diff options
Diffstat (limited to 'nptl/sysdeps')
| -rw-r--r-- | nptl/sysdeps/unix/sysv/linux/i386/i486/lowlevellock.S | 16 |
1 files changed, 9 insertions, 7 deletions
diff --git a/nptl/sysdeps/unix/sysv/linux/i386/i486/lowlevellock.S b/nptl/sysdeps/unix/sysv/linux/i386/i486/lowlevellock.S index c73970d..c5ec154 100644 --- a/nptl/sysdeps/unix/sysv/linux/i386/i486/lowlevellock.S +++ b/nptl/sysdeps/unix/sysv/linux/i386/i486/lowlevellock.S @@ -41,16 +41,18 @@ .hidden __lll_mutex_lock_wait .align 16 __lll_mutex_lock_wait: - pushl %esi - pushl %ebx pushl %edx + pushl %ebx + pushl %esi + movl $2, %edx movl %ecx, %ebx xorl %esi, %esi /* No timeout. */ xorl %ecx, %ecx /* movl $FUTEX_WAIT, %ecx */ - movl $2, %edx -1: +1: cmpl %edx, %eax /* NB: %edx == 2 */ + je 3f + movl $1, %eax LOCK cmpxchgl %edx, (%ebx) @@ -58,7 +60,7 @@ __lll_mutex_lock_wait: testl %eax, %eax je 2f - movl $SYS_futex, %eax +3: movl $SYS_futex, %eax ENTER_KERNEL xorl %eax, %eax @@ -67,9 +69,9 @@ __lll_mutex_lock_wait: jnz,pn 1b - popl %edx - popl %ebx popl %esi + popl %ebx + popl %edx ret .size __lll_mutex_lock_wait,.-__lll_mutex_lock_wait |