stdio-common/ftrylockfile.s

   1         .text
   2         .p2align 4,,15
   3         .globl  __ftrylockfile
   4         .type   __ftrylockfile, @function
   5 __ftrylockfile:
   6         movq    136(%rdi), %rdx
   7         movq    %fs:16, %rcx
   8         cmpq    %rcx, 8(%rdx)
   9         je      .L2
  10 #APP
  11 # 28 "../sysdeps/pthread/ftrylockfile.c" 1
  12         movl %fs:24,%eax
  13 # 0 "" 2
  14 #NO_APP
  15         testl   %eax, %eax
  16         jne     .L3
  17         movl    $1, %esi
  18 #APP
  19 # 47 "../sysdeps/unix/sysv/linux/x86/lowlevellock.h" 1
  20         cmpxchgl %esi, (%rdx)
  21 # 0 "" 2
  22 #NO_APP
  23 .L4:
  24         testl   %eax, %eax
  25         jne     .L6
  26         movq    136(%rdi), %rdx
  27         movq    %rcx, 8(%rdx)
  28         movl    $1, 4(%rdx)
  29         ret
  30         .p2align 4,,10
  31         .p2align 3
  32 .L6:
  33         movl    $16, %eax
  34         ret
  35         .p2align 4,,10
  36         .p2align 3
  37 .L2:
  38         addl    $1, 4(%rdx)
  39         xorl    %eax, %eax
  40         ret
  41         .p2align 4,,10
  42         .p2align 3
  43 .L3:
  44         xorl    %eax, %eax
  45         movl    $1, %esi
  46         lock cmpxchgl   %esi, (%rdx)
  47         setne   %al
  48         movzbl  %al, %eax
  49         jmp     .L4
  50         .size   __ftrylockfile, .-__ftrylockfile
  51         .weak   ftrylockfile
  52         .set    ftrylockfile,__ftrylockfile
  53         .globl  _IO_ftrylockfile
  54         .set    _IO_ftrylockfile,__ftrylockfile