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authorStan Shebs <shebs@codesourcery.com>1999-04-16 01:34:07 +0000
committerStan Shebs <shebs@codesourcery.com>1999-04-16 01:34:07 +0000
commit071ea11e85eb9d529cc5eb3d35f6247466a21b99 (patch)
tree5deda65b8d7b04d1f4cbc534c3206d328e1267ec /gdb/ch-lang.c
parent1730ec6b1848f0f32154277f788fb29f88d8475b (diff)
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Initial creation of sourceware repository
Diffstat (limited to 'gdb/ch-lang.c')
-rw-r--r--gdb/ch-lang.c675
1 files changed, 0 insertions, 675 deletions
diff --git a/gdb/ch-lang.c b/gdb/ch-lang.c
deleted file mode 100644
index c54e8bb..0000000
--- a/gdb/ch-lang.c
+++ /dev/null
@@ -1,675 +0,0 @@
-/* Chill language support routines for GDB, the GNU debugger.
- Copyright 1992, 1995, 1996 Free Software Foundation, Inc.
-
-This file is part of GDB.
-
-This program is free software; you can redistribute it and/or modify
-it under the terms of the GNU General Public License as published by
-the Free Software Foundation; either version 2 of the License, or
-(at your option) any later version.
-
-This program is distributed in the hope that it will be useful,
-but WITHOUT ANY WARRANTY; without even the implied warranty of
-MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
-GNU General Public License for more details.
-
-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., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. */
-
-#include "defs.h"
-#include "symtab.h"
-#include "gdbtypes.h"
-#include "value.h"
-#include "expression.h"
-#include "parser-defs.h"
-#include "language.h"
-#include "ch-lang.h"
-
-static value_ptr
-evaluate_subexp_chill PARAMS ((struct type *, struct expression *, int *, enum noside));
-
-static value_ptr
-value_chill_max_min PARAMS ((enum exp_opcode, value_ptr));
-
-static value_ptr
-value_chill_card PARAMS ((value_ptr));
-
-static value_ptr
- value_chill_length PARAMS ((value_ptr));
-
-static struct type *
-chill_create_fundamental_type PARAMS ((struct objfile *, int));
-
-static void
-chill_printstr PARAMS ((GDB_FILE *stream, char *string, unsigned int length, int width, int force_ellipses));
-
-static void
-chill_printchar PARAMS ((int, GDB_FILE *));
-
-/* For now, Chill uses a simple mangling algorithm whereby you simply
- discard everything after the occurance of two successive CPLUS_MARKER
- characters to derive the demangled form. */
-
-char *
-chill_demangle (mangled)
- const char *mangled;
-{
- const char *joiner = NULL;
- char *demangled;
- const char *cp = mangled;
-
- while (*cp)
- {
- if (is_cplus_marker (*cp))
- {
- joiner = cp;
- break;
- }
- cp++;
- }
- if (joiner != NULL && *(joiner + 1) == *joiner)
- {
- demangled = savestring (mangled, joiner - mangled);
- }
- else
- {
- demangled = NULL;
- }
- return (demangled);
-}
-
-static void
-chill_printchar (c, stream)
- register int c;
- GDB_FILE *stream;
-{
- c &= 0xFF; /* Avoid sign bit follies */
-
- if (PRINT_LITERAL_FORM (c))
- {
- if (c == '\'' || c == '^')
- fprintf_filtered (stream, "'%c%c'", c, c);
- else
- fprintf_filtered (stream, "'%c'", c);
- }
- else
- {
- fprintf_filtered (stream, "'^(%u)'", (unsigned int) c);
- }
-}
-
-/* Print the character string STRING, printing at most LENGTH characters.
- Printing stops early if the number hits print_max; repeat counts
- are printed as appropriate. Print ellipses at the end if we
- had to stop before printing LENGTH characters, or if FORCE_ELLIPSES.
- Note that gdb maintains the length of strings without counting the
- terminating null byte, while chill strings are typically written with
- an explicit null byte. So we always assume an implied null byte
- until gdb is able to maintain non-null terminated strings as well
- as null terminated strings (FIXME).
- */
-
-static void
-chill_printstr (stream, string, length, width, force_ellipses)
- GDB_FILE *stream;
- char *string;
- unsigned int length;
- int width;
- int force_ellipses;
-{
- register unsigned int i;
- unsigned int things_printed = 0;
- int in_literal_form = 0;
- int in_control_form = 0;
- int need_slashslash = 0;
- unsigned int c;
- extern int repeat_count_threshold;
- extern int print_max;
-
- if (length == 0)
- {
- fputs_filtered ("\"\"", stream);
- return;
- }
-
- for (i = 0; i < length && things_printed < print_max; ++i)
- {
- /* Position of the character we are examining
- to see whether it is repeated. */
- unsigned int rep1;
- /* Number of repetitions we have detected so far. */
- unsigned int reps;
-
- QUIT;
-
- if (need_slashslash)
- {
- fputs_filtered ("//", stream);
- need_slashslash = 0;
- }
-
- rep1 = i + 1;
- reps = 1;
- while (rep1 < length && string[rep1] == string[i])
- {
- ++rep1;
- ++reps;
- }
-
- c = string[i];
- if (reps > repeat_count_threshold)
- {
- if (in_control_form || in_literal_form)
- {
- if (in_control_form)
- fputs_filtered (")", stream);
- fputs_filtered ("\"//", stream);
- in_control_form = in_literal_form = 0;
- }
- chill_printchar (c, stream);
- fprintf_filtered (stream, "<repeats %u times>", reps);
- i = rep1 - 1;
- things_printed += repeat_count_threshold;
- need_slashslash = 1;
- }
- else
- {
- if (! in_literal_form && ! in_control_form)
- fputs_filtered ("\"", stream);
- if (PRINT_LITERAL_FORM (c))
- {
- if (!in_literal_form)
- {
- if (in_control_form)
- {
- fputs_filtered (")", stream);
- in_control_form = 0;
- }
- in_literal_form = 1;
- }
- fprintf_filtered (stream, "%c", c);
- if (c == '"' || c == '^')
- /* duplicate this one as must be done at input */
- fprintf_filtered (stream, "%c", c);
- }
- else
- {
- if (!in_control_form)
- {
- if (in_literal_form)
- {
- in_literal_form = 0;
- }
- fputs_filtered ("^(", stream);
- in_control_form = 1;
- }
- else
- fprintf_filtered (stream, ",");
- c = c & 0xff;
- fprintf_filtered (stream, "%u", (unsigned int) c);
- }
- ++things_printed;
- }
- }
-
- /* Terminate the quotes if necessary. */
- if (in_control_form)
- {
- fputs_filtered (")", stream);
- }
- if (in_literal_form || in_control_form)
- {
- fputs_filtered ("\"", stream);
- }
- if (force_ellipses || (i < length))
- {
- fputs_filtered ("...", stream);
- }
-}
-
-static struct type *
-chill_create_fundamental_type (objfile, typeid)
- struct objfile *objfile;
- int typeid;
-{
- register struct type *type = NULL;
-
- switch (typeid)
- {
- default:
- /* 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. */
- type = init_type (TYPE_CODE_INT, 2, 0, "<?type?>", objfile);
- warning ("internal error: no chill fundamental type %d", typeid);
- break;
- case FT_VOID:
- /* FIXME: Currently the GNU Chill compiler emits some DWARF entries for
- typedefs, unrelated to anything directly in the code being compiled,
- that have some FT_VOID types. Just fake it for now. */
- type = init_type (TYPE_CODE_VOID, 0, 0, "<?VOID?>", objfile);
- break;
- case FT_BOOLEAN:
- type = init_type (TYPE_CODE_BOOL, 1, TYPE_FLAG_UNSIGNED, "BOOL", objfile);
- break;
- case FT_CHAR:
- type = init_type (TYPE_CODE_CHAR, 1, TYPE_FLAG_UNSIGNED, "CHAR", objfile);
- break;
- case FT_SIGNED_CHAR:
- type = init_type (TYPE_CODE_INT, 1, 0, "BYTE", objfile);
- break;
- case FT_UNSIGNED_CHAR:
- type = init_type (TYPE_CODE_INT, 1, TYPE_FLAG_UNSIGNED, "UBYTE", objfile);
- break;
- case FT_SHORT: /* Chill ints are 2 bytes */
- type = init_type (TYPE_CODE_INT, 2, 0, "INT", objfile);
- break;
- case FT_UNSIGNED_SHORT: /* Chill ints are 2 bytes */
- type = init_type (TYPE_CODE_INT, 2, TYPE_FLAG_UNSIGNED, "UINT", objfile);
- break;
- case FT_INTEGER: /* FIXME? */
- case FT_SIGNED_INTEGER: /* FIXME? */
- case FT_LONG: /* Chill longs are 4 bytes */
- case FT_SIGNED_LONG: /* Chill longs are 4 bytes */
- type = init_type (TYPE_CODE_INT, 4, 0, "LONG", objfile);
- break;
- case FT_UNSIGNED_INTEGER: /* FIXME? */
- case FT_UNSIGNED_LONG: /* Chill longs are 4 bytes */
- type = init_type (TYPE_CODE_INT, 4, TYPE_FLAG_UNSIGNED, "ULONG", objfile);
- break;
- case FT_FLOAT:
- type = init_type (TYPE_CODE_FLT, 4, 0, "REAL", objfile);
- break;
- case FT_DBL_PREC_FLOAT:
- type = init_type (TYPE_CODE_FLT, 8, 0, "LONG_REAL", objfile);
- break;
- }
- return (type);
-}
-
-
-/* Table of operators and their precedences for printing expressions. */
-
-static const struct op_print chill_op_print_tab[] = {
- {"AND", BINOP_LOGICAL_AND, PREC_LOGICAL_AND, 0},
- {"OR", BINOP_LOGICAL_OR, PREC_LOGICAL_OR, 0},
- {"NOT", UNOP_LOGICAL_NOT, PREC_PREFIX, 0},
- {"MOD", BINOP_MOD, PREC_MUL, 0},
- {"REM", BINOP_REM, PREC_MUL, 0},
- {"SIZE",UNOP_SIZEOF, PREC_BUILTIN_FUNCTION, 0},
- {"LOWER",UNOP_LOWER, PREC_BUILTIN_FUNCTION, 0},
- {"UPPER",UNOP_UPPER, PREC_BUILTIN_FUNCTION, 0},
- {"CARD",UNOP_CARD, PREC_BUILTIN_FUNCTION, 0},
- {"MAX",UNOP_CHMAX, PREC_BUILTIN_FUNCTION, 0},
- {"MIN",UNOP_CHMIN, PREC_BUILTIN_FUNCTION, 0},
- {":=", BINOP_ASSIGN, PREC_ASSIGN, 1},
- {"=", BINOP_EQUAL, PREC_EQUAL, 0},
- {"/=", BINOP_NOTEQUAL, PREC_EQUAL, 0},
- {"<=", BINOP_LEQ, PREC_ORDER, 0},
- {">=", BINOP_GEQ, PREC_ORDER, 0},
- {">", BINOP_GTR, PREC_ORDER, 0},
- {"<", BINOP_LESS, PREC_ORDER, 0},
- {"+", BINOP_ADD, PREC_ADD, 0},
- {"-", BINOP_SUB, PREC_ADD, 0},
- {"*", BINOP_MUL, PREC_MUL, 0},
- {"/", BINOP_DIV, PREC_MUL, 0},
- {"//", BINOP_CONCAT, PREC_PREFIX, 0}, /* FIXME: precedence? */
- {"-", UNOP_NEG, PREC_PREFIX, 0},
- {"->", UNOP_IND, PREC_SUFFIX, 1},
- {"->", UNOP_ADDR, PREC_PREFIX, 0},
- {":", BINOP_RANGE, PREC_ASSIGN, 0},
- {NULL, 0, 0, 0}
-};
-
-/* The built-in types of Chill. */
-
-struct type *builtin_type_chill_bool;
-struct type *builtin_type_chill_char;
-struct type *builtin_type_chill_long;
-struct type *builtin_type_chill_ulong;
-struct type *builtin_type_chill_real;
-
-struct type ** CONST_PTR (chill_builtin_types[]) =
-{
- &builtin_type_chill_bool,
- &builtin_type_chill_char,
- &builtin_type_chill_long,
- &builtin_type_chill_ulong,
- &builtin_type_chill_real,
- 0
-};
-
-/* Calculate LOWER or UPPER of TYPE.
- Returns the result as an integer.
- *RESULT_TYPE is the appropriate type for the result. */
-
-LONGEST
-type_lower_upper (op, type, result_type)
- enum exp_opcode op; /* Either UNOP_LOWER or UNOP_UPPER */
- struct type *type;
- struct type **result_type;
-{
- LONGEST low, high;
- *result_type = type;
- CHECK_TYPEDEF (type);
- switch (TYPE_CODE (type))
- {
- case TYPE_CODE_STRUCT:
- *result_type = builtin_type_int;
- if (chill_varying_type (type))
- return type_lower_upper (op, TYPE_FIELD_TYPE (type, 1), result_type);
- break;
- case TYPE_CODE_ARRAY:
- case TYPE_CODE_BITSTRING:
- case TYPE_CODE_STRING:
- type = TYPE_FIELD_TYPE (type, 0); /* Get index type */
-
- /* ... fall through ... */
- case TYPE_CODE_RANGE:
- *result_type = TYPE_TARGET_TYPE (type);
- return op == UNOP_LOWER ? TYPE_LOW_BOUND (type) : TYPE_HIGH_BOUND (type);
-
- case TYPE_CODE_ENUM:
- case TYPE_CODE_BOOL:
- case TYPE_CODE_INT:
- case TYPE_CODE_CHAR:
- if (get_discrete_bounds (type, &low, &high) >= 0)
- {
- *result_type = type;
- return op == UNOP_LOWER ? low : high;
- }
- break;
- case TYPE_CODE_UNDEF:
- case TYPE_CODE_PTR:
- case TYPE_CODE_UNION:
- case TYPE_CODE_FUNC:
- case TYPE_CODE_FLT:
- case TYPE_CODE_VOID:
- case TYPE_CODE_SET:
- case TYPE_CODE_ERROR:
- case TYPE_CODE_MEMBER:
- case TYPE_CODE_METHOD:
- case TYPE_CODE_REF:
- case TYPE_CODE_COMPLEX:
- default:
- break;
- }
- error ("unknown mode for LOWER/UPPER builtin");
-}
-
-static value_ptr
-value_chill_length (val)
- value_ptr val;
-{
- LONGEST tmp;
- struct type *type = VALUE_TYPE (val);
- struct type *ttype;
- CHECK_TYPEDEF (type);
- switch (TYPE_CODE (type))
- {
- case TYPE_CODE_ARRAY:
- case TYPE_CODE_BITSTRING:
- case TYPE_CODE_STRING:
- tmp = type_lower_upper (UNOP_UPPER, type, &ttype)
- - type_lower_upper (UNOP_LOWER, type, &ttype) + 1;
- break;
- case TYPE_CODE_STRUCT:
- if (chill_varying_type (type))
- {
- tmp = unpack_long (TYPE_FIELD_TYPE (type, 0), VALUE_CONTENTS (val));
- break;
- }
- /* ... else fall through ... */
- default:
- error ("bad argument to LENGTH builtin");
- }
- return value_from_longest (builtin_type_int, tmp);
-}
-
-static value_ptr
-value_chill_card (val)
- value_ptr val;
-{
- LONGEST tmp = 0;
- struct type *type = VALUE_TYPE (val);
- CHECK_TYPEDEF (type);
-
- if (TYPE_CODE (type) == TYPE_CODE_SET)
- {
- struct type *range_type = TYPE_INDEX_TYPE (type);
- LONGEST lower_bound, upper_bound;
- int i;
-
- get_discrete_bounds (range_type, &lower_bound, &upper_bound);
- for (i = lower_bound; i <= upper_bound; i++)
- if (value_bit_index (type, VALUE_CONTENTS (val), i) > 0)
- tmp++;
- }
- else
- error ("bad argument to CARD builtin");
-
- return value_from_longest (builtin_type_int, tmp);
-}
-
-static value_ptr
-value_chill_max_min (op, val)
- enum exp_opcode op;
- value_ptr val;
-{
- LONGEST tmp = 0;
- struct type *type = VALUE_TYPE (val);
- struct type *elttype;
- CHECK_TYPEDEF (type);
-
- if (TYPE_CODE (type) == TYPE_CODE_SET)
- {
- LONGEST lower_bound, upper_bound;
- int i, empty = 1;
-
- elttype = TYPE_INDEX_TYPE (type);
- CHECK_TYPEDEF (elttype);
- get_discrete_bounds (elttype, &lower_bound, &upper_bound);
-
- if (op == UNOP_CHMAX)
- {
- for (i = upper_bound; i >= lower_bound; i--)
- {
- if (value_bit_index (type, VALUE_CONTENTS (val), i) > 0)
- {
- tmp = i;
- empty = 0;
- break;
- }
- }
- }
- else
- {
- for (i = lower_bound; i <= upper_bound; i++)
- {
- if (value_bit_index (type, VALUE_CONTENTS (val), i) > 0)
- {
- tmp = i;
- empty = 0;
- break;
- }
- }
- }
- if (empty)
- error ("%s for empty powerset", op == UNOP_CHMAX ? "MAX" : "MIN");
- }
- else
- error ("bad argument to %s builtin", op == UNOP_CHMAX ? "MAX" : "MIN");
-
- return value_from_longest (TYPE_CODE (elttype) == TYPE_CODE_RANGE
- ? TYPE_TARGET_TYPE (elttype)
- : elttype,
- tmp);
-}
-
-static value_ptr
-evaluate_subexp_chill (expect_type, exp, pos, noside)
- struct type *expect_type;
- register struct expression *exp;
- register int *pos;
- enum noside noside;
-{
- int pc = *pos;
- struct type *type;
- int tem, nargs;
- value_ptr arg1;
- value_ptr *argvec;
- enum exp_opcode op = exp->elts[*pos].opcode;
- switch (op)
- {
- case MULTI_SUBSCRIPT:
- if (noside == EVAL_SKIP)
- break;
- (*pos) += 3;
- nargs = longest_to_int (exp->elts[pc + 1].longconst);
- arg1 = evaluate_subexp_with_coercion (exp, pos, noside);
- type = check_typedef (VALUE_TYPE (arg1));
-
- if (nargs == 1 && TYPE_CODE (type) == TYPE_CODE_INT)
- {
- /* Looks like string repetition. */
- value_ptr string = evaluate_subexp_with_coercion (exp, pos, noside);
- return value_concat (arg1, string);
- }
-
- switch (TYPE_CODE (type))
- {
- case TYPE_CODE_PTR:
- type = check_typedef (TYPE_TARGET_TYPE (type));
- if (!type || TYPE_CODE (type) != TYPE_CODE_FUNC)
- error ("reference value used as function");
- /* ... fall through ... */
- case TYPE_CODE_FUNC:
- /* It's a function call. */
- if (noside == EVAL_AVOID_SIDE_EFFECTS)
- break;
-
- /* Allocate arg vector, including space for the function to be
- called in argvec[0] and a terminating NULL */
- argvec = (value_ptr *) alloca (sizeof (value_ptr) * (nargs + 2));
- argvec[0] = arg1;
- tem = 1;
- for (; tem <= nargs && tem <= TYPE_NFIELDS (type); tem++)
- {
- argvec[tem]
- = evaluate_subexp_chill (TYPE_FIELD_TYPE (type, tem-1),
- exp, pos, noside);
- }
- for (; tem <= nargs; tem++)
- argvec[tem] = evaluate_subexp_with_coercion (exp, pos, noside);
- argvec[tem] = 0; /* signal end of arglist */
-
- return call_function_by_hand (argvec[0], nargs, argvec + 1);
- default:
- break;
- }
-
- while (nargs-- > 0)
- {
- value_ptr index = evaluate_subexp_with_coercion (exp, pos, noside);
- arg1 = value_subscript (arg1, index);
- }
- return (arg1);
-
- case UNOP_LOWER:
- case UNOP_UPPER:
- (*pos)++;
- if (noside == EVAL_SKIP)
- {
- (*exp->language_defn->evaluate_exp) (NULL_TYPE, exp, pos, EVAL_SKIP);
- goto nosideret;
- }
- arg1 = (*exp->language_defn->evaluate_exp) (NULL_TYPE, exp, pos,
- EVAL_AVOID_SIDE_EFFECTS);
- tem = type_lower_upper (op, VALUE_TYPE (arg1), &type);
- return value_from_longest (type, tem);
-
- case UNOP_LENGTH:
- (*pos)++;
- arg1 = (*exp->language_defn->evaluate_exp) (NULL_TYPE, exp, pos, noside);
- return value_chill_length (arg1);
-
- case UNOP_CARD:
- (*pos)++;
- arg1 = (*exp->language_defn->evaluate_exp) (NULL_TYPE, exp, pos, noside);
- return value_chill_card (arg1);
-
- case UNOP_CHMAX:
- case UNOP_CHMIN:
- (*pos)++;
- arg1 = (*exp->language_defn->evaluate_exp) (NULL_TYPE, exp, pos, noside);
- return value_chill_max_min (op, arg1);
-
- case BINOP_COMMA:
- error ("',' operator used in invalid context");
-
- default:
- break;
- }
-
- return evaluate_subexp_standard (expect_type, exp, pos, noside);
- nosideret:
- return value_from_longest (builtin_type_long, (LONGEST) 1);
-}
-
-const struct language_defn chill_language_defn = {
- "chill",
- language_chill,
- chill_builtin_types,
- range_check_on,
- type_check_on,
- chill_parse, /* parser */
- chill_error, /* parser error function */
- evaluate_subexp_chill,
- chill_printchar, /* print a character constant */
- chill_printstr, /* function to print a string constant */
- NULL, /* Function to print a single char */
- chill_create_fundamental_type,/* Create fundamental type in this language */
- chill_print_type, /* Print a type using appropriate syntax */
- chill_val_print, /* Print a value using appropriate syntax */
- chill_value_print, /* Print a top-levl value */
- {"", "B'", "", ""}, /* Binary format info */
- {"O'%lo", "O'", "o", ""}, /* Octal format info */
- {"D'%ld", "D'", "d", ""}, /* Decimal format info */
- {"H'%lx", "H'", "x", ""}, /* Hex format info */
- chill_op_print_tab, /* expression operators for printing */
- 0, /* arrays are first-class (not c-style) */
- 0, /* String lower bound */
- &builtin_type_chill_char, /* Type of string elements */
- LANG_MAGIC
-};
-
-/* Initialization for Chill */
-
-void
-_initialize_chill_language ()
-{
- builtin_type_chill_bool =
- init_type (TYPE_CODE_BOOL, TARGET_CHAR_BIT / TARGET_CHAR_BIT,
- TYPE_FLAG_UNSIGNED,
- "BOOL", (struct objfile *) NULL);
- builtin_type_chill_char =
- init_type (TYPE_CODE_CHAR, TARGET_CHAR_BIT / TARGET_CHAR_BIT,
- TYPE_FLAG_UNSIGNED,
- "CHAR", (struct objfile *) NULL);
- builtin_type_chill_long =
- init_type (TYPE_CODE_INT, TARGET_LONG_BIT / TARGET_CHAR_BIT,
- 0,
- "LONG", (struct objfile *) NULL);
- builtin_type_chill_ulong =
- init_type (TYPE_CODE_INT, TARGET_LONG_BIT / TARGET_CHAR_BIT,
- TYPE_FLAG_UNSIGNED,
- "ULONG", (struct objfile *) NULL);
- builtin_type_chill_real =
- init_type (TYPE_CODE_FLT, TARGET_DOUBLE_BIT / TARGET_CHAR_BIT,
- 0,
- "LONG_REAL", (struct objfile *) NULL);
-
- add_language (&chill_language_defn);
-}