static int arc_mmap_unmap (void *header, size_t headersz, const char **errmsg);
static void ctf_arc_import_parent (const ctf_archive_t *arc, ctf_dict_t *fp);
-/* Flag to indicate "symbol not present" in
- ctf_archive_internal.ctfi_symdicts. Never initialized. */
+/* Flag to indicate "symbol not present" in ctf_archive_internal.ctfi_symdicts
+ and ctfi_symnamedicts. Never initialized. */
static ctf_dict_t enosym;
/* Write out a CTF archive to the start of the file referenced by the passed-in
}
else
ctf_dict_close (arc->ctfi_dict);
- free (arc->ctfi_syms);
free (arc->ctfi_symdicts);
+ free (arc->ctfi_symnamedicts);
ctf_dynhash_destroy (arc->ctfi_dicts);
if (arc->ctfi_free_symsect)
free ((void *) arc->ctfi_symsect.cts_data);
ctf_dict_close ((ctf_dict_t *) fp);
}
-/* Return the ctf_dict_t with the given name and cache it in the
- archive's ctfi_dicts. */
+/* Return the ctf_dict_t with the given name and cache it in the archive's
+ ctfi_dicts. If this is the first cached dict, designate it the
+ crossdict_cache. */
static ctf_dict_t *
ctf_dict_open_cached (ctf_archive_t *arc, const char *name, int *errp)
{
goto oom;
fp->ctf_refcnt++;
+ if (arc->ctfi_crossdict_cache == NULL)
+ arc->ctfi_crossdict_cache = fp;
+
return fp;
oom:
ctf_arc_flush_caches (ctf_archive_t *wrapper)
{
free (wrapper->ctfi_symdicts);
- free (wrapper->ctfi_syms);
+ free (wrapper->ctfi_symnamedicts);
ctf_dynhash_destroy (wrapper->ctfi_dicts);
wrapper->ctfi_symdicts = NULL;
- wrapper->ctfi_syms = NULL;
+ wrapper->ctfi_symnamedicts = NULL;
wrapper->ctfi_dicts = NULL;
+ wrapper->ctfi_crossdict_cache = NULL;
}
/* Return the ctf_dict_t at the given ctfa_ctfs-relative offset, or NULL if
return wrapper->ctfi_archive->ctfa_ndicts;
}
-/* Look up a symbol in an archive. Return the dict in the archive that the
- symbol is found in, and (optionally) the ctf_id_t of the symbol in that dict
- (so you don't have to look it up yourself). The dict and mapping are both
- cached, so repeated lookups are nearly free.
+/* Look up a symbol in an archive by name or index (if the name is set, a lookup
+ by name is done). Return the dict in the archive that the symbol is found
+ in, and (optionally) the ctf_id_t of the symbol in that dict (so you don't
+ have to look it up yourself). The dict is cached, so repeated lookups are
+ nearly free.
As usual, you should ctf_dict_close() the returned dict once you are done
with it.
Returns NULL on error, and an error in errp (if set). */
-ctf_dict_t *
-ctf_arc_lookup_symbol (ctf_archive_t *wrapper, unsigned long symidx,
- ctf_id_t *typep, int *errp)
+static ctf_dict_t *
+ctf_arc_lookup_sym_or_name (ctf_archive_t *wrapper, unsigned long symidx,
+ const char *symname, ctf_id_t *typep, int *errp)
{
ctf_dict_t *fp;
+ void *fpkey;
ctf_id_t type;
/* The usual non-archive-transparent-wrapper special case. */
if (!wrapper->ctfi_is_archive)
{
- if ((type = ctf_lookup_by_symbol (wrapper->ctfi_dict, symidx)) == CTF_ERR)
+ if (!symname)
{
- if (errp)
- *errp = ctf_errno (wrapper->ctfi_dict);
- return NULL;
+ if ((type = ctf_lookup_by_symbol (wrapper->ctfi_dict, symidx)) == CTF_ERR)
+ {
+ if (errp)
+ *errp = ctf_errno (wrapper->ctfi_dict);
+ return NULL;
+ }
+ }
+ else
+ {
+ if ((type = ctf_lookup_by_symbol_name (wrapper->ctfi_dict,
+ symname)) == CTF_ERR)
+ {
+ if (errp)
+ *errp = ctf_errno (wrapper->ctfi_dict);
+ return NULL;
+ }
}
if (typep)
*typep = type;
return NULL;
}
- /* Make enough space for all possible symbols, if not already done.
- We cache both the ctf_id_t and the originating dictionary of all symbols.
- The dict links are weak, to the dictionaries cached in ctfi_dicts: their
- refcnts are *not* bumped. */
+ /* Make enough space for all possible symbol indexes, if not already done. We
+ cache the originating dictionary of all symbols. The dict links are weak,
+ to the dictionaries cached in ctfi_dicts: their refcnts are *not* bumped.
+ We also cache similar mappings for symbol names: these are ordinary
+ dynhashes, with weak links to dicts. */
- if (!wrapper->ctfi_syms)
+ if (!wrapper->ctfi_symdicts)
{
- if ((wrapper->ctfi_syms = calloc (wrapper->ctfi_symsect.cts_size
- / wrapper->ctfi_symsect.cts_entsize,
- sizeof (ctf_id_t))) == NULL)
+ if ((wrapper->ctfi_symdicts = calloc (wrapper->ctfi_symsect.cts_size
+ / wrapper->ctfi_symsect.cts_entsize,
+ sizeof (ctf_dict_t *))) == NULL)
{
if (errp)
*errp = ENOMEM;
return NULL;
}
}
- if (!wrapper->ctfi_symdicts)
+ if (!wrapper->ctfi_symnamedicts)
{
- if ((wrapper->ctfi_symdicts = calloc (wrapper->ctfi_symsect.cts_size
- / wrapper->ctfi_symsect.cts_entsize,
- sizeof (ctf_dict_t *))) == NULL)
+ if ((wrapper->ctfi_symnamedicts = ctf_dynhash_create (ctf_hash_string,
+ ctf_hash_eq_string,
+ free, NULL)) == NULL)
{
if (errp)
*errp = ENOMEM;
}
}
- /* Perhaps it's cached. */
- if (wrapper->ctfi_symdicts[symidx] != NULL)
+ /* Perhaps the dict in which we found a previous lookup is cached. If it's
+ supposed to be cached but we don't find it, pretend it was always not
+ found: this should never happen, but shouldn't be allowed to cause trouble
+ if it does. */
+
+ if ((symname && ctf_dynhash_lookup_kv (wrapper->ctfi_symnamedicts,
+ symname, NULL, &fpkey))
+ || (!symname && wrapper->ctfi_symdicts[symidx] != NULL))
{
- if (wrapper->ctfi_symdicts[symidx] == &enosym)
+ if (symname)
+ fp = (ctf_dict_t *) fpkey;
+ else
+ fp = wrapper->ctfi_symdicts[symidx];
+
+ if (fp == &enosym)
+ goto no_sym;
+
+ if (symname)
{
- if (errp)
- *errp = ECTF_NOTYPEDAT;
- if (typep)
- *typep = CTF_ERR;
- return NULL;
+ if ((type = ctf_lookup_by_symbol_name (fp, symname)) == CTF_ERR)
+ goto cache_no_sym;
+ }
+ else
+ {
+ if ((type = ctf_lookup_by_symbol (fp, symidx)) == CTF_ERR)
+ goto cache_no_sym;
}
if (typep)
- *typep = wrapper->ctfi_syms[symidx];
- wrapper->ctfi_symdicts[symidx]->ctf_refcnt++;
- return wrapper->ctfi_symdicts[symidx];
+ *typep = type;
+ fp->ctf_refcnt++;
+ return fp;
}
/* Not cached: find it and cache it. We must track open errors ourselves even
while ((fp = ctf_archive_next (wrapper, &i, &name, 0, local_errp)) != NULL)
{
- if ((type = ctf_lookup_by_symbol (fp, symidx)) != CTF_ERR)
+ if (!symname)
{
- wrapper->ctfi_syms[symidx] = type;
- wrapper->ctfi_symdicts[symidx] = fp;
- ctf_next_destroy (i);
+ if ((type = ctf_lookup_by_symbol (fp, symidx)) != CTF_ERR)
+ wrapper->ctfi_symdicts[symidx] = fp;
+ }
+ else
+ {
+ if ((type = ctf_lookup_by_symbol_name (fp, symname)) != CTF_ERR)
+ {
+ char *tmp;
+ /* No error checking, as above. */
+ if ((tmp = strdup (symname)) != NULL)
+ ctf_dynhash_insert (wrapper->ctfi_symnamedicts, tmp, fp);
+ }
+ }
+ if (type != CTF_ERR)
+ {
if (typep)
*typep = type;
+ ctf_next_destroy (i);
return fp;
}
+ if (ctf_errno (fp) != ECTF_NOTYPEDAT)
+ {
+ if (errp)
+ *errp = ctf_errno (fp);
+ ctf_next_destroy (i);
+ return NULL; /* errno is set for us. */
+ }
ctf_dict_close (fp);
}
if (*local_errp != ECTF_NEXT_END)
ctf_next_destroy (i);
return NULL;
}
+
/* Don't leak end-of-iteration to the caller. */
*local_errp = 0;
- wrapper->ctfi_symdicts[symidx] = &enosym;
+ cache_no_sym:
+ if (!symname)
+ wrapper->ctfi_symdicts[symidx] = &enosym;
+ else
+ {
+ char *tmp;
+
+ /* No error checking: if caching fails, there is only a slight performance
+ impact. */
+ if ((tmp = strdup (symname)) != NULL)
+ if (ctf_dynhash_insert (wrapper->ctfi_symnamedicts, tmp, &enosym) < 0)
+ free (tmp);
+ }
+ no_sym:
if (errp)
*errp = ECTF_NOTYPEDAT;
if (typep)
return NULL;
}
+/* The public API for looking up a symbol by index. */
+ctf_dict_t *
+ctf_arc_lookup_symbol (ctf_archive_t *wrapper, unsigned long symidx,
+ ctf_id_t *typep, int *errp)
+{
+ return ctf_arc_lookup_sym_or_name (wrapper, symidx, NULL, typep, errp);
+}
+
+/* The public API for looking up a symbol by name. */
+
+ctf_dict_t *
+ctf_arc_lookup_symbol_name (ctf_archive_t *wrapper, const char *symname,
+ ctf_id_t *typep, int *errp)
+{
+ return ctf_arc_lookup_sym_or_name (wrapper, 0, symname, typep, errp);
+}
+
/* Raw iteration over all CTF files in an archive. We pass the raw data for all
CTF files in turn to the specified callback function. */
static int
projects / thirdparty / binutils-gdb.git / blobdiff