diff options
Diffstat (limited to 'nptl/sysdeps/unix/sysv/linux/x86_64/lowlevellock.S')
| -rw-r--r-- | nptl/sysdeps/unix/sysv/linux/x86_64/lowlevellock.S | 12 |
1 files changed, 3 insertions, 9 deletions
diff --git a/nptl/sysdeps/unix/sysv/linux/x86_64/lowlevellock.S b/nptl/sysdeps/unix/sysv/linux/x86_64/lowlevellock.S index 3c56daecf5..2c918d7622 100644 --- a/nptl/sysdeps/unix/sysv/linux/x86_64/lowlevellock.S +++ b/nptl/sysdeps/unix/sysv/linux/x86_64/lowlevellock.S @@ -51,24 +51,18 @@ __lll_mutex_lock_wait: movq %r10, %rsi /* movq $FUTEX_WAIT, %rsi */ cmpl %edx, %eax /* NB: %edx == 2 */ - je 1f - - movl %edx, %eax - xchgl %eax, (%rdi) /* NB: lock is implied */ - - testl %eax, %eax - je 2f + jne 2f 1: movq $SYS_futex, %rax syscall - movl %edx, %eax +2: movl %edx, %eax xchgl %eax, (%rdi) /* NB: lock is implied */ testl %eax, %eax jnz 1b -2: popq %rdx + popq %rdx popq %r10 retq .size __lll_mutex_lock_wait,.-__lll_mutex_lock_wait |