/* Generic symbol file reading for the GNU debugger, GDB.
Copyright (C) 1990, 1991, 1992, 1993, 1994, 1995, 1996, 1997, 1998, 1999,
- 2000, 2001, 2002, 2003, 2004, 2005, 2006, 2007, 2008, 2009
+ 2000, 2001, 2002, 2003, 2004, 2005, 2006, 2007, 2008, 2009, 2010
Free Software Foundation, Inc.
Contributed by Cygnus Support, using pieces from other GDB modules.
static void add_symbol_file_command (char *, int);
-static void reread_separate_symbols (struct objfile *objfile);
-
-static void cashier_psymtab (struct partial_symtab *);
-
bfd *symfile_bfd_open (char *);
int get_section_index (struct objfile *, char *);
static void info_ext_lang_command (char *args, int from_tty);
-static char *find_separate_debug_file (struct objfile *objfile);
-
static void init_filename_language_table (void);
static void symfile_find_segment_sections (struct objfile *objfile);
return sap;
}
-
-/* Return a freshly allocated copy of ADDRS. The section names, if
- any, are also freshly allocated copies of those in ADDRS. */
-struct section_addr_info *
-copy_section_addr_info (struct section_addr_info *addrs)
-{
- struct section_addr_info *copy
- = alloc_section_addr_info (addrs->num_sections);
- int i;
-
- copy->num_sections = addrs->num_sections;
- for (i = 0; i < addrs->num_sections; i++)
- {
- copy->other[i].addr = addrs->other[i].addr;
- if (addrs->other[i].name)
- copy->other[i].name = xstrdup (addrs->other[i].name);
- else
- copy->other[i].name = NULL;
- copy->other[i].sectindex = addrs->other[i].sectindex;
- }
-
- return copy;
-}
-
-
-
/* Build (allocate and populate) a section_addr_info struct from
an existing section table. */
return sap;
}
+/* Create a section_addr_info from section offsets in OBJFILE. */
+
+struct section_addr_info *
+build_section_addr_info_from_objfile (const struct objfile *objfile)
+{
+ struct section_addr_info *sap;
+ int i;
+ struct bfd_section *sec;
+ int addr_bit = gdbarch_addr_bit (objfile->gdbarch);
+ CORE_ADDR mask = CORE_ADDR_MAX;
+
+ if (addr_bit < (sizeof (CORE_ADDR) * HOST_CHAR_BIT))
+ mask = ((CORE_ADDR) 1 << addr_bit) - 1;
+
+ sap = alloc_section_addr_info (objfile->num_sections);
+ for (i = 0, sec = objfile->obfd->sections;
+ i < objfile->num_sections;
+ i++, sec = sec->next)
+ {
+ gdb_assert (sec != NULL);
+ sap->other[i].addr = (bfd_get_section_vma (objfile->obfd, sec)
+ + objfile->section_offsets->offsets[i]) & mask;
+ sap->other[i].name = xstrdup (bfd_get_section_name (objfile->obfd, sec));
+ sap->other[i].sectindex = sec->index;
+ }
+ return sap;
+}
+
/* Free all memory allocated by build_section_addr_info_from_section_table. */
arg->lowest = start_addr + bfd_get_section_size (sect);
}
-/* Parse the user's idea of an offset for dynamic linking, into our idea
- of how to represent it for fast symbol reading. This is the default
- version of the sym_fns.sym_offsets function for symbol readers that
- don't need to do anything special. It allocates a section_offsets table
- for the objectfile OBJFILE and stuffs ADDR into all of the offsets. */
+/* Store struct section_addr_info as prepared (made relative and with SECTINDEX
+ filled-in) by addr_info_make_relative into SECTION_OFFSETS of NUM_SECTIONS
+ entries. */
void
-default_symfile_offsets (struct objfile *objfile,
- struct section_addr_info *addrs)
+relative_addr_info_to_section_offsets (struct section_offsets *section_offsets,
+ int num_sections,
+ struct section_addr_info *addrs)
{
int i;
- objfile->num_sections = bfd_count_sections (objfile->obfd);
- objfile->section_offsets = (struct section_offsets *)
- obstack_alloc (&objfile->objfile_obstack,
- SIZEOF_N_SECTION_OFFSETS (objfile->num_sections));
- memset (objfile->section_offsets, 0,
- SIZEOF_N_SECTION_OFFSETS (objfile->num_sections));
+ memset (section_offsets, 0, SIZEOF_N_SECTION_OFFSETS (num_sections));
- /* Now calculate offsets for section that were specified by the
- caller. */
+ /* Now calculate offsets for section that were specified by the caller. */
for (i = 0; i < addrs->num_sections && addrs->other[i].name; i++)
{
- struct other_sections *osp ;
+ struct other_sections *osp;
- osp = &addrs->other[i] ;
+ osp = &addrs->other[i];
if (osp->addr == 0)
continue;
/* Record all sections in offsets */
/* The section_offsets in the objfile are here filled in using
the BFD index. */
- (objfile->section_offsets)->offsets[osp->sectindex] = osp->addr;
+ section_offsets->offsets[osp->sectindex] = osp->addr;
+ }
+}
+
+/* Relativize absolute addresses in ADDRS into offsets based on ABFD. Fill-in
+ also SECTINDEXes there. */
+
+void
+addr_info_make_relative (struct section_addr_info *addrs, bfd *abfd)
+{
+ asection *lower_sect;
+ asection *sect;
+ CORE_ADDR lower_offset;
+ int i;
+
+ /* Find lowest loadable section to be used as starting point for
+ continguous sections. */
+ lower_sect = NULL;
+ bfd_map_over_sections (abfd, find_lowest_section, &lower_sect);
+ if (lower_sect == NULL)
+ {
+ warning (_("no loadable sections found in added symbol-file %s"),
+ bfd_get_filename (abfd));
+ lower_offset = 0;
+ }
+ else
+ lower_offset = bfd_section_vma (bfd_get_filename (abfd), lower_sect);
+
+ /* Calculate offsets for the loadable sections.
+ FIXME! Sections must be in order of increasing loadable section
+ so that contiguous sections can use the lower-offset!!!
+
+ Adjust offsets if the segments are not contiguous.
+ If the section is contiguous, its offset should be set to
+ the offset of the highest loadable section lower than it
+ (the loadable section directly below it in memory).
+ this_offset = lower_offset = lower_addr - lower_orig_addr */
+
+ for (i = 0; i < addrs->num_sections && addrs->other[i].name; i++)
+ {
+ if (addrs->other[i].addr != 0)
+ {
+ sect = bfd_get_section_by_name (abfd, addrs->other[i].name);
+ if (sect)
+ {
+ addrs->other[i].addr -= bfd_section_vma (abfd, sect);
+ lower_offset = addrs->other[i].addr;
+ /* This is the index used by BFD. */
+ addrs->other[i].sectindex = sect->index;
+ }
+ else
+ {
+ warning (_("section %s not found in %s"), addrs->other[i].name,
+ bfd_get_filename (abfd));
+ addrs->other[i].addr = 0;
+ }
+ }
+ else
+ addrs->other[i].addr = lower_offset;
}
+}
+
+/* Parse the user's idea of an offset for dynamic linking, into our idea
+ of how to represent it for fast symbol reading. This is the default
+ version of the sym_fns.sym_offsets function for symbol readers that
+ don't need to do anything special. It allocates a section_offsets table
+ for the objectfile OBJFILE and stuffs ADDR into all of the offsets. */
+
+void
+default_symfile_offsets (struct objfile *objfile,
+ struct section_addr_info *addrs)
+{
+ objfile->num_sections = bfd_count_sections (objfile->obfd);
+ objfile->section_offsets = (struct section_offsets *)
+ obstack_alloc (&objfile->objfile_obstack,
+ SIZEOF_N_SECTION_OFFSETS (objfile->num_sections));
+ relative_addr_info_to_section_offsets (objfile->section_offsets,
+ objfile->num_sections, addrs);
/* For relocatable files, all loadable sections will start at zero.
The zero is meaningless, so try to pick arbitrary addresses such
We no longer warn if the lowest section is not a text segment (as
happens for the PA64 port. */
- if (!mainline && addrs && addrs->other[0].name)
- {
- asection *lower_sect;
- asection *sect;
- CORE_ADDR lower_offset;
- int i;
-
- /* Find lowest loadable section to be used as starting point for
- continguous sections. FIXME!! won't work without call to find
- .text first, but this assumes text is lowest section. */
- lower_sect = bfd_get_section_by_name (objfile->obfd, ".text");
- if (lower_sect == NULL)
- bfd_map_over_sections (objfile->obfd, find_lowest_section,
- &lower_sect);
- if (lower_sect == NULL)
- {
- warning (_("no loadable sections found in added symbol-file %s"),
- objfile->name);
- lower_offset = 0;
- }
- else
- lower_offset = bfd_section_vma (objfile->obfd, lower_sect);
-
- /* Calculate offsets for the loadable sections.
- FIXME! Sections must be in order of increasing loadable section
- so that contiguous sections can use the lower-offset!!!
-
- Adjust offsets if the segments are not contiguous.
- If the section is contiguous, its offset should be set to
- the offset of the highest loadable section lower than it
- (the loadable section directly below it in memory).
- this_offset = lower_offset = lower_addr - lower_orig_addr */
-
- for (i = 0; i < addrs->num_sections && addrs->other[i].name; i++)
- {
- if (addrs->other[i].addr != 0)
- {
- sect = bfd_get_section_by_name (objfile->obfd,
- addrs->other[i].name);
- if (sect)
- {
- addrs->other[i].addr
- -= bfd_section_vma (objfile->obfd, sect);
- lower_offset = addrs->other[i].addr;
- /* This is the index used by BFD. */
- addrs->other[i].sectindex = sect->index ;
- }
- else
- {
- warning (_("section %s not found in %s"),
- addrs->other[i].name,
- objfile->name);
- addrs->other[i].addr = 0;
- }
- }
- else
- addrs->other[i].addr = lower_offset;
- }
- }
+ if (addrs && addrs->other[0].name)
+ addr_info_make_relative (addrs, objfile->obfd);
/* Initialize symbol reading routines for this objfile, allow complaints to
appear for this new file, and record how verbose to be, then do the
init_objfile_sect_indices (objfile);
}
- (*objfile->sf->sym_read) (objfile, mainline);
+ (*objfile->sf->sym_read) (objfile, add_flags);
/* Discard cleanups as symbol reading was successful. */
{
struct objfile *objfile;
struct partial_symtab *psymtab;
- char *debugfile = NULL;
- struct section_addr_info *orig_addrs = NULL;
struct cleanup *my_cleanups;
const char *name = bfd_get_filename (abfd);
const int from_tty = add_flags & SYMFILE_VERBOSE;
objfile = allocate_objfile (abfd, flags);
discard_cleanups (my_cleanups);
- if (addrs)
- {
- orig_addrs = copy_section_addr_info (addrs);
- make_cleanup_free_section_addr_info (orig_addrs);
- }
-
/* We either created a new mapped symbol table, mapped an existing
symbol table file which has not had initial symbol reading
performed, or need to read an unmapped symbol table. */
}
}
- /* If the file has its own symbol tables it has no separate debug info.
- `.dynsym'/`.symtab' go to MSYMBOLS, `.debug_info' goes to SYMTABS/PSYMTABS.
- `.gnu_debuglink' may no longer be present with `.note.gnu.build-id'. */
- if (objfile->psymtabs == NULL)
- debugfile = find_separate_debug_file (objfile);
- if (debugfile)
- {
- if (addrs != NULL)
- {
- objfile->separate_debug_objfile
- = symbol_file_add (debugfile, add_flags, orig_addrs, flags);
- }
- else
- {
- objfile->separate_debug_objfile
- = symbol_file_add (debugfile, add_flags, NULL, flags);
- }
- objfile->separate_debug_objfile->separate_debug_objfile_backlink
- = objfile;
-
- /* Put the separate debug object before the normal one, this is so that
- usage of the ALL_OBJFILES_SAFE macro will stay safe. */
- put_objfile_before (objfile->separate_debug_objfile, objfile);
-
- xfree (debugfile);
- }
-
if ((from_tty || info_verbose)
- && !objfile_has_partial_symbols (objfile)
- && !objfile_has_full_symbols (objfile))
+ && !objfile_has_symbols (objfile))
{
wrap_here ("");
printf_unfiltered (_("(no debugging symbols found)..."));
return (objfile);
}
+/* Add BFD as a separate debug file for OBJFILE. */
+
+void
+symbol_file_add_separate (bfd *bfd, int symfile_flags, struct objfile *objfile)
+{
+ struct objfile *new_objfile;
+ struct section_addr_info *sap;
+ struct cleanup *my_cleanup;
+
+ /* Create section_addr_info. We can't directly use offsets from OBJFILE
+ because sections of BFD may not match sections of OBJFILE and because
+ vma may have been modified by tools such as prelink. */
+ sap = build_section_addr_info_from_objfile (objfile);
+ my_cleanup = make_cleanup_free_section_addr_info (sap);
+
+ new_objfile = symbol_file_add_with_addrs_or_offsets
+ (bfd, symfile_flags,
+ sap, NULL, 0,
+ objfile->flags & (OBJF_REORDERED | OBJF_SHARED | OBJF_READNOW
+ | OBJF_USERLOADED));
+
+ do_cleanups (my_cleanup);
+
+ add_separate_debug_objfile (new_objfile, objfile);
+}
/* Process the symbol file ABFD, as either the main file or as a
dynamically loaded file.
printf_unfiltered (_("No symbol file now.\n"));
}
-struct build_id
- {
- size_t size;
- gdb_byte data[1];
- };
-
-/* Locate NT_GNU_BUILD_ID from ABFD and return its content. */
-
-static struct build_id *
-build_id_bfd_get (bfd *abfd)
-{
- struct build_id *retval;
-
- if (!bfd_check_format (abfd, bfd_object)
- || bfd_get_flavour (abfd) != bfd_target_elf_flavour
- || elf_tdata (abfd)->build_id == NULL)
- return NULL;
-
- retval = xmalloc (sizeof *retval - 1 + elf_tdata (abfd)->build_id_size);
- retval->size = elf_tdata (abfd)->build_id_size;
- memcpy (retval->data, elf_tdata (abfd)->build_id, retval->size);
-
- return retval;
-}
-
-/* Return if FILENAME has NT_GNU_BUILD_ID matching the CHECK value. */
-
-static int
-build_id_verify (const char *filename, struct build_id *check)
-{
- bfd *abfd;
- struct build_id *found = NULL;
- int retval = 0;
-
- /* We expect to be silent on the non-existing files. */
- if (remote_filename_p (filename))
- abfd = remote_bfd_open (filename, gnutarget);
- else
- abfd = bfd_openr (filename, gnutarget);
- if (abfd == NULL)
- return 0;
-
- found = build_id_bfd_get (abfd);
-
- if (found == NULL)
- warning (_("File \"%s\" has no build-id, file skipped"), filename);
- else if (found->size != check->size
- || memcmp (found->data, check->data, found->size) != 0)
- warning (_("File \"%s\" has a different build-id, file skipped"), filename);
- else
- retval = 1;
-
- if (!bfd_close (abfd))
- warning (_("cannot close \"%s\": %s"), filename,
- bfd_errmsg (bfd_get_error ()));
-
- xfree (found);
-
- return retval;
-}
-
-static char *
-build_id_to_debug_filename (struct build_id *build_id)
-{
- char *link, *s, *retval = NULL;
- gdb_byte *data = build_id->data;
- size_t size = build_id->size;
-
- /* DEBUG_FILE_DIRECTORY/.build-id/ab/cdef */
- link = xmalloc (strlen (debug_file_directory) + (sizeof "/.build-id/" - 1) + 1
- + 2 * size + (sizeof ".debug" - 1) + 1);
- s = link + sprintf (link, "%s/.build-id/", debug_file_directory);
- if (size > 0)
- {
- size--;
- s += sprintf (s, "%02x", (unsigned) *data++);
- }
- if (size > 0)
- *s++ = '/';
- while (size-- > 0)
- s += sprintf (s, "%02x", (unsigned) *data++);
- strcpy (s, ".debug");
-
- /* lrealpath() is expensive even for the usually non-existent files. */
- if (access (link, F_OK) == 0)
- retval = lrealpath (link);
- xfree (link);
-
- if (retval != NULL && !build_id_verify (retval, build_id))
- {
- xfree (retval);
- retval = NULL;
- }
-
- return retval;
-}
-
static char *
get_debug_link_info (struct objfile *objfile, unsigned long *crc32_out)
{
}
static int
-separate_debug_file_exists (const char *name, unsigned long crc)
+separate_debug_file_exists (const char *name, unsigned long crc,
+ struct objfile *parent_objfile)
{
unsigned long file_crc = 0;
bfd *abfd;
gdb_byte buffer[8*1024];
int count;
+ struct stat parent_stat, abfd_stat;
- if (remote_filename_p (name))
- abfd = remote_bfd_open (name, gnutarget);
- else
- abfd = bfd_openr (name, gnutarget);
+ /* Find a separate debug info file as if symbols would be present in
+ PARENT_OBJFILE itself this function would not be called. .gnu_debuglink
+ section can contain just the basename of PARENT_OBJFILE without any
+ ".debug" suffix as "/usr/lib/debug/path/to/file" is a separate tree where
+ the separate debug infos with the same basename can exist. */
+
+ if (strcmp (name, parent_objfile->name) == 0)
+ return 0;
+
+ abfd = bfd_open_maybe_remote (name);
if (!abfd)
return 0;
+ /* Verify symlinks were not the cause of strcmp name difference above.
+
+ Some operating systems, e.g. Windows, do not provide a meaningful
+ st_ino; they always set it to zero. (Windows does provide a
+ meaningful st_dev.) Do not indicate a duplicate library in that
+ case. While there is no guarantee that a system that provides
+ meaningful inode numbers will never set st_ino to zero, this is
+ merely an optimization, so we do not need to worry about false
+ negatives. */
+
+ if (bfd_stat (abfd, &abfd_stat) == 0
+ && bfd_stat (parent_objfile->obfd, &parent_stat) == 0
+ && abfd_stat.st_dev == parent_stat.st_dev
+ && abfd_stat.st_ino == parent_stat.st_ino
+ && abfd_stat.st_ino != 0)
+ {
+ bfd_close (abfd);
+ return 0;
+ }
+
while ((count = bfd_bread (buffer, sizeof (buffer), abfd)) > 0)
file_crc = gnu_debuglink_crc32 (file_crc, buffer, count);
bfd_close (abfd);
- return crc == file_crc;
+ if (crc != file_crc)
+ {
+ warning (_("the debug information found in \"%s\""
+ " does not match \"%s\" (CRC mismatch).\n"),
+ name, parent_objfile->name);
+ return 0;
+ }
+
+ return 1;
}
char *debug_file_directory = NULL;
#define DEBUG_SUBDIRECTORY ".debug"
#endif
-static char *
-find_separate_debug_file (struct objfile *objfile)
+char *
+find_separate_debug_file_by_debuglink (struct objfile *objfile)
{
asection *sect;
- char *basename;
- char *dir;
- char *debugfile;
- char *name_copy;
- char *canon_name;
+ char *basename, *name_copy, *debugdir;
+ char *dir = NULL;
+ char *debugfile = NULL;
+ char *canon_name = NULL;
bfd_size_type debuglink_size;
unsigned long crc32;
int i;
- struct build_id *build_id;
-
- build_id = build_id_bfd_get (objfile->obfd);
- if (build_id != NULL)
- {
- char *build_id_name;
-
- build_id_name = build_id_to_debug_filename (build_id);
- xfree (build_id);
- /* Prevent looping on a stripped .debug file. */
- if (build_id_name != NULL && strcmp (build_id_name, objfile->name) == 0)
- {
- warning (_("\"%s\": separate debug info file has no debug info"),
- build_id_name);
- xfree (build_id_name);
- }
- else if (build_id_name != NULL)
- return build_id_name;
- }
basename = get_debug_link_info (objfile, &crc32);
if (basename == NULL)
- return NULL;
+ /* There's no separate debug info, hence there's no way we could
+ load it => no warning. */
+ goto cleanup_return_debugfile;
dir = xstrdup (objfile->name);
if (canon_name && strlen (canon_name) > i)
i = strlen (canon_name);
- debugfile = alloca (strlen (debug_file_directory) + 1
- + i
- + strlen (DEBUG_SUBDIRECTORY)
- + strlen ("/")
- + strlen (basename)
- + 1);
+ debugfile = xmalloc (strlen (debug_file_directory) + 1
+ + i
+ + strlen (DEBUG_SUBDIRECTORY)
+ + strlen ("/")
+ + strlen (basename)
+ + 1);
/* First try in the same directory as the original file. */
strcpy (debugfile, dir);
strcat (debugfile, basename);
- if (separate_debug_file_exists (debugfile, crc32))
- {
- xfree (basename);
- xfree (dir);
- xfree (canon_name);
- return xstrdup (debugfile);
- }
+ if (separate_debug_file_exists (debugfile, crc32, objfile))
+ goto cleanup_return_debugfile;
/* Then try in the subdirectory named DEBUG_SUBDIRECTORY. */
strcpy (debugfile, dir);
strcat (debugfile, "/");
strcat (debugfile, basename);
- if (separate_debug_file_exists (debugfile, crc32))
- {
- xfree (basename);
- xfree (dir);
- xfree (canon_name);
- return xstrdup (debugfile);
- }
+ if (separate_debug_file_exists (debugfile, crc32, objfile))
+ goto cleanup_return_debugfile;
- /* Then try in the global debugfile directory. */
- strcpy (debugfile, debug_file_directory);
- strcat (debugfile, "/");
- strcat (debugfile, dir);
- strcat (debugfile, basename);
+ /* Then try in the global debugfile directories.
+
+ Keep backward compatibility so that DEBUG_FILE_DIRECTORY being "" will
+ cause "/..." lookups. */
- if (separate_debug_file_exists (debugfile, crc32))
+ debugdir = debug_file_directory;
+ do
{
- xfree (basename);
- xfree (dir);
- xfree (canon_name);
- return xstrdup (debugfile);
- }
+ char *debugdir_end;
- /* If the file is in the sysroot, try using its base path in the
- global debugfile directory. */
- if (canon_name
- && strncmp (canon_name, gdb_sysroot, strlen (gdb_sysroot)) == 0
- && IS_DIR_SEPARATOR (canon_name[strlen (gdb_sysroot)]))
- {
- strcpy (debugfile, debug_file_directory);
- strcat (debugfile, canon_name + strlen (gdb_sysroot));
+ while (*debugdir == DIRNAME_SEPARATOR)
+ debugdir++;
+
+ debugdir_end = strchr (debugdir, DIRNAME_SEPARATOR);
+ if (debugdir_end == NULL)
+ debugdir_end = &debugdir[strlen (debugdir)];
+
+ memcpy (debugfile, debugdir, debugdir_end - debugdir);
+ debugfile[debugdir_end - debugdir] = 0;
strcat (debugfile, "/");
+ strcat (debugfile, dir);
strcat (debugfile, basename);
- if (separate_debug_file_exists (debugfile, crc32))
+ if (separate_debug_file_exists (debugfile, crc32, objfile))
+ goto cleanup_return_debugfile;
+
+ /* If the file is in the sysroot, try using its base path in the
+ global debugfile directory. */
+ if (canon_name
+ && strncmp (canon_name, gdb_sysroot, strlen (gdb_sysroot)) == 0
+ && IS_DIR_SEPARATOR (canon_name[strlen (gdb_sysroot)]))
{
- xfree (canon_name);
- xfree (basename);
- xfree (dir);
- return xstrdup (debugfile);
+ memcpy (debugfile, debugdir, debugdir_end - debugdir);
+ debugfile[debugdir_end - debugdir] = 0;
+ strcat (debugfile, canon_name + strlen (gdb_sysroot));
+ strcat (debugfile, "/");
+ strcat (debugfile, basename);
+
+ if (separate_debug_file_exists (debugfile, crc32, objfile))
+ goto cleanup_return_debugfile;
}
+
+ debugdir = debugdir_end;
}
+ while (*debugdir != 0);
- if (canon_name)
- xfree (canon_name);
+ xfree (debugfile);
+ debugfile = NULL;
+cleanup_return_debugfile:
+ xfree (canon_name);
xfree (basename);
xfree (dir);
- return NULL;
+ return debugfile;
}
}
}
+/* If NAME is a remote name open the file using remote protocol, otherwise
+ open it normally. */
+
+bfd *
+bfd_open_maybe_remote (const char *name)
+{
+ if (remote_filename_p (name))
+ return remote_bfd_open (name, gnutarget);
+ else
+ return bfd_openr (name, gnutarget);
+}
+
+
/* Open the file specified by NAME and hand it off to BFD for
preliminary analysis. Return a newly initialized bfd *, which
includes a newly malloc'd` copy of NAME (tilde-expanded and made
for (objfile = object_files; objfile; objfile = objfile->next)
{
- if (objfile->obfd)
- {
+ /* solib-sunos.c creates one objfile with obfd. */
+ if (objfile->obfd == NULL)
+ continue;
+
+ /* Separate debug objfiles are handled in the main objfile. */
+ if (objfile->separate_debug_objfile_backlink)
+ continue;
+
#ifdef DEPRECATED_IBM6000_TARGET
- /* If this object is from a shared library, then you should
- stat on the library name, not member name. */
+ /* If this object is from a shared library, then you should
+ stat on the library name, not member name. */
- if (objfile->obfd->my_archive)
- res = stat (objfile->obfd->my_archive->filename, &new_statbuf);
- else
+ if (objfile->obfd->my_archive)
+ res = stat (objfile->obfd->my_archive->filename, &new_statbuf);
+ else
#endif
- res = stat (objfile->name, &new_statbuf);
- if (res != 0)
+ res = stat (objfile->name, &new_statbuf);
+ if (res != 0)
+ {
+ /* FIXME, should use print_sys_errmsg but it's not filtered. */
+ printf_unfiltered (_("`%s' has disappeared; keeping its symbols.\n"),
+ objfile->name);
+ continue;
+ }
+ new_modtime = new_statbuf.st_mtime;
+ if (new_modtime != objfile->mtime)
+ {
+ struct cleanup *old_cleanups;
+ struct section_offsets *offsets;
+ int num_offsets;
+ char *obfd_filename;
+
+ printf_unfiltered (_("`%s' has changed; re-reading symbols.\n"),
+ objfile->name);
+
+ /* There are various functions like symbol_file_add,
+ symfile_bfd_open, syms_from_objfile, etc., which might
+ appear to do what we want. But they have various other
+ effects which we *don't* want. So we just do stuff
+ ourselves. We don't worry about mapped files (for one thing,
+ any mapped file will be out of date). */
+
+ /* If we get an error, blow away this objfile (not sure if
+ that is the correct response for things like shared
+ libraries). */
+ old_cleanups = make_cleanup_free_objfile (objfile);
+ /* We need to do this whenever any symbols go away. */
+ make_cleanup (clear_symtab_users_cleanup, 0 /*ignore*/);
+
+ if (exec_bfd != NULL && strcmp (bfd_get_filename (objfile->obfd),
+ bfd_get_filename (exec_bfd)) == 0)
+ {
+ /* Reload EXEC_BFD without asking anything. */
+
+ exec_file_attach (bfd_get_filename (objfile->obfd), 0);
+ }
+
+ /* Clean up any state BFD has sitting around. We don't need
+ to close the descriptor but BFD lacks a way of closing the
+ BFD without closing the descriptor. */
+ obfd_filename = bfd_get_filename (objfile->obfd);
+ if (!bfd_close (objfile->obfd))
+ error (_("Can't close BFD for %s: %s"), objfile->name,
+ bfd_errmsg (bfd_get_error ()));
+ objfile->obfd = bfd_open_maybe_remote (obfd_filename);
+ if (objfile->obfd == NULL)
+ error (_("Can't open %s to read symbols."), objfile->name);
+ else
+ objfile->obfd = gdb_bfd_ref (objfile->obfd);
+ /* bfd_openr sets cacheable to true, which is what we want. */
+ if (!bfd_check_format (objfile->obfd, bfd_object))
+ error (_("Can't read symbols from %s: %s."), objfile->name,
+ bfd_errmsg (bfd_get_error ()));
+
+ /* Save the offsets, we will nuke them with the rest of the
+ objfile_obstack. */
+ num_offsets = objfile->num_sections;
+ offsets = ((struct section_offsets *)
+ alloca (SIZEOF_N_SECTION_OFFSETS (num_offsets)));
+ memcpy (offsets, objfile->section_offsets,
+ SIZEOF_N_SECTION_OFFSETS (num_offsets));
+
+ /* Remove any references to this objfile in the global
+ value lists. */
+ preserve_values (objfile);
+
+ /* Nuke all the state that we will re-read. Much of the following
+ code which sets things to NULL really is necessary to tell
+ other parts of GDB that there is nothing currently there.
+
+ Try to keep the freeing order compatible with free_objfile. */
+
+ if (objfile->sf != NULL)
+ {
+ (*objfile->sf->sym_finish) (objfile);
+ }
+
+ clear_objfile_data (objfile);
+
+ /* Free the separate debug objfiles. It will be
+ automatically recreated by sym_read. */
+ free_objfile_separate_debug (objfile);
+
+ /* FIXME: Do we have to free a whole linked list, or is this
+ enough? */
+ if (objfile->global_psymbols.list)
+ xfree (objfile->global_psymbols.list);
+ memset (&objfile->global_psymbols, 0,
+ sizeof (objfile->global_psymbols));
+ if (objfile->static_psymbols.list)
+ xfree (objfile->static_psymbols.list);
+ memset (&objfile->static_psymbols, 0,
+ sizeof (objfile->static_psymbols));
+
+ /* Free the obstacks for non-reusable objfiles */
+ bcache_xfree (objfile->psymbol_cache);
+ objfile->psymbol_cache = bcache_xmalloc ();
+ bcache_xfree (objfile->macro_cache);
+ objfile->macro_cache = bcache_xmalloc ();
+ bcache_xfree (objfile->filename_cache);
+ objfile->filename_cache = bcache_xmalloc ();
+ if (objfile->demangled_names_hash != NULL)
{
- /* FIXME, should use print_sys_errmsg but it's not filtered. */
- printf_unfiltered (_("`%s' has disappeared; keeping its symbols.\n"),
- objfile->name);
- continue;
+ htab_delete (objfile->demangled_names_hash);
+ objfile->demangled_names_hash = NULL;
}
- new_modtime = new_statbuf.st_mtime;
- if (new_modtime != objfile->mtime)
+ obstack_free (&objfile->objfile_obstack, 0);
+ objfile->sections = NULL;
+ objfile->symtabs = NULL;
+ objfile->psymtabs = NULL;
+ objfile->psymtabs_addrmap = NULL;
+ objfile->free_psymtabs = NULL;
+ objfile->cp_namespace_symtab = NULL;
+ objfile->msymbols = NULL;
+ objfile->deprecated_sym_private = NULL;
+ objfile->minimal_symbol_count = 0;
+ memset (&objfile->msymbol_hash, 0,
+ sizeof (objfile->msymbol_hash));
+ memset (&objfile->msymbol_demangled_hash, 0,
+ sizeof (objfile->msymbol_demangled_hash));
+
+ objfile->psymbol_cache = bcache_xmalloc ();
+ objfile->macro_cache = bcache_xmalloc ();
+ objfile->filename_cache = bcache_xmalloc ();
+ /* obstack_init also initializes the obstack so it is
+ empty. We could use obstack_specify_allocation but
+ gdb_obstack.h specifies the alloc/dealloc
+ functions. */
+ obstack_init (&objfile->objfile_obstack);
+ if (build_objfile_section_table (objfile))
{
- struct cleanup *old_cleanups;
- struct section_offsets *offsets;
- int num_offsets;
- char *obfd_filename;
-
- printf_unfiltered (_("`%s' has changed; re-reading symbols.\n"),
- objfile->name);
-
- /* There are various functions like symbol_file_add,
- symfile_bfd_open, syms_from_objfile, etc., which might
- appear to do what we want. But they have various other
- effects which we *don't* want. So we just do stuff
- ourselves. We don't worry about mapped files (for one thing,
- any mapped file will be out of date). */
-
- /* If we get an error, blow away this objfile (not sure if
- that is the correct response for things like shared
- libraries). */
- old_cleanups = make_cleanup_free_objfile (objfile);
- /* We need to do this whenever any symbols go away. */
- make_cleanup (clear_symtab_users_cleanup, 0 /*ignore*/);
-
- if (exec_bfd != NULL && strcmp (bfd_get_filename (objfile->obfd),
- bfd_get_filename (exec_bfd)) == 0)
- {
- /* Reload EXEC_BFD without asking anything. */
-
- exec_file_attach (bfd_get_filename (objfile->obfd), 0);
- }
-
- /* Clean up any state BFD has sitting around. We don't need
- to close the descriptor but BFD lacks a way of closing the
- BFD without closing the descriptor. */
- obfd_filename = bfd_get_filename (objfile->obfd);
- if (!bfd_close (objfile->obfd))
- error (_("Can't close BFD for %s: %s"), objfile->name,
- bfd_errmsg (bfd_get_error ()));
- if (remote_filename_p (obfd_filename))
- objfile->obfd = remote_bfd_open (obfd_filename, gnutarget);
- else
- objfile->obfd = bfd_openr (obfd_filename, gnutarget);
- if (objfile->obfd == NULL)
- error (_("Can't open %s to read symbols."), objfile->name);
- else
- objfile->obfd = gdb_bfd_ref (objfile->obfd);
- /* bfd_openr sets cacheable to true, which is what we want. */
- if (!bfd_check_format (objfile->obfd, bfd_object))
- error (_("Can't read symbols from %s: %s."), objfile->name,
- bfd_errmsg (bfd_get_error ()));
-
- /* Save the offsets, we will nuke them with the rest of the
- objfile_obstack. */
- num_offsets = objfile->num_sections;
- offsets = ((struct section_offsets *)
- alloca (SIZEOF_N_SECTION_OFFSETS (num_offsets)));
- memcpy (offsets, objfile->section_offsets,
- SIZEOF_N_SECTION_OFFSETS (num_offsets));
-
- /* Remove any references to this objfile in the global
- value lists. */
- preserve_values (objfile);
-
- /* Nuke all the state that we will re-read. Much of the following
- code which sets things to NULL really is necessary to tell
- other parts of GDB that there is nothing currently there.
-
- Try to keep the freeing order compatible with free_objfile. */
-
- if (objfile->sf != NULL)
- {
- (*objfile->sf->sym_finish) (objfile);
- }
-
- clear_objfile_data (objfile);
-
- /* FIXME: Do we have to free a whole linked list, or is this
- enough? */
- if (objfile->global_psymbols.list)
- xfree (objfile->global_psymbols.list);
- memset (&objfile->global_psymbols, 0,
- sizeof (objfile->global_psymbols));
- if (objfile->static_psymbols.list)
- xfree (objfile->static_psymbols.list);
- memset (&objfile->static_psymbols, 0,
- sizeof (objfile->static_psymbols));
-
- /* Free the obstacks for non-reusable objfiles */
- bcache_xfree (objfile->psymbol_cache);
- objfile->psymbol_cache = bcache_xmalloc ();
- bcache_xfree (objfile->macro_cache);
- objfile->macro_cache = bcache_xmalloc ();
- if (objfile->demangled_names_hash != NULL)
- {
- htab_delete (objfile->demangled_names_hash);
- objfile->demangled_names_hash = NULL;
- }
- obstack_free (&objfile->objfile_obstack, 0);
- objfile->sections = NULL;
- objfile->symtabs = NULL;
- objfile->psymtabs = NULL;
- objfile->psymtabs_addrmap = NULL;
- objfile->free_psymtabs = NULL;
- objfile->cp_namespace_symtab = NULL;
- objfile->msymbols = NULL;
- objfile->deprecated_sym_private = NULL;
- objfile->minimal_symbol_count = 0;
- memset (&objfile->msymbol_hash, 0,
- sizeof (objfile->msymbol_hash));
- memset (&objfile->msymbol_demangled_hash, 0,
- sizeof (objfile->msymbol_demangled_hash));
-
- objfile->psymbol_cache = bcache_xmalloc ();
- objfile->macro_cache = bcache_xmalloc ();
- /* obstack_init also initializes the obstack so it is
- empty. We could use obstack_specify_allocation but
- gdb_obstack.h specifies the alloc/dealloc
- functions. */
- obstack_init (&objfile->objfile_obstack);
- if (build_objfile_section_table (objfile))
- {
- error (_("Can't find the file sections in `%s': %s"),
- objfile->name, bfd_errmsg (bfd_get_error ()));
- }
- terminate_minimal_symbol_table (objfile);
-
- /* We use the same section offsets as from last time. I'm not
- sure whether that is always correct for shared libraries. */
- objfile->section_offsets = (struct section_offsets *)
- obstack_alloc (&objfile->objfile_obstack,
- SIZEOF_N_SECTION_OFFSETS (num_offsets));
- memcpy (objfile->section_offsets, offsets,
- SIZEOF_N_SECTION_OFFSETS (num_offsets));
- objfile->num_sections = num_offsets;
-
- /* What the hell is sym_new_init for, anyway? The concept of
- distinguishing between the main file and additional files
- in this way seems rather dubious. */
- if (objfile == symfile_objfile)
- {
- (*objfile->sf->sym_new_init) (objfile);
- }
-
- (*objfile->sf->sym_init) (objfile);
- clear_complaints (&symfile_complaints, 1, 1);
- /* The "mainline" parameter is a hideous hack; I think leaving it
- zero is OK since dbxread.c also does what it needs to do if
- objfile->global_psymbols.size is 0. */
- (*objfile->sf->sym_read) (objfile, 0);
- if (!objfile_has_partial_symbols (objfile)
- && !objfile_has_full_symbols (objfile))
- {
- wrap_here ("");
- printf_unfiltered (_("(no debugging symbols found)\n"));
- wrap_here ("");
- }
-
- /* We're done reading the symbol file; finish off complaints. */
- clear_complaints (&symfile_complaints, 0, 1);
-
- /* Getting new symbols may change our opinion about what is
- frameless. */
-
- reinit_frame_cache ();
-
- /* Discard cleanups as symbol reading was successful. */
- discard_cleanups (old_cleanups);
-
- /* If the mtime has changed between the time we set new_modtime
- and now, we *want* this to be out of date, so don't call stat
- again now. */
- objfile->mtime = new_modtime;
- reread_one = 1;
- reread_separate_symbols (objfile);
- init_entry_point_info (objfile);
+ error (_("Can't find the file sections in `%s': %s"),
+ objfile->name, bfd_errmsg (bfd_get_error ()));
}
+ terminate_minimal_symbol_table (objfile);
+
+ /* We use the same section offsets as from last time. I'm not
+ sure whether that is always correct for shared libraries. */
+ objfile->section_offsets = (struct section_offsets *)
+ obstack_alloc (&objfile->objfile_obstack,
+ SIZEOF_N_SECTION_OFFSETS (num_offsets));
+ memcpy (objfile->section_offsets, offsets,
+ SIZEOF_N_SECTION_OFFSETS (num_offsets));
+ objfile->num_sections = num_offsets;
+
+ /* What the hell is sym_new_init for, anyway? The concept of
+ distinguishing between the main file and additional files
+ in this way seems rather dubious. */
+ if (objfile == symfile_objfile)
+ {
+ (*objfile->sf->sym_new_init) (objfile);
+ }
+
+ (*objfile->sf->sym_init) (objfile);
+ clear_complaints (&symfile_complaints, 1, 1);
+ /* Do not set flags as this is safe and we don't want to be
+ verbose. */
+ (*objfile->sf->sym_read) (objfile, 0);
+ if (!objfile_has_symbols (objfile))
+ {
+ wrap_here ("");
+ printf_unfiltered (_("(no debugging symbols found)\n"));
+ wrap_here ("");
+ }
+
+ /* We're done reading the symbol file; finish off complaints. */
+ clear_complaints (&symfile_complaints, 0, 1);
+
+ /* Getting new symbols may change our opinion about what is
+ frameless. */
+
+ reinit_frame_cache ();
+
+ /* Discard cleanups as symbol reading was successful. */
+ discard_cleanups (old_cleanups);
+
+ /* If the mtime has changed between the time we set new_modtime
+ and now, we *want* this to be out of date, so don't call stat
+ again now. */
+ objfile->mtime = new_modtime;
+ reread_one = 1;
+ init_entry_point_info (objfile);
}
}
observer_notify_executable_changed ();
}
}
-
-
-/* Handle separate debug info for OBJFILE, which has just been
- re-read:
- - If we had separate debug info before, but now we don't, get rid
- of the separated objfile.
- - If we didn't have separated debug info before, but now we do,
- read in the new separated debug info file.
- - If the debug link points to a different file, toss the old one
- and read the new one.
- This function does *not* handle the case where objfile is still
- using the same separate debug info file, but that file's timestamp
- has changed. That case should be handled by the loop in
- reread_symbols already. */
-static void
-reread_separate_symbols (struct objfile *objfile)
-{
- char *debug_file;
- unsigned long crc32;
-
- /* Does the updated objfile's debug info live in a
- separate file? */
- debug_file = find_separate_debug_file (objfile);
-
- if (objfile->separate_debug_objfile)
- {
- /* There are two cases where we need to get rid of
- the old separated debug info objfile:
- - if the new primary objfile doesn't have
- separated debug info, or
- - if the new primary objfile has separate debug
- info, but it's under a different filename.
-
- If the old and new objfiles both have separate
- debug info, under the same filename, then we're
- okay --- if the separated file's contents have
- changed, we will have caught that when we
- visited it in this function's outermost
- loop. */
- if (! debug_file
- || strcmp (debug_file, objfile->separate_debug_objfile->name) != 0)
- free_objfile (objfile->separate_debug_objfile);
- }
-
- /* If the new objfile has separate debug info, and we
- haven't loaded it already, do so now. */
- if (debug_file
- && ! objfile->separate_debug_objfile)
- {
- /* Use the same section offset table as objfile itself.
- Preserve the flags from objfile that make sense. */
- objfile->separate_debug_objfile
- = (symbol_file_add_with_addrs_or_offsets
- (symfile_bfd_open (debug_file),
- info_verbose ? SYMFILE_VERBOSE : 0,
- 0, /* No addr table. */
- objfile->section_offsets, objfile->num_sections,
- objfile->flags & (OBJF_REORDERED | OBJF_SHARED | OBJF_READNOW
- | OBJF_USERLOADED)));
- objfile->separate_debug_objfile->separate_debug_objfile_backlink
- = objfile;
- }
- if (debug_file)
- xfree (debug_file);
-}
-
-
\f
symtab->dirname
symtab->free_code
symtab->free_ptr
- possibly free_named_symtabs (symtab->filename);
*/
struct symtab *
symtab = (struct symtab *)
obstack_alloc (&objfile->objfile_obstack, sizeof (struct symtab));
memset (symtab, 0, sizeof (*symtab));
- symtab->filename = obsavestring (filename, strlen (filename),
- &objfile->objfile_obstack);
+ symtab->filename = (char *) bcache (filename, strlen (filename) + 1,
+ objfile->filename_cache);
symtab->fullname = NULL;
symtab->language = deduce_language_from_filename (filename);
- symtab->debugformat = obsavestring ("unknown", 7,
- &objfile->objfile_obstack);
+ symtab->debugformat = "unknown";
/* Hook it to the objfile it comes from */
}
struct partial_symtab *
-allocate_psymtab (char *filename, struct objfile *objfile)
+allocate_psymtab (const char *filename, struct objfile *objfile)
{
struct partial_symtab *psymtab;
sizeof (struct partial_symtab));
memset (psymtab, 0, sizeof (struct partial_symtab));
- psymtab->filename = obsavestring (filename, strlen (filename),
- &objfile->objfile_obstack);
+ psymtab->filename = (char *) bcache (filename, strlen (filename) + 1,
+ objfile->filename_cache);
psymtab->symtab = NULL;
/* Prepend it to the psymtab list for the objfile it belongs to.
clear_displays ();
breakpoint_re_set ();
- set_default_breakpoint (0, 0, 0, 0);
+ set_default_breakpoint (0, NULL, 0, 0, 0);
clear_pc_function_cache ();
observer_notify_new_objfile (NULL);
{
clear_symtab_users ();
}
-
-/* clear_symtab_users_once:
-
- This function is run after symbol reading, or from a cleanup.
- If an old symbol table was obsoleted, the old symbol table
- has been blown away, but the other GDB data structures that may
- reference it have not yet been cleared or re-directed. (The old
- symtab was zapped, and the cleanup queued, in free_named_symtab()
- below.)
-
- This function can be queued N times as a cleanup, or called
- directly; it will do all the work the first time, and then will be a
- no-op until the next time it is queued. This works by bumping a
- counter at queueing time. Much later when the cleanup is run, or at
- the end of symbol processing (in case the cleanup is discarded), if
- the queued count is greater than the "done-count", we do the work
- and set the done-count to the queued count. If the queued count is
- less than or equal to the done-count, we just ignore the call. This
- is needed because reading a single .o file will often replace many
- symtabs (one per .h file, for example), and we don't want to reset
- the breakpoints N times in the user's face.
-
- The reason we both queue a cleanup, and call it directly after symbol
- reading, is because the cleanup protects us in case of errors, but is
- discarded if symbol reading is successful. */
-
-#if 0
-/* FIXME: As free_named_symtabs is currently a big noop this function
- is no longer needed. */
-static void clear_symtab_users_once (void);
-
-static int clear_symtab_users_queued;
-static int clear_symtab_users_done;
-
-static void
-clear_symtab_users_once (void)
-{
- /* Enforce once-per-`do_cleanups'-semantics */
- if (clear_symtab_users_queued <= clear_symtab_users_done)
- return;
- clear_symtab_users_done = clear_symtab_users_queued;
-
- clear_symtab_users ();
-}
-#endif
-
-/* Delete the specified psymtab, and any others that reference it. */
-
-static void
-cashier_psymtab (struct partial_symtab *pst)
-{
- struct partial_symtab *ps, *pprev = NULL;
- int i;
-
- /* Find its previous psymtab in the chain */
- for (ps = pst->objfile->psymtabs; ps; ps = ps->next)
- {
- if (ps == pst)
- break;
- pprev = ps;
- }
-
- if (ps)
- {
- /* Unhook it from the chain. */
- if (ps == pst->objfile->psymtabs)
- pst->objfile->psymtabs = ps->next;
- else
- pprev->next = ps->next;
-
- /* FIXME, we can't conveniently deallocate the entries in the
- partial_symbol lists (global_psymbols/static_psymbols) that
- this psymtab points to. These just take up space until all
- the psymtabs are reclaimed. Ditto the dependencies list and
- filename, which are all in the objfile_obstack. */
-
- /* We need to cashier any psymtab that has this one as a dependency... */
- again:
- for (ps = pst->objfile->psymtabs; ps; ps = ps->next)
- {
- for (i = 0; i < ps->number_of_dependencies; i++)
- {
- if (ps->dependencies[i] == pst)
- {
- cashier_psymtab (ps);
- goto again; /* Must restart, chain has been munged. */
- }
- }
- }
- }
-}
-
-/* If a symtab or psymtab for filename NAME is found, free it along
- with any dependent breakpoints, displays, etc.
- Used when loading new versions of object modules with the "add-file"
- command. This is only called on the top-level symtab or psymtab's name;
- it is not called for subsidiary files such as .h files.
-
- Return value is 1 if we blew away the environment, 0 if not.
- FIXME. The return value appears to never be used.
-
- FIXME. I think this is not the best way to do this. We should
- work on being gentler to the environment while still cleaning up
- all stray pointers into the freed symtab. */
-
-int
-free_named_symtabs (char *name)
-{
-#if 0
- /* FIXME: With the new method of each objfile having it's own
- psymtab list, this function needs serious rethinking. In particular,
- why was it ever necessary to toss psymtabs with specific compilation
- unit filenames, as opposed to all psymtabs from a particular symbol
- file? -- fnf
- Well, the answer is that some systems permit reloading of particular
- compilation units. We want to blow away any old info about these
- compilation units, regardless of which objfiles they arrived in. --gnu. */
-
- struct symtab *s;
- struct symtab *prev;
- struct partial_symtab *ps;
- struct blockvector *bv;
- int blewit = 0;
-
- /* We only wack things if the symbol-reload switch is set. */
- if (!symbol_reloading)
- return 0;
-
- /* Some symbol formats have trouble providing file names... */
- if (name == 0 || *name == '\0')
- return 0;
-
- /* Look for a psymtab with the specified name. */
-
-again2:
- for (ps = partial_symtab_list; ps; ps = ps->next)
- {
- if (strcmp (name, ps->filename) == 0)
- {
- cashier_psymtab (ps); /* Blow it away...and its little dog, too. */
- goto again2; /* Must restart, chain has been munged */
- }
- }
-
- /* Look for a symtab with the specified name. */
-
- for (s = symtab_list; s; s = s->next)
- {
- if (strcmp (name, s->filename) == 0)
- break;
- prev = s;
- }
-
- if (s)
- {
- if (s == symtab_list)
- symtab_list = s->next;
- else
- prev->next = s->next;
-
- /* For now, queue a delete for all breakpoints, displays, etc., whether
- or not they depend on the symtab being freed. This should be
- changed so that only those data structures affected are deleted. */
-
- /* But don't delete anything if the symtab is empty.
- This test is necessary due to a bug in "dbxread.c" that
- causes empty symtabs to be created for N_SO symbols that
- contain the pathname of the object file. (This problem
- has been fixed in GDB 3.9x). */
-
- bv = BLOCKVECTOR (s);
- if (BLOCKVECTOR_NBLOCKS (bv) > 2
- || BLOCK_NSYMS (BLOCKVECTOR_BLOCK (bv, GLOBAL_BLOCK))
- || BLOCK_NSYMS (BLOCKVECTOR_BLOCK (bv, STATIC_BLOCK)))
- {
- complaint (&symfile_complaints, _("Replacing old symbols for `%s'"),
- name);
- clear_symtab_users_queued++;
- make_cleanup (clear_symtab_users_once, 0);
- blewit = 1;
- }
- else
- complaint (&symfile_complaints, _("Empty symbol table found for `%s'"),
- name);
-
- free_symtab (s);
- }
- else
- {
- /* It is still possible that some breakpoints will be affected
- even though no symtab was found, since the file might have
- been compiled without debugging, and hence not be associated
- with a symtab. In order to handle this correctly, we would need
- to keep a list of text address ranges for undebuggable files.
- For now, we do nothing, since this is a fairly obscure case. */
- ;
- }
-
- /* FIXME, what about the minimal symbol table? */
- return blewit;
-#else
- return (0);
-#endif
-}
\f
/* Allocate and partially fill a partial symtab. It will be
completely filled at the end of the symbol list.
struct partial_symtab *
start_psymtab_common (struct objfile *objfile,
- struct section_offsets *section_offsets, char *filename,
+ struct section_offsets *section_offsets,
+ const char *filename,
CORE_ADDR textlow, struct partial_symbol **global_syms,
struct partial_symbol **static_syms)
{
different domain (or address) is possible and correct. */
static const struct partial_symbol *
-add_psymbol_to_bcache (char *name, int namelength, domain_enum domain,
+add_psymbol_to_bcache (char *name, int namelength, int copy_name,
+ domain_enum domain,
enum address_class class,
long val, /* Value as a long */
CORE_ADDR coreaddr, /* Value as a CORE_ADDR */
enum language language, struct objfile *objfile,
int *added)
{
- char *buf = name;
/* psymbol is static so that there will be no uninitialized gaps in the
structure which might contain random data, causing cache misses in
bcache. */
static struct partial_symbol psymbol;
-
- if (name[namelength] != '\0')
- {
- buf = alloca (namelength + 1);
- /* Create local copy of the partial symbol */
- memcpy (buf, name, namelength);
- buf[namelength] = '\0';
- }
+
+ /* However, we must ensure that the entire 'value' field has been
+ zeroed before assigning to it, because an assignment may not
+ write the entire field. */
+ memset (&psymbol.ginfo.value, 0, sizeof (psymbol.ginfo.value));
/* val and coreaddr are mutually exclusive, one of them *will* be zero */
if (val != 0)
{
PSYMBOL_DOMAIN (&psymbol) = domain;
PSYMBOL_CLASS (&psymbol) = class;
- SYMBOL_SET_NAMES (&psymbol, buf, namelength, objfile);
+ SYMBOL_SET_NAMES (&psymbol, name, namelength, copy_name, objfile);
/* Stash the partial symbol away in the cache */
return bcache_full (&psymbol, sizeof (struct partial_symbol),
cache. */
const struct partial_symbol *
-add_psymbol_to_list (char *name, int namelength, domain_enum domain,
+add_psymbol_to_list (char *name, int namelength, int copy_name,
+ domain_enum domain,
enum address_class class,
struct psymbol_allocation_list *list,
long val, /* Value as a long */
int added;
/* Stash the partial symbol away in the cache */
- psym = add_psymbol_to_bcache (name, namelength, domain, class,
+ psym = add_psymbol_to_bcache (name, namelength, copy_name, domain, class,
val, coreaddr, language, objfile, &added);
/* Do not duplicate global partial symbols. */
sectp->output_offset = 0;
}
+/* Default implementation for sym_relocate. */
+
+
+bfd_byte *
+default_symfile_relocate (struct objfile *objfile, asection *sectp,
+ bfd_byte *buf)
+{
+ bfd *abfd = objfile->obfd;
+
+ /* We're only interested in sections with relocation
+ information. */
+ if ((sectp->flags & SEC_RELOC) == 0)
+ return NULL;
+
+ /* We will handle section offsets properly elsewhere, so relocate as if
+ all sections begin at 0. */
+ bfd_map_over_sections (abfd, symfile_dummy_outputs, NULL);
+
+ return bfd_simple_get_relocated_section_contents (abfd, sectp, buf, NULL);
+}
+
/* Relocate the contents of a debug section SECTP in ABFD. The
contents are stored in BUF if it is non-NULL, or returned in a
malloc'd buffer otherwise.
debug section. */
bfd_byte *
-symfile_relocate_debug_section (bfd *abfd, asection *sectp, bfd_byte *buf)
+symfile_relocate_debug_section (struct objfile *objfile,
+ asection *sectp, bfd_byte *buf)
{
- /* We're only interested in sections with relocation
- information. */
- if ((sectp->flags & SEC_RELOC) == 0)
- return NULL;
+ gdb_assert (objfile->sf->sym_relocate);
- /* We will handle section offsets properly elsewhere, so relocate as if
- all sections begin at 0. */
- bfd_map_over_sections (abfd, symfile_dummy_outputs, NULL);
-
- return bfd_simple_get_relocated_section_contents (abfd, sectp, buf, NULL);
+ return (*objfile->sf->sym_relocate) (objfile, sectp, buf);
}
struct symfile_segment_data *
add_setshow_optional_filename_cmd ("debug-file-directory", class_support,
&debug_file_directory, _("\
-Set the directory where separate debug symbols are searched for."), _("\
-Show the directory where separate debug symbols are searched for."), _("\
+Set the directories where separate debug symbols are searched for."), _("\
+Show the directories where separate debug symbols are searched for."), _("\
Separate debug symbols are first searched for in the same\n\
directory as the binary, then in the `" DEBUG_SUBDIRECTORY "' subdirectory,\n\
and lastly at the path of the directory of the binary with\n\
-the global debug-file directory prepended."),
+each global debug-file-directory component prepended."),
NULL,
show_debug_file_directory,
&setlist, &showlist);
projects / deliverable / binutils-gdb.git / blobdiff