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2003-01-01  Ulrich Drepper  <drepper@redhat.com>

	* sysdeps/unix/sysv/linux/i386/i486/lowlevelrwlock.S: Avoid
	unnecessary zero offset when addressing MUTEX.
This commit is contained in:
Ulrich Drepper 2003-01-02 07:12:51 +00:00
parent 6ff19c8125
commit fd8979e483
2 changed files with 77 additions and 0 deletions
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5
nptl/ChangeLog
View File

@ -1,3 +1,8 @@
2003-01-01 Ulrich Drepper <drepper@redhat.com>
* sysdeps/unix/sysv/linux/i386/i486/lowlevelrwlock.S: Avoid
unnecessary zero offset when addressing MUTEX.
2002-12-31 Ulrich Drepper <drepper@redhat.com>
* sysdeps/unix/sysv/linux/fork.h: Add libc_hidden_proto for

72
nptl/sysdeps/unix/sysv/linux/i386/i486/lowlevelrwlock.S
View File

@ -61,7 +61,11 @@ __pthread_rwlock_rdlock:
/* Get the lock. */
movl $1, %eax
LOCK
#if MUTEX == 0
xaddl %eax, (%ebx)
#else
xaddl %eax, MUTEX(%ebx)
#endif
testl %eax, %eax
jne 1f
@ -77,7 +81,11 @@ __pthread_rwlock_rdlock:
je 4f
LOCK
#if MUTEX == 0
decl (%ebx)
#else
decl MUTEX(%ebx)
#endif
jne 10f
11: addl $READERS_WAKEUP-MUTEX, %ebx
@ -90,7 +98,11 @@ __pthread_rwlock_rdlock:
/* Reget the lock. */
movl $1, %eax
LOCK
#if MUTEX == 0
xaddl %eax, (%ebx)
#else
xaddl %eax, MUTEX(%ebx)
#endif
testl %eax, %eax
jne 12f
@ -103,7 +115,11 @@ __pthread_rwlock_rdlock:
incl NR_READERS(%ebx)
je 8f
9: LOCK
#if MUTEX == 0
decl (%ebx)
#else
decl MUTEX(%ebx)
#endif
jne 6f
7:
@ -165,7 +181,11 @@ pthread_rwlock_timedrdlock:
/* Get the lock. */
movl $1, %eax
LOCK
#if MUTEX == 0
xaddl %eax, (%ebp)
#else
xaddl %eax, MUTEX(%ebp)
#endif
testl %eax, %eax
jne 1f
@ -181,7 +201,11 @@ pthread_rwlock_timedrdlock:
je 4f
LOCK
#if MUTEX == 0
decl (%ebp)
#else
decl MUTEX(%ebp)
#endif
jne 10f
/* Get current time. */
@ -219,7 +243,11 @@ pthread_rwlock_timedrdlock:
/* Reget the lock. */
movl $1, %eax
LOCK
#if MUTEX == 0
xaddl %eax, (%ebp)
#else
xaddl %eax, MUTEX(%ebp)
#endif
testl %eax, %eax
jne 12f
@ -235,7 +263,11 @@ pthread_rwlock_timedrdlock:
incl NR_READERS(%ebp)
je 8f
9: LOCK
#if MUTEX == 0
decl (%ebp)
#else
decl MUTEX(%ebp)
#endif
jne 6f
7: movl %ecx, %eax
@ -300,7 +332,11 @@ __pthread_rwlock_wrlock:
/* Get the lock. */
movl $1, %eax
LOCK
#if MUTEX == 0
xaddl %eax, (%ebx)
#else
xaddl %eax, MUTEX(%ebx)
#endif
testl %eax, %eax
jne 1f
@ -314,7 +350,11 @@ __pthread_rwlock_wrlock:
je 4f
LOCK
#if MUTEX == 0
decl (%ebx)
#else
decl MUTEX(%ebx)
#endif
jne 10f
11: addl $WRITERS_WAKEUP-MUTEX, %ebx
@ -327,7 +367,11 @@ __pthread_rwlock_wrlock:
/* Reget the lock. */
movl $1, %eax
LOCK
#if MUTEX == 0
xaddl %eax, (%ebx)
#else
xaddl %eax, MUTEX(%ebx)
#endif
testl %eax, %eax
jne 12f
@ -339,7 +383,11 @@ __pthread_rwlock_wrlock:
movl %gs:8, %eax
movl %eax, WRITER(%ebx)
9: LOCK
#if MUTEX == 0
decl (%ebx)
#else
decl MUTEX(%ebx)
#endif
jne 6f
7:
@ -394,7 +442,11 @@ pthread_rwlock_timedwrlock:
/* Get the lock. */
movl $1, %eax
LOCK
#if MUTEX == 0
xaddl %eax, (%ebp)
#else
xaddl %eax, MUTEX(%ebp)
#endif
testl %eax, %eax
jne 1f
@ -408,7 +460,11 @@ pthread_rwlock_timedwrlock:
je 4f
LOCK
#if MUTEX == 0
decl (%ebp)
#else
decl MUTEX(%ebp)
#endif
jne 10f
/* Get current time. */
@ -446,7 +502,11 @@ pthread_rwlock_timedwrlock:
/* Reget the lock. */
movl $1, %eax
LOCK
#if MUTEX == 0
xaddl %eax, (%ebp)
#else
xaddl %eax, MUTEX(%ebp)
#endif
testl %eax, %eax
jne 12f
@ -461,7 +521,11 @@ pthread_rwlock_timedwrlock:
movl %gs:8, %eax
movl %eax, WRITER(%ebp)
9: LOCK
#if MUTEX == 0
decl (%ebp)
#else
decl MUTEX(%ebp)
#endif
jne 6f
7: movl %ecx, %eax
@ -521,7 +585,11 @@ __pthread_rwlock_unlock:
/* Get the lock. */
movl $1, %eax
LOCK
#if MUTEX == 0
xaddl %eax, (%edi)
#else
xaddl %eax, MUTEX(%edi)
#endif
testl %eax, %eax
jne 1f
@ -550,7 +618,11 @@ __pthread_rwlock_unlock:
ENTER_KERNEL
6: LOCK
#if MUTEX == 0
decl (%edi)
#else
decl MUTEX(%edi)
#endif
jne 3f
4: xorl %eax, %eax