/* Partial symbol tables.
- Copyright (C) 2009-2013 Free Software Foundation, Inc.
+ Copyright (C) 2009-2014 Free Software Foundation, Inc.
This file is part of GDB.
#include "symtab.h"
#include "psympriv.h"
#include "objfiles.h"
-#include "gdb_assert.h"
#include "block.h"
#include "filenames.h"
#include "source.h"
const char *, int,
domain_enum);
-static char *psymtab_to_fullname (struct partial_symtab *ps);
+static const char *psymtab_to_fullname (struct partial_symtab *ps);
static struct partial_symbol *find_pc_sect_psymbol (struct objfile *,
struct partial_symtab *,
if (verbose)
{
printf_unfiltered (_("Reading symbols from %s..."),
- objfile->name);
+ objfile_name (objfile));
gdb_flush (gdb_stdout);
}
(*objfile->sf->sym_read_psymbols) (objfile);
static int
partial_map_expand_apply (struct objfile *objfile,
const char *name,
- const char *full_path,
const char *real_path,
struct partial_symtab *pst,
int (*callback) (struct symtab *, void *),
all of them. */
psymtab_to_symtab (objfile, pst);
- return iterate_over_some_symtabs (name, full_path, real_path, callback, data,
+ return iterate_over_some_symtabs (name, real_path, callback, data,
objfile->symtabs, last_made);
}
static int
partial_map_symtabs_matching_filename (struct objfile *objfile,
const char *name,
- const char *full_path,
const char *real_path,
int (*callback) (struct symtab *,
void *),
{
struct partial_symtab *pst;
const char *name_basename = lbasename (name);
- int is_abs = IS_ABSOLUTE_PATH (name);
ALL_OBJFILE_PSYMTABS_REQUIRED (objfile, pst)
{
if (pst->anonymous)
continue;
- if (FILENAME_CMP (name, pst->filename) == 0
- || (!is_abs && compare_filenames_for_search (pst->filename, name)))
+ if (compare_filenames_for_search (pst->filename, name))
{
- if (partial_map_expand_apply (objfile, name, full_path, real_path,
+ if (partial_map_expand_apply (objfile, name, real_path,
pst, callback, data))
return 1;
+ continue;
}
/* Before we invoke realpath, which can get expensive when many
&& FILENAME_CMP (name_basename, lbasename (pst->filename)) != 0)
continue;
- /* If the user gave us an absolute path, try to find the file in
- this symtab and use its absolute path. */
- if (full_path != NULL)
+ if (compare_filenames_for_search (psymtab_to_fullname (pst), name))
{
- psymtab_to_fullname (pst);
- if (pst->fullname != NULL
- && (FILENAME_CMP (full_path, pst->fullname) == 0
- || (!is_abs && compare_filenames_for_search (pst->fullname,
- name))))
- {
- if (partial_map_expand_apply (objfile, name, full_path, real_path,
- pst, callback, data))
- return 1;
- }
+ if (partial_map_expand_apply (objfile, name, real_path,
+ pst, callback, data))
+ return 1;
+ continue;
}
+ /* If the user gave us an absolute path, try to find the file in
+ this symtab and use its absolute path. */
if (real_path != NULL)
{
- char *rp = NULL;
- psymtab_to_fullname (pst);
- if (pst->fullname != NULL)
- {
- rp = gdb_realpath (pst->fullname);
- make_cleanup (xfree, rp);
- }
- if (rp != NULL
- && (FILENAME_CMP (real_path, rp) == 0
- || (!is_abs && compare_filenames_for_search (real_path, name))))
+ gdb_assert (IS_ABSOLUTE_PATH (real_path));
+ gdb_assert (IS_ABSOLUTE_PATH (name));
+ if (filename_cmp (psymtab_to_fullname (pst), real_path) == 0)
{
- if (partial_map_expand_apply (objfile, name, full_path, real_path,
+ if (partial_map_expand_apply (objfile, name, real_path,
pst, callback, data))
return 1;
+ continue;
}
}
}
find_pc_sect_psymtab_closer (struct objfile *objfile,
CORE_ADDR pc, struct obj_section *section,
struct partial_symtab *pst,
- struct minimal_symbol *msymbol)
+ struct bound_minimal_symbol msymbol)
{
struct partial_symtab *tpst;
struct partial_symtab *best_pst = pst;
section == 0) /* Can't validate section this way. */
return pst;
- if (msymbol == NULL)
+ if (msymbol.minsym == NULL)
return (pst);
/* The code range of partial symtabs sometimes overlap, so, in
p = find_pc_sect_psymbol (objfile, tpst, pc, section);
if (p != NULL
&& SYMBOL_VALUE_ADDRESS (p)
- == SYMBOL_VALUE_ADDRESS (msymbol))
+ == BMSYMBOL_VALUE_ADDRESS (msymbol))
return tpst;
/* Also accept the textlow value of a psymtab as a
static struct partial_symtab *
find_pc_sect_psymtab (struct objfile *objfile, CORE_ADDR pc,
struct obj_section *section,
- struct minimal_symbol *msymbol)
+ struct bound_minimal_symbol msymbol)
{
struct partial_symtab *pst;
/* FIXME: addrmaps currently do not handle overlayed sections,
so fall back to the non-addrmap case if we're debugging
overlays and the addrmap returned the wrong section. */
- if (overlay_debugging && msymbol && section)
+ if (overlay_debugging && msymbol.minsym && section)
{
struct partial_symbol *p;
p = find_pc_sect_psymbol (objfile, pst, pc, section);
if (!p
|| SYMBOL_VALUE_ADDRESS (p)
- != SYMBOL_VALUE_ADDRESS (msymbol))
+ != BMSYMBOL_VALUE_ADDRESS (msymbol))
goto next;
}
static struct symtab *
find_pc_sect_symtab_from_partial (struct objfile *objfile,
- struct minimal_symbol *msymbol,
+ struct bound_minimal_symbol msymbol,
CORE_ADDR pc, struct obj_section *section,
int warn_if_readin)
{
{
p = *pp;
if (SYMBOL_DOMAIN (p) == VAR_DOMAIN
- && SYMBOL_CLASS (p) == LOC_BLOCK
+ && PSYMBOL_CLASS (p) == LOC_BLOCK
&& pc >= SYMBOL_VALUE_ADDRESS (p)
&& (SYMBOL_VALUE_ADDRESS (p) > best_pc
|| (psymtab->textlow == 0
if (section) /* Match on a specific section. */
{
fixup_psymbol_section (p, objfile);
- if (!matching_obj_sections (SYMBOL_OBJ_SECTION (p), section))
+ if (!matching_obj_sections (SYMBOL_OBJ_SECTION (objfile, p),
+ section))
continue;
}
best_pc = SYMBOL_VALUE_ADDRESS (p);
{
p = *pp;
if (SYMBOL_DOMAIN (p) == VAR_DOMAIN
- && SYMBOL_CLASS (p) == LOC_BLOCK
+ && PSYMBOL_CLASS (p) == LOC_BLOCK
&& pc >= SYMBOL_VALUE_ADDRESS (p)
&& (SYMBOL_VALUE_ADDRESS (p) > best_pc
|| (psymtab->textlow == 0
if (section) /* Match on a specific section. */
{
fixup_psymbol_section (p, objfile);
- if (!matching_obj_sections (SYMBOL_OBJ_SECTION (p), section))
+ if (!matching_obj_sections (SYMBOL_OBJ_SECTION (objfile, p),
+ section))
continue;
}
best_pc = SYMBOL_VALUE_ADDRESS (p);
{
CORE_ADDR addr;
- if (psym == NULL || SYMBOL_OBJ_SECTION (psym) != NULL)
+ if (!psym)
+ return;
+
+ if (SYMBOL_SECTION (psym) >= 0)
return;
gdb_assert (objfile);
- switch (SYMBOL_CLASS (psym))
+ switch (PSYMBOL_CLASS (psym))
{
case LOC_STATIC:
case LOC_LABEL:
information (but NAME might contain it). */
if (stab->primary)
{
- struct blockvector *bv = BLOCKVECTOR (stab);
+ const struct blockvector *bv = BLOCKVECTOR (stab);
struct block *block = BLOCKVECTOR_BLOCK (bv, block_index);
sym = lookup_block_symbol (block, name, domain);
{
struct cleanup *back_to = increment_reading_symtab ();
- (*pst->read_symtab) (objfile, pst);
+ (*pst->read_symtab) (pst, objfile);
do_cleanups (back_to);
}
static void
relocate_psymtabs (struct objfile *objfile,
- struct section_offsets *new_offsets,
- struct section_offsets *delta)
+ const struct section_offsets *new_offsets,
+ const struct section_offsets *delta)
{
struct partial_symbol **psym;
struct partial_symtab *p;
fputs_filtered ("<invalid domain>, ", outfile);
break;
}
- switch (SYMBOL_CLASS (*p))
+ switch (PSYMBOL_CLASS (*p))
{
case LOC_UNDEF:
fputs_filtered ("undefined", outfile);
gdb_print_host_address (psymtab, outfile);
fprintf_filtered (outfile, ")\n\n");
fprintf_unfiltered (outfile, " Read from object file %s (",
- objfile->name);
+ objfile_name (objfile));
gdb_print_host_address (objfile, outfile);
fprintf_unfiltered (outfile, ")\n");
}
static void
-read_psymtabs_with_filename (struct objfile *objfile, const char *filename)
+read_psymtabs_with_fullname (struct objfile *objfile, const char *fullname)
{
struct partial_symtab *p;
if (p->anonymous)
continue;
- if (filename_cmp (filename, p->filename) == 0)
+ /* psymtab_to_fullname tries to open the file which is slow.
+ Don't call it if we know the basenames don't match. */
+ if ((basenames_may_differ
+ || filename_cmp (lbasename (fullname), lbasename (p->filename)) == 0)
+ && filename_cmp (fullname, psymtab_to_fullname (p)) == 0)
psymtab_to_symtab (objfile, p);
}
}
If this function fails to find the file that this partial_symtab represents,
NULL will be returned and ps->fullname will be set to NULL. */
-static char *
+static const char *
psymtab_to_fullname (struct partial_symtab *ps)
{
- int r;
-
- if (!ps)
- return NULL;
- if (ps->anonymous)
- return NULL;
+ gdb_assert (!ps->anonymous);
/* Use cached copy if we have it.
We rely on forget_cached_source_info being called appropriately
to handle cases like the file being moved. */
- if (ps->fullname)
- return ps->fullname;
+ if (ps->fullname == NULL)
+ {
+ int fd = find_and_open_source (ps->filename, ps->dirname, &ps->fullname);
- r = find_and_open_source (ps->filename, ps->dirname, &ps->fullname);
+ if (fd >= 0)
+ close (fd);
+ else
+ {
+ char *fullname;
+ struct cleanup *back_to;
- if (r >= 0)
- {
- close (r);
- return ps->fullname;
- }
+ /* rewrite_source_path would be applied by find_and_open_source, we
+ should report the pathname where GDB tried to find the file. */
- return NULL;
-}
+ if (ps->dirname == NULL || IS_ABSOLUTE_PATH (ps->filename))
+ fullname = xstrdup (ps->filename);
+ else
+ fullname = concat (ps->dirname, SLASH_STRING, ps->filename, NULL);
-static const char *
-find_symbol_file_from_partial (struct objfile *objfile, const char *name)
-{
- struct partial_symtab *pst;
+ back_to = make_cleanup (xfree, fullname);
+ ps->fullname = rewrite_source_path (fullname);
+ if (ps->fullname == NULL)
+ ps->fullname = xstrdup (fullname);
+ do_cleanups (back_to);
+ }
+ }
- ALL_OBJFILE_PSYMTABS_REQUIRED (objfile, pst)
- {
- if (lookup_partial_symbol (objfile, pst, name, 1, VAR_DOMAIN))
- return pst->filename;
- }
- return NULL;
+ return ps->fullname;
}
/* For all symbols, s, in BLOCK that are in NAMESPACE and match NAME
the definition of quick_symbol_functions in symfile.h. */
static void
-map_matching_symbols_psymtab (const char *name, domain_enum namespace,
- struct objfile *objfile, int global,
+map_matching_symbols_psymtab (struct objfile *objfile,
+ const char *name, domain_enum namespace,
+ int global,
int (*callback) (struct block *,
struct symbol *, void *),
void *data,
recursively_search_psymtabs (struct partial_symtab *ps,
struct objfile *objfile,
enum search_domain kind,
- int (*name_matcher) (const char *, void *),
+ expand_symtabs_symbol_matcher_ftype *sym_matcher,
void *data)
{
struct partial_symbol **psym;
continue;
r = recursively_search_psymtabs (ps->dependencies[i],
- objfile, kind, name_matcher, data);
+ objfile, kind, sym_matcher, data);
if (r != 0)
{
ps->searched_flag = PST_SEARCHED_AND_FOUND;
if ((kind == ALL_DOMAIN
|| (kind == VARIABLES_DOMAIN
- && SYMBOL_CLASS (*psym) != LOC_TYPEDEF
- && SYMBOL_CLASS (*psym) != LOC_BLOCK)
+ && PSYMBOL_CLASS (*psym) != LOC_TYPEDEF
+ && PSYMBOL_CLASS (*psym) != LOC_BLOCK)
|| (kind == FUNCTIONS_DOMAIN
- && SYMBOL_CLASS (*psym) == LOC_BLOCK)
+ && PSYMBOL_CLASS (*psym) == LOC_BLOCK)
|| (kind == TYPES_DOMAIN
- && SYMBOL_CLASS (*psym) == LOC_TYPEDEF))
- && (*name_matcher) (SYMBOL_SEARCH_NAME (*psym), data))
+ && PSYMBOL_CLASS (*psym) == LOC_TYPEDEF))
+ && (*sym_matcher) (SYMBOL_SEARCH_NAME (*psym), data))
{
/* Found a match, so notify our caller. */
result = PST_SEARCHED_AND_FOUND;
static void
expand_symtabs_matching_via_partial
(struct objfile *objfile,
- int (*file_matcher) (const char *, void *),
- int (*name_matcher) (const char *, void *),
+ expand_symtabs_file_matcher_ftype *file_matcher,
+ expand_symtabs_symbol_matcher_ftype *symbol_matcher,
enum search_domain kind,
void *data)
{
if (file_matcher)
{
+ int match;
+
if (ps->anonymous)
continue;
- if (! (*file_matcher) (ps->filename, data))
+
+ match = (*file_matcher) (ps->filename, data, 0);
+ if (!match)
+ {
+ /* Before we invoke realpath, which can get expensive when many
+ files are involved, do a quick comparison of the basenames. */
+ if (basenames_may_differ
+ || (*file_matcher) (lbasename (ps->filename), data, 1))
+ match = (*file_matcher) (psymtab_to_fullname (ps), data, 0);
+ }
+ if (!match)
continue;
}
- if (recursively_search_psymtabs (ps, objfile, kind, name_matcher, data))
+ if (recursively_search_psymtabs (ps, objfile, kind, symbol_matcher, data))
psymtab_to_symtab (objfile, ps);
}
}
relocate_psymtabs,
read_symtabs_for_function,
expand_partial_symbol_tables,
- read_psymtabs_with_filename,
- find_symbol_file_from_partial,
+ read_psymtabs_with_fullname,
map_matching_symbols_psymtab,
expand_symtabs_matching_via_partial,
find_pc_sect_symtab_from_partial,
struct psymbol_bcache *
psymbol_bcache_init (void)
{
- struct psymbol_bcache *bcache = XCALLOC (1, struct psymbol_bcache);
+ struct psymbol_bcache *bcache = XCNEW (struct psymbol_bcache);
bcache->bcache = bcache_xmalloc (psymbol_hash, psymbol_compare);
return bcache;
}
{
struct partial_symbol psymbol;
- /* We must ensure that the entire 'value' field has been zeroed
- before assigning to it, because an assignment may not write the
- entire field. */
- memset (&psymbol.ginfo.value, 0, sizeof (psymbol.ginfo.value));
+ /* We must ensure that the entire struct has been zeroed before
+ assigning to it, because an assignment may not touch some of the
+ holes. */
+ memset (&psymbol, 0, sizeof (psymbol));
/* val and coreaddr are mutually exclusive, one of them *will* be zero. */
if (val != 0)
{
SYMBOL_VALUE_ADDRESS (&psymbol) = coreaddr;
}
- SYMBOL_SECTION (&psymbol) = 0;
- SYMBOL_OBJ_SECTION (&psymbol) = NULL;
- SYMBOL_SET_LANGUAGE (&psymbol, language);
+ SYMBOL_SECTION (&psymbol) = -1;
+ SYMBOL_SET_LANGUAGE (&psymbol, language, &objfile->objfile_obstack);
PSYMBOL_DOMAIN (&psymbol) = domain;
PSYMBOL_CLASS (&psymbol) = class;
/* Current best guess is that approximately a twentieth
of the total symbols (in a debugging file) are global or static
- oriented symbols. */
+ oriented symbols, then multiply that by slop factor of two. */
objfile->global_psymbols.size = total_symbols / 10;
objfile->static_psymbols.size = total_symbols / 10;
sizeof (struct partial_symtab));
memset (psymtab, 0, sizeof (struct partial_symtab));
- psymtab->filename = obsavestring (filename, strlen (filename),
- &objfile->objfile_obstack);
+ psymtab->filename = bcache (filename, strlen (filename) + 1,
+ objfile->per_bfd->filename_cache);
psymtab->symtab = NULL;
/* Prepend it to the psymtab list for the objfile it belongs to.
static char *last_objfile_name = NULL;
if (last_objfile_name == NULL
- || strcmp (last_objfile_name, objfile->name) != 0)
+ || strcmp (last_objfile_name, objfile_name (objfile)) != 0)
{
xfree (last_objfile_name);
- last_objfile_name = xstrdup (objfile->name);
+ last_objfile_name = xstrdup (objfile_name (objfile));
fprintf_unfiltered (gdb_stdlog,
"Creating one or more psymtabs for objfile %s ...\n",
last_objfile_name);
objfile->free_psymtabs = pst;
}
+/* An object of this type is passed to discard_psymtabs_upto. */
+
+struct psymtab_state
+{
+ /* The objfile where psymtabs are discarded. */
+
+ struct objfile *objfile;
+
+ /* The first psymtab to save. */
+
+ struct partial_symtab *save;
+};
+
+/* A cleanup function used by make_cleanup_discard_psymtabs. */
+
+static void
+discard_psymtabs_upto (void *arg)
+{
+ struct psymtab_state *state = arg;
+
+ while (state->objfile->psymtabs != state->save)
+ discard_psymtab (state->objfile, state->objfile->psymtabs);
+}
+
+/* Return a new cleanup that discards all psymtabs created in OBJFILE
+ after this function is called. */
+
+struct cleanup *
+make_cleanup_discard_psymtabs (struct objfile *objfile)
+{
+ struct psymtab_state *state = XNEW (struct psymtab_state);
+
+ state->objfile = objfile;
+ state->save = objfile->psymtabs;
+
+ return make_cleanup_dtor (discard_psymtabs_upto, state, xfree);
+}
+
\f
static void
{
if (! printed_objfile_start)
{
- printf_filtered ("{ objfile %s ", objfile->name);
+ printf_filtered ("{ objfile %s ", objfile_name (objfile));
wrap_here (" ");
printf_filtered ("((struct objfile *) %s)\n",
host_address_to_string (objfile));
}
}
-/* Check consistency of psymtabs and symtabs. */
+/* Check consistency of currently expanded psymtabs vs symtabs. */
static void
-maintenance_check_symtabs (char *ignore, int from_tty)
+maintenance_check_psymtabs (char *ignore, int from_tty)
{
struct symbol *sym;
struct partial_symbol **psym;
struct symtab *s = NULL;
struct partial_symtab *ps;
- struct blockvector *bv;
+ const struct blockvector *bv;
struct objfile *objfile;
struct block *b;
int length;
{
struct gdbarch *gdbarch = get_objfile_arch (objfile);
- s = psymtab_to_symtab (objfile, ps);
+ /* We don't call psymtab_to_symtab here because that may cause symtab
+ expansion. When debugging a problem it helps if checkers leave
+ things unchanged. */
+ s = ps->symtab;
+
+ /* First do some checks that don't require the associated symtab. */
+ if (ps->texthigh < ps->textlow)
+ {
+ printf_filtered ("Psymtab ");
+ puts_filtered (ps->filename);
+ printf_filtered (" covers bad range ");
+ fputs_filtered (paddress (gdbarch, ps->textlow), gdb_stdout);
+ printf_filtered (" - ");
+ fputs_filtered (paddress (gdbarch, ps->texthigh), gdb_stdout);
+ printf_filtered ("\n");
+ continue;
+ }
+
+ /* Now do checks requiring the associated symtab. */
if (s == NULL)
continue;
bv = BLOCKVECTOR (s);
}
psym++;
}
- if (ps->texthigh < ps->textlow)
- {
- printf_filtered ("Psymtab ");
- puts_filtered (ps->filename);
- printf_filtered (" covers bad range ");
- fputs_filtered (paddress (gdbarch, ps->textlow), gdb_stdout);
- printf_filtered (" - ");
- fputs_filtered (paddress (gdbarch, ps->texthigh), gdb_stdout);
- printf_filtered ("\n");
- continue;
- }
- if (ps->texthigh == 0)
- continue;
- if (ps->textlow < BLOCK_START (b) || ps->texthigh > BLOCK_END (b))
+ if (ps->texthigh != 0
+ && (ps->textlow < BLOCK_START (b) || ps->texthigh > BLOCK_END (b)))
{
printf_filtered ("Psymtab ");
puts_filtered (ps->filename);
\f
-void
-expand_partial_symbol_names (int (*fun) (const char *, void *),
- void *data)
-{
- struct objfile *objfile;
-
- ALL_OBJFILES (objfile)
- {
- if (objfile->sf)
- objfile->sf->qf->expand_symtabs_matching (objfile, NULL, fun,
- ALL_DOMAIN, data);
- }
-}
-
-void
-map_partial_symbol_filenames (symbol_filename_ftype *fun, void *data,
- int need_fullname)
-{
- struct objfile *objfile;
-
- ALL_OBJFILES (objfile)
- {
- if (objfile->sf)
- objfile->sf->qf->map_symbol_filenames (objfile, fun, data,
- need_fullname);
- }
-}
-
extern initialize_file_ftype _initialize_psymtab;
void
just the symbol table structures themselves."),
&maintenanceinfolist);
- add_cmd ("check-symtabs", class_maintenance, maintenance_check_symtabs,
- _("Check consistency of psymtabs and symtabs."),
+ add_cmd ("check-psymtabs", class_maintenance, maintenance_check_psymtabs,
+ _("\
+Check consistency of currently expanded psymtabs versus symtabs."),
&maintenancelist);
}
projects / platform / upstream / binutils.git / blobdiff