/* Symbol table lookup for the GNU debugger, GDB.
- Copyright (C) 1986, 1987, 1988, 1989, 1990, 1991, 1992, 1993, 1994, 1995,
- 1996, 1997, 1998, 1999, 2000, 2001, 2002, 2003, 2004, 2007, 2008, 2009,
- 2010, 2011 Free Software Foundation, Inc.
+ Copyright (C) 1986-2013 Free Software Foundation, Inc.
This file is part of GDB.
#include "symfile.h"
#include "objfiles.h"
#include "gdbcmd.h"
-#include "call-cmds.h"
#include "gdb_regex.h"
#include "expression.h"
#include "language.h"
#include "demangle.h"
#include "inferior.h"
-#include "linespec.h"
#include "source.h"
#include "filenames.h" /* for FILENAME_CMP */
#include "objc-lang.h"
#include "d-lang.h"
#include "ada-lang.h"
+#include "go-lang.h"
#include "p-lang.h"
#include "addrmap.h"
+#include "cli/cli-utils.h"
#include "hashtab.h"
#include "macroscope.h"
#include "psymtab.h"
+#include "parser-defs.h"
/* Prototypes for local functions */
-static void completion_list_add_name (char *, char *, int, char *, char *);
-
static void rbreak_command (char *, int);
static void types_info (char *, int);
static void sources_info (char *, int);
-static void output_source_filename (const char *, int *);
-
-static int find_line_common (struct linetable *, int, int *);
-
-/* This one is used by linespec.c */
-
-char *operator_chars (char *p, char **end);
+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,
- int *is_a_field_of_this);
+ struct field_of_this_result *is_a_field_of_this);
static
struct symbol *lookup_symbol_aux_local (const char *name,
/* */
+/* When non-zero, print debugging messages related to symtab creation. */
+int symtab_create_debug = 0;
+
+/* Non-zero if a file may be known by two different basenames.
+ This is the uncommon case, and significantly slows down gdb.
+ Default set to "off" to not slow down the common case. */
+int basenames_may_differ = 0;
+
/* Allow the user to configure the debugger behavior with respect
to multiple-choice menus when more than one symbol matches during
a symbol lookup. */
const char multiple_symbols_ask[] = "ask";
const char multiple_symbols_all[] = "all";
const char multiple_symbols_cancel[] = "cancel";
-static const char *multiple_symbols_modes[] =
+static const char *const multiple_symbols_modes[] =
{
multiple_symbols_ask,
multiple_symbols_all,
const struct block *block_found;
+/* See whether FILENAME matches SEARCH_NAME using the rule that we
+ advertise to the user. (The manual's description of linespecs
+ describes what we advertise). Returns true if they match, false
+ otherwise. */
+
+int
+compare_filenames_for_search (const char *filename, const char *search_name)
+{
+ int len = strlen (filename);
+ size_t search_len = strlen (search_name);
+
+ if (len < search_len)
+ return 0;
+
+ /* The tail of FILENAME must match. */
+ if (FILENAME_CMP (filename + len - search_len, search_name) != 0)
+ return 0;
+
+ /* Either the names must completely match, or the character
+ preceding the trailing SEARCH_NAME segment of FILENAME must be a
+ directory separator.
+
+ The check !IS_ABSOLUTE_PATH ensures SEARCH_NAME "/dir/file.c"
+ cannot match FILENAME "/path//dir/file.c" - as user has requested
+ absolute path. The sama applies for "c:\file.c" possibly
+ incorrectly hypothetically matching "d:\dir\c:\file.c".
+
+ The HAS_DRIVE_SPEC purpose is to make FILENAME "c:file.c"
+ compatible with SEARCH_NAME "file.c". In such case a compiler had
+ to put the "c:file.c" name into debug info. Such compatibility
+ works only on GDB built for DOS host. */
+ return (len == search_len
+ || (!IS_ABSOLUTE_PATH (search_name)
+ && IS_DIR_SEPARATOR (filename[len - search_len - 1]))
+ || (HAS_DRIVE_SPEC (filename)
+ && STRIP_DRIVE_SPEC (filename) == &filename[len - search_len]));
+}
+
+/* Check for a symtab of a specific name by searching some symtabs.
+ This is a helper function for callbacks of iterate_over_symtabs.
+
+ The return value, NAME, REAL_PATH, CALLBACK, and DATA
+ are identical to the `map_symtabs_matching_filename' method of
+ quick_symbol_functions.
+
+ FIRST and AFTER_LAST indicate the range of symtabs to search.
+ AFTER_LAST is one past the last symtab to search; NULL means to
+ search until the end of the list. */
+
+int
+iterate_over_some_symtabs (const char *name,
+ const char *real_path,
+ int (*callback) (struct symtab *symtab,
+ void *data),
+ void *data,
+ struct symtab *first,
+ struct symtab *after_last)
+{
+ struct symtab *s = NULL;
+ const char* base_name = lbasename (name);
+
+ for (s = first; s != NULL && s != after_last; s = s->next)
+ {
+ if (compare_filenames_for_search (s->filename, name))
+ {
+ if (callback (s, data))
+ return 1;
+ continue;
+ }
+
+ /* Before we invoke realpath, which can get expensive when many
+ files are involved, do a quick comparison of the basenames. */
+ if (! basenames_may_differ
+ && FILENAME_CMP (base_name, lbasename (s->filename)) != 0)
+ continue;
+
+ if (compare_filenames_for_search (symtab_to_fullname (s), name))
+ {
+ if (callback (s, data))
+ return 1;
+ continue;
+ }
+
+ /* If the user gave us an absolute path, try to find the file in
+ this symtab and use its absolute path. */
+
+ if (real_path != NULL)
+ {
+ const char *fullname = symtab_to_fullname (s);
+
+ gdb_assert (IS_ABSOLUTE_PATH (real_path));
+ gdb_assert (IS_ABSOLUTE_PATH (name));
+ if (FILENAME_CMP (real_path, fullname) == 0)
+ {
+ if (callback (s, data))
+ return 1;
+ continue;
+ }
+ }
+ }
+
+ return 0;
+}
+
/* 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. */
+ in the symtab filename will also work.
-struct symtab *
-lookup_symtab (const char *name)
+ Calls CALLBACK with each symtab that is found and with the supplied
+ DATA. If CALLBACK returns true, the search stops. */
+
+void
+iterate_over_symtabs (const char *name,
+ int (*callback) (struct symtab *symtab,
+ void *data),
+ void *data)
{
- int found;
- struct symtab *s = NULL;
struct objfile *objfile;
char *real_path = NULL;
- char *full_path = NULL;
- struct cleanup *cleanup;
-
- cleanup = make_cleanup (null_cleanup, NULL);
+ struct cleanup *cleanups = make_cleanup (null_cleanup, NULL);
/* Here we are interested in canonicalizing an absolute path, not
absolutizing a relative path. */
if (IS_ABSOLUTE_PATH (name))
{
- full_path = xfullpath (name);
- make_cleanup (xfree, full_path);
real_path = gdb_realpath (name);
make_cleanup (xfree, real_path);
+ gdb_assert (IS_ABSOLUTE_PATH (real_path));
}
-got_symtab:
-
- /* First, search for an exact match. */
-
- ALL_SYMTABS (objfile, s)
+ ALL_OBJFILES (objfile)
{
- if (FILENAME_CMP (name, s->filename) == 0)
- {
- do_cleanups (cleanup);
- return s;
- }
-
- /* If the user gave us an absolute path, try to find the file in
- this symtab and use its absolute path. */
-
- if (full_path != NULL)
- {
- const char *fp = symtab_to_fullname (s);
-
- if (fp != NULL && FILENAME_CMP (full_path, fp) == 0)
- {
- do_cleanups (cleanup);
- return s;
- }
- }
-
- if (real_path != NULL)
+ if (iterate_over_some_symtabs (name, real_path, callback, data,
+ objfile->symtabs, NULL))
{
- char *fullname = symtab_to_fullname (s);
-
- if (fullname != NULL)
- {
- char *rp = gdb_realpath (fullname);
-
- make_cleanup (xfree, rp);
- if (FILENAME_CMP (real_path, rp) == 0)
- {
- do_cleanups (cleanup);
- return s;
- }
- }
+ do_cleanups (cleanups);
+ return;
}
}
- /* Now, search for a matching tail (only if name doesn't have any dirs). */
-
- if (lbasename (name) == name)
- ALL_SYMTABS (objfile, s)
- {
- if (FILENAME_CMP (lbasename (s->filename), name) == 0)
- {
- do_cleanups (cleanup);
- return s;
- }
- }
-
/* Same search rules as above apply here, but now we look thru the
psymtabs. */
- found = 0;
ALL_OBJFILES (objfile)
{
if (objfile->sf
- && objfile->sf->qf->lookup_symtab (objfile, name, full_path, real_path,
- &s))
+ && objfile->sf->qf->map_symtabs_matching_filename (objfile,
+ name,
+ real_path,
+ callback,
+ data))
{
- found = 1;
- break;
+ do_cleanups (cleanups);
+ return;
}
}
- if (s != NULL)
- {
- do_cleanups (cleanup);
- return s;
- }
- if (!found)
- {
- do_cleanups (cleanup);
- return NULL;
- }
+ 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
+ symtab, or NULL. */
+
+struct symtab *
+lookup_symtab (const char *name)
+{
+ struct symtab *result = NULL;
- /* At this point, we have located the psymtab for this file, but
- the conversion to a symtab has failed. This usually happens
- when we are looking up an include file. In this case,
- PSYMTAB_TO_SYMTAB doesn't return a symtab, even though one has
- been created. So, we need to run through the symtabs again in
- order to find the file.
- XXX - This is a crock, and should be fixed inside of the
- symbol parsing routines. */
- goto got_symtab;
+ iterate_over_symtabs (name, lookup_symtab_callback, &result);
+ return result;
}
+
\f
/* Mangle a GDB method stub type. This actually reassembles the pieces of the
full method name, which consist of the class name (from T), the unadorned
char *mangled_name;
struct fn_field *f = TYPE_FN_FIELDLIST1 (type, method_id);
struct fn_field *method = &f[signature_id];
- char *field_name = TYPE_FN_FIELDLIST_NAME (type, method_id);
+ const char *field_name = TYPE_FN_FIELDLIST_NAME (type, method_id);
const char *physname = TYPE_FN_FIELD_PHYSNAME (f, signature_id);
- char *newname = type_name_no_tag (type);
+ const char *newname = type_name_no_tag (type);
/* Does the form of physname indicate that it is the full mangled name
of a constructor (not just the args)? */
if (len == 0)
{
- sprintf (buf, "__%s%s", const_prefix, volatile_prefix);
+ xsnprintf (buf, sizeof (buf), "__%s%s", const_prefix, volatile_prefix);
}
else if (physname[0] == 't' || physname[0] == 'Q')
{
/* The physname for template and qualified methods already includes
the class name. */
- sprintf (buf, "__%s%s", const_prefix, volatile_prefix);
+ xsnprintf (buf, sizeof (buf), "__%s%s", const_prefix, volatile_prefix);
newname = NULL;
len = 0;
}
else
{
- sprintf (buf, "__%s%s%d", const_prefix, volatile_prefix, len);
+ xsnprintf (buf, sizeof (buf), "__%s%s%d", const_prefix,
+ volatile_prefix, len);
}
mangled_name_len = ((is_constructor ? 0 : strlen (field_name))
+ strlen (buf) + len + strlen (physname) + 1);
static void
symbol_init_cplus_specific (struct general_symbol_info *gsymbol,
- struct objfile *objfile)
+ struct obstack *obstack)
{
/* A language_specific structure should not have been previously
initialized. */
gdb_assert (gsymbol->language_specific.cplus_specific == NULL);
- gdb_assert (objfile != NULL);
+ gdb_assert (obstack != NULL);
gsymbol->language_specific.cplus_specific =
- OBSTACK_ZALLOC (&objfile->objfile_obstack, struct cplus_specific);
+ OBSTACK_ZALLOC (obstack, struct cplus_specific);
}
/* Set the demangled name of GSYMBOL to NAME. NAME must be already
correctly allocated. For C++ symbols a cplus_specific struct is
allocated so OBJFILE must not be NULL. If this is a non C++ symbol
OBJFILE can be NULL. */
+
void
symbol_set_demangled_name (struct general_symbol_info *gsymbol,
- char *name,
- struct objfile *objfile)
+ const char *name,
+ struct obstack *obstack)
{
if (gsymbol->language == language_cplus)
{
if (gsymbol->language_specific.cplus_specific == NULL)
- symbol_init_cplus_specific (gsymbol, objfile);
+ symbol_init_cplus_specific (gsymbol, obstack);
gsymbol->language_specific.cplus_specific->demangled_name = name;
}
+ else if (gsymbol->language == language_ada)
+ {
+ if (name == NULL)
+ {
+ gsymbol->ada_mangled = 0;
+ gsymbol->language_specific.obstack = obstack;
+ }
+ else
+ {
+ gsymbol->ada_mangled = 1;
+ gsymbol->language_specific.mangled_lang.demangled_name = name;
+ }
+ }
else
gsymbol->language_specific.mangled_lang.demangled_name = name;
}
/* Return the demangled name of GSYMBOL. */
-char *
+
+const char *
symbol_get_demangled_name (const struct general_symbol_info *gsymbol)
{
if (gsymbol->language == language_cplus)
else
return NULL;
}
- else
- return gsymbol->language_specific.mangled_lang.demangled_name;
+ else if (gsymbol->language == language_ada)
+ {
+ if (!gsymbol->ada_mangled)
+ return NULL;
+ /* Fall through. */
+ }
+
+ return gsymbol->language_specific.mangled_lang.demangled_name;
}
\f
/* Initialize the language dependent portion of a symbol
depending upon the language for the symbol. */
+
void
symbol_set_language (struct general_symbol_info *gsymbol,
- enum language language)
+ enum language language,
+ struct obstack *obstack)
{
gsymbol->language = language;
if (gsymbol->language == language_d
+ || gsymbol->language == language_go
|| gsymbol->language == language_java
|| gsymbol->language == language_objc
|| gsymbol->language == language_fortran)
{
- symbol_set_demangled_name (gsymbol, NULL, NULL);
+ symbol_set_demangled_name (gsymbol, NULL, obstack);
+ }
+ else if (gsymbol->language == language_ada)
+ {
+ gdb_assert (gsymbol->ada_mangled == 0);
+ gsymbol->language_specific.obstack = obstack;
}
else if (gsymbol->language == language_cplus)
gsymbol->language_specific.cplus_specific = NULL;
/* Objects of this type are stored in the demangled name hash table. */
struct demangled_name_entry
{
- char *mangled;
+ const char *mangled;
char demangled[1];
};
/* Hash function for the demangled name hash. */
+
static hashval_t
hash_demangled_name_entry (const void *data)
{
}
/* Equality function for the demangled name hash. */
+
static int
eq_demangled_name_entry (const void *a, const void *b)
{
|| gsymbol->language == language_auto)
{
demangled =
- cplus_demangle (mangled, DMGL_PARAMS | DMGL_ANSI | DMGL_VERBOSE);
+ gdb_demangle (mangled, DMGL_PARAMS | DMGL_ANSI);
if (demangled != NULL)
{
gsymbol->language = language_cplus;
if (gsymbol->language == language_java)
{
demangled =
- cplus_demangle (mangled,
- DMGL_PARAMS | DMGL_ANSI | DMGL_JAVA);
+ gdb_demangle (mangled,
+ DMGL_PARAMS | DMGL_ANSI | DMGL_JAVA);
if (demangled != NULL)
{
gsymbol->language = language_java;
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)
+ {
+ demangled = go_demangle (mangled, 0);
+ if (demangled != NULL)
+ {
+ gsymbol->language = language_go;
+ 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
name with the symbol, we don't need to use the same trick
as Java. */
if (!copy_name)
- gsymbol->name = (char *) linkage_name;
+ gsymbol->name = linkage_name;
else
{
- gsymbol->name = obstack_alloc (&objfile->objfile_obstack, len + 1);
- memcpy (gsymbol->name, linkage_name, len);
- gsymbol->name[len] = '\0';
+ char *name = obstack_alloc (&objfile->objfile_obstack, len + 1);
+
+ memcpy (name, linkage_name, len);
+ name[len] = '\0';
+ gsymbol->name = name;
}
- symbol_set_demangled_name (gsymbol, NULL, NULL);
+ symbol_set_demangled_name (gsymbol, NULL, &objfile->objfile_obstack);
return;
}
linkage_name_copy = linkage_name;
}
- entry.mangled = (char *) lookup_name;
+ entry.mangled = lookup_name;
slot = ((struct demangled_name_entry **)
htab_find_slot (objfile->demangled_names_hash,
&entry, INSERT));
/* If this name is not in the hash table, add it. */
- if (*slot == NULL)
+ if (*slot == NULL
+ /* A C version of the symbol may have already snuck into the table.
+ This happens to, e.g., main.init (__go_init_main). Cope. */
+ || (gsymbol->language == language_go
+ && (*slot)->demangled[0] == '\0'))
{
char *demangled_name = symbol_find_demangled_name (gsymbol,
linkage_name_copy);
offsetof (struct demangled_name_entry,
demangled)
+ demangled_len + 1);
- (*slot)->mangled = (char *) lookup_name;
+ (*slot)->mangled = lookup_name;
}
else
{
+ char *mangled_ptr;
+
/* If we must copy the mangled name, put it directly after
the demangled name so we can have a single
allocation. */
offsetof (struct demangled_name_entry,
demangled)
+ lookup_len + demangled_len + 2);
- (*slot)->mangled = &((*slot)->demangled[demangled_len + 1]);
- strcpy ((*slot)->mangled, lookup_name);
+ mangled_ptr = &((*slot)->demangled[demangled_len + 1]);
+ strcpy (mangled_ptr, lookup_name);
+ (*slot)->mangled = mangled_ptr;
}
if (demangled_name != NULL)
gsymbol->name = (*slot)->mangled + lookup_len - len;
if ((*slot)->demangled[0] != '\0')
- symbol_set_demangled_name (gsymbol, (*slot)->demangled, objfile);
+ symbol_set_demangled_name (gsymbol, (*slot)->demangled,
+ &objfile->objfile_obstack);
else
- symbol_set_demangled_name (gsymbol, NULL, objfile);
+ symbol_set_demangled_name (gsymbol, NULL, &objfile->objfile_obstack);
}
/* Return the source code name of a symbol. In languages where
demangling is necessary, this is the demangled name. */
-char *
+const char *
symbol_natural_name (const struct general_symbol_info *gsymbol)
{
switch (gsymbol->language)
{
case language_cplus:
case language_d:
+ case language_go:
case language_java:
case language_objc:
case language_fortran:
return symbol_get_demangled_name (gsymbol);
break;
case language_ada:
- if (symbol_get_demangled_name (gsymbol) != NULL)
- return symbol_get_demangled_name (gsymbol);
- else
- return ada_decode_symbol (gsymbol);
- break;
+ return ada_decode_symbol (gsymbol);
default:
break;
}
/* Return the demangled name for a symbol based on the language for
that symbol. If no demangled name exists, return NULL. */
-char *
+
+const char *
symbol_demangled_name (const struct general_symbol_info *gsymbol)
{
+ const char *dem_name = NULL;
+
switch (gsymbol->language)
{
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)
- return symbol_get_demangled_name (gsymbol);
+ dem_name = symbol_get_demangled_name (gsymbol);
break;
case language_ada:
- if (symbol_get_demangled_name (gsymbol) != NULL)
- return symbol_get_demangled_name (gsymbol);
- else
- return ada_decode_symbol (gsymbol);
+ dem_name = ada_decode_symbol (gsymbol);
break;
default:
break;
}
- return NULL;
+ return dem_name;
}
/* Return the search name of a symbol---generally the demangled or
linkage name of the symbol, depending on how it will be searched for.
If there is no distinct demangled name, then returns the same value
(same pointer) as SYMBOL_LINKAGE_NAME. */
-char *
+
+const char *
symbol_search_name (const struct general_symbol_info *gsymbol)
{
if (gsymbol->language == language_ada)
}
/* Initialize the structure fields to zero values. */
+
void
init_sal (struct symtab_and_line *sal)
{
sal->end = 0;
sal->explicit_pc = 0;
sal->explicit_line = 0;
+ sal->probe = NULL;
}
\f
/* If we know that this is not a text address, return failure. This is
necessary because we loop based on texthigh and textlow, which do
not include the data ranges. */
- msymbol = lookup_minimal_symbol_by_pc_section (pc, section);
+ msymbol = lookup_minimal_symbol_by_pc_section (pc, section).minsym;
if (msymbol
&& (MSYMBOL_TYPE (msymbol) == mst_data
|| MSYMBOL_TYPE (msymbol) == mst_bss
point to the actual function code. */
msym = lookup_minimal_symbol_by_pc_name (addr, ginfo->name, objfile);
if (msym)
- {
- ginfo->obj_section = SYMBOL_OBJ_SECTION (msym);
- ginfo->section = SYMBOL_SECTION (msym);
- }
+ ginfo->section = SYMBOL_SECTION (msym);
else
{
/* Static, function-local variables do appear in the linker
a search of the section table. */
struct obj_section *s;
+ int fallback = -1;
ALL_OBJFILE_OSECTIONS (objfile, s)
{
- int idx = s->the_bfd_section->index;
+ int idx = s - objfile->sections;
CORE_ADDR offset = ANOFFSET (objfile->section_offsets, idx);
+ if (fallback == -1)
+ fallback = idx;
+
if (obj_section_addr (s) - offset <= addr
&& addr < obj_section_endaddr (s) - offset)
{
- ginfo->obj_section = s;
ginfo->section = idx;
return;
}
}
+
+ /* If we didn't find the section, assume it is in the first
+ section. If there is no allocated section, then it hardly
+ matters what we pick, so just pick zero. */
+ if (fallback == -1)
+ ginfo->section = 0;
+ else
+ ginfo->section = fallback;
}
}
if (!sym)
return NULL;
- if (SYMBOL_OBJ_SECTION (sym))
- return sym;
-
/* We either have an OBJFILE, or we can get at it from the sym's
symtab. Anything else is a bug. */
gdb_assert (objfile || SYMBOL_SYMTAB (sym));
if (objfile == NULL)
objfile = SYMBOL_SYMTAB (sym)->objfile;
+ if (SYMBOL_OBJ_SECTION (objfile, sym))
+ return sym;
+
/* We should have an objfile by now. */
gdb_assert (objfile);
return sym;
}
-/* Find the definition for a specified symbol name NAME
- in domain DOMAIN, visible from lexical block BLOCK.
- Returns the struct symbol pointer, or zero if no symbol is found.
- C++: if IS_A_FIELD_OF_THIS is nonzero on entry, check to see if
- NAME is a field of the current implied argument `this'. If so set
- *IS_A_FIELD_OF_THIS to 1, otherwise set it to zero.
- BLOCK_FOUND is set to the block in which NAME is found (in the case of
- a field of `this', value_of_this sets BLOCK_FOUND to the proper value.) */
-
-/* This function has a bunch of loops in it and it would seem to be
- attractive to put in some QUIT's (though I'm not really sure
- whether it can run long enough to be really important). But there
- are a few calls for which it would appear to be bad news to quit
- out of here: find_proc_desc in alpha-tdep.c and mips-tdep.c. (Note
- that there is C++ code below which can error(), but that probably
- doesn't affect these calls since they are looking for a known
- variable and thus can probably assume it will never hit the C++
- code). */
+/* 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.
+
+ For Ada, this function just sets *RESULT_NAME to 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.
+ Unfortunately, we cannot do this, because this function is used in
+ circumstances where it is not appropriate to try to encode NAME.
+ For instance, when displaying the frame info, we demangle the name
+ of each parameter, and then perform a symbol lookup inside our
+ function using that demangled name. In Ada, certain functions
+ have internally-generated parameters whose name contain uppercase
+ characters. Encoding those name would result in those uppercase
+ characters to become lowercase, and thus cause the symbol lookup
+ to fail. */
-struct symbol *
-lookup_symbol_in_language (const char *name, const struct block *block,
- const domain_enum domain, enum language lang,
- int *is_a_field_of_this)
+struct cleanup *
+demangle_for_lookup (const char *name, enum language lang,
+ const char **result_name)
{
char *demangled_name = NULL;
const char *modified_name = NULL;
- struct symbol *returnval;
struct cleanup *cleanup = make_cleanup (null_cleanup, 0);
modified_name = name;
- /* If we are using C++, D, or Java, demangle the name before doing a
+ /* If we are using C++, D, Go, or Java, demangle the name before doing a
lookup, so we can always binary search. */
if (lang == language_cplus)
{
- demangled_name = cplus_demangle (name, DMGL_ANSI | DMGL_PARAMS);
+ demangled_name = gdb_demangle (name, DMGL_ANSI | DMGL_PARAMS);
if (demangled_name)
{
modified_name = demangled_name;
}
else if (lang == language_java)
{
- demangled_name = cplus_demangle (name,
- DMGL_ANSI | DMGL_PARAMS | DMGL_JAVA);
+ demangled_name = gdb_demangle (name,
+ DMGL_ANSI | DMGL_PARAMS | DMGL_JAVA);
if (demangled_name)
{
modified_name = demangled_name;
make_cleanup (xfree, 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);
+ }
+ }
+
+ *result_name = modified_name;
+ return cleanup;
+}
+
+/* Find the definition for a specified symbol name NAME
+ in domain DOMAIN, visible from lexical block BLOCK.
+ Returns the struct symbol pointer, or zero if no symbol is found.
+ C++: if IS_A_FIELD_OF_THIS is nonzero on entry, check to see if
+ NAME is a field of the current implied argument `this'. If so set
+ *IS_A_FIELD_OF_THIS to 1, otherwise set it to zero.
+ BLOCK_FOUND is set to the block in which NAME is found (in the case of
+ a field of `this', value_of_this sets BLOCK_FOUND to the proper value.) */
+
+/* This function (or rather its subordinates) have a bunch of loops and
+ it would seem to be attractive to put in some QUIT's (though I'm not really
+ sure whether it can run long enough to be really important). But there
+ are a few calls for which it would appear to be bad news to quit
+ out of here: e.g., find_proc_desc in alpha-mdebug-tdep.c. (Note
+ that there is C++ code below which can error(), but that probably
+ doesn't affect these calls since they are looking for a known
+ variable and thus can probably assume it will never hit the C++
+ code). */
+
+struct 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);
struct symbol *
lookup_symbol (const char *name, const struct block *block,
- domain_enum domain, int *is_a_field_of_this)
+ domain_enum domain,
+ struct field_of_this_result *is_a_field_of_this)
{
return lookup_symbol_in_language (name, block, domain,
current_language->la_language,
is_a_field_of_this);
}
+/* Look up the `this' symbol for LANG in BLOCK. Return the symbol if
+ found, or NULL if not found. */
+
+struct symbol *
+lookup_language_this (const struct language_defn *lang,
+ const struct block *block)
+{
+ if (lang->la_name_of_this == NULL || block == NULL)
+ return NULL;
+
+ while (block)
+ {
+ struct symbol *sym;
+
+ sym = lookup_block_symbol (block, lang->la_name_of_this, VAR_DOMAIN);
+ if (sym != NULL)
+ {
+ block_found = block;
+ return sym;
+ }
+ if (BLOCK_FUNCTION (block))
+ break;
+ block = BLOCK_SUPERBLOCK (block);
+ }
+
+ return NULL;
+}
+
+/* Given TYPE, a structure/union,
+ return 1 if the component named NAME from the ultimate target
+ structure/union is defined, otherwise, return 0. */
+
+static int
+check_field (struct type *type, const char *name,
+ struct field_of_this_result *is_a_field_of_this)
+{
+ int i;
+
+ /* The type may be a stub. */
+ CHECK_TYPEDEF (type);
+
+ for (i = TYPE_NFIELDS (type) - 1; i >= TYPE_N_BASECLASSES (type); i--)
+ {
+ const char *t_field_name = TYPE_FIELD_NAME (type, i);
+
+ if (t_field_name && (strcmp_iw (t_field_name, name) == 0))
+ {
+ is_a_field_of_this->type = type;
+ is_a_field_of_this->field = &TYPE_FIELD (type, i);
+ return 1;
+ }
+ }
+
+ /* C++: If it was not found as a data field, then try to return it
+ as a pointer to a method. */
+
+ for (i = TYPE_NFN_FIELDS (type) - 1; i >= 0; --i)
+ {
+ if (strcmp_iw (TYPE_FN_FIELDLIST_NAME (type, i), name) == 0)
+ {
+ is_a_field_of_this->type = type;
+ is_a_field_of_this->fn_field = &TYPE_FN_FIELDLIST (type, i);
+ return 1;
+ }
+ }
+
+ for (i = TYPE_N_BASECLASSES (type) - 1; i >= 0; i--)
+ if (check_field (TYPE_BASECLASS (type, i), name, is_a_field_of_this))
+ return 1;
+
+ return 0;
+}
+
/* Behave like lookup_symbol except that NAME is the natural name
- of the symbol that we're looking for and, if LINKAGE_NAME is
- non-NULL, ensure that the symbol's linkage name matches as
- well. */
+ (e.g., demangled name) of the symbol that we're looking for. */
static struct symbol *
lookup_symbol_aux (const char *name, const struct block *block,
const domain_enum domain, enum language language,
- int *is_a_field_of_this)
+ struct field_of_this_result *is_a_field_of_this)
{
struct symbol *sym;
const struct language_defn *langdef;
/* 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 and expect it to be either 0 or 1.
- If we don't set it, the contents of is_a_field_of_this are
- undefined. */
+ certainly use it later. If we don't set it, the contents of
+ is_a_field_of_this are undefined. */
if (is_a_field_of_this != NULL)
- *is_a_field_of_this = 0;
+ memset (is_a_field_of_this, 0, sizeof (*is_a_field_of_this));
/* Search specified block and its superiors. Don't search
STATIC_BLOCK or GLOBAL_BLOCK. */
langdef = language_def (language);
- if (langdef->la_name_of_this != NULL && is_a_field_of_this != NULL
- && block != NULL)
+ /* Don't do this check if we are searching for a struct. It will
+ not be found by check_field, but will be found by other
+ means. */
+ if (is_a_field_of_this != NULL && domain != STRUCT_DOMAIN)
{
- struct symbol *sym = NULL;
- const struct block *function_block = block;
+ struct symbol *sym = lookup_language_this (langdef, block);
- /* 'this' is only defined in the function's block, so find the
- enclosing function block. */
- for (; function_block && !BLOCK_FUNCTION (function_block);
- function_block = BLOCK_SUPERBLOCK (function_block));
-
- if (function_block && !dict_empty (BLOCK_DICT (function_block)))
- sym = lookup_block_symbol (function_block, langdef->la_name_of_this,
- VAR_DOMAIN);
if (sym)
{
struct type *t = sym->type;
error (_("Internal error: `%s' is not an aggregate"),
langdef->la_name_of_this);
- if (check_field (t, name))
- {
- *is_a_field_of_this = 1;
- return NULL;
- }
+ if (check_field (t, name, is_a_field_of_this))
+ return NULL;
}
}
objfile = objfile_separate_debug_iterate (main_objfile, objfile))
{
/* Go through symtabs. */
- ALL_OBJFILE_SYMTABS (objfile, s)
- {
- bv = BLOCKVECTOR (s);
- block = BLOCKVECTOR_BLOCK (bv, GLOBAL_BLOCK);
- sym = lookup_block_symbol (block, name, domain);
- if (sym)
- {
- block_found = block;
- return fixup_symbol_section (sym, (struct objfile *)objfile);
- }
- }
+ ALL_OBJFILE_PRIMARY_SYMTABS (objfile, s)
+ {
+ bv = BLOCKVECTOR (s);
+ block = BLOCKVECTOR_BLOCK (bv, GLOBAL_BLOCK);
+ sym = lookup_block_symbol (block, name, domain);
+ if (sym)
+ {
+ block_found = block;
+ return fixup_symbol_section (sym, (struct objfile *)objfile);
+ }
+ }
sym = lookup_symbol_aux_quick ((struct objfile *) objfile, GLOBAL_BLOCK,
name, domain);
return NULL;
}
-/* Check to see if the symbol is defined in one of the symtabs.
- BLOCK_INDEX should be either GLOBAL_BLOCK or STATIC_BLOCK,
+/* Check to see if the symbol is defined in one of the OBJFILE's
+ symtabs. BLOCK_INDEX should be either GLOBAL_BLOCK or STATIC_BLOCK,
depending on whether or not we want to search global symbols or
static symbols. */
+static struct symbol *
+lookup_symbol_aux_objfile (struct objfile *objfile, int block_index,
+ const char *name, const domain_enum domain)
+{
+ struct symbol *sym = NULL;
+ struct blockvector *bv;
+ const struct block *block;
+ struct symtab *s;
+
+ ALL_OBJFILE_PRIMARY_SYMTABS (objfile, s)
+ {
+ bv = BLOCKVECTOR (s);
+ block = BLOCKVECTOR_BLOCK (bv, block_index);
+ sym = lookup_block_symbol (block, name, domain);
+ if (sym)
+ {
+ block_found = block;
+ return fixup_symbol_section (sym, objfile);
+ }
+ }
+
+ return NULL;
+}
+
+/* Same as lookup_symbol_aux_objfile, except that it searches all
+ objfiles. Return the first match found. */
+
static struct symbol *
lookup_symbol_aux_symtabs (int block_index, const char *name,
const domain_enum domain)
{
struct symbol *sym;
struct objfile *objfile;
- struct blockvector *bv;
- const struct block *block;
- struct symtab *s;
ALL_OBJFILES (objfile)
{
- if (objfile->sf)
- objfile->sf->qf->pre_expand_symtabs_matching (objfile,
- block_index,
- name, domain);
+ sym = lookup_symbol_aux_objfile (objfile, block_index, name, domain);
+ if (sym)
+ return sym;
+ }
+
+ return NULL;
+}
+
+/* Wrapper around lookup_symbol_aux_objfile for search_symbols.
+ Look up LINKAGE_NAME in DOMAIN in the global and static blocks of OBJFILE
+ and all related objfiles. */
+
+static struct symbol *
+lookup_symbol_in_objfile_from_linkage_name (struct objfile *objfile,
+ const char *linkage_name,
+ domain_enum domain)
+{
+ enum language lang = current_language->la_language;
+ const char *modified_name;
+ struct cleanup *cleanup = demangle_for_lookup (linkage_name, lang,
+ &modified_name);
+ struct objfile *main_objfile, *cur_objfile;
+
+ if (objfile->separate_debug_objfile_backlink)
+ main_objfile = objfile->separate_debug_objfile_backlink;
+ else
+ main_objfile = objfile;
+
+ for (cur_objfile = main_objfile;
+ cur_objfile;
+ cur_objfile = objfile_separate_debug_iterate (main_objfile, cur_objfile))
+ {
+ struct symbol *sym;
- ALL_OBJFILE_SYMTABS (objfile, s)
- if (s->primary)
+ sym = lookup_symbol_aux_objfile (cur_objfile, GLOBAL_BLOCK,
+ modified_name, domain);
+ if (sym == NULL)
+ sym = lookup_symbol_aux_objfile (cur_objfile, STATIC_BLOCK,
+ modified_name, domain);
+ if (sym != NULL)
{
- bv = BLOCKVECTOR (s);
- block = BLOCKVECTOR_BLOCK (bv, block_index);
- sym = lookup_block_symbol (block, name, domain);
- if (sym)
- {
- block_found = block;
- return fixup_symbol_section (sym, objfile);
- }
+ do_cleanups (cleanup);
+ return sym;
}
- }
+ }
+ do_cleanups (cleanup);
return NULL;
}
+/* A helper function that throws an exception when a symbol was found
+ in a psymtab but not in a symtab. */
+
+static void ATTRIBUTE_NORETURN
+error_in_psymtab_expansion (int kind, const char *name, struct symtab *symtab)
+{
+ error (_("\
+Internal: %s symbol `%s' found in %s psymtab but not in symtab.\n\
+%s may be an inlined function, or may be a template function\n \
+(if a template, try specifying an instantiation: %s<type>)."),
+ kind == GLOBAL_BLOCK ? "global" : "static",
+ name, symtab_to_filename_for_display (symtab), name, name);
+}
+
/* A helper function for lookup_symbol_aux that interfaces with the
"quick" symbol table functions. */
block = BLOCKVECTOR_BLOCK (bv, kind);
sym = lookup_block_symbol (block, name, domain);
if (!sym)
- {
- /* This shouldn't be necessary, but as a last resort try
- looking in the statics even though the psymtab claimed
- the symbol was global, or vice-versa. It's possible
- that the psymtab gets it wrong in some cases. */
-
- /* FIXME: carlton/2002-09-30: Should we really do that?
- If that happens, isn't it likely to be a GDB error, in
- which case we should fix the GDB error rather than
- silently dealing with it here? So I'd vote for
- removing the check for the symbol in the other
- block. */
- block = BLOCKVECTOR_BLOCK (bv,
- kind == GLOBAL_BLOCK ?
- STATIC_BLOCK : GLOBAL_BLOCK);
- sym = lookup_block_symbol (block, name, domain);
- if (!sym)
- error (_("\
-Internal: %s symbol `%s' found in %s psymtab but not in symtab.\n\
-%s may be an inlined function, or may be a template function\n\
-(if a template, try specifying an instantiation: %s<type>)."),
- kind == GLOBAL_BLOCK ? "global" : "static",
- name, symtab->filename, name, name);
- }
+ error_in_psymtab_expansion (kind, name, symtab);
return fixup_symbol_section (sym, objfile);
}
return NULL;
}
+/* Private data to be used with lookup_symbol_global_iterator_cb. */
+
+struct global_sym_lookup_data
+{
+ /* The name of the symbol we are searching for. */
+ const char *name;
+
+ /* The domain to use for our search. */
+ 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;
+};
+
+/* A callback function for gdbarch_iterate_over_objfiles_in_search_order.
+ It searches by name for a symbol in the GLOBAL_BLOCK of the given
+ OBJFILE. The arguments for the search are passed via CB_DATA,
+ which in reality is a pointer to struct global_sym_lookup_data. */
+
+static int
+lookup_symbol_global_iterator_cb (struct objfile *objfile,
+ void *cb_data)
+{
+ struct global_sym_lookup_data *data =
+ (struct global_sym_lookup_data *) cb_data;
+
+ gdb_assert (data->result == NULL);
+
+ data->result = lookup_symbol_aux_objfile (objfile, GLOBAL_BLOCK,
+ data->name, data->domain);
+ if (data->result == NULL)
+ data->result = lookup_symbol_aux_quick (objfile, GLOBAL_BLOCK,
+ data->name, data->domain);
+
+ /* If we found a match, tell the iterator to stop. Otherwise,
+ keep going. */
+ return (data->result != NULL);
+}
+
/* Lookup a symbol in all files' global blocks (searching psymtabs if
necessary). */
{
struct symbol *sym = NULL;
struct objfile *objfile = NULL;
+ struct global_sym_lookup_data lookup_data;
/* Call library-specific lookup procedure. */
objfile = lookup_objfile_from_block (block);
if (sym != NULL)
return sym;
- sym = lookup_symbol_aux_symtabs (GLOBAL_BLOCK, name, domain);
- if (sym != NULL)
- return sym;
+ memset (&lookup_data, 0, sizeof (lookup_data));
+ lookup_data.name = name;
+ lookup_data.domain = domain;
+ gdbarch_iterate_over_objfiles_in_search_order
+ (objfile != NULL ? get_objfile_arch (objfile) : target_gdbarch (),
+ lookup_symbol_global_iterator_cb, &lookup_data, objfile);
- ALL_OBJFILES (objfile)
- {
- sym = lookup_symbol_aux_quick (objfile, GLOBAL_BLOCK, name, domain);
- if (sym)
- return sym;
- }
-
- return NULL;
+ return lookup_data.result;
}
int
block = BLOCKVECTOR_BLOCK (bv, kind);
sym = lookup_block_symbol (block, name, STRUCT_DOMAIN);
if (!sym)
- {
- int other_kind = kind == GLOBAL_BLOCK ? STATIC_BLOCK : GLOBAL_BLOCK;
-
- /* This shouldn't be necessary, but as a last resort
- * try looking in the 'other kind' even though the psymtab
- * claimed the symbol was one thing. It's possible that
- * the psymtab gets it wrong in some cases.
- */
- block = BLOCKVECTOR_BLOCK (bv, other_kind);
- sym = lookup_block_symbol (block, name, STRUCT_DOMAIN);
- if (!sym)
- /* FIXME; error is wrong in one case. */
- error (_("\
-Internal: global symbol `%s' found in %s psymtab but not in symtab.\n\
-%s may be an inlined function, or may be a template function\n\
-(if a template, try specifying an instantiation: %s<type>)."),
- name, symtab->filename, name, name);
- }
+ error_in_psymtab_expansion (kind, name, symtab);
+
if (!TYPE_IS_OPAQUE (SYMBOL_TYPE (sym)))
return SYMBOL_TYPE (sym);
ALL_OBJFILES (objfile)
{
- if (objfile->sf)
- objfile->sf->qf->pre_expand_symtabs_matching (objfile,
- GLOBAL_BLOCK,
- name, STRUCT_DOMAIN);
-
- ALL_OBJFILE_SYMTABS (objfile, s)
- if (s->primary)
- {
- bv = BLOCKVECTOR (s);
- block = BLOCKVECTOR_BLOCK (bv, GLOBAL_BLOCK);
- sym = lookup_block_symbol (block, name, STRUCT_DOMAIN);
- if (sym && !TYPE_IS_OPAQUE (SYMBOL_TYPE (sym)))
- {
- return SYMBOL_TYPE (sym);
- }
- }
+ ALL_OBJFILE_PRIMARY_SYMTABS (objfile, s)
+ {
+ bv = BLOCKVECTOR (s);
+ block = BLOCKVECTOR_BLOCK (bv, GLOBAL_BLOCK);
+ sym = lookup_block_symbol (block, name, STRUCT_DOMAIN);
+ if (sym && !TYPE_IS_OPAQUE (SYMBOL_TYPE (sym)))
+ {
+ return SYMBOL_TYPE (sym);
+ }
+ }
}
ALL_OBJFILES (objfile)
ALL_OBJFILES (objfile)
{
- if (objfile->sf)
- objfile->sf->qf->pre_expand_symtabs_matching (objfile, STATIC_BLOCK,
- name, STRUCT_DOMAIN);
-
- ALL_OBJFILE_SYMTABS (objfile, s)
+ ALL_OBJFILE_PRIMARY_SYMTABS (objfile, s)
{
bv = BLOCKVECTOR (s);
block = BLOCKVECTOR_BLOCK (bv, STATIC_BLOCK);
return (struct type *) 0;
}
-
/* Find the name of the file containing main(). */
/* FIXME: What about languages without main() or specially linked
executables that have no main() ? */
lookup_block_symbol (const struct block *block, const char *name,
const domain_enum domain)
{
- struct dict_iterator iter;
+ struct block_iterator iter;
struct symbol *sym;
if (!BLOCK_FUNCTION (block))
{
- for (sym = dict_iter_name_first (BLOCK_DICT (block), name, &iter);
+ for (sym = block_iter_name_first (block, name, &iter);
sym != NULL;
- sym = dict_iter_name_next (name, &iter))
+ sym = block_iter_name_next (name, &iter))
{
if (symbol_matches_domain (SYMBOL_LANGUAGE (sym),
SYMBOL_DOMAIN (sym), domain))
struct symbol *sym_found = NULL;
- for (sym = dict_iter_name_first (BLOCK_DICT (block), name, &iter);
+ for (sym = block_iter_name_first (block, name, &iter);
sym != NULL;
- sym = dict_iter_name_next (name, &iter))
+ sym = block_iter_name_next (name, &iter))
{
if (symbol_matches_domain (SYMBOL_LANGUAGE (sym),
SYMBOL_DOMAIN (sym), domain))
}
}
+/* 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
+ search continues. */
+
+void
+iterate_over_symbols (const struct block *block, const char *name,
+ const domain_enum domain,
+ symbol_found_callback_ftype *callback,
+ void *data)
+{
+ struct block_iterator iter;
+ struct symbol *sym;
+
+ for (sym = block_iter_name_first (block, name, &iter);
+ sym != NULL;
+ sym = block_iter_name_next (name, &iter))
+ {
+ if (symbol_matches_domain (SYMBOL_LANGUAGE (sym),
+ SYMBOL_DOMAIN (sym), domain))
+ {
+ if (!callback (sym, data))
+ return;
+ }
+ }
+}
+
/* Find the symtab associated with PC and SECTION. Look through the
psymtabs and read in another symtab if necessary. */
struct symtab *s = NULL;
struct symtab *best_s = NULL;
struct objfile *objfile;
- struct program_space *pspace;
CORE_ADDR distance = 0;
struct minimal_symbol *msymbol;
- pspace = current_program_space;
-
/* If we know that this is not a text address, return failure. This is
necessary because we loop based on the block's high and low code
addresses, which do not include the data ranges, and because
we call find_pc_sect_psymtab which has a similar restriction based
on the partial_symtab's texthigh and textlow. */
- msymbol = lookup_minimal_symbol_by_pc_section (pc, section);
+ msymbol = lookup_minimal_symbol_by_pc_section (pc, section).minsym;
if (msymbol
&& (MSYMBOL_TYPE (msymbol) == mst_data
|| MSYMBOL_TYPE (msymbol) == mst_bss
}
if (section != 0)
{
- struct dict_iterator iter;
+ struct block_iterator iter;
struct symbol *sym = NULL;
ALL_BLOCK_SYMBOLS (b, iter, sym)
{
fixup_symbol_section (sym, objfile);
- if (matching_obj_sections (SYMBOL_OBJ_SECTION (sym), section))
+ if (matching_obj_sections (SYMBOL_OBJ_SECTION (objfile, sym),
+ section))
break;
}
if (sym == NULL)
if (best_s != NULL)
return (best_s);
+ /* Not found in symtabs, search the "quick" symtabs (e.g. psymtabs). */
+
ALL_OBJFILES (objfile)
{
struct symtab *result;
struct linetable_entry *item;
struct symtab_and_line val;
struct blockvector *bv;
- struct minimal_symbol *msymbol;
+ struct bound_minimal_symbol msymbol;
struct minimal_symbol *mfunsym;
struct objfile *objfile;
we will use a line one less than this,
with a range from the start of that file to the first line's pc. */
struct linetable_entry *alt = NULL;
- struct symtab *alt_symtab = 0;
/* Info on best line seen in this file. */
* infinite recursion.
*/
msymbol = lookup_minimal_symbol_by_pc (pc);
- if (msymbol != NULL)
- if (MSYMBOL_TYPE (msymbol) == mst_solib_trampoline)
+ if (msymbol.minsym != NULL)
+ if (MSYMBOL_TYPE (msymbol.minsym) == mst_solib_trampoline)
{
- mfunsym = lookup_minimal_symbol_text (SYMBOL_LINKAGE_NAME (msymbol),
- NULL);
+ mfunsym
+ = lookup_minimal_symbol_text (SYMBOL_LINKAGE_NAME (msymbol.minsym),
+ NULL);
if (mfunsym == NULL)
/* I eliminated this warning since it is coming out
* in the following situation:
;
/* fall through */
else if (SYMBOL_VALUE_ADDRESS (mfunsym)
- == SYMBOL_VALUE_ADDRESS (msymbol))
+ == SYMBOL_VALUE_ADDRESS (msymbol.minsym))
/* Avoid infinite recursion */
/* See above comment about why warning is commented out. */
/* warning ("In stub for %s; unable to find real function/line info",
/* Is this file's first line closer than the first lines of other files?
If so, record this file, and its first line, as best alternate. */
if (item->pc > pc && (!alt || item->pc < alt->pc))
- {
- alt = item;
- alt_symtab = s;
- }
+ alt = item;
for (i = 0; i < len; i++, item++)
{
/* First try looking it up in the given symtab. */
best_linetable = LINETABLE (symtab);
best_symtab = symtab;
- best_index = find_line_common (best_linetable, line, &exact);
+ best_index = find_line_common (best_linetable, line, &exact, 0);
if (best_index < 0 || !exact)
{
/* Didn't find an exact match. So we better keep looking for
ALL_OBJFILES (objfile)
{
if (objfile->sf)
- objfile->sf->qf->expand_symtabs_with_filename (objfile,
- symtab->filename);
+ objfile->sf->qf->expand_symtabs_with_fullname (objfile,
+ symtab_to_fullname (symtab));
}
- /* Get symbol full file name if possible. */
- symtab_to_fullname (symtab);
-
ALL_SYMTABS (objfile, s)
{
struct linetable *l;
if (FILENAME_CMP (symtab->filename, s->filename) != 0)
continue;
- if (symtab->fullname != NULL
- && symtab_to_fullname (s) != NULL
- && FILENAME_CMP (symtab->fullname, s->fullname) != 0)
+ if (FILENAME_CMP (symtab_to_fullname (symtab),
+ symtab_to_fullname (s)) != 0)
continue;
l = LINETABLE (s);
- ind = find_line_common (l, line, &exact);
+ ind = find_line_common (l, line, &exact, 0);
if (ind >= 0)
{
if (exact)
return best_symtab;
}
+
+/* Given SYMTAB, returns all the PCs function in the symtab that
+ exactly match LINE. Returns NULL if there are no exact matches,
+ but updates BEST_ITEM in this case. */
+
+VEC (CORE_ADDR) *
+find_pcs_for_symtab_line (struct symtab *symtab, int line,
+ struct linetable_entry **best_item)
+{
+ int start = 0;
+ VEC (CORE_ADDR) *result = NULL;
+
+ /* First, collect all the PCs that are at this line. */
+ while (1)
+ {
+ int was_exact;
+ int idx;
+
+ idx = find_line_common (LINETABLE (symtab), line, &was_exact, start);
+ if (idx < 0)
+ break;
+
+ if (!was_exact)
+ {
+ struct linetable_entry *item = &LINETABLE (symtab)->item[idx];
+
+ if (*best_item == NULL || item->line < (*best_item)->line)
+ *best_item = item;
+
+ break;
+ }
+
+ VEC_safe_push (CORE_ADDR, result, LINETABLE (symtab)->item[idx].pc);
+ start = idx + 1;
+ }
+
+ return result;
+}
+
\f
/* Set the PC value for a given source file and line number and return true.
Returns zero for invalid line number (and sets the PC to 0).
/* Given a line table and a line number, return the index into the line
table for the pc of the nearest line whose number is >= the specified one.
Return -1 if none is found. The value is >= 0 if it is an index.
+ START is the index at which to start searching the line table.
Set *EXACT_MATCH nonzero if the value returned is an exact match. */
static int
find_line_common (struct linetable *l, int lineno,
- int *exact_match)
+ int *exact_match, int start)
{
int i;
int len;
return -1;
len = l->nitems;
- for (i = 0; i < len; i++)
+ for (i = start; i < len; i++)
{
struct linetable_entry *item = &(l->item[i]);
address for that function that has an entry in SYMTAB's line info
table. If such an entry cannot be found, return FUNC_ADDR
unaltered. */
-CORE_ADDR
+
+static CORE_ADDR
skip_prologue_using_lineinfo (CORE_ADDR func_addr, struct symtab *symtab)
{
CORE_ADDR func_start, func_end;
fixup_symbol_section (sym, NULL);
sal = find_pc_sect_line (BLOCK_START (SYMBOL_BLOCK_VALUE (sym)),
- SYMBOL_OBJ_SECTION (sym), 0);
+ SYMBOL_OBJ_SECTION (SYMBOL_OBJFILE (sym), sym), 0);
/* We always should have a line for the function start address.
If we don't, something is odd. Create a plain SAL refering
init_sal (&sal);
sal.pspace = current_program_space;
sal.pc = BLOCK_START (SYMBOL_BLOCK_VALUE (sym));
- sal.section = SYMBOL_OBJ_SECTION (sym);
+ sal.section = SYMBOL_OBJ_SECTION (SYMBOL_OBJFILE (sym), sym);
}
if (funfirstline)
If the PC was explicitly specified, the SAL is not changed.
If the line number was explicitly specified, at most the SAL's PC
is updated. If SAL is already past the prologue, then do nothing. */
+
void
skip_prologue_sal (struct symtab_and_line *sal)
{
struct block *b, *function_block;
int force_skip, skip;
- /* Do not change the SAL is PC was specified explicitly. */
+ /* Do not change the SAL if PC was specified explicitly. */
if (sal->explicit_pc)
return;
fixup_symbol_section (sym, NULL);
pc = BLOCK_START (SYMBOL_BLOCK_VALUE (sym));
- section = SYMBOL_OBJ_SECTION (sym);
+ section = SYMBOL_OBJ_SECTION (SYMBOL_OBJFILE (sym), sym);
name = SYMBOL_LINKAGE_NAME (sym);
objfile = SYMBOL_SYMTAB (sym)->objfile;
}
else
{
struct minimal_symbol *msymbol
- = lookup_minimal_symbol_by_pc_section (sal->pc, sal->section);
+ = lookup_minimal_symbol_by_pc_section (sal->pc, sal->section).minsym;
if (msymbol == NULL)
{
return;
}
+ objfile = msymbol_objfile (msymbol);
pc = SYMBOL_VALUE_ADDRESS (msymbol);
- section = SYMBOL_OBJ_SECTION (msymbol);
+ section = SYMBOL_OBJ_SECTION (objfile, msymbol);
name = SYMBOL_LINKAGE_NAME (msymbol);
- objfile = msymbol_objfile (msymbol);
}
gdbarch = get_objfile_arch (objfile);
/* Check if gdbarch_skip_prologue left us in mid-line, and the next
line is still part of the same function. */
if (skip && start_sal.pc != pc
- && (sym? (BLOCK_START (SYMBOL_BLOCK_VALUE (sym)) <= start_sal.end
- && start_sal.end < BLOCK_END (SYMBOL_BLOCK_VALUE (sym)))
- : (lookup_minimal_symbol_by_pc_section (start_sal.end, section)
- == lookup_minimal_symbol_by_pc_section (pc, section))))
+ && (sym ? (BLOCK_START (SYMBOL_BLOCK_VALUE (sym)) <= start_sal.end
+ && start_sal.end < BLOCK_END (SYMBOL_BLOCK_VALUE (sym)))
+ : (lookup_minimal_symbol_by_pc_section (start_sal.end, section).minsym
+ == lookup_minimal_symbol_by_pc_section (pc, section).minsym)))
{
/* First pc of next line */
pc = start_sal.end;
to `__main' in `main' between the prologue and before user
code. */
if (gdbarch_skip_main_prologue_p (gdbarch)
- && name && strcmp (name, "main") == 0)
+ && name && strcmp_iw (name, "main") == 0)
{
pc = gdbarch_skip_main_prologue (gdbarch, pc);
/* Recalculate the line number (might not be N+1). */
some legitimate operator text, return a pointer to the
beginning of the substring of the operator text.
Otherwise, return "". */
-char *
+
+static char *
operator_chars (char *p, char **end)
{
*end = "";
break;
}
- *end = "";
- return *end;
+ *end = "";
+ return *end;
+}
+\f
+
+/* Cache to watch for file names already seen by filename_seen. */
+
+struct filename_seen_cache
+{
+ /* Table of files seen so far. */
+ htab_t tab;
+ /* Initial size of the table. It automagically grows from here. */
+#define INITIAL_FILENAME_SEEN_CACHE_SIZE 100
+};
+
+/* filename_seen_cache constructor. */
+
+static struct filename_seen_cache *
+create_filename_seen_cache (void)
+{
+ struct filename_seen_cache *cache;
+
+ cache = XNEW (struct filename_seen_cache);
+ cache->tab = htab_create_alloc (INITIAL_FILENAME_SEEN_CACHE_SIZE,
+ filename_hash, filename_eq,
+ NULL, xcalloc, xfree);
+
+ return cache;
+}
+
+/* Empty the cache, but do not delete it. */
+
+static void
+clear_filename_seen_cache (struct filename_seen_cache *cache)
+{
+ htab_empty (cache->tab);
}
-\f
-/* If FILE is not already in the table of files, return zero;
+/* filename_seen_cache destructor.
+ This takes a void * argument as it is generally used as a cleanup. */
+
+static void
+delete_filename_seen_cache (void *ptr)
+{
+ struct filename_seen_cache *cache = ptr;
+
+ htab_delete (cache->tab);
+ xfree (cache);
+}
+
+/* If FILE is not already in the table of files in CACHE, return zero;
otherwise return non-zero. Optionally add FILE to the table if ADD
- is non-zero. If *FIRST is non-zero, forget the old table
- contents. */
+ is non-zero.
+
+ NOTE: We don't manage space for FILE, we assume FILE lives as long
+ as the caller needs. */
+
static int
-filename_seen (const char *file, int add, int *first)
+filename_seen (struct filename_seen_cache *cache, const char *file, int add)
{
- /* Table of files seen so far. */
- static const char **tab = NULL;
- /* Allocated size of tab in elements.
- Start with one 256-byte block (when using GNU malloc.c).
- 24 is the malloc overhead when range checking is in effect. */
- static int tab_alloc_size = (256 - 24) / sizeof (char *);
- /* Current size of tab in elements. */
- static int tab_cur_size;
- const char **p;
-
- if (*first)
- {
- if (tab == NULL)
- tab = (const char **) xmalloc (tab_alloc_size * sizeof (*tab));
- tab_cur_size = 0;
- }
+ void **slot;
/* Is FILE in tab? */
- for (p = tab; p < tab + tab_cur_size; p++)
- if (filename_cmp (*p, file) == 0)
- return 1;
+ slot = htab_find_slot (cache->tab, file, add ? INSERT : NO_INSERT);
+ if (*slot != NULL)
+ return 1;
/* No; maybe add it to tab. */
if (add)
- {
- if (tab_cur_size == tab_alloc_size)
- {
- tab_alloc_size *= 2;
- tab = (const char **) xrealloc ((char *) tab,
- tab_alloc_size * sizeof (*tab));
- }
- tab[tab_cur_size++] = file;
- }
+ *slot = (char *) file;
return 0;
}
+/* Data structure to maintain printing state for output_source_filename. */
+
+struct output_source_filename_data
+{
+ /* Cache of what we've seen so far. */
+ struct filename_seen_cache *filename_seen_cache;
+
+ /* Flag of whether we're printing the first one. */
+ int first;
+};
+
/* Slave routine for sources_info. Force line breaks at ,'s.
- NAME is the name to print and *FIRST is nonzero if this is the first
- name printed. Set *FIRST to zero. */
+ NAME is the name to print.
+ DATA contains the state for printing and watching for duplicates. */
+
static void
-output_source_filename (const char *name, int *first)
+output_source_filename (const char *name,
+ struct output_source_filename_data *data)
{
/* Since a single source file can result in several partial symbol
tables, we need to avoid printing it more than once. Note: if
symtabs; it doesn't hurt to check. */
/* Was NAME already seen? */
- if (filename_seen (name, 1, first))
+ if (filename_seen (data->filename_seen_cache, name, 1))
{
/* Yes; don't print it again. */
return;
}
+
/* No; print it and reset *FIRST. */
- if (*first)
- {
- *first = 0;
- }
- else
- {
- printf_filtered (", ");
- }
+ if (! data->first)
+ printf_filtered (", ");
+ data->first = 0;
wrap_here ("");
fputs_filtered (name, gdb_stdout);
}
/* A callback for map_partial_symbol_filenames. */
+
static void
output_partial_symbol_filename (const char *filename, const char *fullname,
void *data)
{
struct symtab *s;
struct objfile *objfile;
- int first;
+ struct output_source_filename_data data;
+ struct cleanup *cleanups;
if (!have_full_symbols () && !have_partial_symbols ())
{
error (_("No symbol table is loaded. Use the \"file\" command."));
}
+ data.filename_seen_cache = create_filename_seen_cache ();
+ cleanups = make_cleanup (delete_filename_seen_cache,
+ data.filename_seen_cache);
+
printf_filtered ("Source files for which symbols have been read in:\n\n");
- first = 1;
+ data.first = 1;
ALL_SYMTABS (objfile, s)
{
const char *fullname = symtab_to_fullname (s);
- output_source_filename (fullname ? fullname : s->filename, &first);
+ output_source_filename (fullname, &data);
}
printf_filtered ("\n\n");
printf_filtered ("Source files for which symbols "
"will be read in on demand:\n\n");
- first = 1;
- map_partial_symbol_filenames (output_partial_symbol_filename, &first);
+ clear_filename_seen_cache (data.filename_seen_cache);
+ data.first = 1;
+ map_partial_symbol_filenames (output_partial_symbol_filename, &data,
+ 1 /*need_fullname*/);
printf_filtered ("\n");
+
+ do_cleanups (cleanups);
}
+/* Compare FILE against all the NFILES entries of FILES. If BASENAMES is
+ non-zero compare only lbasename of FILES. */
+
static int
-file_matches (const char *file, char *files[], int nfiles)
+file_matches (const char *file, char *files[], int nfiles, int basenames)
{
int i;
{
for (i = 0; i < nfiles; i++)
{
- if (filename_cmp (files[i], lbasename (file)) == 0)
+ if (compare_filenames_for_search (file, (basenames
+ ? lbasename (files[i])
+ : files[i])))
return 1;
}
}
}
/* Free any memory associated with a search. */
+
void
free_search_symbols (struct symbol_search *symbols)
{
/* Helper function for sort_search_symbols and qsort. Can only
sort symbols, not minimal symbols. */
+
static int
compare_search_syms (const void *sa, const void *sb)
{
/* Sort the ``nfound'' symbols in the list after prevtail. Leave
prevtail where it is, but update its next pointer to point to
the first of the sorted symbols. */
+
static struct symbol_search *
sort_search_symbols (struct symbol_search *prevtail, int nfound)
{
};
/* A callback for expand_symtabs_matching. */
+
static int
-search_symbols_file_matches (const char *filename, void *user_data)
+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);
+ 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 blockvector *bv;
struct block *b;
int i = 0;
- struct dict_iterator iter;
+ struct block_iterator iter;
struct symbol *sym;
struct objfile *objfile;
struct minimal_symbol *msymbol;
- char *val;
int found_misc = 0;
static const enum minimal_symbol_type types[]
= {mst_data, mst_text, mst_abs};
{
if (objfile->sf)
objfile->sf->qf->expand_symtabs_matching (objfile,
- search_symbols_file_matches,
+ (nfiles == 0
+ ? NULL
+ : search_symbols_file_matches),
search_symbols_name_matches,
kind,
&datum);
}
- retval_chain = old_chain;
+ retval_chain = make_cleanup (null_cleanup, NULL);
/* Here, we search through the minimal symbol tables for functions
and variables that match, and force their symbols to be read.
The symbol will then be found during the scan of symtabs below.
For functions, find_pc_symtab should succeed if we have debug info
- for the function, for variables we have to call lookup_symbol
- to determine if the variable has debug info.
+ for the function, for variables we have to call
+ lookup_symbol_in_objfile_from_linkage_name to determine if the variable
+ has debug info.
If the lookup fails, set found_misc so that we will rescan to print
- any matching symbols without debug info. */
+ any matching symbols without debug info.
+ We only search the objfile the msymbol came from, we no longer search
+ all objfiles. In large programs (1000s of shared libs) searching all
+ objfiles is not worth the pain. */
if (nfiles == 0 && (kind == VARIABLES_DOMAIN || kind == FUNCTIONS_DOMAIN))
{
{
QUIT;
- if (MSYMBOL_TYPE (msymbol) == ourtype ||
- MSYMBOL_TYPE (msymbol) == ourtype2 ||
- MSYMBOL_TYPE (msymbol) == ourtype3 ||
- MSYMBOL_TYPE (msymbol) == ourtype4)
+ if (msymbol->created_by_gdb)
+ continue;
+
+ if (MSYMBOL_TYPE (msymbol) == ourtype
+ || MSYMBOL_TYPE (msymbol) == ourtype2
+ || MSYMBOL_TYPE (msymbol) == ourtype3
+ || MSYMBOL_TYPE (msymbol) == ourtype4)
{
if (!datum.preg_p
|| regexec (&datum.preg, SYMBOL_NATURAL_NAME (msymbol), 0,
NULL, 0) == 0)
{
- if (0 == find_pc_symtab (SYMBOL_VALUE_ADDRESS (msymbol)))
- {
- /* FIXME: carlton/2003-02-04: Given that the
- semantics of lookup_symbol keeps on changing
- slightly, it would be a nice idea if we had a
- function lookup_symbol_minsym that found the
- symbol associated to a given minimal symbol (if
- any). */
- if (kind == FUNCTIONS_DOMAIN
- || lookup_symbol (SYMBOL_LINKAGE_NAME (msymbol),
- (struct block *) NULL,
- VAR_DOMAIN, 0)
- == NULL)
- found_misc = 1;
- }
+ /* Note: An important side-effect of these lookup functions
+ is to expand the symbol table if msymbol is found, for the
+ benefit of the next loop on ALL_PRIMARY_SYMTABS. */
+ if (kind == FUNCTIONS_DOMAIN
+ ? find_pc_symtab (SYMBOL_VALUE_ADDRESS (msymbol)) == NULL
+ : (lookup_symbol_in_objfile_from_linkage_name
+ (objfile, SYMBOL_LINKAGE_NAME (msymbol), VAR_DOMAIN)
+ == NULL))
+ found_misc = 1;
}
}
}
ALL_PRIMARY_SYMTABS (objfile, s)
{
bv = BLOCKVECTOR (s);
- for (i = GLOBAL_BLOCK; i <= STATIC_BLOCK; i++)
- {
- struct symbol_search *prevtail = tail;
- int nfound = 0;
+ for (i = GLOBAL_BLOCK; i <= STATIC_BLOCK; i++)
+ {
+ struct symbol_search *prevtail = tail;
+ int nfound = 0;
- b = BLOCKVECTOR_BLOCK (bv, i);
- ALL_BLOCK_SYMBOLS (b, iter, sym)
- {
- struct symtab *real_symtab = SYMBOL_SYMTAB (sym);
-
- QUIT;
-
- if (file_matches (real_symtab->filename, files, nfiles)
- && ((!datum.preg_p
- || regexec (&datum.preg, SYMBOL_NATURAL_NAME (sym), 0,
- NULL, 0) == 0)
- && ((kind == VARIABLES_DOMAIN
- && SYMBOL_CLASS (sym) != LOC_TYPEDEF
- && SYMBOL_CLASS (sym) != LOC_UNRESOLVED
- && SYMBOL_CLASS (sym) != LOC_BLOCK
- /* LOC_CONST can be used for more than just enums,
- e.g., c++ static const members.
- We only want to skip enums here. */
- && !(SYMBOL_CLASS (sym) == LOC_CONST
- && TYPE_CODE (SYMBOL_TYPE (sym))
- == TYPE_CODE_ENUM))
- || (kind == FUNCTIONS_DOMAIN
- && SYMBOL_CLASS (sym) == LOC_BLOCK)
- || (kind == TYPES_DOMAIN
- && SYMBOL_CLASS (sym) == LOC_TYPEDEF))))
- {
- /* match */
- psr = (struct symbol_search *)
- xmalloc (sizeof (struct symbol_search));
- psr->block = i;
- psr->symtab = real_symtab;
- psr->symbol = sym;
- psr->msymbol = NULL;
- psr->next = NULL;
- if (tail == NULL)
- sr = psr;
- else
- tail->next = psr;
- tail = psr;
- nfound ++;
- }
- }
- if (nfound > 0)
- {
- if (prevtail == NULL)
- {
- struct symbol_search dummy;
+ b = BLOCKVECTOR_BLOCK (bv, i);
+ ALL_BLOCK_SYMBOLS (b, iter, sym)
+ {
+ struct symtab *real_symtab = SYMBOL_SYMTAB (sym);
+
+ QUIT;
+
+ /* Check first sole REAL_SYMTAB->FILENAME. It does not need to be
+ a substring of symtab_to_fullname as it may contain "./" etc. */
+ if ((file_matches (real_symtab->filename, files, nfiles, 0)
+ || ((basenames_may_differ
+ || file_matches (lbasename (real_symtab->filename),
+ files, nfiles, 1))
+ && file_matches (symtab_to_fullname (real_symtab),
+ files, nfiles, 0)))
+ && ((!datum.preg_p
+ || regexec (&datum.preg, SYMBOL_NATURAL_NAME (sym), 0,
+ NULL, 0) == 0)
+ && ((kind == VARIABLES_DOMAIN
+ && SYMBOL_CLASS (sym) != LOC_TYPEDEF
+ && SYMBOL_CLASS (sym) != LOC_UNRESOLVED
+ && SYMBOL_CLASS (sym) != LOC_BLOCK
+ /* LOC_CONST can be used for more than just enums,
+ e.g., c++ static const members.
+ We only want to skip enums here. */
+ && !(SYMBOL_CLASS (sym) == LOC_CONST
+ && TYPE_CODE (SYMBOL_TYPE (sym))
+ == TYPE_CODE_ENUM))
+ || (kind == FUNCTIONS_DOMAIN
+ && SYMBOL_CLASS (sym) == LOC_BLOCK)
+ || (kind == TYPES_DOMAIN
+ && SYMBOL_CLASS (sym) == LOC_TYPEDEF))))
+ {
+ /* match */
+ psr = (struct symbol_search *)
+ xmalloc (sizeof (struct symbol_search));
+ psr->block = i;
+ psr->symtab = real_symtab;
+ psr->symbol = sym;
+ psr->msymbol = NULL;
+ psr->next = NULL;
+ if (tail == NULL)
+ sr = psr;
+ else
+ tail->next = psr;
+ tail = psr;
+ nfound ++;
+ }
+ }
+ if (nfound > 0)
+ {
+ if (prevtail == NULL)
+ {
+ struct symbol_search dummy;
- dummy.next = sr;
- tail = sort_search_symbols (&dummy, nfound);
- sr = dummy.next;
+ dummy.next = sr;
+ tail = sort_search_symbols (&dummy, nfound);
+ sr = dummy.next;
- make_cleanup_free_search_symbols (sr);
- }
- else
- tail = sort_search_symbols (prevtail, nfound);
- }
- }
+ make_cleanup_free_search_symbols (sr);
+ }
+ else
+ tail = sort_search_symbols (prevtail, nfound);
+ }
+ }
}
/* If there are no eyes, avoid all contact. I mean, if there are
no debug symbols, then print directly from the msymbol_vector. */
- if (found_misc || kind != FUNCTIONS_DOMAIN)
+ if (found_misc || (nfiles == 0 && kind != FUNCTIONS_DOMAIN))
{
ALL_MSYMBOLS (objfile, msymbol)
{
QUIT;
- if (MSYMBOL_TYPE (msymbol) == ourtype ||
- MSYMBOL_TYPE (msymbol) == ourtype2 ||
- MSYMBOL_TYPE (msymbol) == ourtype3 ||
- MSYMBOL_TYPE (msymbol) == ourtype4)
+ if (msymbol->created_by_gdb)
+ continue;
+
+ if (MSYMBOL_TYPE (msymbol) == ourtype
+ || MSYMBOL_TYPE (msymbol) == ourtype2
+ || MSYMBOL_TYPE (msymbol) == ourtype3
+ || MSYMBOL_TYPE (msymbol) == ourtype4)
{
if (!datum.preg_p
|| regexec (&datum.preg, SYMBOL_NATURAL_NAME (msymbol), 0,
NULL, 0) == 0)
{
- /* Functions: Look up by address. */
- if (kind != FUNCTIONS_DOMAIN ||
- (0 == find_pc_symtab (SYMBOL_VALUE_ADDRESS (msymbol))))
+ /* For functions we can do a quick check of whether the
+ symbol might be found via find_pc_symtab. */
+ if (kind != FUNCTIONS_DOMAIN
+ || find_pc_symtab (SYMBOL_VALUE_ADDRESS (msymbol)) == NULL)
{
- /* Variables/Absolutes: Look up by name. */
- if (lookup_symbol (SYMBOL_LINKAGE_NAME (msymbol),
- (struct block *) NULL, VAR_DOMAIN, 0)
- == NULL)
+ if (lookup_symbol_in_objfile_from_linkage_name
+ (objfile, SYMBOL_LINKAGE_NAME (msymbol), VAR_DOMAIN)
+ == NULL)
{
/* match */
psr = (struct symbol_search *)
static void
print_symbol_info (enum search_domain kind,
struct symtab *s, struct symbol *sym,
- int block, char *last)
+ int block, const char *last)
{
- if (last == NULL || filename_cmp (last, s->filename) != 0)
+ const char *s_filename = symtab_to_filename_for_display (s);
+
+ if (last == NULL || filename_cmp (last, s_filename) != 0)
{
fputs_filtered ("\nFile ", gdb_stdout);
- fputs_filtered (s->filename, gdb_stdout);
+ fputs_filtered (s_filename, gdb_stdout);
fputs_filtered (":\n", gdb_stdout);
}
&& SYMBOL_DOMAIN (sym) != STRUCT_DOMAIN)
typedef_print (SYMBOL_TYPE (sym), sym, gdb_stdout);
/* variable, func, or typedef-that-is-c++-class. */
- else if (kind < TYPES_DOMAIN ||
- (kind == TYPES_DOMAIN &&
- SYMBOL_DOMAIN (sym) == STRUCT_DOMAIN))
+ else if (kind < TYPES_DOMAIN
+ || (kind == TYPES_DOMAIN
+ && SYMBOL_DOMAIN (sym) == STRUCT_DOMAIN))
{
type_print (SYMBOL_TYPE (sym),
(SYMBOL_CLASS (sym) == LOC_TYPEDEF
struct symbol_search *symbols;
struct symbol_search *p;
struct cleanup *old_chain;
- char *last_filename = NULL;
+ const char *last_filename = NULL;
int first = 1;
gdb_assert (kind <= TYPES_DOMAIN);
search_symbols (regexp, kind, 0, (char **) NULL, &symbols);
old_chain = make_cleanup_free_search_symbols (symbols);
- printf_filtered (regexp
- ? "All %ss matching regular expression \"%s\":\n"
- : "All defined %ss:\n",
- classnames[kind], regexp);
+ if (regexp != NULL)
+ printf_filtered (_("All %ss matching regular expression \"%s\":\n"),
+ classnames[kind], regexp);
+ else
+ printf_filtered (_("All defined %ss:\n"), classnames[kind]);
for (p = symbols; p != NULL; p = p->next)
{
{
if (first)
{
- printf_filtered ("\nNon-debugging symbols:\n");
+ printf_filtered (_("\nNon-debugging symbols:\n"));
first = 0;
}
print_msymbol_info (p->msymbol);
p->symbol,
p->block,
last_filename);
- last_filename = p->symtab->filename;
+ last_filename = symtab_to_filename_for_display (p->symtab);
}
}
file_name[colon_index--] = 0;
files = &file_name;
nfiles = 1;
- regexp = colon + 1;
- while (isspace (*regexp)) regexp++;
+ regexp = skip_spaces (colon + 1);
}
}
{
if (p->msymbol == NULL)
{
- int newlen = (strlen (p->symtab->filename)
+ const char *fullname = symtab_to_fullname (p->symtab);
+
+ int newlen = (strlen (fullname)
+ strlen (SYMBOL_LINKAGE_NAME (p->symbol))
+ 4);
string = xrealloc (string, newlen);
len = newlen;
}
- strcpy (string, p->symtab->filename);
+ strcpy (string, fullname);
strcat (string, ":'");
strcat (string, SYMBOL_LINKAGE_NAME (p->symbol));
strcat (string, "'");
p->symtab,
p->symbol,
p->block,
- p->symtab->filename);
+ symtab_to_filename_for_display (p->symtab));
}
else
{
return 1;
}
+/* Free any memory associated with a completion list. */
+
+static void
+free_completion_list (VEC (char_ptr) **list_ptr)
+{
+ int i;
+ char *p;
+
+ for (i = 0; VEC_iterate (char_ptr, *list_ptr, i, p); ++i)
+ xfree (p);
+ VEC_free (char_ptr, *list_ptr);
+}
+
+/* Callback for make_cleanup. */
+
+static void
+do_free_completion_list (void *list)
+{
+ free_completion_list (list);
+}
+
/* Helper routine for make_symbol_completion_list. */
-static int return_val_size;
-static int return_val_index;
-static char **return_val;
+static VEC (char_ptr) *return_val;
#define COMPLETION_LIST_ADD_SYMBOL(symbol, sym_text, len, text, word) \
completion_list_add_name \
characters. If so, add it to the current completion list. */
static void
-completion_list_add_name (char *symname, char *sym_text, int sym_text_len,
- char *text, char *word)
+completion_list_add_name (const char *symname,
+ const char *sym_text, int sym_text_len,
+ const char *text, const char *word)
{
- int newsize;
-
/* Clip symbols that cannot match. */
if (!compare_symbol_name (symname, sym_text, sym_text_len))
return;
strcat (new, symname);
}
- if (return_val_index + 3 > return_val_size)
- {
- newsize = (return_val_size *= 2) * sizeof (char *);
- return_val = (char **) xrealloc ((char *) return_val, newsize);
- }
- return_val[return_val_index++] = new;
- return_val[return_val_index] = NULL;
+ VEC_safe_push (char_ptr, return_val, new);
}
}
again and feed all the selectors into the mill. */
static void
-completion_list_objc_symbol (struct minimal_symbol *msymbol, char *sym_text,
- int sym_text_len, char *text, char *word)
+completion_list_objc_symbol (struct minimal_symbol *msymbol,
+ const char *sym_text, int sym_text_len,
+ const char *text, const char *word)
{
static char *tmp = NULL;
static unsigned int tmplen = 0;
- char *method, *category, *selector;
+ const char *method, *category, *selector;
char *tmp2 = NULL;
method = SYMBOL_NATURAL_NAME (msymbol);
/* Break the non-quoted text based on the characters which are in
symbols. FIXME: This should probably be language-specific. */
-static char *
-language_search_unquoted_string (char *text, char *p)
+static const char *
+language_search_unquoted_string (const char *text, const char *p)
{
for (; p > text; --p)
{
p -= 2; /* Beginning of a method name. */
else if (p[-1] == ' ' || p[-1] == '(' || p[-1] == ')')
{ /* Might be part of a method name. */
- char *t = p;
+ const char *t = p;
/* Seeing a ' ' or a '(' is not conclusive evidence
that we are in the middle of a method name. However,
}
static void
-completion_list_add_fields (struct symbol *sym, char *sym_text,
- int sym_text_len, char *text, char *word)
+completion_list_add_fields (struct symbol *sym, const char *sym_text,
+ int sym_text_len, const char *text,
+ const char *word)
{
if (SYMBOL_CLASS (sym) == LOC_TYPEDEF)
{
needed by completion_list_add_name. */
struct add_name_data
{
- char *sym_text;
+ const char *sym_text;
int sym_text_len;
- char *text;
- char *word;
+ const char *text;
+ const char *word;
};
/* 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;
}
/* A callback for expand_partial_symbol_names. */
+
static int
expand_partial_symbol_name (const char *name, void *user_data)
{
return compare_symbol_name (name, datum->sym_text, datum->sym_text_len);
}
-char **
-default_make_symbol_completion_list_break_on (char *text, char *word,
- const char *break_on)
+VEC (char_ptr) *
+default_make_symbol_completion_list_break_on (const char *text,
+ const char *word,
+ const char *break_on,
+ enum type_code code)
{
/* Problem: All of the symbols have to be copied because readline
frees them. I'm not going to worry about this; hopefully there
struct objfile *objfile;
struct block *b;
const struct block *surrounding_static_block, *surrounding_global_block;
- struct dict_iterator iter;
+ struct block_iterator iter;
/* The symbol we are completing on. Points in same buffer as text. */
- char *sym_text;
+ const char *sym_text;
/* Length of sym_text. */
int sym_text_len;
struct add_name_data datum;
+ struct cleanup *back_to;
/* Now look for the symbol we are supposed to complete on. */
{
- char *p;
+ const char *p;
char quote_found;
- char *quote_pos = NULL;
+ const char *quote_pos = NULL;
/* First see if this is a quoted string. */
quote_found = '\0';
/* A double-quoted string is never a symbol, nor does it make sense
to complete it any other way. */
{
- return_val = (char **) xmalloc (sizeof (char *));
- return_val[0] = NULL;
- return return_val;
+ return NULL;
}
else
{
}
gdb_assert (sym_text[sym_text_len] == '\0' || sym_text[sym_text_len] == '(');
- return_val_size = 100;
- return_val_index = 0;
- return_val = (char **) xmalloc ((return_val_size + 1) * sizeof (char *));
- return_val[0] = NULL;
+ return_val = NULL;
+ back_to = make_cleanup (do_free_completion_list, &return_val);
datum.sym_text = sym_text;
datum.sym_text_len = sym_text_len;
anything that isn't a text symbol (everything else will be
handled by the psymtab code above). */
- ALL_MSYMBOLS (objfile, msymbol)
- {
- QUIT;
- COMPLETION_LIST_ADD_SYMBOL (msymbol, sym_text, sym_text_len, text, word);
+ if (code == TYPE_CODE_UNDEF)
+ {
+ ALL_MSYMBOLS (objfile, msymbol)
+ {
+ QUIT;
+ COMPLETION_LIST_ADD_SYMBOL (msymbol, sym_text, sym_text_len, text,
+ word);
- completion_list_objc_symbol (msymbol, sym_text, sym_text_len, text, word);
- }
+ completion_list_objc_symbol (msymbol, sym_text, sym_text_len, text,
+ word);
+ }
+ }
/* Search upwards from currently selected frame (so that we can
complete on local vars). Also catch fields of types defined in
ALL_BLOCK_SYMBOLS (b, iter, sym)
{
- COMPLETION_LIST_ADD_SYMBOL (sym, sym_text, sym_text_len, text,
- word);
- completion_list_add_fields (sym, sym_text, sym_text_len, text,
- word);
+ if (code == TYPE_CODE_UNDEF)
+ {
+ COMPLETION_LIST_ADD_SYMBOL (sym, sym_text, sym_text_len, text,
+ word);
+ completion_list_add_fields (sym, sym_text, sym_text_len, text,
+ word);
+ }
+ else if (SYMBOL_DOMAIN (sym) == STRUCT_DOMAIN
+ && TYPE_CODE (SYMBOL_TYPE (sym)) == code)
+ COMPLETION_LIST_ADD_SYMBOL (sym, sym_text, sym_text_len, text,
+ word);
}
/* Stop when we encounter an enclosing function. Do not stop for
/* Add fields from the file's types; symbols will be added below. */
- if (surrounding_static_block != NULL)
- ALL_BLOCK_SYMBOLS (surrounding_static_block, iter, sym)
- completion_list_add_fields (sym, sym_text, sym_text_len, text, word);
+ if (code == TYPE_CODE_UNDEF)
+ {
+ if (surrounding_static_block != NULL)
+ ALL_BLOCK_SYMBOLS (surrounding_static_block, iter, sym)
+ completion_list_add_fields (sym, sym_text, sym_text_len, text, word);
- if (surrounding_global_block != NULL)
- ALL_BLOCK_SYMBOLS (surrounding_global_block, iter, sym)
- completion_list_add_fields (sym, sym_text, sym_text_len, text, word);
+ if (surrounding_global_block != NULL)
+ ALL_BLOCK_SYMBOLS (surrounding_global_block, iter, sym)
+ completion_list_add_fields (sym, sym_text, sym_text_len, text, word);
+ }
/* Go through the symtabs and check the externs and statics for
symbols which match. */
b = BLOCKVECTOR_BLOCK (BLOCKVECTOR (s), GLOBAL_BLOCK);
ALL_BLOCK_SYMBOLS (b, iter, sym)
{
- COMPLETION_LIST_ADD_SYMBOL (sym, sym_text, sym_text_len, text, word);
+ if (code == TYPE_CODE_UNDEF
+ || (SYMBOL_DOMAIN (sym) == STRUCT_DOMAIN
+ && TYPE_CODE (SYMBOL_TYPE (sym)) == code))
+ COMPLETION_LIST_ADD_SYMBOL (sym, sym_text, sym_text_len, text, word);
}
}
b = BLOCKVECTOR_BLOCK (BLOCKVECTOR (s), STATIC_BLOCK);
ALL_BLOCK_SYMBOLS (b, iter, sym)
{
- COMPLETION_LIST_ADD_SYMBOL (sym, sym_text, sym_text_len, text, word);
+ if (code == TYPE_CODE_UNDEF
+ || (SYMBOL_DOMAIN (sym) == STRUCT_DOMAIN
+ && TYPE_CODE (SYMBOL_TYPE (sym)) == code))
+ COMPLETION_LIST_ADD_SYMBOL (sym, sym_text, sym_text_len, text, word);
}
}
- if (current_language->la_macro_expansion == macro_expansion_c)
+ /* Skip macros if we are completing a struct tag -- arguable but
+ usually what is expected. */
+ if (current_language->la_macro_expansion == macro_expansion_c
+ && code == TYPE_CODE_UNDEF)
{
struct macro_scope *scope;
macro_for_each (macro_user_macros, add_macro_name, &datum);
}
+ discard_cleanups (back_to);
return (return_val);
}
-char **
-default_make_symbol_completion_list (char *text, char *word)
+VEC (char_ptr) *
+default_make_symbol_completion_list (const char *text, const char *word,
+ enum type_code code)
+{
+ return default_make_symbol_completion_list_break_on (text, word, "", code);
+}
+
+/* Return a vector of all symbols (regardless of class) which begin by
+ matching TEXT. If the answer is no symbols, then the return value
+ is NULL. */
+
+VEC (char_ptr) *
+make_symbol_completion_list (const char *text, const char *word)
{
- return default_make_symbol_completion_list_break_on (text, word, "");
+ return current_language->la_make_symbol_completion_list (text, word,
+ TYPE_CODE_UNDEF);
}
-/* Return a NULL terminated array of all symbols (regardless of class)
- which begin by matching TEXT. If the answer is no symbols, then
- the return value is an array which contains only a NULL pointer. */
+/* Like make_symbol_completion_list, but only return STRUCT_DOMAIN
+ symbols whose type code is CODE. */
-char **
-make_symbol_completion_list (char *text, char *word)
+VEC (char_ptr) *
+make_symbol_completion_type (const char *text, const char *word,
+ enum type_code code)
{
- return current_language->la_make_symbol_completion_list (text, word);
+ gdb_assert (code == TYPE_CODE_UNION
+ || code == TYPE_CODE_STRUCT
+ || code == TYPE_CODE_CLASS
+ || code == TYPE_CODE_ENUM);
+ return current_language->la_make_symbol_completion_list (text, word, code);
}
/* Like make_symbol_completion_list, but suitable for use as a
completion function. */
-char **
+VEC (char_ptr) *
make_symbol_completion_list_fn (struct cmd_list_element *ignore,
- char *text, char *word)
+ const char *text, const char *word)
{
return make_symbol_completion_list (text, word);
}
/* Like make_symbol_completion_list, but returns a list of symbols
defined in a source file FILE. */
-char **
-make_file_symbol_completion_list (char *text, char *word, char *srcfile)
+VEC (char_ptr) *
+make_file_symbol_completion_list (const char *text, const char *word,
+ const char *srcfile)
{
struct symbol *sym;
struct symtab *s;
struct block *b;
- struct dict_iterator iter;
+ struct block_iterator iter;
/* The symbol we are completing on. Points in same buffer as text. */
- char *sym_text;
+ const char *sym_text;
/* Length of sym_text. */
int sym_text_len;
/* Now look for the symbol we are supposed to complete on.
FIXME: This should be language-specific. */
{
- char *p;
+ const char *p;
char quote_found;
- char *quote_pos = NULL;
+ const char *quote_pos = NULL;
/* First see if this is a quoted string. */
quote_found = '\0';
/* A double-quoted string is never a symbol, nor does it make sense
to complete it any other way. */
{
- return_val = (char **) xmalloc (sizeof (char *));
- return_val[0] = NULL;
- return return_val;
+ return NULL;
}
else
{
sym_text_len = strlen (sym_text);
- return_val_size = 10;
- return_val_index = 0;
- return_val = (char **) xmalloc ((return_val_size + 1) * sizeof (char *));
- return_val[0] = NULL;
+ return_val = NULL;
/* Find the symtab for SRCFILE (this loads it if it was not yet read
in). */
list as necessary. */
static void
-add_filename_to_list (const char *fname, char *text, char *word,
- char ***list, int *list_used, int *list_alloced)
+add_filename_to_list (const char *fname, const char *text, const char *word,
+ VEC (char_ptr) **list)
{
char *new;
size_t fnlen = strlen (fname);
- if (*list_used + 1 >= *list_alloced)
- {
- *list_alloced *= 2;
- *list = (char **) xrealloc ((char *) *list,
- *list_alloced * sizeof (char *));
- }
-
if (word == text)
{
/* Return exactly fname. */
new[text - word] = '\0';
strcat (new, fname);
}
- (*list)[*list_used] = new;
- (*list)[++*list_used] = NULL;
+ VEC_safe_push (char_ptr, *list, new);
}
static int
map_partial_symbol_filenames. */
struct add_partial_filename_data
{
- int *first;
- char *text;
- char *word;
+ struct filename_seen_cache *filename_seen_cache;
+ const char *text;
+ const char *word;
int text_len;
- char ***list;
- int *list_used;
- int *list_alloced;
+ VEC (char_ptr) **list;
};
/* A callback for map_partial_symbol_filenames. */
+
static void
maybe_add_partial_symtab_filename (const char *filename, const char *fullname,
void *user_data)
if (not_interesting_fname (filename))
return;
- if (!filename_seen (filename, 1, data->first)
+ if (!filename_seen (data->filename_seen_cache, filename, 1)
&& filename_ncmp (filename, data->text, data->text_len) == 0)
{
/* This file matches for a completion; add it to the
current list of matches. */
- add_filename_to_list (filename, data->text, data->word,
- data->list, data->list_used, data->list_alloced);
+ add_filename_to_list (filename, data->text, data->word, data->list);
}
else
{
const char *base_name = lbasename (filename);
if (base_name != filename
- && !filename_seen (base_name, 1, data->first)
+ && !filename_seen (data->filename_seen_cache, base_name, 1)
&& filename_ncmp (base_name, data->text, data->text_len) == 0)
- add_filename_to_list (base_name, data->text, data->word,
- data->list, data->list_used, data->list_alloced);
+ add_filename_to_list (base_name, data->text, data->word, data->list);
}
}
-/* Return a NULL terminated array of all source files whose names
- begin with matching TEXT. The file names are looked up in the
- symbol tables of this program. If the answer is no matchess, then
- the return value is an array which contains only a NULL pointer. */
+/* Return a vector of all source files whose names begin with matching
+ TEXT. The file names are looked up in the symbol tables of this
+ program. If the answer is no matchess, then the return value is
+ NULL. */
-char **
-make_source_files_completion_list (char *text, char *word)
+VEC (char_ptr) *
+make_source_files_completion_list (const char *text, const char *word)
{
struct symtab *s;
struct objfile *objfile;
- int first = 1;
- int list_alloced = 1;
- int list_used = 0;
size_t text_len = strlen (text);
- char **list = (char **) xmalloc (list_alloced * sizeof (char *));
+ VEC (char_ptr) *list = NULL;
const char *base_name;
struct add_partial_filename_data datum;
-
- list[0] = NULL;
+ struct filename_seen_cache *filename_seen_cache;
+ struct cleanup *back_to, *cache_cleanup;
if (!have_full_symbols () && !have_partial_symbols ())
return list;
+ back_to = make_cleanup (do_free_completion_list, &list);
+
+ filename_seen_cache = create_filename_seen_cache ();
+ cache_cleanup = make_cleanup (delete_filename_seen_cache,
+ filename_seen_cache);
+
ALL_SYMTABS (objfile, s)
{
if (not_interesting_fname (s->filename))
continue;
- if (!filename_seen (s->filename, 1, &first)
+ if (!filename_seen (filename_seen_cache, s->filename, 1)
&& filename_ncmp (s->filename, text, text_len) == 0)
{
/* This file matches for a completion; add it to the current
list of matches. */
- add_filename_to_list (s->filename, text, word,
- &list, &list_used, &list_alloced);
+ add_filename_to_list (s->filename, text, word, &list);
}
else
{
command do when they parse file names. */
base_name = lbasename (s->filename);
if (base_name != s->filename
- && !filename_seen (base_name, 1, &first)
+ && !filename_seen (filename_seen_cache, base_name, 1)
&& filename_ncmp (base_name, text, text_len) == 0)
- add_filename_to_list (base_name, text, word,
- &list, &list_used, &list_alloced);
+ add_filename_to_list (base_name, text, word, &list);
}
}
- datum.first = &first;
+ datum.filename_seen_cache = filename_seen_cache;
datum.text = text;
datum.word = word;
datum.text_len = text_len;
datum.list = &list;
- datum.list_used = &list_used;
- datum.list_alloced = &list_alloced;
- map_partial_symbol_filenames (maybe_add_partial_symtab_filename, &datum);
+ map_partial_symbol_filenames (maybe_add_partial_symtab_filename, &datum,
+ 0 /*need_fullname*/);
+
+ do_cleanups (cache_cleanup);
+ discard_cleanups (back_to);
return list;
}
The functions end point and an increasing SAL line are used as
indicators of the prologue's endpoint.
- This code is based on the function refine_prologue_limit (versions
- found in both ia64 and ppc). */
+ This code is based on the function refine_prologue_limit
+ (found in ia64). */
CORE_ADDR
skip_prologue_using_sal (struct gdbarch *gdbarch, CORE_ADDR func_addr)
prologue_sal = find_pc_line (start_pc, 0);
if (prologue_sal.line != 0)
{
- /* For langauges other than assembly, treat two consecutive line
+ /* For languages other than assembly, treat two consecutive line
entries at the same address as a zero-instruction prologue.
The GNU assembler emits separate line notes for each instruction
in a multi-instruction macro, but compilers generally will not
line mark the prologue -> body transition. */
if (sal.line >= prologue_sal.line)
break;
+ /* Likewise if we are in a different symtab altogether
+ (e.g. within a file included via #include). */
+ if (sal.symtab != prologue_sal.symtab)
+ break;
/* The line number is smaller. Check that it's from the
same function, not something inlined. If it's inlined,
return prologue_sal.pc;
}
\f
-struct symtabs_and_lines
-decode_line_spec (char *string, int funfirstline)
-{
- struct symtabs_and_lines sals;
- struct symtab_and_line cursal;
-
- if (string == 0)
- error (_("Empty line specification."));
-
- /* We use whatever is set as the current source line. We do not try
- and get a default or it will recursively call us! */
- cursal = get_current_source_symtab_and_line ();
-
- sals = decode_line_1 (&string, funfirstline,
- cursal.symtab, cursal.line,
- NULL);
-
- if (*string)
- error (_("Junk at end of line specification: %s"), string);
- return sals;
-}
-
/* Track MAIN */
static char *name_of_main;
enum language language_of_main = language_unknown;
return;
}
+ new_main_name = go_main_name ();
+ if (new_main_name != NULL)
+ {
+ set_main_name (new_main_name);
+ return;
+ }
+
new_main_name = pascal_main_name ();
if (new_main_name != NULL)
{
set_main_name (NULL);
}
-/* Helper to expand_line_sal below. Appends new sal to SAL,
- initializing it from SYMTAB, LINENO and PC. */
-static void
-append_expanded_sal (struct symtabs_and_lines *sal,
- struct program_space *pspace,
- struct symtab *symtab,
- int lineno, CORE_ADDR pc)
-{
- sal->sals = xrealloc (sal->sals,
- sizeof (sal->sals[0])
- * (sal->nelts + 1));
- init_sal (sal->sals + sal->nelts);
- sal->sals[sal->nelts].pspace = pspace;
- sal->sals[sal->nelts].symtab = symtab;
- sal->sals[sal->nelts].section = NULL;
- sal->sals[sal->nelts].end = 0;
- sal->sals[sal->nelts].line = lineno;
- sal->sals[sal->nelts].pc = pc;
- ++sal->nelts;
+/* Return 1 if the supplied producer string matches the ARM RealView
+ compiler (armcc). */
+
+int
+producer_is_realview (const char *producer)
+{
+ static const char *const arm_idents[] = {
+ "ARM C Compiler, ADS",
+ "Thumb C Compiler, ADS",
+ "ARM C++ Compiler, ADS",
+ "Thumb C++ Compiler, ADS",
+ "ARM/Thumb C/C++ Compiler, RVCT",
+ "ARM C/C++ Compiler, RVCT"
+ };
+ int i;
+
+ if (producer == NULL)
+ return 0;
+
+ for (i = 0; i < ARRAY_SIZE (arm_idents); i++)
+ if (strncmp (producer, arm_idents[i], strlen (arm_idents[i])) == 0)
+ return 1;
+
+ return 0;
}
-/* Helper to expand_line_sal below. Search in the symtabs for any
- linetable entry that exactly matches FULLNAME and LINENO and append
- them to RET. If FULLNAME is NULL or if a symtab has no full name,
- use FILENAME and LINENO instead. If there is at least one match,
- return 1; otherwise, return 0, and return the best choice in BEST_ITEM
- and BEST_SYMTAB. */
+\f
+
+/* The next index to hand out in response to a registration request. */
-static int
-append_exact_match_to_sals (char *filename, char *fullname, int lineno,
- struct symtabs_and_lines *ret,
- struct linetable_entry **best_item,
- struct symtab **best_symtab)
+static int next_aclass_value = LOC_FINAL_VALUE;
+
+/* The maximum number of "aclass" registrations we support. This is
+ constant for convenience. */
+#define MAX_SYMBOL_IMPLS (LOC_FINAL_VALUE + 10)
+
+/* The objects representing the various "aclass" values. The elements
+ from 0 up to LOC_FINAL_VALUE-1 represent themselves, and subsequent
+ elements are those registered at gdb initialization time. */
+
+static struct symbol_impl symbol_impl[MAX_SYMBOL_IMPLS];
+
+/* The globally visible pointer. This is separate from 'symbol_impl'
+ so that it can be const. */
+
+const struct symbol_impl *symbol_impls = &symbol_impl[0];
+
+/* Make sure we saved enough room in struct symbol. */
+
+gdb_static_assert (MAX_SYMBOL_IMPLS <= (1 << SYMBOL_ACLASS_BITS));
+
+/* Register a computed symbol type. ACLASS must be LOC_COMPUTED. OPS
+ is the ops vector associated with this index. This returns the new
+ index, which should be used as the aclass_index field for symbols
+ of this type. */
+
+int
+register_symbol_computed_impl (enum address_class aclass,
+ const struct symbol_computed_ops *ops)
{
- struct program_space *pspace;
- struct objfile *objfile;
- struct symtab *symtab;
- int exact = 0;
- int j;
- *best_item = 0;
- *best_symtab = 0;
+ int result = next_aclass_value++;
- ALL_PSPACES (pspace)
- ALL_PSPACE_SYMTABS (pspace, objfile, symtab)
- {
- if (FILENAME_CMP (filename, symtab->filename) == 0)
- {
- struct linetable *l;
- int len;
-
- if (fullname != NULL
- && symtab_to_fullname (symtab) != NULL
- && FILENAME_CMP (fullname, symtab->fullname) != 0)
- continue;
- l = LINETABLE (symtab);
- if (!l)
- continue;
- len = l->nitems;
+ gdb_assert (aclass == LOC_COMPUTED);
+ gdb_assert (result < MAX_SYMBOL_IMPLS);
+ symbol_impl[result].aclass = aclass;
+ symbol_impl[result].ops_computed = ops;
- for (j = 0; j < len; j++)
- {
- struct linetable_entry *item = &(l->item[j]);
+ /* Sanity check OPS. */
+ 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->read_variable != NULL);
- if (item->line == lineno)
- {
- exact = 1;
- append_expanded_sal (ret, objfile->pspace,
- symtab, lineno, item->pc);
- }
- else if (!exact && item->line > lineno
- && (*best_item == NULL
- || item->line < (*best_item)->line))
- {
- *best_item = item;
- *best_symtab = symtab;
- }
- }
- }
- }
- return exact;
+ return result;
}
-/* Compute a set of all sals in all program spaces that correspond to
- same file and line as SAL and return those. If there are several
- sals that belong to the same block, only one sal for the block is
- included in results. */
+/* Register a function with frame base type. ACLASS must be LOC_BLOCK.
+ OPS is the ops vector associated with this index. This returns the
+ new index, which should be used as the aclass_index field for symbols
+ of this type. */
-struct symtabs_and_lines
-expand_line_sal (struct symtab_and_line sal)
+int
+register_symbol_block_impl (enum address_class aclass,
+ const struct symbol_block_ops *ops)
{
- struct symtabs_and_lines ret;
- int i, j;
- struct objfile *objfile;
- int lineno;
- int deleted = 0;
- struct block **blocks = NULL;
- int *filter;
- struct cleanup *old_chain;
+ int result = next_aclass_value++;
- ret.nelts = 0;
- ret.sals = NULL;
+ gdb_assert (aclass == LOC_BLOCK);
+ gdb_assert (result < MAX_SYMBOL_IMPLS);
+ symbol_impl[result].aclass = aclass;
+ symbol_impl[result].ops_block = ops;
- /* Only expand sals that represent file.c:line. */
- if (sal.symtab == NULL || sal.line == 0 || sal.pc != 0)
- {
- ret.sals = xmalloc (sizeof (struct symtab_and_line));
- ret.sals[0] = sal;
- ret.nelts = 1;
- return ret;
- }
- else
- {
- struct program_space *pspace;
- struct linetable_entry *best_item = 0;
- struct symtab *best_symtab = 0;
- int exact = 0;
- char *match_filename;
-
- lineno = sal.line;
- match_filename = sal.symtab->filename;
-
- /* We need to find all symtabs for a file which name
- is described by sal. We cannot just directly
- iterate over symtabs, since a symtab might not be
- yet created. We also cannot iterate over psymtabs,
- calling PSYMTAB_TO_SYMTAB and working on that symtab,
- since PSYMTAB_TO_SYMTAB will return NULL for psymtab
- corresponding to an included file. Therefore, we do
- first pass over psymtabs, reading in those with
- the right name. Then, we iterate over symtabs, knowing
- that all symtabs we're interested in are loaded. */
-
- old_chain = save_current_program_space ();
- ALL_PSPACES (pspace)
- {
- set_current_program_space (pspace);
- ALL_PSPACE_OBJFILES (pspace, objfile)
- {
- if (objfile->sf)
- objfile->sf->qf->expand_symtabs_with_filename (objfile,
- sal.symtab->filename);
- }
- }
- do_cleanups (old_chain);
-
- /* Now search the symtab for exact matches and append them. If
- none is found, append the best_item and all its exact
- matches. */
- symtab_to_fullname (sal.symtab);
- exact = append_exact_match_to_sals (sal.symtab->filename,
- sal.symtab->fullname, lineno,
- &ret, &best_item, &best_symtab);
- if (!exact && best_item)
- append_exact_match_to_sals (best_symtab->filename,
- best_symtab->fullname, best_item->line,
- &ret, &best_item, &best_symtab);
- }
+ /* Sanity check OPS. */
+ gdb_assert (ops != NULL);
+ gdb_assert (ops->find_frame_base_location != NULL);
- /* For optimized code, compiler can scatter one source line accross
- disjoint ranges of PC values, even when no duplicate functions
- or inline functions are involved. For example, 'for (;;)' inside
- non-template non-inline non-ctor-or-dtor function can result
- in two PC ranges. In this case, we don't want to set breakpoint
- on first PC of each range. To filter such cases, we use containing
- blocks -- for each PC found above we see if there are other PCs
- that are in the same block. If yes, the other PCs are filtered out. */
-
- old_chain = save_current_program_space ();
- filter = alloca (ret.nelts * sizeof (int));
- blocks = alloca (ret.nelts * sizeof (struct block *));
- for (i = 0; i < ret.nelts; ++i)
- {
- set_current_program_space (ret.sals[i].pspace);
+ return result;
+}
- filter[i] = 1;
- blocks[i] = block_for_pc_sect (ret.sals[i].pc, ret.sals[i].section);
+/* Register a register symbol type. ACLASS must be LOC_REGISTER or
+ LOC_REGPARM_ADDR. OPS is the register ops vector associated with
+ this index. This returns the new index, which should be used as
+ the aclass_index field for symbols of this type. */
- }
- do_cleanups (old_chain);
+int
+register_symbol_register_impl (enum address_class aclass,
+ const struct symbol_register_ops *ops)
+{
+ int result = next_aclass_value++;
- for (i = 0; i < ret.nelts; ++i)
- if (blocks[i] != NULL)
- for (j = i+1; j < ret.nelts; ++j)
- if (blocks[j] == blocks[i])
- {
- filter[j] = 0;
- ++deleted;
- break;
- }
+ gdb_assert (aclass == LOC_REGISTER || aclass == LOC_REGPARM_ADDR);
+ gdb_assert (result < MAX_SYMBOL_IMPLS);
+ symbol_impl[result].aclass = aclass;
+ symbol_impl[result].ops_register = ops;
- {
- struct symtab_and_line *final =
- xmalloc (sizeof (struct symtab_and_line) * (ret.nelts-deleted));
+ return result;
+}
- for (i = 0, j = 0; i < ret.nelts; ++i)
- if (filter[i])
- final[j++] = ret.sals[i];
+/* Initialize elements of 'symbol_impl' for the constants in enum
+ address_class. */
- ret.nelts -= deleted;
- xfree (ret.sals);
- ret.sals = final;
- }
+static void
+initialize_ordinary_address_classes (void)
+{
+ int i;
- return ret;
+ for (i = 0; i < LOC_FINAL_VALUE; ++i)
+ symbol_impl[i].aclass = i;
}
-/* Return 1 if the supplied producer string matches the ARM RealView
- compiler (armcc). */
+\f
-int
-producer_is_realview (const char *producer)
+/* Initialize the symbol SYM. */
+
+void
+initialize_symbol (struct symbol *sym)
{
- static const char *const arm_idents[] = {
- "ARM C Compiler, ADS",
- "Thumb C Compiler, ADS",
- "ARM C++ Compiler, ADS",
- "Thumb C++ Compiler, ADS",
- "ARM/Thumb C/C++ Compiler, RVCT",
- "ARM C/C++ Compiler, RVCT"
- };
- int i;
+ memset (sym, 0, sizeof (*sym));
+ SYMBOL_SECTION (sym) = -1;
+}
- if (producer == NULL)
- return 0;
+/* Allocate and initialize a new 'struct symbol' on OBJFILE's
+ obstack. */
- for (i = 0; i < ARRAY_SIZE (arm_idents); i++)
- if (strncmp (producer, arm_idents[i], strlen (arm_idents[i])) == 0)
- return 1;
+struct symbol *
+allocate_symbol (struct objfile *objfile)
+{
+ struct symbol *result;
- return 0;
+ result = OBSTACK_ZALLOC (&objfile->objfile_obstack, struct symbol);
+ SYMBOL_SECTION (result) = -1;
+
+ return result;
+}
+
+/* Allocate and initialize a new 'struct template_symbol' on OBJFILE's
+ obstack. */
+
+struct template_symbol *
+allocate_template_symbol (struct objfile *objfile)
+{
+ struct template_symbol *result;
+
+ result = OBSTACK_ZALLOC (&objfile->objfile_obstack, struct template_symbol);
+ SYMBOL_SECTION (&result->base) = -1;
+
+ return result;
}
+\f
+
void
_initialize_symtab (void)
{
+ initialize_ordinary_address_classes ();
+
add_info ("variables", variables_info, _("\
All global and static variable names, or those matching REGEXP."));
if (dbx_commands)
Valid values are \"ask\", \"all\", \"cancel\", and the default is \"all\"."),
NULL, NULL, &setlist, &showlist);
+ add_setshow_boolean_cmd ("basenames-may-differ", class_obscure,
+ &basenames_may_differ, _("\
+Set whether a source file may have multiple base names."), _("\
+Show whether a source file may have multiple base names."), _("\
+(A \"base name\" is the name of a file with the directory part removed.\n\
+Example: The base name of \"/home/user/hello.c\" is \"hello.c\".)\n\
+If set, GDB will canonicalize file names (e.g., expand symlinks)\n\
+before comparing them. Canonicalization is an expensive operation,\n\
+but it allows the same file be known by more than one base name.\n\
+If not set (the default), all source files are assumed to have just\n\
+one base name, and gdb will do file name comparisons more efficiently."),
+ NULL, NULL,
+ &setlist, &showlist);
+
+ add_setshow_boolean_cmd ("symtab-create", no_class, &symtab_create_debug,
+ _("Set debugging of symbol table creation."),
+ _("Show debugging of symbol table creation."), _("\
+When enabled, debugging messages are printed when building symbol tables."),
+ NULL,
+ NULL,
+ &setdebuglist, &showdebuglist);
+
observer_attach_executable_changed (symtab_observer_executable_changed);
}
projects / deliverable / binutils-gdb.git / blobdiff