diff options
| author | Ulrich Drepper <drepper@redhat.com> | 2003-09-21 07:40:24 +0000 |
|---|---|---|
| committer | Ulrich Drepper <drepper@redhat.com> | 2003-09-21 07:40:24 +0000 |
| commit | 71451de2f1245b21ce3ba407068c453a866c03d6 (patch) | |
| tree | 6646149e32cd4e762f758fa4796a62aab0ea8adf /nptl/sysdeps/unix/sysv/linux/i386/i486/pthread_rwlock_rdlock.S | |
| parent | 56a4aa9886dc1145f8feac66b66216a44cb092c1 (diff) | |
Update.
2003-09-21 Ulrich Drepper <drepper@redhat.com>
* sysdeps/unix/sysv/linux/i386/lowlevellock.h: Completely revamp the
locking macros. No distinction between normal and mutex locking
anymore.
* sysdeps/unix/sysv/linux/i386/i486/lowlevellock.S: Rewrite mutex
locking. Merge bits from lowlevelmutex.S we still need.
* sysdeps/unix/sysv/linux/i386/i486/lowlevelmutex.S: Removed.
* Makefile (routines): Remove libc-lowlevelmutex.
(libpthread-rountines): Remove lowlevelmutex.
* pthread_barrier_wait.S: Adjust for new mutex implementation.
* pthread_cond_broadcast.S: Likewise.
* pthread_cond_timedwait.S: Likewise.
* pthread_cond_wait.S: Likewise.
* pthread_rwlock_rdlock.S: Likewise.
* pthread_rwlock_timedrdlock.S: Likewise.
* pthread_rwlock_timedwrlock.S: Likewise.
* pthread_rwlock_unlock.S: Likewise.
* pthread_rwlock_wrlock.S: Likewise.
* pthread_cond_signal.S: Likewise. Don't use requeue.
Diffstat (limited to 'nptl/sysdeps/unix/sysv/linux/i386/i486/pthread_rwlock_rdlock.S')
| -rw-r--r-- | nptl/sysdeps/unix/sysv/linux/i386/i486/pthread_rwlock_rdlock.S | 14 |
1 files changed, 8 insertions, 6 deletions
diff --git a/nptl/sysdeps/unix/sysv/linux/i386/i486/pthread_rwlock_rdlock.S b/nptl/sysdeps/unix/sysv/linux/i386/i486/pthread_rwlock_rdlock.S index 81d9766056..1c149433f0 100644 --- a/nptl/sysdeps/unix/sysv/linux/i386/i486/pthread_rwlock_rdlock.S +++ b/nptl/sysdeps/unix/sysv/linux/i386/i486/pthread_rwlock_rdlock.S @@ -46,12 +46,13 @@ __pthread_rwlock_rdlock: movl 12(%esp), %ebx /* Get the lock. */ - movl $1, %eax + movl $1, %edx + xorl %eax, %eax LOCK #if MUTEX == 0 - xaddl %eax, (%ebx) + cmpxchgl %edx, (%ebx) #else - xaddl %eax, MUTEX(%ebx) + cmpxchgl %edx, MUTEX(%ebx) #endif testl %eax, %eax jne 1f @@ -85,12 +86,13 @@ __pthread_rwlock_rdlock: subl $READERS_WAKEUP, %ebx /* Reget the lock. */ - movl $1, %eax + movl $1, %edx + xorl %eax, %eax LOCK #if MUTEX == 0 - xaddl %eax, (%ebx) + cmpxchgl %edx, (%ebx) #else - xaddl %eax, MUTEX(%ebx) + cmpxchgl %edx, MUTEX(%ebx) #endif testl %eax, %eax jne 12f |