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- /* Symbol table lookup for the GNU debugger, GDB.
- Copyright 1986, 1987, 1988, 1989, 1990, 1991, 1992
- 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., 675 Mass Ave, Cambridge, MA 02139, USA. */
-
- #include "defs.h"
- #include "symtab.h"
- #include "gdbtypes.h"
- #include "gdbcore.h"
- #include "frame.h"
- #include "target.h"
- #include "value.h"
- #include "symfile.h"
- #include "objfiles.h"
- #include "gdbcmd.h"
- #include "call-cmds.h"
- #include "regex.h"
- #include "expression.h"
- #include "language.h"
-
- #include <obstack.h>
- #include <assert.h>
-
- #include <sys/types.h>
- #include <fcntl.h>
- #include <string.h>
- #include <sys/stat.h>
- #include <ctype.h>
-
- /* Prototypes for local functions */
-
- extern int
- find_methods PARAMS ((struct type *, char *, char **, struct symbol **));
-
- static void
- completion_list_add_symbol PARAMS ((char *));
-
- static struct symtabs_and_lines
- decode_line_2 PARAMS ((struct symbol *[], int, int));
-
- static void
- rbreak_command PARAMS ((char *, int));
-
- static void
- types_info PARAMS ((char *, int));
-
- static void
- functions_info PARAMS ((char *, int));
-
- static void
- variables_info PARAMS ((char *, int));
-
- static void
- sources_info PARAMS ((char *, int));
-
- static void
- list_symbols PARAMS ((char *, int, int));
-
- static void
- output_source_filename PARAMS ((char *, int *));
-
- static char *
- operator_chars PARAMS ((char *, char **));
-
- static int
- find_line_common PARAMS ((struct linetable *, int, int *));
-
- static struct partial_symbol *
- lookup_partial_symbol PARAMS ((struct partial_symtab *, const char *,
- int, enum namespace));
-
- static struct partial_symbol *
- lookup_demangled_partial_symbol PARAMS ((const struct partial_symtab *,
- const char *));
-
- static struct symbol *
- lookup_demangled_block_symbol PARAMS ((const struct block *, const char *));
-
- static struct symtab *
- lookup_symtab_1 PARAMS ((char *));
-
- /* */
-
- /* The single non-language-specific builtin type */
- struct type *builtin_type_error;
-
- /* Block in which the most recently searched-for symbol was found.
- Might be better to make this a parameter to lookup_symbol and
- value_of_this. */
-
- const struct block *block_found;
-
- char no_symtab_msg[] = "No symbol table is loaded. Use the \"file\" command.";
-
- /* Check for a symtab of a specific name; first in symtabs, then in
- psymtabs. *If* there is no '/' in the name, a match after a '/'
- in the symtab filename will also work. */
-
- static struct symtab *
- lookup_symtab_1 (name)
- char *name;
- {
- register struct symtab *s;
- register struct partial_symtab *ps;
- register char *slash;
- register int len;
- register struct objfile *objfile;
-
- ALL_SYMTABS (objfile, s)
- {
- if (strcmp (name, s->filename) == 0)
- {
- return (s);
- }
- }
-
- ALL_PSYMTABS (objfile, ps)
- {
- if (strcmp (name, ps -> filename) == 0)
- {
- if (ps -> readin)
- {
- error ("Internal: readin pst for `%s' found when no symtab found.", name);
- }
- return (PSYMTAB_TO_SYMTAB (ps));
- }
- }
-
- slash = strchr (name, '/');
- len = strlen (name);
-
- if (!slash)
- {
- ALL_SYMTABS (objfile, s)
- {
- int l = strlen (s->filename);
-
- if (l > len
- && s->filename[l - len -1] == '/'
- && (strcmp (s->filename + l - len, name) == 0))
- {
- return (s);
- }
- }
-
- ALL_PSYMTABS (objfile, ps)
- {
- int l = strlen (ps -> filename);
-
- if (l > len
- && ps -> filename[l - len - 1] == '/'
- && (strcmp (ps->filename + l - len, name) == 0))
- {
- if (ps -> readin)
- {
- error ("Internal: readin pst for `%s' found when no symtab found.", name);
- }
- return (PSYMTAB_TO_SYMTAB (ps));
- }
- }
- }
- return (NULL);
- }
-
- /* Lookup the symbol table of a source file named NAME. Try a couple
- of variations if the first lookup doesn't work. */
-
- struct symtab *
- lookup_symtab (name)
- char *name;
- {
- register struct symtab *s;
- register char *copy;
-
- s = lookup_symtab_1 (name);
- if (s) return s;
-
- /* If name not found as specified, see if adding ".c" helps. */
-
- copy = (char *) alloca (strlen (name) + 3);
- strcpy (copy, name);
- strcat (copy, ".c");
- s = lookup_symtab_1 (copy);
- if (s) return s;
-
- /* We didn't find anything; die. */
- return 0;
- }
-
- /* Lookup the partial symbol table of a source file named NAME. This
- only returns true on an exact match (ie. this semantics are
- different from lookup_symtab. */
-
- struct partial_symtab *
- lookup_partial_symtab (name)
- char *name;
- {
- register struct partial_symtab *pst;
- register struct objfile *objfile;
-
- ALL_PSYMTABS (objfile, pst)
- {
- if (strcmp (name, pst -> filename) == 0)
- {
- return (pst);
- }
- }
- return (NULL);
- }
-
- /* Demangle a GDB method stub type. */
- char *
- gdb_mangle_name (type, i, j)
- struct type *type;
- int i, j;
- {
- int mangled_name_len;
- char *mangled_name;
- struct fn_field *f = TYPE_FN_FIELDLIST1 (type, i);
- struct fn_field *method = &f[j];
- char *field_name = TYPE_FN_FIELDLIST_NAME (type, i);
- int is_constructor = strcmp(field_name, TYPE_NAME (type)) == 0;
-
- /* Need a new type prefix. */
- char *const_prefix = method->is_const ? "C" : "";
- char *volatile_prefix = method->is_volatile ? "V" : "";
- char *newname = type_name_no_tag (type);
- char buf[20];
- int len = strlen (newname);
-
- sprintf (buf, "__%s%s%d", const_prefix, volatile_prefix, len);
- mangled_name_len = ((is_constructor ? 0 : strlen (field_name))
- + strlen (buf) + len
- + strlen (TYPE_FN_FIELD_PHYSNAME (f, j))
- + 1);
-
- /* Only needed for GNU-mangled names. ANSI-mangled names
- work with the normal mechanisms. */
- if (OPNAME_PREFIX_P (field_name))
- {
- char *opname = cplus_mangle_opname (field_name + 3, 0);
- if (opname == NULL)
- error ("No mangling for \"%s\"", field_name);
- mangled_name_len += strlen (opname);
- mangled_name = (char *)xmalloc (mangled_name_len);
-
- strncpy (mangled_name, field_name, 3);
- mangled_name[3] = '\0';
- strcat (mangled_name, opname);
- }
- else
- {
- mangled_name = (char *)xmalloc (mangled_name_len);
- if (is_constructor)
- mangled_name[0] = '\0';
- else
- strcpy (mangled_name, field_name);
- }
- strcat (mangled_name, buf);
- strcat (mangled_name, newname);
- strcat (mangled_name, TYPE_FN_FIELD_PHYSNAME (f, j));
-
- return mangled_name;
- }
-
-
- /* Find which partial symtab on contains PC. Return 0 if none. */
-
- struct partial_symtab *
- find_pc_psymtab (pc)
- register CORE_ADDR pc;
- {
- register struct partial_symtab *pst;
- register struct objfile *objfile;
-
- ALL_PSYMTABS (objfile, pst)
- {
- if (pc >= pst -> textlow && pc < pst -> texthigh)
- {
- return (pst);
- }
- }
- return (NULL);
- }
-
- /* Find which partial symbol within a psymtab contains PC. Return 0
- if none. Check all psymtabs if PSYMTAB is 0. */
- struct partial_symbol *
- find_pc_psymbol (psymtab, pc)
- struct partial_symtab *psymtab;
- CORE_ADDR pc;
- {
- struct partial_symbol *best, *p;
- CORE_ADDR best_pc;
-
- if (!psymtab)
- psymtab = find_pc_psymtab (pc);
- if (!psymtab)
- return 0;
-
- best_pc = psymtab->textlow - 1;
-
- for (p = psymtab->objfile->static_psymbols.list + psymtab->statics_offset;
- (p - (psymtab->objfile->static_psymbols.list + psymtab->statics_offset)
- < psymtab->n_static_syms);
- p++)
- if (SYMBOL_NAMESPACE (p) == VAR_NAMESPACE
- && SYMBOL_CLASS (p) == LOC_BLOCK
- && pc >= SYMBOL_VALUE_ADDRESS (p)
- && SYMBOL_VALUE_ADDRESS (p) > best_pc)
- {
- best_pc = SYMBOL_VALUE_ADDRESS (p);
- best = p;
- }
- if (best_pc == psymtab->textlow - 1)
- return 0;
- return best;
- }
-
-
- /* Find the definition for a specified symbol name NAME
- in namespace NAMESPACE, visible from lexical block BLOCK.
- Returns the struct symbol pointer, or zero if no symbol is found.
- If SYMTAB is non-NULL, store the symbol table in which the
- symbol was found there, or NULL if not found.
- C++: if IS_A_FIELD_OF_THIS is nonzero on entry, check to see if
- NAME is a field of the current implied argument `this'. If so set
- *IS_A_FIELD_OF_THIS to 1, otherwise set it to zero.
- BLOCK_FOUND is set to the block in which NAME is found (in the case of
- a field of `this', value_of_this sets BLOCK_FOUND to the proper value.) */
-
- struct symbol *
- lookup_symbol (name, block, namespace, is_a_field_of_this, symtab)
- const char *name;
- register const struct block *block;
- const enum namespace namespace;
- int *is_a_field_of_this;
- struct symtab **symtab;
- {
- register struct symbol *sym;
- register struct symtab *s;
- register struct partial_symtab *ps;
- struct blockvector *bv;
- register struct objfile *objfile;
- register struct block *b;
- register struct minimal_symbol *msymbol;
-
- /* Search specified block and its superiors. */
-
- while (block != 0)
- {
- sym = lookup_block_symbol (block, name, namespace);
- if (sym)
- {
- block_found = block;
- if (symtab != NULL)
- {
- /* 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 (block)
- && BLOCK_END (b) > BLOCK_START (block))
- goto found;
- }
- found:
- *symtab = s;
- }
-
- return (sym);
- }
- block = BLOCK_SUPERBLOCK (block);
- }
-
- /* But that doesn't do any demangling for the STATIC_BLOCK.
- I'm not sure whether demangling is needed in the case of
- nested function in inner blocks; if so this needs to be changed.
-
- Don't need to mess with the psymtabs; if we have a block,
- that file is read in. If we don't, then we deal later with
- all the psymtab stuff that needs checking. */
- if (namespace == VAR_NAMESPACE && block != NULL)
- {
- struct block *b;
- /* Find the right symtab. */
- ALL_SYMTABS (objfile, s)
- {
- bv = BLOCKVECTOR (s);
- b = BLOCKVECTOR_BLOCK (bv, STATIC_BLOCK);
- if (BLOCK_START (b) <= BLOCK_START (block)
- && BLOCK_END (b) > BLOCK_START (block))
- {
- sym = lookup_demangled_block_symbol (b, name);
- if (sym)
- {
- block_found = b;
- if (symtab != NULL)
- *symtab = s;
- return sym;
- }
- }
- }
- }
-
-
- /* C++: If requested to do so by the caller,
- check to see if NAME is a field of `this'. */
- if (is_a_field_of_this)
- {
- struct value *v = value_of_this (0);
-
- *is_a_field_of_this = 0;
- if (v && check_field (v, name))
- {
- *is_a_field_of_this = 1;
- if (symtab != NULL)
- *symtab = NULL;
- return 0;
- }
- }
-
- /* Now search all global blocks. Do the symtab's first, then
- check the psymtab's */
-
- ALL_SYMTABS (objfile, s)
- {
- bv = BLOCKVECTOR (s);
- block = BLOCKVECTOR_BLOCK (bv, GLOBAL_BLOCK);
- sym = lookup_block_symbol (block, name, namespace);
- if (sym)
- {
- block_found = block;
- if (symtab != NULL)
- *symtab = s;
- return sym;
- }
- }
-
- /* Check for the possibility of the symbol being a global function
- that is stored in one of the minimal symbol tables. Eventually, all
- global symbols might be resolved in this way. */
-
- if (namespace == VAR_NAMESPACE)
- {
- msymbol = lookup_minimal_symbol (name, (struct objfile *) NULL);
-
- if (msymbol == NULL)
- {
- /* Test each minimal symbol to see if the minimal symbol's name
- is a C++ mangled name that matches a user visible name. */
-
- int matchcount = strlen (name);
- char *demangled;
-
- ALL_MSYMBOLS (objfile, msymbol)
- {
- if (strncmp (msymbol -> name, name, matchcount) == 0)
- {
- demangled = cplus_demangle (msymbol -> name, -1);
- if (demangled != NULL)
- {
- if (strcmp (demangled, name) == 0)
- {
- free (demangled);
- goto found_msym;
- }
- free (demangled);
- }
- }
- }
- }
-
- found_msym:
- if (msymbol != NULL)
- {
- s = find_pc_symtab (msymbol -> address);
- /* If S is NULL, there are no debug symbols for this file.
- Skip this stuff and check for matching static symbols below. */
- if (s != NULL)
- {
- bv = BLOCKVECTOR (s);
- block = BLOCKVECTOR_BLOCK (bv, GLOBAL_BLOCK);
- sym = lookup_block_symbol (block, msymbol -> name, namespace);
- /* We kept static functions in minimal symbol table as well as
- in static scope. We want to find them in the symbol table. */
- if (!sym) {
- block = BLOCKVECTOR_BLOCK (bv, STATIC_BLOCK);
- sym = lookup_block_symbol (block, msymbol -> name,
- namespace);
- }
-
- /* sym == 0 if symbol was found in the minimal symbol table
- but not in the symtab.
- Return 0 to use the msymbol definition of "foo_".
-
- This happens for Fortran "foo_" symbols,
- which are "foo" in the symtab.
-
- This can also happen if "asm" is used to make a
- regular symbol but not a debugging symbol, e.g.
- asm(".globl _main");
- asm("_main:");
- */
-
- if (symtab != NULL)
- *symtab = s;
- return sym;
- }
- }
- }
-
- ALL_PSYMTABS (objfile, ps)
- {
- if (!ps->readin && lookup_partial_symbol (ps, name, 1, namespace))
- {
- s = PSYMTAB_TO_SYMTAB(ps);
- bv = BLOCKVECTOR (s);
- block = BLOCKVECTOR_BLOCK (bv, GLOBAL_BLOCK);
- sym = lookup_block_symbol (block, name, namespace);
- if (!sym)
- error ("Internal: global symbol `%s' found in psymtab but not in symtab", name);
- if (symtab != NULL)
- *symtab = s;
- return sym;
- }
- }
-
- /* Now search all per-file blocks.
- Not strictly correct, but more useful than an error.
- Do the symtabs first, then check the psymtabs */
-
- ALL_SYMTABS (objfile, s)
- {
- bv = BLOCKVECTOR (s);
- block = BLOCKVECTOR_BLOCK (bv, STATIC_BLOCK);
- sym = lookup_block_symbol (block, name, namespace);
- if (sym)
- {
- block_found = block;
- if (symtab != NULL)
- *symtab = s;
- return sym;
- }
- }
-
- ALL_PSYMTABS (objfile, ps)
- {
- if (!ps->readin && lookup_partial_symbol (ps, name, 0, namespace))
- {
- s = PSYMTAB_TO_SYMTAB(ps);
- bv = BLOCKVECTOR (s);
- block = BLOCKVECTOR_BLOCK (bv, STATIC_BLOCK);
- sym = lookup_block_symbol (block, name, namespace);
- if (!sym)
- error ("Internal: static symbol `%s' found in psymtab but not in symtab", name);
- if (symtab != NULL)
- *symtab = s;
- return sym;
- }
- }
-
- /* Now search all per-file blocks for static mangled symbols.
- Do the symtabs first, then check the psymtabs. */
-
- if (namespace == VAR_NAMESPACE)
- {
- ALL_SYMTABS (objfile, s)
- {
- bv = BLOCKVECTOR (s);
- block = BLOCKVECTOR_BLOCK (bv, STATIC_BLOCK);
- sym = lookup_demangled_block_symbol (block, name);
- if (sym)
- {
- block_found = block;
- if (symtab != NULL)
- *symtab = s;
- return sym;
- }
- }
-
- ALL_PSYMTABS (objfile, ps)
- {
- if (!ps->readin && lookup_demangled_partial_symbol (ps, name))
- {
- s = PSYMTAB_TO_SYMTAB(ps);
- bv = BLOCKVECTOR (s);
- block = BLOCKVECTOR_BLOCK (bv, STATIC_BLOCK);
- sym = lookup_demangled_block_symbol (block, name);
- if (!sym)
- error ("Internal: mangled static symbol `%s' found in psymtab but not in symtab", name);
- if (symtab != NULL)
- *symtab = s;
- return sym;
- }
- }
- }
-
- if (symtab != NULL)
- *symtab = NULL;
- return 0;
- }
-
- /* Look for a static demangled symbol in block BLOCK. */
-
- static struct symbol *
- lookup_demangled_block_symbol (block, name)
- register const struct block *block;
- const char *name;
- {
- register int bot, top, inc;
- register struct symbol *sym;
-
- bot = 0;
- top = BLOCK_NSYMS (block);
- inc = name[0];
-
- while (bot < top)
- {
- sym = BLOCK_SYM (block, bot);
- if (SYMBOL_NAME (sym)[0] == inc
- && SYMBOL_NAMESPACE (sym) == VAR_NAMESPACE)
- {
- char *demangled = cplus_demangle(SYMBOL_NAME (sym), -1);
- if (demangled != NULL)
- {
- int cond = strcmp (demangled, name);
- free (demangled);
- if (!cond)
- return sym;
- }
- }
- bot++;
- }
-
- return 0;
- }
-
- /* Look, in partial_symtab PST, for static mangled symbol NAME. */
-
- static struct partial_symbol *
- lookup_demangled_partial_symbol (pst, name)
- const struct partial_symtab *pst;
- const char *name;
- {
- struct partial_symbol *start, *psym;
- int length = pst->n_static_syms;
- register int inc = name[0];
-
- if (!length)
- return (struct partial_symbol *) 0;
-
- start = pst->objfile->static_psymbols.list + pst->statics_offset;
- for (psym = start; psym < start + length; psym++)
- {
- if (SYMBOL_NAME (psym)[0] == inc
- && SYMBOL_NAMESPACE (psym) == VAR_NAMESPACE)
- {
- char *demangled = cplus_demangle(SYMBOL_NAME (psym), -1);
- if (demangled != NULL)
- {
- int cond = strcmp (demangled, name);
- free (demangled);
- if (!cond)
- return psym;
- }
- }
- }
-
- return (struct partial_symbol *) 0;
- }
-
- /* Look, in partial_symtab PST, for symbol NAME. Check the global
- symbols if GLOBAL, the static symbols if not */
-
- static struct partial_symbol *
- lookup_partial_symbol (pst, name, global, namespace)
- struct partial_symtab *pst;
- const char *name;
- int global;
- enum namespace namespace;
- {
- struct partial_symbol *start, *psym;
- int length = (global ? pst->n_global_syms : pst->n_static_syms);
-
- if (!length)
- return (struct partial_symbol *) 0;
-
- start = (global ?
- pst->objfile->global_psymbols.list + pst->globals_offset :
- pst->objfile->static_psymbols.list + pst->statics_offset );
-
- if (global) /* This means we can use a binary */
- /* search. */
- {
- struct partial_symbol *top, *bottom, *center;
-
- /* Binary search. This search is guaranteed to end with center
- pointing at the earliest partial symbol with the correct
- name. At that point *all* partial symbols with that name
- will be checked against the correct namespace. */
- bottom = start;
- top = start + length - 1;
- while (top > bottom)
- {
- center = bottom + (top - bottom) / 2;
-
- assert (center < top);
-
- if (strcmp (SYMBOL_NAME (center), name) >= 0)
- top = center;
- else
- bottom = center + 1;
- }
- assert (top == bottom);
-
- while (!strcmp (SYMBOL_NAME (top), name))
- {
- if (SYMBOL_NAMESPACE (top) == namespace)
- return top;
- top ++;
- }
- }
- else
- {
- /* Can't use a binary search */
- for (psym = start; psym < start + length; psym++)
- if (namespace == SYMBOL_NAMESPACE (psym)
- && !strcmp (name, SYMBOL_NAME (psym)))
- return psym;
- }
-
- return (struct partial_symbol *) 0;
- }
-
- /* Find the psymtab containing main(). */
-
- struct partial_symtab *
- find_main_psymtab ()
- {
- register struct partial_symtab *pst;
- register struct objfile *objfile;
-
- ALL_PSYMTABS (objfile, pst)
- {
- if (lookup_partial_symbol (pst, "main", 1, VAR_NAMESPACE))
- {
- return (pst);
- }
- }
- return (NULL);
- }
-
- /* Look for a symbol in block BLOCK. */
-
- struct symbol *
- lookup_block_symbol (block, name, namespace)
- register const struct block *block;
- const char *name;
- const enum namespace namespace;
- {
- register int bot, top, inc;
- register struct symbol *sym, *parameter_sym;
-
- top = BLOCK_NSYMS (block);
- bot = 0;
-
- /* If the blocks's symbols were sorted, start with a binary search. */
-
- if (BLOCK_SHOULD_SORT (block))
- {
- /* First, advance BOT to not far before
- the first symbol whose name is NAME. */
-
- while (1)
- {
- inc = (top - bot + 1);
- /* No need to keep binary searching for the last few bits worth. */
- if (inc < 4)
- break;
- inc = (inc >> 1) + bot;
- sym = BLOCK_SYM (block, inc);
- if (SYMBOL_NAME (sym)[0] < name[0])
- bot = inc;
- else if (SYMBOL_NAME (sym)[0] > name[0])
- top = inc;
- else if (strcmp (SYMBOL_NAME (sym), name) < 0)
- bot = inc;
- else
- top = inc;
- }
-
- /* Now scan forward until we run out of symbols,
- find one whose name is greater than NAME,
- or find one we want.
- If there is more than one symbol with the right name and namespace,
- we return the first one. dbxread.c is careful to make sure
- that if one is a register then it comes first. */
-
- top = BLOCK_NSYMS (block);
- while (bot < top)
- {
- sym = BLOCK_SYM (block, bot);
- inc = SYMBOL_NAME (sym)[0] - name[0];
- if (inc == 0)
- inc = strcmp (SYMBOL_NAME (sym), name);
- if (inc == 0 && SYMBOL_NAMESPACE (sym) == namespace)
- return sym;
- if (inc > 0)
- return 0;
- bot++;
- }
- return 0;
- }
-
- /* Here if block isn't sorted.
- This loop is equivalent to the loop above,
- but hacked greatly for speed.
-
- Note that parameter symbols do not always show up last in the
- list; this loop makes sure to take anything else other than
- parameter symbols first; it only uses parameter symbols as a
- last resort. Note that this only takes up extra computation
- time on a match. */
-
- parameter_sym = (struct symbol *) 0;
- top = BLOCK_NSYMS (block);
- inc = name[0];
- while (bot < top)
- {
- sym = BLOCK_SYM (block, bot);
- if (SYMBOL_NAME (sym)[0] == inc
- && !strcmp (SYMBOL_NAME (sym), name)
- && SYMBOL_NAMESPACE (sym) == namespace)
- {
- if (SYMBOL_CLASS (sym) == LOC_ARG
- || SYMBOL_CLASS (sym) == LOC_LOCAL_ARG
- || SYMBOL_CLASS (sym) == LOC_REF_ARG
- || SYMBOL_CLASS (sym) == LOC_REGPARM)
- parameter_sym = sym;
- else
- return sym;
- }
- bot++;
- }
- return parameter_sym; /* Will be 0 if not found. */
- }
-
- /* Return the symbol for the function which contains a specified
- lexical block, described by a struct block BL. */
-
- struct symbol *
- block_function (bl)
- struct block *bl;
- {
- while (BLOCK_FUNCTION (bl) == 0 && BLOCK_SUPERBLOCK (bl) != 0)
- bl = BLOCK_SUPERBLOCK (bl);
-
- return BLOCK_FUNCTION (bl);
- }
-
- /* Subroutine of find_pc_line */
-
- struct symtab *
- find_pc_symtab (pc)
- register CORE_ADDR pc;
- {
- register struct block *b;
- struct blockvector *bv;
- register struct symtab *s = 0;
- register struct partial_symtab *ps;
- register struct objfile *objfile;
-
- /* Search all symtabs for one whose file contains our pc */
-
- ALL_SYMTABS (objfile, s)
- {
- bv = BLOCKVECTOR (s);
- b = BLOCKVECTOR_BLOCK (bv, GLOBAL_BLOCK);
- if (BLOCK_START (b) <= pc
- && BLOCK_END (b) > pc)
- goto found;
- }
-
- if (!s)
- {
- ps = find_pc_psymtab (pc);
- if (ps && ps->readin)
- {
- printf_filtered ("(Internal error: pc 0x%x in read in psymtab, but not in symtab.)\n", pc);
- }
- if (ps)
- {
- s = PSYMTAB_TO_SYMTAB (ps);
- }
- }
-
- found:
- return (s);
- }
-
- /* Find the source file and line number for a given PC value.
- Return a structure containing a symtab pointer, a line number,
- and a pc range for the entire source line.
- The value's .pc field is NOT the specified pc.
- NOTCURRENT nonzero means, if specified pc is on a line boundary,
- use the line that ends there. Otherwise, in that case, the line
- that begins there is used. */
-
- struct symtab_and_line
- find_pc_line (pc, notcurrent)
- CORE_ADDR pc;
- int notcurrent;
- {
- struct symtab *s;
- register struct linetable *l;
- register int len;
- register int i;
- register struct linetable_entry *item;
- struct symtab_and_line val;
- struct blockvector *bv;
-
- /* Info on best line seen so far, and where it starts, and its file. */
-
- int best_line = 0;
- CORE_ADDR best_pc = 0;
- CORE_ADDR best_end = 0;
- struct symtab *best_symtab = 0;
-
- /* Store here the first line number
- of a file which contains the line at the smallest pc after PC.
- If we don't find a line whose range contains PC,
- we will use a line one less than this,
- with a range from the start of that file to the first line's pc. */
- int alt_line = 0;
- CORE_ADDR alt_pc = 0;
- struct symtab *alt_symtab = 0;
-
- /* Info on best line seen in this file. */
-
- int prev_line;
- CORE_ADDR prev_pc;
-
- /* Info on first line of this file. */
-
- int first_line;
- CORE_ADDR first_pc;
-
- /* If this pc is not from the current frame,
- it is the address of the end of a call instruction.
- Quite likely that is the start of the following statement.
- But what we want is the statement containing the instruction.
- Fudge the pc to make sure we get that. */
-
- if (notcurrent) pc -= 1;
-
- s = find_pc_symtab (pc);
- if (s == 0)
- {
- val.symtab = 0;
- val.line = 0;
- val.pc = pc;
- val.end = 0;
- return val;
- }
-
- bv = BLOCKVECTOR (s);
-
- /* Look at all the symtabs that share this blockvector.
- They all have the same apriori range, that we found was right;
- but they have different line tables. */
-
- for (; s && BLOCKVECTOR (s) == bv; s = s->next)
- {
- /* Find the best line in this symtab. */
- l = LINETABLE (s);
- if (!l)
- continue;
- len = l->nitems;
- prev_line = -1;
- first_line = -1;
- for (i = 0; i < len; i++)
- {
- item = &(l->item[i]);
-
- if (first_line < 0)
- {
- first_line = item->line;
- first_pc = item->pc;
- }
- /* Return the last line that did not start after PC. */
- if (pc >= item->pc)
- {
- prev_line = item->line;
- prev_pc = item->pc;
- }
- else
- break;
- }
-
- /* Is this file's best line closer than the best in the other files?
- If so, record this file, and its best line, as best so far. */
- if (prev_line >= 0 && prev_pc > best_pc)
- {
- best_pc = prev_pc;
- best_line = prev_line;
- best_symtab = s;
- /* If another line is in the linetable, and its PC is closer
- than the best_end we currently have, take it as best_end. */
- if (i < len && (best_end == 0 || best_end > item->pc))
- best_end = item->pc;
- }
- /* Is this file's first line closer than the first lines of other files?
- If so, record this file, and its first line, as best alternate. */
- if (first_line >= 0 && first_pc > pc
- && (alt_pc == 0 || first_pc < alt_pc))
- {
- alt_pc = first_pc;
- alt_line = first_line;
- alt_symtab = s;
- }
- }
- if (best_symtab == 0)
- {
- val.symtab = alt_symtab;
- val.line = alt_line - 1;
- val.pc = BLOCK_END (BLOCKVECTOR_BLOCK (bv, GLOBAL_BLOCK));
- val.end = alt_pc;
- }
- else
- {
- val.symtab = best_symtab;
- val.line = best_line;
- val.pc = best_pc;
- if (best_end && (alt_pc == 0 || best_end < alt_pc))
- val.end = best_end;
- else if (alt_pc)
- val.end = alt_pc;
- else
- val.end = BLOCK_END (BLOCKVECTOR_BLOCK (bv, GLOBAL_BLOCK));
- }
- return val;
- }
-
- /* Find the PC value for a given source file and line number.
- Returns zero for invalid line number.
- The source file is specified with a struct symtab. */
-
- CORE_ADDR
- find_line_pc (symtab, line)
- struct symtab *symtab;
- int line;
- {
- register struct linetable *l;
- register int ind;
- int dummy;
-
- if (symtab == 0)
- return 0;
- l = LINETABLE (symtab);
- ind = find_line_common(l, line, &dummy);
- return (ind >= 0) ? l->item[ind].pc : 0;
- }
-
- /* Find the range of pc values in a line.
- Store the starting pc of the line into *STARTPTR
- and the ending pc (start of next line) into *ENDPTR.
- Returns 1 to indicate success.
- Returns 0 if could not find the specified line. */
-
- int
- find_line_pc_range (symtab, thisline, startptr, endptr)
- struct symtab *symtab;
- int thisline;
- CORE_ADDR *startptr, *endptr;
- {
- register struct linetable *l;
- register int ind;
- int exact_match; /* did we get an exact linenumber match */
-
- if (symtab == 0)
- return 0;
-
- l = LINETABLE (symtab);
- ind = find_line_common (l, thisline, &exact_match);
- if (ind >= 0)
- {
- *startptr = l->item[ind].pc;
- /* If we have not seen an entry for the specified line,
- assume that means the specified line has zero bytes. */
- if (!exact_match || ind == l->nitems-1)
- *endptr = *startptr;
- else
- /* Perhaps the following entry is for the following line.
- It's worth a try. */
- if (ind+1 < l->nitems
- && l->item[ind+1].line == thisline + 1)
- *endptr = l->item[ind+1].pc;
- else
- *endptr = find_line_pc (symtab, thisline+1);
- return 1;
- }
-
- return 0;
- }
-
- /* Given a line table and a line number, return the index into the line
- table for the pc of the nearest line whose number is >= the specified one.
- Return -1 if none is found. The value is >= 0 if it is an index.
-
- Set *EXACT_MATCH nonzero if the value returned is an exact match. */
-
- static int
- find_line_common (l, lineno, exact_match)
- register struct linetable *l;
- register int lineno;
- int *exact_match;
- {
- register int i;
- register int len;
-
- /* BEST is the smallest linenumber > LINENO so far seen,
- or 0 if none has been seen so far.
- BEST_INDEX identifies the item for it. */
-
- int best_index = -1;
- int best = 0;
-
- if (lineno <= 0)
- return -1;
- if (l == 0)
- return -1;
-
- len = l->nitems;
- for (i = 0; i < len; i++)
- {
- register struct linetable_entry *item = &(l->item[i]);
-
- if (item->line == lineno)
- {
- *exact_match = 1;
- return i;
- }
-
- if (item->line > lineno && (best == 0 || item->line < best))
- {
- best = item->line;
- best_index = i;
- }
- }
-
- /* If we got here, we didn't get an exact match. */
-
- *exact_match = 0;
- return best_index;
- }
-
- int
- find_pc_line_pc_range (pc, startptr, endptr)
- CORE_ADDR pc;
- CORE_ADDR *startptr, *endptr;
- {
- struct symtab_and_line sal;
- sal = find_pc_line (pc, 0);
- *startptr = sal.pc;
- *endptr = sal.end;
- return sal.symtab != 0;
- }
-
- /* 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.
- Otherwise, return "". */
- static char *
- operator_chars (p, end)
- char *p;
- char **end;
- {
- *end = "";
- if (strncmp (p, "operator", 8))
- return *end;
- p += 8;
-
- /* Don't get faked out by `operator' being part of a longer
- identifier. */
- if (isalpha(*p) || *p == '_' || *p == '$' || *p == '\0')
- return *end;
-
- /* Allow some whitespace between `operator' and the operator symbol. */
- while (*p == ' ' || *p == '\t')
- p++;
-
- /* Recognize 'operator TYPENAME'. */
-
- if (isalpha(*p) || *p == '_' || *p == '$')
- {
- register char *q = p+1;
- while (isalnum(*q) || *q == '_' || *q == '$')
- q++;
- *end = q;
- return p;
- }
-
- switch (*p)
- {
- case '!':
- case '=':
- case '*':
- case '/':
- case '%':
- case '^':
- if (p[1] == '=')
- *end = p+2;
- else
- *end = p+1;
- return p;
- case '<':
- case '>':
- case '+':
- case '-':
- case '&':
- case '|':
- if (p[1] == '=' || p[1] == p[0])
- *end = p+2;
- else
- *end = p+1;
- return p;
- case '~':
- case ',':
- *end = p+1;
- return p;
- case '(':
- if (p[1] != ')')
- error ("`operator ()' must be specified without whitespace in `()'");
- *end = p+2;
- return p;
- case '?':
- if (p[1] != ':')
- error ("`operator ?:' must be specified without whitespace in `?:'");
- *end = p+2;
- return p;
- case '[':
- if (p[1] != ']')
- error ("`operator []' must be specified without whitespace in `[]'");
- *end = p+2;
- return p;
- default:
- error ("`operator %s' not supported", p);
- break;
- }
- *end = "";
- return *end;
- }
-
- /* Recursive helper function for decode_line_1.
- * Look for methods named NAME in type T.
- * Return number of matches.
- * Put matches in PHYSNAMES and SYM_ARR (which better be big enough!).
- * These allocations seem to define "big enough":
- * sym_arr = (struct symbol **) alloca(TYPE_NFN_FIELDS_TOTAL (t) * sizeof(struct symbol*));
- * physnames = (char **) alloca (TYPE_NFN_FIELDS_TOTAL (t) * sizeof(char*));
- */
-
- int
- find_methods (t, name, physnames, sym_arr)
- struct type *t;
- char *name;
- char **physnames;
- 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 prevents core dumps, but is just a workaround
- because we might not find the function in
- certain cases, such as
- struct D {virtual int f();}
- struct C : D {virtual int g();}
- (in this case g++ 1.35.1- does not put out a name
- for D as such, it defines type 19 (for example) in
- the same stab as C, and then does a
- .stabs "D:T19" and a .stabs "D:t19".
- Thus
- "break C::f" should not be looking for field f in
- the class named D,
- but just for the field f in the baseclasses of C
- (no matter what their names).
-
- However, I don't know how to replace the code below
- that depends on knowing the name of D. */
- if (class_name
- && (sym_class = lookup_symbol (class_name,
- (struct block *)NULL,
- STRUCT_NAMESPACE,
- (int *)NULL,
- (struct symtab **)NULL)))
- {
- int method_counter;
- t = SYMBOL_TYPE (sym_class);
- for (method_counter = TYPE_NFN_FIELDS (t) - 1;
- method_counter >= 0;
- --method_counter)
- {
- int field_counter;
- struct fn_field *f = TYPE_FN_FIELDLIST1 (t, method_counter);
-
- char *method_name = TYPE_FN_FIELDLIST_NAME (t, method_counter);
- if (!strcmp (name, method_name))
- /* Find all the fields with that name. */
- for (field_counter = TYPE_FN_FIELDLIST_LENGTH (t, method_counter) - 1;
- field_counter >= 0;
- --field_counter)
- {
- char *phys_name;
- if (TYPE_FN_FIELD_STUB (f, field_counter))
- check_stub_method (t, method_counter, field_counter);
- phys_name = TYPE_FN_FIELD_PHYSNAME (f, field_counter);
- physnames[i1] = (char*) alloca (strlen (phys_name) + 1);
- strcpy (physnames[i1], phys_name);
- sym_arr[i1] = lookup_symbol (phys_name,
- SYMBOL_BLOCK_VALUE (sym_class),
- VAR_NAMESPACE,
- (int *) NULL,
- (struct symtab **) NULL);
- if (sym_arr[i1]) i1++;
- else
- {
- fputs_filtered("(Cannot find method ", stdout);
- fputs_demangled(phys_name, stdout, 0);
- fputs_filtered(" - possibly inlined.)\n", stdout);
- }
- }
- }
- }
- /* Only search baseclasses if there is no match yet,
- * since names in derived classes override those in baseclasses.
- */
- if (i1)
- return i1;
- for (ibase = 0; ibase < TYPE_N_BASECLASSES (t); ibase++)
- i1 += find_methods(TYPE_BASECLASS(t, ibase), name,
- physnames + i1, sym_arr + i1);
- return i1;
- }
-
- /* 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.
-
- 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.
-
- 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.
-
- 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. */
-
- struct symtabs_and_lines
- decode_line_1 (argptr, funfirstline, default_symtab, default_line)
- char **argptr;
- int funfirstline;
- struct symtab *default_symtab;
- int default_line;
- {
- struct symtabs_and_lines values;
- struct symtab_and_line val;
- register char *p, *p1;
- char *q, *q1;
- 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;
- struct symbol **sym_arr;
- struct type *t;
- char **physnames;
-
- /* 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;
- return values;
- }
-
- /* Maybe arg is FILE : LINENUM or FILE : FUNCTION */
-
- s = 0;
-
- for (p = *argptr; *p; p++)
- {
- if (p[0] == ':' || p[0] == ' ' || p[0] == '\t')
- break;
- }
- while (p[0] == ' ' || p[0] == '\t') p++;
-
- if (p[0] == ':')
- {
-
- /* C++ */
- if (p[1] ==':')
- {
- /* Extract the class name. */
- p1 = p;
- while (p != *argptr && p[-1] == ' ') --p;
- copy = (char *) alloca (p - *argptr + 1);
- bcopy (*argptr, copy, p - *argptr);
- copy[p - *argptr] = 0;
-
- /* Discard the class name from the arg. */
- p = p1 + 2;
- while (*p == ' ' || *p == '\t') p++;
- *argptr = p;
-
- sym_class = lookup_symbol (copy, 0, STRUCT_NAMESPACE, 0,
- (struct symtab **)NULL);
-
- if (sym_class &&
- ( TYPE_CODE (SYMBOL_TYPE (sym_class)) == TYPE_CODE_STRUCT
- || TYPE_CODE (SYMBOL_TYPE (sym_class)) == TYPE_CODE_UNION))
- {
- /* Arg token is not digits => try it as a function name
- Find the next token (everything up to end or next whitespace). */
- 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, 1);
- if (opname == NULL)
- error ("No mangling for \"%s\"", tmp);
- copy = (char*) alloca (3 + strlen(opname));
- sprintf (copy, "__%s", opname);
- p = q1;
- }
- else
- {
- copy = (char *) alloca (p - *argptr + 1 + (q1 - q));
- bcopy (*argptr, copy, p - *argptr);
- copy[p - *argptr] = '\0';
- }
-
- /* no line number may be specified */
- while (*p == ' ' || *p == '\t') p++;
- *argptr = p;
-
- sym = 0;
- i1 = 0; /* counter for the symbol array */
- t = SYMBOL_TYPE (sym_class);
- sym_arr = (struct symbol **) alloca(TYPE_NFN_FIELDS_TOTAL (t) * sizeof(struct symbol*));
- physnames = (char **) alloca (TYPE_NFN_FIELDS_TOTAL (t) * sizeof(char*));
-
- if (destructor_name_p (copy, t))
- {
- /* destructors are a special case. */
- struct fn_field *f = TYPE_FN_FIELDLIST1 (t, 0);
- int len = TYPE_FN_FIELDLIST_LENGTH (t, 0) - 1;
- char *phys_name = TYPE_FN_FIELD_PHYSNAME (f, len);
- physnames[i1] = (char *)alloca (strlen (phys_name) + 1);
- strcpy (physnames[i1], phys_name);
- sym_arr[i1] =
- lookup_symbol (phys_name, SYMBOL_BLOCK_VALUE (sym_class),
- VAR_NAMESPACE, 0, (struct symtab **)NULL);
- if (sym_arr[i1]) i1++;
- }
- else
- i1 = find_methods (t, copy, physnames, sym_arr);
- if (i1 == 1)
- {
- /* There is exactly one field with that name. */
- sym = sym_arr[0];
-
- if (sym && SYMBOL_CLASS (sym) == LOC_BLOCK)
- {
- /* Arg is the name of a function */
- pc = BLOCK_START (SYMBOL_BLOCK_VALUE (sym)) + FUNCTION_START_OFFSET;
- if (funfirstline)
- SKIP_PROLOGUE (pc);
- 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 = (values.sals[0].end && values.sals[0].pc != pc) ? values.sals[0].end : pc;
- }
- 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);
- }
- 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;
- if (tmp[0] == '~')
- error ("The class `%s' does not have destructor defined",
- sym_class->name);
- else
- error ("The class %s does not have any method named %s",
- sym_class->name, tmp);
- }
- }
- else
- /* The quotes are important if copy is empty. */
- error("No class, struct, or union named \"%s\"", copy );
- }
- /* end of C++ */
-
-
- /* Extract the file name. */
- p1 = p;
- while (p != *argptr && p[-1] == ' ') --p;
- copy = (char *) alloca (p - *argptr + 1);
- bcopy (*argptr, copy, 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;
- }
-
- /* 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) */
-
- p = *argptr;
- if (*p == '-' || *p == '+') p++;
- while (*p >= '0' && *p <= '9')
- p++;
-
- if (p != *argptr && (*p == 0 || *p == ' ' || *p == '\t' || *p == ','))
- {
- /* We found a token consisting of all digits -- at least one digit. */
- enum sign {none, plus, minus} sign = none;
-
- /* 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 (p == *argptr)
- val.line = 5;
- if (s == 0)
- val.line = default_line + val.line;
- break;
- case minus:
- if (p == *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 (*p == ' ' || *p == '\t') p++;
- *argptr = p;
- if (s == 0)
- s = default_symtab;
- 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;
- return values;
- }
-
- /* Arg token is not digits => try it as a variable name
- Find the next token (everything up to end or next whitespace). */
-
- p = *argptr;
- while (*p && *p != ' ' && *p != '\t' && *p != ',') p++;
- copy = (char *) alloca (p - *argptr + 1);
- bcopy (*argptr, copy, p - *argptr);
- copy[p - *argptr] = 0;
- while (*p == ' ' || *p == '\t') p++;
- *argptr = p;
-
- /* 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);
-
- if (sym != NULL)
- {
- if (SYMBOL_CLASS (sym) == LOC_BLOCK)
- {
- /* Arg is the name of a function */
- pc = BLOCK_START (SYMBOL_BLOCK_VALUE (sym)) + FUNCTION_START_OFFSET;
- if (funfirstline)
- SKIP_PROLOGUE (pc);
- val = find_pc_line (pc, 0);
- #ifdef PROLOGUE_FIRSTLINE_OVERLAP
- /* Convex: no need to suppress code on first line, if any */
- val.pc = pc;
- #else
- /* If SKIP_PROLOGUE left us in mid-line, and the next line is still
- part of the same function:
- advance to next line,
- recalculate its line number (might not be N+1). */
- if (val.pc != pc && val.end &&
- lookup_minimal_symbol_by_pc (pc) == lookup_minimal_symbol_by_pc (val.end)) {
- pc = val.end; /* First pc of next line */
- val = find_pc_line (pc, 0);
- }
- val.pc = pc;
- #endif
- values.sals = (struct symtab_and_line *)xmalloc (sizeof (struct symtab_and_line));
- values.sals[0] = val;
- values.nelts = 1;
-
- /* I think this is always the same as the line that
- we calculate above, but the general principle is
- "trust the symbols more than stuff like
- SKIP_PROLOGUE". */
- if (SYMBOL_LINE (sym) != 0)
- values.sals[0].line = SYMBOL_LINE (sym);
-
- return values;
- }
- 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;
- bzero (&values.sals[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. */
- error ("Line number not known for symbol \"%s\"", copy);
- }
-
- msymbol = lookup_minimal_symbol (copy, (struct objfile *) NULL);
- if (msymbol != NULL)
- {
- val.symtab = 0;
- val.line = 0;
- val.pc = msymbol -> address + FUNCTION_START_OFFSET;
- if (funfirstline)
- SKIP_PROLOGUE (val.pc);
- values.sals = (struct symtab_and_line *)xmalloc (sizeof (struct symtab_and_line));
- values.sals[0] = val;
- 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 (string, funfirstline)
- 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);
- if (*string)
- error ("Junk at end of line specification: %s", string);
- return sals;
- }
-
- /* Given a list of NELTS symbols in sym_arr (with corresponding
- mangled names in physnames), return a list of lines to operate on
- (ask user if necessary). */
- static struct symtabs_and_lines
- decode_line_2 (sym_arr, nelts, funfirstline)
- struct symbol *sym_arr[];
- int nelts;
- int funfirstline;
- {
- struct symtabs_and_lines values, return_values;
- register CORE_ADDR pc;
- char *args, *arg1;
- int i;
- char *prompt;
-
- 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));
-
- i = 0;
- printf("[0] cancel\n[1] all\n");
- while (i < nelts)
- {
- if (sym_arr[i] && SYMBOL_CLASS (sym_arr[i]) == LOC_BLOCK)
- {
- /* Arg is the name of a function */
- pc = BLOCK_START (SYMBOL_BLOCK_VALUE (sym_arr[i]))
- + FUNCTION_START_OFFSET;
- if (funfirstline)
- SKIP_PROLOGUE (pc);
- values.sals[i] = find_pc_line (pc, 0);
- values.sals[i].pc = (values.sals[i].end && values.sals[i].pc != pc) ?
- values.sals[i].end : pc;
- printf("[%d] file:%s; line number:%d\n",
- (i+2), values.sals[i].symtab->filename, values.sals[i].line);
- }
- else printf ("?HERE\n");
- i++;
- }
-
- if ((prompt = getenv ("PS2")) == NULL)
- {
- prompt = ">";
- }
- printf("%s ",prompt);
- fflush(stdout);
-
- args = command_line_input ((char *) NULL, 0);
-
- if (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 ("cancelled");
- else if (num == 1)
- {
- bcopy (values.sals, return_values.sals, (nelts * sizeof(struct symtab_and_line)));
- return_values.nelts = nelts;
- return return_values;
- }
-
- if (num > nelts + 2)
- {
- printf ("No choice number %d.\n", num);
- }
- else
- {
- num -= 2;
- if (values.sals[num].pc)
- {
- return_values.sals[i++] = values.sals[num];
- values.sals[num].pc = 0;
- }
- else
- {
- printf ("duplicate request for %d ignored.\n", num);
- }
- }
-
- args = arg1;
- while (*args == ' ' || *args == '\t') args++;
- }
- return_values.nelts = i;
- return return_values;
- }
-
-
- /* Slave routine for sources_info. Force line breaks at ,'s.
- NAME is the name to print and *FIRST is nonzero if this is the first
- name printed. Set *FIRST to zero. */
- static void
- output_source_filename (name, first)
- char *name;
- int *first;
- {
- static unsigned int column;
- /* Table of files printed so far. Since a single source file can
- result in several partial symbol tables, we need to avoid printing
- it more than once. Note: if some of the psymtabs are read in and
- some are not, it gets printed both under "Source files for which
- symbols have been read" and "Source files for which symbols will
- be read in on demand". I consider this a reasonable way to deal
- with the situation. I'm not sure whether this can also happen for
- symtabs; it doesn't hurt to check. */
- static char **tab = NULL;
- /* Allocated size of tab in elements.
- Start with one 256-byte block (when using GNU malloc.c).
- 24 is the malloc overhead when range checking is in effect. */
- static int tab_alloc_size = (256 - 24) / sizeof (char *);
- /* Current size of tab in elements. */
- static int tab_cur_size;
-
- char **p;
-
- if (*first)
- {
- if (tab == NULL)
- tab = (char **) xmalloc (tab_alloc_size * sizeof (*tab));
- tab_cur_size = 0;
- }
-
- /* Is NAME in tab? */
- for (p = tab; p < tab + tab_cur_size; p++)
- if (strcmp (*p, name) == 0)
- /* Yes; don't print it again. */
- return;
- /* No; add it to tab. */
- if (tab_cur_size == tab_alloc_size)
- {
- tab_alloc_size *= 2;
- tab = (char **) xrealloc ((char *) tab, tab_alloc_size * sizeof (*tab));
- }
- tab[tab_cur_size++] = name;
-
- if (*first)
- {
- column = 0;
- *first = 0;
- }
- else
- {
- printf_filtered (",");
- column++;
- }
-
- if (column != 0 && column + strlen (name) >= 70)
- {
- printf_filtered ("\n");
- column = 0;
- }
- else if (column != 0)
- {
- printf_filtered (" ");
- column++;
- }
- fputs_filtered (name, stdout);
- column += strlen (name);
- }
-
- static void
- sources_info (ignore, from_tty)
- char *ignore;
- int from_tty;
- {
- register struct symtab *s;
- register struct partial_symtab *ps;
- register struct objfile *objfile;
- int first;
-
- if (!have_full_symbols () && !have_partial_symbols ())
- {
- error (no_symtab_msg);
- }
-
- printf_filtered ("Source files for which symbols have been read in:\n\n");
-
- first = 1;
- ALL_SYMTABS (objfile, s)
- {
- output_source_filename (s -> filename, &first);
- }
- printf_filtered ("\n\n");
-
- printf_filtered ("Source files for which symbols will be read in on demand:\n\n");
-
- first = 1;
- ALL_PSYMTABS (objfile, ps)
- {
- if (!ps->readin)
- {
- output_source_filename (ps -> filename, &first);
- }
- }
- printf_filtered ("\n");
- }
-
- static int
- name_match(name)
- char *name;
- {
- char *demangled = cplus_demangle(name, -1);
- if (demangled != NULL)
- {
- int cond = re_exec (demangled);
- free (demangled);
- return cond;
- }
- return re_exec(name);
- }
- #define NAME_MATCH(NAME) name_match(NAME)
-
- /* List all symbols (if REGEXP is 0) or all symbols matching REGEXP.
- If CLASS is zero, list all symbols except functions and type names.
- If CLASS is 1, list only functions.
- If CLASS is 2, list only type names.
- If CLASS is 3, list only method names.
-
- BPT is non-zero if we should set a breakpoint at the functions
- we find. */
-
- static void
- list_symbols (regexp, class, bpt)
- char *regexp;
- int class;
- int bpt;
- {
- register struct symtab *s;
- register struct partial_symtab *ps;
- register struct blockvector *bv;
- struct blockvector *prev_bv = 0;
- register struct block *b;
- register int i, j;
- register struct symbol *sym;
- struct partial_symbol *psym;
- struct objfile *objfile;
- struct minimal_symbol *msymbol;
- char *val;
- static char *classnames[]
- = {"variable", "function", "type", "method"};
- int found_in_file = 0;
- int found_misc = 0;
- static enum minimal_symbol_type types[]
- = {mst_data, mst_text, mst_abs, mst_unknown};
- static enum minimal_symbol_type types2[]
- = {mst_bss, mst_text, mst_abs, mst_unknown};
- enum minimal_symbol_type ourtype = types[class];
- enum minimal_symbol_type ourtype2 = types2[class];
-
- if (regexp)
- {
- /* Make sure spacing is right for C++ operators.
- This is just a courtesy to make the matching less sensitive
- to how many spaces the user leaves between 'operator'
- and <TYPENAME> or <OPERATOR>. */
- char *opend;
- char *opname = operator_chars (regexp, &opend);
- if (*opname)
- {
- int fix = -1; /* -1 means ok; otherwise number of spaces needed. */
- if (isalpha(*opname) || *opname == '_' || *opname == '$')
- {
- /* There should 1 space between 'operator' and 'TYPENAME'. */
- if (opname[-1] != ' ' || opname[-2] == ' ')
- fix = 1;
- }
- else
- {
- /* There should 0 spaces between 'operator' and 'OPERATOR'. */
- if (opname[-1] == ' ')
- fix = 0;
- }
- /* If wrong number of spaces, fix it. */
- if (fix >= 0)
- {
- char *tmp = (char*) alloca(opend-opname+10);
- sprintf(tmp, "operator%.*s%s", fix, " ", opname);
- regexp = tmp;
- }
- }
-
- if (0 != (val = re_comp (regexp)))
- error ("Invalid regexp (%s): %s", val, regexp);
- }
-
- /* Search through the partial symtabs *first* for all symbols
- matching the regexp. That way we don't have to reproduce all of
- the machinery below. */
-
- ALL_PSYMTABS (objfile, ps)
- {
- struct partial_symbol *bound, *gbound, *sbound;
- int keep_going = 1;
-
- if (ps->readin) continue;
-
- gbound = objfile->global_psymbols.list + ps->globals_offset + ps->n_global_syms;
- sbound = objfile->static_psymbols.list + ps->statics_offset + ps->n_static_syms;
- bound = gbound;
-
- /* Go through all of the symbols stored in a partial
- symtab in one loop. */
- psym = objfile->global_psymbols.list + ps->globals_offset;
- while (keep_going)
- {
- if (psym >= bound)
- {
- if (bound == gbound && ps->n_static_syms != 0)
- {
- psym = objfile->static_psymbols.list + ps->statics_offset;
- bound = sbound;
- }
- else
- keep_going = 0;
- continue;
- }
- else
- {
- QUIT;
-
- /* If it would match (logic taken from loop below)
- load the file and go on to the next one */
- if ((regexp == 0 || NAME_MATCH (SYMBOL_NAME (psym)))
- && ((class == 0 && SYMBOL_CLASS (psym) != LOC_TYPEDEF
- && SYMBOL_CLASS (psym) != LOC_BLOCK)
- || (class == 1 && SYMBOL_CLASS (psym) == LOC_BLOCK)
- || (class == 2 && SYMBOL_CLASS (psym) == LOC_TYPEDEF)
- || (class == 3 && SYMBOL_CLASS (psym) == LOC_BLOCK)))
- {
- (void) PSYMTAB_TO_SYMTAB(ps);
- keep_going = 0;
- }
- }
- psym++;
- }
- }
-
- /* Here, we search through the minimal symbol tables for functions that
- match, and call find_pc_symtab on them to force their symbols to
- be read. The symbol will then be found during the scan of symtabs
- below. If find_pc_symtab fails, set found_misc so that we will
- rescan to print any matching symbols without debug info. */
-
- if (class == 1)
- {
- ALL_MSYMBOLS (objfile, msymbol)
- {
- if (msymbol -> type == ourtype || msymbol -> type == ourtype2)
- {
- if (regexp == 0 || NAME_MATCH (msymbol -> name))
- {
- if (0 == find_pc_symtab (msymbol -> address))
- {
- found_misc = 1;
- }
- }
- }
- }
- }
-
- /* Printout here so as to get after the "Reading in symbols"
- messages which will be generated above. */
- if (!bpt)
- printf_filtered (regexp
- ? "All %ss matching regular expression \"%s\":\n"
- : "All defined %ss:\n",
- classnames[class],
- regexp);
-
- ALL_SYMTABS (objfile, s)
- {
- found_in_file = 0;
- bv = BLOCKVECTOR (s);
- /* Often many files share a blockvector.
- Scan each blockvector only once so that
- we don't get every symbol many times.
- It happens that the first symtab in the list
- for any given blockvector is the main file. */
- if (bv != prev_bv)
- for (i = GLOBAL_BLOCK; i <= STATIC_BLOCK; i++)
- {
- b = BLOCKVECTOR_BLOCK (bv, i);
- /* Skip the sort if this block is always sorted. */
- if (!BLOCK_SHOULD_SORT (b))
- sort_block_syms (b);
- for (j = 0; j < BLOCK_NSYMS (b); j++)
- {
- QUIT;
- sym = BLOCK_SYM (b, j);
- if ((regexp == 0 || NAME_MATCH (SYMBOL_NAME (sym)))
- && ((class == 0 && SYMBOL_CLASS (sym) != LOC_TYPEDEF
- && SYMBOL_CLASS (sym) != LOC_BLOCK)
- || (class == 1 && SYMBOL_CLASS (sym) == LOC_BLOCK)
- || (class == 2 && SYMBOL_CLASS (sym) == LOC_TYPEDEF)
- || (class == 3 && SYMBOL_CLASS (sym) == LOC_BLOCK)))
- {
- if (bpt)
- {
- /* Set a breakpoint here, if it's a function */
- if (class == 1)
- break_command (SYMBOL_NAME(sym), 0);
- }
- else if (!found_in_file)
- {
- fputs_filtered ("\nFile ", stdout);
- fputs_filtered (s->filename, stdout);
- fputs_filtered (":\n", stdout);
- }
- found_in_file = 1;
-
- if (class != 2 && i == STATIC_BLOCK)
- printf_filtered ("static ");
-
- /* Typedef that is not a C++ class */
- if (class == 2
- && SYMBOL_NAMESPACE (sym) != STRUCT_NAMESPACE)
- typedef_print (SYMBOL_TYPE(sym), sym, stdout);
- /* variable, func, or typedef-that-is-c++-class */
- else if (class < 2 ||
- (class == 2 &&
- SYMBOL_NAMESPACE(sym) == STRUCT_NAMESPACE))
- {
- type_print (SYMBOL_TYPE (sym),
- (SYMBOL_CLASS (sym) == LOC_TYPEDEF
- ? "" : SYMBOL_NAME (sym)),
- stdout, 0);
-
- printf_filtered (";\n");
- }
- else
- {
- # if 0
- /* FIXME, why is this zapped out? */
- char buf[1024];
- type_print_base (TYPE_FN_FIELD_TYPE(t, i), stdout, 0, 0);
- type_print_varspec_prefix (TYPE_FN_FIELD_TYPE(t, i), stdout, 0);
- sprintf (buf, " %s::", type_name_no_tag (t));
- type_print_method_args (TYPE_FN_FIELD_ARGS (t, i), buf, name, stdout);
- # endif
- }
- }
- }
- }
- prev_bv = bv;
- }
-
- /* If there are no eyes, avoid all contact. I mean, if there are
- no debug symbols, then print directly from the msymbol_vector. */
-
- if (found_misc || class != 1)
- {
- found_in_file = 0;
- ALL_MSYMBOLS (objfile, msymbol)
- {
- if (msymbol -> type == ourtype || msymbol -> type == ourtype2)
- {
- if (regexp == 0 || NAME_MATCH (msymbol -> name))
- {
- /* Functions: Look up by address. */
- if (class != 1 &&
- (find_pc_symtab (msymbol -> address) != NULL))
- {
- /* Variables/Absolutes: Look up by name */
- if (lookup_symbol (msymbol -> name,
- (struct block *) 0, VAR_NAMESPACE, 0,
- (struct symtab **) 0) == NULL)
- {
- if (!found_in_file)
- {
- printf_filtered ("\nNon-debugging symbols:\n");
- found_in_file = 1;
- }
- printf_filtered (" %08x %s\n",
- msymbol -> address,
- msymbol -> name);
- }
- }
- }
- }
- }
- }
- }
-
- static void
- variables_info (regexp, from_tty)
- char *regexp;
- int from_tty;
- {
- list_symbols (regexp, 0, 0);
- }
-
- static void
- functions_info (regexp, from_tty)
- char *regexp;
- int from_tty;
- {
- list_symbols (regexp, 1, 0);
- }
-
- static void
- types_info (regexp, from_tty)
- char *regexp;
- int from_tty;
- {
- list_symbols (regexp, 2, 0);
- }
-
- #if 0
- /* Tiemann says: "info methods was never implemented." */
- static void
- methods_info (regexp)
- char *regexp;
- {
- list_symbols (regexp, 3, 0);
- }
- #endif /* 0 */
-
- /* Breakpoint all functions matching regular expression. */
- static void
- rbreak_command (regexp, from_tty)
- char *regexp;
- int from_tty;
- {
- list_symbols (regexp, 1, 1);
- }
-
-
- /* Return Nonzero if block a is lexically nested within block b,
- or if a and b have the same pc range.
- Return zero otherwise. */
- int
- contained_in (a, b)
- struct block *a, *b;
- {
- if (!a || !b)
- return 0;
- return BLOCK_START (a) >= BLOCK_START (b)
- && BLOCK_END (a) <= BLOCK_END (b);
- }
-
-
- /* Helper routine for make_symbol_completion_list. */
-
- int return_val_size, return_val_index;
- char **return_val;
-
- static void
- completion_list_add_symbol (symname)
- char *symname;
- {
- if (return_val_index + 3 > return_val_size)
- return_val = (char **) xrealloc ((char *) return_val,
- (return_val_size *= 2) * sizeof (char *));
-
- return_val[return_val_index] =
- (char *)xmalloc (1 + strlen (symname));
-
- strcpy (return_val[return_val_index], symname);
-
- return_val[++return_val_index] = (char *)NULL;
- }
-
- /* Return a NULL terminated array of all symbols (regardless of class) which
- begin by matching TEXT. If the answer is no symbols, then the return value
- is an array which contains only a NULL pointer.
-
- Problem: All of the symbols have to be copied because readline
- frees them. I'm not going to worry about this; hopefully there
- won't be that many. */
-
- char **
- make_symbol_completion_list (text)
- char *text;
- {
- register struct symtab *s;
- register struct partial_symtab *ps;
- register struct minimal_symbol *msymbol;
- register struct objfile *objfile;
- register struct block *b, *surrounding_static_block = 0;
- register int i, j;
- struct partial_symbol *psym;
-
- int text_len = strlen (text);
- return_val_size = 100;
- return_val_index = 0;
- return_val =
- (char **)xmalloc ((1 + return_val_size) *sizeof (char *));
- return_val[0] = (char *)NULL;
-
- /* Look through the partial symtabs for all symbols which begin
- by matching TEXT. Add each one that you find to the list. */
-
- ALL_PSYMTABS (objfile, ps)
- {
- /* 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; /* If interrupted, then quit. */
- if ((strncmp (SYMBOL_NAME (psym), text, text_len) == 0))
- completion_list_add_symbol (SYMBOL_NAME (psym));
- }
-
- for (psym = objfile->static_psymbols.list + ps->statics_offset;
- psym < (objfile->static_psymbols.list + ps->statics_offset
- + ps->n_static_syms);
- psym++)
- {
- QUIT;
- if ((strncmp (SYMBOL_NAME (psym), text, text_len) == 0))
- completion_list_add_symbol (SYMBOL_NAME (psym));
- }
- }
-
- /* 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)
- {
- if (strncmp (text, msymbol -> name, text_len) == 0)
- {
- completion_list_add_symbol (msymbol -> name);
- }
- }
-
- /* Search upwards from currently selected frame (so that we can
- complete on local vars. */
- for (b = get_selected_block (); b; b = BLOCK_SUPERBLOCK (b))
- {
- if (!BLOCK_SUPERBLOCK (b))
- surrounding_static_block = b; /* For elmin of dups */
-
- /* Also catch fields of types defined in this places which
- match our text string. Only complete on types visible
- from current context. */
- for (i = 0; i < BLOCK_NSYMS (b); i++)
- {
- register struct symbol *sym = BLOCK_SYM (b, i);
-
- if (!strncmp (SYMBOL_NAME (sym), text, text_len))
- completion_list_add_symbol (SYMBOL_NAME (sym));
-
- if (SYMBOL_CLASS (sym) == LOC_TYPEDEF)
- {
- struct type *t = SYMBOL_TYPE (sym);
- enum type_code c = TYPE_CODE (t);
-
- if (c == TYPE_CODE_UNION || c == TYPE_CODE_STRUCT)
- for (j = TYPE_N_BASECLASSES (t); j < TYPE_NFIELDS (t); j++)
- if (TYPE_FIELD_NAME (t, j) &&
- !strncmp (TYPE_FIELD_NAME (t, j), text, text_len))
- completion_list_add_symbol (TYPE_FIELD_NAME (t, j));
- }
- }
- }
-
- /* Go through the symtabs and check the externs and statics for
- symbols which match. */
-
- ALL_SYMTABS (objfile, s)
- {
- b = BLOCKVECTOR_BLOCK (BLOCKVECTOR (s), GLOBAL_BLOCK);
-
- for (i = 0; i < BLOCK_NSYMS (b); i++)
- if (!strncmp (SYMBOL_NAME (BLOCK_SYM (b, i)), text, text_len))
- completion_list_add_symbol (SYMBOL_NAME (BLOCK_SYM (b, i)));
- }
-
- ALL_SYMTABS (objfile, s)
- {
- b = BLOCKVECTOR_BLOCK (BLOCKVECTOR (s), STATIC_BLOCK);
-
- /* Don't do this block twice. */
- if (b == surrounding_static_block) continue;
-
- for (i = 0; i < BLOCK_NSYMS (b); i++)
- if (!strncmp (SYMBOL_NAME (BLOCK_SYM (b, i)), text, text_len))
- completion_list_add_symbol (SYMBOL_NAME (BLOCK_SYM (b, i)));
- }
-
- return (return_val);
- }
-
- #if 0
- /* Add the type of the symbol sym to the type of the current
- function whose block we are in (assumed). The type of
- this current function is contained in *TYPE.
-
- This basically works as follows: When we find a function
- symbol (N_FUNC with a 'f' or 'F' in the symbol name), we record
- a pointer to its type in the global in_function_type. Every
- time we come across a parameter symbol ('p' in its name), then
- this procedure adds the name and type of that parameter
- to the function type pointed to by *TYPE. (Which should correspond
- to in_function_type if it was called correctly).
-
- Note that since we are modifying a type, the result of
- lookup_function_type() should be bcopy()ed before calling
- this. When not in strict typing mode, the expression
- evaluator can choose to ignore this.
-
- Assumption: All of a function's parameter symbols will
- appear before another function symbol is found. The parameters
- appear in the same order in the argument list as they do in the
- symbol table. */
-
- void
- add_param_to_type (type,sym)
- struct type **type;
- struct symbol *sym;
- {
- int num = ++(TYPE_NFIELDS(*type));
-
- if(TYPE_NFIELDS(*type)-1)
- TYPE_FIELDS(*type) = (struct field *)
- (*current_objfile->xrealloc) ((char *)(TYPE_FIELDS(*type)),
- num*sizeof(struct field));
- else
- TYPE_FIELDS(*type) = (struct field *)
- (*current_objfile->xmalloc) (num*sizeof(struct field));
-
- TYPE_FIELD_BITPOS(*type,num-1) = num-1;
- TYPE_FIELD_BITSIZE(*type,num-1) = 0;
- TYPE_FIELD_TYPE(*type,num-1) = SYMBOL_TYPE(sym);
- TYPE_FIELD_NAME(*type,num-1) = SYMBOL_NAME(sym);
- }
- #endif
-
- void
- _initialize_symtab ()
- {
- add_info ("variables", variables_info,
- "All global and static variable names, or those matching REGEXP.");
- add_info ("functions", functions_info,
- "All function names, or those matching REGEXP.");
-
- /* FIXME: This command has at least the following problems:
- 1. It prints builtin types (in a very strange and confusing fashion).
- 2. It doesn't print right, e.g. with
- typedef struct foo *FOO
- type_print prints "FOO" when we want to make it (in this situation)
- print "struct foo *".
- I also think "ptype" or "whatis" is more likely to be useful (but if
- there is much disagreement "info types" can be fixed). */
- add_info ("types", types_info,
- "All type names, or those matching REGEXP.");
-
- #if 0
- add_info ("methods", methods_info,
- "All method names, or those matching REGEXP::REGEXP.\n\
- If the class qualifier is ommited, it is assumed to be the current scope.\n\
- If the first REGEXP is omitted, then all methods matching the second REGEXP\n\
- are listed.");
- #endif
- add_info ("sources", sources_info,
- "Source files in the program.");
-
- add_com ("rbreak", no_class, rbreak_command,
- "Set a breakpoint for all functions matching REGEXP.");
-
- /* Initialize the one built-in type that isn't language dependent... */
- builtin_type_error = init_type (TYPE_CODE_ERROR, 0, 0,
- "<unknown type>", (struct objfile *) NULL);
- }
-