rt/librt-cancellation.s

   1         .text
   2         .p2align 4,,15
   3         .globl  __librt_enable_asynccancel
   4         .type   __librt_enable_asynccancel, @function
   5 __librt_enable_asynccancel:
   6         movq    %fs:16, %rsi
   7 #APP
   8 # 35 "../nptl/cancellation.c" 1
   9         movl %fs:776,%edx
  10 # 0 "" 2
  11 #NO_APP
  12 .L3:
  13         movl    %edx, %ecx
  14         orl     $2, %ecx
  15         cmpl    %ecx, %edx
  16         je      .L1
  17         movl    %edx, %eax
  18         lock cmpxchgl   %ecx, 776(%rsi)
  19         cmpl    %eax, %edx
  20         jne     .L5
  21         andl    $-69, %ecx
  22         cmpl    $10, %ecx
  23         je      .L10
  24 .L1:
  25         movl    %edx, %eax
  26         ret
  27         .p2align 4,,10
  28         .p2align 3
  29 .L5:
  30         movl    %eax, %edx
  31         jmp     .L3
  32 .L10:
  33         subq    $8, %rsp
  34 #APP
  35 # 50 "../nptl/cancellation.c" 1
  36         movq $-1,%fs:1584
  37 # 0 "" 2
  38 #NO_APP
  39         movq    %fs:16, %rax
  40 #APP
  41 # 304 "../nptl/pthreadP.h" 1
  42         lock;orl $16, 776(%rax)
  43 # 0 "" 2
  44 # 307 "../nptl/pthreadP.h" 1
  45         movq %fs:768,%rdi
  46 # 0 "" 2
  47 #NO_APP
  48         call    __pthread_unwind@PLT
  49         .size   __librt_enable_asynccancel, .-__librt_enable_asynccancel
  50         .section        .rodata.str1.8,"aMS",@progbits,1
  51         .align 8
  52 .LC0:
  53         .string "The futex facility returned an unexpected error code.\n"
  54         .text
  55         .p2align 4,,15
  56         .globl  __librt_disable_asynccancel
  57         .type   __librt_disable_asynccancel, @function
  58 __librt_disable_asynccancel:
  59         andl    $2, %edi
  60         jne     .L21
  61 #APP
  62 # 78 "../nptl/cancellation.c" 1
  63         movl %fs:776,%ecx
  64 # 0 "" 2
  65 #NO_APP
  66         movq    %fs:16, %rax
  67         leaq    776(%rax), %r8
  68 .L13:
  69         movl    %ecx, %edx
  70         movl    %ecx, %eax
  71         andl    $-3, %edx
  72         lock cmpxchgl   %edx, (%r8)
  73         cmpl    %eax, %ecx
  74         jne     .L17
  75         andl    $12, %ecx
  76         cmpl    $4, %ecx
  77         je      .L24
  78 .L21:
  79         rep ret
  80         .p2align 4,,10
  81         .p2align 3
  82 .L24:
  83         pushq   %rbx
  84         movl    $202, %r9d
  85         movl    $1, %ebx
  86 .L16:
  87         xorl    %r10d, %r10d
  88         movl    $128, %esi
  89         movq    %r8, %rdi
  90         movl    %r9d, %eax
  91 #APP
  92 # 146 "../sysdeps/nptl/futex-internal.h" 1
  93         syscall
  94
  95 # 0 "" 2
  96 #NO_APP
  97         cmpq    $-4096, %rax
  98         ja      .L25
  99 .L14:
 100 #APP
 101 # 102 "../nptl/cancellation.c" 1
 102         movl %fs:776,%edx
 103 # 0 "" 2
 104 #NO_APP
 105         movl    %edx, %eax
 106         andl    $12, %eax
 107         cmpl    $4, %eax
 108         je      .L16
 109         popq    %rbx
 110         ret
 111         .p2align 4,,10
 112         .p2align 3
 113 .L17:
 114         movl    %eax, %ecx
 115         jmp     .L13
 116 .L25:
 117         leal    11(%rax), %ecx
 118         cmpl    $11, %ecx
 119         ja      .L15
 120         movq    %rbx, %rax
 121         salq    %cl, %rax
 122         testl   $2177, %eax
 123         jne     .L14
 124 .L15:
 125         leaq    .LC0(%rip), %rdi
 126         call    __libc_fatal@PLT
 127         .size   __librt_disable_asynccancel, .-__librt_disable_asynccancel
 128         .weak   __pthread_unwind