/* Partial symbol tables.
- Copyright (C) 2009, 2010 Free Software Foundation, Inc.
+ Copyright (C) 2009, 2010, 2011 Free Software Foundation, Inc.
This file is part of GDB.
#include "command.h"
#include "readline/readline.h"
#include "gdb_regex.h"
+#include "dictionary.h"
#ifndef DEV_TTY
#define DEV_TTY "/dev/tty"
#endif
+struct psymbol_bcache
+{
+ struct bcache *bcache;
+};
+
/* A fast way to get from a psymtab to its symtab (after the first time). */
#define PSYMTAB_TO_SYMTAB(pst) \
((pst) -> symtab != NULL ? (pst) -> symtab : psymtab_to_symtab (pst))
-/* Lookup a partial symbol. */
+static struct partial_symbol *match_partial_symbol (struct partial_symtab *,
+ int,
+ const char *, domain_enum,
+ symbol_compare_ftype *,
+ symbol_compare_ftype *);
+
static struct partial_symbol *lookup_partial_symbol (struct partial_symtab *,
const char *, int,
domain_enum);
if (overlay_debugging && msymbol && section)
{
struct partial_symbol *p;
+
/* NOTE: This assumes that every psymbol has a
corresponding msymbol, which is not necessarily
true; the debug info might be much richer than the
return NULL;
}
+/* Look in PST for a symbol in DOMAIN whose name matches NAME. Search
+ the global block of PST if GLOBAL, and otherwise the static block.
+ MATCH is the comparison operation that returns true iff MATCH (s,
+ NAME), where s is a SYMBOL_SEARCH_NAME. If ORDERED_COMPARE is
+ non-null, the symbols in the block are assumed to be ordered
+ according to it (allowing binary search). It must be compatible
+ with MATCH. Returns the symbol, if found, and otherwise NULL. */
+
+static struct partial_symbol *
+match_partial_symbol (struct partial_symtab *pst, int global,
+ const char *name, domain_enum domain,
+ symbol_compare_ftype *match,
+ symbol_compare_ftype *ordered_compare)
+{
+ struct partial_symbol **start, **psym;
+ struct partial_symbol **top, **real_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 && ordered_compare) /* 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 whose name might be
+ correct. At that point *all* partial symbols with an
+ appropriate name will be checked against the correct
+ domain. */
+
+ bottom = start;
+ top = start + length - 1;
+ real_top = top;
+ while (top > bottom)
+ {
+ center = bottom + (top - bottom) / 2;
+ gdb_assert (center < top);
+ if (!do_linear_search
+ && (SYMBOL_LANGUAGE (*center) == language_java))
+ do_linear_search = 1;
+ if (ordered_compare (SYMBOL_SEARCH_NAME (*center), name) >= 0)
+ top = center;
+ else
+ bottom = center + 1;
+ }
+ gdb_assert (top == bottom);
+
+ while (top <= real_top
+ && match (SYMBOL_SEARCH_NAME (*top), name) == 0)
+ {
+ if (symbol_matches_domain (SYMBOL_LANGUAGE (*top),
+ SYMBOL_DOMAIN (*top), domain))
+ 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 (symbol_matches_domain (SYMBOL_LANGUAGE (*psym),
+ SYMBOL_DOMAIN (*psym), domain)
+ && match (SYMBOL_SEARCH_NAME (*psym), name) == 0)
+ return *psym;
+ }
+ }
+
+ return NULL;
+}
+
+static void
+pre_expand_symtabs_matching_psymtabs (struct objfile *objfile,
+ int kind, const char *name,
+ domain_enum domain)
+{
+ /* Nothing. */
+}
+
/* Look, in partial_symtab PST, for symbol whose natural name is NAME.
- Check the global symbols if GLOBAL, the static symbols if not. */
+ Check the global symbols if GLOBAL, the static symbols if not. */
-struct partial_symbol *
+static struct partial_symbol *
lookup_partial_symbol (struct partial_symtab *pst, const char *name,
int global, domain_enum domain)
{
- struct partial_symbol *temp;
struct partial_symbol **start, **psym;
struct partial_symbol **top, **real_top, **bottom, **center;
int length = (global ? pst->n_global_syms : pst->n_static_syms);
{
center = bottom + (top - bottom) / 2;
if (!(center < top))
- internal_error (__FILE__, __LINE__, _("failed internal consistency check"));
+ internal_error (__FILE__, __LINE__,
+ _("failed internal consistency check"));
if (!do_linear_search
- && (SYMBOL_LANGUAGE (*center) == language_java))
+ && SYMBOL_LANGUAGE (*center) == language_java)
{
do_linear_search = 1;
}
}
}
if (!(top == bottom))
- internal_error (__FILE__, __LINE__, _("failed internal consistency check"));
+ internal_error (__FILE__, __LINE__,
+ _("failed internal consistency check"));
while (top <= real_top
&& SYMBOL_MATCHES_SEARCH_NAME (*top, name))
}
/* Can't use a binary search or else we found during the binary search that
- we should also do a linear search. */
+ we should also do a linear search. */
if (do_linear_search)
{
if (!pst->readin)
{
struct cleanup *back_to = increment_reading_symtab ();
+
(*pst->read_symtab) (pst);
do_cleanups (back_to);
}
static struct symtab *
find_last_source_symtab_from_partial (struct objfile *ofp)
{
- struct symtab *result;
struct partial_symtab *ps;
struct partial_symtab *cs_pst = 0;
{
const char *name = ps->filename;
int len = strlen (name);
+
if (!(len > 2 && (strcmp (&name[len - 2], ".h") == 0
|| strcmp (name, "<<C++-namespaces>>") == 0)))
cs_pst = ps;
{
int i;
struct partial_symtab *ps;
+
i = 0;
ALL_OBJFILE_PSYMTABS (objfile, ps)
{
void (*fun) (const char *, void *), void *data)
{
struct partial_symtab *ps;
+
ALL_OBJFILE_PSYMTABS (objfile, ps)
{
struct partial_symbol **psym;
continue;
fullname = psymtab_to_fullname (ps);
- (*fun) (fullname, ps->filename, data);
+ (*fun) (ps->filename, fullname, data);
}
}
return NULL;
}
-static char *
+static const char *
find_symbol_file_from_partial (struct objfile *objfile, const char *name)
{
struct partial_symtab *pst;
return NULL;
}
-/* Look, in partial_symtab PST, for symbol NAME in given namespace.
- Check the global symbols if GLOBAL, the static symbols if not.
- Do wild-card match if WILD. */
+/* For all symbols, s, in BLOCK that are in NAMESPACE and match NAME
+ according to the function MATCH, call CALLBACK(BLOCK, s, DATA).
+ BLOCK is assumed to come from OBJFILE. Returns 1 iff CALLBACK
+ ever returns non-zero, and otherwise returns 0. */
-static struct partial_symbol *
-ada_lookup_partial_symbol (struct partial_symtab *pst, const char *name,
- int global, domain_enum namespace, int wild,
- int (*wild_match) (const char *, int, const char *),
- int (*is_name_suffix) (const char *))
+static int
+map_block (const char *name, domain_enum namespace, struct objfile *objfile,
+ struct block *block,
+ int (*callback) (struct block *, struct symbol *, void *),
+ void *data, symbol_compare_ftype *match)
{
- struct partial_symbol **start;
- int name_len = strlen (name);
- int length = (global ? pst->n_global_syms : pst->n_static_syms);
- int i;
+ struct dict_iterator iter;
+ struct symbol *sym;
- if (length == 0)
+ for (sym = dict_iter_match_first (BLOCK_DICT (block), name, match, &iter);
+ sym != NULL; sym = dict_iter_match_next (name, match, &iter))
{
- return (NULL);
+ if (symbol_matches_domain (SYMBOL_LANGUAGE (sym),
+ SYMBOL_DOMAIN (sym), namespace))
+ {
+ if (callback (block, sym, data))
+ return 1;
+ }
}
- start = (global ?
- pst->objfile->global_psymbols.list + pst->globals_offset :
- pst->objfile->static_psymbols.list + pst->statics_offset);
-
- if (wild)
- {
- for (i = 0; i < length; i += 1)
- {
- struct partial_symbol *psym = start[i];
-
- if (symbol_matches_domain (SYMBOL_LANGUAGE (psym),
- SYMBOL_DOMAIN (psym), namespace)
- && (*wild_match) (name, name_len, SYMBOL_LINKAGE_NAME (psym)))
- return psym;
- }
- return NULL;
- }
- else
- {
- if (global)
- {
- int U;
- i = 0;
- U = length - 1;
- while (U - i > 4)
- {
- int M = (U + i) >> 1;
- struct partial_symbol *psym = start[M];
- if (SYMBOL_LINKAGE_NAME (psym)[0] < name[0])
- i = M + 1;
- else if (SYMBOL_LINKAGE_NAME (psym)[0] > name[0])
- U = M - 1;
- else if (strcmp (SYMBOL_LINKAGE_NAME (psym), name) < 0)
- i = M + 1;
- else
- U = M;
- }
- }
- else
- i = 0;
-
- while (i < length)
- {
- struct partial_symbol *psym = start[i];
-
- if (symbol_matches_domain (SYMBOL_LANGUAGE (psym),
- SYMBOL_DOMAIN (psym), namespace))
- {
- int cmp = strncmp (name, SYMBOL_LINKAGE_NAME (psym), name_len);
-
- if (cmp < 0)
- {
- if (global)
- break;
- }
- else if (cmp == 0
- && (*is_name_suffix) (SYMBOL_LINKAGE_NAME (psym)
- + name_len))
- return psym;
- }
- i += 1;
- }
-
- if (global)
- {
- int U;
- i = 0;
- U = length - 1;
- while (U - i > 4)
- {
- int M = (U + i) >> 1;
- struct partial_symbol *psym = start[M];
- if (SYMBOL_LINKAGE_NAME (psym)[0] < '_')
- i = M + 1;
- else if (SYMBOL_LINKAGE_NAME (psym)[0] > '_')
- U = M - 1;
- else if (strcmp (SYMBOL_LINKAGE_NAME (psym), "_ada_") < 0)
- i = M + 1;
- else
- U = M;
- }
- }
- else
- i = 0;
-
- while (i < length)
- {
- struct partial_symbol *psym = start[i];
-
- if (symbol_matches_domain (SYMBOL_LANGUAGE (psym),
- SYMBOL_DOMAIN (psym), namespace))
- {
- int cmp;
-
- cmp = (int) '_' - (int) SYMBOL_LINKAGE_NAME (psym)[0];
- if (cmp == 0)
- {
- cmp = strncmp ("_ada_", SYMBOL_LINKAGE_NAME (psym), 5);
- if (cmp == 0)
- cmp = strncmp (name, SYMBOL_LINKAGE_NAME (psym) + 5,
- name_len);
- }
-
- if (cmp < 0)
- {
- if (global)
- break;
- }
- else if (cmp == 0
- && (*is_name_suffix) (SYMBOL_LINKAGE_NAME (psym)
- + name_len + 5))
- return psym;
- }
- i += 1;
- }
- }
- return NULL;
+ return 0;
}
+/* Psymtab version of map_matching_symbols. See its definition in
+ the definition of quick_symbol_functions in symfile.h. */
+
static void
-map_ada_symtabs (struct objfile *objfile,
- int (*wild_match) (const char *, int, const char *),
- int (*is_name_suffix) (const char *),
- void (*callback) (struct objfile *, struct symtab *, void *),
- const char *name, int global, domain_enum namespace, int wild,
- void *data)
+map_matching_symbols_psymtab (const char *name, domain_enum namespace,
+ struct objfile *objfile, int global,
+ int (*callback) (struct block *,
+ struct symbol *, void *),
+ void *data,
+ symbol_compare_ftype *match,
+ symbol_compare_ftype *ordered_compare)
{
+ const int block_kind = global ? GLOBAL_BLOCK : STATIC_BLOCK;
struct partial_symtab *ps;
ALL_OBJFILE_PSYMTABS (objfile, ps)
{
QUIT;
if (ps->readin
- || ada_lookup_partial_symbol (ps, name, global, namespace, wild,
- wild_match, is_name_suffix))
+ || match_partial_symbol (ps, global, name, namespace, match,
+ ordered_compare))
{
struct symtab *s = PSYMTAB_TO_SYMTAB (ps);
+ struct block *block;
+
if (s == NULL || !s->primary)
continue;
- (*callback) (objfile, s, data);
+ block = BLOCKVECTOR_BLOCK (BLOCKVECTOR (s), block_kind);
+ if (map_block (name, namespace, objfile, block,
+ callback, data, match))
+ return;
+ if (callback (block, NULL, data))
+ return;
}
}
-}
+}
static void
expand_symtabs_matching_via_partial (struct objfile *objfile,
- int (*file_matcher) (const char *, void *),
- int (*name_matcher) (const char *, void *),
+ int (*file_matcher) (const char *,
+ void *),
+ int (*name_matcher) (const char *,
+ void *),
domain_enum kind,
void *data)
{
if (! (*file_matcher) (ps->filename, data))
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;
+ 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
forget_cached_source_info_partial,
lookup_symtab_via_partial_symtab,
lookup_symbol_aux_psymtabs,
+ pre_expand_symtabs_matching_psymtabs,
print_psymtab_stats_for_objfile,
dump_psymtabs_for_objfile,
relocate_psymtabs,
expand_partial_symbol_tables,
read_psymtabs_with_filename,
find_symbol_file_from_partial,
- map_ada_symtabs,
+ map_matching_symbols_psymtab,
expand_symtabs_matching_via_partial,
find_pc_sect_symtab_from_partial,
map_symbol_names_psymtab,
return (psymtab);
}
+/* Calculate a hash code for the given partial symbol. The hash is
+ calculated using the symbol's value, language, domain, class
+ and name. These are the values which are set by
+ add_psymbol_to_bcache. */
+
+static unsigned long
+psymbol_hash (const void *addr, int length)
+{
+ unsigned long h = 0;
+ struct partial_symbol *psymbol = (struct partial_symbol *) addr;
+ unsigned int lang = psymbol->ginfo.language;
+ unsigned int domain = PSYMBOL_DOMAIN (psymbol);
+ unsigned int class = PSYMBOL_CLASS (psymbol);
+
+ h = hash_continue (&psymbol->ginfo.value, sizeof (psymbol->ginfo.value), h);
+ h = hash_continue (&lang, sizeof (unsigned int), h);
+ h = hash_continue (&domain, sizeof (unsigned int), h);
+ h = hash_continue (&class, sizeof (unsigned int), h);
+ h = hash_continue (psymbol->ginfo.name, strlen (psymbol->ginfo.name), h);
+
+ return h;
+}
+
+/* Returns true if the symbol at addr1 equals the symbol at addr2.
+ For the comparison this function uses a symbols value,
+ language, domain, class and name. */
+
+static int
+psymbol_compare (const void *addr1, const void *addr2, int length)
+{
+ struct partial_symbol *sym1 = (struct partial_symbol *) addr1;
+ struct partial_symbol *sym2 = (struct partial_symbol *) addr2;
+
+ return (memcmp (&sym1->ginfo.value, &sym1->ginfo.value,
+ sizeof (sym1->ginfo.value)) == 0
+ && sym1->ginfo.language == sym2->ginfo.language
+ && PSYMBOL_DOMAIN (sym1) == PSYMBOL_DOMAIN (sym2)
+ && PSYMBOL_CLASS (sym1) == PSYMBOL_CLASS (sym2)
+ && sym1->ginfo.name == sym2->ginfo.name);
+}
+
+/* Initialize a partial symbol bcache. */
+
+struct psymbol_bcache *
+psymbol_bcache_init (void)
+{
+ struct psymbol_bcache *bcache = XCALLOC (1, struct psymbol_bcache);
+ bcache->bcache = bcache_xmalloc (psymbol_hash, psymbol_compare);
+ return bcache;
+}
+
+/* Free a partial symbol bcache. */
+void
+psymbol_bcache_free (struct psymbol_bcache *bcache)
+{
+ if (bcache == NULL)
+ return;
+
+ bcache_xfree (bcache->bcache);
+ xfree (bcache);
+}
+
+/* Return the internal bcache of the psymbol_bcache BCACHE*/
+
+struct bcache *
+psymbol_bcache_get_bcache (struct psymbol_bcache *bcache)
+{
+ return bcache->bcache;
+}
+
+/* Find a copy of the SYM in BCACHE. If BCACHE has never seen this
+ symbol before, add a copy to BCACHE. In either case, return a pointer
+ to BCACHE's copy of the symbol. If optional ADDED is not NULL, return
+ 1 in case of new entry or 0 if returning an old entry. */
+
+static const struct partial_symbol *
+psymbol_bcache_full (struct partial_symbol *sym,
+ struct psymbol_bcache *bcache,
+ int *added)
+{
+ return bcache_full (sym,
+ sizeof (struct partial_symbol),
+ bcache->bcache,
+ added);
+}
+
/* Helper function, initialises partial symbol structure and stashes
it into objfile's bcache. Note that our caching mechanism will
use all fields of struct partial_symbol to determine hash value of the
different domain (or address) is possible and correct. */
static const struct partial_symbol *
-add_psymbol_to_bcache (char *name, int namelength, int copy_name,
+add_psymbol_to_bcache (const char *name, int namelength, int copy_name,
domain_enum domain,
enum address_class class,
long val, /* Value as a long */
enum language language, struct objfile *objfile,
int *added)
{
- /* psymbol is static so that there will be no uninitialized gaps in the
- structure which might contain random data, causing cache misses in
- bcache. */
- static struct partial_symbol psymbol;
-
- /* However, we must ensure that the entire 'value' field has been
- zeroed before assigning to it, because an assignment may not
- write the entire field. */
+ 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));
+
/* 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_LANGUAGE (&psymbol) = language;
+ SYMBOL_OBJ_SECTION (&psymbol) = NULL;
+ SYMBOL_SET_LANGUAGE (&psymbol, language);
PSYMBOL_DOMAIN (&psymbol) = domain;
PSYMBOL_CLASS (&psymbol) = class;
SYMBOL_SET_NAMES (&psymbol, name, namelength, copy_name, objfile);
/* Stash the partial symbol away in the cache */
- return bcache_full (&psymbol, sizeof (struct partial_symbol),
- objfile->psymbol_cache, added);
+ return psymbol_bcache_full (&psymbol,
+ objfile->psymbol_cache,
+ added);
+}
+
+/* Increase the space allocated for LISTP, which is probably
+ global_psymbols or static_psymbols. This space will eventually
+ be freed in free_objfile(). */
+
+static void
+extend_psymbol_list (struct psymbol_allocation_list *listp,
+ struct objfile *objfile)
+{
+ int new_size;
+
+ if (listp->size == 0)
+ {
+ new_size = 255;
+ listp->list = (struct partial_symbol **)
+ xmalloc (new_size * sizeof (struct partial_symbol *));
+ }
+ else
+ {
+ new_size = listp->size * 2;
+ listp->list = (struct partial_symbol **)
+ xrealloc ((char *) listp->list,
+ new_size * sizeof (struct partial_symbol *));
+ }
+ /* Next assumes we only went one over. Should be good if
+ program works correctly */
+ listp->next = listp->list + listp->size;
+ listp->size = new_size;
}
/* Helper function, adds partial symbol to the given partial symbol
cache. */
const struct partial_symbol *
-add_psymbol_to_list (char *name, int namelength, int copy_name,
+add_psymbol_to_list (const char *name, int namelength, int copy_name,
domain_enum domain,
enum address_class class,
struct psymbol_allocation_list *list,
pst->objfile->free_psymtabs = pst;
}
-/* Increase the space allocated for LISTP, which is probably
- global_psymbols or static_psymbols. This space will eventually
- be freed in free_objfile(). */
-
-void
-extend_psymbol_list (struct psymbol_allocation_list *listp,
- struct objfile *objfile)
-{
- int new_size;
- if (listp->size == 0)
- {
- new_size = 255;
- listp->list = (struct partial_symbol **)
- xmalloc (new_size * sizeof (struct partial_symbol *));
- }
- else
- {
- new_size = listp->size * 2;
- listp->list = (struct partial_symbol **)
- xrealloc ((char *) listp->list,
- new_size * sizeof (struct partial_symbol *));
- }
- /* Next assumes we only went one over. Should be good if
- program works correctly */
- listp->next = listp->list + listp->size;
- listp->size = new_size;
-}
-
\f
void
if (args == NULL)
{
- error (_("print-psymbols takes an output file name and optional symbol file name"));
+ error (_("\
+print-psymbols takes an output file name and optional symbol file name"));
}
argv = gdb_buildargv (args);
cleanups = make_cleanup_freeargv (argv);
printf_filtered (" readin %s\n",
psymtab->readin ? "yes" : "no");
printf_filtered (" fullname %s\n",
- psymtab->fullname ? psymtab->fullname : "(null)");
+ psymtab->fullname
+ ? psymtab->fullname : "(null)");
printf_filtered (" text addresses ");
fputs_filtered (paddress (gdbarch, psymtab->textlow),
gdb_stdout);
ALL_PSYMTABS (objfile, ps)
{
struct gdbarch *gdbarch = get_objfile_arch (objfile);
+
s = PSYMTAB_TO_SYMTAB (ps);
if (s == NULL)
continue;
projects / deliverable / binutils-gdb.git / blobdiff