#include "language.h"
#include "demangle.h"
#include "inferior.h"
-#include "linespec.h"
#include "source.h"
#include "filenames.h" /* for FILENAME_CMP */
#include "objc-lang.h"
/* */
+/* When non-zero, print debugging messages related to symtab creation. */
+int symtab_create_debug = 0;
+
/* Non-zero if a file may be known by two different basenames.
This is the uncommon case, and significantly slows down gdb.
Default set to "off" to not slow down the common case. */
objfile->sf->qf->pre_expand_symtabs_matching (objfile, block_index,
name, domain);
- ALL_OBJFILE_SYMTABS (objfile, s)
- if (s->primary)
- {
- bv = BLOCKVECTOR (s);
- block = BLOCKVECTOR_BLOCK (bv, block_index);
- sym = lookup_block_symbol (block, name, domain);
- if (sym)
- {
- block_found = block;
- return fixup_symbol_section (sym, objfile);
- }
- }
+ ALL_OBJFILE_PRIMARY_SYMTABS (objfile, s)
+ {
+ bv = BLOCKVECTOR (s);
+ block = BLOCKVECTOR_BLOCK (bv, block_index);
+ sym = lookup_block_symbol (block, name, domain);
+ if (sym)
+ {
+ block_found = block;
+ return fixup_symbol_section (sym, objfile);
+ }
+ }
return NULL;
}
return NULL;
}
+/* Wrapper around lookup_symbol_aux_objfile for search_symbols.
+ Look up LINKAGE_NAME in DOMAIN in the global and static blocks of OBJFILE
+ and all related objfiles. */
+
+static struct symbol *
+lookup_symbol_in_objfile_from_linkage_name (struct objfile *objfile,
+ const char *linkage_name,
+ domain_enum domain)
+{
+ enum language lang = current_language->la_language;
+ const char *modified_name;
+ struct cleanup *cleanup = demangle_for_lookup (linkage_name, lang,
+ &modified_name);
+ struct objfile *main_objfile, *cur_objfile;
+
+ if (objfile->separate_debug_objfile_backlink)
+ main_objfile = objfile->separate_debug_objfile_backlink;
+ else
+ main_objfile = objfile;
+
+ for (cur_objfile = main_objfile;
+ cur_objfile;
+ cur_objfile = objfile_separate_debug_iterate (main_objfile, cur_objfile))
+ {
+ struct symbol *sym;
+
+ sym = lookup_symbol_aux_objfile (cur_objfile, GLOBAL_BLOCK,
+ modified_name, domain);
+ if (sym == NULL)
+ sym = lookup_symbol_aux_objfile (cur_objfile, STATIC_BLOCK,
+ modified_name, domain);
+ if (sym != NULL)
+ {
+ do_cleanups (cleanup);
+ return sym;
+ }
+ }
+
+ do_cleanups (cleanup);
+ return NULL;
+}
+
/* A helper function for lookup_symbol_aux that interfaces with the
"quick" symbol table functions. */
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.
+ for the function, for variables we have to call
+ lookup_symbol_in_objfile_from_linkage_name 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. */
+ any matching symbols without debug info.
+ We only search the objfile the msymbol came from, we no longer search
+ all objfiles. In large programs (1000s of shared libs) searching all
+ objfiles is not worth the pain. */
if (nfiles == 0 && (kind == VARIABLES_DOMAIN || kind == FUNCTIONS_DOMAIN))
{
{
QUIT;
+ if (msymbol->created_by_gdb)
+ continue;
+
if (MSYMBOL_TYPE (msymbol) == ourtype
|| MSYMBOL_TYPE (msymbol) == ourtype2
|| MSYMBOL_TYPE (msymbol) == ourtype3
|| regexec (&datum.preg, SYMBOL_NATURAL_NAME (msymbol), 0,
NULL, 0) == 0)
{
- if (0 == find_pc_symtab (SYMBOL_VALUE_ADDRESS (msymbol)))
- {
- /* FIXME: carlton/2003-02-04: Given that the
- semantics of lookup_symbol keeps on changing
- slightly, it would be a nice idea if we had a
- function lookup_symbol_minsym that found the
- symbol associated to a given minimal symbol (if
- any). */
- if (kind == FUNCTIONS_DOMAIN
- || lookup_symbol (SYMBOL_LINKAGE_NAME (msymbol),
- (struct block *) NULL,
- VAR_DOMAIN, 0)
- == NULL)
- found_misc = 1;
- }
+ /* Note: An important side-effect of these lookup functions
+ is to expand the symbol table if msymbol is found, for the
+ benefit of the next loop on ALL_PRIMARY_SYMTABS. */
+ if (kind == FUNCTIONS_DOMAIN
+ ? find_pc_symtab (SYMBOL_VALUE_ADDRESS (msymbol)) == NULL
+ : (lookup_symbol_in_objfile_from_linkage_name
+ (objfile, SYMBOL_LINKAGE_NAME (msymbol), VAR_DOMAIN)
+ == NULL))
+ found_misc = 1;
}
}
}
/* 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_DOMAIN)
+ if (found_misc || (nfiles == 0 && kind != FUNCTIONS_DOMAIN))
{
ALL_MSYMBOLS (objfile, msymbol)
{
QUIT;
+ if (msymbol->created_by_gdb)
+ continue;
+
if (MSYMBOL_TYPE (msymbol) == ourtype
|| MSYMBOL_TYPE (msymbol) == ourtype2
|| MSYMBOL_TYPE (msymbol) == ourtype3
|| regexec (&datum.preg, SYMBOL_NATURAL_NAME (msymbol), 0,
NULL, 0) == 0)
{
- /* Functions: Look up by address. */
- if (kind != FUNCTIONS_DOMAIN ||
- (0 == find_pc_symtab (SYMBOL_VALUE_ADDRESS (msymbol))))
+ /* For functions we can do a quick check of whether the
+ symbol might be found via find_pc_symtab. */
+ if (kind != FUNCTIONS_DOMAIN
+ || find_pc_symtab (SYMBOL_VALUE_ADDRESS (msymbol)) == NULL)
{
- /* Variables/Absolutes: Look up by name. */
- if (lookup_symbol (SYMBOL_LINKAGE_NAME (msymbol),
- (struct block *) NULL, VAR_DOMAIN, 0)
- == NULL)
+ if (lookup_symbol_in_objfile_from_linkage_name
+ (objfile, SYMBOL_LINKAGE_NAME (msymbol), VAR_DOMAIN)
+ == NULL)
{
/* match */
psr = (struct symbol_search *)
return prologue_sal.pc;
}
\f
-struct symtabs_and_lines
-decode_line_spec (char *string, int flags)
-{
- struct symtabs_and_lines sals;
- struct symtab_and_line cursal;
-
- if (string == 0)
- error (_("Empty line specification."));
-
- /* We use whatever is set as the current source line. We do not try
- and get a default or it will recursively call us! */
- cursal = get_current_source_symtab_and_line ();
-
- sals = decode_line_1 (&string, flags,
- cursal.symtab, cursal.line);
-
- if (*string)
- error (_("Junk at end of line specification: %s"), string);
- return sals;
-}
-
/* Track MAIN */
static char *name_of_main;
enum language language_of_main = language_unknown;
NULL, NULL,
&setlist, &showlist);
+ add_setshow_boolean_cmd ("symtab-create", no_class, &symtab_create_debug,
+ _("Set debugging of symbol table creation."),
+ _("Show debugging of symbol table creation."), _("\
+When enabled, debugging messages are printed when building symbol tables."),
+ NULL,
+ NULL,
+ &setdebuglist, &showdebuglist);
+
observer_attach_executable_changed (symtab_observer_executable_changed);
}
projects / deliverable / binutils-gdb.git / blobdiff