diff options
Diffstat (limited to 'nptl')
| -rw-r--r-- | nptl/ChangeLog | 5 | ||||
| -rw-r--r-- | nptl/sysdeps/unix/sysv/linux/i386/i486/lowlevelrwlock.S | 72 |
2 files changed, 77 insertions, 0 deletions
diff --git a/nptl/ChangeLog b/nptl/ChangeLog index e61e8b5a13..764ab23cd9 100644 --- a/nptl/ChangeLog +++ b/nptl/ChangeLog @@ -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 diff --git a/nptl/sysdeps/unix/sysv/linux/i386/i486/lowlevelrwlock.S b/nptl/sysdeps/unix/sysv/linux/i386/i486/lowlevelrwlock.S index 4e021dca29..72df31b40b 100644 --- a/nptl/sysdeps/unix/sysv/linux/i386/i486/lowlevelrwlock.S +++ b/nptl/sysdeps/unix/sysv/linux/i386/i486/lowlevelrwlock.S @@ -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 |