.stoken.ptr, + &token_type, + MAX_RENAMING_CHAIN_LENGTH); left_block_context = NULL; for (k = yyleng; segments > 0 && k > 0; k -= 1) { @@ -289,7 +294,7 @@ xor { return XOR; } if (k <= 0) error ("confused by name %s", yytext); yyless (k); - if (quote_follows) + if (quote_follows) BEGIN BEFORE_QUAL_QUOTE; return token_type; } @@ -303,37 +308,21 @@ xor { return XOR; } return BLOCKNAME; } -{ID}({WHITE}*"."{WHITE}*({ID}|\"{OPER}\"))*{WHITE}*:: { +{ID}({WHITE}*"."{WHITE}*({ID}|\"{OPER}\"))*{WHITE}*:: { processId(yytext, yyleng-2); - block_lookup (ada_mangle (yylval.ssym.stoken.ptr), + block_lookup (ada_encode (yylval.ssym.stoken.ptr), yylval.ssym.stoken.ptr); return BLOCKNAME; } [{}@] { return yytext[0]; } -"$$" { yylval.lval = -1; return LAST; } -"$$"{DIG}+ { yylval.lval = -atoi(yytext+2); return LAST; } -"$" { yylval.lval = 0; return LAST; } -"$"{DIG}+ { yylval.lval = atoi(yytext+1); return LAST; } - - /* REGISTERS AND GDB CONVENIENCE VARIABLES */ -"$"({LETTER}|{DIG}|"$")+ { - int c; - for (c = 0; c < NUM_REGS; c++) - if (REGISTER_NAME (c) && - strcmp (yytext + 1, REGISTER_NAME (c)) == 0) - { - yylval.lval = c; - return REGNAME; - } +"$"({LETTER}|{DIG}|"$")* { yylval.sval.ptr = yytext; yylval.sval.length = yyleng; - yylval.ivar = - lookup_internalvar (copy_name (yylval.sval) + 1); - return INTERNAL_VARIABLE; + return SPECIAL_VARIABLE; } /* CATCH-ALL ERROR CASE */ @@ -346,34 +335,31 @@ xor { return XOR; } /* Initialize the lexer for processing new expression */ void -lexer_init (FILE* inp) +lexer_init (FILE *inp) { BEGIN INITIAL; yyrestart (inp); } -/* Make sure that tempbuf points at an array at least N characters long. */ +/* Make sure that tempbuf points at an array at least N characters long. */ static void -resize_tempbuf (n) - unsigned int n; +resize_tempbuf (unsigned int n) { if (tempbufsize < n) { tempbufsize = (n+63) & ~63; - tempbuf = (char*) xrealloc (tempbuf, tempbufsize); + tempbuf = (char *) xrealloc (tempbuf, tempbufsize); } } - -/* Copy S2 to S1, removing all underscores, and downcasing all letters. */ + +/* Copy S2 to S1, removing all underscores, and downcasing all letters. */ static void -canonicalizeNumeral (s1,s2) - char* s1; - const char* s2; +canonicalizeNumeral (char *s1, const char *s2) { - for (; *s2 != '\000'; s2 += 1) + for (; *s2 != '\000'; s2 += 1) { if (*s2 != '_') { @@ -386,25 +372,22 @@ canonicalizeNumeral (s1,s2) #define HIGH_BYTE_POSN ((sizeof (ULONGEST) - 1) * HOST_CHAR_BIT) -/* True (non-zero) iff DIGIT is a valid digit in radix BASE, +/* True (non-zero) iff DIGIT is a valid digit in radix BASE, where 2 <= BASE <= 16. */ static int -is_digit_in_base (digit, base) - unsigned char digit; - int base; +is_digit_in_base (unsigned char digit, int base) { if (!isxdigit (digit)) return 0; if (base <= 10) return (isdigit (digit) && digit < base + '0'); - else + else return (isdigit (digit) || tolower (digit) < base - 10 + 'a'); } static int -digit_to_int (c) - unsigned char c; +digit_to_int (unsigned char c) { if (isdigit (c)) return c - '0'; @@ -412,12 +395,9 @@ digit_to_int (c) return tolower (c) - 'a' + 10; } -/* As for strtoul, but for ULONGEST results. */ +/* As for strtoul, but for ULONGEST results. */ ULONGEST -strtoulst (num, trailer, base) - const char *num; - const char **trailer; - int base; +strtoulst (const char *num, const char **trailer, int base) { unsigned int high_part; ULONGEST result; @@ -437,7 +417,7 @@ strtoulst (num, trailer, base) result = result*base + digit_to_int (num[i]); high_part = high_part*base + (unsigned int) (result >> HIGH_BYTE_POSN); result &= ((ULONGEST) 1 << HIGH_BYTE_POSN) - 1; - if (high_part > 0xff) + if (high_part > 0xff) { errno = ERANGE; result = high_part = 0; @@ -456,26 +436,23 @@ strtoulst (num, trailer, base) /* Interprets the prefix of NUM that consists of digits of the given BASE as an integer of that BASE, with the string EXP as an exponent. Puts value in yylval, and returns INT, if the string is valid. Causes - an error if the number is improperly formated. BASE, if NULL, defaults - to "10", and EXP to "1". The EXP does not contain a leading 'e' or 'E'. */ + an error if the number is improperly formated. BASE, if NULL, defaults + to "10", and EXP to "1". The EXP does not contain a leading 'e' or 'E'. */ static int -processInt (base0, num0, exp0) - const char* num0; - const char* base0; - const char* exp0; +processInt (const char *base0, const char *num0, const char *exp0) { ULONGEST result; long exp; int base; - char* trailer; + char *trailer; if (base0 == NULL) base = 10; else - { - base = strtol (base0, (char**) NULL, 10); + { + base = strtol (base0, (char **) NULL, 10); if (base < 2 || base > 16) error ("Invalid base: %d.", base); } @@ -483,23 +460,23 @@ processInt (base0, num0, exp0) if (exp0 == NULL) exp = 0; else - exp = strtol(exp0, (char**) NULL, 10); + exp = strtol(exp0, (char **) NULL, 10); errno = 0; - result = strtoulst (num0, &trailer, base); + result = strtoulst (num0, (const char **) &trailer, base); if (errno == ERANGE) error ("Integer literal out of range"); if (isxdigit(*trailer)) error ("Invalid digit `%c' in based literal", *trailer); - while (exp > 0) + while (exp > 0) { if (result > (ULONG_MAX / base)) error ("Integer literal out of range"); result *= base; exp -= 1; } - + if ((result >> (TARGET_INT_BIT-1)) == 0) yylval.typed_val.type = builtin_type_ada_int; else if ((result >> (TARGET_LONG_BIT-1)) == 0) @@ -507,48 +484,47 @@ processInt (base0, num0, exp0) else if (((result >> (TARGET_LONG_BIT-1)) >> 1) == 0) { /* We have a number representable as an unsigned integer quantity. - For consistency with the C treatment, we will treat it as an + For consistency with the C treatment, we will treat it as an anonymous modular (unsigned) quantity. Alas, the types are such - that we need to store .val as a signed quantity. Sorry + that we need to store .val as a signed quantity. Sorry for the mess, but C doesn't officially guarantee that a simple assignment does the trick (no, it doesn't; read the reference manual). */ yylval.typed_val.type = builtin_type_unsigned_long; if (result & LONGEST_SIGN) - yylval.typed_val.val = - (LONGEST) (result & ~LONGEST_SIGN) + yylval.typed_val.val = + (LONGEST) (result & ~LONGEST_SIGN) - (LONGEST_SIGN>>1) - (LONGEST_SIGN>>1); else yylval.typed_val.val = (LONGEST) result; return INT; } - else + else yylval.typed_val.type = builtin_type_ada_long_long; yylval.typed_val.val = (LONGEST) result; return INT; } +#if defined (PRINTF_HAS_LONG_DOUBLE) +# undef PRINTF_HAS_LONG_DOUBLE +# define PRINTF_HAS_LONG_DOUBLE 1 +#else +# define PRINTF_HAS_LONG_DOUBLE 0 +#endif + static int -processReal (num0) - const char* num0; +processReal (const char *num0) { - if (sizeof (DOUBLEST) <= sizeof (float)) - sscanf (num0, "%g", &yylval.typed_val_float.dval); - else if (sizeof (DOUBLEST) <= sizeof (double)) - sscanf (num0, "%lg", &yylval.typed_val_float.dval); +#if defined (PRINTF_HAS_LONG_DOUBLE) + if (sizeof (DOUBLEST) > sizeof (double)) + sscanf (num0, "%Lg", &yylval.typed_val_float.dval); else +#endif { -#ifdef PRINTF_HAS_LONG_DOUBLE - sscanf (num0, "%Lg", &yylval.typed_val_float.dval); -#else - /* Scan it into a double, then convert and assign it to the - long double. This at least wins with values representable - in the range of doubles. */ double temp; sscanf (num0, "%lg", &temp); yylval.typed_val_float.dval = temp; -#endif } yylval.typed_val_float.type = builtin_type_ada_float; @@ -561,26 +537,22 @@ processReal (num0) } static int -processId (name0, len) - const char *name0; - int len; +processId (const char *name0, int len) { - char* name = xmalloc (len + 11); + char *name = obstack_alloc (&temp_parse_space, len + 11); int i0, i; - -/* add_name_string_cleanup (name); */ -/* FIXME: add_name_string_cleanup should be defined in parse.c */ + while (len > 0 && isspace (name0[len-1])) len -= 1; i = i0 = 0; - while (i0 < len) + while (i0 < len) { if (isalnum (name0[i0])) { name[i] = tolower (name0[i0]); i += 1; i0 += 1; } - else switch (name0[i0]) + else switch (name0[i0]) { default: name[i] = name0[i0]; @@ -617,19 +589,16 @@ processId (name0, len) return NAME; } -static void -block_lookup (name, err_name) - char* name; - char* err_name; +static void +block_lookup (char *name, char *err_name) { - struct symbol** syms; - struct block** blocks; + struct ada_symbol_info *syms; int nsyms; struct symtab *symtab; nsyms = ada_lookup_symbol_list (name, left_block_context, - VAR_DOMAIN, &syms, &blocks); + VAR_DOMAIN, &syms); if (left_block_context == NULL && - (nsyms == 0 || SYMBOL_CLASS (syms[0]) != LOC_BLOCK)) + (nsyms == 0 || SYMBOL_CLASS (syms[0].sym) != LOC_BLOCK)) symtab = lookup_symtab (name); else symtab = NULL; @@ -637,72 +606,85 @@ block_lookup (name, err_name) if (symtab != NULL) left_block_context = yylval.bval = BLOCKVECTOR_BLOCK (BLOCKVECTOR (symtab), STATIC_BLOCK); - else if (nsyms == 0 || SYMBOL_CLASS (syms[0]) != LOC_BLOCK) + else if (nsyms == 0 || SYMBOL_CLASS (syms[0].sym) != LOC_BLOCK) { if (left_block_context == NULL) error ("No file or function \"%s\".", err_name); else error ("No function \"%s\" in specified context.", err_name); } - else + else { - left_block_context = yylval.bval = SYMBOL_BLOCK_VALUE (syms[0]); + left_block_context = yylval.bval = SYMBOL_BLOCK_VALUE (syms[0].sym); if (nsyms > 1) warning ("Function name \"%s\" ambiguous here", err_name); } } -/* Look up NAME0 (assumed to be mangled) as a name in VAR_DOMAIN, +/* Look up NAME0 (assumed to be encoded) as a name in VAR_DOMAIN, setting *TOKEN_TYPE to NAME or TYPENAME, depending on what is - found. Try first the entire name, then the name without the last + found. Try first the entire name, then the name without the last segment (i.e., after the last .id), etc., and return the number of - segments that had to be removed to get a match. Calls error if no + segments that had to be removed to get a match. Try only the full + name if it starts with "standard__". Calls error if no matches are found, using ERR_NAME in any error message. When - exactly one symbol match is found, it is placed in yylval. */ - + exactly one symbol match is found, it is placed in yylval. When + the symbol is a renaming, follow at most DEPTH steps to find the + ultimate definition; cause error if depth exceeded. */ + static int -name_lookup (name0, err_name, token_type) - char* name0; - char* err_name; - int* token_type; +name_lookup (char *name0, char *err_name, int *token_type, int depth) { - struct symbol** syms; - struct block** blocks; - struct type* type; + struct ada_symbol_info *syms; + struct type *type; int len0 = strlen (name0); - char* name = savestring (name0, len0); + char *name = obsavestring (name0, len0, &temp_parse_space); int nsyms; int segments; - -/* add_name_string_cleanup (name);*/ -/* FIXME: add_name_string_cleanup should be defined in parse.c */ + + if (depth <= 0) + error ("Could not find renamed symbol \"%s\"", err_name); + yylval.ssym.stoken.ptr = name; yylval.ssym.stoken.length = strlen (name); for (segments = 0; ; segments += 1) { - struct type* preferred_type; + struct type *preferred_type; int i, preferred_index; - if (left_block_context == NULL) - nsyms = ada_lookup_symbol_list (name, expression_context_block, - VAR_DOMAIN, &syms, &blocks); + if (left_block_context == NULL) + nsyms = ada_lookup_symbol_list (name, expression_context_block, + VAR_DOMAIN, &syms); else - nsyms = ada_lookup_symbol_list (name, left_block_context, - VAR_DOMAIN, &syms, &blocks); + nsyms = ada_lookup_symbol_list (name, left_block_context, + VAR_DOMAIN, &syms); + + + /* Check for a type renaming. */ - /* Check for a type definition. */ + if (nsyms == 1 && !ada_is_object_renaming (syms[0].sym)) + { + struct symbol *renaming_sym = + ada_find_renaming_symbol (SYMBOL_LINKAGE_NAME (syms[0].sym), + syms[0].block); + + if (renaming_sym != NULL) + syms[0].sym = renaming_sym; + } + + /* Check for a type definition. */ /* Look for a symbol that doesn't denote void. This is (I think) a */ - /* temporary kludge to get around problems in GNAT output. */ + /* temporary kludge to get around problems in GNAT output. */ preferred_index = -1; preferred_type = NULL; for (i = 0; i < nsyms; i += 1) - switch (SYMBOL_CLASS (syms[i])) + switch (SYMBOL_CLASS (syms[i].sym)) { case LOC_TYPEDEF: - if (ada_prefer_type (SYMBOL_TYPE (syms[i]), preferred_type)) + if (ada_prefer_type (SYMBOL_TYPE (syms[i].sym), preferred_type)) { preferred_index = i; - preferred_type = SYMBOL_TYPE (syms[i]); + preferred_type = SYMBOL_TYPE (syms[i].sym); } break; case LOC_REGISTER: @@ -714,37 +696,38 @@ name_lookup (name0, err_name, token_type) case LOC_LOCAL_ARG: case LOC_BASEREG: case LOC_BASEREG_ARG: + case LOC_COMPUTED: + case LOC_COMPUTED_ARG: goto NotType; default: break; } if (preferred_type != NULL) { -/* if (TYPE_CODE (preferred_type) == TYPE_CODE_VOID) - error ("`%s' matches only void type name(s)", - ada_demangle (name)); -*/ -/* FIXME: ada_demangle should be defined in defs.h, and is located in ada-lang.c */ -/* else*/ if (ada_is_object_renaming (syms[preferred_index])) + if (TYPE_CODE (preferred_type) == TYPE_CODE_VOID) + error ("`%s' matches only void type name(s)", + ada_decode (name)); + else if (ada_is_object_renaming (syms[preferred_index].sym)) { - yylval.ssym.sym = syms[preferred_index]; + yylval.ssym.sym = syms[preferred_index].sym; *token_type = OBJECT_RENAMING; return segments; - } - else if (ada_renaming_type (SYMBOL_TYPE (syms[preferred_index])) + } + else if (ada_renaming_type (SYMBOL_TYPE (syms[preferred_index].sym)) != NULL) { int result; - const char* renaming = - ada_simple_renamed_entity (syms[preferred_index]); - char* new_name = xmalloc (strlen (renaming) + len0 - - yylval.ssym.stoken.length + 1); -/* add_name_string_cleanup (new_name);*/ -/* FIXME: add_name_string_cleanup should be defined in parse.c */ + char *renaming + = ada_simple_renamed_entity (syms[preferred_index].sym); + char *new_name + = (char *) obstack_alloc (&temp_parse_space, + strlen (renaming) + len0 + - yylval.ssym.stoken.length + 1); strcpy (new_name, renaming); + free (renaming); strcat (new_name, name0 + yylval.ssym.stoken.length); - result = name_lookup (new_name, err_name, token_type); - if (result > segments) + result = name_lookup (new_name, err_name, token_type, depth - 1); + if (result > segments) error ("Confused by renamed symbol."); return result; } @@ -753,16 +736,29 @@ name_lookup (name0, err_name, token_type) yylval.tval = preferred_type; *token_type = TYPENAME; return 0; - } + } } if (segments == 0) { type = lookup_primitive_typename (name); - if (type == NULL && DEPRECATED_STREQ ("system__address", name)) + if (type == NULL && strcmp ("system__address", name) == 0) type = builtin_type_ada_system_address; if (type != NULL) { + /* First check to see if we have a regular definition of this + type that just didn't happen to have been read yet. */ + int ntypes; + struct symbol *sym; + char *expanded_name = + (char *) alloca (strlen (name) + sizeof ("standard__")); + strcpy (expanded_name, "standard__"); + strcat (expanded_name, name); + sym = ada_lookup_symbol (expanded_name, NULL, + VAR_DOMAIN, NULL, NULL); + if (sym != NULL && SYMBOL_CLASS (sym) == LOC_TYPEDEF) + type = SYMBOL_TYPE (sym); + yylval.tval = type; *token_type = TYPENAME; return 0; @@ -770,17 +766,17 @@ name_lookup (name0, err_name, token_type) } NotType: - if (nsyms == 1) + if (nsyms == 1) { *token_type = NAME; - yylval.ssym.sym = syms[0]; + yylval.ssym.sym = syms[0].sym; yylval.ssym.msym = NULL; - yylval.ssym.block = blocks[0]; + yylval.ssym.block = syms[0].block; return segments; } else if (nsyms == 0) { int i; - yylval.ssym.msym = ada_lookup_minimal_symbol (name); + yylval.ssym.msym = ada_lookup_simple_minsym (name); if (yylval.ssym.msym != NULL) { yylval.ssym.sym = NULL; @@ -789,10 +785,14 @@ name_lookup (name0, err_name, token_type) return segments; } + if (segments == 0 + && strncmp (name, "standard__", sizeof ("standard__") - 1) == 0) + error ("No definition of \"%s\" found.", err_name); + for (i = yylval.ssym.stoken.length - 1; i > 0; i -= 1) { if (name[i] == '.') - { + { name[i] = '\0'; yylval.ssym.stoken.length = i; break; @@ -805,20 +805,20 @@ name_lookup (name0, err_name, token_type) break; } } - if (i <= 0) + if (i <= 0) { if (!have_full_symbols () && !have_partial_symbols () && left_block_context == NULL) error ("No symbol table is loaded. Use the \"file\" command."); if (left_block_context == NULL) - error ("No definition of \"%s\" in current context.", + error ("No definition of \"%s\" in current context.", err_name); else - error ("No definition of \"%s\" in specified context.", + error ("No definition of \"%s\" in specified context.", err_name); } } - else + else { *token_type = NAME; yylval.ssym.sym = NULL; @@ -833,10 +833,9 @@ name_lookup (name0, err_name, token_type) } /* Returns the position within STR of the '.' in a - '.{WHITE}*all' component of a dotted name, or -1 if there is none. */ + '.{WHITE}*all' component of a dotted name, or -1 if there is none. */ static int -find_dot_all (str) - const char* str; +find_dot_all (const char *str) { int i; for (i = 0; str[i] != '\000'; i += 1) @@ -844,7 +843,7 @@ find_dot_all (str) if (str[i] == '.') { int i0 = i; - do + do i += 1; while (isspace (str[i])); if (strcmp (str+i, "all") == 0 @@ -853,15 +852,13 @@ find_dot_all (str) } } return -1; -} +} /* Returns non-zero iff string SUBSEQ matches a subsequence of STR, ignoring - case. */ + case. */ static int -subseqMatch (subseq, str) - const char* subseq; - const char* str; +subseqMatch (const char *subseq, const char *str) { if (subseq[0] == '\0') return 1; @@ -872,9 +869,9 @@ subseqMatch (subseq, str) else return subseqMatch (subseq, str+1); } - -static struct { const char* name; int code; } + +static struct { const char *name; int code; } attributes[] = { { "address", TICK_ADDRESS }, { "unchecked_access", TICK_ACCESS }, @@ -898,8 +895,7 @@ attributes[] = { abbreviation STR. */ static int -processAttribute (str) - const char* str; +processAttribute (const char *str) { int i, k; @@ -908,11 +904,11 @@ processAttribute (str) return attributes[i].code; for (i = 0, k = -1; attributes[i].code != -1; i += 1) - if (subseqMatch (str, attributes[i].name)) + if (subseqMatch (str, attributes[i].name)) { if (k == -1) k = i; - else + else error ("ambiguous attribute name: `%s'", str); } if (k == -1) @@ -922,7 +918,7 @@ processAttribute (str) } int -yywrap() +yywrap(void) { return 1; } diff --git a/gdb/ada-tasks.c b/gdb/ada-tasks.c index f753712..2592617 100644 --- a/gdb/ada-tasks.c +++ b/gdb/ada-tasks.c @@ -1,10 +1,10 @@ -/* file ada-tasks.c: Ada tasking control for GDB - Copyright 1997 Free Software Foundation, Inc. - Contributed by Ada Core Technologies, Inc -. +/* File ada-tasks.c: Ada tasking control for GDB + Copyright 1997, 1998, 1999, 2000, 2001, 2002, 2003, 2004 + Free Software Foundation, Inc. + Contributed by Ada Core Technologies, Inc. + This file is part of GDB. - [$Id$] Authors: Roch-Alexandre Nomine Beguin, Arnaud Charlet <charlet@gnat.com> This program is free software; you can redistribute it and/or modify @@ -15,6 +15,7 @@ */ #include <ctype.h> +#include <gdb_string.h> #include "defs.h" #include "command.h" #include "value.h" @@ -22,94 +23,294 @@ #include "inferior.h" #include "symtab.h" #include "target.h" -#include "regcache.h" #include "gdbcore.h" +#include "gdbthread.h" +#include "regcache.h" /* for registers_changed */ -#if (defined(__alpha__) && defined(__osf__) && !defined(__alpha_vxworks)) +#if defined (__fsu__) || defined (HAVE_SPYTHREAD) \ + || (defined(__alpha__) && defined(__osf__) && !defined(__alpha_vxworks)) #include <sys/procfs.h> #endif -#if (defined(__alpha__) && defined(__osf__) && !defined(VXWORKS_TARGET)) +#if defined (__fsu__) || defined (HAVE_SPYTHREAD) \ + || (defined(__alpha__) && defined(__osf__) && !defined(VXWORKS_TARGET)) #include "gregset.h" #endif -#include "ada-lang.h" +#ifdef I386_GNULINUX_TARGET +#include "gdb_thread_db.h" +#endif -/* FIXME: move all this conditional compilation in description - files or in configure.in */ +#if defined (HAVE_SPYTHREAD) +#include "irix6-spyThread.h" +#endif -#if defined (VXWORKS_TARGET) -#define THREAD_TO_PID(tid,lwpid) (tid) +#include "ada-lang.h" +#include "observer.h" -#elif defined (linux) -#define THREAD_TO_PID(tid,lwpid) (0) +enum task_states +{ + Unactivated, + Runnable, + Terminated, + Activator_Sleep, + Acceptor_Sleep, + Entry_Caller_Sleep, + Async_Select_Sleep, + Delay_Sleep, + Master_Completion_Sleep, + Master_Phase_2_Sleep +}; -#elif (defined (sun) && defined (__SVR4)) -#define THREAD_TO_PID thread_to_pid +struct task_control_block +{ + char state; + CORE_ADDR parent; + int priority; + char image [32]; + int image_len; /* This field is not always present in the ATCB. */ + CORE_ADDR call; + CORE_ADDR thread; + CORE_ADDR lwp; /* This field is not always present in the ATCB. */ +}; -#elif defined (sgi) || defined (__WIN32__) || defined (hpux) -#define THREAD_TO_PID(tid,lwpid) ((int)lwpid) +/* The index of certain important fields in the Ada Task Control Block + record and sub-records. */ +struct tcb_fieldnos +{ + /* Fields in record Ada_Task_Control_Block. */ + int common; + + /* Fields in record Common_ATCB. */ + int state; + int parent; + int priority; + int image; + int image_len; /* This field may be missing. */ + int call; + int ll; + + /* Fields in Task_Primitives.Private_Data. */ + int ll_thread; + int ll_lwp; /* This field may be missing. */ +}; + +#if defined (linux) +#define TASK_LWP(atcb) 0L #else -#define THREAD_TO_PID(tid,lwpid) (0) +#define TASK_LWP(atcb) extract_unsigned_integer (&(atcb).lwp, sizeof ((atcb).lwp)) #endif +struct task_ptid +{ + int pid; /* The Process id */ + long lwp; /* The Light Weight Process id */ + long tid; /* The Thread id */ +}; +typedef struct task_ptid task_ptid_t; + +struct task_entry +{ + CORE_ADDR task_id; + struct task_control_block atcb; + int task_num; + int known_tasks_index; + struct task_entry *next_task; + task_ptid_t task_ptid; + int stack_per; +}; + +/* FIXME: move all this conditional compilation in description + files or in configure.in */ + #if defined(__alpha__) && defined(__osf__) && !defined(VXWORKS_TARGET) +#define SPECIAL_THREAD_SUPPORT_ACTIVE() thread_support +#define SAVE_TASK_REGISTERS(task) \ + do { fill_gregset (&gregset_saved, -1); \ + fill_fpregset (&fpregset_saved, -1); \ + } while (0) +#define RESTORE_TASK_REGISTERS(task) \ + do { supply_gregset (&gregset_saved); \ + supply_fpregset (&fpregset_saved); \ + } while (0) + #define THREAD_FETCH_REGISTERS dec_thread_fetch_registers -#define GET_CURRENT_THREAD dec_thread_get_current_thread +#define GET_CURRENT_THREAD(PTID) dec_thread_get_current_thread () +extern unsigned long dec_thread_get_current_thread (void); extern int dec_thread_get_registers (gdb_gregset_t *, gdb_fpregset_t *); +extern int dec_thread_fetch_registers (void); #endif -#if defined (_AIX) -#define THREAD_FETCH_REGISTERS aix_thread_fetch_registers -#define GET_CURRENT_THREAD aix_thread_get_current_thread +#ifdef __fsu__ +#define SPECIAL_THREAD_SUPPORT_ACTIVE() \ + (thread_support && pthread_kern_addr != 0) +#define SAVE_TASK_REGISTERS(task) \ + do { \ + if (pthread_kern_addr != 0) \ + { \ + fill_gregset (&gregset_saved, -1); \ + fill_fpregset (&fpregset_saved, -1); \ + } \ + } while (0) +#define RESTORE_TASK_REGISTERS(task) \ + do { \ + if (pthread_kern_addr != 0) \ + { \ + supply_gregset (&gregset_saved); \ + supply_fpregset (&fpregset_saved); \ + } \ + } while (0) + +extern int fsu_thread_fetch_registers (void); +extern unsigned long fsu_thread_get_current_thread (void); +static int fsu_or_linux_thread_fetch_registers (void); +static long fsu_or_linux_thread_get_current_thread (ptid_t); +#define THREAD_FETCH_REGISTERS fsu_or_linux_thread_fetch_registers +#define GET_CURRENT_THREAD(PTID) fsu_or_linux_thread_get_current_thread (PTID) +#define PTHREAD_KERN "pthread_kern" +#endif + +#ifdef I386_GNULINUX_TARGET +extern td_thrinfo_t thread_db_pid_to_thread_info (int pid); +extern int thread_db_tid_to_pid (void *tid); #endif #if defined(VXWORKS_TARGET) -#define GET_CURRENT_THREAD() ((void*)inferior_pid) +#define GET_CURRENT_THREAD(PTID) (unsigned long) ptid_get_pid (PTID) #define THREAD_FETCH_REGISTERS() (-1) -#elif defined (sun) && defined (__SVR4) -#define GET_CURRENT_THREAD solaris_thread_get_current_thread +#elif defined (__WIN32__) || defined (__CYGWIN__) || defined (hpux) +#define GET_CURRENT_THREAD(PTID) ptid_get_pid (PTID) #define THREAD_FETCH_REGISTERS() (-1) -extern void *GET_CURRENT_THREAD (); +#endif -#elif defined (_AIX) || (defined(__alpha__) && defined(__osf__)) -extern void *GET_CURRENT_THREAD (); +#if defined (HAVE_SPYTHREAD) +#define GET_CURRENT_THREAD(PTID) (unsigned long) TIDGET (PTID) +#endif -#elif defined (__WIN32__) || defined (hpux) -#define GET_CURRENT_THREAD() (inferior_pid) -#define THREAD_FETCH_REGISTERS() (-1) +#if !defined(GET_CURRENT_THREAD) +#define GET_CURRENT_THREAD(PTID) (unsigned long) ptid_get_tid (PTID) +#endif -#else -#define GET_CURRENT_THREAD() (NULL) -#define THREAD_FETCH_REGISTERS() (-1) +#if !defined(THREAD_FETCH_REGISTERS) +#define THREAD_FETCH_REGISTERS() (target_fetch_registers (-1), 0) +#endif + +#if !defined(SAVE_TASK_REGISTERS) +#define SAVE_TASK_REGISTERS(task) +#define RESTORE_TASK_REGISTERS(task) +#endif + +#if !defined(SPECIAL_THREAD_SUPPORT_ACTIVE) +#define SPECIAL_THREAD_SUPPORT_ACTIVE() 0 #endif #define KNOWN_TASKS_NAME "system__tasking__debug__known_tasks" -#define READ_MEMORY(addr, var) read_memory (addr, (char*) &var, sizeof (var)) -/* external declarations */ +#define READ_MEMORY(addr, var) read_memory (addr, (char *) &var, sizeof (var)) + +/* If defined to 1, means that the thread ptids maintained by core GDB + follow this format : first field (pid) contains the tid + second field (lwp) contains 0 + third field (tid) contains 0 */ +#ifndef THREAD_PTID_CONTAINS_TID_NULL_NULL +#define THREAD_PTID_CONTAINS_TID_NULL_NULL (0) +#endif + +/* If defined to 1, means that the thread ptids maintained by core GDB + follow this format: first field (pid) contains the LWP id + second field (lwp) contains 0 + third field (tid) contains 0 */ +#ifndef THREAD_PTID_CONTAINS_LWP_NULL_NULL +#define THREAD_PTID_CONTAINS_LWP_NULL_NULL (0) +#endif + +/* If defined to 1, means that the thread ptids maintained by core GDB + follow this format: first field (pid) contains the PID + second field (lwp) contains 0 + third field (tid) contains the TID */ +#ifndef THREAD_PTID_CONTAINS_PID_NULL_TID +#define THREAD_PTID_CONTAINS_PID_NULL_TID (0) +#endif + +/* If defined to 1, means that the thread ptids maintained by core GDB + follow this format: first field (pid) contains the PID + second field (lwp) contains the TID + third field (tid) contains the 0 */ + +#ifndef THREAD_PTID_CONTAINS_PID_TID_NULL +#define THREAD_PTID_CONTAINS_PID_TID_NULL (0) +#endif + +/* If defined to 1, means that the thread id is not stored in the tid + field of the task_ptid, but rather in the lwp field. */ +#ifndef ADA_THREAD_ID_IN_LWP +#define ADA_THREAD_ID_IN_LWP (0) +#endif + +static int task_ptid_get_pid (task_ptid_t task_ptid); +static long task_ptid_get_lwp (task_ptid_t task_ptid); +static long task_ptid_get_tid (task_ptid_t task_ptid); +static task_ptid_t task_ptid_build (int pid, long lwp, long tid); +static ptid_t task_ptid_get_ptid (task_ptid_t task_ptid); +static long task_ptid_get_thread_id (task_ptid_t task_ptid); + +static int task_is_alive (enum task_states state); +static CORE_ADDR get_self_id (ptid_t); +static int get_entry_number (CORE_ADDR); +static void get_tcb_types_info (struct type **atcb_type, + struct type **atcb_common_type, + struct type **atcb_ll_type, + struct tcb_fieldnos *atcb_fieldnos); +static void get_tcb_call_type_info (struct type **atcb_call_type, + int *atcb_call_self_fieldno); +static CORE_ADDR get_known_tasks_addr (void); +static int read_known_tasks_array (void); +static int build_task_list (void); +static void value_as_string (char *dest, struct value *val, int length); +static struct task_control_block read_atcb (CORE_ADDR atcb_addr); +static CORE_ADDR read_caller (const CORE_ADDR call); +static void display_current_task_id (void); +static void task_command_1 (char *tidstr, int from_tty); + +/* Ada-tasks observers. */ + +static void normal_stop_notification (void); +static void ada_tasks_attach_observers (void); /* Global visible variables */ -struct task_entry *task_list = NULL; int ada__tasks_check_symbol_table = 1; -void *pthread_kern_addr = NULL; +CORE_ADDR pthread_kern_addr = 0; + +/* Local global variables. */ +static struct task_entry *task_list = NULL; -#if (defined(__alpha__) && defined(__osf__) && !defined(VXWORKS_TARGET)) +/* When non-zero, this flag indicates that the current task_list + is obsolete, and should be recomputed before it is accessed. */ +static int stale_task_list_p = 1; + +#if defined (__fsu__) || (defined(__alpha__) && defined(__osf__) && !defined(VXWORKS_TARGET)) gdb_gregset_t gregset_saved; gdb_fpregset_t fpregset_saved; #endif /* The maximum number of tasks known to the Ada runtime */ -const int MAX_NUMBER_OF_KNOWN_TASKS = 1000; +static const int MAX_NUMBER_OF_KNOWN_TASKS = 1000; + +/* the current task, as seen by the user. Modified everytime the user + does a task switch. */ +static int current_task = -1; -/* the current task */ -int current_task = -1, current_task_id = -1, current_task_index; -void *current_thread, *current_lwp; +unsigned long current_thread; -char *ada_task_states[] = { +/* The task where the debugger stopped, giving control back to the user. + Not affected by task switching. Used to restore the registers before + continuing the inferior. */ +int current_task_id = -1; + +static char *task_states[] = { "Unactivated", "Runnable", "Terminated", @@ -129,7 +330,7 @@ char *ada_task_states[] = { /* Global internal types */ -static char *ada_long_task_states[] = { +static char *long_task_states[] = { "Unactivated", "Runnable", "Terminated", @@ -150,11 +351,34 @@ static char *ada_long_task_states[] = { /* Global internal variables */ static int highest_task_num = 0; -int thread_support = 0; /* 1 if the thread library in use is supported */ -static int gdbtk_task_initialization = 0; +static int thread_support = 0; /* 1 if the thread library in use is + supported. FIXME: Not reinitialized + properly when program reloaded. + */ +#ifdef __fsu__ +static int +fsu_or_linux_thread_fetch_registers (void) +{ + if (pthread_kern_addr != 0) + return fsu_thread_fetch_registers (); + + target_fetch_registers (-1); + return 0L; +} + +static long +fsu_or_linux_thread_get_current_thread (ptid_t ptid) +{ + if (pthread_kern_addr != 0) + return fsu_thread_get_current_thread (); + + return ptid_get_tid (ptid); +} + +#endif /* __fsu__ */ static int -add_task_entry (void *p_task_id, int index) +add_task_entry (CORE_ADDR p_task_id, int index) { struct task_entry *new_task_entry = NULL; struct task_entry *pt; @@ -163,13 +387,18 @@ add_task_entry (void *p_task_id, int index) new_task_entry = xmalloc (sizeof (struct task_entry)); new_task_entry->task_num = highest_task_num; new_task_entry->task_id = p_task_id; + new_task_entry->atcb = read_atcb (p_task_id); new_task_entry->known_tasks_index = index; + new_task_entry->task_ptid = + task_ptid_build (ptid_get_pid (inferior_ptid), /* ? */ + TASK_LWP (new_task_entry->atcb), + new_task_entry->atcb.thread); new_task_entry->next_task = NULL; pt = task_list; if (pt) { while (pt->next_task) - pt = pt->next_task; + pt = pt->next_task; pt->next_task = new_task_entry; pt->stack_per = 0; } @@ -178,8 +407,8 @@ add_task_entry (void *p_task_id, int index) return new_task_entry->task_num; } -int -get_entry_number (void *p_task_id) +static int +get_entry_number (CORE_ADDR p_task_id) { struct task_entry *pt; @@ -187,22 +416,22 @@ get_entry_number (void *p_task_id) while (pt != NULL) { if (pt->task_id == p_task_id) - return pt->task_num; + return pt->task_num; pt = pt->next_task; } return 0; } static struct task_entry * -get_thread_entry_vptr (void *thread) +get_thread_entry_vptr (long thread) { struct task_entry *pt; pt = task_list; while (pt != NULL) { - if (pt->thread == thread) - return pt; + if (task_ptid_get_thread_id (pt->task_ptid) == thread) + return pt; pt = pt->next_task; } return 0; @@ -217,7 +446,7 @@ get_entry_vptr (int p_task_num) while (pt) { if (pt->task_num == p_task_num) - return pt; + return pt; pt = pt->next_task; } return NULL; @@ -228,6 +457,8 @@ init_task_list (void) { struct task_entry *pt, *old_pt; + target_find_new_threads (); + pt = task_list; while (pt) { @@ -245,64 +476,592 @@ valid_task_id (int task) return get_entry_vptr (task) != NULL; } -void * -get_self_id (void) +/* Return the pid of a given task ptid. */ + +static int +task_ptid_get_pid (task_ptid_t task_ptid) { - struct value *val; - void *self_id; - int result; + return task_ptid.pid; +} + +/* Return the lwp of a given task ptid. */ + +static long +task_ptid_get_lwp (task_ptid_t task_ptid) +{ + return task_ptid.lwp; +} + +/* Return the tid of a given task ptid. */ + +static long +task_ptid_get_tid (task_ptid_t task_ptid) +{ + return task_ptid.tid; +} + +/* Build a task ptid from the associated pid, lwp, and tid. */ + +static task_ptid_t +task_ptid_build (int pid, long lwp, long tid) +{ + task_ptid_t task_ptid; + + task_ptid.pid = pid; + task_ptid.lwp = lwp; + task_ptid.tid = tid; + return task_ptid; +} + +/* Translate a task ptid into a ptid (the ptid maintained by core GDB). + + On most platforms, they are equivalent, and this function can be + regarded as the identity. However, there are other platforms where + the task ptid and the ptid are not equivalent. For instance, the task + LWP value is sometimes stored by GDB-core as a pid! This translation + therefore becomes necessary before invoking the GDB thread services. */ + +static ptid_t +task_ptid_get_ptid (task_ptid_t task_ptid) +{ + ptid_t ptid; + + if (THREAD_PTID_CONTAINS_TID_NULL_NULL) + ptid = ptid_build (task_ptid_get_tid (task_ptid), 0, 0); + else if (THREAD_PTID_CONTAINS_LWP_NULL_NULL) + ptid = ptid_build (task_ptid_get_lwp (task_ptid), 0, 0); + else if (THREAD_PTID_CONTAINS_PID_NULL_TID) + ptid = ptid_build (task_ptid_get_pid (task_ptid), + 0, task_ptid_get_tid (task_ptid)); + else if (THREAD_PTID_CONTAINS_PID_TID_NULL) + ptid = ptid_build (task_ptid_get_pid (task_ptid), + task_ptid_get_tid (task_ptid), 0); + else + ptid = ptid_build (task_ptid_get_pid (task_ptid), + task_ptid_get_lwp (task_ptid), + task_ptid_get_tid (task_ptid)); + + return ptid; +} + +/* Extract and return the thread_id for the given TASK_PTID. */ + +static long +task_ptid_get_thread_id (task_ptid_t task_ptid) +{ + /* On most platforms, the thread_id is stored in task_ptid.tid. + Unfortunately, some other platforms store it as the task_ptid.lwp... */ + + if (ADA_THREAD_ID_IN_LWP) + return task_ptid_get_lwp (task_ptid); + else + return task_ptid_get_tid (task_ptid); +} + +/* Return non-zero iff the task STATE corresponds to a non-terminated + task state. */ + +static int +task_is_alive (enum task_states state) +{ + return (state != Terminated); +} + +static CORE_ADDR +get_self_id (ptid_t ptid) +{ +#ifdef GNAT_GDB struct task_entry *ent; - extern int do_not_insert_breakpoints; #if !((defined(sun) && defined(__SVR4)) || defined(VXWORKS_TARGET) || defined(__WIN32__)) if (thread_support) #endif { - ent = get_thread_entry_vptr (GET_CURRENT_THREAD ()); + ent = get_thread_entry_vptr (GET_CURRENT_THREAD (ptid)); return ent ? ent->task_id : 0; } +#endif /* FIXME: calling a function in the inferior with a multithreaded application - is not reliable, so return NULL if there is no safe way to get the current - task */ - return NULL; + is not reliable, so return a null address if there is no safe way to + get the current task */ + return 0; } int -get_current_task (void) +ada_get_current_task (ptid_t ptid) { int result; - /* FIXME: language_ada should be defined in defs.h */ - /* if (current_language->la_language != language_ada) return -1; */ + if (current_language->la_language != language_ada) + return -1; - result = get_entry_number (get_self_id ()); + result = get_entry_number (get_self_id (ptid)); /* return -1 if not found */ return result == 0 ? -1 : result; } +/* Get from the debugging information the type description of all types + related to the Ada Task Control Block that will be needed in order to + read the list of known tasks in the Ada runtime. Also return the + associated ATCB_FIELDNOS. + + Error handling: Any data missing from the debugging info will cause + an error to be raised, and none of the return values to be set. + Users of this function can depend on the fact that all or none of the + return values will be set. */ + +static void +get_tcb_types_info (struct type **atcb_type, + struct type **atcb_common_type, + struct type **atcb_ll_type, + struct tcb_fieldnos *atcb_fieldnos) +{ + struct type *type; + struct type *common_type; + struct type *ll_type; + struct tcb_fieldnos fieldnos; + +#ifndef ADA_RETAIN_DOTS + const char *atcb_name = "system__tasking__ada_task_control_block___XVE"; + const char *common_atcb_name = "system__tasking__common_atcb"; + const char *private_data_name = "system__task_primitives__private_data"; +#else + const char *atcb_name = "system.tasking.ada_task_control_block___XVE"; + const char *common_atcb_name = "system.tasking.common_atcb"; + const char *private_data_name = "system.task_primitives.private_data"; +#endif + + const struct symbol *atcb_sym = + lookup_symbol (atcb_name, NULL, VAR_DOMAIN, NULL, NULL); + const struct symbol *common_atcb_sym = + lookup_symbol (common_atcb_name, NULL, VAR_DOMAIN, NULL, NULL); + const struct symbol *private_data_sym = + lookup_symbol (private_data_name, NULL, VAR_DOMAIN, NULL, NULL); + + if (atcb_sym == NULL || atcb_sym->type == NULL) + error ("Can not find Ada_Task_Control_Block type. Aborting"); + if (common_atcb_sym == NULL || common_atcb_sym->type == NULL) + error ("Can not find Common_ATCB type. Aborting"); + if (private_data_sym == NULL || private_data_sym->type == NULL) + error ("Can not find Private_Data type. Aborting"); + + /* Get a static representation of the type record Ada_Task_Control_Block. */ + type = atcb_sym->type; + type = ada_template_to_fixed_record_type_1 (type, NULL, 0, NULL, 0); + + /* Get the type for Ada_Task_Control_Block.Common. */ + common_type = common_atcb_sym->type; + + /* Get the type for Ada_Task_Control_Bloc.Common.Call.LL. */ + ll_type = private_data_sym->type; + + /* Get the field indices. */ + fieldnos.common = ada_get_field_index (type, "common", 0); + fieldnos.state = ada_get_field_index (common_type, "state", 0); + fieldnos.parent = ada_get_field_index (common_type, "parent", 0); + fieldnos.priority = ada_get_field_index (common_type, "base_priority", 0); + fieldnos.image = ada_get_field_index (common_type, "task_image", 0); + fieldnos.image_len = ada_get_field_index (common_type, "task_image_len", 1); + fieldnos.call = ada_get_field_index (common_type, "call", 0); + fieldnos.ll = ada_get_field_index (common_type, "ll", 0); + fieldnos.ll_thread = ada_get_field_index (ll_type, "thread", 0); + fieldnos.ll_lwp = ada_get_field_index (ll_type, "lwp", 1); + + /* On certain platforms such as x86-windows, the "lwp" field has been + named "thread_id". This field will likely be renamed in the future, + but we need to support both possibilities to avoid an unnecessary + dependency on a recent compiler. We therefore try locating the + "thread_id" field in place of the "lwp" field if we did not find + the latter. */ + if (fieldnos.ll_lwp < 0) + fieldnos.ll_lwp = ada_get_field_index (ll_type, "thread_id", 1); + + /* Set all the out parameters all at once, now that we are certain + that there are no potential error() anymore. */ + *atcb_type = type; + *atcb_common_type = common_type; + *atcb_ll_type = ll_type; + *atcb_fieldnos = fieldnos; +} + +/* Get from the debugging information the type description of the + record type Entry_Call_Record (this is the type of the field + Call.all in the Common_ATCB record type). Also return the index + of the field "Self" in Entry_Call_Record. + + Error handling: Any data missing from the debugging info will cause + an error to be raised, and none of the return values to be set. + Users of this function can depend on the fact that all or none of the + return values will be set. */ + +static void +get_tcb_call_type_info (struct type **atcb_call_type, + int *atcb_call_self_fieldno) +{ + struct type *call_type; + int call_self_fieldno; + +#ifndef ADA_RETAIN_DOTS + const char *entry_call_record_name = "system__tasking__entry_call_record"; +#else + const char *entry_call_record_name = "system.tasking.entry_call_record"; +#endif + + const struct symbol *entry_call_record_sym = + lookup_symbol (entry_call_record_name, NULL, VAR_DOMAIN, NULL, NULL); + + if (entry_call_record_sym == NULL || entry_call_record_sym->type == NULL) + error ("Can not find Entry_Call_Record type. Aborting"); + + call_type = entry_call_record_sym->type; + call_self_fieldno = ada_get_field_index (call_type, "self", 0); + + /* Set all the out parameters all at once, now that we are certain + that there are no potential error() anymore. */ + *atcb_call_type = call_type; + *atcb_call_self_fieldno = call_self_fieldno; +} + +/* Return the address of the Known_Tasks array maintained in + the Ada Runtime. Return NULL if the array could not be found, + meaning that the inferior program probably does not use tasking. + + In order to provide a fast response time, this function caches + the Known_Tasks array address after the lookup during the first + call. Subsequent calls will simply return this cached address. */ + +static CORE_ADDR +get_known_tasks_addr (void) +{ + static CORE_ADDR known_tasks_addr = 0; + + if (ada__tasks_check_symbol_table) + { + struct symbol *sym; + struct minimal_symbol *msym; + + thread_support = 0; +#if (defined(__alpha__) && defined(__osf__) & !defined(VXWORKS_TARGET)) \ + || defined (_AIX) || defined (__CYGWIN__) + thread_support = 1; +#elif defined (__fsu__) + msym = lookup_minimal_symbol (PTHREAD_KERN, NULL, NULL); + if (msym != NULL) + { + pthread_kern_addr = SYMBOL_VALUE_ADDRESS (msym); + thread_support = 1; + } +#elif defined (HAVE_SPYTHREAD) + thread_support = libspy_enabled; +#endif + +#ifdef I386_GNULINUX_TARGET + /* We support threads via the Linux Threads... */ + thread_support = 1; +#endif + + msym = lookup_minimal_symbol (KNOWN_TASKS_NAME, NULL, NULL); + if (msym != NULL) + known_tasks_addr = SYMBOL_VALUE_ADDRESS (msym); + else +#ifndef VXWORKS_TARGET + return 0; +#else + { + if (target_lookup_symbol (KNOWN_TASKS_NAME, &known_tasks_addr) != 0) + return 0; + } +#endif + + /* FIXME: brobecker 2003-03-05: Here would be a much better place + to attach the ada-tasks observers, instead of doing this + unconditionaly in _initialize_tasks. This would avoid an + unecessary notification when the inferior does not use tasking + or as long as the user does not use the ada-tasks commands. + Unfortunately, this is not possible for the moment: the current + code resets ada__tasks_check_symbol_table back to 1 whenever + symbols for a new program are being loaded. If we place the + observers intialization here, we will end up adding new observers + everytime we do the check for Ada tasking-related symbols + above. This would currently have benign effects, but is still + undesirable. The cleanest approach is probably to create a new + observer to notify us when the user is debugging a new program. + We would then reset ada__tasks_check_symbol_table back to 1 + during the notification, but also detach all observers. + BTW: observers are probably not reentrant, so detaching during + a notification may not be the safest thing to do... Sigh... + But creating the new observer would be a good idea in any case, + since this allow us to make ada__tasks_check_symbol_table + static, which is a good bonus. */ + ada__tasks_check_symbol_table = 0; + } + + return known_tasks_addr; +} + +/* Read the Known_Tasks array from the inferior memory, and store + it in task_list. Return non-zero upon success. */ + +static int +read_known_tasks_array (void) +{ + const int target_ptr_byte = TARGET_PTR_BIT / TARGET_CHAR_BIT; + const int temp_tasks_size = target_ptr_byte * MAX_NUMBER_OF_KNOWN_TASKS; + const CORE_ADDR known_tasks_addr = get_known_tasks_addr (); + char *temp_tasks = (char *) alloca (temp_tasks_size); + CORE_ADDR temp_task; + int i; + + /* Step 1: Clear the current list, if any. */ + init_task_list (); + + /* If the application does not use task, then no more needs to be done. + It is important to have the task list cleared (see above) before we + return, as we don't want a stale task list to be used... This can + happen for instance when debugging a non-multitasking program after + having debugged a multitasking one. */ + if (known_tasks_addr == 0) + return 0; + + /* Step 2: Build a new list by reading the ATCBs from the Known_Tasks + array in the Ada runtime. */ + read_memory (known_tasks_addr, temp_tasks, temp_tasks_size); + for (i = 0; i < MAX_NUMBER_OF_KNOWN_TASKS; i++) + { + temp_task = extract_typed_address (temp_tasks + i * target_ptr_byte, + builtin_type_void_data_ptr); + + if (temp_task != 0) + { + if (get_entry_number (temp_task) == 0) + add_task_entry (temp_task, i); + } + } + + /* Step 3: Unset stale_task_list_p, to avoid re-reading the Known_Tasks + array unless needed. Then report a success. */ + stale_task_list_p = 0; + return 1; +} + +/* Builds the task_list by reading the Known_Tasks array from + the inferior. Prints an appropriate message and returns non-zero + if it failed to build this list. */ + +static int +build_task_list (void) +{ + if (!target_has_stack) + error ("No stack"); + + if (stale_task_list_p) + read_known_tasks_array (); + + if (task_list == NULL) + { + printf_filtered ("Your application does not use any Ada task.\n"); + return 0; + } + + return 1; +} + +/* Extract the contents of the value as a string whose length is LENGTH, + and store the result in DEST. */ + +static void +value_as_string (char *dest, struct value *val, int length) +{ + memcpy (dest, VALUE_CONTENTS (val), length); +} + +/* Extract the string image from the fat string corresponding to VAL, + and store it in DEST. The length of the string is stored in LEN. If + the string length is greater than MAX_LEN, then truncate the result + to the first MAX_LEN characters of the fat string. */ + +static void +read_fat_string_value (char *dest, int *len, struct value *val, int max_len) +{ + struct value *array_val; + struct value *bounds_val; + + /* The following variables are made static to avoid recomputing them + each time this function is called. */ + static int initialize_fieldnos = 1; + static int array_fieldno; + static int bounds_fieldno; + static int upper_bound_fieldno; + + /* Get the index of the fields that we will need to read in order + to extract the string from the fat string. */ + if (initialize_fieldnos) + { + struct type *type = VALUE_TYPE (val); + struct type *bounds_type; + + array_fieldno = ada_get_field_index (type, "P_ARRAY", 0); + bounds_fieldno = ada_get_field_index (type, "P_BOUNDS", 0); + + bounds_type = TYPE_FIELD_TYPE (type, bounds_fieldno); + if (TYPE_CODE (bounds_type) == TYPE_CODE_PTR) + bounds_type = TYPE_TARGET_TYPE (bounds_type); + if (TYPE_CODE (bounds_type) != TYPE_CODE_STRUCT) + error ("Unknown task name format. Aborting"); + upper_bound_fieldno = ada_get_field_index (bounds_type, "UB0", 0); + + initialize_fieldnos = 0; + } + + /* Get the size of the task image by checking the value of the bounds. + The lower bound is always 1, so we only need to read the upper bound. */ + bounds_val = value_ind (value_field (val, bounds_fieldno)); + *len = value_as_long (value_field (bounds_val, upper_bound_fieldno)); + + /* Make sure that we do not read more than max_len characters... */ + if (*len > max_len) + *len = max_len; + + /* Extract LEN characters from the fat string. */ + array_val = value_ind (value_field (val, array_fieldno)); + read_memory (VALUE_ADDRESS (array_val), dest, *len); +} + +/* Read the ATCB stored at ATCB_ADDR from the inferior memory. */ + +static struct task_control_block +read_atcb (CORE_ADDR atcb_addr) +{ + /* The type description for the ATCB record and subrecords, and + the associated tcb_fieldnos. For efficiency reasons, these are made + static so that we can compute them only once the first time and + reuse them later. */ + static struct type *atcb_type = NULL; + static struct type *atcb_common_type = NULL; + static struct type *atcb_ll_type = NULL; + static struct tcb_fieldnos fieldno; + + struct task_control_block result; + struct value *tcb_value; + struct value *ll_value; + + if (atcb_type == NULL) + get_tcb_types_info (&atcb_type, &atcb_common_type, &atcb_ll_type, &fieldno); + + tcb_value = value_from_contents_and_address (atcb_type, NULL, atcb_addr); + tcb_value = value_field (tcb_value, fieldno.common); + + result.state = value_as_long (value_field (tcb_value, fieldno.state)); + result.parent = value_as_address (value_field (tcb_value, fieldno.parent)); + result.priority = value_as_long (value_field (tcb_value, fieldno.priority)); + + /* Depending on the GNAT version used, the task image is either a fat + string, or a thin array of characters. Older versions of GNAT used + to use fat strings, and therefore did not need an extra field in + the ATCB to store the string length. For efficiency reasons, newer + versions of GNAT replaced the fat string by a static buffer, but this + also required the addition of a new field named "Image_Len" containing + the length of the task name. The method used to extract the task name + is selected depending on the existence of this field. */ + if (fieldno.image_len == -1) + { + read_fat_string_value (result.image, &result.image_len, + value_field (tcb_value, fieldno.image), + sizeof (result.image)); + } + else + { + value_as_string (result.image, value_field (tcb_value, fieldno.image), + sizeof (result.image)); + result.image_len = + value_as_long (value_field (tcb_value, fieldno.image_len)); + } + + result.call = value_as_address (value_field (tcb_value, fieldno.call)); + + ll_value = value_field (tcb_value, fieldno.ll); + result.thread = value_as_address (value_field (ll_value, fieldno.ll_thread)); + if (fieldno.ll_lwp >= 0) + result.lwp = value_as_address (value_field (ll_value, fieldno.ll_lwp)); + else + result.lwp = 0; + + return result; +} + +/* Read the ID of the task with which a task is attempting a rendez-vous + from the address of its Entry_Call_Record in the Ada TCB. + If the address of the Entry_Call_Record is null, then return null. */ + +static CORE_ADDR +read_caller (const CORE_ADDR call) +{ + /* The type description for the Entry_Call_Record, and the index of + the field "Self". For efficiency reasons, these are made static + so that we can compute them only once the first time and reuse them + later. */ + static struct type *atcb_call_type; + static int self_fieldno = -1; + + struct value *call_value; + + if (call == 0) + return 0; + + if (atcb_call_type == NULL) + get_tcb_call_type_info (&atcb_call_type, &self_fieldno); + + call_value = value_from_contents_and_address (atcb_call_type, NULL, call); + return value_as_address (value_field (call_value, self_fieldno)); +} + +#if 0 +/* FIXME: Now modified and back in breakpoint.c */ +/* breakpoint_task_match (PC) returns true if the breakpoint at PC + is valid for current task. */ + +int +breakpoint_task_match (CORE_ADDR pc) +{ + const int this_task = get_current_task (); + const struct breakpoint *breakpoints = get_breakpoint_chain (); + const struct breakpoint *b; + + for (b = breakpoints; b; b = b->next) + { + if (b->enable_state != bp_disabled + && b->enable_state != bp_shlib_disabled + && (b->address == 0 || b->address == pc) + && (b->task == 0 || b->task == this_task)) + { + return 1; + } + } + + return 0; +} +#endif + /* Print detailed information about specified task */ static void info_task (char *arg, int from_tty) { - void *temp_task; +#ifdef GNAT_GDB struct task_entry *pt, *pt2; - void *self_id, *caller; - struct task_fields atcb, atcb2; - struct entry_call call; - int bounds[2]; - char image[256]; + CORE_ADDR caller; int num; - /* FIXME: language_ada should be defined in defs.h */ - /* if (current_language->la_language != language_ada) - { - printf_filtered ("The current language does not support tasks.\n"); - return; - } - */ + if (current_language->la_language != language_ada) + { + printf_filtered ("The current language does not support tasks.\n"); + return; + } + + target_find_new_threads (); + pt = get_entry_vptr (atoi (arg)); if (pt == NULL) { @@ -310,59 +1069,44 @@ info_task (char *arg, int from_tty) return; } - temp_task = pt->task_id; - - /* read the atcb in the inferior */ - READ_MEMORY ((CORE_ADDR) temp_task, atcb); - /* print the Ada task id */ - printf_filtered ("Ada Task: %p\n", temp_task); + printf_filtered ("Ada Task: %s\n", paddr_nz (pt->task_id)); /* print the name of the task */ - if (atcb.image.P_ARRAY != NULL) - { - READ_MEMORY ((CORE_ADDR) EXTRACT_ADDRESS (atcb.image.P_BOUNDS), bounds); - bounds[1] = EXTRACT_INT (bounds[1]); - read_memory ((CORE_ADDR) EXTRACT_ADDRESS (atcb.image.P_ARRAY), - (char *) &image, bounds[1]); - printf_filtered ("Name: %.*s\n", bounds[1], image); - } + if (pt->atcb.image_len != 0) + printf_filtered ("Name: %.*s\n", pt->atcb.image_len, pt->atcb.image); else printf_filtered ("<no name>\n"); /* print the thread id */ - if ((long) pt->thread < 65536) - printf_filtered ("Thread: %ld\n", (long int) pt->thread); + if (task_ptid_get_tid (pt->task_ptid) < 65536) + printf_filtered + ("Thread: %ld\n", (long int) task_ptid_get_tid (pt->task_ptid)); else - printf_filtered ("Thread: %p\n", pt->thread); + printf_filtered + ("Thread: %#lx\n", (long int) task_ptid_get_tid (pt->task_ptid)); - if ((long) pt->lwp != 0) + if (task_ptid_get_lwp (pt->task_ptid) != 0) { - if ((long) pt->lwp < 65536) - printf_filtered ("LWP: %ld\n", (long int) pt->lwp); + if ((long) task_ptid_get_lwp (pt->task_ptid) < 65536) + printf_filtered + ("LWP: %ld\n", (long int) task_ptid_get_lwp (pt->task_ptid)); else - printf_filtered ("LWP: %p\n", pt->lwp); + printf_filtered + ("LWP: %#lx\n", (long int) task_ptid_get_lwp (pt->task_ptid)); } /* print the parent gdb task id */ - num = get_entry_number (EXTRACT_ADDRESS (atcb.parent)); + num = get_entry_number (pt->atcb.parent); if (num != 0) { printf_filtered ("Parent: %d", num); pt2 = get_entry_vptr (num); - READ_MEMORY ((CORE_ADDR) pt2->task_id, atcb2); /* print the name of the task */ - if (atcb2.image.P_ARRAY != NULL) - { - READ_MEMORY ((CORE_ADDR) EXTRACT_ADDRESS (atcb2.image.P_BOUNDS), - bounds); - bounds[1] = EXTRACT_INT (bounds[1]); - read_memory ((CORE_ADDR) EXTRACT_ADDRESS (atcb2.image.P_ARRAY), - (char *) &image, bounds[1]); - printf_filtered (" (%.*s)\n", bounds[1], image); - } + if (pt2->atcb.image_len != 0) + printf_filtered (" (%.*s)\n", pt2->atcb.image_len, pt2->atcb.image); else printf_filtered ("\n"); } @@ -370,20 +1114,13 @@ info_task (char *arg, int from_tty) printf_filtered ("No parent\n"); /* print the base priority of the task */ - printf_filtered ("Base Priority: %d\n", EXTRACT_INT (atcb.priority)); + printf_filtered ("Base Priority: %d\n", pt->atcb.priority); /* print the current state of the task */ /* check if this task is accepting a rendezvous */ - if (atcb.call == NULL) - caller = NULL; - else - { - READ_MEMORY ((CORE_ADDR) EXTRACT_ADDRESS (atcb.call), call); - caller = EXTRACT_ADDRESS (call.self); - } - - if (caller != NULL) + caller = read_caller (pt->atcb.call); + if (caller != 0) { num = get_entry_number (caller); printf_filtered ("Accepting rendezvous with %d", num); @@ -391,164 +1128,46 @@ info_task (char *arg, int from_tty) if (num != 0) { pt2 = get_entry_vptr (num); - READ_MEMORY ((CORE_ADDR) pt2->task_id, atcb2); /* print the name of the task */ - if (atcb2.image.P_ARRAY != NULL) - { - READ_MEMORY ((CORE_ADDR) EXTRACT_ADDRESS (atcb2.image.P_BOUNDS), - bounds); - bounds[1] = EXTRACT_INT (bounds[1]); - read_memory ((CORE_ADDR) EXTRACT_ADDRESS (atcb2.image.P_ARRAY), - (char *) &image, bounds[1]); - printf_filtered (" (%.*s)\n", bounds[1], image); - } + if (pt2->atcb.image_len != 0) { + printf_filtered (" (%.*s)\n", pt2->atcb.image_len, pt2->atcb.image); + } else printf_filtered ("\n"); } else - printf_filtered ("\n"); + printf_filtered ("\n"); } else - printf_filtered ("State: %s\n", ada_long_task_states[atcb.state]); -} - -#if 0 - -/* A useful function that shows the alignment of all the fields in the - tasks_fields structure - */ - -print_align (void) -{ - struct task_fields tf; - void *tf_base = &(tf); - void *tf_state = &(tf.state); - void *tf_entry_num = &(tf.entry_num); - void *tf_parent = &(tf.parent); - void *tf_priority = &(tf.priority); - void *tf_current_priority = &(tf.current_priority); - void *tf_image = &(tf.image); - void *tf_call = &(tf.call); - void *tf_thread = &(tf.thread); - void *tf_lwp = &(tf.lwp); - printf_filtered ("\n"); - printf_filtered ("(tf_base = 0x%x)\n", tf_base); - printf_filtered ("task_fields.entry_num at %3d (0x%x)\n", - tf_entry_num - tf_base, tf_entry_num); - printf_filtered ("task_fields.state at %3d (0x%x)\n", - tf_state - tf_base, tf_state); - printf_filtered ("task_fields.parent at %3d (0x%x)\n", - tf_parent - tf_base, tf_parent); - printf_filtered ("task_fields.priority at %3d (0x%x)\n", - tf_priority - tf_base, tf_priority); - printf_filtered ("task_fields.current_priority at %3d (0x%x)\n", - tf_current_priority - tf_base, tf_current_priority); - printf_filtered ("task_fields.image at %3d (0x%x)\n", - tf_image - tf_base, tf_image); - printf_filtered ("task_fields.call at %3d (0x%x)\n", - tf_call - tf_base, tf_call); - printf_filtered ("task_fields.thread at %3d (0x%x)\n", - tf_thread - tf_base, tf_thread); - printf_filtered ("task_fields.lwp at %3d (0x%x)\n", - tf_lwp - tf_base, tf_lwp); - printf_filtered ("\n"); -} + printf_filtered ("State: %s\n", long_task_states[pt->atcb.state]); #endif +} /* Print information about currently known tasks */ static void info_tasks (char *arg, int from_tty) { - struct value *val; - int i, task_number, state; - void *temp_task, *temp_tasks[MAX_NUMBER_OF_KNOWN_TASKS]; +#ifdef GNAT_GDB struct task_entry *pt; - void *self_id, *caller, *thread_id = NULL; - struct task_fields atcb; - struct entry_call call; - int bounds[2]; - char image[256]; + CORE_ADDR caller; + long thread_id = 0L; int size; char car; + ptid_t current_ptid; #if defined(__alpha__) && defined(__osf__) && !defined(VXWORKS_TARGET) pthreadTeb_t thr; gdb_gregset_t regs; #endif - static struct symbol *sym; - static struct minimal_symbol *msym; - static void *known_tasks_addr = NULL; - - int init_only = gdbtk_task_initialization; - gdbtk_task_initialization = 0; - - task_number = 0; - - if (PIDGET (inferior_ptid) == 0) - { - printf_filtered ("The program is not being run under gdb. "); - printf_filtered ("Use 'run' or 'attach' first.\n"); - return; - } - - if (ada__tasks_check_symbol_table) - { - thread_support = 0; -#if (defined(__alpha__) && defined(__osf__) & !defined(VXWORKS_TARGET)) || \ - defined (_AIX) - thread_support = 1; -#endif - - msym = lookup_minimal_symbol (KNOWN_TASKS_NAME, NULL, NULL); - if (msym != NULL) - known_tasks_addr = (void *) SYMBOL_VALUE_ADDRESS (msym); - else -#ifndef VXWORKS_TARGET - return; -#else - { - if (target_lookup_symbol (KNOWN_TASKS_NAME, &known_tasks_addr) != 0) - return; - } -#endif - - ada__tasks_check_symbol_table = 0; - } - - if (known_tasks_addr == NULL) - return; + current_ptid = inferior_ptid; #if !((defined(sun) && defined(__SVR4)) || defined(VXWORKS_TARGET) || defined(__WIN32__) || defined (hpux)) if (thread_support) #endif - thread_id = GET_CURRENT_THREAD (); - - /* then we get a list of tasks created */ - - init_task_list (); - - READ_MEMORY ((CORE_ADDR) known_tasks_addr, temp_tasks); - - for (i = 0; i < MAX_NUMBER_OF_KNOWN_TASKS; i++) - { - temp_task = EXTRACT_ADDRESS (temp_tasks[i]); - - if (temp_task != NULL) - { - task_number = get_entry_number (temp_task); - if (task_number == 0) - task_number = add_task_entry (temp_task, i); - } - } - - /* Return without printing anything if this function was called in - order to init GDBTK tasking. */ - - if (init_only) - return; + thread_id = GET_CURRENT_THREAD (inferior_ptid); /* print the header */ @@ -563,255 +1182,301 @@ info_tasks (char *arg, int from_tty) pt = task_list; while (pt) { - temp_task = pt->task_id; - - /* read the atcb in the inferior */ - READ_MEMORY ((CORE_ADDR) temp_task, atcb); - - /* store the thread id for future use */ - pt->thread = EXTRACT_ADDRESS (atcb.thread); - -#if defined (linux) - pt->lwp = (void *) THREAD_TO_PID (atcb.thread, 0); -#else - pt->lwp = EXTRACT_ADDRESS (atcb.lwp); -#endif - /* print a star if this task is the current one */ if (thread_id) #if defined (__WIN32__) || defined (SGI) || defined (hpux) - printf_filtered (pt->lwp == thread_id ? "*" : " "); + printf_filtered + (task_ptid_get_lwp (pt->task_ptid) == thread_id ? "*" : " "); #else - printf_filtered (pt->thread == thread_id ? "*" : " "); + printf_filtered + (task_ptid_get_thread_id (pt->task_ptid) == thread_id ? "*" : " "); #endif /* print the gdb task id */ printf_filtered ("%3d", pt->task_num); /* print the Ada task id */ -#ifndef VXWORKS_TARGET - printf_filtered (" %9lx", (long) temp_task); -#else -#ifdef TARGET_64 - printf_filtered (" %#9lx", (unsigned long) pt->thread & 0x3ffffffffff); -#else - printf_filtered (" %#9lx", (long) pt->thread); -#endif -#endif + printf_filtered (" %9lx", (long) pt->task_id); /* print the parent gdb task id */ - printf_filtered - (" %4d", get_entry_number (EXTRACT_ADDRESS (atcb.parent))); + printf_filtered (" %4d", get_entry_number (pt->atcb.parent)); /* print the base priority of the task */ - printf_filtered (" %3d", EXTRACT_INT (atcb.priority)); + printf_filtered (" %3d", pt->atcb.priority); #if defined(__alpha__) && defined(__osf__) && !defined(VXWORKS_TARGET) - if (pt->task_num == 1 || atcb.state == Terminated) - { - printf_filtered (" Unknown"); - goto next; - } - - read_memory ((CORE_ADDR) atcb.thread, &thr, sizeof (thr)); - current_thread = atcb.thread; + if (pt->task_num == 1 || pt->atcb.state == Terminated) + { + printf_filtered (" Unknown"); + goto next; + } + + READ_MEMORY (pt->atcb.thread, thr); + switch_to_thread (task_ptid_get_ptid (pt->task_ptid)); + /* ??? Brobecker 2003-03-13: Not sure what the next line is used for. + And even if useful, it should probably be replaced by call to + task_ptid_get_thread_id. */ + current_thread = task_ptid_get_tid (pt->task_ptid); regs.regs[SP_REGNUM] = 0; if (dec_thread_get_registers (®s, NULL) == 0) - { - pt->stack_per = (100 * ((long) thr.__stack_base - - regs.regs[SP_REGNUM])) / thr.__stack_size; - /* if the thread is terminated but still there, the - stack_base/size values are erroneous. Try to patch it */ - if (pt->stack_per < 0 || pt->stack_per > 100) - pt->stack_per = 0; - } + { + pt->stack_per = (100 * ((long) thr.__stack_base - + regs.regs[SP_REGNUM])) / thr.__stack_size; + /* if the thread is terminated but still there, the + stack_base/size values are erroneous. Try to patch it */ + if (pt->stack_per < 0 || pt->stack_per > 100) + pt->stack_per = 0; + } + else + { + /* Set stack_per to an invalid value to signal that we did not + manage to compute its value. */ + pt->stack_per = -1; + } /* print information about stack space used in the thread */ if (thr.__stack_size < 1024 * 1024) - { - size = thr.__stack_size / 1024; - car = 'K'; - } + { + size = thr.__stack_size / 1024; + car = 'K'; + } else if (thr.__stack_size < 1024 * 1024 * 1024) - { - size = thr.__stack_size / 1024 / 1024; - car = 'M'; - } - else /* Who knows... */ - { - size = thr.__stack_size / 1024 / 1024 / 1024; - car = 'G'; - } - printf_filtered (" %4d%c %2d", size, car, pt->stack_per); + { + size = thr.__stack_size / 1024 / 1024; + car = 'M'; + } + else /* Who knows... */ + { + size = thr.__stack_size / 1024 / 1024 / 1024; + car = 'G'; + } + + /* print the stack usage in percent, if available. */ + if (pt->stack_per != -1) + printf_filtered (" %4d%c %2d", size, car, pt->stack_per); + else + { + /* This error is not serious enough that we should raise + an internal error, but print '???' to make it unambiguous + that we failed to compute this value. */ + printf_filtered (" ???"); + } + next: #endif /* print the current state of the task */ /* check if this task is accepting a rendezvous */ - if (atcb.call == NULL) - caller = NULL; - else - { - READ_MEMORY ((CORE_ADDR) EXTRACT_ADDRESS (atcb.call), call); - caller = EXTRACT_ADDRESS (call.self); - } - - if (caller != NULL) - printf_filtered (" Accepting RV with %-4d", - get_entry_number (caller)); + caller = read_caller (pt->atcb.call); + if (caller != 0) + printf_filtered (" Accepting RV with %-4d", + get_entry_number (caller)); else - { - state = atcb.state; + { #if defined (__WIN32__) || defined (SGI) || defined (hpux) - if (state == Runnable && (thread_id && pt->lwp == thread_id)) + if (pt->atcb.state == Runnable + && (thread_id + && task_ptid_get_lwp (pt->task_ptid) == thread_id)) #else - if (state == Runnable && (thread_id && pt->thread == thread_id)) + if (pt->atcb.state == Runnable + && (thread_id + && task_ptid_get_thread_id (pt->task_ptid) == thread_id)) #endif - /* Replace "Runnable" by "Running" if this is the current task */ - printf_filtered (" %-22s", "Running"); - else - printf_filtered (" %-22s", ada_task_states[state]); - } + /* Replace "Runnable" by "Running" if this is the current task */ + printf_filtered (" %-22s", "Running"); + else + printf_filtered (" %-22s", task_states[pt->atcb.state]); + } /* finally, print the name of the task */ - if (atcb.image.P_ARRAY != NULL) - { - READ_MEMORY ((CORE_ADDR) EXTRACT_ADDRESS (atcb.image.P_BOUNDS), - bounds); - bounds[1] = EXTRACT_INT (bounds[1]); - read_memory ((CORE_ADDR) EXTRACT_ADDRESS (atcb.image.P_ARRAY), - (char *) &image, bounds[1]); - printf_filtered (" %.*s\n", bounds[1], image); - } + if (pt->atcb.image_len != 0) { + printf_filtered (" %.*s\n", pt->atcb.image_len, pt->atcb.image); + } else printf_filtered (" <no name>\n"); pt = pt->next_task; } -} - -/* Task list initialization for GDB-Tk. We basically use info_tasks() - to initialize our variables, but abort that function before we - actually print anything. */ - -int -gdbtk_tcl_tasks_initialize (void) -{ - gdbtk_task_initialization = 1; - info_tasks ("", gdb_stdout); - - return (task_list != NULL); + if (!ptid_equal (inferior_ptid, current_ptid)) + switch_to_thread (current_ptid); +#endif } static void info_tasks_command (char *arg, int from_tty) { + const int task_list_built = build_task_list (); + + if (!task_list_built) + return; + if (arg == NULL || *arg == '\000') info_tasks (arg, from_tty); else info_task (arg, from_tty); } -/* Switch from one thread to another. */ +/* Switch to task indicated by NEW_TASK. Return 0 iff successful. */ -static void -switch_to_thread (ptid_t ptid) +static int +switch_to_task (struct task_entry *new_task) { - if (ptid_equal (ptid, inferior_ptid)) - return; +#ifdef GNAT_GDB + /* Raise an error if task-switching is currently not allowed. */ + if (!THREAD_SWITCH_ALLOWED ()) + error ("Task switching is currently not allowed."); - inferior_ptid = ptid; - flush_cached_frames (); - registers_changed (); - stop_pc = read_pc (); - select_frame (get_current_frame ()); -} + if (!task_is_alive (new_task->atcb.state)) + error ("Can not switch to task %d: Task is no longer running", + new_task->task_num); -/* Switch to a specified task. */ + current_task = new_task->task_num; + current_thread = task_ptid_get_thread_id (new_task->task_ptid); -static int -task_switch (void *tid, void *lwpid) -{ - int res = 0, pid; + if (current_task_id == -1) + { + SAVE_TASK_REGISTERS (new_task); + current_task_id = ada_get_current_task (inferior_ptid); + } - if (thread_support) + if (SPECIAL_THREAD_SUPPORT_ACTIVE ()) { + /* FIXME: Integrate with switch_to_thread */ + int ret_code; flush_cached_frames (); - - if (current_task != current_task_id) - { - res = THREAD_FETCH_REGISTERS (); - } + registers_changed (); + if (current_task == current_task_id) + { + RESTORE_TASK_REGISTERS (new_task); + ret_code = 0; + } else - { -#if (defined(__alpha__) && defined(__osf__) && !defined(VXWORKS_TARGET)) - supply_gregset (&gregset_saved); - supply_fpregset (&fpregset_saved); -#endif - } - - if (res == 0) - stop_pc = read_pc (); + ret_code = THREAD_FETCH_REGISTERS (); + if (ret_code == 0) + stop_pc = read_pc (); select_frame (get_current_frame ()); - return res; + return ret_code; } - + else if (task_ptid_get_pid (new_task->task_ptid) != 0) /* ?? */ + { + switch_to_thread (task_ptid_get_ptid (new_task->task_ptid)); + return 0; + } +#endif return -1; } +/* Print a message telling the user id of the current task. + Print an error message if the application does not appear to + be using any Ada task. */ + static void -task_command (char *tidstr, int from_tty) +display_current_task_id (void) { - int num; - struct task_entry *e; + const int current_task = ada_get_current_task (inferior_ptid); - if (!tidstr) - error ("Please specify a task ID. Use the \"info tasks\" command to\n" - "see the IDs of currently known tasks."); + if (current_task == -1) + printf_filtered ("[Current task is unknown]\n"); + else + printf_filtered ("[Current task is %d]\n", current_task); +} + +/* Parse and evaluate TIDSTR into a task id, and try to switch to + that task. Print an error message if the task switch failed. */ - num = atoi (tidstr); - e = get_entry_vptr (num); +static void +task_command_1 (char *tidstr, int from_tty) +{ + const int num = value_as_long (parse_and_eval (tidstr)); + struct task_entry *e = get_entry_vptr (num); if (e == NULL) error ("Task ID %d not known. Use the \"info tasks\" command to\n" - "see the IDs of currently known tasks.", num); + "see the IDs of currently known tasks", num); - if (current_task_id == -1) + if (switch_to_task (e) == 0) { -#if (defined(__alpha__) && defined(__osf__) && !defined(VXWORKS_TARGET)) - fill_gregset (&gregset_saved, -1); - fill_fpregset (&fpregset_saved, -1); -#endif - current_task_id = get_current_task (); - } - - current_task = num; - current_task_index = e->known_tasks_index; - current_thread = e->thread; - current_lwp = e->lwp; - if (task_switch (e->thread, e->lwp) == 0) - { - /* FIXME: find_printable_frame should be defined in frame.h, and - implemented in ada-lang.c */ + ada_find_printable_frame (get_selected_frame ()); printf_filtered ("[Switching to task %d]\n", num); - print_stack_frame (get_selected_frame (), 1, SRC_AND_LOC); + print_stack_frame (get_selected_frame (), + frame_relative_level (get_selected_frame ()), 1); } else printf_filtered ("Unable to switch to task %d\n", num); } +/* Switch to task indicated in TIDSTR. Simply print the current task + if TIDSTR is empty or NULL. */ + +static void +task_command (char *tidstr, int from_tty) +{ + const int task_list_built = build_task_list (); + + if (!task_list_built) + return; + + if (tidstr == NULL || tidstr[0] == '\0') + display_current_task_id (); + else + task_command_1 (tidstr, from_tty); +} + +#if defined (__fsu__) || (defined(__alpha__) && defined(__osf__) && !defined(VXWORKS_TARGET)) +/* Restore saved registers if there was a task switch. */ +void +ada_reset_thread_registers (void) +{ + if (current_task_id != -1 && SPECIAL_THREAD_SUPPORT_ACTIVE ()) + { + supply_gregset (&gregset_saved); + supply_fpregset (&fpregset_saved); + reinit_frame_cache (); + stop_pc = read_pc (); + } + current_task_id = -1; +} +#else +void +ada_reset_thread_registers (void) +{ +} +#endif + +/* The 'normal_stop' observer notification callback. */ + +static void +normal_stop_notification (void) +{ + /* The inferior has been resumed, and just stopped. This means that + our task_list needs to be recomputed before it can be used again. */ + stale_task_list_p = 1; +} + +/* Attach all the observers needed by the ada-tasks module. */ + +static void +ada_tasks_attach_observers (void) +{ + observer_attach_normal_stop (&normal_stop_notification); +} + void _initialize_tasks (void) { - static struct cmd_list_element *task_cmd_list = NULL; +#ifdef GNAT_GDB extern struct cmd_list_element *cmdlist; + ada_tasks_attach_observers (); + add_info ("tasks", info_tasks_command, - "Without argument: list all known Ada tasks, with status information.\n" - "info tasks n: print detailed information of task n.\n"); + "Without argument: list all known Ada tasks, with status information.\n" + "info tasks n: print detailed information of task n."); - add_prefix_cmd ("task", class_run, task_command, - "Use this command to switch between tasks.\n\ - The new task ID must be currently known.", &task_cmd_list, "task ", 1, &cmdlist); + add_cmd ("task", class_run, task_command, + "Without argument: print the current task ID.\n" + "task n: Use this command to switch to task n.", + &cmdlist); +#endif } diff --git a/gdb/ada-typeprint.c b/gdb/ada-typeprint.c index 1939354..fb9c690 100644 --- a/gdb/ada-typeprint.c +++ b/gdb/ada-typeprint.c @@ -1,6 +1,6 @@ /* Support for printing Ada types for GDB, the GNU debugger. - Copyright 1986, 1988, 1989, 1991, 1997, 2003 Free Software - Foundation, Inc. + Copyright 1986, 1988, 1989, 1991, 1997, 1998, 1999, 2000, + 2001, 2002, 2003, 2004 Free Software Foundation, Inc. This file is part of GDB. @@ -63,11 +63,11 @@ static void print_range_type_named (char *, struct ui_file *); static char *name_buffer; static int name_buffer_len; -/* The (demangled) Ada name of TYPE. This value persists until the - next call. */ +/* The (decoded) Ada name of TYPE. This value persists until the + next call. */ static char * -demangled_type_name (struct type *type) +decoded_type_name (struct type *type) { if (ada_type_name (type) == NULL) return NULL; @@ -116,9 +116,9 @@ demangled_type_name (struct type *type) } -/* Print a description of a type in the format of a +/* Print a description of a type in the format of a typedef for the current language. - NEW is the new name for a type TYPE. */ + NEW is the new name for a type TYPE. */ void ada_typedef_print (struct type *type, struct symbol *new, @@ -130,7 +130,7 @@ ada_typedef_print (struct type *type, struct symbol *new, type_print (type, "", stream, 1); } -/* Print range type TYPE on STREAM. */ +/* Print range type TYPE on STREAM. */ static void print_range (struct type *type, struct ui_file *stream) @@ -155,9 +155,9 @@ print_range (struct type *type, struct ui_file *stream) if (TYPE_NFIELDS (type) < 2) { - /* A range needs at least 2 bounds to be printed. If there are less + /* A range needs at least 2 bounds to be printed. If there are less than 2, just print the type name instead of the range itself. - This check handles cases such as characters, for example. + This check handles cases such as characters, for example. Note that if the name is not defined, then we don't print anything. */ @@ -180,7 +180,7 @@ print_range (struct type *type, struct ui_file *stream) } /* Print the number or discriminant bound at BOUNDS+*N on STREAM, and - set *N past the bound and its delimiter, if any. */ + set *N past the bound and its delimiter, if any. */ static void print_range_bound (struct type *type, char *bounds, int *n, @@ -189,6 +189,19 @@ print_range_bound (struct type *type, char *bounds, int *n, LONGEST B; if (ada_scan_number (bounds, *n, &B, n)) { + /* STABS decodes all range types which bounds are 0 .. -1 as + unsigned integers (ie. the type code is TYPE_CODE_INT, not + TYPE_CODE_RANGE). Unfortunately, ada_print_scalar() relies + on the unsigned flag to determine whether the bound should + be printed as a signed or an unsigned value. This causes + the upper bound of the 0 .. -1 range types to be printed as + a very large unsigned number instead of -1. + To workaround this stabs deficiency, we replace the TYPE by + builtin_type_long when we detect that the bound is negative, + and the type is a TYPE_CODE_INT. The bound is negative when + 'm' is the last character of the number scanned in BOUNDS. */ + if (bounds[*n - 1] == 'm' && TYPE_CODE (type) == TYPE_CODE_INT) + type = builtin_type_long; ada_print_scalar (type, B, stream); if (bounds[*n] == '_') *n += 2; @@ -213,7 +226,7 @@ print_range_bound (struct type *type, char *bounds, int *n, /* Assuming NAME[0 .. NAME_LEN-1] is the name of a range type, print the value (if found) of the bound indicated by SUFFIX ("___L" or - "___U") according to the ___XD conventions. */ + "___U") according to the ___XD conventions. */ static void print_dynamic_range_bound (struct type *type, const char *name, int name_len, @@ -228,21 +241,20 @@ print_dynamic_range_bound (struct type *type, const char *name, int name_len, strncpy (name_buf, name, name_len); strcpy (name_buf + name_len, suffix); - B = get_int_var_value (name_buf, 0, &OK); + B = get_int_var_value (name_buf, &OK); if (OK) ada_print_scalar (type, B, stream); else fprintf_filtered (stream, "?"); } -/* Print the range type named NAME. */ +/* Print the range type named NAME. */ static void print_range_type_named (char *name, struct ui_file *stream) { struct type *raw_type = ada_find_any_type (name); struct type *base_type; - LONGEST low, high; char *subtype_info; if (raw_type == NULL) @@ -269,24 +281,24 @@ print_range_type_named (char *name, struct ui_file *stream) if (*subtype_info == 'L') { - print_range_bound (raw_type, bounds_str, &n, stream); + print_range_bound (base_type, bounds_str, &n, stream); subtype_info += 1; } else - print_dynamic_range_bound (raw_type, name, prefix_len, "___L", + print_dynamic_range_bound (base_type, name, prefix_len, "___L", stream); fprintf_filtered (stream, " .. "); if (*subtype_info == 'U') - print_range_bound (raw_type, bounds_str, &n, stream); + print_range_bound (base_type, bounds_str, &n, stream); else - print_dynamic_range_bound (raw_type, name, prefix_len, "___U", + print_dynamic_range_bound (base_type, name, prefix_len, "___U", stream); } } -/* Print enumerated type TYPE on STREAM. */ +/* Print enumerated type TYPE on STREAM. */ static void print_enum_type (struct type *type, struct ui_file *stream) @@ -315,7 +327,7 @@ print_enum_type (struct type *type, struct ui_file *stream) fprintf_filtered (stream, ")"); } -/* Print representation of Ada fixed-point type TYPE on STREAM. */ +/* Print representation of Ada fixed-point type TYPE on STREAM. */ static void print_fixed_point_type (struct type *type, struct ui_file *stream) @@ -333,7 +345,7 @@ print_fixed_point_type (struct type *type, struct ui_file *stream) } } -/* Print representation of special VAX floating-point type TYPE on STREAM. */ +/* Print representation of special VAX floating-point type TYPE on STREAM. */ static void print_vax_floating_point_type (struct type *type, struct ui_file *stream) @@ -342,10 +354,10 @@ print_vax_floating_point_type (struct type *type, struct ui_file *stream) ada_vax_float_type_suffix (type)); } -/* Print simple (constrained) array type TYPE on STREAM. LEVEL is the - recursion (indentation) level, in case the element type itself has +/* Print simple (constrained) array type TYPE on STREAM. LEVEL is the + recursion (indentation) level, in case the element type itself has nested structure, and SHOW is the number of levels of internal - structure to show (see ada_print_type). */ + structure to show (see ada_print_type). */ static void print_array_type (struct type *type, struct ui_file *stream, int show, @@ -364,7 +376,12 @@ print_array_type (struct type *type, struct ui_file *stream, int show, { if (ada_is_packed_array_type (type)) type = ada_coerce_to_simple_array_type (type); - if (ada_is_simple_array (type)) + if (type == NULL) + { + fprintf_filtered (stream, "<undecipherable array type>"); + return; + } + if (ada_is_simple_array_type (type)) { struct type *range_desc_type = ada_find_parallel_type (type, "___XA"); @@ -417,7 +434,7 @@ print_array_type (struct type *type, struct ui_file *stream, int show, } /* Print the choices encoded by field FIELD_NUM of variant-part TYPE on - STREAM, assuming the VAL_TYPE is the type of the values. */ + STREAM, assuming the VAL_TYPE is the type of the values. */ static void print_choices (struct type *type, int field_num, struct ui_file *stream, @@ -429,7 +446,7 @@ print_choices (struct type *type, int field_num, struct ui_file *stream, have_output = 0; - /* Skip over leading 'V': NOTE soon to be obsolete. */ + /* Skip over leading 'V': NOTE soon to be obsolete. */ if (name[0] == 'V') { if (!ada_scan_number (name, 1, NULL, &p)) @@ -486,14 +503,14 @@ Huh: } -/* Assuming that field FIELD_NUM of TYPE is a VARIANTS field whose - discriminant is contained in OUTER_TYPE, print its variants on STREAM. +/* Assuming that field FIELD_NUM of TYPE is a VARIANTS field whose + discriminant is contained in OUTER_TYPE, print its variants on STREAM. LEVEL is the recursion (indentation) level, in case any of the fields themselves have nested structure, and SHOW is the number of levels of internal structure - to show (see ada_print_type). For this purpose, fields nested in a + to show (see ada_print_type). For this purpose, fields nested in a variant part are taken to be at the same level as the fields - immediately outside the variant part. */ + immediately outside the variant part. */ static void print_variant_clauses (struct type *type, int field_num, @@ -501,7 +518,7 @@ print_variant_clauses (struct type *type, int field_num, int show, int level) { int i; - struct type *var_type; + struct type *var_type, *par_type; struct type *discr_type; var_type = TYPE_FIELD_TYPE (type, field_num); @@ -510,14 +527,14 @@ print_variant_clauses (struct type *type, int field_num, if (TYPE_CODE (var_type) == TYPE_CODE_PTR) { var_type = TYPE_TARGET_TYPE (var_type); - if (TYPE_FLAGS (var_type) & TYPE_FLAG_STUB) - { - var_type = ada_find_parallel_type (var_type, "___XVU"); - if (var_type == NULL) - return; - } + if (var_type == NULL || TYPE_CODE (var_type) != TYPE_CODE_UNION) + return; } + par_type = ada_find_parallel_type (var_type, "___XVU"); + if (par_type != NULL) + var_type = par_type; + for (i = 0; i < TYPE_NFIELDS (var_type); i += 1) { fprintf_filtered (stream, "\n%*swhen ", level + 4, ""); @@ -529,13 +546,13 @@ print_variant_clauses (struct type *type, int field_num, } } -/* Assuming that field FIELD_NUM of TYPE is a variant part whose +/* Assuming that field FIELD_NUM of TYPE is a variant part whose discriminants are contained in OUTER_TYPE, print a description of it - on STREAM. LEVEL is the recursion (indentation) level, in case any of - the fields themselves have nested structure, and SHOW is the number of - levels of internal structure to show (see ada_print_type). For this - purpose, fields nested in a variant part are taken to be at the same - level as the fields immediately outside the variant part. */ + on STREAM. LEVEL is the recursion (indentation) level, in case any of + the fields themselves have nested structure, and SHOW is the number of + levels of internal structure to show (see ada_print_type). For this + purpose, fields nested in a variant part are taken to be at the same + level as the fields immediately outside the variant part. */ static void print_variant_part (struct type *type, int field_num, struct type *outer_type, @@ -549,14 +566,14 @@ print_variant_part (struct type *type, int field_num, struct type *outer_type, fprintf_filtered (stream, "\n%*send case;", level + 4, ""); } -/* Print a description on STREAM of the fields in record type TYPE, whose - discriminants are in OUTER_TYPE. LEVEL is the recursion (indentation) - level, in case any of the fields themselves have nested structure, - and SHOW is the number of levels of internal structure to show - (see ada_print_type). Does not print parent type information of TYPE. - Returns 0 if no fields printed, -1 for an incomplete type, else > 0. +/* Print a description on STREAM of the fields in record type TYPE, whose + discriminants are in OUTER_TYPE. LEVEL is the recursion (indentation) + level, in case any of the fields themselves have nested structure, + and SHOW is the number of levels of internal structure to show + (see ada_print_type). Does not print parent type information of TYPE. + Returns 0 if no fields printed, -1 for an incomplete type, else > 0. Prints each field beginning on a new line, but does not put a new line at - end. */ + end. */ static int print_record_field_types (struct type *type, struct type *outer_type, @@ -598,9 +615,9 @@ print_record_field_types (struct type *type, struct type *outer_type, return flds; } -/* Print record type TYPE on STREAM. LEVEL is the recursion (indentation) - level, in case the element type itself has nested structure, and SHOW is - the number of levels of internal structure to show (see ada_print_type). */ +/* Print record type TYPE on STREAM. LEVEL is the recursion (indentation) + level, in case the element type itself has nested structure, and SHOW is + the number of levels of internal structure to show (see ada_print_type). */ static void print_record_type (struct type *type0, struct ui_file *stream, int show, @@ -609,19 +626,15 @@ print_record_type (struct type *type0, struct ui_file *stream, int show, struct type *parent_type; struct type *type; - type = type0; - if (TYPE_FLAGS (type) & TYPE_FLAG_STUB) - { - struct type *type1 = ada_find_parallel_type (type, "___XVE"); - if (type1 != NULL) - type = type1; - } + type = ada_find_parallel_type (type0, "___XVE"); + if (type == NULL) + type = type0; parent_type = ada_parent_type (type); if (ada_type_name (parent_type) != NULL) fprintf_filtered (stream, "new %s with ", - demangled_type_name (parent_type)); - else if (parent_type == NULL && ada_is_tagged_type (type)) + decoded_type_name (parent_type)); + else if (parent_type == NULL && ada_is_tagged_type (type, 0)) fprintf_filtered (stream, "tagged "); fprintf_filtered (stream, "record"); @@ -648,9 +661,9 @@ print_record_type (struct type *type0, struct ui_file *stream, int show, } /* Print the unchecked union type TYPE in something resembling Ada - format on STREAM. LEVEL is the recursion (indentation) level + format on STREAM. LEVEL is the recursion (indentation) level in case the element type itself has nested structure, and SHOW is the - number of levels of internal structure to show (see ada_print_type). */ + number of levels of internal structure to show (see ada_print_type). */ static void print_unchecked_union_type (struct type *type, struct ui_file *stream, int show, int level) @@ -685,7 +698,7 @@ print_unchecked_union_type (struct type *type, struct ui_file *stream, /* Print function or procedure type TYPE on STREAM. Make it a header - for function or procedure NAME if NAME is not null. */ + for function or procedure NAME if NAME is not null. */ static void print_func_type (struct type *type, struct ui_file *stream, char *name) @@ -728,23 +741,21 @@ print_func_type (struct type *type, struct ui_file *stream, char *name) Output goes to STREAM (via stdio). If VARSTRING is a non-empty string, print as an Ada variable/field declaration. - SHOW+1 is the maximum number of levels of internal type structure + SHOW+1 is the maximum number of levels of internal type structure to show (this applies to record types, enumerated types, and array types). SHOW is the number of levels of internal type structure to show - when there is a type name for the SHOWth deepest level (0th is + when there is a type name for the SHOWth deepest level (0th is outer level). When SHOW<0, no inner structure is shown. - LEVEL indicates level of recursion (for nested definitions). */ + LEVEL indicates level of recursion (for nested definitions). */ void ada_print_type (struct type *type0, char *varstring, struct ui_file *stream, int show, int level) { - enum type_code code; - int demangled_args; struct type *type = ada_completed_type (ada_get_base_type (type0)); - char *type_name = demangled_type_name (type); + char *type_name = decoded_type_name (type); int is_var_decl = (varstring != NULL && varstring[0] != '\0'); if (type == NULL) @@ -834,7 +845,7 @@ ada_print_type (struct type *type0, char *varstring, struct ui_file *stream, print_enum_type (type, stream); break; case TYPE_CODE_STRUCT: - if (ada_is_array_descriptor (type)) + if (ada_is_array_descriptor_type (type)) print_array_type (type, stream, show, level); else if (ada_is_bogus_array_descriptor (type)) fprintf_filtered (stream, diff --git a/gdb/ada-valprint.c b/gdb/ada-valprint.c index f5f4118..a2aa382 100644 --- a/gdb/ada-valprint.c +++ b/gdb/ada-valprint.c @@ -1,5 +1,6 @@ -/* Support for printing Ada values for GDB, the GNU debugger. - Copyright 1986, 1988, 1989, 1991, 1992, 1993, 1994, 1997, 2001 +/* Support for printing Ada values for GDB, the GNU debugger. + Copyright 1986, 1988, 1989, 1991, 1992, 1993, 1994, 1997, 2001, + 2002, 2003, 2004. Free Software Foundation, Inc. This file is part of GDB. @@ -20,6 +21,7 @@ Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. */ #include <ctype.h> #include "defs.h" +#include "gdb_string.h" #include "symtab.h" #include "gdbtypes.h" #include "expression.h" @@ -32,7 +34,7 @@ Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. */ #include "c-lang.h" #include "infcall.h" -/* Encapsulates arguments to ada_val_print. */ +/* Encapsulates arguments to ada_val_print. */ struct ada_val_print_args { struct type *type; @@ -46,6 +48,9 @@ struct ada_val_print_args enum val_prettyprint pretty; }; +extern int inspect_it; +extern unsigned int repeat_count_threshold; + static void print_record (struct type *, char *, struct ui_file *, int, int, enum val_prettyprint); @@ -64,14 +69,15 @@ static void val_print_packed_array_elements (struct type *, char *valaddr, static void adjust_type_signedness (struct type *); -static int ada_val_print_stub (void *args0); +static int ada_val_print_stub (PTR args0); static int ada_val_print_1 (struct type *, char *, int, CORE_ADDR, struct ui_file *, int, int, int, enum val_prettyprint); +static void ada_print_floating (char *, struct type *, struct ui_file *); -/* Make TYPE unsigned if its range of values includes no negatives. */ +/* Make TYPE unsigned if its range of values includes no negatives. */ static void adjust_type_signedness (struct type *type) { @@ -82,8 +88,8 @@ adjust_type_signedness (struct type *type) /* Assuming TYPE is a simple array type, prints its lower bound on STREAM, if non-standard (i.e., other than 1 for numbers, other than lower bound - of index type for enumerated type). Returns 1 if something printed, - otherwise 0. */ + of index type for enumerated type). Returns 1 if something printed, + otherwise 0. */ static int print_optional_low_bound (struct ui_file *stream, struct type *type) @@ -127,8 +133,8 @@ print_optional_low_bound (struct ui_file *stream, struct type *type) /* Version of val_print_array_elements for GNAT-style packed arrays. Prints elements of packed array of type TYPE at bit offset BITOFFSET from VALADDR on STREAM. Formats according to FORMAT and - separates with commas. RECURSE is the recursion (nesting) level. - If PRETTY, uses "prettier" format. TYPE must have been decoded (as + separates with commas. RECURSE is the recursion (nesting) level. + If PRETTY, uses "prettier" format. TYPE must have been decoded (as by ada_coerce_to_simple_array). */ static void @@ -142,11 +148,6 @@ val_print_packed_array_elements (struct type *type, char *valaddr, unsigned len; struct type *elttype; unsigned eltlen; - /* Position of the array element we are examining to see - whether it is repeated. */ - unsigned int rep1; - /* Number of repetitions we have detected so far. */ - unsigned int reps; unsigned long bitsize = TYPE_FIELD_BITSIZE (type, 0); struct value *mark = value_mark (); @@ -252,7 +253,7 @@ printable_val_type (struct type *type, char *valaddr) /* Print the character C on STREAM as part of the contents of a literal string whose delimiter is QUOTER. TYPE_LEN is the length in bytes - (1 or 2) of the character. */ + (1 or 2) of the character. */ void ada_emit_char (int c, struct ui_file *stream, int quoter, int type_len) @@ -274,7 +275,7 @@ ada_emit_char (int c, struct ui_file *stream, int quoter, int type_len) } /* Character #I of STRING, given that TYPE_LEN is the size in bytes (1 - or 2) of a character. */ + or 2) of a character. */ static int char_at (char *string, int i, int type_len) @@ -285,6 +286,58 @@ char_at (char *string, int i, int type_len) return (int) extract_unsigned_integer (string + 2 * i, 2); } +/* Wrapper around memcpy to make it legal argument to ui_file_put */ +static void +ui_memcpy (void *dest, const char *buffer, long len) +{ + memcpy (dest, buffer, (size_t) len); + ((char *) dest)[len] = '\0'; +} + +/* Print a floating-point value of type TYPE, pointed to in GDB by + VALADDR, on STREAM. Use Ada formatting conventions: there must be + a decimal point, and at least one digit before and after the + point. We use GNAT format for NaNs and infinities. */ +static void +ada_print_floating (char *valaddr, struct type *type, struct ui_file *stream) +{ + char buffer[64]; + char *s, *result; + int len; + struct ui_file *tmp_stream = mem_fileopen (); + struct cleanup *cleanups = make_cleanup_ui_file_delete (tmp_stream); + + print_floating (valaddr, type, tmp_stream); + ui_file_put (tmp_stream, ui_memcpy, buffer); + do_cleanups (cleanups); + + result = buffer; + len = strlen (result); + + /* Modify for Ada rules. */ + if ((s = strstr (result, "inf")) != NULL + || (s = strstr (result, "Inf")) != NULL + || (s = strstr (result, "INF")) != NULL) + strcpy (s, "Inf"); + else if ((s = strstr (result, "nan")) != NULL + || (s = strstr (result, "NaN")) != NULL + || (s = strstr (result, "Nan")) != NULL) + { + s[0] = s[2] = 'N'; + if (result[0] == '-') + result += 1; + } + else if (strchr (result, '.') == NULL) + { + if ((s = strchr (result, 'e')) == NULL) + fprintf_filtered (stream, "%s.0", result); + else + fprintf_filtered (stream, "%.*s.0%s", (int) (s-result), result, s); + return; + } + fprintf_filtered (stream, "%s", result); +} + void ada_printchar (int c, struct ui_file *stream) { @@ -294,7 +347,7 @@ ada_printchar (int c, struct ui_file *stream) } /* [From print_type_scalar in typeprint.c]. Print VAL on STREAM in a - form appropriate for TYPE. */ + form appropriate for TYPE. */ void ada_print_scalar (struct type *type, LONGEST val, struct ui_file *stream) @@ -463,7 +516,7 @@ printstr (struct ui_file *stream, char *string, unsigned int length, void ada_printstr (struct ui_file *stream, char *string, unsigned int length, - int force_ellipses, int width) + int width, int force_ellipses) { printstr (stream, string, length, force_ellipses, width); } @@ -471,7 +524,7 @@ ada_printstr (struct ui_file *stream, char *string, unsigned int length, /* Print data of type TYPE located at VALADDR (within GDB), which came from the inferior at address ADDRESS, onto stdio stream STREAM according to - FORMAT (a letter as for the printf % codes or 0 for natural format). + FORMAT (a letter as for the printf % codes or 0 for natural format). The data at VALADDR is in target byte order. If the data is printed as a string, returns the number of string characters @@ -508,9 +561,9 @@ ada_val_print (struct type *type, char *valaddr0, int embedded_offset, } /* Helper for ada_val_print; used as argument to catch_errors to - unmarshal the arguments to ada_val_print_1, which does the work. */ + unmarshal the arguments to ada_val_print_1, which does the work. */ static int -ada_val_print_stub (void * args0) +ada_val_print_stub (PTR args0) { struct ada_val_print_args *argsp = (struct ada_val_print_args *) args0; return ada_val_print_1 (argsp->type, argsp->valaddr0, @@ -520,7 +573,7 @@ ada_val_print_stub (void * args0) } /* See the comment on ada_val_print. This function differs in that it - * does not catch evaluation errors (leaving that to ada_val_print). */ + * does not catch evaluation errors (leaving that to ada_val_print). */ static int ada_val_print_1 (struct type *type, char *valaddr0, int embedded_offset, @@ -532,12 +585,11 @@ ada_val_print_1 (struct type *type, char *valaddr0, int embedded_offset, struct type *elttype; unsigned int eltlen; LONGEST val; - CORE_ADDR addr; char *valaddr = valaddr0 + embedded_offset; CHECK_TYPEDEF (type); - if (ada_is_array_descriptor (type) || ada_is_packed_array_type (type)) + if (ada_is_array_descriptor_type (type) || ada_is_packed_array_type (type)) { int retn; struct value *mark = value_mark (); @@ -567,6 +619,22 @@ ada_val_print_1 (struct type *type, char *valaddr0, int embedded_offset, return c_val_print (type, valaddr0, embedded_offset, address, stream, format, deref_ref, recurse, pretty); + case TYPE_CODE_PTR: + { + int ret = c_val_print (type, valaddr0, embedded_offset, address, + stream, format, deref_ref, recurse, pretty); + if (ada_is_tag_type (type)) + { + struct value *val = + value_from_contents_and_address (type, valaddr, address); + const char *name = ada_tag_name (val); + if (name != NULL) + fprintf_filtered (stream, " (%s)", name); + return 0; + } + return ret; + } + case TYPE_CODE_INT: case TYPE_CODE_RANGE: if (ada_is_fixed_point_type (type)) @@ -603,7 +671,7 @@ ada_val_print_1 (struct type *type, char *valaddr0, int embedded_offset, fprintf_filtered (stream, "%s", VALUE_CONTENTS (printable_val)); return 0; } - /* No special printing function. Do as best we can. */ + /* No special printing function. Do as best we can. */ } else if (TYPE_CODE (type) == TYPE_CODE_RANGE) { @@ -613,7 +681,7 @@ ada_val_print_1 (struct type *type, char *valaddr0, int embedded_offset, /* Obscure case of range type that has different length from its base type. Perform a conversion, or we will get a nonsense value. Actually, we could use the same - code regardless of lengths; I'm just avoiding a cast. */ + code regardless of lengths; I'm just avoiding a cast. */ struct value *v = value_cast (target_type, value_from_contents_and_address (type, valaddr, 0)); @@ -633,6 +701,20 @@ ada_val_print_1 (struct type *type, char *valaddr0, int embedded_offset, { print_scalar_formatted (valaddr, type, format, 0, stream); } + else if (ada_is_system_address_type (type)) + { + /* FIXME: We want to print System.Address variables using + the same format as for any access type. But for some + reason GNAT encodes the System.Address type as an int, + so we have to work-around this deficiency by handling + System.Address values as a special case. */ + fprintf_filtered (stream, "("); + type_print (type, "", stream, -1); + fprintf_filtered (stream, ") "); + print_address_numeric + (extract_typed_address (valaddr, builtin_type_void_data_ptr), + 1, stream); + } else { val_print_type_code_int (type, valaddr, stream); @@ -676,6 +758,14 @@ ada_val_print_1 (struct type *type, char *valaddr0, int embedded_offset, } break; + case TYPE_CODE_FLT: + if (format) + return c_val_print (type, valaddr0, embedded_offset, address, stream, + format, deref_ref, recurse, pretty); + else + ada_print_floating (valaddr0 + embedded_offset, type, stream); + break; + case TYPE_CODE_UNION: case TYPE_CODE_STRUCT: if (ada_is_bogus_array_descriptor (type)) @@ -690,66 +780,60 @@ ada_val_print_1 (struct type *type, char *valaddr0, int embedded_offset, } case TYPE_CODE_ARRAY: - if (TYPE_LENGTH (type) > 0 && TYPE_LENGTH (TYPE_TARGET_TYPE (type)) > 0) - { - elttype = TYPE_TARGET_TYPE (type); - eltlen = TYPE_LENGTH (elttype); - len = TYPE_LENGTH (type) / eltlen; + elttype = TYPE_TARGET_TYPE (type); + if (elttype == NULL) + eltlen = 0; + else + eltlen = TYPE_LENGTH (elttype); + /* FIXME: This doesn't deal with non-empty arrays of + 0-length items (not a typical case!) */ + if (eltlen == 0) + len = 0; + else + len = TYPE_LENGTH (type) / eltlen; /* For an array of chars, print with string syntax. */ - if (ada_is_string_type (type) && (format == 0 || format == 's')) + if (ada_is_string_type (type) && (format == 0 || format == 's')) + { + if (prettyprint_arrays) { - if (prettyprint_arrays) - { - print_spaces_filtered (2 + 2 * recurse, stream); - } - /* If requested, look for the first null char and only print - elements up to it. */ - if (stop_print_at_null) - { - int temp_len; - - /* Look for a NULL char. */ - for (temp_len = 0; - temp_len < len && temp_len < print_max - && char_at (valaddr, temp_len, eltlen) != 0; - temp_len += 1); - len = temp_len; - } - - printstr (stream, valaddr, len, 0, eltlen); + print_spaces_filtered (2 + 2 * recurse, stream); } - else + /* If requested, look for the first null char and only print + elements up to it. */ + if (stop_print_at_null) { - len = 0; - fprintf_filtered (stream, "("); - print_optional_low_bound (stream, type); - if (TYPE_FIELD_BITSIZE (type, 0) > 0) - val_print_packed_array_elements (type, valaddr, 0, stream, - format, recurse, pretty); - else - val_print_array_elements (type, valaddr, address, stream, - format, deref_ref, recurse, - pretty, 0); - fprintf_filtered (stream, ")"); + int temp_len; + + /* Look for a NULL char. */ + for (temp_len = 0; + temp_len < len && temp_len < print_max + && char_at (valaddr, temp_len, eltlen) != 0; + temp_len += 1); + len = temp_len; } - gdb_flush (stream); - return len; + + printstr (stream, valaddr, len, 0, eltlen); + } + else + { + len = 0; + fprintf_filtered (stream, "("); + print_optional_low_bound (stream, type); + if (TYPE_FIELD_BITSIZE (type, 0) > 0) + val_print_packed_array_elements (type, valaddr, 0, stream, + format, recurse, pretty); + else + val_print_array_elements (type, valaddr, address, stream, + format, deref_ref, recurse, + pretty, 0); + fprintf_filtered (stream, ")"); } + gdb_flush (stream); + return len; case TYPE_CODE_REF: elttype = check_typedef (TYPE_TARGET_TYPE (type)); - if (addressprint) - { - fprintf_filtered (stream, "@"); - /* Extract an address, assume that the address is unsigned. */ - print_address_numeric - (extract_unsigned_integer (valaddr, - TARGET_PTR_BIT / HOST_CHAR_BIT), - 1, stream); - if (deref_ref) - fputs_filtered (": ", stream); - } /* De-reference the reference */ if (deref_ref) { @@ -777,6 +861,7 @@ ada_val_print_1 (struct type *type, char *valaddr0, int embedded_offset, } break; } + gdb_flush (stream); return 0; } @@ -811,26 +896,21 @@ ada_value_print (struct value *val0, struct ui_file *stream, int format, struct value *val = value_from_contents_and_address (type, valaddr, address); - /* If it is a pointer, indicate what it points to. */ - if (TYPE_CODE (type) == TYPE_CODE_PTR || TYPE_CODE (type) == TYPE_CODE_REF) + /* If it is a pointer, indicate what it points to. */ + if (TYPE_CODE (type) == TYPE_CODE_PTR) { - /* Hack: remove (char *) for char strings. Their - type is indicated by the quoted string anyway. */ - if (TYPE_CODE (type) == TYPE_CODE_PTR && - TYPE_LENGTH (TYPE_TARGET_TYPE (type)) == sizeof (char) && - TYPE_CODE (TYPE_TARGET_TYPE (type)) == TYPE_CODE_INT && - !TYPE_UNSIGNED (TYPE_TARGET_TYPE (type))) - { - /* Print nothing */ - } - else + /* Hack: don't print (char *) for char strings. Their + type is indicated by the quoted string anyway. */ + if (TYPE_LENGTH (TYPE_TARGET_TYPE (type)) != sizeof (char) + || TYPE_CODE (TYPE_TARGET_TYPE (type)) != TYPE_CODE_INT + || TYPE_UNSIGNED (TYPE_TARGET_TYPE (type))) { fprintf_filtered (stream, "("); type_print (type, "", stream, -1); fprintf_filtered (stream, ") "); } } - else if (ada_is_array_descriptor (type)) + else if (ada_is_array_descriptor_type (type)) { fprintf_filtered (stream, "("); type_print (type, "", stream, -1); @@ -843,6 +923,23 @@ ada_value_print (struct value *val0, struct ui_file *stream, int format, fprintf_filtered (stream, ") (...?)"); return 0; } + + if (TYPE_CODE (type) == TYPE_CODE_ARRAY + && TYPE_LENGTH (TYPE_TARGET_TYPE (type)) == 0 + && TYPE_CODE (TYPE_INDEX_TYPE (type)) == TYPE_CODE_RANGE) + { + /* This is an array of zero-length elements, that is an array + of null records. This array needs to be printed by hand, + as the standard routine to print arrays relies on the size of + the array elements to be nonzero. This is because it computes + the number of elements in the array by dividing the array size + by the array element size. */ + fprintf_filtered (stream, "(%d .. %d => ())", + TYPE_LOW_BOUND (TYPE_INDEX_TYPE (type)), + TYPE_HIGH_BOUND (TYPE_INDEX_TYPE (type))); + return 0; + } + return (val_print (type, VALUE_CONTENTS (val), 0, address, stream, format, 1, 0, pretty)); } @@ -866,18 +963,18 @@ print_record (struct type *type, char *valaddr, struct ui_file *stream, } /* Print out fields of value at VALADDR having structure type TYPE. - + TYPE, VALADDR, STREAM, FORMAT, RECURSE, and PRETTY have the - same meanings as in ada_print_value and ada_val_print. + same meanings as in ada_print_value and ada_val_print. OUTER_TYPE and OUTER_VALADDR give type and address of enclosing record (used to get discriminant values when printing variant parts). - COMMA_NEEDED is 1 if fields have been printed at the current recursion + COMMA_NEEDED is 1 if fields have been printed at the current recursion level, so that a comma is needed before any field printed by this - call. + call. - Returns 1 if COMMA_NEEDED or any fields were printed. */ + Returns 1 if COMMA_NEEDED or any fields were printed. */ static int print_field_values (struct type *type, char *valaddr, struct ui_file *stream, |