diff options
| author | Ulrich Drepper <drepper@redhat.com> | 2009-08-22 17:58:04 -0700 |
|---|---|---|
| committer | Ulrich Drepper <drepper@redhat.com> | 2009-08-22 17:58:04 -0700 |
| commit | cd16986ee3a4fa92c7e6b3f5a601a635a7cdd21a (patch) | |
| tree | 2d7e0db615f72fa98a21fe806204e49e0a0c2a04 /nptl/sysdeps/unix/sysv/linux/x86_64/pthread_rwlock_unlock.S | |
| parent | 15efafdf07789322219cc8f938ac758f932fe208 (diff) | |
Rvert accidental checkins.
Diffstat (limited to 'nptl/sysdeps/unix/sysv/linux/x86_64/pthread_rwlock_unlock.S')
| -rw-r--r-- | nptl/sysdeps/unix/sysv/linux/x86_64/pthread_rwlock_unlock.S | 92 |
1 files changed, 0 insertions, 92 deletions
diff --git a/nptl/sysdeps/unix/sysv/linux/x86_64/pthread_rwlock_unlock.S b/nptl/sysdeps/unix/sysv/linux/x86_64/pthread_rwlock_unlock.S index 1953637055..03391d0fc2 100644 --- a/nptl/sysdeps/unix/sysv/linux/x86_64/pthread_rwlock_unlock.S +++ b/nptl/sysdeps/unix/sysv/linux/x86_64/pthread_rwlock_unlock.S @@ -30,97 +30,6 @@ .align 16 __pthread_rwlock_unlock: cfi_startproc - movq NRW_WORD(%rdi), %rax - movq $NRW_WL, %rdx - testq %rdx, %rax - jnz .Lunlock_writer - -.Lagain: - movq $-NRW_RC, %rdx - addq %rax, %rdx - movq $NRW_RC_MASK, %rcx - testq %rcx, %rdx - jz .Llast_reader - -1: LOCK - cmpxchgq %rdx, NRW_WORD(%rdi) - jnz .Lagain - - xorl %eax, %eax - ret - -.Llast_reader: - movq $NRW_WW_MASK, %rcx - testq %rax, %rcx - jz 1b - - movq $NRW_AR, %rcx - xorl %esi, %esi - testq $NRW_WP, %rax - cmovz %esi, %ecx - orq %rcx, %rdx - LOCK - cmpxchgq %rdx, NRW_WORD(%rdi) - jnz .Lagain - -.Lwake_writer: - movl $1, %edx - movl $NRW_W_WAKEUP, %r9d -.Lwake: movl $(FUTEX_WAKE_BITSET|FUTEX_PRIVATE_FLAG), %esi - xorl PSHARED(%rdi), %esi - leaq NRW_WORD(%rdi), %rdi - movl $__NR_futex, %eax - syscall - -.Lout: xorl %eax, %eax - ret - -.Lunlock_writer: - movq %rax, %rdx - movq $NRW_WW_MASK, %rcx - testq %rcx, %rax - jz .Lno_writers - movq $NRW_RC_MASK, %rcx - testq %rcx, %rax - jz 2f - testq $NRW_WP, %rax - jz .Lwake_readers - -2: movq $~NRW_WL, %rcx - andq %rcx, %rdx - LOCK - cmpxchgq %rdx, NRW_WORD(%rdi) - jnz .Lunlock_writer - jmp .Lwake_writer - -.Lno_writers: - movq $~(NRW_WL|NRW_AR), %rcx - andq %rcx, %rdx - LOCK - cmpxchgq %rdx, NRW_WORD(%rdi) - jnz .Lunlock_writer - - movq $(NRW_RW_MASK|NRW_RC_MASK), %rcx - testq %rcx, %rax - jz .Lout - - movl $0x7fffffff, %edx - movl $NRW_R_WAKEUP, %r9d - jmp .Lwake - -.Lwake_readers: - movq $~NRW_WL, %rcx - andq %rcx, %rdx - LOCK - cmpxchgq %rdx, NRW_WORD(%rdi) - jnz .Lunlock_writer - - movl $0x7fffffff, %edx - movl $NRW_R_WAKEUP, %r9d - jmp .Lwake - - -#if 0 /* Get the lock. */ movl $1, %esi xorl %eax, %eax @@ -211,7 +120,6 @@ __pthread_rwlock_unlock: #endif callq __lll_unlock_wake jmp 8b -#endif cfi_endproc .size __pthread_rwlock_unlock,.-__pthread_rwlock_unlock |