diff options
Diffstat (limited to 'nptl/sysdeps/unix/sysv/linux/x86_64/pthread_once.S')
| -rw-r--r-- | nptl/sysdeps/unix/sysv/linux/x86_64/pthread_once.S | 45 |
1 files changed, 14 insertions, 31 deletions
diff --git a/nptl/sysdeps/unix/sysv/linux/x86_64/pthread_once.S b/nptl/sysdeps/unix/sysv/linux/x86_64/pthread_once.S index 9db5516913..3fec0f4205 100644 --- a/nptl/sysdeps/unix/sysv/linux/x86_64/pthread_once.S +++ b/nptl/sysdeps/unix/sysv/linux/x86_64/pthread_once.S @@ -1,4 +1,4 @@ -/* Copyright (C) 2002, 2003, 2005 Free Software Foundation, Inc. +/* Copyright (C) 2002, 2003 Free Software Foundation, Inc. This file is part of the GNU C Library. Contributed by Ulrich Drepper <drepper@redhat.com>, 2002. @@ -74,23 +74,17 @@ __pthread_once: jnz 3f /* Different for generation -> run initializer. */ /* Somebody else got here first. Wait. */ -#if FUTEX_WAIT == 0 - xorl %esi, %esi -#else - movl $FUTEX_WAIT, %esi -#endif - movl $SYS_futex, %eax + movq %r10, %rsi /* movq $FUTEX_WAIT, %rsi */ + movq $SYS_futex, %rax syscall jmp 6b /* Preserve the pointer to the control variable. */ 3: pushq %rdi .Lpush_rdi: - pushq %rdi -.Lpush_rdi2: .LcleanupSTART: - callq *16(%rsp) + callq *8(%rsp) .LcleanupEND: /* Get the control variable address back. */ @@ -101,18 +95,15 @@ __pthread_once: LOCK incl (%rdi) - addq $8, %rsp -.Ladd1: - /* Wake up all other threads. */ movl $0x7fffffff, %edx movl $FUTEX_WAKE, %esi - movl $SYS_futex, %eax + movq $SYS_futex, %rax syscall 4: addq $8, %rsp -.Ladd2: - xorl %eax, %eax +.Ladd: + xorq %rax, %rax retq .size __pthread_once,.-__pthread_once @@ -133,8 +124,8 @@ clear_once_control: movl $0, (%rdi) movl $0x7fffffff, %edx - movl $FUTEX_WAKE, %esi - movl $SYS_futex, %eax + movq $FUTEX_WAKE, %rsi + movq $SYS_futex, %rax syscall movq %r8, %rdi @@ -229,28 +220,20 @@ clear_once_control: .byte 14 # DW_CFA_def_cfa_offset .uleb128 24 .byte 4 # DW_CFA_advance_loc4 - .long .Lpush_rdi2-.Lpush_rdi - .byte 14 # DW_CFA_def_cfa_offset - .uleb128 32 - .byte 4 # DW_CFA_advance_loc4 - .long .Lpop_rdi-.Lpush_rdi2 - .byte 14 # DW_CFA_def_cfa_offset - .uleb128 24 - .byte 4 # DW_CFA_advance_loc4 - .long .Ladd1-.Lpop_rdi + .long .Lpop_rdi-.Lpush_rdi .byte 14 # DW_CFA_def_cfa_offset .uleb128 16 .byte 4 # DW_CFA_advance_loc4 - .long .Ladd2-.Ladd1 + .long .Ladd-.Lpop_rdi .byte 14 # DW_CFA_def_cfa_offset .uleb128 8 .byte 4 # DW_CFA_advance_loc4 - .long clear_once_control-.Ladd2 + .long clear_once_control-.Ladd .byte 14 # DW_CFA_def_cfa_offset - .uleb128 32 + .uleb128 24 #if 0 .byte 4 # DW_CFA_advance_loc4 - .long .Lpop_rdi3-clear_once_control + .long .Lpop_rdi2-clear_once_control .byte 14 # DW_CFA_def_cfa_offset .uleb128 16 #endif |