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authorStan Shebs <shebs@codesourcery.com>1999-04-16 01:34:07 +0000
committerStan Shebs <shebs@codesourcery.com>1999-04-16 01:34:07 +0000
commit071ea11e85eb9d529cc5eb3d35f6247466a21b99 (patch)
tree5deda65b8d7b04d1f4cbc534c3206d328e1267ec /gdb/symtab.c
parent1730ec6b1848f0f32154277f788fb29f88d8475b (diff)
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Initial creation of sourceware repository
Diffstat (limited to 'gdb/symtab.c')
-rw-r--r--gdb/symtab.c3892
1 files changed, 0 insertions, 3892 deletions
diff --git a/gdb/symtab.c b/gdb/symtab.c
deleted file mode 100644
index b54c9f6..0000000
--- a/gdb/symtab.c
+++ /dev/null
@@ -1,3892 +0,0 @@
-/* Symbol table lookup for the GNU debugger, GDB.
- Copyright 1986, 87, 88, 89, 90, 91, 92, 93, 94, 95, 96, 97, 1998
- Free Software Foundation, Inc.
-
-This file is part of GDB.
-
-This program is free software; you can redistribute it and/or modify
-it under the terms of the GNU General Public License as published by
-the Free Software Foundation; either version 2 of the License, or
-(at your option) any later version.
-
-This program is distributed in the hope that it will be useful,
-but WITHOUT ANY WARRANTY; without even the implied warranty of
-MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
-GNU General Public License for more details.
-
-You should have received a copy of the GNU General Public License
-along with this program; if not, write to the Free Software
-Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. */
-
-#include "defs.h"
-#include "symtab.h"
-#include "gdbtypes.h"
-#include "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 "gnu-regex.h"
-#include "expression.h"
-#include "language.h"
-#include "demangle.h"
-#include "inferior.h"
-
-#include "obstack.h"
-
-#include <sys/types.h>
-#include <fcntl.h>
-#include "gdb_string.h"
-#include "gdb_stat.h"
-#include <ctype.h>
-
-/* Prototypes for local functions */
-
-static int find_methods PARAMS ((struct type *, char *, struct symbol **));
-
-static void completion_list_add_name PARAMS ((char *, char *, int, char *,
- char *));
-
-static void build_canonical_line_spec PARAMS ((struct symtab_and_line *,
- char *, char ***));
-
-static struct symtabs_and_lines decode_line_2 PARAMS ((struct symbol *[],
- int, int, char ***));
-
-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 output_source_filename PARAMS ((char *, int *));
-
-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, namespace_enum));
-
-static struct partial_symbol *fixup_psymbol_section PARAMS ((struct
- partial_symbol *, struct objfile *));
-
-static struct symtab *lookup_symtab_1 PARAMS ((char *));
-
-static void cplusplus_hint PARAMS ((char *));
-
-static struct symbol *find_active_alias PARAMS ((struct symbol *sym,
- CORE_ADDR addr));
-
-/* This flag is used in hppa-tdep.c, and set in hp-symtab-read.c */
-/* Signals the presence of objects compiled by HP compilers */
-int hp_som_som_object_present = 0;
-
-static void fixup_section PARAMS ((struct general_symbol_info *,
- struct objfile *));
-
-static int file_matches PARAMS ((char *, char **, int));
-
-static void print_symbol_info PARAMS ((namespace_enum,
- struct symtab *, struct symbol *,
- int, char *));
-
-static void print_msymbol_info PARAMS ((struct minimal_symbol *));
-
-static void symtab_symbol_info PARAMS ((char *, namespace_enum, int));
-
-void _initialize_symtab PARAMS ((void));
-
-/* */
-
-/* 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.";
-
-/* While the C++ support is still in flux, issue a possibly helpful hint on
- using the new command completion feature on single quoted demangled C++
- symbols. Remove when loose ends are cleaned up. FIXME -fnf */
-
-static void
-cplusplus_hint (name)
- char *name;
-{
- while (*name == '\'')
- name++;
- printf_filtered ("Hint: try '%s<TAB> or '%s<ESC-?>\n", name, name);
- printf_filtered ("(Note leading single quote.)\n");
-}
-
-/* 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 struct objfile *objfile;
-
- got_symtab:
-
- /* First, search for an exact match */
-
- ALL_SYMTABS (objfile, s)
- if (STREQ (name, s->filename))
- return s;
-
- slash = strchr (name, '/');
-
- /* Now, search for a matching tail (only if name doesn't have any dirs) */
-
- if (!slash)
- ALL_SYMTABS (objfile, s)
- {
- char *p = s -> filename;
- char *tail = strrchr (p, '/');
-
- if (tail)
- p = tail + 1;
-
- if (STREQ (p, name))
- return s;
- }
-
- /* Same search rules as above apply here, but now we look thru the
- psymtabs. */
-
- ps = lookup_partial_symtab (name);
- if (!ps)
- return (NULL);
-
- if (ps -> readin)
- error ("Internal: readin %s pst for `%s' found when no symtab found.",
- ps -> filename, name);
-
- s = PSYMTAB_TO_SYMTAB (ps);
-
- if (s)
- return s;
-
- /* At this point, we have located the psymtab for this file, but
- the conversion to a symtab has failed. This usually happens
- when we are looking up an include file. In this case,
- PSYMTAB_TO_SYMTAB doesn't return a symtab, even though one has
- been created. So, we need to run through the symtabs again in
- order to find the file.
- XXX - This is a crock, and should be fixed inside of the the
- symbol parsing routines. */
- goto got_symtab;
-}
-
-/* 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;
-#if 0
- register char *copy;
-#endif
-
- s = lookup_symtab_1 (name);
- if (s) return s;
-
-#if 0
- /* This screws c-exp.y:yylex if there is both a type "tree" and a symtab
- "tree.c". */
-
- /* If name not found as specified, see if adding ".c" helps. */
- /* Why is this? Is it just a user convenience? (If so, it's pretty
- questionable in the presence of C++, FORTRAN, etc.). It's not in
- the GDB manual. */
-
- copy = (char *) alloca (strlen (name) + 3);
- strcpy (copy, name);
- strcat (copy, ".c");
- s = lookup_symtab_1 (copy);
- if (s) return s;
-#endif /* 0 */
-
- /* We didn't find anything; die. */
- return 0;
-}
-
-/* Lookup the partial symbol table of a source file named NAME.
- *If* there is no '/' in the name, a match after a '/'
- in the psymtab filename will also work. */
-
-struct partial_symtab *
-lookup_partial_symtab (name)
-char *name;
-{
- register struct partial_symtab *pst;
- register struct objfile *objfile;
-
- ALL_PSYMTABS (objfile, pst)
- {
- if (STREQ (name, pst -> filename))
- {
- return (pst);
- }
- }
-
- /* Now, search for a matching tail (only if name doesn't have any dirs) */
-
- if (!strchr (name, '/'))
- ALL_PSYMTABS (objfile, pst)
- {
- char *p = pst -> filename;
- char *tail = strrchr (p, '/');
-
- if (tail)
- p = tail + 1;
-
- if (STREQ (p, name))
- return (pst);
- }
-
- return (NULL);
-}
-
-/* Mangle a GDB method stub type. This actually reassembles the pieces of the
- full method name, which consist of the class name (from T), the unadorned
- method name from METHOD_ID, and the signature for the specific overload,
- specified by SIGNATURE_ID. Note that this function is g++ specific. */
-
-char *
-gdb_mangle_name (type, method_id, signature_id)
- struct type *type;
- int method_id, signature_id;
-{
- int mangled_name_len;
- char *mangled_name;
- struct fn_field *f = TYPE_FN_FIELDLIST1 (type, method_id);
- struct fn_field *method = &f[signature_id];
- char *field_name = TYPE_FN_FIELDLIST_NAME (type, method_id);
- char *physname = TYPE_FN_FIELD_PHYSNAME (f, signature_id);
- char *newname = type_name_no_tag (type);
-
- /* Does the form of physname indicate that it is the full mangled name
- of a constructor (not just the args)? */
- int is_full_physname_constructor;
-
- int is_constructor;
- int is_destructor = DESTRUCTOR_PREFIX_P (physname);
- /* Need a new type prefix. */
- char *const_prefix = method->is_const ? "C" : "";
- char *volatile_prefix = method->is_volatile ? "V" : "";
- char buf[20];
- int len = (newname == NULL ? 0 : strlen (newname));
-
- is_full_physname_constructor =
- ((physname[0]=='_' && physname[1]=='_' &&
- (isdigit(physname[2]) || physname[2]=='Q' || physname[2]=='t'))
- || (strncmp(physname, "__ct", 4) == 0));
-
- is_constructor =
- is_full_physname_constructor || (newname && STREQ(field_name, newname));
-
- if (!is_destructor)
- is_destructor = (strncmp(physname, "__dt", 4) == 0);
-
- if (is_destructor || is_full_physname_constructor)
- {
- mangled_name = (char*) xmalloc(strlen(physname)+1);
- strcpy(mangled_name, physname);
- return mangled_name;
- }
-
- if (len == 0)
- {
- sprintf (buf, "__%s%s", const_prefix, volatile_prefix);
- }
- else if (physname[0] == 't' || physname[0] == 'Q')
- {
- /* The physname for template and qualified methods already includes
- the class name. */
- sprintf (buf, "__%s%s", const_prefix, volatile_prefix);
- newname = NULL;
- len = 0;
- }
- else
- {
- sprintf (buf, "__%s%s%d", const_prefix, volatile_prefix, len);
- }
- mangled_name_len = ((is_constructor ? 0 : strlen (field_name))
- + strlen (buf) + len
- + strlen (physname)
- + 1);
-
- /* Only needed for GNU-mangled names. ANSI-mangled names
- work with the normal mechanisms. */
- if (OPNAME_PREFIX_P (field_name))
- {
- const 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);
- /* If the class doesn't have a name, i.e. newname NULL, then we just
- mangle it using 0 for the length of the class. Thus it gets mangled
- as something starting with `::' rather than `classname::'. */
- if (newname != NULL)
- strcat (mangled_name, newname);
-
- strcat (mangled_name, physname);
- return (mangled_name);
-}
-
-
-
-/* Find which partial symtab on contains PC and SECTION. Return 0 if none. */
-
-struct partial_symtab *
-find_pc_sect_psymtab (pc, section)
- CORE_ADDR pc;
- asection *section;
-{
- register struct partial_symtab *pst;
- register struct objfile *objfile;
-
- ALL_PSYMTABS (objfile, pst)
- {
- if (pc >= pst->textlow && pc < pst->texthigh)
- {
- struct minimal_symbol *msymbol;
- struct partial_symtab *tpst;
-
- /* An objfile that has its functions reordered might have
- many partial symbol tables containing the PC, but
- we want the partial symbol table that contains the
- function containing the PC. */
- if (!(objfile->flags & OBJF_REORDERED) &&
- section == 0) /* can't validate section this way */
- return (pst);
-
- msymbol = lookup_minimal_symbol_by_pc_section (pc, section);
- if (msymbol == NULL)
- return (pst);
-
- for (tpst = pst; tpst != NULL; tpst = tpst->next)
- {
- if (pc >= tpst->textlow && pc < tpst->texthigh)
- {
- struct partial_symbol *p;
-
- p = find_pc_sect_psymbol (tpst, pc, section);
- if (p != NULL
- && SYMBOL_VALUE_ADDRESS(p)
- == SYMBOL_VALUE_ADDRESS (msymbol))
- return (tpst);
- }
- }
- return (pst);
- }
- }
- return (NULL);
-}
-
-/* Find which partial symtab contains PC. Return 0 if none.
- Backward compatibility, no section */
-
-struct partial_symtab *
-find_pc_psymtab (pc)
- CORE_ADDR pc;
-{
- return find_pc_sect_psymtab (pc, find_pc_mapped_section (pc));
-}
-
-/* Find which partial symbol within a psymtab matches PC and SECTION.
- Return 0 if none. Check all psymtabs if PSYMTAB is 0. */
-
-struct partial_symbol *
-find_pc_sect_psymbol (psymtab, pc, section)
- struct partial_symtab *psymtab;
- CORE_ADDR pc;
- asection *section;
-{
- struct partial_symbol *best = NULL, *p, **pp;
- CORE_ADDR best_pc;
-
- if (!psymtab)
- psymtab = find_pc_sect_psymtab (pc, section);
- if (!psymtab)
- return 0;
-
- /* Cope with programs that start at address 0 */
- best_pc = (psymtab->textlow != 0) ? psymtab->textlow - 1 : 0;
-
- /* Search the global symbols as well as the static symbols, so that
- find_pc_partial_function doesn't use a minimal symbol and thus
- cache a bad endaddr. */
- for (pp = psymtab->objfile->global_psymbols.list + psymtab->globals_offset;
- (pp - (psymtab->objfile->global_psymbols.list + psymtab->globals_offset)
- < psymtab->n_global_syms);
- pp++)
- {
- p = *pp;
- if (SYMBOL_NAMESPACE (p) == VAR_NAMESPACE
- && SYMBOL_CLASS (p) == LOC_BLOCK
- && pc >= SYMBOL_VALUE_ADDRESS (p)
- && (SYMBOL_VALUE_ADDRESS (p) > best_pc
- || (psymtab->textlow == 0
- && best_pc == 0 && SYMBOL_VALUE_ADDRESS (p) == 0)))
- {
- if (section) /* match on a specific section */
- {
- fixup_psymbol_section (p, psymtab->objfile);
- if (SYMBOL_BFD_SECTION (p) != section)
- continue;
- }
- best_pc = SYMBOL_VALUE_ADDRESS (p);
- best = p;
- }
- }
-
- for (pp = psymtab->objfile->static_psymbols.list + psymtab->statics_offset;
- (pp - (psymtab->objfile->static_psymbols.list + psymtab->statics_offset)
- < psymtab->n_static_syms);
- pp++)
- {
- p = *pp;
- if (SYMBOL_NAMESPACE (p) == VAR_NAMESPACE
- && SYMBOL_CLASS (p) == LOC_BLOCK
- && pc >= SYMBOL_VALUE_ADDRESS (p)
- && (SYMBOL_VALUE_ADDRESS (p) > best_pc
- || (psymtab->textlow == 0
- && best_pc == 0 && SYMBOL_VALUE_ADDRESS (p) == 0)))
- {
- if (section) /* match on a specific section */
- {
- fixup_psymbol_section (p, psymtab->objfile);
- if (SYMBOL_BFD_SECTION (p) != section)
- continue;
- }
- best_pc = SYMBOL_VALUE_ADDRESS (p);
- best = p;
- }
- }
-
- return best;
-}
-
-/* Find which partial symbol within a psymtab matches PC. Return 0 if none.
- Check all psymtabs if PSYMTAB is 0. Backwards compatibility, no section. */
-
-struct partial_symbol *
-find_pc_psymbol (psymtab, pc)
- struct partial_symtab *psymtab;
- CORE_ADDR pc;
-{
- return find_pc_sect_psymbol (psymtab, pc, find_pc_mapped_section (pc));
-}
-
-/* Debug symbols usually don't have section information. We need to dig that
- out of the minimal symbols and stash that in the debug symbol. */
-
-static void
-fixup_section (ginfo, objfile)
- struct general_symbol_info *ginfo;
- struct objfile *objfile;
-{
- struct minimal_symbol *msym;
- msym = lookup_minimal_symbol (ginfo->name, NULL, objfile);
-
- if (msym)
- ginfo->bfd_section = SYMBOL_BFD_SECTION (msym);
-}
-
-struct symbol *
-fixup_symbol_section (sym, objfile)
- struct symbol *sym;
- struct objfile *objfile;
-{
- if (!sym)
- return NULL;
-
- if (SYMBOL_BFD_SECTION (sym))
- return sym;
-
- fixup_section (&sym->ginfo, objfile);
-
- return sym;
-}
-
-static struct partial_symbol *
-fixup_psymbol_section (psym, objfile)
- struct partial_symbol *psym;
- struct objfile *objfile;
-{
- if (!psym)
- return NULL;
-
- if (SYMBOL_BFD_SECTION (psym))
- return psym;
-
- fixup_section (&psym->ginfo, objfile);
-
- return psym;
-}
-
-/* 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.) */
-
-/* This function has a bunch of loops in it and it would seem to be
- attractive to put in some QUIT's (though I'm not really sure
- whether it can run long enough to be really important). But there
- are a few calls for which it would appear to be bad news to quit
- out of here: find_proc_desc in alpha-tdep.c and mips-tdep.c, and
- nindy_frame_chain_valid in nindy-tdep.c. (Note that there is C++
- code below which can error(), but that probably doesn't affect
- these calls since they are looking for a known variable and thus
- can probably assume it will never hit the C++ code). */
-
-struct symbol *
-lookup_symbol (name, block, namespace, is_a_field_of_this, symtab)
- const char *name;
- register const struct block *block;
- const namespace_enum namespace;
- int *is_a_field_of_this;
- struct symtab **symtab;
-{
- register struct symbol *sym;
- register struct symtab *s = NULL;
- register struct partial_symtab *ps;
- struct blockvector *bv;
- register struct objfile *objfile = NULL;
- 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 fixup_symbol_section (sym, objfile);
- }
- block = BLOCK_SUPERBLOCK (block);
- }
-
- /* FIXME: this code is never executed--block is always NULL at this
- point. What is it trying to do, anyway? We already should have
- checked the STATIC_BLOCK above (it is the superblock of top-level
- blocks). Why is VAR_NAMESPACE special-cased? */
- /* 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_block_symbol (b, name, VAR_NAMESPACE);
- if (sym)
- {
- block_found = b;
- if (symtab != NULL)
- *symtab = s;
- return fixup_symbol_section (sym, objfile);
- }
- }
- }
- }
-
-
- /* 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 NULL;
- }
- }
-
- /* 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 fixup_symbol_section (sym, objfile);
- }
- }
-
- /* Check for the possibility of the symbol being a function or
- a mangled variable 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, NULL, NULL);
- if (msymbol != NULL)
- {
- s = find_pc_sect_symtab (SYMBOL_VALUE_ADDRESS (msymbol),
- SYMBOL_BFD_SECTION (msymbol));
- if (s != NULL)
- {
- /* This is a function which has a symtab for its address. */
- bv = BLOCKVECTOR (s);
- block = BLOCKVECTOR_BLOCK (bv, GLOBAL_BLOCK);
- sym = lookup_block_symbol (block, SYMBOL_NAME (msymbol),
- 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, SYMBOL_NAME (msymbol),
- 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 fixup_symbol_section (sym, objfile);
- }
- else if (MSYMBOL_TYPE (msymbol) != mst_text
- && MSYMBOL_TYPE (msymbol) != mst_file_text
- && !STREQ (name, SYMBOL_NAME (msymbol)))
- {
- /* This is a mangled variable, look it up by its
- mangled name. */
- return lookup_symbol (SYMBOL_NAME (msymbol), block,
- namespace, is_a_field_of_this, symtab);
- }
- /* There are no debug symbols for this file, or we are looking
- for an unmangled variable.
- Try to find a matching static symbol below. */
- }
- }
-
- 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 %s psymtab but not in symtab", name, ps->filename);
- if (symtab != NULL)
- *symtab = s;
- return fixup_symbol_section (sym, objfile);
- }
- }
-
- /* 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 fixup_symbol_section (sym, objfile);
- }
- }
-
- 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 %s psymtab but not in symtab", name, ps->filename);
- if (symtab != NULL)
- *symtab = s;
- return fixup_symbol_section (sym, objfile);
- }
- }
-
- if (symtab != NULL)
- *symtab = NULL;
- return 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;
- namespace_enum namespace;
-{
- struct partial_symbol **start, **psym;
- struct partial_symbol **top, **bottom, **center;
- int length = (global ? pst->n_global_syms : pst->n_static_syms);
- int do_linear_search = 1;
-
- if (length == 0)
- {
- return (NULL);
- }
-
- 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. */
- {
- do_linear_search = 0;
-
- /* 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;
- if (!(center < top))
- abort ();
- if (!do_linear_search
- && (SYMBOL_LANGUAGE (*center) == language_cplus
-/* start-sanitize-java */
- || SYMBOL_LANGUAGE (*center) == language_java
-/* end-sanitize-java */
- ))
- {
- do_linear_search = 1;
- }
- if (STRCMP (SYMBOL_NAME (*center), name) >= 0)
- {
- top = center;
- }
- else
- {
- bottom = center + 1;
- }
- }
- if (!(top == bottom))
- abort ();
- while (STREQ (SYMBOL_NAME (*top), name))
- {
- if (SYMBOL_NAMESPACE (*top) == namespace)
- {
- return (*top);
- }
- top ++;
- }
- }
-
- /* Can't use a binary search or else we found during the binary search that
- we should also do a linear search. */
-
- if (do_linear_search)
- {
- for (psym = start; psym < start + length; psym++)
- {
- if (namespace == SYMBOL_NAMESPACE (*psym))
- {
- if (SYMBOL_MATCHES_NAME (*psym, name))
- {
- return (*psym);
- }
- }
- }
- }
-
- return (NULL);
-}
-
-/* Look up a type named NAME in the struct_namespace. The type returned
- must not be opaque -- i.e., must have at least one field defined
-
- This code was modelled on lookup_symbol -- the parts not relevant to looking
- up types were just left out. In particular it's assumed here that types
- are available in struct_namespace and only at file-static or global blocks. */
-
-
-struct type *
-lookup_transparent_type (name)
- const char *name;
-{
- register struct symbol *sym;
- register struct symtab *s = NULL;
- register struct partial_symtab *ps;
- struct blockvector *bv;
- register struct objfile *objfile;
- register struct block *block;
- register struct minimal_symbol *msymbol;
-
- /* Now search all the global symbols. Do the symtab's first, then
- check the psymtab's. If a psymtab indicates the existence
- of the desired name as a global, then do psymtab-to-symtab
- conversion on the fly and return the found symbol. */
-
- ALL_SYMTABS (objfile, s)
- {
- bv = BLOCKVECTOR (s);
- block = BLOCKVECTOR_BLOCK (bv, GLOBAL_BLOCK);
- sym = lookup_block_symbol (block, name, STRUCT_NAMESPACE);
- if (sym && !TYPE_IS_OPAQUE (SYMBOL_TYPE (sym)))
- {
- return SYMBOL_TYPE (sym);
- }
- }
-
- ALL_PSYMTABS (objfile, ps)
- {
- if (!ps->readin && lookup_partial_symbol (ps, name, 1, STRUCT_NAMESPACE))
- {
- s = PSYMTAB_TO_SYMTAB(ps);
- bv = BLOCKVECTOR (s);
- block = BLOCKVECTOR_BLOCK (bv, GLOBAL_BLOCK);
- sym = lookup_block_symbol (block, name, STRUCT_NAMESPACE);
- if (!sym)
- {
- /* This shouldn't be necessary, but as a last resort
- * try looking in the statics even though the psymtab
- * claimed the symbol was global. It's possible that
- * the psymtab gets it wrong in some cases.
- */
- block = BLOCKVECTOR_BLOCK (bv, STATIC_BLOCK);
- sym = lookup_block_symbol (block, name, STRUCT_NAMESPACE);
- if (!sym)
- error ("Internal: global symbol `%s' found in %s psymtab but not in symtab.\n\
-%s may be an inlined function, or may be a template function\n\
-(if a template, try specifying an instantiation: %s<type>).",
- name, ps->filename, name, name);
- }
- if (!TYPE_IS_OPAQUE (SYMBOL_TYPE (sym)))
- return SYMBOL_TYPE (sym);
- }
- }
-
- /* Now search the static file-level symbols.
- Not strictly correct, but more useful than an error.
- Do the symtab's first, then
- check the psymtab's. If a psymtab indicates the existence
- of the desired name as a file-level static, then do psymtab-to-symtab
- conversion on the fly and return the found symbol.
- */
-
- ALL_SYMTABS (objfile, s)
- {
- bv = BLOCKVECTOR (s);
- block = BLOCKVECTOR_BLOCK (bv, STATIC_BLOCK);
- sym = lookup_block_symbol (block, name, STRUCT_NAMESPACE);
- if (sym && !TYPE_IS_OPAQUE (SYMBOL_TYPE (sym)))
- {
- return SYMBOL_TYPE (sym);
- }
- }
-
- ALL_PSYMTABS (objfile, ps)
- {
- if (!ps->readin && lookup_partial_symbol (ps, name, 0, STRUCT_NAMESPACE))
- {
- s = PSYMTAB_TO_SYMTAB(ps);
- bv = BLOCKVECTOR (s);
- block = BLOCKVECTOR_BLOCK (bv, STATIC_BLOCK);
- sym = lookup_block_symbol (block, name, STRUCT_NAMESPACE);
- if (!sym)
- {
- /* This shouldn't be necessary, but as a last resort
- * try looking in the globals even though the psymtab
- * claimed the symbol was static. It's possible that
- * the psymtab gets it wrong in some cases.
- */
- block = BLOCKVECTOR_BLOCK (bv, GLOBAL_BLOCK);
- sym = lookup_block_symbol (block, name, STRUCT_NAMESPACE);
- if (!sym)
- error ("Internal: static symbol `%s' found in %s psymtab but not in symtab.\n\
-%s may be an inlined function, or may be a template function\n\
-(if a template, try specifying an instantiation: %s<type>).",
- name, ps->filename, name, name);
- }
- if (!TYPE_IS_OPAQUE (SYMBOL_TYPE (sym)))
- return SYMBOL_TYPE (sym);
- }
- }
- return (struct type *) 0;
-}
-
-
-/* Find the psymtab containing main(). */
-/* FIXME: What about languages without main() or specially linked
- executables that have no 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);
-}
-
-/* Search BLOCK for symbol NAME in NAMESPACE.
-
- Note that if NAME is the demangled form of a C++ symbol, we will fail
- to find a match during the binary search of the non-encoded names, but
- for now we don't worry about the slight inefficiency of looking for
- a match we'll never find, since it will go pretty quick. Once the
- binary search terminates, we drop through and do a straight linear
- search on the symbols. Each symbol which is marked as being a C++
- symbol (language_cplus set) has both the encoded and non-encoded names
- tested for a match. */
-
-struct symbol *
-lookup_block_symbol (block, name, namespace)
- register const struct block *block;
- const char *name;
- const namespace_enum namespace;
-{
- register int bot, top, inc;
- register struct symbol *sym;
- register struct symbol *sym_found = NULL;
- register int do_linear_search = 1;
-
- /* If the blocks's symbols were sorted, start with a binary search. */
-
- if (BLOCK_SHOULD_SORT (block))
- {
- /* Reset the linear search flag so if the binary search fails, we
- won't do the linear search once unless we find some reason to
- do so, such as finding a C++ symbol during the binary search.
- Note that for C++ modules, ALL the symbols in a block should
- end up marked as C++ symbols. */
-
- do_linear_search = 0;
- top = BLOCK_NSYMS (block);
- bot = 0;
-
- /* 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 (!do_linear_search
- && (SYMBOL_LANGUAGE (sym) == language_cplus
-/* start-sanitize-java */
- || SYMBOL_LANGUAGE (sym) == language_java
-/* end-sanitize-java */
- ))
- {
- do_linear_search = 1;
- }
- 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; I believe it is now impossible for us
- to encounter two symbols with the same name and namespace
- here, because blocks containing argument symbols are no
- longer sorted. */
-
- 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)
- {
- break;
- }
- bot++;
- }
- }
-
- /* Here if block isn't sorted, or we fail to find a match during the
- binary search above. If during the binary search above, we find a
- symbol which is a C++ symbol, then we have re-enabled the linear
- search flag which was reset when starting the binary search.
-
- 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. */
-
- if (do_linear_search)
- {
- top = BLOCK_NSYMS (block);
- bot = 0;
- while (bot < top)
- {
- sym = BLOCK_SYM (block, bot);
- if (SYMBOL_NAMESPACE (sym) == namespace &&
- SYMBOL_MATCHES_NAME (sym, name))
- {
- /* If SYM has aliases, then use any alias that is active
- at the current PC. If no alias is active at the current
- PC, then use the main symbol.
-
- ?!? Is checking the current pc correct? Is this routine
- ever called to look up a symbol from another context? */
- if (SYMBOL_ALIASES (sym))
- sym = find_active_alias (sym, read_pc ());
-
- sym_found = sym;
- if (SYMBOL_CLASS (sym) != LOC_ARG &&
- SYMBOL_CLASS (sym) != LOC_LOCAL_ARG &&
- SYMBOL_CLASS (sym) != LOC_REF_ARG &&
- SYMBOL_CLASS (sym) != LOC_REGPARM &&
- SYMBOL_CLASS (sym) != LOC_REGPARM_ADDR &&
- SYMBOL_CLASS (sym) != LOC_BASEREG_ARG)
- {
- break;
- }
- }
- bot++;
- }
- }
- return (sym_found); /* Will be NULL if not found. */
-}
-
-/* Given a main symbol SYM and ADDR, search through the alias
- list to determine if an alias is active at ADDR and return
- the active alias.
-
- If no alias is active, then return SYM. */
-
-static struct symbol *
-find_active_alias (sym, addr)
- struct symbol *sym;
- CORE_ADDR addr;
-{
- struct range_list *r;
- struct alias_list *aliases;
-
- /* If we have aliases, check them first. */
- aliases = SYMBOL_ALIASES (sym);
-
- while (aliases)
- {
- if (!SYMBOL_RANGES (aliases->sym))
- return aliases->sym;
- for (r = SYMBOL_RANGES (aliases->sym); r; r = r->next)
- {
- if (r->start <= addr && r->end > addr)
- return aliases->sym;
- }
- aliases = aliases->next;
- }
-
- /* Nothing found, return the main symbol. */
- return sym;
-}
-
-
-/* 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);
-}
-
-/* Find the symtab associated with PC and SECTION. Look through the
- psymtabs and read in another symtab if necessary. */
-
-struct symtab *
-find_pc_sect_symtab (pc, section)
- CORE_ADDR pc;
- asection *section;
-{
- register struct block *b;
- struct blockvector *bv;
- register struct symtab *s = NULL;
- register struct symtab *best_s = NULL;
- register struct partial_symtab *ps;
- register struct objfile *objfile;
- CORE_ADDR distance = 0;
-
- /* Search all symtabs for the one whose file contains our address, and which
- is the smallest of all the ones containing the address. This is designed
- to deal with a case like symtab a is at 0x1000-0x2000 and 0x3000-0x4000
- and symtab b is at 0x2000-0x3000. So the GLOBAL_BLOCK for a is from
- 0x1000-0x4000, but for address 0x2345 we want to return symtab b.
-
- This happens for native ecoff format, where code from included files
- gets its own symtab. The symtab for the included file should have
- been read in already via the dependency mechanism.
- It might be swifter to create several symtabs with the same name
- like xcoff does (I'm not sure).
-
- It also happens for objfiles that have their functions reordered.
- For these, the symtab we are looking for is not necessarily read in. */
-
- ALL_SYMTABS (objfile, s)
- {
- bv = BLOCKVECTOR (s);
- b = BLOCKVECTOR_BLOCK (bv, GLOBAL_BLOCK);
- if (BLOCK_START (b) <= pc
- && BLOCK_END (b) > pc
- && (distance == 0
- || BLOCK_END (b) - BLOCK_START (b) < distance))
- {
- /* For an objfile that has its functions reordered,
- find_pc_psymtab will find the proper partial symbol table
- and we simply return its corresponding symtab. */
- /* In order to better support objfiles that contain both
- stabs and coff debugging info, we continue on if a psymtab
- can't be found. */
- if ((objfile->flags & OBJF_REORDERED) && objfile->psymtabs)
- {
- ps = find_pc_sect_psymtab (pc, section);
- if (ps)
- return PSYMTAB_TO_SYMTAB (ps);
- }
- if (section != 0)
- {
- int i;
-
- for (i = 0; i < b->nsyms; i++)
- {
- fixup_symbol_section (b->sym[i], objfile);
- if (section == SYMBOL_BFD_SECTION (b->sym[i]))
- break;
- }
- if (i >= b->nsyms)
- continue; /* no symbol in this symtab matches section */
- }
- distance = BLOCK_END (b) - BLOCK_START (b);
- best_s = s;
- }
- }
-
- if (best_s != NULL)
- return(best_s);
-
- s = NULL;
- ps = find_pc_sect_psymtab (pc, section);
- if (ps)
- {
- if (ps->readin)
- /* Might want to error() here (in case symtab is corrupt and
- will cause a core dump), but maybe we can successfully
- continue, so let's not. */
- /* FIXME-32x64: assumes pc fits in a long */
- warning ("\
-(Internal error: pc 0x%lx in read in psymtab, but not in symtab.)\n",
- (unsigned long) pc);
- s = PSYMTAB_TO_SYMTAB (ps);
- }
- return (s);
-}
-
-/* Find the symtab associated with PC. Look through the psymtabs and
- read in another symtab if necessary. Backward compatibility, no section */
-
-struct symtab *
-find_pc_symtab (pc)
- CORE_ADDR pc;
-{
- return find_pc_sect_symtab (pc, find_pc_mapped_section (pc));
-}
-
-
-#if 0
-
-/* Find the closest symbol value (of any sort -- function or variable)
- for a given address value. Slow but complete. (currently unused,
- mainly because it is too slow. We could fix it if each symtab and
- psymtab had contained in it the addresses ranges of each of its
- sections, which also would be required to make things like "info
- line *0x2345" cause psymtabs to be converted to symtabs). */
-
-struct symbol *
-find_addr_symbol (addr, symtabp, symaddrp)
- CORE_ADDR addr;
- struct symtab **symtabp;
- CORE_ADDR *symaddrp;
-{
- struct symtab *symtab, *best_symtab;
- struct objfile *objfile;
- register int bot, top;
- register struct symbol *sym;
- register CORE_ADDR sym_addr;
- struct block *block;
- int blocknum;
-
- /* Info on best symbol seen so far */
-
- register CORE_ADDR best_sym_addr = 0;
- struct symbol *best_sym = 0;
-
- /* FIXME -- we should pull in all the psymtabs, too! */
- ALL_SYMTABS (objfile, symtab)
- {
- /* Search the global and static blocks in this symtab for
- the closest symbol-address to the desired address. */
-
- for (blocknum = GLOBAL_BLOCK; blocknum <= STATIC_BLOCK; blocknum++)
- {
- QUIT;
- block = BLOCKVECTOR_BLOCK (BLOCKVECTOR (symtab), blocknum);
- top = BLOCK_NSYMS (block);
- for (bot = 0; bot < top; bot++)
- {
- sym = BLOCK_SYM (block, bot);
- switch (SYMBOL_CLASS (sym))
- {
- case LOC_STATIC:
- case LOC_LABEL:
- sym_addr = SYMBOL_VALUE_ADDRESS (sym);
- break;
-
- case LOC_BLOCK:
- sym_addr = BLOCK_START (SYMBOL_BLOCK_VALUE (sym));
- break;
-
- default:
- continue;
- }
-
- if (sym_addr <= addr)
- if (sym_addr > best_sym_addr)
- {
- /* Quit if we found an exact match. */
- best_sym = sym;
- best_sym_addr = sym_addr;
- best_symtab = symtab;
- if (sym_addr == addr)
- goto done;
- }
- }
- }
- }
-
- done:
- if (symtabp)
- *symtabp = best_symtab;
- if (symaddrp)
- *symaddrp = best_sym_addr;
- return best_sym;
-}
-#endif /* 0 */
-
-/* Find the source file and line number for a given PC value and section.
- 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. */
-
-/* The big complication here is that a line may start in one file, and end just
- before the start of another file. This usually occurs when you #include
- code in the middle of a subroutine. To properly find the end of a line's PC
- range, we must search all symtabs associated with this compilation unit, and
- find the one whose first PC is closer than that of the next line in this
- symtab. */
-
-/* If it's worth the effort, we could be using a binary search. */
-
-struct symtab_and_line
-find_pc_sect_line (pc, section, notcurrent)
- CORE_ADDR pc;
- struct sec *section;
- 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. */
-
- struct linetable_entry *best = NULL;
- 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. */
- struct linetable_entry *alt = NULL;
- struct symtab *alt_symtab = 0;
-
- /* Info on best line seen in this file. */
-
- struct linetable_entry *prev;
-
- /* 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. */
-
- INIT_SAL (&val); /* initialize to zeroes */
-
- if (notcurrent)
- pc -= 1;
-
- s = find_pc_sect_symtab (pc, section);
- if (!s)
- {
- /* if no symbol information, return previous pc */
- if (notcurrent)
- pc++;
- val.pc = pc;
- 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;
- if (len <= 0)
- {
- /* I think len can be zero if the symtab lacks line numbers
- (e.g. gcc -g1). (Either that or the LINETABLE is NULL;
- I'm not sure which, and maybe it depends on the symbol
- reader). */
- continue;
- }
-
- prev = NULL;
- item = l->item; /* Get first line info */
-
- /* 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 (item->pc > pc && (!alt || item->pc < alt->pc))
- {
- alt = item;
- alt_symtab = s;
- }
-
- for (i = 0; i < len; i++, item++)
- {
- /* Leave prev pointing to the linetable entry for the last line
- that started at or before PC. */
- if (item->pc > pc)
- break;
-
- prev = item;
- }
-
- /* At this point, prev points at the line whose start addr is <= pc, and
- item points at the next line. If we ran off the end of the linetable
- (pc >= start of the last line), then prev == item. If pc < start of
- the first line, prev will not be set. */
-
- /* 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 && (!best || prev->pc > best->pc))
- {
- best = prev;
- 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;
- }
- }
-
- if (!best_symtab)
- {
- if (!alt_symtab)
- { /* If we didn't find any line # info, just
- return zeros. */
- val.pc = pc;
- }
- else
- {
- val.symtab = alt_symtab;
- val.line = alt->line - 1;
-
- /* Don't return line 0, that means that we didn't find the line. */
- if (val.line == 0) ++val.line;
-
- 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 || best_end < alt->pc))
- val.end = best_end;
- else if (alt)
- val.end = alt->pc;
- else
- val.end = BLOCK_END (BLOCKVECTOR_BLOCK (bv, GLOBAL_BLOCK));
- }
- val.section = section;
- return val;
-}
-
-/* Backward compatibility (no section) */
-
-struct symtab_and_line
-find_pc_line (pc, notcurrent)
- CORE_ADDR pc;
- int notcurrent;
-{
- asection *section;
-
- section = find_pc_overlay (pc);
- if (pc_in_unmapped_range (pc, section))
- pc = overlay_mapped_address (pc, section);
- return find_pc_sect_line (pc, section, notcurrent);
-}
-
-
-static struct symtab* find_line_symtab PARAMS ((struct symtab *, int,
- int *, int *));
-
-/* Find line number LINE in any symtab whose name is the same as
- SYMTAB.
-
- If found, return the symtab that contains the linetable in which it was
- found, set *INDEX to the index in the linetable of the best entry
- found, and set *EXACT_MATCH nonzero if the value returned is an
- exact match.
-
- If not found, return NULL. */
-
-static struct symtab*
-find_line_symtab (symtab, line, index, exact_match)
- struct symtab *symtab;
- int line;
- int *index;
- int *exact_match;
-{
- int exact;
-
- /* BEST_INDEX and BEST_LINETABLE identify the smallest linenumber > LINE
- so far seen. */
-
- int best_index;
- struct linetable *best_linetable;
- struct symtab *best_symtab;
-
- /* First try looking it up in the given symtab. */
- best_linetable = LINETABLE (symtab);
- best_symtab = symtab;
- best_index = find_line_common (best_linetable, line, &exact);
- if (best_index < 0 || !exact)
- {
- /* Didn't find an exact match. So we better keep looking for
- another symtab with the same name. In the case of xcoff,
- multiple csects for one source file (produced by IBM's FORTRAN
- compiler) produce multiple symtabs (this is unavoidable
- assuming csects can be at arbitrary places in memory and that
- the GLOBAL_BLOCK of a symtab has a begin and end address). */
-
- /* BEST is the smallest linenumber > LINE so far seen,
- or 0 if none has been seen so far.
- BEST_INDEX and BEST_LINETABLE identify the item for it. */
- int best;
-
- struct objfile *objfile;
- struct symtab *s;
-
- if (best_index >= 0)
- best = best_linetable->item[best_index].line;
- else
- best = 0;
-
- ALL_SYMTABS (objfile, s)
- {
- struct linetable *l;
- int ind;
-
- if (!STREQ (symtab->filename, s->filename))
- continue;
- l = LINETABLE (s);
- ind = find_line_common (l, line, &exact);
- if (ind >= 0)
- {
- if (exact)
- {
- best_index = ind;
- best_linetable = l;
- best_symtab = s;
- goto done;
- }
- if (best == 0 || l->item[ind].line < best)
- {
- best = l->item[ind].line;
- best_index = ind;
- best_linetable = l;
- best_symtab = s;
- }
- }
- }
- }
- done:
- if (best_index < 0)
- return NULL;
-
- if (index)
- *index = best_index;
- if (exact_match)
- *exact_match = exact;
-
- return best_symtab;
-}
-
-/* Set the PC value for a given source file and line number and return true.
- Returns zero for invalid line number (and sets the PC to 0).
- The source file is specified with a struct symtab. */
-
-int
-find_line_pc (symtab, line, pc)
- struct symtab *symtab;
- int line;
- CORE_ADDR *pc;
-{
- struct linetable *l;
- int ind;
-
- *pc = 0;
- if (symtab == 0)
- return 0;
-
- symtab = find_line_symtab (symtab, line, &ind, NULL);
- if (symtab != NULL)
- {
- l = LINETABLE (symtab);
- *pc = l->item[ind].pc;
- return 1;
- }
- else
- return 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 (sal, startptr, endptr)
- struct symtab_and_line sal;
- CORE_ADDR *startptr, *endptr;
-{
- CORE_ADDR startaddr;
- struct symtab_and_line found_sal;
-
- startaddr = sal.pc;
- if (startaddr==0 && !find_line_pc (sal.symtab, sal.line, &startaddr))
- return 0;
-
- /* This whole function is based on address. For example, if line 10 has
- two parts, one from 0x100 to 0x200 and one from 0x300 to 0x400, then
- "info line *0x123" should say the line goes from 0x100 to 0x200
- and "info line *0x355" should say the line goes from 0x300 to 0x400.
- This also insures that we never give a range like "starts at 0x134
- and ends at 0x12c". */
-
- found_sal = find_pc_sect_line (startaddr, sal.section, 0);
- if (found_sal.line != sal.line)
- {
- /* The specified line (sal) has zero bytes. */
- *startptr = found_sal.pc;
- *endptr = found_sal.pc;
- }
- else
- {
- *startptr = found_sal.pc;
- *endptr = found_sal.end;
- }
- return 1;
-}
-
-/* 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)
- {
- /* Return the first (lowest address) entry which matches. */
- *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;
-}
-
-/* Given a function symbol SYM, find the symtab and line for the start
- of the function.
- 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 PARAMS ((struct symbol *sym, int));
-
-static struct symtab_and_line
-find_function_start_sal (sym, funfirstline)
- struct symbol *sym;
- int funfirstline;
-{
- CORE_ADDR pc;
- struct symtab_and_line sal;
-
- pc = BLOCK_START (SYMBOL_BLOCK_VALUE (sym));
- fixup_symbol_section (sym, NULL);
- if (funfirstline)
- { /* skip "first line" of function (which is actually its prologue) */
- asection *section = SYMBOL_BFD_SECTION (sym);
- /* If function is in an unmapped overlay, use its unmapped LMA
- address, so that SKIP_PROLOGUE has something unique to work on */
- if (section_is_overlay (section) &&
- !section_is_mapped (section))
- pc = overlay_unmapped_address (pc, section);
-
- pc += FUNCTION_START_OFFSET;
- SKIP_PROLOGUE (pc);
-
- /* For overlays, map pc back into its mapped VMA range */
- pc = overlay_mapped_address (pc, section);
- }
- sal = find_pc_sect_line (pc, SYMBOL_BFD_SECTION (sym), 0);
-
-#ifdef PROLOGUE_FIRSTLINE_OVERLAP
- /* Convex: no need to suppress code on first line, if any */
- sal.pc = pc;
-#else
- /* Check if SKIP_PROLOGUE left us in mid-line, and the next
- line is still part of the same function. */
- if (sal.pc != pc
- && BLOCK_START (SYMBOL_BLOCK_VALUE (sym)) <= sal.end
- && sal.end < BLOCK_END (SYMBOL_BLOCK_VALUE (sym)))
- {
- /* First pc of next line */
- pc = sal.end;
- /* Recalculate the line number (might not be N+1). */
- sal = find_pc_sect_line (pc, SYMBOL_BFD_SECTION (sym), 0);
- }
- sal.pc = pc;
-#endif
-
- 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.
- Otherwise, return "". */
-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;
-}
-
-/* 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 PARAMS ((struct type *type));
-
-static int
-total_number_of_methods (type)
- 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 (t, name, sym_arr)
- 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 (sal, symname, canonical)
- 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;
-}
-
-/* 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, 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 (argptr, funfirstline, default_symtab, default_line, canonical)
- 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;
- 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;
- int is_quoted, has_parens;
- 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;
- }
-
- /* Maybe arg is FILE : LINENUM or FILE : FUNCTION */
-
- s = NULL;
- is_quoted = (**argptr
- && strchr (gdb_completer_quote_characters, **argptr) != NULL);
- has_parens = ((pp = strchr (*argptr, '(')) != NULL
- && (pp = strchr (pp, ')')) != NULL);
-
- for (p = *argptr; *p; p++)
- {
- if (p[0] == '<')
- {
- while(++p && *p != '>');
- if (!p)
- {
- error ("non-matching '<' and '>' in command");
- }
- }
- if (p[0] == ':' || p[0] == ' ' || p[0] == '\t')
- break;
- /* start-sanitize-java */
- 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;
- }
- /* end-sanitize-java */
- }
- while (p[0] == ' ' || p[0] == '\t') p++;
-
- if ((p[0] == ':' || p[0] == '.') && !has_parens)
- {
- /* C++ */
- /* start-sanitize-java */
- /* ... or Java */
- /* end-sanitize-java */
- if (is_quoted) *argptr = *argptr+1;
- if (p[0] == '.' || p[1] ==':')
- {
- struct symbol *sym_class;
-
- /* 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 &&
- (TYPE_CODE (SYMBOL_TYPE (sym_class)) == TYPE_CODE_STRUCT
- || TYPE_CODE (SYMBOL_TYPE (sym_class)) == TYPE_CODE_UNION))
- {
- struct symbol **sym_arr;
- struct type *t;
- int i1;
-
- t = check_typedef (SYMBOL_TYPE (sym_class));
-
- /* 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);
- }
- }
- else
- {
- error_begin ();
- /* The quotes are important if copy is empty. */
- printf_filtered
- ("can't find 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;
- copy = (char *) alloca (p - *argptr + 1);
- 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;
- }
-
- /* 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 == '$') /* Convenience variable */
- p = skip_quoted (*argptr + 1);
- 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);
- }
-
- 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;
-
- /* See if it's a convenience variable */
-
- if (*copy == '$')
- {
- value_ptr valx;
- int 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.");
-
- 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);
-
- 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);
- 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;
- 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 (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,
- (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 (sym_arr, nelts, funfirstline, canonical)
- 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 ("cancelled");
- 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.
- 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;
-{
- /* 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 (STREQ (*p, name))
- /* 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)
- {
- *first = 0;
- }
- else
- {
- printf_filtered (", ");
- }
-
- wrap_here ("");
- fputs_filtered (name, gdb_stdout);
-}
-
-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
-file_matches (file, files, nfiles)
- char *file;
- char *files[];
- int nfiles;
-{
- int i;
-
- if (file != NULL && nfiles != 0)
- {
- for (i = 0; i < nfiles; i++)
- {
- if (strcmp (files[i], basename (file)) == 0)
- return 1;
- }
- }
- else if (nfiles == 0)
- return 1;
- return 0;
-}
-
-/* Free any memory associated with a search. */
-void
-free_search_symbols (symbols)
- struct symbol_search *symbols;
-{
- struct symbol_search *p;
- struct symbol_search *next;
-
- for (p = symbols; p != NULL; p = next)
- {
- next = p->next;
- free (p);
- }
-}
-
-/* Search the symbol table for matches to the regular expression REGEXP,
- returning the results in *MATCHES.
-
- Only symbols of KIND are searched:
- FUNCTIONS_NAMESPACE - search all functions
- TYPES_NAMESPACE - search all type names
- METHODS_NAMESPACE - search all methods NOT IMPLEMENTED
- VARIABLES_NAMESPACE - search all symbols, excluding functions, type names,
- and constants (enums)
-
- free_search_symbols should be called when *MATCHES is no longer needed.
-*/
-void
-search_symbols (regexp, kind, nfiles, files, matches)
- char *regexp;
- namespace_enum kind;
- int nfiles;
- char *files[];
- struct symbol_search **matches;
-
-{
- 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 = 0;
- register int j;
- register struct symbol *sym;
- struct partial_symbol **psym;
- struct objfile *objfile;
- struct minimal_symbol *msymbol;
- char *val;
- 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_file_text, mst_abs, mst_unknown};
- static enum minimal_symbol_type types3[]
- = {mst_file_data, mst_solib_trampoline, mst_abs, mst_unknown};
- static enum minimal_symbol_type types4[]
- = {mst_file_bss, mst_text, mst_abs, mst_unknown};
- enum minimal_symbol_type ourtype;
- enum minimal_symbol_type ourtype2;
- enum minimal_symbol_type ourtype3;
- enum minimal_symbol_type ourtype4;
- struct symbol_search *sr;
- struct symbol_search *psr;
- struct symbol_search *tail;
- struct cleanup *old_chain = NULL;
-
- if (kind < LABEL_NAMESPACE)
- error ("must search on specific namespace");
-
- ourtype = types[(int) (kind - LABEL_NAMESPACE)];
- ourtype2 = types2[(int) (kind - LABEL_NAMESPACE)];
- ourtype3 = types3[(int) (kind - LABEL_NAMESPACE)];
- ourtype4 = types4[(int) (kind - LABEL_NAMESPACE)];
-
- sr = *matches = NULL;
- tail = NULL;
-
- if (regexp != NULL)
- {
- /* 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 (file_matches (ps->filename, files, nfiles)
- && ((regexp == NULL || SYMBOL_MATCHES_REGEXP (*psym))
- && ((kind == VARIABLES_NAMESPACE && SYMBOL_CLASS (*psym) != LOC_TYPEDEF
- && SYMBOL_CLASS (*psym) != LOC_BLOCK)
- || (kind == FUNCTIONS_NAMESPACE && SYMBOL_CLASS (*psym) == LOC_BLOCK)
- || (kind == TYPES_NAMESPACE && SYMBOL_CLASS (*psym) == LOC_TYPEDEF)
- || (kind == METHODS_NAMESPACE && SYMBOL_CLASS (*psym) == LOC_BLOCK))))
- {
- PSYMTAB_TO_SYMTAB(ps);
- keep_going = 0;
- }
- }
- psym++;
- }
- }
-
- /* Here, we search through the minimal symbol tables for functions
- and variables that match, and force their symbols to be read.
- This is in particular necessary for demangled variable names,
- which are no longer put into the partial symbol tables.
- The symbol will then be found during the scan of symtabs below.
-
- For functions, find_pc_symtab should succeed if we have debug info
- for the function, for variables we have to call lookup_symbol
- to determine if the variable has debug info.
- If the lookup fails, set found_misc so that we will rescan to print
- any matching symbols without debug info.
- */
-
- if (nfiles == 0 && (kind == VARIABLES_NAMESPACE || kind == FUNCTIONS_NAMESPACE))
- {
- ALL_MSYMBOLS (objfile, msymbol)
- {
- if (MSYMBOL_TYPE (msymbol) == ourtype ||
- MSYMBOL_TYPE (msymbol) == ourtype2 ||
- MSYMBOL_TYPE (msymbol) == ourtype3 ||
- MSYMBOL_TYPE (msymbol) == ourtype4)
- {
- if (regexp == NULL || SYMBOL_MATCHES_REGEXP (msymbol))
- {
- if (0 == find_pc_symtab (SYMBOL_VALUE_ADDRESS (msymbol)))
- {
- if (kind == FUNCTIONS_NAMESPACE
- || lookup_symbol (SYMBOL_NAME (msymbol),
- (struct block *) NULL,
- VAR_NAMESPACE,
- 0, (struct symtab **) NULL) == NULL)
- found_misc = 1;
- }
- }
- }
- }
- }
-
- ALL_SYMTABS (objfile, s)
- {
- 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 (file_matches (s->filename, files, nfiles)
- && ((regexp == NULL || SYMBOL_MATCHES_REGEXP (sym))
- && ((kind == VARIABLES_NAMESPACE && SYMBOL_CLASS (sym) != LOC_TYPEDEF
- && SYMBOL_CLASS (sym) != LOC_BLOCK
- && SYMBOL_CLASS (sym) != LOC_CONST)
- || (kind == FUNCTIONS_NAMESPACE && SYMBOL_CLASS (sym) == LOC_BLOCK)
- || (kind == TYPES_NAMESPACE && SYMBOL_CLASS (sym) == LOC_TYPEDEF)
- || (kind == METHODS_NAMESPACE && SYMBOL_CLASS (sym) == LOC_BLOCK))))
- {
- /* match */
- psr = (struct symbol_search *) xmalloc (sizeof (struct symbol_search));
- psr->block = i;
- psr->symtab = s;
- psr->symbol = sym;
- psr->msymbol = NULL;
- psr->next = NULL;
- if (tail == NULL)
- {
- sr = psr;
- old_chain = make_cleanup ((make_cleanup_func)
- free_search_symbols, sr);
- }
- else
- tail->next = psr;
- tail = psr;
- }
- }
- }
- 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 || kind != FUNCTIONS_NAMESPACE)
- {
- ALL_MSYMBOLS (objfile, msymbol)
- {
- if (MSYMBOL_TYPE (msymbol) == ourtype ||
- MSYMBOL_TYPE (msymbol) == ourtype2 ||
- MSYMBOL_TYPE (msymbol) == ourtype3 ||
- MSYMBOL_TYPE (msymbol) == ourtype4)
- {
- if (regexp == NULL || SYMBOL_MATCHES_REGEXP (msymbol))
- {
- /* Functions: Look up by address. */
- if (kind != FUNCTIONS_NAMESPACE ||
- (0 == find_pc_symtab (SYMBOL_VALUE_ADDRESS (msymbol))))
- {
- /* Variables/Absolutes: Look up by name */
- if (lookup_symbol (SYMBOL_NAME (msymbol),
- (struct block *) NULL, VAR_NAMESPACE,
- 0, (struct symtab **) NULL) == NULL)
- {
- /* match */
- psr = (struct symbol_search *) xmalloc (sizeof (struct symbol_search));
- psr->block = i;
- psr->msymbol = msymbol;
- psr->symtab = NULL;
- psr->symbol = NULL;
- psr->next = NULL;
- if (tail == NULL)
- {
- sr = psr;
- old_chain = make_cleanup ((make_cleanup_func)
- free_search_symbols, &sr);
- }
- else
- tail->next = psr;
- tail = psr;
- }
- }
- }
- }
- }
- }
-
- *matches = sr;
- if (sr != NULL)
- discard_cleanups (old_chain);
-}
-
-/* Helper function for symtab_symbol_info, this function uses
- the data returned from search_symbols() to print information
- regarding the match to gdb_stdout.
-*/
-static void
-print_symbol_info (kind, s, sym, block, last)
- namespace_enum kind;
- struct symtab *s;
- struct symbol *sym;
- int block;
- char *last;
-{
- if (last == NULL || strcmp (last, s->filename) != 0)
- {
- fputs_filtered ("\nFile ", gdb_stdout);
- fputs_filtered (s->filename, gdb_stdout);
- fputs_filtered (":\n", gdb_stdout);
- }
-
- if (kind != TYPES_NAMESPACE && block == STATIC_BLOCK)
- printf_filtered ("static ");
-
- /* Typedef that is not a C++ class */
- if (kind == TYPES_NAMESPACE
- && SYMBOL_NAMESPACE (sym) != STRUCT_NAMESPACE)
- c_typedef_print (SYMBOL_TYPE(sym), sym, gdb_stdout);
- /* variable, func, or typedef-that-is-c++-class */
- else if (kind < TYPES_NAMESPACE ||
- (kind == TYPES_NAMESPACE &&
- SYMBOL_NAMESPACE(sym) == STRUCT_NAMESPACE))
- {
- type_print (SYMBOL_TYPE (sym),
- (SYMBOL_CLASS (sym) == LOC_TYPEDEF
- ? "" : SYMBOL_SOURCE_NAME (sym)),
- gdb_stdout, 0);
-
- printf_filtered (";\n");
- }
- else
- {
-# if 0
- /* Tiemann says: "info methods was never implemented." */
- char *demangled_name;
- c_type_print_base (TYPE_FN_FIELD_TYPE(t, block),
- gdb_stdout, 0, 0);
- c_type_print_varspec_prefix (TYPE_FN_FIELD_TYPE(t, block),
- gdb_stdout, 0);
- if (TYPE_FN_FIELD_STUB (t, block))
- check_stub_method (TYPE_DOMAIN_TYPE (type), j, block);
- demangled_name =
- cplus_demangle (TYPE_FN_FIELD_PHYSNAME (t, block),
- DMGL_ANSI | DMGL_PARAMS);
- if (demangled_name == NULL)
- fprintf_filtered (stream, "<badly mangled name %s>",
- TYPE_FN_FIELD_PHYSNAME (t, block));
- else
- {
- fputs_filtered (demangled_name, stream);
- free (demangled_name);
- }
-# endif
- }
-}
-
-/* This help function for symtab_symbol_info() prints information
- for non-debugging symbols to gdb_stdout.
-*/
-static void
-print_msymbol_info (msymbol)
- struct minimal_symbol *msymbol;
-{
- printf_filtered (" %08lx %s\n",
- (unsigned long) SYMBOL_VALUE_ADDRESS (msymbol),
- SYMBOL_SOURCE_NAME (msymbol));
-}
-
-/* This is the guts of the commands "info functions", "info types", and
- "info variables". It calls search_symbols to find all matches and then
- print_[m]symbol_info to print out some useful information about the
- matches.
-*/
-static void
-symtab_symbol_info (regexp, kind, from_tty)
- char *regexp;
- namespace_enum kind;
- int from_tty;
-{
- static char *classnames[]
- = {"variable", "function", "type", "method"};
- struct symbol_search *symbols;
- struct symbol_search *p;
- struct cleanup *old_chain;
- char *last_filename = NULL;
- int first = 1;
-
- /* must make sure that if we're interrupted, symbols gets freed */
- search_symbols (regexp, kind, 0, (char **) NULL, &symbols);
- old_chain = make_cleanup ((make_cleanup_func) free_search_symbols, symbols);
-
- printf_filtered (regexp
- ? "All %ss matching regular expression \"%s\":\n"
- : "All defined %ss:\n",
- classnames[(int) (kind - LABEL_NAMESPACE - 1)], regexp);
-
- for (p = symbols; p != NULL; p = p->next)
- {
- QUIT;
-
- if (p->msymbol != NULL)
- {
- if (first)
- {
- printf_filtered ("\nNon-debugging symbols:\n");
- first = 0;
- }
- print_msymbol_info (p->msymbol);
- }
- else
- {
- print_symbol_info (kind,
- p->symtab,
- p->symbol,
- p->block,
- last_filename);
- last_filename = p->symtab->filename;
- }
- }
-
- do_cleanups (old_chain);
-}
-
-static void
-variables_info (regexp, from_tty)
- char *regexp;
- int from_tty;
-{
- symtab_symbol_info (regexp, VARIABLES_NAMESPACE, from_tty);
-}
-
-static void
-functions_info (regexp, from_tty)
- char *regexp;
- int from_tty;
-{
- symtab_symbol_info (regexp, FUNCTIONS_NAMESPACE, from_tty);
-}
-
-static void
-types_info (regexp, from_tty)
- char *regexp;
- int from_tty;
-{
- symtab_symbol_info (regexp, TYPES_NAMESPACE, from_tty);
-}
-
-#if 0
-/* Tiemann says: "info methods was never implemented." */
-static void
-methods_info (regexp)
- char *regexp;
-{
- symtab_symbol_info (regexp, METHODS_NAMESPACE, 0, from_tty);
-}
-#endif /* 0 */
-
-/* Breakpoint all functions matching regular expression. */
-static void
-rbreak_command (regexp, from_tty)
- char *regexp;
- int from_tty;
-{
- struct symbol_search *ss;
- struct symbol_search *p;
- struct cleanup *old_chain;
-
- search_symbols (regexp, FUNCTIONS_NAMESPACE, 0, (char **) NULL, &ss);
- old_chain = make_cleanup ((make_cleanup_func) free_search_symbols, ss);
-
- for (p = ss; p != NULL; p = p->next)
- {
- if (p->msymbol == NULL)
- {
- char *string = (char *) alloca (strlen (p->symtab->filename)
- + strlen (SYMBOL_NAME (p->symbol))
- + 4);
- strcpy (string, p->symtab->filename);
- strcat (string, ":'");
- strcat (string, SYMBOL_NAME (p->symbol));
- strcat (string, "'");
- break_command (string, from_tty);
- print_symbol_info (FUNCTIONS_NAMESPACE,
- p->symtab,
- p->symbol,
- p->block,
- p->symtab->filename);
- }
- else
- {
- break_command (SYMBOL_NAME (p->msymbol), from_tty);
- printf_filtered ("<function, no debug info> %s;\n",
- SYMBOL_SOURCE_NAME (p->msymbol));
- }
- }
-
- do_cleanups (old_chain);
-}
-
-
-/* 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. */
-
-static int return_val_size;
-static int return_val_index;
-static char **return_val;
-
-#define COMPLETION_LIST_ADD_SYMBOL(symbol, sym_text, len, text, word) \
- do { \
- if (SYMBOL_DEMANGLED_NAME (symbol) != NULL) \
- /* Put only the mangled name on the list. */ \
- /* Advantage: "b foo<TAB>" completes to "b foo(int, int)" */ \
- /* Disadvantage: "b foo__i<TAB>" doesn't complete. */ \
- completion_list_add_name \
- (SYMBOL_DEMANGLED_NAME (symbol), (sym_text), (len), (text), (word)); \
- else \
- completion_list_add_name \
- (SYMBOL_NAME (symbol), (sym_text), (len), (text), (word)); \
- } while (0)
-
-/* Test to see if the symbol specified by SYMNAME (which is already
- demangled for C++ symbols) matches SYM_TEXT in the first SYM_TEXT_LEN
- characters. If so, add it to the current completion list. */
-
-static void
-completion_list_add_name (symname, sym_text, sym_text_len, text, word)
- char *symname;
- char *sym_text;
- int sym_text_len;
- char *text;
- char *word;
-{
- int newsize;
- int i;
-
- /* clip symbols that cannot match */
-
- if (strncmp (symname, sym_text, sym_text_len) != 0)
- {
- return;
- }
-
- /* Clip any symbol names that we've already considered. (This is a
- time optimization) */
-
- for (i = 0; i < return_val_index; ++i)
- {
- if (STREQ (symname, return_val[i]))
- {
- return;
- }
- }
-
- /* We have a match for a completion, so add SYMNAME to the current list
- of matches. Note that the name is moved to freshly malloc'd space. */
-
- {
- char *new;
- if (word == sym_text)
- {
- new = xmalloc (strlen (symname) + 5);
- strcpy (new, symname);
- }
- else if (word > sym_text)
- {
- /* Return some portion of symname. */
- new = xmalloc (strlen (symname) + 5);
- strcpy (new, symname + (word - sym_text));
- }
- else
- {
- /* Return some of SYM_TEXT plus symname. */
- new = xmalloc (strlen (symname) + (sym_text - word) + 5);
- strncpy (new, word, sym_text - word);
- new[sym_text - word] = '\0';
- strcat (new, symname);
- }
-
- /* Recheck for duplicates if we intend to add a modified symbol. */
- if (word != sym_text)
- {
- for (i = 0; i < return_val_index; ++i)
- {
- if (STREQ (new, return_val[i]))
- {
- free (new);
- return;
- }
- }
- }
-
- if (return_val_index + 3 > return_val_size)
- {
- newsize = (return_val_size *= 2) * sizeof (char *);
- return_val = (char **) xrealloc ((char *) return_val, newsize);
- }
- return_val[return_val_index++] = new;
- return_val[return_val_index] = 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, word)
- char *text;
- char *word;
-{
- register struct symbol *sym;
- 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;
- /* The symbol we are completing on. Points in same buffer as text. */
- char *sym_text;
- /* Length of sym_text. */
- int sym_text_len;
-
- /* Now look for the symbol we are supposed to complete on.
- FIXME: This should be language-specific. */
- {
- char *p;
- char quote_found;
- char *quote_pos = NULL;
-
- /* First see if this is a quoted string. */
- quote_found = '\0';
- for (p = text; *p != '\0'; ++p)
- {
- if (quote_found != '\0')
- {
- if (*p == quote_found)
- /* Found close quote. */
- quote_found = '\0';
- else if (*p == '\\' && p[1] == quote_found)
- /* A backslash followed by the quote character
- doesn't end the string. */
- ++p;
- }
- else if (*p == '\'' || *p == '"')
- {
- quote_found = *p;
- quote_pos = p;
- }
- }
- if (quote_found == '\'')
- /* A string within single quotes can be a symbol, so complete on it. */
- sym_text = quote_pos + 1;
- else if (quote_found == '"')
- /* A double-quoted string is never a symbol, nor does it make sense
- to complete it any other way. */
- return NULL;
- else
- {
- /* It is not a quoted string. Break it based on the characters
- which are in symbols. */
- while (p > text)
- {
- if (isalnum (p[-1]) || p[-1] == '_' || p[-1] == '\0')
- --p;
- else
- break;
- }
- sym_text = p;
- }
- }
-
- sym_text_len = strlen (sym_text);
-
- return_val_size = 100;
- return_val_index = 0;
- return_val = (char **) xmalloc ((return_val_size + 1) * sizeof (char *));
- return_val[0] = NULL;
-
- /* Look through the partial symtabs for all symbols which begin
- by matching SYM_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++)
- {
- /* If interrupted, then quit. */
- QUIT;
- COMPLETION_LIST_ADD_SYMBOL (*psym, sym_text, sym_text_len, text, word);
- }
-
- for (psym = objfile->static_psymbols.list + ps->statics_offset;
- psym < (objfile->static_psymbols.list + ps->statics_offset
- + ps->n_static_syms);
- psym++)
- {
- QUIT;
- COMPLETION_LIST_ADD_SYMBOL (*psym, sym_text, sym_text_len, text, word);
- }
- }
-
- /* At this point scan through the misc symbol vectors and add each
- symbol you find to the list. Eventually we want to ignore
- anything that isn't a text symbol (everything else will be
- handled by the psymtab code above). */
-
- ALL_MSYMBOLS (objfile, msymbol)
- {
- QUIT;
- COMPLETION_LIST_ADD_SYMBOL (msymbol, sym_text, sym_text_len, text, word);
- }
-
- /* Search upwards from currently selected frame (so that we can
- complete on local vars. */
-
- for (b = get_selected_block (); b != NULL; 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++)
- {
- sym = BLOCK_SYM (b, i);
- COMPLETION_LIST_ADD_SYMBOL (sym, sym_text, sym_text_len, text, word);
- 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))
- {
- completion_list_add_name (TYPE_FIELD_NAME (t, j),
- sym_text, sym_text_len, text, word);
- }
- }
- }
- }
- }
- }
-
- /* Go through the symtabs and check the externs and statics for
- symbols which match. */
-
- ALL_SYMTABS (objfile, s)
- {
- QUIT;
- b = BLOCKVECTOR_BLOCK (BLOCKVECTOR (s), GLOBAL_BLOCK);
- for (i = 0; i < BLOCK_NSYMS (b); i++)
- {
- sym = BLOCK_SYM (b, i);
- COMPLETION_LIST_ADD_SYMBOL (sym, sym_text, sym_text_len, text, word);
- }
- }
-
- ALL_SYMTABS (objfile, s)
- {
- QUIT;
- 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++)
- {
- sym = BLOCK_SYM (b, i);
- COMPLETION_LIST_ADD_SYMBOL (sym, sym_text, sym_text_len, text, word);
- }
- }
-
- return (return_val);
-}
-
-/* Determine if PC is in the prologue of a function. The prologue is the area
- between the first instruction of a function, and the first executable line.
- Returns 1 if PC *might* be in prologue, 0 if definately *not* in prologue.
-
- If non-zero, func_start is where we think the prologue starts, possibly
- by previous examination of symbol table information.
- */
-
-int
-in_prologue (pc, func_start)
- CORE_ADDR pc;
- CORE_ADDR func_start;
-{
- struct symtab_and_line sal;
- CORE_ADDR func_addr, func_end;
-
- if (!find_pc_partial_function (pc, NULL, &func_addr, &func_end))
- goto nosyms; /* Might be in prologue */
-
- sal = find_pc_line (func_addr, 0);
-
- if (sal.line == 0)
- goto nosyms;
-
- if (sal.end > func_addr
- && sal.end <= func_end) /* Is prologue in function? */
- return pc < sal.end; /* Yes, is pc in prologue? */
-
- /* The line after the prologue seems to be outside the function. In this
- case, tell the caller to find the prologue the hard way. */
-
- return 1;
-
-/* Come here when symtabs don't contain line # info. In this case, it is
- likely that the user has stepped into a library function w/o symbols, or
- is doing a stepi/nexti through code without symbols. */
-
- nosyms:
-
-/* If func_start is zero (meaning unknown) then we don't know whether pc is
- in the prologue or not. I.E. it might be. */
-
- if (!func_start) return 1;
-
-/* We need to call the target-specific prologue skipping functions with the
- function's start address because PC may be pointing at an instruction that
- could be mistakenly considered part of the prologue. */
-
- SKIP_PROLOGUE (func_start);
-
- return pc < func_start;
-}
-
-
-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 omitted, 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", class_breakpoint, 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);
-}
generated by cgit v1.1 at 2024-12-11 14:50:48 +0000