213 lines
7.7 KiB
Diff
213 lines
7.7 KiB
Diff
If you provided some relative path to the shared library, such as with
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export LD_LIBRARY_PATH=.
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then gdb would fail to match the shared library name during the TLS lookup.
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The testsuite needs `gdb-6.3-bz146810-solib_absolute_prefix_is_empty.patch'.
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The testsuite needs `gdb-6.5-tls-of-separate-debuginfo.patch'.
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2006-09-01 Jan Kratochvil <jan.kratochvil@redhat.com>
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* solib-svr4.c (svr4_fetch_objfile_link_map): Match even absolute
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requested pathnames to the internal loaded relative pathnames.
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2007-10-16 Jan Kratochvil <jan.kratochvil@redhat.com>
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Port to GDB-6.7.
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Index: gdb-6.7/gdb/solib-svr4.c
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===================================================================
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--- gdb-6.7.orig/gdb/solib-svr4.c 2007-10-14 23:04:45.000000000 +0200
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+++ gdb-6.7/gdb/solib-svr4.c 2007-10-16 15:43:56.000000000 +0200
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@@ -1009,10 +1009,14 @@ CORE_ADDR
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svr4_fetch_objfile_link_map (struct objfile *objfile)
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{
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CORE_ADDR lm;
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+ int resolve;
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if ((debug_base = locate_base ()) == 0)
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return 0; /* failed somehow... */
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+for (resolve = 0; resolve <= 1; resolve++)
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+{
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+
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/* Position ourselves on the first link map. */
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lm = solib_svr4_r_map ();
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while (lm)
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@@ -1051,6 +1055,21 @@ svr4_fetch_objfile_link_map (struct objf
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safe_strerror (errcode));
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else
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{
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+ /* solib_svr4_r_map() may contain relative pathnames while
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+ `objfile->name' is absolute. */
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+ if (resolve && buffer && buffer[0] != '/')
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+ {
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+ char *absolute;
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+ int fd;
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+
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+ fd = solib_open (buffer, &absolute);
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+ if (fd != -1)
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+ {
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+ make_cleanup (xfree, absolute);
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+ buffer = absolute;
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+ close (fd);
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+ }
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+ }
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/* Is this the linkmap for the file we want? */
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/* If the file is not a shared library and has no name,
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we are sure it is the main executable, so we return that. */
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@@ -1069,6 +1088,9 @@ svr4_fetch_objfile_link_map (struct objf
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builtin_type_void_data_ptr);
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do_cleanups (old_chain);
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}
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+
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+} /* resolve */
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+
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return 0;
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}
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Index: gdb-6.7/gdb/testsuite/gdb.threads/tls-sepdebug-main.c
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===================================================================
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--- /dev/null 1970-01-01 00:00:00.000000000 +0000
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+++ gdb-6.7/gdb/testsuite/gdb.threads/tls-sepdebug-main.c 2007-10-16 15:40:01.000000000 +0200
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@@ -0,0 +1,25 @@
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+/* This testcase is part of GDB, the GNU debugger.
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+
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+ Copyright 2006 Free Software Foundation, Inc.
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+
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+ This program is free software; you can redistribute it and/or modify
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+ it under the terms of the GNU General Public License as published by
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+ the Free Software Foundation; either version 2 of the License, or
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+ (at your option) any later version.
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+
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+ This program is distributed in the hope that it will be useful,
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+ but WITHOUT ANY WARRANTY; without even the implied warranty of
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+ MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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+ GNU General Public License for more details.
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+
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+ You should have received a copy of the GNU General Public License
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+ along with this program; if not, write to the Free Software
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+ Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
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+
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+ Please email any bugs, comments, and/or additions to this file to:
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+ bug-gdb@prep.ai.mit.edu */
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+
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+int main()
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+{
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+ return 0;
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+}
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Index: gdb-6.7/gdb/testsuite/gdb.threads/tls-sepdebug-shared.c
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===================================================================
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--- /dev/null 1970-01-01 00:00:00.000000000 +0000
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+++ gdb-6.7/gdb/testsuite/gdb.threads/tls-sepdebug-shared.c 2007-10-16 15:40:01.000000000 +0200
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@@ -0,0 +1,22 @@
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+/* This testcase is part of GDB, the GNU debugger.
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+
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+ Copyright 2006 Free Software Foundation, Inc.
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+
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+ This program is free software; you can redistribute it and/or modify
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+ it under the terms of the GNU General Public License as published by
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+ the Free Software Foundation; either version 2 of the License, or
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+ (at your option) any later version.
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+
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+ This program is distributed in the hope that it will be useful,
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+ but WITHOUT ANY WARRANTY; without even the implied warranty of
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+ MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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+ GNU General Public License for more details.
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+
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+ You should have received a copy of the GNU General Public License
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+ along with this program; if not, write to the Free Software
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+ Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
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+
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+ Please email any bugs, comments, and/or additions to this file to:
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+ bug-gdb@prep.ai.mit.edu */
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+
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+__thread int var = 42;
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Index: gdb-6.7/gdb/testsuite/gdb.threads/tls-sepdebug.exp
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===================================================================
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--- /dev/null 1970-01-01 00:00:00.000000000 +0000
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+++ gdb-6.7/gdb/testsuite/gdb.threads/tls-sepdebug.exp 2007-10-16 15:40:01.000000000 +0200
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@@ -0,0 +1,81 @@
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+# Copyright 2006 Free Software Foundation, Inc.
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+
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+# This program is free software; you can redistribute it and/or modify
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+# it under the terms of the GNU General Public License as published by
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+# the Free Software Foundation; either version 2 of the License, or
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+# (at your option) any later version.
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+#
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+# This program is distributed in the hope that it will be useful,
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+# but WITHOUT ANY WARRANTY; without even the implied warranty of
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+# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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+# GNU General Public License for more details.
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+#
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+# You should have received a copy of the GNU General Public License
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+# along with this program; if not, write to the Free Software
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+# Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
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+
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+if $tracelevel then {
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+ strace $tracelevel
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+}
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+
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+set testfile tls-sepdebug
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+set srcmainfile ${testfile}-main.c
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+set srcsharedfile ${testfile}-shared.c
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+
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+# DO NOT use ${objdir} obsolute reference here as we test relative directories
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+# below and the absolute pathnames must not get encoded to the binaries.
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+
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+set binmainfile ${testfile}-main
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+set binsharedfile ${testfile}-shared.so
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+set binshareddebugfile ${testfile}-shared.so.debug
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+
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+if { [gdb_compile_shlib "${srcdir}/${subdir}/${srcsharedfile}" "${binsharedfile}" {debug}] != "" } {
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+ untested "Couldn't compile test library"
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+ return -1
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+}
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+
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+# eu-strip(1) works fine but it is a part of `elfutils', not `binutils'.
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+if 0 then {
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+ remote_exec build "eu-strip -f ${binshareddebugfile} ${binsharedfile}"
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+} else {
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+ remote_exec build "objcopy --only-keep-debug ${binsharedfile} ${binshareddebugfile}"
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+ remote_exec build "objcopy --strip-debug ${binsharedfile}"
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+ remote_exec build "objcopy --add-gnu-debuglink=${binshareddebugfile} ${binsharedfile}"
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+}
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+
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+if { [gdb_compile_pthreads "${srcdir}/${subdir}/${srcmainfile}" "${binmainfile}" executable [list debug shlib=${binsharedfile}]] != "" } {
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+ untested "Couldn't compile test program"
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+ return -1
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+}
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+
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+# Get things started.
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+
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+# Test also the proper resolving of relative library names to absolute ones.
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+# \$PWD is easy - it is the absolute way
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+# ${subdir} would fail on "print var"
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+
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+foreach ld_library_path { \$PWD ${subdir} } name { absolute relative } {
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+
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+ gdb_exit
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+ gdb_start
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+ ###gdb_reinitialize_dir $srcdir/$subdir
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+
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+ gdb_test "set env LD_LIBRARY_PATH=$ld_library_path" \
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+ "" \
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+ "set env LD_LIBRARY_PATH is $name"
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+
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+ gdb_load ${binmainfile}
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+
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+ # For C programs, "start" should stop in main().
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+
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+ gdb_test "start" \
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+ "main \\(\\) at .*${srcmainfile}.*" \
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+ "start"
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+
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+ # Check for: Cannot find shared library `/usr/lib/debug/lib/libc-2.4.90.so.debug' in dynamic linker's load module list
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+ # as happens with TLS variables and `separate_debug_objfile_backlink'.
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+
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+ gdb_test "print var" \
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+ "\\\$1 = \[0-9\].*" \
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+ "print TLS variable from a shared library with $name-directory separate debug info file"
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+}
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