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gdb/gdb-6.6-buildid-verify.patch
Jan Kratochvil 4e2e7886e3 - New fast verification whether the .debug file matches its peer 
(build-id).
- New locating of the matching binaries from the pure core file (build-id).
2007-08-28 14:46:38 +00:00

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http://sources.redhat.com/ml/gdb-patches/2007-08/msg00478.html
v2
[ Backported for GDB-6.6. ]
2007-08-26 Jan Kratochvil <jan.kratochvil@redhat.com>
* Makefile.in (symfile.o): Update dependencies.
* symfile.c (symbol_file_add_with_addrs_or_offsets): Initialize the
DEBUGFILE variable. FIND_SEPARATE_DEBUG_FILE called only if !PSYMTABS.
(struct build_id): New structure.
(build_id_bfd_get, build_id_verify, build_id_to_debug_filename): New.
(find_separate_debug_file): New variable BUILD_ID.
Call BUILD_ID_BFD_GET with BUILD_ID_TO_DEBUG_FILENAME as the first try.
2007-08-26 Jan Kratochvil <jan.kratochvil@redhat.com>
* lib/gdb.exp (build_id_debug_filename_get): New function.
* gdb.base/sepdebug.exp: Reflect the changes in the heading comment.
Remove the generate DEBUG file for the future testcase runs.
New testcase for the NT_GNU_BUILD_ID retrieval.
Move the final testing step to ...
(test_different_dir): ... a new function.
New parameter XFAIL to XFAIL all the tests performed.
New parameter TEST_DIFFERENT_DIR parametrizing the directory.
New parameter TYPE to PF_PREFIX all the tests performed.
2007-08-26 Jan Kratochvil <jan.kratochvil@redhat.com>
* gdb.texinfo (Separate Debug Files): Included a BUILD ID description.
Enlisted BUILD ID to the debug file searching example.
Included a BUILD ID `.note.gnu.build-id' section description.
Updated/added the debug files splitting instructions for OBJCOPY.
diff -u -rup gdb-6.6-orig/gdb/Makefile.in gdb-6.6/gdb/Makefile.in
--- gdb-6.6-orig/gdb/Makefile.in 2007-08-28 14:32:18.000000000 +0200
+++ gdb-6.6/gdb/Makefile.in 2007-08-28 14:33:56.000000000 +0200
@@ -2785,7 +2785,7 @@ symfile.o: symfile.c $(defs_h) $(bfdlink
$(gdb_stabs_h) $(gdb_obstack_h) $(completer_h) $(bcache_h) \
$(hashtab_h) $(readline_h) $(gdb_assert_h) $(block_h) \
$(gdb_string_h) $(gdb_stat_h) $(observer_h) $(exec_h) \
- $(parser_defs_h)
+ $(parser_defs_h) $(elf_bfd_h)
symfile-mem.o: symfile-mem.c $(defs_h) $(symtab_h) $(gdbcore_h) \
$(objfiles_h) $(exceptions_h) $(gdbcmd_h) $(target_h) $(value_h) \
$(symfile_h) $(observer_h) $(auxv_h) $(elf_common_h)
diff -u -rup gdb-6.6-orig/gdb/doc/gdb.texinfo gdb-6.6/gdb/doc/gdb.texinfo
--- gdb-6.6-orig/gdb/doc/gdb.texinfo 2007-08-28 14:32:18.000000000 +0200
+++ gdb-6.6/gdb/doc/gdb.texinfo 2007-08-28 14:33:03.000000000 +0200
@@ -11857,18 +11857,32 @@ than the executable code itself --- some
information for their executables in separate files, which users can
install only when they need to debug a problem.
-If an executable's debugging information has been extracted to a
-separate file, the executable should contain a @dfn{debug link} giving
-the name of the debugging information file (with no directory
-components), and a checksum of its contents. (The exact form of a
-debug link is described below.) If the full name of the directory
-containing the executable is @var{execdir}, and the executable has a
-debug link that specifies the name @var{debugfile}, then @value{GDBN}
-will automatically search for the debugging information file in three
-places:
+There are two identificators how the separate debug file may be found:
@itemize @bullet
@item
+@dfn{debug link} is present only in the executable if its debug information has
+been split out. It is not present in the separate debug file. It provides the
+separate debug file filename, usually as @file{executable.debug}.
+@item
+@dfn{build id} is present in all the files (if the operating system supports
+it). The executable file and its separate debug file have the same unique
+@dfn{build id} content.
+@end itemize
+
+If the full name of the directory containing the executable is @var{execdir},
+the executable has a debug link that specifies the name @var{debugfile},
+@var{bu} is the first byte (two hexadecimal characters) of the build id
+content, @var{ild-id} are the remaining bytes / hexadecimal characters and
+@var{globaldebugdir} is the global debug file directory then @value{GDBN} will
+automatically search for the debugging information file in four places:
+
+@itemize @bullet
+@item
+a specific file in the subdirectory of the global debug file directory
+according to the @dfn{build id} content (if present), the file tried is
+@file{@var{globaldebugdir}/.debug-id/@var{bu}/@var{ild-id}.debug}.
+@item
the directory containing the executable file (that is, it will look
for a file named @file{@var{execdir}/@var{debugfile}},
@item
@@ -11883,15 +11897,17 @@ executable's full path, and the name fro
@end itemize
@noindent
@value{GDBN} checks under each of these names for a debugging
-information file whose checksum matches that given in the link, and
-reads the debugging information from the first one it finds.
-
-So, for example, if you ask @value{GDBN} to debug @file{/usr/bin/ls},
-which has a link containing the name @file{ls.debug}, and the global
-debug directory is @file{/usr/lib/debug}, then @value{GDBN} will look
-for debug information in @file{/usr/bin/ls.debug},
-@file{/usr/bin/.debug/ls.debug}, and
-@file{/usr/lib/debug/usr/bin/ls.debug}.
+information file with build id content matching the build id content of the
+executable file - or - whose checksum matches the one given in the link in the
+debug link case. In each case @value{GDBN} reads the debugging information
+from the first debug file it finds.
+
+So, for example, if you ask @value{GDBN} to debug @file{/usr/bin/ls}, which has
+a @dfn{debug link} containing the name @file{ls.debug}, its @dfn{build id}
+value in hexadecimal is @code{abcdef} and the global debug directory is
+@file{/usr/lib/debug}, then @value{GDBN} will look for debug information in
+@file{/usr/lib/debug/.build-id/ab/cdef.debug}, @file{/usr/bin/ls.debug},
+@file{/usr/bin/.debug/ls.debug}, and @file{/usr/lib/debug/usr/bin/ls.debug}.
You can set the global debugging info directory's name, and view the
name @value{GDBN} is currently using.
@@ -11933,6 +11949,16 @@ Any executable file format can carry a d
contain a section named @code{.gnu_debuglink} with the contents
described above.
+@cindex @code{.note.gnu.build-id} sections
+@cindex build id
+Build id is a special section of the executable file named
+@code{.note.gnu.build-id}. The section contains unique identification hash
+derived from the built files - it remains the same across multiple builds of
+the same build tree. The default algorithm SHA1 produces 160 bits (40
+hexadecimal characters) of the content. The same section and value is present
+in the original built binary with symbols, in its stripped variant and in the
+separate debug information file.
+
The debugging information file itself should be an ordinary
executable, containing a full set of linker symbols, sections, and
debugging information. The sections of the debugging information file
@@ -11940,18 +11966,21 @@ should have the same names, addresses an
but they need not contain any data --- much like a @code{.bss} section
in an ordinary executable.
-As of December 2002, there is no standard GNU utility to produce
-separated executable / debugging information file pairs. Ulrich
-Drepper's @file{elfutils} package, starting with version 0.53,
-contains a version of the @code{strip} command such that the command
-@kbd{strip foo -f foo.debug} removes the debugging information from
-the executable file @file{foo}, places it in the file
-@file{foo.debug}, and leaves behind a debug link in @file{foo}.
-
-Since there are many different ways to compute CRC's (different
-polynomials, reversals, byte ordering, etc.), the simplest way to
-describe the CRC used in @code{.gnu_debuglink} sections is to give the
-complete code for a function that computes it:
+@sc{gnu} binary utilities contain the @samp{objcopy} utility able to produce
+the separated executable / debugging information file pairs by commands
+@kbd{objcopy --only-keep-debug foo foo.debug; strip -g foo; objcopy
+--add-gnu-debuglink="foo.debug" "foo"}. These commands remove the debugging
+information from the executable file @file{foo}, place it in the file
+@file{foo.debug}, and leave behind a debug link in @file{foo}. Ulrich
+Drepper's @file{elfutils} package, starting with version 0.53, contains
+a version of the @code{strip} command such that the command @kbd{strip foo -f
+foo.debug} has the same functionality as the three commands above.
+
+Since there are many different ways to compute CRC's for the debug link
+(different polynomials, reversals, byte ordering, etc.). This computation does
+not apply to the build id section. The simplest way to describe the CRC used
+in @code{.gnu_debuglink} sections is to give the complete code for a function
+that computes it:
@kindex gnu_debuglink_crc32
@smallexample
diff -u -rup gdb-6.6-orig/gdb/symfile.c gdb-6.6/gdb/symfile.c
--- gdb-6.6-orig/gdb/symfile.c 2007-08-28 14:32:17.000000000 +0200
+++ gdb-6.6/gdb/symfile.c 2007-08-28 14:34:12.000000000 +0200
@@ -53,6 +53,7 @@
#include "observer.h"
#include "exec.h"
#include "parser-defs.h"
+#include "elf-bfd.h"
#include <sys/types.h>
#include <fcntl.h>
@@ -904,7 +905,7 @@ symbol_file_add_with_addrs_or_offsets (b
{
struct objfile *objfile;
struct partial_symtab *psymtab;
- char *debugfile;
+ char *debugfile = NULL;
struct section_addr_info *orig_addrs = NULL;
struct cleanup *my_cleanups;
const char *name = bfd_get_filename (abfd);
@@ -968,7 +969,11 @@ symbol_file_add_with_addrs_or_offsets (b
}
}
- debugfile = find_separate_debug_file (objfile);
+ /* 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)
@@ -1115,6 +1120,99 @@ symbol_file_clear (int from_tty)
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. */
+ 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 ()));
+ return retval;
+}
+
+static char *debug_file_directory = NULL;
+
+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)
{
@@ -1278,7 +1280,6 @@ separate_debug_file_exists (const char *
return 1;
}
-static char *debug_file_directory = NULL;
static void
show_debug_file_directory (struct ui_file *file, int from_tty,
struct cmd_list_element *c, const char *value)
@@ -1207,6 +1303,25 @@ find_separate_debug_file (struct objfile
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);
+ free (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);
diff -u -rup gdb-6.6-orig/gdb/testsuite/gdb.base/sepdebug.exp gdb-6.6/gdb/testsuite/gdb.base/sepdebug.exp
--- gdb-6.6-orig/gdb/testsuite/gdb.base/sepdebug.exp 2007-08-28 14:32:17.000000000 +0200
+++ gdb-6.6/gdb/testsuite/gdb.base/sepdebug.exp 2007-08-28 14:46:38.000000000 +0200
@@ -21,11 +21,14 @@
# Based on break.exp, written by Rob Savoye. (rob@cygnus.com)
# Modified to test gdb's handling of separate debug info files.
+# Modified to test gdb's handling of a debug-id retrieval.
# This file has two parts. The first is testing that gdb behaves
# normally after reading in an executable and its corresponding
# separate debug file. The second moves the .debug file to a different
# location and tests the "set debug-file-directory" command.
+# The third is for testing build-id retrievel by finding the separate
+# ".debug-id/ab/cdef.debug" file.
if $tracelevel then {
@@ -851,110 +854,6 @@ proc test_next_with_recursion {} {
test_next_with_recursion
-#********
-
-# now move the .debug file to a different location so that we can test
-# the "set debug-file-directory" command.
-
-remote_exec build "mv ${objdir}/${subdir}/.debug/${testfile}.debug ${objdir}/${subdir}"
-gdb_exit
-gdb_start
-gdb_reinitialize_dir $srcdir/$subdir
-gdb_test "set debug-file-directory ${objdir}/${subdir}" ".*" "set separate debug location"
-gdb_load ${binfile}
-
-if [target_info exists gdb_stub] {
- gdb_step_for_stub;
-}
-
-#
-# test break at function
-#
-gdb_test "break main" \
- "Breakpoint.*at.* file .*$srcfile, line.*" \
- "breakpoint function, optimized file"
-
-#
-# test break at function
-#
-gdb_test "break marker4" \
- "Breakpoint.*at.* file .*$srcfile, line.*" \
- "breakpoint small function, optimized file"
-
-#
-# run until the breakpoint at main is hit. For non-stubs-using targets.
-#
-if ![target_info exists use_gdb_stub] {
- if [istarget "*-*-vxworks*"] then {
- send_gdb "run vxmain \"2\"\n"
- set timeout 120
- verbose "Timeout is now $timeout seconds" 2
- } else {
- send_gdb "run\n"
- }
- gdb_expect {
- -re "The program .* has been started already.*y or n. $" {
- send_gdb "y\n"
- exp_continue
- }
- -re "Starting program.*Breakpoint \[0-9\]+,.*main .*argc.*argv.* at .*$srcfile:$bp_location6.*$bp_location6\[\t \]+if .argc.* \{.*$gdb_prompt $"\
- { pass "run until function breakpoint, optimized file" }
- -re "Starting program.*Breakpoint \[0-9\]+,.*main .*argc.*argv.* at .*$gdb_prompt $"\
- { pass "run until function breakpoint, optimized file (code motion)" }
- -re ".*$gdb_prompt $" { fail "run until function breakpoint, optimized file" }
- timeout { fail "run until function breakpoint, optimized file (timeout)" }
- }
-} else {
- if ![target_info exists gdb_stub] {
- gdb_test continue ".*Continuing\\..*Breakpoint \[0-9\]+, main \\(argc=.*, argv=.*, envp=.*\\) at .*$srcfile:$bp_location6.*$bp_location6\[\t \]+if .argc.*\{.*" "stub continue, optimized file"
- }
-}
-
-#
-# run until the breakpoint at a small function
-#
-
-#
-# Add a second pass pattern. The behavior differs here between stabs
-# and dwarf for one-line functions. Stabs preserves two line symbols
-# (one before the prologue and one after) with the same line number,
-# but dwarf regards these as duplicates and discards one of them.
-# Therefore the address after the prologue (where the breakpoint is)
-# has no exactly matching line symbol, and GDB reports the breakpoint
-# as if it were in the middle of a line rather than at the beginning.
-
-set bp_location13 [gdb_get_line_number "set breakpoint 13 here"]
-set bp_location14 [gdb_get_line_number "set breakpoint 14 here"]
-send_gdb "continue\n"
-gdb_expect {
- -re "Breakpoint $decimal, marker4 \\(d=177601976\\) at .*$srcfile:$bp_location13\[\r\n\]+$bp_location13\[\t \]+void marker4.*" {
- pass "run until breakpoint set at small function, optimized file"
- }
- -re "Breakpoint $decimal, $hex in marker4 \\(d=177601976\\) at .*$srcfile:$bp_location13\[\r\n\]+$bp_location13\[\t \]+void marker4.*" {
- pass "run until breakpoint set at small function, optimized file"
- }
- -re "Breakpoint $decimal, marker4 \\(d=177601976\\) at .*$srcfile:$bp_location14\[\r\n\]+$bp_location14\[\t \]+void marker4.*" {
- # marker4() is defined at line 46 when compiled with -DPROTOTYPES
- pass "run until breakpoint set at small function, optimized file (line bp_location14)"
- }
- -re ".*$gdb_prompt " {
- fail "run until breakpoint set at small function, optimized file"
- }
- timeout {
- fail "run until breakpoint set at small function, optimized file (timeout)"
- }
-}
-
-
-# Reset the default arguments for VxWorks
-if [istarget "*-*-vxworks*"] {
- set timeout 10
- verbose "Timeout is now $timeout seconds" 2
- send_gdb "set args main\n"
- gdb_expect -re ".*$gdb_prompt $" {}
-}
-
-
# Compile up a second, different, object file. Copy its debug info
# over the top of the new debug info. Note that somewhere in the
# above the "set debug-file-directory" variable is set to
@@ -973,6 +872,7 @@ if [gdb_gnu_strip_debug $binfile] {
unsupported "cannot produce separate debug info files"
return -1
}
+remote_exec build "cp ${existing_binfile}.debug ${existing_binfile}.debug-backup"
remote_exec build "cp $corrupt_debug_file ${existing_binfile}.debug"
gdb_exit
@@ -990,3 +890,188 @@ gdb_test_multiple "file $existing_binfil
exp_continue
}
}
+
+remote_exec build "cp ${existing_binfile}.debug-backup ${existing_binfile}.debug"
+
+#********
+
+proc test_different_dir {type test_different_dir xfail} {
+ global srcdir subdir objdir binfile srcfile timeout gdb_prompt
+ global pf_prefix
+ global bp_location6 decimal hex
+
+ set pf_prefix "$type:"
+
+ gdb_exit
+ gdb_start
+ gdb_reinitialize_dir $srcdir/$subdir
+ gdb_test "set debug-file-directory ${test_different_dir}" ".*" "set separate debug location"
+ gdb_load ${binfile}
+
+ if [target_info exists gdb_stub] {
+ gdb_step_for_stub;
+ }
+
+ #
+ # test break at function
+ #
+ if {$xfail} {
+ setup_xfail "*-*-*"
+ }
+ gdb_test "break main" \
+ "Breakpoint.*at.* file .*$srcfile, line.*" \
+ "breakpoint function, optimized file"
+
+ #
+ # test break at function
+ #
+ if {$xfail} {
+ setup_xfail "*-*-*"
+ }
+ gdb_test "break marker4" \
+ "Breakpoint.*at.* file .*$srcfile, line.*" \
+ "breakpoint small function, optimized file"
+
+ #
+ # run until the breakpoint at main is hit. For non-stubs-using targets.
+ #
+ gdb_run_cmd
+ if {$xfail} {
+ setup_xfail "*-*-*"
+ }
+ gdb_expect {
+ -re "Breakpoint \[0-9\]+,.*main .*argc.*argv.* at .*$srcfile:$bp_location6.*$bp_location6\[\t \]+if .argc.* \{.*$gdb_prompt $" {
+ pass "run until function breakpoint, optimized file"
+ }
+ -re "Breakpoint \[0-9\]+,.*main .*argc.*argv.* at .*$gdb_prompt $" {
+ pass "run until function breakpoint, optimized file (code motion)"
+ }
+ -re "$gdb_prompt $" {
+ fail "run until function breakpoint, optimized file"
+ }
+ timeout {
+ fail "run until function breakpoint, optimized file (timeout)"
+ }
+ }
+
+ if ![target_info exists use_gdb_stub] {
+ if [istarget "*-*-vxworks*"] then {
+ send_gdb "run vxmain \"2\"\n"
+ set timeout 120
+ verbose "Timeout is now $timeout seconds" 2
+ } else {
+ send_gdb "run\n"
+ }
+ if {$xfail} {
+ setup_xfail "*-*-*"
+ }
+ gdb_expect {
+ -re "The program .* has been started already.*y or n. $" {
+ send_gdb "y\n"
+ exp_continue
+ }
+ -re "Starting program.*Breakpoint \[0-9\]+,.*main .*argc.*argv.* at .*$srcfile:$bp_location6.*$bp_location6\[\t \]+if .argc.* \{.*$gdb_prompt $"\
+ { pass "run until function breakpoint, optimized file" }
+ -re "Starting program.*Breakpoint \[0-9\]+,.*main .*argc.*argv.* at .*$gdb_prompt $"\
+ { pass "run until function breakpoint, optimized file (code motion)" }
+ -re ".*$gdb_prompt $" { fail "run until function breakpoint, optimized file" }
+ timeout { fail "run until function breakpoint, optimized file (timeout)" }
+ }
+ } else {
+ if ![target_info exists gdb_stub] {
+ gdb_test continue ".*Continuing\\..*Breakpoint \[0-9\]+, main \\(argc=.*, argv=.*, envp=.*\\) at .*$srcfile:$bp_location6.*$bp_location6\[\t \]+if .argc.*\{.*" "stub continue, optimized file"
+ }
+ }
+
+
+
+ #
+ # run until the breakpoint at a small function
+ #
+
+ #
+ # Add a second pass pattern. The behavior differs here between stabs
+ # and dwarf for one-line functions. Stabs preserves two line symbols
+ # (one before the prologue and one after) with the same line number,
+ # but dwarf regards these as duplicates and discards one of them.
+ # Therefore the address after the prologue (where the breakpoint is)
+ # has no exactly matching line symbol, and GDB reports the breakpoint
+ # as if it were in the middle of a line rather than at the beginning.
+
+ set bp_location13 [gdb_get_line_number "set breakpoint 13 here"]
+ set bp_location14 [gdb_get_line_number "set breakpoint 14 here"]
+ send_gdb "continue\n"
+ if {$xfail} {
+ setup_xfail "*-*-*"
+ }
+ gdb_expect {
+ -re "Breakpoint $decimal, marker4 \\(d=177601976\\) at .*$srcfile:$bp_location13\[\r\n\]+$bp_location13\[\t \]+void marker4.*" {
+ pass "run until breakpoint set at small function, optimized file"
+ }
+ -re "Breakpoint $decimal, $hex in marker4 \\(d=177601976\\) at .*$srcfile:$bp_location13\[\r\n\]+$bp_location13\[\t \]+void marker4.*" {
+ pass "run until breakpoint set at small function, optimized file"
+ }
+ -re "Breakpoint $decimal, marker4 \\(d=177601976\\) at .*$srcfile:$bp_location14\[\r\n\]+$bp_location14\[\t \]+void marker4.*" {
+ # marker4() is defined at line 46 when compiled with -DPROTOTYPES
+ pass "run until breakpoint set at small function, optimized file (line bp_location14)"
+ }
+ -re ".*$gdb_prompt " {
+ fail "run until breakpoint set at small function, optimized file"
+ }
+ timeout {
+ fail "run until breakpoint set at small function, optimized file (timeout)"
+ }
+ }
+
+
+ # Reset the default arguments for VxWorks
+ if [istarget "*-*-vxworks*"] {
+ set timeout 10
+ verbose "Timeout is now $timeout seconds" 2
+ send_gdb "set args main\n"
+ gdb_expect -re ".*$gdb_prompt $" {}
+ }
+
+ unset pf_prefix
+# proc test_different_dir
+}
+
+
+# now move the .debug file to a different location so that we can test
+# the "set debug-file-directory" command.
+
+remote_exec build "mv ${objdir}/${subdir}/.debug/${testfile}.debug ${objdir}/${subdir}"
+set debugfile "${objdir}/${subdir}/${testfile}.debug"
+
+test_different_dir debuglink "${objdir}/${subdir}" 0
+
+
+# NT_GNU_BUILD_ID / .note.gnu.build-id test:
+
+set build_id_debug_filename [build_id_debug_filename_get $binfile]
+if {$build_id_debug_filename eq ""} {
+ unsupported "build-id is not supported by the compiler"
+
+ # Spare debug files may confuse testsuite runs in the future.
+ remote_exec build "rm -f $debugfile"
+} else {
+ set build_id_debugself_filename [build_id_debug_filename_get $debugfile]
+ set test "build-id support by binutils"
+ set xfail 0
+ if {$build_id_debugself_filename eq ""} {
+ unsupported $test
+ set xfail 1
+ } elseif {$build_id_debugself_filename ne $build_id_debug_filename} {
+ fail $test
+ } else {
+ pass $test
+ }
+
+ file mkdir [file dirname ${objdir}/${subdir}/${build_id_debug_filename}]
+ remote_exec build "mv $debugfile ${objdir}/${subdir}/${build_id_debug_filename}"
+
+ test_different_dir build-id "${objdir}/${subdir}" $xfail
+
+ # Spare debug files may confuse testsuite runs in the future.
+ remote_exec build "rm -f ${objdir}/${subdir}/${build_id_debug_filename}"
+}
diff -u -rup gdb-6.6-orig/gdb/testsuite/lib/gdb.exp gdb-6.6/gdb/testsuite/lib/gdb.exp
--- gdb-6.6-orig/gdb/testsuite/lib/gdb.exp 2007-08-28 14:32:18.000000000 +0200
+++ gdb-6.6/gdb/testsuite/lib/gdb.exp 2007-08-28 14:33:03.000000000 +0200
@@ -2323,6 +2323,27 @@ proc separate_debug_filename { exec } {
return $debug_file
}
+# Return the build-id hex string (usually 160 bits as 40 hex characters)
+# converted to the form: .build-id/ab/cdef1234...89.debug
+# Return "" if no build-id found.
+proc build_id_debug_filename_get { exec } {
+ set tmp "${exec}-tmp"
+ exec objcopy -j .note.gnu.build-id -O binary $exec $tmp
+ set fi [open $tmp]
+ # Skip the NOTE header.
+ read $fi 16
+ set data [read $fi]
+ close $fi
+ file delete $tmp
+ if {$data eq ""} {
+ return ""
+ }
+ # Convert it to hex.
+ binary scan $data H* data
+ set data [regsub {^..} $data {\0/}]
+ return ".build-id/${data}.debug";
+}
+
# Create stripped files for DEST, replacing it. If ARGS is passed, it is a
# list of optional flags. The only currently supported flag is no-main,
# which removes the symbol entry for main from the separate debug file.
--- gdb-6.6/gdb/testsuite/gdb.base/sepdebug.exp 2007-08-28 15:27:36.000000000 +0200
+++ gdb-6.6/gdb/testsuite/gdb.base/sepdebug.exp 2007-08-28 15:25:23.000000000 +0200
@@ -860,14 +860,14 @@ test_next_with_recursion
# ${objdir}/${subdir} so need to move things there.
set existing_binfile $binfile
-set testfile "sepdebug2"
-set srcfile ${testfile}.c
-set binfile ${objdir}/${subdir}/${testfile}
-set corrupt_debug_file [separate_debug_filename $binfile]
-if { [gdb_compile "${srcdir}/${subdir}/${srcfile}" "${binfile}" executable {debug additional_flags=-w}] != "" } {
+set testfile2 "sepdebug2"
+set srcfile2 ${testfile2}.c
+set binfile2 ${objdir}/${subdir}/${testfile2}
+set corrupt_debug_file [separate_debug_filename $binfile2]
+if { [gdb_compile "${srcdir}/${subdir}/${srcfile2}" "${binfile2}" executable {debug additional_flags=-w}] != "" } {
return -1
}
-if [gdb_gnu_strip_debug $binfile] {
+if [gdb_gnu_strip_debug $binfile2] {
# check that you have a recent version of strip and objcopy installed
unsupported "cannot produce separate debug info files"
return -1
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