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| author | Jan Kratochvil <jan.kratochvil@redhat.com> | 2014-05-21 16:25:53 +0200 |
|---|---|---|
| committer | Jan Kratochvil <jan.kratochvil@redhat.com> | 2014-05-21 16:25:53 +0200 |
| commit | 5876f5032f60c45c4bd19e7ea7d0c14d0346b93e (patch) | |
| tree | 52545ba82ab64b43cdf7f0765d4764c39bdeac06 /gdb/testsuite/gdb.threads/staticthreads.c | |
| parent | 0256a6ac4b25d56da14cbbe3cda9977f9c7c13eb (diff) | |
| download | binutils-5876f5032f60c45c4bd19e7ea7d0c14d0346b93e.zip binutils-5876f5032f60c45c4bd19e7ea7d0c14d0346b93e.tar.gz binutils-5876f5032f60c45c4bd19e7ea7d0c14d0346b93e.tar.bz2 | |
Fix TLS access for -static -pthread
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>
Diffstat (limited to 'gdb/testsuite/gdb.threads/staticthreads.c')
| -rw-r--r-- | gdb/testsuite/gdb.threads/staticthreads.c | 12 |
1 files changed, 11 insertions, 1 deletions
diff --git a/gdb/testsuite/gdb.threads/staticthreads.c b/gdb/testsuite/gdb.threads/staticthreads.c index e834d7f..5c8eabe 100644 --- a/gdb/testsuite/gdb.threads/staticthreads.c +++ b/gdb/testsuite/gdb.threads/staticthreads.c @@ -28,10 +28,17 @@ sem_t semaphore; +#ifdef HAVE_TLS +__thread int tlsvar; +#endif + void * thread_function (void *arg) { - printf ("Thread executing\n"); +#ifdef HAVE_TLS + tlsvar = 2; +#endif + printf ("Thread executing\n"); /* tlsvar-is-set */ while (sem_wait (&semaphore) != 0) { if (errno != EINTR) @@ -57,6 +64,9 @@ main (int argc, char **argv) return -1; } +#ifdef HAVE_TLS + tlsvar = 1; +#endif /* Create a thread, wait for it to complete. */ { |