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| author | Ulrich Drepper <drepper@redhat.com> | 2000-04-11 17:03:03 +0000 |
|---|---|---|
| committer | Ulrich Drepper <drepper@redhat.com> | 2000-04-11 17:03:03 +0000 |
| commit | de26253715b91e7fd4a9854fe836baef86dbc7af (patch) | |
| tree | fad01a7fbfc9ebc7121551e0d8877c3fed149011 /linuxthreads/sysdeps/sparc/sparc32 | |
| parent | e7c036b39ef12abc7ff131982df75e3ec35c0f31 (diff) | |
| download | glibc-de26253715b91e7fd4a9854fe836baef86dbc7af.tar.gz glibc-de26253715b91e7fd4a9854fe836baef86dbc7af.tar.xz glibc-de26253715b91e7fd4a9854fe836baef86dbc7af.zip | |
Upadte.
2000-04-11 Ulrich Drepper <drepper@redhat.com> * internals.h: Define MEMORY_BARRIER as empty if not defined already. * spinlock.c (__pthread_lock): Add memory barriers. (__pthread_unlock): Likewise. * sysdeps/alpha/pt-machine.h (MEMORY_BARRIER): Define using mb instruction. (RELEASE): Not needed anymore. (__compare_and_swap): Mark asm as modifying memory. * sysdeps/powerpc/pt-machine.h (sync): Remove. Replace with definition of MEMORY_BARRIER. (__compare_and_swap): Use MEMORY_BARRIER instead of sync. * sysdeps/sparc/sparc32/pt-machine.h (RELEASE): Not needed anymore. (MEMORY_BARRIER): Define using stbar. * sysdeps/sparc/sparc64/pt-machine.h (MEMORY_BARRIER): Define using stbar. (__compare_and_swap): Use MEMORY_BARRIER to ensure ordering. Patch by Xavier Leroy <Xavier.Leroy@inria.fr> based on comments by Mike Burrows <m3b@pa.dec.com>.
Diffstat (limited to 'linuxthreads/sysdeps/sparc/sparc32')
| -rw-r--r-- | linuxthreads/sysdeps/sparc/sparc32/pt-machine.h | 5 |
1 files changed, 2 insertions, 3 deletions
diff --git a/linuxthreads/sysdeps/sparc/sparc32/pt-machine.h b/linuxthreads/sysdeps/sparc/sparc32/pt-machine.h index 69af8579aa..ddf4932af9 100644 --- a/linuxthreads/sysdeps/sparc/sparc32/pt-machine.h +++ b/linuxthreads/sysdeps/sparc/sparc32/pt-machine.h @@ -37,9 +37,8 @@ testandset (int *spinlock) } -/* Spinlock release; default is just set to zero. */ -#define RELEASE(spinlock) \ - __asm__ __volatile__("stbar; stb %1,%0" : "=m"(*(spinlock)) : "r"(0)); +/* Memory barrier; default is to do nothing */ +#define MEMORY_BARRIER() __asm__ __volatile__("stbar" : : : "memory") /* Get some notion of the current stack. Need not be exactly the top |