diff options
Diffstat (limited to 'sysdeps/x86_64/nptl/tls.h')
-rw-r--r-- | sysdeps/x86_64/nptl/tls.h | 7 |
1 files changed, 6 insertions, 1 deletions
diff --git a/sysdeps/x86_64/nptl/tls.h b/sysdeps/x86_64/nptl/tls.h index a08bf972de..ccb5f24d92 100644 --- a/sysdeps/x86_64/nptl/tls.h +++ b/sysdeps/x86_64/nptl/tls.h @@ -180,11 +180,16 @@ _Static_assert (offsetof (tcbhead_t, __glibc_unused2) == 0x80, assignments like pthread_descr self = thread_self(); do not get optimized away. */ -# define THREAD_SELF \ +# if __GNUC_PREREQ (6, 0) +# define THREAD_SELF \ + (*(struct pthread *__seg_fs *) offsetof (struct pthread, header.self)) +# else +# define THREAD_SELF \ ({ struct pthread *__self; \ asm ("mov %%fs:%c1,%0" : "=r" (__self) \ : "i" (offsetof (struct pthread, header.self))); \ __self;}) +# endif /* Magic for libthread_db to know how to do THREAD_SELF. */ # define DB_THREAD_SELF_INCLUDE <sys/reg.h> /* For the FS constant. */ |