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symtab/15652

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* dwarf2read.c (try_open_dwop_file): New arg search_cwd.
	All callers updated.
	(open_dwp_file): If we can't find the dwp file, search the basename
	in debug-file-directory.
This commit is contained in:
Doug Evans 2013-06-20 22:16:28 +00:00
parent 9341788208
commit 6ac97d4cc6
2 changed files with 46 additions and 10 deletions
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6
gdb/ChangeLog
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@ -1,5 +1,11 @@
2013-06-20 Doug Evans <dje@google.com>
symtab/15652
* dwarf2read.c (try_open_dwop_file): New arg search_cwd.
All callers updated.
(open_dwp_file): If we can't find the dwp file, search the basename
in debug-file-directory.
* dwarf2read.c (struct dwp_file): Fix comment.
(open_and_init_dwp_file): Set dwp_file->name to bfd's file name.

50
gdb/dwarf2read.c
View File

@ -9304,11 +9304,13 @@ lookup_dwo_in_dwp (struct dwp_file *dwp_file,
preliminary analysis. Return a newly initialized bfd *, which
includes a canonicalized copy of FILE_NAME.
If IS_DWP is TRUE, we're opening a DWP file, otherwise a DWO file.
In case of trouble, return NULL.
SEARCH_CWD is true if the current directory is to be searched.
It will be searched before debug-file-directory.
If unable to find/open the file, return NULL.
NOTE: This function is derived from symfile_bfd_open. */
static bfd *
try_open_dwop_file (const char *file_name, int is_dwp)
try_open_dwop_file (const char *file_name, int is_dwp, int search_cwd)
{
bfd *sym_bfd;
int desc, flags;
@ -9319,11 +9321,16 @@ try_open_dwop_file (const char *file_name, int is_dwp)
char *search_path;
static const char dirname_separator_string[] = { DIRNAME_SEPARATOR, '\0' };
if (*debug_file_directory != '\0')
search_path = concat (".", dirname_separator_string, debug_file_directory,
NULL);
if (search_cwd)
{
if (*debug_file_directory != '\0')
search_path = concat (".", dirname_separator_string,
debug_file_directory, NULL);
else
search_path = xstrdup (".");
}
else
search_path = xstrdup (".");
search_path = xstrdup (debug_file_directory);
flags = 0;
if (is_dwp)
@ -9362,7 +9369,7 @@ open_dwo_file (const char *file_name, const char *comp_dir)
bfd *abfd;
if (IS_ABSOLUTE_PATH (file_name))
return try_open_dwop_file (file_name, 0 /*is_dwp*/);
return try_open_dwop_file (file_name, 0 /*is_dwp*/, 0 /*search_cwd*/);
/* Before trying the search path, try DWO_NAME in COMP_DIR. */
@ -9372,7 +9379,7 @@ open_dwo_file (const char *file_name, const char *comp_dir)
/* NOTE: If comp_dir is a relative path, this will also try the
search path, which seems useful. */
abfd = try_open_dwop_file (path_to_try, 0 /*is_dwp*/);
abfd = try_open_dwop_file (path_to_try, 0 /*is_dwp*/, 1 /*search_cwd*/);
xfree (path_to_try);
if (abfd != NULL)
return abfd;
@ -9384,7 +9391,7 @@ open_dwo_file (const char *file_name, const char *comp_dir)
if (*debug_file_directory == '\0')
return NULL;
return try_open_dwop_file (file_name, 0 /*is_dwp*/);
return try_open_dwop_file (file_name, 0 /*is_dwp*/, 1 /*search_cwd*/);
}
/* This function is mapped across the sections and remembers the offset and
@ -9568,7 +9575,30 @@ allocate_dwp_loaded_cutus_table (struct objfile *objfile)
static bfd *
open_dwp_file (const char *file_name)
{
return try_open_dwop_file (file_name, 1 /*is_dwp*/);
bfd *abfd;
abfd = try_open_dwop_file (file_name, 1 /*is_dwp*/, 1 /*search_cwd*/);
if (abfd != NULL)
return abfd;
/* Work around upstream bug 15652.
http://sourceware.org/bugzilla/show_bug.cgi?id=15652
[Whether that's a "bug" is debatable, but it is getting in our way.]
We have no real idea where the dwp file is, because gdb's realpath-ing
of the executable's path may have discarded the needed info.
[IWBN if the dwp file name was recorded in the executable, akin to
.gnu_debuglink, but that doesn't exist yet.]
Strip the directory from FILE_NAME and search again. */
if (*debug_file_directory != '\0')
{
/* Don't implicitly search the current directory here.
If the user wants to search "." to handle this case,
it must be added to debug-file-directory. */
return try_open_dwop_file (lbasename (file_name), 1 /*is_dwp*/,
0 /*search_cwd*/);
}
return NULL;
}
/* Initialize the use of the DWP file for the current objfile.