diff options
Diffstat (limited to 'gdb/symtab.c')
| -rw-r--r-- | gdb/symtab.c | 1251 |
1 files changed, 20 insertions, 1231 deletions
diff --git a/gdb/symtab.c b/gdb/symtab.c index 8de14b7..09a8d79 100644 --- a/gdb/symtab.c +++ b/gdb/symtab.c @@ -51,16 +51,8 @@ extern char *find_template_name_end (char *); /* Prototypes for local functions */ -static int find_methods (struct type *, char *, struct symbol **); - static void completion_list_add_name (char *, char *, int, char *, char *); -static void build_canonical_line_spec (struct symtab_and_line *, - char *, char ***); - -static struct symtabs_and_lines decode_line_2 (struct symbol *[], - int, int, char ***); - static void rbreak_command (char *, int); static void types_info (char *, int); @@ -73,10 +65,12 @@ static void sources_info (char *, int); static void output_source_filename (char *, int *); -char *operator_chars (char *, char **); - static int find_line_common (struct linetable *, int, int *); +/* This one is used by linespec.c */ + +char *operator_chars (char *p, char **end); + static struct partial_symbol *lookup_partial_symbol (struct partial_symtab *, const char *, int, namespace_enum); @@ -90,8 +84,6 @@ static struct symbol *lookup_symbol_aux (const char *name, const symtab **symtab); -static void cplusplus_hint (char *); - static struct symbol *find_active_alias (struct symbol *sym, CORE_ADDR addr); /* This flag is used in hppa-tdep.c, and set in hp-symtab-read.c */ @@ -1820,9 +1812,6 @@ find_pc_line (CORE_ADDR pc, int notcurrent) return find_pc_sect_line (pc, section, notcurrent); } - -static struct symtab *find_line_symtab (struct symtab *, int, int *, int *); - /* Find line number LINE in any symtab whose name is the same as SYMTAB. @@ -1833,7 +1822,7 @@ static struct symtab *find_line_symtab (struct symtab *, int, int *, int *); If not found, return NULL. */ -static struct symtab * +struct symtab * find_line_symtab (struct symtab *symtab, int line, int *index, int *exact_match) { int exact; @@ -2040,10 +2029,7 @@ find_pc_line_pc_range (CORE_ADDR pc, CORE_ADDR *startptr, CORE_ADDR *endptr) If the argument FUNFIRSTLINE is nonzero, we want the first line of real code inside the function. */ -static struct symtab_and_line -find_function_start_sal (struct symbol *sym, int); - -static struct symtab_and_line +struct symtab_and_line find_function_start_sal (struct symbol *sym, int funfirstline) { CORE_ADDR pc; @@ -2088,7 +2074,7 @@ find_function_start_sal (struct symbol *sym, int funfirstline) return sal; } - + /* If P is of the form "operator[ \t]+..." where `...' is some legitimate operator text, return a pointer to the beginning of the substring of the operator text. @@ -2171,1216 +2157,6 @@ operator_chars (char *p, char **end) *end = ""; return *end; } - -/* Return the number of methods described for TYPE, including the - methods from types it derives from. This can't be done in the symbol - reader because the type of the baseclass might still be stubbed - when the definition of the derived class is parsed. */ - -static int total_number_of_methods (struct type *type); - -static int -total_number_of_methods (struct type *type) -{ - int n; - int count; - - CHECK_TYPEDEF (type); - if (TYPE_CPLUS_SPECIFIC (type) == NULL) - return 0; - count = TYPE_NFN_FIELDS_TOTAL (type); - - for (n = 0; n < TYPE_N_BASECLASSES (type); n++) - count += total_number_of_methods (TYPE_BASECLASS (type, n)); - - return count; -} - -/* Recursive helper function for decode_line_1. - Look for methods named NAME in type T. - Return number of matches. - Put matches in SYM_ARR, which should have been allocated with - a size of total_number_of_methods (T) * sizeof (struct symbol *). - Note that this function is g++ specific. */ - -static int -find_methods (struct type *t, char *name, struct symbol **sym_arr) -{ - int i1 = 0; - int ibase; - struct symbol *sym_class; - char *class_name = type_name_no_tag (t); - - /* Ignore this class if it doesn't have a name. This is ugly, but - unless we figure out how to get the physname without the name of - the class, then the loop can't do any good. */ - if (class_name - && (sym_class = lookup_symbol (class_name, - (struct block *) NULL, - STRUCT_NAMESPACE, - (int *) NULL, - (struct symtab **) NULL))) - { - int method_counter; - - /* FIXME: Shouldn't this just be CHECK_TYPEDEF (t)? */ - t = SYMBOL_TYPE (sym_class); - - /* Loop over each method name. At this level, all overloads of a name - are counted as a single name. There is an inner loop which loops over - each overload. */ - - for (method_counter = TYPE_NFN_FIELDS (t) - 1; - method_counter >= 0; - --method_counter) - { - int field_counter; - char *method_name = TYPE_FN_FIELDLIST_NAME (t, method_counter); - char dem_opname[64]; - - if (strncmp (method_name, "__", 2) == 0 || - strncmp (method_name, "op", 2) == 0 || - strncmp (method_name, "type", 4) == 0) - { - if (cplus_demangle_opname (method_name, dem_opname, DMGL_ANSI)) - method_name = dem_opname; - else if (cplus_demangle_opname (method_name, dem_opname, 0)) - method_name = dem_opname; - } - - if (STREQ (name, method_name)) - /* Find all the overloaded methods with that name. */ - for (field_counter = TYPE_FN_FIELDLIST_LENGTH (t, method_counter) - 1; - field_counter >= 0; - --field_counter) - { - struct fn_field *f; - char *phys_name; - - f = TYPE_FN_FIELDLIST1 (t, method_counter); - - if (TYPE_FN_FIELD_STUB (f, field_counter)) - { - char *tmp_name; - - tmp_name = gdb_mangle_name (t, - method_counter, - field_counter); - phys_name = alloca (strlen (tmp_name) + 1); - strcpy (phys_name, tmp_name); - free (tmp_name); - } - else - phys_name = TYPE_FN_FIELD_PHYSNAME (f, field_counter); - - /* Destructor is handled by caller, dont add it to the list */ - if (DESTRUCTOR_PREFIX_P (phys_name)) - continue; - - sym_arr[i1] = lookup_symbol (phys_name, - NULL, VAR_NAMESPACE, - (int *) NULL, - (struct symtab **) NULL); - if (sym_arr[i1]) - i1++; - else - { - /* This error message gets printed, but the method - still seems to be found - fputs_filtered("(Cannot find method ", gdb_stdout); - fprintf_symbol_filtered (gdb_stdout, phys_name, - language_cplus, - DMGL_PARAMS | DMGL_ANSI); - fputs_filtered(" - possibly inlined.)\n", gdb_stdout); - */ - } - } - } - } - - /* Only search baseclasses if there is no match yet, since names in - derived classes override those in baseclasses. - - FIXME: The above is not true; it is only true of member functions - if they have the same number of arguments (??? - section 13.1 of the - ARM says the function members are not in the same scope but doesn't - really spell out the rules in a way I understand. In any case, if - the number of arguments differ this is a case in which we can overload - rather than hiding without any problem, and gcc 2.4.5 does overload - rather than hiding in this case). */ - - if (i1 == 0) - for (ibase = 0; ibase < TYPE_N_BASECLASSES (t); ibase++) - i1 += find_methods (TYPE_BASECLASS (t, ibase), name, sym_arr + i1); - - return i1; -} - -/* Helper function for decode_line_1. - Build a canonical line spec in CANONICAL if it is non-NULL and if - the SAL has a symtab. - If SYMNAME is non-NULL the canonical line spec is `filename:symname'. - If SYMNAME is NULL the line number from SAL is used and the canonical - line spec is `filename:linenum'. */ - -static void -build_canonical_line_spec (struct symtab_and_line *sal, char *symname, - char ***canonical) -{ - char **canonical_arr; - char *canonical_name; - char *filename; - struct symtab *s = sal->symtab; - - if (s == (struct symtab *) NULL - || s->filename == (char *) NULL - || canonical == (char ***) NULL) - return; - - canonical_arr = (char **) xmalloc (sizeof (char *)); - *canonical = canonical_arr; - - filename = s->filename; - if (symname != NULL) - { - canonical_name = xmalloc (strlen (filename) + strlen (symname) + 2); - sprintf (canonical_name, "%s:%s", filename, symname); - } - else - { - canonical_name = xmalloc (strlen (filename) + 30); - sprintf (canonical_name, "%s:%d", filename, sal->line); - } - canonical_arr[0] = canonical_name; -} - - - -/* Find an instance of the character C in the string S that is outside - of all parenthesis pairs, single-quoted strings, and double-quoted - strings. */ -static char * -find_toplevel_char (char *s, char c) -{ - int quoted = 0; /* zero if we're not in quotes; - '"' if we're in a double-quoted string; - '\'' if we're in a single-quoted string. */ - int depth = 0; /* number of unclosed parens we've seen */ - char *scan; - - for (scan = s; *scan; scan++) - { - if (quoted) - { - if (*scan == quoted) - quoted = 0; - else if (*scan == '\\' && *(scan + 1)) - scan++; - } - else if (*scan == c && ! quoted && depth == 0) - return scan; - else if (*scan == '"' || *scan == '\'') - quoted = *scan; - else if (*scan == '(') - depth++; - else if (*scan == ')' && depth > 0) - depth--; - } - - return 0; -} - - -/* Parse a string that specifies a line number. - Pass the address of a char * variable; that variable will be - advanced over the characters actually parsed. - - The string can be: - - LINENUM -- that line number in current file. PC returned is 0. - FILE:LINENUM -- that line in that file. PC returned is 0. - FUNCTION -- line number of openbrace of that function. - PC returned is the start of the function. - VARIABLE -- line number of definition of that variable. - PC returned is 0. - FILE:FUNCTION -- likewise, but prefer functions in that file. - *EXPR -- line in which address EXPR appears. - - This may all be followed by an "if EXPR", which we ignore. - - FUNCTION may be an undebuggable function found in minimal symbol table. - - If the argument FUNFIRSTLINE is nonzero, we want the first line - of real code inside a function when a function is specified, and it is - not OK to specify a variable or type to get its line number. - - DEFAULT_SYMTAB specifies the file to use if none is specified. - It defaults to current_source_symtab. - DEFAULT_LINE specifies the line number to use for relative - line numbers (that start with signs). Defaults to current_source_line. - If CANONICAL is non-NULL, store an array of strings containing the canonical - line specs there if necessary. Currently overloaded member functions and - line numbers 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 callers responsibility to free them. - - Note that it is possible to return zero for the symtab - if no file is validly specified. Callers must check that. - Also, the line number returned may be invalid. */ - -/* We allow single quotes in various places. This is a hideous - kludge, which exists because the completer can't yet deal with the - lack of single quotes. FIXME: write a linespec_completer which we - can use as appropriate instead of make_symbol_completion_list. */ - -struct symtabs_and_lines -decode_line_1 (char **argptr, int funfirstline, struct symtab *default_symtab, - int default_line, char ***canonical) -{ - struct symtabs_and_lines values; -#ifdef HPPA_COMPILER_BUG - /* FIXME: The native HP 9000/700 compiler has a bug which appears - when optimizing this file with target i960-vxworks. I haven't - been able to construct a simple test case. The problem is that - in the second call to SKIP_PROLOGUE below, the compiler somehow - does not realize that the statement val = find_pc_line (...) will - change the values of the fields of val. It extracts the elements - into registers at the top of the block, and does not update the - registers after the call to find_pc_line. You can check this by - inserting a printf at the end of find_pc_line to show what values - it is returning for val.pc and val.end and another printf after - the call to see what values the function actually got (remember, - this is compiling with cc -O, with this patch removed). You can - also examine the assembly listing: search for the second call to - skip_prologue; the LDO statement before the next call to - find_pc_line loads the address of the structure which - find_pc_line will return; if there is a LDW just before the LDO, - which fetches an element of the structure, then the compiler - still has the bug. - - Setting val to volatile avoids the problem. We must undef - volatile, because the HPPA native compiler does not define - __STDC__, although it does understand volatile, and so volatile - will have been defined away in defs.h. */ -#undef volatile - volatile struct symtab_and_line val; -#define volatile /*nothing */ -#else - struct symtab_and_line val; -#endif - register char *p, *p1; - char *q, *pp, *ii, *p2; -#if 0 - char *q1; -#endif - register struct symtab *s; - - register struct symbol *sym; - /* The symtab that SYM was found in. */ - struct symtab *sym_symtab; - - register CORE_ADDR pc; - register struct minimal_symbol *msymbol; - char *copy; - struct symbol *sym_class; - int i1; - int is_quoted; - int is_quote_enclosed; - int has_parens; - int has_if = 0; - int has_comma = 0; - struct symbol **sym_arr; - struct type *t; - char *saved_arg = *argptr; - extern char *gdb_completer_quote_characters; - - INIT_SAL (&val); /* initialize to zeroes */ - - /* Defaults have defaults. */ - - if (default_symtab == 0) - { - default_symtab = current_source_symtab; - default_line = current_source_line; - } - - /* See if arg is *PC */ - - if (**argptr == '*') - { - (*argptr)++; - pc = parse_and_eval_address_1 (argptr); - - values.sals = (struct symtab_and_line *) - xmalloc (sizeof (struct symtab_and_line)); - - values.nelts = 1; - values.sals[0] = find_pc_line (pc, 0); - values.sals[0].pc = pc; - values.sals[0].section = find_pc_overlay (pc); - - return values; - } - - /* 'has_if' is for the syntax: - * (gdb) break foo if (a==b) - */ - if ((ii = strstr (*argptr, " if ")) != NULL || - (ii = strstr (*argptr, "\tif ")) != NULL || - (ii = strstr (*argptr, " if\t")) != NULL || - (ii = strstr (*argptr, "\tif\t")) != NULL || - (ii = strstr (*argptr, " if(")) != NULL || - (ii = strstr (*argptr, "\tif( ")) != NULL) - has_if = 1; - /* Temporarily zap out "if (condition)" to not - * confuse the parenthesis-checking code below. - * This is undone below. Do not change ii!! - */ - if (has_if) - { - *ii = '\0'; - } - - /* Set various flags. - * 'has_parens' is important for overload checking, where - * we allow things like: - * (gdb) break c::f(int) - */ - - /* Maybe arg is FILE : LINENUM or FILE : FUNCTION */ - - is_quoted = (**argptr - && strchr (gdb_completer_quote_characters, **argptr) != NULL); - - has_parens = ((pp = strchr (*argptr, '(')) != NULL - && (pp = strrchr (pp, ')')) != NULL); - - /* Now that we're safely past the has_parens check, - * put back " if (condition)" so outer layers can see it - */ - if (has_if) - *ii = ' '; - - /* Maybe we were called with a line range FILENAME:LINENUM,FILENAME:LINENUM - and we must isolate the first half. Outer layers will call again later - for the second half. - - Don't count commas that appear in argument lists of overloaded - functions, or in quoted strings. It's stupid to go to this much - trouble when the rest of the function is such an obvious roach hotel. */ - ii = find_toplevel_char (*argptr, ','); - has_comma = (ii != 0); - - /* Temporarily zap out second half to not - * confuse the code below. - * This is undone below. Do not change ii!! - */ - if (has_comma) - { - *ii = '\0'; - } - - /* Maybe arg is FILE : LINENUM or FILE : FUNCTION */ - /* May also be CLASS::MEMBER, or NAMESPACE::NAME */ - /* Look for ':', but ignore inside of <> */ - - s = NULL; - p = *argptr; - if (p[0] == '"') - { - is_quote_enclosed = 1; - p++; - } - else - is_quote_enclosed = 0; - for (; *p; p++) - { - if (p[0] == '<') - { - char *temp_end = find_template_name_end (p); - if (!temp_end) - error ("malformed template specification in command"); - p = temp_end; - } - /* Check for the end of the first half of the linespec. End of line, - a tab, a double colon or the last single colon, or a space. But - if enclosed in double quotes we do not break on enclosed spaces */ - if (!*p - || p[0] == '\t' - || ((p[0] == ':') - && ((p[1] == ':') || (strchr (p + 1, ':') == NULL))) - || ((p[0] == ' ') && !is_quote_enclosed)) - break; - if (p[0] == '.' && strchr (p, ':') == NULL) /* Java qualified method. */ - { - /* Find the *last* '.', since the others are package qualifiers. */ - for (p1 = p; *p1; p1++) - { - if (*p1 == '.') - p = p1; - } - break; - } - } - while (p[0] == ' ' || p[0] == '\t') - p++; - - /* if the closing double quote was left at the end, remove it */ - if (is_quote_enclosed) - { - char *closing_quote = strchr (p, '"'); - if (closing_quote && closing_quote[1] == '\0') - *closing_quote = '\0'; - } - - /* Now that we've safely parsed the first half, - * put back ',' so outer layers can see it - */ - if (has_comma) - *ii = ','; - - if ((p[0] == ':' || p[0] == '.') && !has_parens) - { - /* C++ */ - /* ... or Java */ - if (is_quoted) - *argptr = *argptr + 1; - if (p[0] == '.' || p[1] == ':') - { - char *saved_arg2 = *argptr; - char *temp_end; - /* First check for "global" namespace specification, - of the form "::foo". If found, skip over the colons - and jump to normal symbol processing */ - if (p[0] == ':' - && ((*argptr == p) || (p[-1] == ' ') || (p[-1] == '\t'))) - saved_arg2 += 2; - - /* We have what looks like a class or namespace - scope specification (A::B), possibly with many - levels of namespaces or classes (A::B::C::D). - - Some versions of the HP ANSI C++ compiler (as also possibly - other compilers) generate class/function/member names with - embedded double-colons if they are inside namespaces. To - handle this, we loop a few times, considering larger and - larger prefixes of the string as though they were single - symbols. So, if the initially supplied string is - A::B::C::D::foo, we have to look up "A", then "A::B", - then "A::B::C", then "A::B::C::D", and finally - "A::B::C::D::foo" as single, monolithic symbols, because - A, B, C or D may be namespaces. - - Note that namespaces can nest only inside other - namespaces, and not inside classes. So we need only - consider *prefixes* of the string; there is no need to look up - "B::C" separately as a symbol in the previous example. */ - - p2 = p; /* save for restart */ - while (1) - { - /* Extract the class name. */ - p1 = p; - while (p != *argptr && p[-1] == ' ') - --p; - copy = (char *) alloca (p - *argptr + 1); - memcpy (copy, *argptr, p - *argptr); - copy[p - *argptr] = 0; - - /* Discard the class name from the arg. */ - p = p1 + (p1[0] == ':' ? 2 : 1); - while (*p == ' ' || *p == '\t') - p++; - *argptr = p; - - sym_class = lookup_symbol (copy, 0, STRUCT_NAMESPACE, 0, - (struct symtab **) NULL); - - if (sym_class && - (t = check_typedef (SYMBOL_TYPE (sym_class)), - (TYPE_CODE (t) == TYPE_CODE_STRUCT - || TYPE_CODE (t) == TYPE_CODE_UNION))) - { - /* Arg token is not digits => try it as a function name - Find the next token(everything up to end or next blank). */ - if (**argptr - && strchr (gdb_completer_quote_characters, **argptr) != NULL) - { - p = skip_quoted (*argptr); - *argptr = *argptr + 1; - } - else - { - p = *argptr; - while (*p && *p != ' ' && *p != '\t' && *p != ',' && *p != ':') - p++; - } -/* - q = operator_chars (*argptr, &q1); - if (q1 - q) - { - char *opname; - char *tmp = alloca (q1 - q + 1); - memcpy (tmp, q, q1 - q); - tmp[q1 - q] = '\0'; - opname = cplus_mangle_opname (tmp, DMGL_ANSI); - if (opname == NULL) - { - error_begin (); - printf_filtered ("no mangling for \"%s\"\n", tmp); - cplusplus_hint (saved_arg); - return_to_top_level (RETURN_ERROR); - } - copy = (char*) alloca (3 + strlen(opname)); - sprintf (copy, "__%s", opname); - p = q1; - } - else - */ - { - copy = (char *) alloca (p - *argptr + 1); - memcpy (copy, *argptr, p - *argptr); - copy[p - *argptr] = '\0'; - if (p != *argptr - && copy[p - *argptr - 1] - && strchr (gdb_completer_quote_characters, - copy[p - *argptr - 1]) != NULL) - copy[p - *argptr - 1] = '\0'; - } - - /* no line number may be specified */ - while (*p == ' ' || *p == '\t') - p++; - *argptr = p; - - sym = 0; - i1 = 0; /* counter for the symbol array */ - sym_arr = (struct symbol **) alloca (total_number_of_methods (t) - * sizeof (struct symbol *)); - - if (destructor_name_p (copy, t)) - { - /* Destructors are a special case. */ - int m_index, f_index; - - if (get_destructor_fn_field (t, &m_index, &f_index)) - { - struct fn_field *f = TYPE_FN_FIELDLIST1 (t, m_index); - - sym_arr[i1] = - lookup_symbol (TYPE_FN_FIELD_PHYSNAME (f, f_index), - NULL, VAR_NAMESPACE, (int *) NULL, - (struct symtab **) NULL); - if (sym_arr[i1]) - i1++; - } - } - else - i1 = find_methods (t, copy, sym_arr); - if (i1 == 1) - { - /* There is exactly one field with that name. */ - sym = sym_arr[0]; - - if (sym && SYMBOL_CLASS (sym) == LOC_BLOCK) - { - values.sals = (struct symtab_and_line *) - xmalloc (sizeof (struct symtab_and_line)); - values.nelts = 1; - values.sals[0] = find_function_start_sal (sym, - funfirstline); - } - else - { - values.nelts = 0; - } - return values; - } - if (i1 > 0) - { - /* There is more than one field with that name - (overloaded). Ask the user which one to use. */ - return decode_line_2 (sym_arr, i1, funfirstline, canonical); - } - else - { - char *tmp; - - if (OPNAME_PREFIX_P (copy)) - { - tmp = (char *) alloca (strlen (copy + 3) + 9); - strcpy (tmp, "operator "); - strcat (tmp, copy + 3); - } - else - tmp = copy; - error_begin (); - if (tmp[0] == '~') - printf_filtered - ("the class `%s' does not have destructor defined\n", - SYMBOL_SOURCE_NAME (sym_class)); - else - printf_filtered - ("the class %s does not have any method named %s\n", - SYMBOL_SOURCE_NAME (sym_class), tmp); - cplusplus_hint (saved_arg); - return_to_top_level (RETURN_ERROR); - } - } - - /* Move pointer up to next possible class/namespace token */ - p = p2 + 1; /* restart with old value +1 */ - /* Move pointer ahead to next double-colon */ - while (*p && (p[0] != ' ') && (p[0] != '\t') && (p[0] != '\'')) - { - if (p[0] == '<') - { - temp_end = find_template_name_end (p); - if (!temp_end) - error ("malformed template specification in command"); - p = temp_end; - } - else if ((p[0] == ':') && (p[1] == ':')) - break; /* found double-colon */ - else - p++; - } - - if (*p != ':') - break; /* out of the while (1) */ - - p2 = p; /* save restart for next time around */ - *argptr = saved_arg2; /* restore argptr */ - } /* while (1) */ - - /* Last chance attempt -- check entire name as a symbol */ - /* Use "copy" in preparation for jumping out of this block, - to be consistent with usage following the jump target */ - copy = (char *) alloca (p - saved_arg2 + 1); - memcpy (copy, saved_arg2, p - saved_arg2); - /* Note: if is_quoted should be true, we snuff out quote here anyway */ - copy[p - saved_arg2] = '\000'; - /* Set argptr to skip over the name */ - *argptr = (*p == '\'') ? p + 1 : p; - /* Look up entire name */ - sym = lookup_symbol (copy, 0, VAR_NAMESPACE, 0, &sym_symtab); - s = (struct symtab *) 0; - /* Prepare to jump: restore the " if (condition)" so outer layers see it */ - /* Symbol was found --> jump to normal symbol processing. - Code following "symbol_found" expects "copy" to have the - symbol name, "sym" to have the symbol pointer, "s" to be - a specified file's symtab, and sym_symtab to be the symbol's - symtab. */ - /* By jumping there we avoid falling through the FILE:LINE and - FILE:FUNC processing stuff below */ - if (sym) - goto symbol_found; - - /* Couldn't find any interpretation as classes/namespaces, so give up */ - error_begin (); - /* The quotes are important if copy is empty. */ - printf_filtered - ("Can't find member of namespace, class, struct, or union named \"%s\"\n", copy); - cplusplus_hint (saved_arg); - return_to_top_level (RETURN_ERROR); - } - /* end of C++ */ - - - /* Extract the file name. */ - p1 = p; - while (p != *argptr && p[-1] == ' ') - --p; - if ((*p == '"') && is_quote_enclosed) - --p; - copy = (char *) alloca (p - *argptr + 1); - if ((**argptr == '"') && is_quote_enclosed) - { - memcpy (copy, *argptr + 1, p - *argptr - 1); - /* It may have the ending quote right after the file name */ - if (copy[p - *argptr - 2] == '"') - copy[p - *argptr - 2] = 0; - else - copy[p - *argptr - 1] = 0; - } - else - { - memcpy (copy, *argptr, p - *argptr); - copy[p - *argptr] = 0; - } - - /* Find that file's data. */ - s = lookup_symtab (copy); - if (s == 0) - { - if (!have_full_symbols () && !have_partial_symbols ()) - error (no_symtab_msg); - error ("No source file named %s.", copy); - } - - /* Discard the file name from the arg. */ - p = p1 + 1; - while (*p == ' ' || *p == '\t') - p++; - *argptr = p; - } -#if 0 - /* No one really seems to know why this was added. It certainly - breaks the command line, though, whenever the passed - name is of the form ClassName::Method. This bit of code - singles out the class name, and if funfirstline is set (for - example, you are setting a breakpoint at this function), - you get an error. This did not occur with earlier - verions, so I am ifdef'ing this out. 3/29/99 */ - else - { - /* Check if what we have till now is a symbol name */ - - /* We may be looking at a template instantiation such - as "foo<int>". Check here whether we know about it, - instead of falling through to the code below which - handles ordinary function names, because that code - doesn't like seeing '<' and '>' in a name -- the - skip_quoted call doesn't go past them. So see if we - can figure it out right now. */ - - copy = (char *) alloca (p - *argptr + 1); - memcpy (copy, *argptr, p - *argptr); - copy[p - *argptr] = '\000'; - sym = lookup_symbol (copy, 0, VAR_NAMESPACE, 0, &sym_symtab); - if (sym) - { - /* Yes, we have a symbol; jump to symbol processing */ - /* Code after symbol_found expects S, SYM_SYMTAB, SYM, - and COPY to be set correctly */ - *argptr = (*p == '\'') ? p + 1 : p; - s = (struct symtab *) 0; - goto symbol_found; - } - /* Otherwise fall out from here and go to file/line spec - processing, etc. */ - } -#endif - - /* S is specified file's symtab, or 0 if no file specified. - arg no longer contains the file name. */ - - /* Check whether arg is all digits (and sign) */ - - q = *argptr; - if (*q == '-' || *q == '+') - q++; - while (*q >= '0' && *q <= '9') - q++; - - if (q != *argptr && (*q == 0 || *q == ' ' || *q == '\t' || *q == ',')) - { - /* We found a token consisting of all digits -- at least one digit. */ - enum sign - { - none, plus, minus - } - sign = none; - - /* We might need a canonical line spec if no file was specified. */ - int need_canonical = (s == 0) ? 1 : 0; - - /* This is where we need to make sure that we have good defaults. - We must guarantee that this section of code is never executed - when we are called with just a function name, since - select_source_symtab calls us with such an argument */ - - if (s == 0 && default_symtab == 0) - { - select_source_symtab (0); - default_symtab = current_source_symtab; - default_line = current_source_line; - } - - if (**argptr == '+') - sign = plus, (*argptr)++; - else if (**argptr == '-') - sign = minus, (*argptr)++; - val.line = atoi (*argptr); - switch (sign) - { - case plus: - if (q == *argptr) - val.line = 5; - if (s == 0) - val.line = default_line + val.line; - break; - case minus: - if (q == *argptr) - val.line = 15; - if (s == 0) - val.line = default_line - val.line; - else - val.line = 1; - break; - case none: - break; /* No need to adjust val.line. */ - } - - while (*q == ' ' || *q == '\t') - q++; - *argptr = q; - if (s == 0) - s = default_symtab; - - /* It is possible that this source file has more than one symtab, - and that the new line number specification has moved us from the - default (in s) to a new one. */ - val.symtab = find_line_symtab (s, val.line, NULL, NULL); - if (val.symtab == 0) - val.symtab = s; - - val.pc = 0; - values.sals = (struct symtab_and_line *) - xmalloc (sizeof (struct symtab_and_line)); - values.sals[0] = val; - values.nelts = 1; - if (need_canonical) - build_canonical_line_spec (values.sals, NULL, canonical); - return values; - } - - /* Arg token is not digits => try it as a variable name - Find the next token (everything up to end or next whitespace). */ - - if (**argptr == '$') /* May be a convenience variable */ - p = skip_quoted (*argptr + (((*argptr)[1] == '$') ? 2 : 1)); /* One or two $ chars possible */ - else if (is_quoted) - { - p = skip_quoted (*argptr); - if (p[-1] != '\'') - error ("Unmatched single quote."); - } - else if (has_parens) - { - p = pp + 1; - } - else - { - p = skip_quoted (*argptr); - } - - if (is_quote_enclosed && **argptr == '"') - (*argptr)++; - - copy = (char *) alloca (p - *argptr + 1); - memcpy (copy, *argptr, p - *argptr); - copy[p - *argptr] = '\0'; - if (p != *argptr - && copy[0] - && copy[0] == copy[p - *argptr - 1] - && strchr (gdb_completer_quote_characters, copy[0]) != NULL) - { - copy[p - *argptr - 1] = '\0'; - copy++; - } - while (*p == ' ' || *p == '\t') - p++; - *argptr = p; - - /* If it starts with $: may be a legitimate variable or routine name - (e.g. HP-UX millicode routines such as $$dyncall), or it may - be history value, or it may be a convenience variable */ - - if (*copy == '$') - { - value_ptr valx; - int index = 0; - int need_canonical = 0; - - p = (copy[1] == '$') ? copy + 2 : copy + 1; - while (*p >= '0' && *p <= '9') - p++; - if (!*p) /* reached end of token without hitting non-digit */ - { - /* We have a value history reference */ - sscanf ((copy[1] == '$') ? copy + 2 : copy + 1, "%d", &index); - valx = access_value_history ((copy[1] == '$') ? -index : index); - if (TYPE_CODE (VALUE_TYPE (valx)) != TYPE_CODE_INT) - error ("History values used in line specs must have integer values."); - } - else - { - /* Not all digits -- may be user variable/function or a - convenience variable */ - - /* Look up entire name as a symbol first */ - sym = lookup_symbol (copy, 0, VAR_NAMESPACE, 0, &sym_symtab); - s = (struct symtab *) 0; - need_canonical = 1; - /* Symbol was found --> jump to normal symbol processing. - Code following "symbol_found" expects "copy" to have the - symbol name, "sym" to have the symbol pointer, "s" to be - a specified file's symtab, and sym_symtab to be the symbol's - symtab. */ - if (sym) - goto symbol_found; - - /* If symbol was not found, look in minimal symbol tables */ - msymbol = lookup_minimal_symbol (copy, 0, 0); - /* Min symbol was found --> jump to minsym processing. */ - if (msymbol) - goto minimal_symbol_found; - - /* Not a user variable or function -- must be convenience variable */ - need_canonical = (s == 0) ? 1 : 0; - valx = value_of_internalvar (lookup_internalvar (copy + 1)); - if (TYPE_CODE (VALUE_TYPE (valx)) != TYPE_CODE_INT) - error ("Convenience variables used in line specs must have integer values."); - } - - /* Either history value or convenience value from above, in valx */ - val.symtab = s ? s : default_symtab; - val.line = value_as_long (valx); - val.pc = 0; - - values.sals = (struct symtab_and_line *) xmalloc (sizeof val); - values.sals[0] = val; - values.nelts = 1; - - if (need_canonical) - build_canonical_line_spec (values.sals, NULL, canonical); - - return values; - } - - - /* Look up that token as a variable. - If file specified, use that file's per-file block to start with. */ - - sym = lookup_symbol (copy, - (s ? BLOCKVECTOR_BLOCK (BLOCKVECTOR (s), STATIC_BLOCK) - : get_selected_block ()), - VAR_NAMESPACE, 0, &sym_symtab); - -symbol_found: /* We also jump here from inside the C++ class/namespace - code on finding a symbol of the form "A::B::C" */ - - if (sym != NULL) - { - if (SYMBOL_CLASS (sym) == LOC_BLOCK) - { - /* Arg is the name of a function */ - values.sals = (struct symtab_and_line *) - xmalloc (sizeof (struct symtab_and_line)); - values.sals[0] = find_function_start_sal (sym, funfirstline); - values.nelts = 1; - - /* Don't use the SYMBOL_LINE; if used at all it points to - the line containing the parameters or thereabouts, not - the first line of code. */ - - /* We might need a canonical line spec if it is a static - function. */ - if (s == 0) - { - struct blockvector *bv = BLOCKVECTOR (sym_symtab); - struct block *b = BLOCKVECTOR_BLOCK (bv, STATIC_BLOCK); - if (lookup_block_symbol (b, copy, VAR_NAMESPACE) != NULL) - build_canonical_line_spec (values.sals, copy, canonical); - } - return values; - } - else - { - if (funfirstline) - error ("\"%s\" is not a function", copy); - else if (SYMBOL_LINE (sym) != 0) - { - /* We know its line number. */ - values.sals = (struct symtab_and_line *) - xmalloc (sizeof (struct symtab_and_line)); - values.nelts = 1; - memset (&values.sals[0], 0, sizeof (values.sals[0])); - values.sals[0].symtab = sym_symtab; - values.sals[0].line = SYMBOL_LINE (sym); - return values; - } - else - /* This can happen if it is compiled with a compiler which doesn't - put out line numbers for variables. */ - /* FIXME: Shouldn't we just set .line and .symtab to zero - and return? For example, "info line foo" could print - the address. */ - error ("Line number not known for symbol \"%s\"", copy); - } - } - - msymbol = lookup_minimal_symbol (copy, NULL, NULL); - -minimal_symbol_found: /* We also jump here from the case for variables - that begin with '$' */ - - if (msymbol != NULL) - { - values.sals = (struct symtab_and_line *) - xmalloc (sizeof (struct symtab_and_line)); - values.sals[0] = find_pc_sect_line (SYMBOL_VALUE_ADDRESS (msymbol), - (struct sec *) 0, 0); - values.sals[0].section = SYMBOL_BFD_SECTION (msymbol); - if (funfirstline) - { - values.sals[0].pc += FUNCTION_START_OFFSET; - values.sals[0].pc = SKIP_PROLOGUE (values.sals[0].pc); - } - values.nelts = 1; - return values; - } - - if (!have_full_symbols () && - !have_partial_symbols () && !have_minimal_symbols ()) - error (no_symtab_msg); - - error ("Function \"%s\" not defined.", copy); - return values; /* for lint */ -} - -struct symtabs_and_lines -decode_line_spec (char *string, int funfirstline) -{ - struct symtabs_and_lines sals; - if (string == 0) - error ("Empty line specification."); - sals = decode_line_1 (&string, funfirstline, - current_source_symtab, current_source_line, - (char ***) NULL); - if (*string) - error ("Junk at end of line specification: %s", string); - return sals; -} - -/* Given a list of NELTS symbols in SYM_ARR, return a list of lines to - operate on (ask user if necessary). - If CANONICAL is non-NULL return a corresponding array of mangled names - as canonical line specs there. */ - -static struct symtabs_and_lines -decode_line_2 (struct symbol *sym_arr[], int nelts, int funfirstline, - char ***canonical) -{ - struct symtabs_and_lines values, return_values; - char *args, *arg1; - int i; - char *prompt; - char *symname; - struct cleanup *old_chain; - char **canonical_arr = (char **) NULL; - - values.sals = (struct symtab_and_line *) - alloca (nelts * sizeof (struct symtab_and_line)); - return_values.sals = (struct symtab_and_line *) - xmalloc (nelts * sizeof (struct symtab_and_line)); - old_chain = make_cleanup (free, return_values.sals); - - if (canonical) - { - canonical_arr = (char **) xmalloc (nelts * sizeof (char *)); - make_cleanup (free, canonical_arr); - memset (canonical_arr, 0, nelts * sizeof (char *)); - *canonical = canonical_arr; - } - - i = 0; - printf_unfiltered ("[0] cancel\n[1] all\n"); - while (i < nelts) - { - INIT_SAL (&return_values.sals[i]); /* initialize to zeroes */ - INIT_SAL (&values.sals[i]); - if (sym_arr[i] && SYMBOL_CLASS (sym_arr[i]) == LOC_BLOCK) - { - values.sals[i] = find_function_start_sal (sym_arr[i], funfirstline); - printf_unfiltered ("[%d] %s at %s:%d\n", - (i + 2), - SYMBOL_SOURCE_NAME (sym_arr[i]), - values.sals[i].symtab->filename, - values.sals[i].line); - } - else - printf_unfiltered ("?HERE\n"); - i++; - } - - if ((prompt = getenv ("PS2")) == NULL) - { - prompt = "> "; - } - args = command_line_input (prompt, 0, "overload-choice"); - - if (args == 0 || *args == 0) - error_no_arg ("one or more choice numbers"); - - i = 0; - while (*args) - { - int num; - - arg1 = args; - while (*arg1 >= '0' && *arg1 <= '9') - arg1++; - if (*arg1 && *arg1 != ' ' && *arg1 != '\t') - error ("Arguments must be choice numbers."); - - num = atoi (args); - - if (num == 0) - error ("canceled"); - else if (num == 1) - { - if (canonical_arr) - { - for (i = 0; i < nelts; i++) - { - if (canonical_arr[i] == NULL) - { - symname = SYMBOL_NAME (sym_arr[i]); - canonical_arr[i] = savestring (symname, strlen (symname)); - } - } - } - memcpy (return_values.sals, values.sals, - (nelts * sizeof (struct symtab_and_line))); - return_values.nelts = nelts; - discard_cleanups (old_chain); - return return_values; - } - - if (num >= nelts + 2) - { - printf_unfiltered ("No choice number %d.\n", num); - } - else - { - num -= 2; - if (values.sals[num].pc) - { - if (canonical_arr) - { - symname = SYMBOL_NAME (sym_arr[num]); - make_cleanup (free, symname); - canonical_arr[i] = savestring (symname, strlen (symname)); - } - return_values.sals[i++] = values.sals[num]; - values.sals[num].pc = 0; - } - else - { - printf_unfiltered ("duplicate request for %d ignored.\n", num); - } - } - - args = arg1; - while (*args == ' ' || *args == '\t') - args++; - } - return_values.nelts = i; - discard_cleanups (old_chain); - return return_values; -} /* Slave routine for sources_info. Force line breaks at ,'s. @@ -4559,6 +3335,19 @@ make_symbol_overload_list (struct symbol *fsym) /* End of overload resolution functions */ +struct symtabs_and_lines +decode_line_spec (char *string, int funfirstline) +{ + struct symtabs_and_lines sals; + if (string == 0) + error ("Empty line specification."); + sals = decode_line_1 (&string, funfirstline, + current_source_symtab, current_source_line, + (char ***) NULL); + if (*string) + error ("Junk at end of line specification: %s", string); + return sals; +} void _initialize_symtab (void) |