dirent/seekdir.s

   1         .text
   2         .p2align 4,,15
   3         .globl  seekdir
   4         .type   seekdir, @function
   5 seekdir:
   6         pushq   %r12
   7         pushq   %rbp
   8         movq    %rsi, %rbp
   9         pushq   %rbx
  10         movq    %rdi, %rbx
  11 #APP
  12 # 29 "../sysdeps/unix/sysv/linux/seekdir.c" 1
  13         movl %fs:24,%eax
  14 # 0 "" 2
  15 #NO_APP
  16         testl   %eax, %eax
  17         leaq    4(%rdi), %r12
  18         jne     .L2
  19         movl    $1, %edx
  20 #APP
  21 # 47 "../sysdeps/unix/sysv/linux/x86/lowlevellock.h" 1
  22         cmpxchgl %edx, 4(%rdi)
  23 # 0 "" 2
  24 #NO_APP
  25 .L3:
  26         movl    (%rbx), %edi
  27         xorl    %edx, %edx
  28         movq    %rbp, %rsi
  29         call    __lseek
  30         movq    $0, 16(%rbx)
  31         movq    $0, 24(%rbx)
  32         movq    %rbp, 32(%rbx)
  33 #APP
  34 # 34 "../sysdeps/unix/sysv/linux/seekdir.c" 1
  35         movl %fs:24,%eax
  36 # 0 "" 2
  37 #NO_APP
  38         testl   %eax, %eax
  39         jne     .L4
  40         subl    $1, 4(%rbx)
  41 .L1:
  42         popq    %rbx
  43         popq    %rbp
  44         popq    %r12
  45         ret
  46         .p2align 4,,10
  47         .p2align 3
  48 .L2:
  49         xorl    %eax, %eax
  50         movl    $1, %edx
  51         lock cmpxchgl   %edx, (%r12)
  52         je      .L3
  53         movq    %r12, %rdi
  54         call    __lll_lock_wait_private
  55         jmp     .L3
  56         .p2align 4,,10
  57         .p2align 3
  58 .L4:
  59         xorl    %eax, %eax
  60 #APP
  61 # 34 "../sysdeps/unix/sysv/linux/seekdir.c" 1
  62         xchgl %eax, 4(%rbx)
  63 # 0 "" 2
  64 #NO_APP
  65         cmpl    $1, %eax
  66         jle     .L1
  67         xorl    %r10d, %r10d
  68         movl    $1, %edx
  69         movl    $129, %esi
  70         movq    %r12, %rdi
  71         movl    $202, %eax
  72 #APP
  73 # 34 "../sysdeps/unix/sysv/linux/seekdir.c" 1
  74         syscall
  75
  76 # 0 "" 2
  77 #NO_APP
  78         jmp     .L1
  79         .size   seekdir, .-seekdir
  80         .hidden __lll_lock_wait_private
  81         .hidden __lseek