nptl/sem_post.s

   1         .text
   2         .section        .rodata.str1.8,"aMS",@progbits,1
   3         .align 8
   4 .LC0:
   5         .string "The futex facility returned an unexpected error code.\n"
   6         .text
   7         .p2align 4,,15
   8         .globl  __new_sem_post
   9         .type   __new_sem_post, @function
  10 __new_sem_post:
  11         movl    8(%rdi), %esi
  12         movq    (%rdi), %rax
  13 .L4:
  14         cmpl    $2147483647, %eax
  15         je      .L17
  16         leaq    1(%rax), %rdx
  17         lock cmpxchgq   %rdx, (%rdi)
  18         jne     .L4
  19         shrq    $32, %rax
  20         testq   %rax, %rax
  21         je      .L7
  22         xorb    $-127, %sil
  23         xorl    %r10d, %r10d
  24         movl    $1, %edx
  25         movl    $202, %eax
  26 #APP
  27 # 209 "../sysdeps/nptl/futex-internal.h" 1
  28         syscall
  29
  30 # 0 "" 2
  31 #NO_APP
  32         cmpq    $-4096, %rax
  33         ja      .L18
  34 .L7:
  35         xorl    %eax, %eax
  36         ret
  37         .p2align 4,,10
  38         .p2align 3
  39 .L18:
  40         cmpl    $-22, %eax
  41         je      .L7
  42         cmpl    $-14, %eax
  43         je      .L7
  44         leaq    .LC0(%rip), %rdi
  45         subq    $8, %rsp
  46         call    __libc_fatal@PLT
  47         .p2align 4,,10
  48         .p2align 3
  49 .L17:
  50         movq    errno@gottpoff(%rip), %rax
  51         movl    $75, %fs:(%rax)
  52         movl    $-1, %eax
  53         ret
  54         .size   __new_sem_post, .-__new_sem_post
  55         .weak   sem_post
  56         .set    sem_post,__new_sem_post