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| author | Florian Weimer <fweimer@redhat.com> | 2021-12-09 09:49:32 +0100 |
|---|---|---|
| committer | Florian Weimer <fweimer@redhat.com> | 2021-12-09 09:49:32 +0100 |
| commit | 95e114a0919d844d8fe07839cb6538b7f5ee920e (patch) | |
| tree | 530964270c0a6baf1dd741e00c4f5f205631d70e /sysdeps/nptl | |
| parent | 8d1927d8dc5aad0f01c929123086be3a5b799d18 (diff) | |
| download | glibc-95e114a0919d844d8fe07839cb6538b7f5ee920e.zip glibc-95e114a0919d844d8fe07839cb6538b7f5ee920e.tar.gz glibc-95e114a0919d844d8fe07839cb6538b7f5ee920e.tar.bz2 | |
nptl: Add rseq registration
The rseq area is placed directly into struct pthread. rseq
registration failure is not treated as an error, so it is possible
that threads run with inconsistent registration status.
<sys/rseq.h> is not yet installed as a public header.
Co-Authored-By: Mathieu Desnoyers <mathieu.desnoyers@efficios.com>
Reviewed-by: Szabolcs Nagy <szabolcs.nagy@arm.com>
Reviewed-by: Siddhesh Poyarekar <siddhesh@sourceware.org>
Diffstat (limited to 'sysdeps/nptl')
| -rw-r--r-- | sysdeps/nptl/dl-tls_init_tp.c | 8 |
1 files changed, 6 insertions, 2 deletions
diff --git a/sysdeps/nptl/dl-tls_init_tp.c b/sysdeps/nptl/dl-tls_init_tp.c index ca494dd..fedb876 100644 --- a/sysdeps/nptl/dl-tls_init_tp.c +++ b/sysdeps/nptl/dl-tls_init_tp.c @@ -21,6 +21,7 @@ #include <list.h> #include <pthreadP.h> #include <tls.h> +#include <rseq-internal.h> #ifndef __ASSUME_SET_ROBUST_LIST bool __nptl_set_robust_list_avail; @@ -57,11 +58,12 @@ __tls_pre_init_tp (void) void __tls_init_tp (void) { + struct pthread *pd = THREAD_SELF; + /* Set up thread stack list management. */ - list_add (&THREAD_SELF->list, &GL (dl_stack_user)); + list_add (&pd->list, &GL (dl_stack_user)); /* Early initialization of the TCB. */ - struct pthread *pd = THREAD_SELF; pd->tid = INTERNAL_SYSCALL_CALL (set_tid_address, &pd->tid); THREAD_SETMEM (pd, specific[0], &pd->specific_1stblock[0]); THREAD_SETMEM (pd, user_stack, true); @@ -90,6 +92,8 @@ __tls_init_tp (void) } } + rseq_register_current_thread (pd); + /* Set initial thread's stack block from 0 up to __libc_stack_end. It will be bigger than it actually is, but for unwind.c/pt-longjmp.c purposes this is good enough. */ |