nptl/pthread_rwlock_rdlock.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  __pthread_rwlock_rdlock
   9         .type   __pthread_rwlock_rdlock, @function
  10 __pthread_rwlock_rdlock:
  11         movl    24(%rdi), %edx
  12 #APP
  13 # 298 "pthread_rwlock_common.c" 1
  14         movl %fs:720,%eax
  15 # 0 "" 2
  16 #NO_APP
  17         cmpl    %eax, %edx
  18         je      .L29
  19         pushq   %r12
  20         pushq   %rbp
  21         pushq   %rbx
  22         cmpl    $2, 48(%rdi)
  23         movq    %rdi, %rbx
  24         je      .L3
  25 .L10:
  26         movl    $8, %eax
  27         lock xaddl      %eax, (%rbx)
  28         addl    $8, %eax
  29 .L4:
  30         testl   %eax, %eax
  31         js      .L12
  32         testb   $1, %al
  33         jne     .L13
  34 .L32:
  35         xorl    %edx, %edx
  36 .L1:
  37         popq    %rbx
  38         movl    %edx, %eax
  39         popq    %rbp
  40         popq    %r12
  41         ret
  42         .p2align 4,,10
  43         .p2align 3
  44 .L3:
  45         movl    (%rdi), %esi
  46         movl    $128, %ebp
  47 .L7:
  48         movl    %esi, %eax
  49         andl    $3, %eax
  50         cmpl    $2, %eax
  51         jne     .L10
  52         movl    %esi, %eax
  53         shrl    $3, %eax
  54         testl   %eax, %eax
  55         je      .L10
  56         movl    %esi, %edx
  57         movl    %esi, %eax
  58         orl     $4, %edx
  59         lock cmpxchgl   %edx, (%rbx)
  60         movl    %eax, %esi
  61         je      .L6
  62         jmp     .L7
  63         .p2align 4,,10
  64         .p2align 3
  65 .L56:
  66         cmpl    $75, %eax
  67         je      .L1
  68 .L6:
  69         movl    (%rbx), %esi
  70         testb   $4, %sil
  71         je      .L7
  72         movl    28(%rbx), %r8d
  73         movq    %rbx, %rdi
  74         testl   %r8d, %r8d
  75         cmovne  %ebp, %r8d
  76         xorl    %edx, %edx
  77         xorl    %ecx, %ecx
  78         call    __futex_abstimed_wait64@PLT
  79         cmpl    $110, %eax
  80         movl    %eax, %edx
  81         jne     .L56
  82         popq    %rbx
  83         movl    %edx, %eax
  84         popq    %rbp
  85         popq    %r12
  86         ret
  87         .p2align 4,,10
  88         .p2align 3
  89 .L13:
  90         movl    %eax, %edx
  91         andl    $3, %edx
  92         cmpl    $1, %edx
  93         jne     .L57
  94         movl    %eax, %edx
  95         xorl    $1, %edx
  96         lock cmpxchgl   %edx, (%rbx)
  97         jne     .L13
  98         leaq    8(%rbx), %rdi
  99         xorl    %eax, %eax
 100         xchgl   (%rdi), %eax
 101         testb   $2, %al
 102         je      .L32
 103         cmpl    $1, 28(%rbx)
 104         movl    $2147483647, %edx
 105         movl    $202, %eax
 106         sbbl    %esi, %esi
 107         xorl    %r10d, %r10d
 108         andl    $128, %esi
 109         addl    $1, %esi
 110 #APP
 111 # 209 "../sysdeps/nptl/futex-internal.h" 1
 112         syscall
 113
 114 # 0 "" 2
 115 #NO_APP
 116         cmpq    $-4096, %rax
 117         jbe     .L32
 118         cmpl    $-22, %eax
 119         je      .L32
 120         cmpl    $-14, %eax
 121         je      .L32
 122         leaq    .LC0(%rip), %rdi
 123         call    __libc_fatal@PLT
 124         .p2align 4,,10
 125         .p2align 3
 126 .L29:
 127         movl    $35, %edx
 128         movl    %edx, %eax
 129         ret
 130         .p2align 4,,10
 131         .p2align 3
 132 .L12:
 133         leal    -8(%rax), %edx
 134         lock cmpxchgl   %edx, (%rbx)
 135         jne     .L4
 136         movl    $11, %edx
 137         jmp     .L1
 138 .L57:
 139         leaq    8(%rbx), %rbp
 140         xorl    %r12d, %r12d
 141 .L18:
 142         movl    0(%rbp), %eax
 143         movl    %eax, %edx
 144         orl     $2, %edx
 145         cmpl    $3, %edx
 146         je      .L27
 147         testb   %r12b, %r12b
 148         jne     .L32
 149         movl    (%rbx), %eax
 150         testb   $1, %al
 151         jne     .L18
 152         movl    0(%rbp), %eax
 153         movl    %eax, %edx
 154         orl     $2, %edx
 155         cmpl    $3, %edx
 156         jne     .L32
 157         movl    $1, %r12d
 158 .L27:
 159         movl    28(%rbx), %r8d
 160         movl    $128, %edx
 161         testl   %r8d, %r8d
 162         cmovne  %edx, %r8d
 163         testb   $2, %al
 164         jne     .L23
 165         movl    $3, %edx
 166         lock cmpxchgl   %edx, 0(%rbp)
 167         jne     .L18
 168 .L23:
 169         xorl    %edx, %edx
 170         xorl    %ecx, %ecx
 171         movl    $3, %esi
 172         movq    %rbp, %rdi
 173         call    __futex_abstimed_wait64@PLT
 174         cmpl    $110, %eax
 175         movl    %eax, %edx
 176         je      .L21
 177         cmpl    $75, %eax
 178         jne     .L18
 179 .L21:
 180         movl    (%rbx), %eax
 181 .L24:
 182         testb   $1, %al
 183         je      .L26
 184         leal    -8(%rax), %ecx
 185         lock cmpxchgl   %ecx, (%rbx)
 186         je      .L1
 187         jmp     .L24
 188         .p2align 4,,10
 189         .p2align 3
 190 .L26:
 191         movl    0(%rbp), %eax
 192         orl     $2, %eax
 193         cmpl    $3, %eax
 194         je      .L26
 195         jmp     .L32
 196         .size   __pthread_rwlock_rdlock, .-__pthread_rwlock_rdlock
 197         .weak   pthread_rwlock_rdlock
 198         .set    pthread_rwlock_rdlock,__pthread_rwlock_rdlock