/* Symbol table lookup for the GNU debugger, GDB.
- Copyright (C) 1986-2015 Free Software Foundation, Inc.
+ Copyright (C) 1986-2017 Free Software Foundation, Inc.
This file is part of GDB.
#include "p-lang.h"
#include "addrmap.h"
#include "cli/cli-utils.h"
-
+#include "fnmatch.h"
#include "hashtab.h"
#include "gdb_obstack.h"
static int find_line_common (struct linetable *, int, int *, int);
-static struct symbol *lookup_symbol_aux (const char *name,
- const struct block *block,
- const domain_enum domain,
- enum language language,
- struct field_of_this_result *);
+static struct block_symbol
+ lookup_symbol_aux (const char *name,
+ const struct block *block,
+ const domain_enum domain,
+ enum language language,
+ struct field_of_this_result *);
static
-struct symbol *lookup_local_symbol (const char *name,
- const struct block *block,
- const domain_enum domain,
- enum language language);
+struct block_symbol lookup_local_symbol (const char *name,
+ const struct block *block,
+ const domain_enum domain,
+ enum language language);
-static struct symbol *
+static struct block_symbol
lookup_symbol_in_objfile (struct objfile *objfile, int block_index,
const char *name, const domain_enum domain);
+/* See symtab.h. */
+const struct block_symbol null_block_symbol = { NULL, NULL };
+
extern initialize_file_ftype _initialize_symtab;
/* Program space key for finding name and language of "main". */
/* symbol_cache_lookup returns this if a previous lookup failed to find the
symbol in any objfile. */
-#define SYMBOL_LOOKUP_FAILED ((struct symbol *) 1)
+#define SYMBOL_LOOKUP_FAILED \
+ ((struct block_symbol) {(struct symbol *) 1, NULL})
+#define SYMBOL_LOOKUP_FAILED_P(SIB) (SIB.symbol == (struct symbol *) 1)
/* Recording lookups that don't find the symbol is just as important, if not
more so, than recording found symbols. */
union
{
- struct symbol *found;
+ struct block_symbol found;
struct
{
char *name;
return multiple_symbols_mode;
}
-/* 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;
-
/* Return the name of a domain_enum. */
const char *
&& STRIP_DRIVE_SPEC (filename) == &filename[len - search_len]));
}
+/* Same as compare_filenames_for_search, but for glob-style patterns.
+ Heads up on the order of the arguments. They match the order of
+ compare_filenames_for_search, but it's the opposite of the order of
+ arguments to gdb_filename_fnmatch. */
+
+int
+compare_glob_filenames_for_search (const char *filename,
+ const char *search_name)
+{
+ /* We rely on the property of glob-style patterns with FNM_FILE_NAME that
+ all /s have to be explicitly specified. */
+ int file_path_elements = count_path_elements (filename);
+ int search_path_elements = count_path_elements (search_name);
+
+ if (search_path_elements > file_path_elements)
+ return 0;
+
+ if (IS_ABSOLUTE_PATH (search_name))
+ {
+ return (search_path_elements == file_path_elements
+ && gdb_filename_fnmatch (search_name, filename,
+ FNM_FILE_NAME | FNM_NOESCAPE) == 0);
+ }
+
+ {
+ const char *file_to_compare
+ = strip_leading_path_elements (filename,
+ file_path_elements - search_path_elements);
+
+ return gdb_filename_fnmatch (search_name, file_to_compare,
+ FNM_FILE_NAME | FNM_NOESCAPE) == 0;
+ }
+}
+
/* Check for a symtab of a specific name by searching some symtabs.
This is a helper function for callbacks of iterate_over_symtabs.
If NAME is not absolute, then REAL_PATH is NULL
If NAME is absolute, then REAL_PATH is the gdb_realpath form of NAME.
- The return value, NAME, REAL_PATH, CALLBACK, and DATA
- are identical to the `map_symtabs_matching_filename' method of
- quick_symbol_functions.
+ The return value, NAME, REAL_PATH and CALLBACK are identical to the
+ `map_symtabs_matching_filename' method of quick_symbol_functions.
FIRST and AFTER_LAST indicate the range of compunit symtabs to search.
Each symtab within the specified compunit symtab is also searched.
AFTER_LAST is one past the last compunit symtab to search; NULL means to
search until the end of the list. */
-int
+bool
iterate_over_some_symtabs (const char *name,
const char *real_path,
- int (*callback) (struct symtab *symtab,
- void *data),
- void *data,
struct compunit_symtab *first,
- struct compunit_symtab *after_last)
+ struct compunit_symtab *after_last,
+ gdb::function_view<bool (symtab *)> callback)
{
struct compunit_symtab *cust;
struct symtab *s;
{
if (compare_filenames_for_search (s->filename, name))
{
- if (callback (s, data))
- return 1;
+ if (callback (s))
+ return true;
continue;
}
if (compare_filenames_for_search (symtab_to_fullname (s), name))
{
- if (callback (s, data))
- return 1;
+ if (callback (s))
+ return true;
continue;
}
gdb_assert (IS_ABSOLUTE_PATH (name));
if (FILENAME_CMP (real_path, fullname) == 0)
{
- if (callback (s, data))
- return 1;
+ if (callback (s))
+ return true;
continue;
}
}
}
}
- return 0;
+ return false;
}
/* 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.
- Calls CALLBACK with each symtab that is found and with the supplied
- DATA. If CALLBACK returns true, the search stops. */
+ Calls CALLBACK with each symtab that is found. If CALLBACK returns
+ true, the search stops. */
void
iterate_over_symtabs (const char *name,
- int (*callback) (struct symtab *symtab,
- void *data),
- void *data)
+ gdb::function_view<bool (symtab *)> callback)
{
struct objfile *objfile;
- char *real_path = NULL;
- struct cleanup *cleanups = make_cleanup (null_cleanup, NULL);
+ gdb::unique_xmalloc_ptr<char> real_path;
/* Here we are interested in canonicalizing an absolute path, not
absolutizing a relative path. */
if (IS_ABSOLUTE_PATH (name))
{
- real_path = gdb_realpath (name);
- make_cleanup (xfree, real_path);
- gdb_assert (IS_ABSOLUTE_PATH (real_path));
+ real_path.reset (gdb_realpath (name));
+ gdb_assert (IS_ABSOLUTE_PATH (real_path.get ()));
}
ALL_OBJFILES (objfile)
- {
- if (iterate_over_some_symtabs (name, real_path, callback, data,
- objfile->compunit_symtabs, NULL))
- {
- do_cleanups (cleanups);
+ {
+ if (iterate_over_some_symtabs (name, real_path.get (),
+ objfile->compunit_symtabs, NULL,
+ callback))
return;
- }
- }
+ }
/* Same search rules as above apply here, but now we look thru the
psymtabs. */
ALL_OBJFILES (objfile)
- {
- if (objfile->sf
- && objfile->sf->qf->map_symtabs_matching_filename (objfile,
- name,
- real_path,
- callback,
- data))
- {
- do_cleanups (cleanups);
+ {
+ if (objfile->sf
+ && objfile->sf->qf->map_symtabs_matching_filename (objfile,
+ name,
+ real_path.get (),
+ callback))
return;
- }
- }
-
- do_cleanups (cleanups);
-}
-
-/* The callback function used by lookup_symtab. */
-
-static int
-lookup_symtab_callback (struct symtab *symtab, void *data)
-{
- struct symtab **result_ptr = data;
-
- *result_ptr = symtab;
- return 1;
+ }
}
/* A wrapper for iterate_over_symtabs that returns the first matching
{
struct symtab *result = NULL;
- iterate_over_symtabs (name, lookup_symtab_callback, &result);
+ iterate_over_symtabs (name, [&] (symtab *symtab)
+ {
+ result = symtab;
+ return true;
+ });
+
return result;
}
int is_constructor;
int is_destructor = is_destructor_name (physname);
/* Need a new type prefix. */
- char *const_prefix = method->is_const ? "C" : "";
- char *volatile_prefix = method->is_volatile ? "V" : "";
+ const char *const_prefix = method->is_const ? "C" : "";
+ const char *volatile_prefix = method->is_volatile ? "V" : "";
char buf[20];
int len = (newname == NULL ? 0 : strlen (newname));
else
{
gsymbol->ada_mangled = 1;
- gsymbol->language_specific.mangled_lang.demangled_name = name;
+ gsymbol->language_specific.demangled_name = name;
}
}
else
- gsymbol->language_specific.mangled_lang.demangled_name = name;
+ gsymbol->language_specific.demangled_name = name;
}
/* Return the demangled name of GSYMBOL. */
/* Fall through. */
}
- return gsymbol->language_specific.mangled_lang.demangled_name;
+ return gsymbol->language_specific.demangled_name;
}
\f
if (gsymbol->language == language_cplus
|| gsymbol->language == language_d
|| gsymbol->language == language_go
- || gsymbol->language == language_java
|| gsymbol->language == language_objc
|| gsymbol->language == language_fortran)
{
static hashval_t
hash_demangled_name_entry (const void *data)
{
- const struct demangled_name_entry *e = data;
+ const struct demangled_name_entry *e
+ = (const struct demangled_name_entry *) data;
return htab_hash_string (e->mangled);
}
static int
eq_demangled_name_entry (const void *a, const void *b)
{
- const struct demangled_name_entry *da = a;
- const struct demangled_name_entry *db = b;
+ const struct demangled_name_entry *da
+ = (const struct demangled_name_entry *) a;
+ const struct demangled_name_entry *db
+ = (const struct demangled_name_entry *) b;
return strcmp (da->mangled, db->mangled) == 0;
}
const char *mangled)
{
char *demangled = NULL;
+ int i;
+ int recognized;
if (gsymbol->language == language_unknown)
gsymbol->language = language_auto;
- if (gsymbol->language == language_objc
- || gsymbol->language == language_auto)
+ if (gsymbol->language != language_auto)
{
- demangled =
- objc_demangle (mangled, 0);
- if (demangled != NULL)
- {
- gsymbol->language = language_objc;
- return demangled;
- }
- }
- if (gsymbol->language == language_cplus
- || gsymbol->language == language_auto)
- {
- demangled =
- gdb_demangle (mangled, DMGL_PARAMS | DMGL_ANSI);
- if (demangled != NULL)
- {
- gsymbol->language = language_cplus;
- return demangled;
- }
- }
- if (gsymbol->language == language_java)
- {
- demangled =
- gdb_demangle (mangled,
- DMGL_PARAMS | DMGL_ANSI | DMGL_JAVA);
- if (demangled != NULL)
- {
- gsymbol->language = language_java;
- return demangled;
- }
- }
- if (gsymbol->language == language_d
- || gsymbol->language == language_auto)
- {
- demangled = d_demangle(mangled, 0);
- if (demangled != NULL)
- {
- gsymbol->language = language_d;
- return demangled;
- }
+ const struct language_defn *lang = language_def (gsymbol->language);
+
+ language_sniff_from_mangled_name (lang, mangled, &demangled);
+ return demangled;
}
- /* FIXME(dje): Continually adding languages here is clumsy.
- Better to just call la_demangle if !auto, and if auto then call
- a utility routine that tries successive languages in turn and reports
- which one it finds. I realize the la_demangle options may be different
- for different languages but there's already a FIXME for that. */
- if (gsymbol->language == language_go
- || gsymbol->language == language_auto)
+
+ for (i = language_unknown; i < nr_languages; ++i)
{
- demangled = go_demangle (mangled, 0);
- if (demangled != NULL)
+ enum language l = (enum language) i;
+ const struct language_defn *lang = language_def (l);
+
+ if (language_sniff_from_mangled_name (lang, mangled, &demangled))
{
- gsymbol->language = language_go;
+ gsymbol->language = l;
return demangled;
}
}
- /* We could support `gsymbol->language == language_fortran' here to provide
- module namespaces also for inferiors with only minimal symbol table (ELF
- symbols). Just the mangling standard is not standardized across compilers
- and there is no DW_AT_producer available for inferiors with only the ELF
- symbols to check the mangling kind. */
-
- /* Check for Ada symbols last. See comment below explaining why. */
-
- if (gsymbol->language == language_auto)
- {
- const char *demangled = ada_decode (mangled);
-
- if (demangled != mangled && demangled != NULL && demangled[0] != '<')
- {
- /* Set the gsymbol language to Ada, but still return NULL.
- Two reasons for that:
-
- 1. For Ada, we prefer computing the symbol's decoded name
- on the fly rather than pre-compute it, in order to save
- memory (Ada projects are typically very large).
-
- 2. There are some areas in the definition of the GNAT
- encoding where, with a bit of bad luck, we might be able
- to decode a non-Ada symbol, generating an incorrect
- demangled name (Eg: names ending with "TB" for instance
- are identified as task bodies and so stripped from
- the decoded name returned).
-
- Returning NULL, here, helps us get a little bit of
- the best of both worlds. Because we're last, we should
- not affect any of the other languages that were able to
- demangle the symbol before us; we get to correctly tag
- Ada symbols as such; and even if we incorrectly tagged
- a non-Ada symbol, which should be rare, any routing
- through the Ada language should be transparent (Ada
- tries to behave much like C/C++ with non-Ada symbols). */
- gsymbol->language = language_ada;
- return NULL;
- }
- }
-
return NULL;
}
comes from the per-BFD storage_obstack. LINKAGE_NAME is copied,
so the pointer can be discarded after calling this function. */
-/* We have to be careful when dealing with Java names: when we run
- into a Java minimal symbol, we don't know it's a Java symbol, so it
- gets demangled as a C++ name. This is unfortunate, but there's not
- much we can do about it: but when demangling partial symbols and
- regular symbols, we'd better not reuse the wrong demangled name.
- (See PR gdb/1039.) We solve this by putting a distinctive prefix
- on Java names when storing them in the hash table. */
-
-/* FIXME: carlton/2003-03-13: This is an unfortunate situation. I
- don't mind the Java prefix so much: different languages have
- different demangling requirements, so it's only natural that we
- need to keep language data around in our demangling cache. But
- it's not good that the minimal symbol has the wrong demangled name.
- Unfortunately, I can't think of any easy solution to that
- problem. */
-
-#define JAVA_PREFIX "##JAVA$$"
-#define JAVA_PREFIX_LEN 8
-
void
symbol_set_names (struct general_symbol_info *gsymbol,
const char *linkage_name, int len, int copy_name,
struct demangled_name_entry **slot;
/* A 0-terminated copy of the linkage name. */
const char *linkage_name_copy;
- /* A copy of the linkage name that might have a special Java prefix
- added to it, for use when looking names up in the hash table. */
- const char *lookup_name;
- /* The length of lookup_name. */
- int lookup_len;
struct demangled_name_entry entry;
struct objfile_per_bfd_storage *per_bfd = objfile->per_bfd;
if (gsymbol->language == language_ada)
{
/* In Ada, we do the symbol lookups using the mangled name, so
- we can save some space by not storing the demangled name.
-
- As a side note, we have also observed some overlap between
- the C++ mangling and Ada mangling, similarly to what has
- been observed with Java. Because we don't store the demangled
- name with the symbol, we don't need to use the same trick
- as Java. */
+ we can save some space by not storing the demangled name. */
if (!copy_name)
gsymbol->name = linkage_name;
else
{
- char *name = obstack_alloc (&per_bfd->storage_obstack, len + 1);
+ char *name = (char *) obstack_alloc (&per_bfd->storage_obstack,
+ len + 1);
memcpy (name, linkage_name, len);
name[len] = '\0';
if (per_bfd->demangled_names_hash == NULL)
create_demangled_names_hash (objfile);
- /* The stabs reader generally provides names that are not
- NUL-terminated; most of the other readers don't do this, so we
- can just use the given copy, unless we're in the Java case. */
- if (gsymbol->language == language_java)
- {
- char *alloc_name;
-
- lookup_len = len + JAVA_PREFIX_LEN;
- alloc_name = alloca (lookup_len + 1);
- memcpy (alloc_name, JAVA_PREFIX, JAVA_PREFIX_LEN);
- memcpy (alloc_name + JAVA_PREFIX_LEN, linkage_name, len);
- alloc_name[lookup_len] = '\0';
-
- lookup_name = alloc_name;
- linkage_name_copy = alloc_name + JAVA_PREFIX_LEN;
- }
- else if (linkage_name[len] != '\0')
+ if (linkage_name[len] != '\0')
{
char *alloc_name;
- lookup_len = len;
- alloc_name = alloca (lookup_len + 1);
+ alloc_name = (char *) alloca (len + 1);
memcpy (alloc_name, linkage_name, len);
- alloc_name[lookup_len] = '\0';
+ alloc_name[len] = '\0';
- lookup_name = alloc_name;
linkage_name_copy = alloc_name;
}
else
- {
- lookup_len = len;
- lookup_name = linkage_name;
- linkage_name_copy = linkage_name;
- }
+ linkage_name_copy = linkage_name;
- entry.mangled = lookup_name;
+ entry.mangled = linkage_name_copy;
slot = ((struct demangled_name_entry **)
htab_find_slot (per_bfd->demangled_names_hash,
&entry, INSERT));
int demangled_len = demangled_name ? strlen (demangled_name) : 0;
/* Suppose we have demangled_name==NULL, copy_name==0, and
- lookup_name==linkage_name. In this case, we already have the
+ linkage_name_copy==linkage_name. In this case, we already have the
mangled name saved, and we don't have a demangled name. So,
you might think we could save a little space by not recording
this in the hash table at all.
It turns out that it is actually important to still save such
an entry in the hash table, because storing this name gives
us better bcache hit rates for partial symbols. */
- if (!copy_name && lookup_name == linkage_name)
+ if (!copy_name && linkage_name_copy == linkage_name)
{
- *slot = obstack_alloc (&per_bfd->storage_obstack,
- offsetof (struct demangled_name_entry,
- demangled)
- + demangled_len + 1);
- (*slot)->mangled = lookup_name;
+ *slot
+ = ((struct demangled_name_entry *)
+ obstack_alloc (&per_bfd->storage_obstack,
+ offsetof (struct demangled_name_entry, demangled)
+ + demangled_len + 1));
+ (*slot)->mangled = linkage_name;
}
else
{
/* If we must copy the mangled name, put it directly after
the demangled name so we can have a single
allocation. */
- *slot = obstack_alloc (&per_bfd->storage_obstack,
- offsetof (struct demangled_name_entry,
- demangled)
- + lookup_len + demangled_len + 2);
+ *slot
+ = ((struct demangled_name_entry *)
+ obstack_alloc (&per_bfd->storage_obstack,
+ offsetof (struct demangled_name_entry, demangled)
+ + len + demangled_len + 2));
mangled_ptr = &((*slot)->demangled[demangled_len + 1]);
- strcpy (mangled_ptr, lookup_name);
+ strcpy (mangled_ptr, linkage_name_copy);
(*slot)->mangled = mangled_ptr;
}
(*slot)->demangled[0] = '\0';
}
- gsymbol->name = (*slot)->mangled + lookup_len - len;
+ gsymbol->name = (*slot)->mangled;
if ((*slot)->demangled[0] != '\0')
symbol_set_demangled_name (gsymbol, (*slot)->demangled,
&per_bfd->storage_obstack);
case language_cplus:
case language_d:
case language_go:
- case language_java:
case language_objc:
case language_fortran:
if (symbol_get_demangled_name (gsymbol) != NULL)
case language_cplus:
case language_d:
case language_go:
- case language_java:
case language_objc:
case language_fortran:
dem_name = symbol_get_demangled_name (gsymbol);
if (name != NULL)
hash += htab_hash_string (name);
- hash += domain;
+ /* Because of symbol_matches_domain we need VAR_DOMAIN and STRUCT_DOMAIN
+ to map to the same slot. */
+ if (domain == STRUCT_DOMAIN)
+ hash += VAR_DOMAIN * 7;
+ else
+ hash += domain * 7;
return hash;
}
}
else
{
- slot_name = SYMBOL_SEARCH_NAME (slot->value.found);
- slot_domain = SYMBOL_DOMAIN (slot->value.found);
+ slot_name = SYMBOL_SEARCH_NAME (slot->value.found.symbol);
+ slot_domain = SYMBOL_DOMAIN (slot->value.found.symbol);
}
/* NULL names match. */
}
else
{
- struct symbol *sym = slot->value.found;
+ struct symbol *sym = slot->value.found.symbol;
if (strcmp_iw (slot_name, name) != 0)
return 0;
{
size_t total_size = symbol_cache_byte_size (new_size);
- cache->global_symbols = xcalloc (1, total_size);
- cache->static_symbols = xcalloc (1, total_size);
+ cache->global_symbols
+ = (struct block_symbol_cache *) xcalloc (1, total_size);
+ cache->static_symbols
+ = (struct block_symbol_cache *) xcalloc (1, total_size);
cache->global_symbols->size = new_size;
cache->static_symbols->size = new_size;
}
static struct symbol_cache *
get_symbol_cache (struct program_space *pspace)
{
- struct symbol_cache *cache = program_space_data (pspace, symbol_cache_key);
+ struct symbol_cache *cache
+ = (struct symbol_cache *) program_space_data (pspace, symbol_cache_key);
if (cache == NULL)
{
static void
symbol_cache_cleanup (struct program_space *pspace, void *data)
{
- struct symbol_cache *cache = data;
+ struct symbol_cache *cache = (struct symbol_cache *) data;
free_symbol_cache (cache);
}
ALL_PSPACES (pspace)
{
struct symbol_cache *cache
- = program_space_data (pspace, symbol_cache_key);
+ = (struct symbol_cache *) program_space_data (pspace, symbol_cache_key);
/* The pspace could have been created but not have a cache yet. */
if (cache != NULL)
The result is the symbol if found, SYMBOL_LOOKUP_FAILED if a previous lookup
failed (and thus this one will too), or NULL if the symbol is not present
in the cache.
- *BSC_PTR, *SLOT_PTR are set to the cache and slot of the symbol, whether
- found or not found. */
+ If the symbol is not present in the cache, then *BSC_PTR and *SLOT_PTR are
+ set to the cache and slot of the symbol to save the result of a full lookup
+ attempt. */
-static struct symbol *
+static struct block_symbol
symbol_cache_lookup (struct symbol_cache *cache,
struct objfile *objfile_context, int block,
const char *name, domain_enum domain,
{
*bsc_ptr = NULL;
*slot_ptr = NULL;
- return NULL;
+ return (struct block_symbol) {NULL, NULL};
}
hash = hash_symbol_entry (objfile_context, name, domain);
slot = bsc->symbols + hash % bsc->size;
- *bsc_ptr = bsc;
- *slot_ptr = slot;
if (eq_symbol_entry (slot, objfile_context, name, domain))
{
return slot->value.found;
}
+ /* Symbol is not present in the cache. */
+
+ *bsc_ptr = bsc;
+ *slot_ptr = slot;
+
if (symbol_lookup_debug)
{
fprintf_unfiltered (gdb_stdlog,
name, domain_name (domain));
}
++bsc->misses;
- return NULL;
+ return (struct block_symbol) {NULL, NULL};
}
/* Clear out SLOT. */
symbol_cache_mark_found (struct block_symbol_cache *bsc,
struct symbol_cache_slot *slot,
struct objfile *objfile_context,
- struct symbol *symbol)
+ struct symbol *symbol,
+ const struct block *block)
{
if (bsc == NULL)
return;
}
slot->state = SYMBOL_SLOT_FOUND;
slot->objfile_context = objfile_context;
- slot->value.found = symbol;
+ slot->value.found.symbol = symbol;
+ slot->value.found.block = block;
}
/* Mark symbol NAME, DOMAIN as not found in SLOT.
static void
symbol_cache_flush (struct program_space *pspace)
{
- struct symbol_cache *cache = program_space_data (pspace, symbol_cache_key);
+ struct symbol_cache *cache
+ = (struct symbol_cache *) program_space_data (pspace, symbol_cache_key);
int pass;
- size_t total_size;
if (cache == NULL)
return;
case SYMBOL_SLOT_UNUSED:
break;
case SYMBOL_SLOT_NOT_FOUND:
- printf_filtered (" [%-4u] = %s, %s (not found)\n", i,
+ printf_filtered (" [%4u] = %s, %s %s (not found)\n", i,
host_address_to_string (slot->objfile_context),
- slot->value.not_found.name);
+ slot->value.not_found.name,
+ domain_name (slot->value.not_found.domain));
break;
case SYMBOL_SLOT_FOUND:
- printf_filtered (" [%-4u] = %s, %s\n", i,
- host_address_to_string (slot->objfile_context),
- SYMBOL_PRINT_NAME (slot->value.found));
- break;
+ {
+ struct symbol *found = slot->value.found.symbol;
+ const struct objfile *context = slot->objfile_context;
+
+ printf_filtered (" [%4u] = %s, %s %s\n", i,
+ host_address_to_string (context),
+ SYMBOL_PRINT_NAME (found),
+ domain_name (SYMBOL_DOMAIN (found)));
+ break;
+ }
}
}
}
: "(no object file)");
/* If the cache hasn't been created yet, avoid creating one. */
- cache = program_space_data (pspace, symbol_cache_key);
+ cache
+ = (struct symbol_cache *) program_space_data (pspace, symbol_cache_key);
if (cache == NULL)
printf_filtered (" <empty>\n");
else
: "(no object file)");
/* If the cache hasn't been created yet, avoid creating one. */
- cache = program_space_data (pspace, symbol_cache_key);
+ cache
+ = (struct symbol_cache *) program_space_data (pspace, symbol_cache_key);
if (cache == NULL)
printf_filtered (" empty, no stats available\n");
else
}
/* Compute the demangled form of NAME as used by the various symbol
- lookup functions. The result is stored in *RESULT_NAME. Returns a
- cleanup which can be used to clean up the result.
+ lookup functions. The result can either be the input NAME
+ directly, or a pointer to a buffer owned by the STORAGE object.
- For Ada, this function just sets *RESULT_NAME to NAME, unmodified.
+ For Ada, this function just returns NAME, unmodified.
Normally, Ada symbol lookups are performed using the encoded name
rather than the demangled name, and so it might seem to make sense
for this function to return an encoded version of NAME.
characters to become lowercase, and thus cause the symbol lookup
to fail. */
-struct cleanup *
+const char *
demangle_for_lookup (const char *name, enum language lang,
- const char **result_name)
+ demangle_result_storage &storage)
{
- char *demangled_name = NULL;
- const char *modified_name = NULL;
- struct cleanup *cleanup = make_cleanup (null_cleanup, 0);
-
- modified_name = name;
-
- /* If we are using C++, D, Go, or Java, demangle the name before doing a
+ /* If we are using C++, D, or Go, demangle the name before doing a
lookup, so we can always binary search. */
if (lang == language_cplus)
{
- demangled_name = gdb_demangle (name, DMGL_ANSI | DMGL_PARAMS);
- if (demangled_name)
- {
- modified_name = demangled_name;
- make_cleanup (xfree, demangled_name);
- }
- else
- {
- /* If we were given a non-mangled name, canonicalize it
- according to the language (so far only for C++). */
- demangled_name = cp_canonicalize_string (name);
- if (demangled_name)
- {
- modified_name = demangled_name;
- make_cleanup (xfree, demangled_name);
- }
- }
- }
- else if (lang == language_java)
- {
- demangled_name = gdb_demangle (name,
- DMGL_ANSI | DMGL_PARAMS | DMGL_JAVA);
- if (demangled_name)
- {
- modified_name = demangled_name;
- make_cleanup (xfree, demangled_name);
- }
+ char *demangled_name = gdb_demangle (name, DMGL_ANSI | DMGL_PARAMS);
+ if (demangled_name != NULL)
+ return storage.set_malloc_ptr (demangled_name);
+
+ /* If we were given a non-mangled name, canonicalize it
+ according to the language (so far only for C++). */
+ std::string canon = cp_canonicalize_string (name);
+ if (!canon.empty ())
+ return storage.swap_string (canon);
}
else if (lang == language_d)
{
- demangled_name = d_demangle (name, 0);
- if (demangled_name)
- {
- modified_name = demangled_name;
- make_cleanup (xfree, demangled_name);
- }
+ char *demangled_name = d_demangle (name, 0);
+ if (demangled_name != NULL)
+ return storage.set_malloc_ptr (demangled_name);
}
else if (lang == language_go)
{
- demangled_name = go_demangle (name, 0);
- if (demangled_name)
- {
- modified_name = demangled_name;
- make_cleanup (xfree, demangled_name);
- }
+ char *demangled_name = go_demangle (name, 0);
+ if (demangled_name != NULL)
+ return storage.set_malloc_ptr (demangled_name);
}
- *result_name = modified_name;
- return cleanup;
+ return name;
}
/* See symtab.h.
variable and thus can probably assume it will never hit the C++
code). */
-struct symbol *
+struct block_symbol
lookup_symbol_in_language (const char *name, const struct block *block,
const domain_enum domain, enum language lang,
struct field_of_this_result *is_a_field_of_this)
{
- const char *modified_name;
- struct symbol *returnval;
- struct cleanup *cleanup = demangle_for_lookup (name, lang, &modified_name);
-
- returnval = lookup_symbol_aux (modified_name, block, domain, lang,
- is_a_field_of_this);
- do_cleanups (cleanup);
+ demangle_result_storage storage;
+ const char *modified_name = demangle_for_lookup (name, lang, storage);
- return returnval;
+ return lookup_symbol_aux (modified_name, block, domain, lang,
+ is_a_field_of_this);
}
/* See symtab.h. */
-struct symbol *
+struct block_symbol
lookup_symbol (const char *name, const struct block *block,
domain_enum domain,
struct field_of_this_result *is_a_field_of_this)
/* See symtab.h. */
-struct symbol *
+struct block_symbol
lookup_language_this (const struct language_defn *lang,
const struct block *block)
{
if (lang->la_name_of_this == NULL || block == NULL)
- return NULL;
+ return (struct block_symbol) {NULL, NULL};
if (symbol_lookup_debug > 1)
{
host_address_to_string (sym),
host_address_to_string (block));
}
- block_found = block;
- return sym;
+ return (struct block_symbol) {sym, block};
}
if (BLOCK_FUNCTION (block))
break;
if (symbol_lookup_debug > 1)
fprintf_unfiltered (gdb_stdlog, " = NULL\n");
- return NULL;
+ return (struct block_symbol) {NULL, NULL};
}
/* Given TYPE, a structure/union,
int i;
/* The type may be a stub. */
- CHECK_TYPEDEF (type);
+ type = check_typedef (type);
for (i = TYPE_NFIELDS (type) - 1; i >= TYPE_N_BASECLASSES (type); i--)
{
/* Behave like lookup_symbol except that NAME is the natural name
(e.g., demangled name) of the symbol that we're looking for. */
-static struct symbol *
+static struct block_symbol
lookup_symbol_aux (const char *name, const struct block *block,
const domain_enum domain, enum language language,
struct field_of_this_result *is_a_field_of_this)
{
- struct symbol *sym;
+ struct block_symbol result;
const struct language_defn *langdef;
if (symbol_lookup_debug)
domain_name (domain), language_str (language));
}
- /* Initialize block_found so that the language la_lookup_symbol_nonlocal
- routines don't have to set it (to NULL) if a primitive type is found.
- We do this early so that block_found is also NULL if no symbol is
- found (though this is not part of the API, and callers cannot assume
- this). */
- block_found = NULL;
-
/* Make sure we do something sensible with is_a_field_of_this, since
the callers that set this parameter to some non-null value will
certainly use it later. If we don't set it, the contents of
/* Search specified block and its superiors. Don't search
STATIC_BLOCK or GLOBAL_BLOCK. */
- sym = lookup_local_symbol (name, block, domain, language);
- if (sym != NULL)
+ result = lookup_local_symbol (name, block, domain, language);
+ if (result.symbol != NULL)
{
if (symbol_lookup_debug)
{
fprintf_unfiltered (gdb_stdlog, "lookup_symbol_aux (...) = %s\n",
- host_address_to_string (sym));
+ host_address_to_string (result.symbol));
}
- return sym;
+ return result;
}
/* If requested to do so by the caller and if appropriate for LANGUAGE,
means. */
if (is_a_field_of_this != NULL && domain != STRUCT_DOMAIN)
{
- struct symbol *sym = lookup_language_this (langdef, block);
+ result = lookup_language_this (langdef, block);
- if (sym)
+ if (result.symbol)
{
- struct type *t = sym->type;
+ struct type *t = result.symbol->type;
/* I'm not really sure that type of this can ever
be typedefed; just be safe. */
- CHECK_TYPEDEF (t);
- if (TYPE_CODE (t) == TYPE_CODE_PTR
- || TYPE_CODE (t) == TYPE_CODE_REF)
+ t = check_typedef (t);
+ if (TYPE_CODE (t) == TYPE_CODE_PTR || TYPE_IS_REFERENCE (t))
t = TYPE_TARGET_TYPE (t);
if (TYPE_CODE (t) != TYPE_CODE_STRUCT
fprintf_unfiltered (gdb_stdlog,
"lookup_symbol_aux (...) = NULL\n");
}
- return NULL;
+ return (struct block_symbol) {NULL, NULL};
}
}
}
/* Now do whatever is appropriate for LANGUAGE to look
up static and global variables. */
- sym = langdef->la_lookup_symbol_nonlocal (langdef, name, block, domain);
- if (sym != NULL)
+ result = langdef->la_lookup_symbol_nonlocal (langdef, name, block, domain);
+ if (result.symbol != NULL)
{
if (symbol_lookup_debug)
{
fprintf_unfiltered (gdb_stdlog, "lookup_symbol_aux (...) = %s\n",
- host_address_to_string (sym));
+ host_address_to_string (result.symbol));
}
- return sym;
+ return result;
}
/* Now search all static file-level symbols. Not strictly correct,
but more useful than an error. */
- sym = lookup_static_symbol (name, domain);
+ result = lookup_static_symbol (name, domain);
if (symbol_lookup_debug)
{
fprintf_unfiltered (gdb_stdlog, "lookup_symbol_aux (...) = %s\n",
- sym != NULL ? host_address_to_string (sym) : "NULL");
+ result.symbol != NULL
+ ? host_address_to_string (result.symbol)
+ : "NULL");
}
- return sym;
+ return result;
}
/* Check to see if the symbol is defined in BLOCK or its superiors.
Don't search STATIC_BLOCK or GLOBAL_BLOCK. */
-static struct symbol *
+static struct block_symbol
lookup_local_symbol (const char *name, const struct block *block,
const domain_enum domain,
enum language language)
/* Check if either no block is specified or it's a global block. */
if (static_block == NULL)
- return NULL;
+ return (struct block_symbol) {NULL, NULL};
while (block != static_block)
{
sym = lookup_symbol_in_block (name, block, domain);
if (sym != NULL)
- return sym;
+ return (struct block_symbol) {sym, block};
if (language == language_cplus || language == language_fortran)
{
- sym = cp_lookup_symbol_imports_or_template (scope, name, block,
- domain);
- if (sym != NULL)
+ struct block_symbol sym
+ = cp_lookup_symbol_imports_or_template (scope, name, block,
+ domain);
+
+ if (sym.symbol != NULL)
return sym;
}
/* We've reached the end of the function without finding a result. */
- return NULL;
+ return (struct block_symbol) {NULL, NULL};
}
/* See symtab.h. */
fprintf_unfiltered (gdb_stdlog, " = %s\n",
host_address_to_string (sym));
}
- block_found = block;
return fixup_symbol_section (sym, NULL);
}
/* See symtab.h. */
-struct symbol *
+struct block_symbol
lookup_global_symbol_from_objfile (struct objfile *main_objfile,
const char *name,
const domain_enum domain)
objfile;
objfile = objfile_separate_debug_iterate (main_objfile, objfile))
{
- struct symbol *sym = lookup_symbol_in_objfile (objfile, GLOBAL_BLOCK,
- name, domain);
+ struct block_symbol result
+ = lookup_symbol_in_objfile (objfile, GLOBAL_BLOCK, name, domain);
- if (sym != NULL)
- return sym;
+ if (result.symbol != NULL)
+ return result;
}
- return NULL;
+ return (struct block_symbol) {NULL, NULL};
}
/* Check to see if the symbol is defined in one of the OBJFILE's
depending on whether or not we want to search global symbols or
static symbols. */
-static struct symbol *
+static struct block_symbol
lookup_symbol_in_objfile_symtabs (struct objfile *objfile, int block_index,
const char *name, const domain_enum domain)
{
{
const struct blockvector *bv;
const struct block *block;
- struct symbol *sym;
+ struct block_symbol result;
bv = COMPUNIT_BLOCKVECTOR (cust);
block = BLOCKVECTOR_BLOCK (bv, block_index);
- sym = block_lookup_symbol_primary (block, name, domain);
- if (sym)
+ result.symbol = block_lookup_symbol_primary (block, name, domain);
+ result.block = block;
+ if (result.symbol != NULL)
{
if (symbol_lookup_debug > 1)
{
fprintf_unfiltered (gdb_stdlog, " = %s (block %s)\n",
- host_address_to_string (sym),
+ host_address_to_string (result.symbol),
host_address_to_string (block));
}
- block_found = block;
- return fixup_symbol_section (sym, objfile);
+ result.symbol = fixup_symbol_section (result.symbol, objfile);
+ return result;
+
}
}
if (symbol_lookup_debug > 1)
fprintf_unfiltered (gdb_stdlog, " = NULL\n");
- return NULL;
+ return (struct block_symbol) {NULL, NULL};
}
/* Wrapper around lookup_symbol_in_objfile_symtabs for search_symbols.
different. Here we're called from search_symbols where it will only
call us for the the objfile that contains a matching minsym. */
-static struct symbol *
+static struct block_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;
+ demangle_result_storage storage;
+ const char *modified_name = demangle_for_lookup (linkage_name, lang, storage);
+
if (objfile->separate_debug_objfile_backlink)
main_objfile = objfile->separate_debug_objfile_backlink;
else
cur_objfile;
cur_objfile = objfile_separate_debug_iterate (main_objfile, cur_objfile))
{
- struct symbol *sym;
+ struct block_symbol result;
- sym = lookup_symbol_in_objfile_symtabs (cur_objfile, GLOBAL_BLOCK,
- modified_name, domain);
- if (sym == NULL)
- sym = lookup_symbol_in_objfile_symtabs (cur_objfile, STATIC_BLOCK,
- modified_name, domain);
- if (sym != NULL)
- {
- do_cleanups (cleanup);
- return sym;
- }
+ result = lookup_symbol_in_objfile_symtabs (cur_objfile, GLOBAL_BLOCK,
+ modified_name, domain);
+ if (result.symbol == NULL)
+ result = lookup_symbol_in_objfile_symtabs (cur_objfile, STATIC_BLOCK,
+ modified_name, domain);
+ if (result.symbol != NULL)
+ return result;
}
- do_cleanups (cleanup);
- return NULL;
+ return (struct block_symbol) {NULL, NULL};
}
/* A helper function that throws an exception when a symbol was found
/* A helper function for various lookup routines that interfaces with
the "quick" symbol table functions. */
-static struct symbol *
+static struct block_symbol
lookup_symbol_via_quick_fns (struct objfile *objfile, int block_index,
const char *name, const domain_enum domain)
{
struct compunit_symtab *cust;
const struct blockvector *bv;
const struct block *block;
- struct symbol *sym;
+ struct block_symbol result;
if (!objfile->sf)
- return NULL;
+ return (struct block_symbol) {NULL, NULL};
if (symbol_lookup_debug > 1)
{
fprintf_unfiltered (gdb_stdlog,
"lookup_symbol_via_quick_fns (...) = NULL\n");
}
- return NULL;
+ return (struct block_symbol) {NULL, NULL};
}
bv = COMPUNIT_BLOCKVECTOR (cust);
block = BLOCKVECTOR_BLOCK (bv, block_index);
- sym = block_lookup_symbol (block, name, domain);
- if (!sym)
+ result.symbol = block_lookup_symbol (block, name, domain);
+ if (result.symbol == NULL)
error_in_psymtab_expansion (block_index, name, cust);
if (symbol_lookup_debug > 1)
{
fprintf_unfiltered (gdb_stdlog,
"lookup_symbol_via_quick_fns (...) = %s (block %s)\n",
- host_address_to_string (sym),
+ host_address_to_string (result.symbol),
host_address_to_string (block));
}
- block_found = block;
- return fixup_symbol_section (sym, objfile);
+ result.symbol = fixup_symbol_section (result.symbol, objfile);
+ result.block = block;
+ return result;
}
/* See symtab.h. */
-struct symbol *
+struct block_symbol
basic_lookup_symbol_nonlocal (const struct language_defn *langdef,
const char *name,
const struct block *block,
const domain_enum domain)
{
- struct symbol *sym;
+ struct block_symbol result;
/* NOTE: carlton/2003-05-19: The comments below were written when
this (or what turned into this) was part of lookup_symbol_aux;
the current objfile. Searching the current objfile first is useful
for both matching user expectations as well as performance. */
- sym = lookup_symbol_in_static_block (name, block, domain);
- if (sym != NULL)
- return sym;
+ result = lookup_symbol_in_static_block (name, block, domain);
+ if (result.symbol != NULL)
+ return result;
/* If we didn't find a definition for a builtin type in the static block,
search for it now. This is actually the right thing to do and can be
gdbarch = target_gdbarch ();
else
gdbarch = block_gdbarch (block);
- sym = language_lookup_primitive_type_as_symbol (langdef, gdbarch, name);
- if (sym != NULL)
- return sym;
+ result.symbol = language_lookup_primitive_type_as_symbol (langdef,
+ gdbarch, name);
+ result.block = NULL;
+ if (result.symbol != NULL)
+ return result;
}
return lookup_global_symbol (name, block, domain);
/* See symtab.h. */
-struct symbol *
+struct block_symbol
lookup_symbol_in_static_block (const char *name,
const struct block *block,
const domain_enum domain)
struct symbol *sym;
if (static_block == NULL)
- return NULL;
+ return (struct block_symbol) {NULL, NULL};
if (symbol_lookup_debug)
{
"lookup_symbol_in_static_block (...) = %s\n",
sym != NULL ? host_address_to_string (sym) : "NULL");
}
- return sym;
+ return (struct block_symbol) {sym, static_block};
}
/* Perform the standard symbol lookup of NAME in OBJFILE:
2) Search the "quick" symtabs (partial or .gdb_index).
BLOCK_INDEX is one of GLOBAL_BLOCK or STATIC_BLOCK. */
-static struct symbol *
+static struct block_symbol
lookup_symbol_in_objfile (struct objfile *objfile, int block_index,
const char *name, const domain_enum domain)
{
- struct symbol *result;
+ struct block_symbol result;
if (symbol_lookup_debug)
{
result = lookup_symbol_in_objfile_symtabs (objfile, block_index,
name, domain);
- if (result != NULL)
+ if (result.symbol != NULL)
{
if (symbol_lookup_debug)
{
fprintf_unfiltered (gdb_stdlog,
"lookup_symbol_in_objfile (...) = %s"
" (in symtabs)\n",
- host_address_to_string (result));
+ host_address_to_string (result.symbol));
}
return result;
}
{
fprintf_unfiltered (gdb_stdlog,
"lookup_symbol_in_objfile (...) = %s%s\n",
- result != NULL
- ? host_address_to_string (result)
+ result.symbol != NULL
+ ? host_address_to_string (result.symbol)
: "NULL",
- result != NULL ? " (via quick fns)" : "");
+ result.symbol != NULL ? " (via quick fns)" : "");
}
return result;
}
/* See symtab.h. */
-struct symbol *
+struct block_symbol
lookup_static_symbol (const char *name, const domain_enum domain)
{
struct symbol_cache *cache = get_symbol_cache (current_program_space);
struct objfile *objfile;
- struct symbol *result;
+ struct block_symbol result;
struct block_symbol_cache *bsc;
struct symbol_cache_slot *slot;
NULL for OBJFILE_CONTEXT. */
result = symbol_cache_lookup (cache, NULL, STATIC_BLOCK, name, domain,
&bsc, &slot);
- if (result != NULL)
+ if (result.symbol != NULL)
{
- if (result == SYMBOL_LOOKUP_FAILED)
- return NULL;
+ if (SYMBOL_LOOKUP_FAILED_P (result))
+ return (struct block_symbol) {NULL, NULL};
return result;
}
ALL_OBJFILES (objfile)
{
result = lookup_symbol_in_objfile (objfile, STATIC_BLOCK, name, domain);
- if (result != NULL)
+ if (result.symbol != NULL)
{
/* Still pass NULL for OBJFILE_CONTEXT here. */
- symbol_cache_mark_found (bsc, slot, NULL, result);
+ symbol_cache_mark_found (bsc, slot, NULL, result.symbol,
+ result.block);
return result;
}
}
/* Still pass NULL for OBJFILE_CONTEXT here. */
symbol_cache_mark_not_found (bsc, slot, NULL, name, domain);
- return NULL;
+ return (struct block_symbol) {NULL, NULL};
}
/* Private data to be used with lookup_symbol_global_iterator_cb. */
domain_enum domain;
/* The field where the callback should store the symbol if found.
- It should be initialized to NULL before the search is started. */
- struct symbol *result;
+ It should be initialized to {NULL, NULL} before the search is started. */
+ struct block_symbol result;
};
/* A callback function for gdbarch_iterate_over_objfiles_in_search_order.
struct global_sym_lookup_data *data =
(struct global_sym_lookup_data *) cb_data;
- gdb_assert (data->result == NULL);
+ gdb_assert (data->result.symbol == NULL
+ && data->result.block == NULL);
data->result = lookup_symbol_in_objfile (objfile, GLOBAL_BLOCK,
data->name, data->domain);
/* If we found a match, tell the iterator to stop. Otherwise,
keep going. */
- return (data->result != NULL);
+ return (data->result.symbol != NULL);
}
/* See symtab.h. */
-struct symbol *
+struct block_symbol
lookup_global_symbol (const char *name,
const struct block *block,
const domain_enum domain)
{
struct symbol_cache *cache = get_symbol_cache (current_program_space);
- struct symbol *sym;
+ struct block_symbol result;
struct objfile *objfile;
struct global_sym_lookup_data lookup_data;
struct block_symbol_cache *bsc;
/* First see if we can find the symbol in the cache.
This works because we use the current objfile to qualify the lookup. */
- sym = symbol_cache_lookup (cache, objfile, GLOBAL_BLOCK, name, domain,
- &bsc, &slot);
- if (sym != NULL)
+ result = symbol_cache_lookup (cache, objfile, GLOBAL_BLOCK, name, domain,
+ &bsc, &slot);
+ if (result.symbol != NULL)
{
- if (sym == SYMBOL_LOOKUP_FAILED)
- return NULL;
- return sym;
+ if (SYMBOL_LOOKUP_FAILED_P (result))
+ return (struct block_symbol) {NULL, NULL};
+ return result;
}
/* Call library-specific lookup procedure. */
if (objfile != NULL)
- sym = solib_global_lookup (objfile, name, domain);
+ result = solib_global_lookup (objfile, name, domain);
/* If that didn't work go a global search (of global blocks, heh). */
- if (sym == NULL)
+ if (result.symbol == NULL)
{
memset (&lookup_data, 0, sizeof (lookup_data));
lookup_data.name = name;
gdbarch_iterate_over_objfiles_in_search_order
(objfile != NULL ? get_objfile_arch (objfile) : target_gdbarch (),
lookup_symbol_global_iterator_cb, &lookup_data, objfile);
- sym = lookup_data.result;
+ result = lookup_data.result;
}
- if (sym != NULL)
- symbol_cache_mark_found (bsc, slot, objfile, sym);
+ if (result.symbol != NULL)
+ symbol_cache_mark_found (bsc, slot, objfile, result.symbol, result.block);
else
symbol_cache_mark_not_found (bsc, slot, objfile, name, domain);
- return sym;
+ return result;
}
int
domain_enum domain)
{
/* For C++ "struct foo { ... }" also defines a typedef for "foo".
- A Java class declaration also defines a typedef for the class.
Similarly, any Ada type declaration implicitly defines a typedef. */
if (symbol_language == language_cplus
|| symbol_language == language_d
- || symbol_language == language_java
|| symbol_language == language_ada)
{
if ((domain == VAR_DOMAIN || domain == STRUCT_DOMAIN)
bv = COMPUNIT_BLOCKVECTOR (cust);
block = BLOCKVECTOR_BLOCK (bv, block_index);
- sym = block_lookup_symbol (block, name, STRUCT_DOMAIN);
- if (!sym)
+ sym = block_find_symbol (block, name, STRUCT_DOMAIN,
+ block_find_non_opaque_type, NULL);
+ if (sym == NULL)
error_in_psymtab_expansion (block_index, name, cust);
+ gdb_assert (!TYPE_IS_OPAQUE (SYMBOL_TYPE (sym)));
+ return SYMBOL_TYPE (sym);
+}
- if (!TYPE_IS_OPAQUE (SYMBOL_TYPE (sym)))
- return SYMBOL_TYPE (sym);
+/* Subroutine of basic_lookup_transparent_type to simplify it.
+ Look up the non-opaque definition of NAME in BLOCK_INDEX of OBJFILE.
+ BLOCK_INDEX is either GLOBAL_BLOCK or STATIC_BLOCK. */
+
+static struct type *
+basic_lookup_transparent_type_1 (struct objfile *objfile, int block_index,
+ const char *name)
+{
+ const struct compunit_symtab *cust;
+ const struct blockvector *bv;
+ const struct block *block;
+ const struct symbol *sym;
+
+ ALL_OBJFILE_COMPUNITS (objfile, cust)
+ {
+ bv = COMPUNIT_BLOCKVECTOR (cust);
+ block = BLOCKVECTOR_BLOCK (bv, block_index);
+ sym = block_find_symbol (block, name, STRUCT_DOMAIN,
+ block_find_non_opaque_type, NULL);
+ if (sym != NULL)
+ {
+ gdb_assert (!TYPE_IS_OPAQUE (SYMBOL_TYPE (sym)));
+ return SYMBOL_TYPE (sym);
+ }
+ }
return NULL;
}
struct type *
basic_lookup_transparent_type (const char *name)
{
- struct symbol *sym;
- struct compunit_symtab *cust;
- const struct blockvector *bv;
struct objfile *objfile;
- struct block *block;
struct type *t;
/* Now search all the global symbols. Do the symtab's first, then
ALL_OBJFILES (objfile)
{
- ALL_OBJFILE_COMPUNITS (objfile, cust)
- {
- bv = COMPUNIT_BLOCKVECTOR (cust);
- block = BLOCKVECTOR_BLOCK (bv, GLOBAL_BLOCK);
- sym = block_lookup_symbol (block, name, STRUCT_DOMAIN);
- if (sym && !TYPE_IS_OPAQUE (SYMBOL_TYPE (sym)))
- {
- return SYMBOL_TYPE (sym);
- }
- }
+ t = basic_lookup_transparent_type_1 (objfile, GLOBAL_BLOCK, name);
+ if (t)
+ return t;
}
ALL_OBJFILES (objfile)
ALL_OBJFILES (objfile)
{
- ALL_OBJFILE_COMPUNITS (objfile, cust)
- {
- bv = COMPUNIT_BLOCKVECTOR (cust);
- block = BLOCKVECTOR_BLOCK (bv, STATIC_BLOCK);
- sym = block_lookup_symbol (block, name, STRUCT_DOMAIN);
- if (sym && !TYPE_IS_OPAQUE (SYMBOL_TYPE (sym)))
- {
- return SYMBOL_TYPE (sym);
- }
- }
+ t = basic_lookup_transparent_type_1 (objfile, STATIC_BLOCK, name);
+ if (t)
+ return t;
}
ALL_OBJFILES (objfile)
}
/* Iterate over the symbols named NAME, matching DOMAIN, in BLOCK.
-
- For each symbol that matches, CALLBACK is called. The symbol and
- DATA are passed to the callback.
-
- If CALLBACK returns zero, the iteration ends. Otherwise, the
+
+ For each symbol that matches, CALLBACK is called. The symbol is
+ passed to the callback.
+
+ If CALLBACK returns false, the iteration ends. Otherwise, the
search continues. */
void
iterate_over_symbols (const struct block *block, const char *name,
const domain_enum domain,
- symbol_found_callback_ftype *callback,
- void *data)
+ gdb::function_view<symbol_found_callback_ftype> callback)
{
struct block_iterator iter;
struct symbol *sym;
if (symbol_matches_domain (SYMBOL_LANGUAGE (sym),
SYMBOL_DOMAIN (sym), domain))
{
- if (!callback (sym, data))
+ if (!callback (sym))
return;
}
}
/* 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. */
+ of real code inside the function.
+ This function should return SALs matching those from minsym_found,
+ otherwise false multiple-locations breakpoints could be placed. */
struct symtab_and_line
find_function_start_sal (struct symbol *sym, int funfirstline)
section = SYMBOL_OBJ_SECTION (symbol_objfile (sym), sym);
sal = find_pc_sect_line (BLOCK_START (SYMBOL_BLOCK_VALUE (sym)), section, 0);
+ if (funfirstline && sal.symtab != NULL
+ && (COMPUNIT_LOCATIONS_VALID (SYMTAB_COMPUNIT (sal.symtab))
+ || SYMTAB_LANGUAGE (sal.symtab) == language_asm))
+ {
+ struct gdbarch *gdbarch = symbol_arch (sym);
+
+ sal.pc = BLOCK_START (SYMBOL_BLOCK_VALUE (sym));
+ if (gdbarch_skip_entrypoint_p (gdbarch))
+ sal.pc = gdbarch_skip_entrypoint (gdbarch, sal.pc);
+ return sal;
+ }
+
/* We always should have a line for the function start address.
If we don't, something is odd. Create a plain SAL refering
just the PC and hope that skip_prologue_sal (if requested)
static struct filename_seen_cache *
create_filename_seen_cache (void)
{
- struct filename_seen_cache *cache;
+ struct filename_seen_cache *cache = XNEW (struct filename_seen_cache);
- cache = XNEW (struct filename_seen_cache);
cache->tab = htab_create_alloc (INITIAL_FILENAME_SEEN_CACHE_SIZE,
filename_hash, filename_eq,
NULL, xcalloc, xfree);
static void
delete_filename_seen_cache (void *ptr)
{
- struct filename_seen_cache *cache = ptr;
+ struct filename_seen_cache *cache = (struct filename_seen_cache *) ptr;
htab_delete (cache->tab);
xfree (cache);
output_partial_symbol_filename (const char *filename, const char *fullname,
void *data)
{
- output_source_filename (fullname ? fullname : filename, data);
+ output_source_filename (fullname ? fullname : filename,
+ (struct output_source_filename_data *) data);
}
static void
struct symbol_search **new_head,
struct symbol_search **new_tail)
{
- struct symbol_search **symbols, *symp, *old_next;
+ struct symbol_search **symbols, *symp;
int i, j, nunique;
gdb_assert (found != NULL && nfound > 0);
/* Build an array out of the list so we can easily sort them. */
- symbols = (struct symbol_search **) xmalloc (sizeof (struct symbol_search *)
- * nfound);
+ symbols = XNEWVEC (struct symbol_search *, nfound);
+
symp = found;
for (i = 0; i < nfound; i++)
{
xfree (symbols);
}
-/* An object of this type is passed as the user_data to the
- expand_symtabs_matching method. */
-struct search_symbols_data
-{
- int nfiles;
- const char **files;
-
- /* It is true if PREG contains valid data, false otherwise. */
- unsigned preg_p : 1;
- regex_t preg;
-};
-
-/* A callback for expand_symtabs_matching. */
-
-static int
-search_symbols_file_matches (const char *filename, void *user_data,
- int basenames)
-{
- struct search_symbols_data *data = user_data;
-
- return file_matches (filename, data->files, data->nfiles, basenames);
-}
-
-/* A callback for expand_symtabs_matching. */
-
-static int
-search_symbols_name_matches (const char *symname, void *user_data)
-{
- struct search_symbols_data *data = user_data;
-
- return !data->preg_p || regexec (&data->preg, symname, 0, NULL, 0) == 0;
-}
-
/* Search the symbol table for matches to the regular expression REGEXP,
returning the results in *MATCHES.
enum minimal_symbol_type ourtype4;
struct symbol_search *found;
struct symbol_search *tail;
- struct search_symbols_data datum;
int nfound;
+ /* This is true if PREG contains valid data, false otherwise. */
+ bool preg_p;
+ regex_t preg;
/* OLD_CHAIN .. RETVAL_CHAIN is always freed, RETVAL_CHAIN .. current
CLEANUP_CHAIN is freed only in the case of an error. */
ourtype4 = types4[kind];
*matches = NULL;
- datum.preg_p = 0;
+ preg_p = false;
if (regexp != NULL)
{
}
}
- errcode = regcomp (&datum.preg, regexp,
+ errcode = regcomp (&preg, regexp,
REG_NOSUB | (case_sensitivity == case_sensitive_off
? REG_ICASE : 0));
if (errcode != 0)
{
- char *err = get_regcomp_error (errcode, &datum.preg);
+ char *err = get_regcomp_error (errcode, &preg);
make_cleanup (xfree, err);
error (_("Invalid regexp (%s): %s"), err, regexp);
}
- datum.preg_p = 1;
- make_regfree_cleanup (&datum.preg);
+ preg_p = true;
+ make_regfree_cleanup (&preg);
}
/* 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. */
-
- datum.nfiles = nfiles;
- datum.files = files;
- expand_symtabs_matching ((nfiles == 0
- ? NULL
- : search_symbols_file_matches),
- search_symbols_name_matches,
- NULL, kind, &datum);
+ expand_symtabs_matching ([&] (const char *filename, bool basenames)
+ {
+ return file_matches (filename, files, nfiles,
+ basenames);
+ },
+ [&] (const char *symname)
+ {
+ return (!preg_p || regexec (&preg, symname,
+ 0, NULL, 0) == 0);
+ },
+ NULL,
+ kind);
/* Here, we search through the minimal symbol tables for functions
and variables that match, and force their symbols to be read.
|| MSYMBOL_TYPE (msymbol) == ourtype3
|| MSYMBOL_TYPE (msymbol) == ourtype4)
{
- if (!datum.preg_p
- || regexec (&datum.preg, MSYMBOL_NATURAL_NAME (msymbol), 0,
+ if (!preg_p
+ || regexec (&preg, MSYMBOL_NATURAL_NAME (msymbol), 0,
NULL, 0) == 0)
{
/* Note: An important side-effect of these lookup functions
(MSYMBOL_VALUE_ADDRESS (objfile, msymbol)) == NULL)
: (lookup_symbol_in_objfile_from_linkage_name
(objfile, MSYMBOL_LINKAGE_NAME (msymbol), VAR_DOMAIN)
- == NULL))
+ .symbol == NULL))
found_misc = 1;
}
}
files, nfiles, 1))
&& file_matches (symtab_to_fullname (real_symtab),
files, nfiles, 0)))
- && ((!datum.preg_p
- || regexec (&datum.preg, SYMBOL_NATURAL_NAME (sym), 0,
+ && ((!preg_p
+ || regexec (&preg, SYMBOL_NATURAL_NAME (sym), 0,
NULL, 0) == 0)
&& ((kind == VARIABLES_DOMAIN
&& SYMBOL_CLASS (sym) != LOC_TYPEDEF
&& SYMBOL_CLASS (sym) == LOC_TYPEDEF))))
{
/* match */
- struct symbol_search *psr = (struct symbol_search *)
- xmalloc (sizeof (struct symbol_search));
+ struct symbol_search *psr = XCNEW (struct symbol_search);
+
psr->block = i;
psr->symbol = sym;
- memset (&psr->msymbol, 0, sizeof (psr->msymbol));
psr->next = NULL;
if (tail == NULL)
found = psr;
|| MSYMBOL_TYPE (msymbol) == ourtype3
|| MSYMBOL_TYPE (msymbol) == ourtype4)
{
- if (!datum.preg_p
- || regexec (&datum.preg, MSYMBOL_NATURAL_NAME (msymbol), 0,
+ if (!preg_p
+ || regexec (&preg, MSYMBOL_NATURAL_NAME (msymbol), 0,
NULL, 0) == 0)
{
/* For functions we can do a quick check of whether the
{
if (lookup_symbol_in_objfile_from_linkage_name
(objfile, MSYMBOL_LINKAGE_NAME (msymbol), VAR_DOMAIN)
- == NULL)
+ .symbol == NULL)
{
/* match */
- struct symbol_search *psr = (struct symbol_search *)
- xmalloc (sizeof (struct symbol_search));
+ struct symbol_search *psr = XNEW (struct symbol_search);
psr->block = i;
psr->msymbol.minsym = msymbol;
psr->msymbol.objfile = objfile;
char *local_name;
colon_index = colon - regexp;
- local_name = alloca (colon_index + 1);
+ local_name = (char *) alloca (colon_index + 1);
memcpy (local_name, regexp, colon_index);
local_name[colon_index--] = 0;
while (isspace (local_name[colon_index]))
if (newlen > len)
{
- string = xrealloc (string, newlen);
+ string = (char *) xrealloc (string, newlen);
len = newlen;
}
strcpy (string, fullname);
if (newlen > len)
{
- string = xrealloc (string, newlen);
+ string = (char *) xrealloc (string, newlen);
len = newlen;
}
strcpy (string, "'");
static void
do_free_completion_list (void *list)
{
- free_completion_list (list);
+ free_completion_list ((VEC (char_ptr) **) list);
}
/* Helper routine for make_symbol_completion_list. */
if (word == sym_text)
{
- newobj = xmalloc (strlen (symname) + 5);
+ newobj = (char *) xmalloc (strlen (symname) + 5);
strcpy (newobj, symname);
}
else if (word > sym_text)
{
/* Return some portion of symname. */
- newobj = xmalloc (strlen (symname) + 5);
+ newobj = (char *) xmalloc (strlen (symname) + 5);
strcpy (newobj, symname + (word - sym_text));
}
else
{
/* Return some of SYM_TEXT plus symname. */
- newobj = xmalloc (strlen (symname) + (sym_text - word) + 5);
+ newobj = (char *) xmalloc (strlen (symname) + (sym_text - word) + 5);
strncpy (newobj, word, sym_text - word);
newobj[sym_text - word] = '\0';
strcat (newobj, symname);
tmplen = 1024;
else
tmplen *= 2;
- tmp = xrealloc (tmp, tmplen);
+ tmp = (char *) xrealloc (tmp, tmplen);
}
selector = strchr (method, ' ');
if (selector != NULL)
}
}
-/* Type of the user_data argument passed to add_macro_name,
- symbol_completion_matcher and symtab_expansion_callback. */
-
-struct add_name_data
-{
- /* Arguments required by completion_list_add_name. */
- const char *sym_text;
- int sym_text_len;
- const char *text;
- const char *word;
-
- /* Extra argument required for add_symtab_completions. */
- enum type_code code;
-};
-
-/* A callback used with macro_for_each and macro_for_each_in_scope.
- This adds a macro's name to the current completion list. */
-
-static void
-add_macro_name (const char *name, const struct macro_definition *ignore,
- struct macro_source_file *ignore2, int ignore3,
- void *user_data)
-{
- struct add_name_data *datum = (struct add_name_data *) user_data;
-
- completion_list_add_name (name,
- datum->sym_text, datum->sym_text_len,
- datum->text, datum->word);
-}
-
-/* A callback for expand_symtabs_matching. */
-
-static int
-symbol_completion_matcher (const char *name, void *user_data)
-{
- struct add_name_data *datum = (struct add_name_data *) user_data;
-
- return compare_symbol_name (name, datum->sym_text, datum->sym_text_len);
-}
-
/* Add matching symbols from SYMTAB to the current completion list. */
static void
struct block_iterator iter;
int i;
+ if (cust == NULL)
+ return;
+
for (i = GLOBAL_BLOCK; i <= STATIC_BLOCK; i++)
{
QUIT;
}
}
-/* Callback to add completions to the current list when symbol tables
- are expanded during completion list generation. */
-
-static void
-symtab_expansion_callback (struct compunit_symtab *symtab,
- void *user_data)
-{
- struct add_name_data *datum = (struct add_name_data *) user_data;
-
- add_symtab_completions (symtab,
- datum->sym_text, datum->sym_text_len,
- datum->text, datum->word,
- datum->code);
-}
-
static void
default_make_symbol_completion_list_break_on_1 (const char *text,
const char *word,
const char *sym_text;
/* Length of sym_text. */
int sym_text_len;
- struct add_name_data datum;
struct cleanup *cleanups;
/* Now look for the symbol we are supposed to complete on. */
/* Prepare SYM_TEXT_LEN for compare_symbol_name. */
if (current_language->la_language == language_cplus
- || current_language->la_language == language_java
|| current_language->la_language == language_fortran)
{
/* These languages may have parameters entered by user but they are never
present in the partial symbol tables. */
- const char *cs = memchr (sym_text, '(', sym_text_len);
+ const char *cs = (const char *) memchr (sym_text, '(', sym_text_len);
if (cs)
sym_text_len = cs - sym_text;
completion_tracker = new_completion_tracker ();
cleanups = make_cleanup_free_completion_tracker (&completion_tracker);
- datum.sym_text = sym_text;
- datum.sym_text_len = sym_text_len;
- datum.text = text;
- datum.word = word;
- datum.code = code;
-
/* 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
add_symtab_completions (cust, sym_text, sym_text_len, text, word,
code);
- /* Look through the partial symtabs for all symbols which begin
- by matching SYM_TEXT. Expand all CUs that you find to the list.
- symtab_expansion_callback is called for each expanded symtab,
- causing those symtab's completions to be added to the list too. */
- expand_symtabs_matching (NULL, symbol_completion_matcher,
- symtab_expansion_callback, ALL_DOMAIN,
- &datum);
+ /* Look through the partial symtabs for all symbols which begin by
+ matching SYM_TEXT. Expand all CUs that you find to the list. */
+ expand_symtabs_matching (NULL,
+ [&] (const char *name) /* symbol matcher */
+ {
+ return compare_symbol_name (name,
+ sym_text,
+ sym_text_len);
+ },
+ [&] (compunit_symtab *symtab) /* expansion notify */
+ {
+ add_symtab_completions (symtab,
+ sym_text, sym_text_len,
+ text, word, code);
+ },
+ ALL_DOMAIN);
/* Search upwards from currently selected frame (so that we can
complete on local vars). Also catch fields of types defined in
{
struct macro_scope *scope;
+ /* This adds a macro's name to the current completion list. */
+ auto add_macro_name = [&] (const char *macro_name,
+ const macro_definition *,
+ macro_source_file *,
+ int)
+ {
+ completion_list_add_name (macro_name,
+ sym_text, sym_text_len,
+ text, word);
+ };
+
/* Add any macros visible in the default scope. Note that this
may yield the occasional wrong result, because an expression
might be evaluated in a scope other than the default. For
if (scope)
{
macro_for_each_in_scope (scope->file, scope->line,
- add_macro_name, &datum);
+ add_macro_name);
xfree (scope);
}
/* User-defined macros are always visible. */
- macro_for_each (macro_user_macros, add_macro_name, &datum);
+ macro_for_each (macro_user_macros, add_macro_name);
}
do_cleanups (cleanups);
enum type_code code)
{
struct cleanup *back_to;
- volatile struct gdb_exception except;
return_val = NULL;
back_to = make_cleanup (do_free_completion_list, &return_val);
- TRY_CATCH (except, RETURN_MASK_ERROR)
+ TRY
{
default_make_symbol_completion_list_break_on_1 (text, word,
break_on, code);
}
- if (except.reason < 0)
+ CATCH (except, RETURN_MASK_ERROR)
{
if (except.error != MAX_COMPLETIONS_REACHED_ERROR)
throw_exception (except);
}
+ END_CATCH
discard_cleanups (back_to);
return return_val;
/* Like make_symbol_completion_list, but returns a list of symbols
defined in a source file FILE. */
-VEC (char_ptr) *
-make_file_symbol_completion_list (const char *text, const char *word,
- const char *srcfile)
+static VEC (char_ptr) *
+make_file_symbol_completion_list_1 (const char *text, const char *word,
+ const char *srcfile)
{
- struct symbol *sym;
struct symtab *s;
- struct block *b;
- struct block_iterator iter;
/* The symbol we are completing on. Points in same buffer as text. */
const char *sym_text;
/* Length of sym_text. */
sym_text_len = strlen (sym_text);
- return_val = NULL;
-
/* Find the symtab for SRCFILE (this loads it if it was not yet read
in). */
s = lookup_symtab (srcfile);
/* Go through this symtab and check the externs and statics for
symbols which match. */
+ add_symtab_completions (SYMTAB_COMPUNIT (s),
+ sym_text, sym_text_len,
+ text, word, TYPE_CODE_UNDEF);
+
+ return (return_val);
+}
+
+/* Wrapper around make_file_symbol_completion_list_1
+ to handle MAX_COMPLETIONS_REACHED_ERROR. */
- b = BLOCKVECTOR_BLOCK (SYMTAB_BLOCKVECTOR (s), GLOBAL_BLOCK);
- ALL_BLOCK_SYMBOLS (b, iter, sym)
+VEC (char_ptr) *
+make_file_symbol_completion_list (const char *text, const char *word,
+ const char *srcfile)
+{
+ struct cleanup *back_to, *cleanups;
+
+ completion_tracker = new_completion_tracker ();
+ cleanups = make_cleanup_free_completion_tracker (&completion_tracker);
+ return_val = NULL;
+ back_to = make_cleanup (do_free_completion_list, &return_val);
+
+ TRY
{
- COMPLETION_LIST_ADD_SYMBOL (sym, sym_text, sym_text_len, text, word);
+ make_file_symbol_completion_list_1 (text, word, srcfile);
}
-
- b = BLOCKVECTOR_BLOCK (SYMTAB_BLOCKVECTOR (s), STATIC_BLOCK);
- ALL_BLOCK_SYMBOLS (b, iter, sym)
+ CATCH (except, RETURN_MASK_ERROR)
{
- COMPLETION_LIST_ADD_SYMBOL (sym, sym_text, sym_text_len, text, word);
+ if (except.error != MAX_COMPLETIONS_REACHED_ERROR)
+ throw_exception (except);
}
+ END_CATCH
- return (return_val);
+ discard_cleanups (back_to);
+ do_cleanups (cleanups);
+ return return_val;
}
/* A helper function for make_source_files_completion_list. It adds
if (word == text)
{
/* Return exactly fname. */
- newobj = xmalloc (fnlen + 5);
+ newobj = (char *) xmalloc (fnlen + 5);
strcpy (newobj, fname);
}
else if (word > text)
{
/* Return some portion of fname. */
- newobj = xmalloc (fnlen + 5);
+ newobj = (char *) xmalloc (fnlen + 5);
strcpy (newobj, fname + (word - text));
}
else
{
/* Return some of TEXT plus fname. */
- newobj = xmalloc (fnlen + (text - word) + 5);
+ newobj = (char *) xmalloc (fnlen + (text - word) + 5);
strncpy (newobj, word, text - word);
newobj[text - word] = '\0';
strcat (newobj, fname);
maybe_add_partial_symtab_filename (const char *filename, const char *fullname,
void *user_data)
{
- struct add_partial_filename_data *data = user_data;
+ struct add_partial_filename_data *data
+ = (struct add_partial_filename_data *) user_data;
if (not_interesting_fname (filename))
return;
static struct main_info *
get_main_info (void)
{
- struct main_info *info = program_space_data (current_program_space,
+ struct main_info *info
+ = (struct main_info *) program_space_data (current_program_space,
main_progspace_key);
if (info == NULL)
static void
main_info_cleanup (struct program_space *pspace, void *data)
{
- struct main_info *info = data;
+ struct main_info *info = (struct main_info *) data;
if (info != NULL)
xfree (info->name_of_main);
gdb_assert (ops != NULL);
gdb_assert (ops->tracepoint_var_ref != NULL);
gdb_assert (ops->describe_location != NULL);
- gdb_assert (ops->read_needs_frame != NULL);
+ gdb_assert (ops->get_symbol_read_needs != NULL);
gdb_assert (ops->read_variable != NULL);
return result;
int i;
for (i = 0; i < LOC_FINAL_VALUE; ++i)
- symbol_impl[i].aclass = i;
+ symbol_impl[i].aclass = (enum address_class) i;
}
\f
add_com ("rbreak", class_breakpoint, rbreak_command,
_("Set a breakpoint for all functions matching REGEXP."));
- if (xdb_commands)
- {
- add_com ("lf", class_info, sources_info,
- _("Source files in the program"));
- add_com ("lg", class_info, variables_info, _("\
-All global and static variable names, or those matching REGEXP."));
- }
-
add_setshow_enum_cmd ("multiple-symbols", no_class,
multiple_symbols_modes, &multiple_symbols_mode,
_("\