#define DEBUG_SUBDIRECTORY ".debug"
#endif
-char *
-find_separate_debug_file_by_debuglink (struct objfile *objfile)
+/* Find a separate debuginfo file for OBJFILE, using DIR as the directory
+ where the original file resides (may not be the same as
+ dirname(objfile->name) due to symlinks), and DEBUGLINK as the file we are
+ looking for. Returns the name of the debuginfo, of NULL. */
+
+static char *
+find_separate_debug_file (const char *dir,
+ const char *canon_dir,
+ const char *debuglink,
+ unsigned long crc32, struct objfile *objfile)
{
- char *basename, *debugdir;
- char *dir = NULL;
- char *debugfile = NULL;
- char *canon_name = NULL;
- unsigned long crc32;
+ char *debugdir;
+ char *debugfile;
int i;
- basename = get_debug_link_info (objfile, &crc32);
-
- if (basename == 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);
-
- /* Strip off the final filename part, leaving the directory name,
- followed by a slash. The directory can be relative or absolute. */
- for (i = strlen(dir) - 1; i >= 0; i--)
- {
- if (IS_DIR_SEPARATOR (dir[i]))
- break;
- }
- /* If I is -1 then no directory is present there and DIR will be "". */
- dir[i+1] = '\0';
-
- /* Set I to max (strlen (canon_name), strlen (dir)). */
- canon_name = lrealpath (dir);
+ /* Set I to max (strlen (canon_dir), strlen (dir)). */
i = strlen (dir);
- if (canon_name && strlen (canon_name) > i)
- i = strlen (canon_name);
+ if (canon_dir != NULL && strlen (canon_dir) > i)
+ i = strlen (canon_dir);
debugfile = xmalloc (strlen (debug_file_directory) + 1
+ i
+ strlen (DEBUG_SUBDIRECTORY)
+ strlen ("/")
- + strlen (basename)
+ + strlen (debuglink)
+ 1);
/* First try in the same directory as the original file. */
strcpy (debugfile, dir);
- strcat (debugfile, basename);
+ strcat (debugfile, debuglink);
if (separate_debug_file_exists (debugfile, crc32, objfile))
- goto cleanup_return_debugfile;
+ return debugfile;
/* Then try in the subdirectory named DEBUG_SUBDIRECTORY. */
strcpy (debugfile, dir);
strcat (debugfile, DEBUG_SUBDIRECTORY);
strcat (debugfile, "/");
- strcat (debugfile, basename);
+ strcat (debugfile, debuglink);
if (separate_debug_file_exists (debugfile, crc32, objfile))
- goto cleanup_return_debugfile;
+ return debugfile;
/* Then try in the global debugfile directories.
debugfile[debugdir_end - debugdir] = 0;
strcat (debugfile, "/");
strcat (debugfile, dir);
- strcat (debugfile, basename);
+ strcat (debugfile, debuglink);
if (separate_debug_file_exists (debugfile, crc32, objfile))
- goto cleanup_return_debugfile;
+ return debugfile;
/* If the file is in the sysroot, try using its base path in the
global debugfile directory. */
- if (canon_name
- && filename_ncmp (canon_name, gdb_sysroot,
+ if (canon_dir != NULL
+ && filename_ncmp (canon_dir, gdb_sysroot,
strlen (gdb_sysroot)) == 0
- && IS_DIR_SEPARATOR (canon_name[strlen (gdb_sysroot)]))
+ && IS_DIR_SEPARATOR (canon_dir[strlen (gdb_sysroot)]))
{
memcpy (debugfile, debugdir, debugdir_end - debugdir);
debugfile[debugdir_end - debugdir] = 0;
- strcat (debugfile, canon_name + strlen (gdb_sysroot));
+ strcat (debugfile, canon_dir + strlen (gdb_sysroot));
strcat (debugfile, "/");
- strcat (debugfile, basename);
+ strcat (debugfile, debuglink);
if (separate_debug_file_exists (debugfile, crc32, objfile))
- goto cleanup_return_debugfile;
+ return debugfile;
}
debugdir = debugdir_end;
while (*debugdir != 0);
xfree (debugfile);
- debugfile = NULL;
+ return NULL;
+}
+
+/* Modify PATH to contain only "directory/" part of PATH.
+ If there were no directory separators in PATH, PATH will be empty
+ string on return. */
+
+static void
+terminate_after_last_dir_separator (char *path)
+{
+ int i;
+
+ /* Strip off the final filename part, leaving the directory name,
+ followed by a slash. The directory can be relative or absolute. */
+ for (i = strlen(path) - 1; i >= 0; i--)
+ if (IS_DIR_SEPARATOR (path[i]))
+ break;
+
+ /* If I is -1 then no directory is present there and DIR will be "". */
+ path[i + 1] = '\0';
+}
+
+/* Find separate debuginfo for OBJFILE (using .gnu_debuglink section).
+ Returns pathname, or NULL. */
+
+char *
+find_separate_debug_file_by_debuglink (struct objfile *objfile)
+{
+ char *debuglink;
+ char *dir, *canon_dir;
+ char *debugfile;
+ unsigned long crc32;
+ struct cleanup *cleanups;
+
+ debuglink = get_debug_link_info (objfile, &crc32);
+
+ if (debuglink == NULL)
+ {
+ /* There's no separate debug info, hence there's no way we could
+ load it => no warning. */
+ return NULL;
+ }
+
+ dir = xstrdup (objfile->name);
+ cleanups = make_cleanup (xfree, dir);
+ terminate_after_last_dir_separator (dir);
+ canon_dir = lrealpath (dir);
+
+ debugfile = find_separate_debug_file (dir, canon_dir, debuglink,
+ crc32, objfile);
+ xfree (canon_dir);
+
+ if (debugfile == NULL)
+ {
+#ifdef HAVE_LSTAT
+ /* For PR gdb/9538, try again with realpath (if different from the
+ original). */
+
+ struct stat st_buf;
+
+ if (lstat (objfile->name, &st_buf) == 0 && S_ISLNK(st_buf.st_mode))
+ {
+ char *symlink_dir;
+
+ symlink_dir = lrealpath (objfile->name);
+ if (symlink_dir != NULL)
+ {
+ make_cleanup (xfree, symlink_dir);
+ terminate_after_last_dir_separator (symlink_dir);
+ if (strcmp (dir, symlink_dir) != 0)
+ {
+ /* Different directory, so try using it. */
+ debugfile = find_separate_debug_file (symlink_dir,
+ symlink_dir,
+ debuglink,
+ crc32,
+ objfile);
+ }
+ }
+ }
+#endif /* HAVE_LSTAT */
+ }
-cleanup_return_debugfile:
- xfree (canon_name);
- xfree (basename);
- xfree (dir);
+ do_cleanups (cleanups);
return debugfile;
}
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