5876f5032f
I have posted: TLS variables access for -static -lpthread executables https://sourceware.org/ml/libc-help/2014-03/msg00024.html and the GDB patch below has been confirmed as OK for current glibcs. Further work should be done for newer glibcs: Improve TLS variables glibc compatibility https://sourceware.org/bugzilla/show_bug.cgi?id=16954 Still the patch below implements the feature in a fully functional way backward compatible with current glibcs, it depends on the following glibc source line: csu/libc-tls.c main_map->l_tls_modid = 1; gdb/ 2014-05-21 Jan Kratochvil <jan.kratochvil@redhat.com> Fix TLS access for -static -pthread. * linux-thread-db.c (struct thread_db_info): Add td_thr_tlsbase_p. (try_thread_db_load_1): Initialize it. (thread_db_get_thread_local_address): Call it if LM is zero. * target.c (target_translate_tls_address): Remove LM_ADDR zero check. * target.h (struct target_ops) (to_get_thread_local_address): Add load_module_addr comment. gdb/gdbserver/ 2014-05-21 Jan Kratochvil <jan.kratochvil@redhat.com> Fix TLS access for -static -pthread. * gdbserver/thread-db.c (struct thread_db): Add td_thr_tlsbase_p. (thread_db_get_tls_address): Call it if LOAD_MODULE is zero. (thread_db_load_search, try_thread_db_load_1): Initialize it. gdb/testsuite/ 2014-05-21 Jan Kratochvil <jan.kratochvil@redhat.com> Fix TLS access for -static -pthread. * gdb.threads/staticthreads.c <HAVE_TLS> (tlsvar): New. <HAVE_TLS> (thread_function, main): Initialize it. * gdb.threads/staticthreads.exp: Try gdb_compile_pthreads for $have_tls. Add clean_restart. <$have_tls != "">: Check TLSVAR. Message-ID: <20140410115204.GB16411@host2.jankratochvil.net>
111 lines
2.7 KiB
Text
111 lines
2.7 KiB
Text
# static.exp -- test script, for GDB, the GNU debugger.
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# Copyright 2004-2014 Free Software Foundation, Inc.
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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 3 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, see <http://www.gnu.org/licenses/>.
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# Based on manythreads written by Jeff Johnston, contributed by Red
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# Hat.
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standard_testfile
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set static_flag "-static"
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foreach have_tls { "-DHAVE_TLS" "" } {
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if {[gdb_compile_pthreads "${srcdir}/${subdir}/${srcfile}" "${binfile}" \
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executable \
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[list debug "additional_flags=${static_flag} ${have_tls}" \
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]] == "" } {
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break
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}
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if { $have_tls == "" } {
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return -1
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}
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}
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clean_restart ${binfile}
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gdb_test_no_output "set print sevenbit-strings"
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# See if the static multi-threaded program runs.
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runto_main
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gdb_test "break sem_post"
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set test "Continue to main's call of sem_post"
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gdb_test_multiple "continue" "$test" {
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-re "Breakpoint .*, .*sem_post .*$gdb_prompt " {
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pass "$test"
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}
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-re "Program received signal .*$gdb_prompt " {
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kfail gdb/1328 "$test"
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}
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}
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# See if handle SIG32 helps (a little) with a static multi-threaded
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# program.
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set sig "SIG32"
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# SIGRTMIN is 37 on hppa-linux and hpux
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if [istarget hppa*-*-*] {
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set sig "SIG37"
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}
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rerun_to_main
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gdb_test "handle $sig nostop noprint pass"
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set test "Handle $sig helps"
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gdb_test "continue" " .*sem_post .*" "handle $sig helps"
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# See if info threads produces anything approaching a thread list.
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set test "info threads"
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gdb_test_multiple "info threads" "$test" {
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-re " Thread .*$gdb_prompt " {
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pass "$test"
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}
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-re "$gdb_prompt " {
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kfail gdb/1328 "$test"
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}
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}
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# Check that the program can be quit.
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set test "GDB exits with static thread program"
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gdb_test_multiple "quit" "$test" {
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-re "Quit anyway\\? \\(y or n\\) $" {
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send_gdb "y\n"
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exp_continue
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}
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eof {
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pass "$test"
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}
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}
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clean_restart ${binfile}
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if { "$have_tls" != "" } {
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if ![runto_main] {
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return -1
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}
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gdb_breakpoint [gdb_get_line_number "tlsvar-is-set"]
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gdb_continue_to_breakpoint "tlsvar-is-set" ".* tlsvar-is-set .*"
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gdb_test "p tlsvar" " = 2" "tlsvar in thread"
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gdb_test "thread 1" ".*"
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# Unwind from pthread_join.
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gdb_test "up 10" " in main .*"
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gdb_test "p tlsvar" " = 1" "tlsvar in main"
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}
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