rt/shm_open.s

   1         .text
   2         .p2align 4,,15
   3         .globl  shm_open
   4         .type   shm_open, @function
   5 shm_open:
   6         pushq   %rbp
   7         movq    %rsp, %rbp
   8         pushq   %r15
   9         pushq   %r14
  10         pushq   %r13
  11         pushq   %r12
  12         movl    %esi, %r13d
  13         pushq   %rbx
  14         movq    %rdi, %rbx
  15         leaq    -56(%rbp), %rdi
  16         movl    %edx, %r15d
  17         subq    $40, %rsp
  18         call    __shm_directory@PLT
  19         testq   %rax, %rax
  20         je      .L2
  21         cmpb    $47, (%rbx)
  22         movq    %rax, %r14
  23         jne     .L4
  24         .p2align 4,,10
  25         .p2align 3
  26 .L3:
  27         addq    $1, %rbx
  28         cmpb    $47, (%rbx)
  29         je      .L3
  30 .L4:
  31         movq    %rbx, %rdi
  32         call    strlen@PLT
  33         leaq    1(%rax), %r12
  34         cmpq    $1, %r12
  35         je      .L6
  36         cmpq    $254, %r12
  37         ja      .L6
  38         movl    $47, %esi
  39         movq    %rbx, %rdi
  40         call    strchr@PLT
  41         testq   %rax, %rax
  42         jne     .L6
  43         movq    -56(%rbp), %rdx
  44         movq    %r14, %rsi
  45         leaq    30(%rdx,%r12), %rax
  46         andq    $-16, %rax
  47         subq    %rax, %rsp
  48         leaq    15(%rsp), %rcx
  49         andq    $-16, %rcx
  50         movq    %rcx, %rdi
  51         movq    %rcx, -72(%rbp)
  52         call    __mempcpy@PLT
  53         movq    %r12, %rdx
  54         movq    %rbx, %rsi
  55         movq    %rax, %rdi
  56         call    memcpy@PLT
  57         leaq    -60(%rbp), %rsi
  58         movl    $1, %edi
  59         call    pthread_setcancelstate@PLT
  60         movq    -72(%rbp), %rcx
  61         movl    %r13d, %esi
  62         xorl    %eax, %eax
  63         orl     $655360, %esi
  64         movl    %r15d, %edx
  65         movq    %rcx, %rdi
  66         call    open@PLT
  67         cmpl    $-1, %eax
  68         movl    %eax, %ebx
  69         je      .L13
  70 .L8:
  71         movl    -60(%rbp), %edi
  72         xorl    %esi, %esi
  73         call    pthread_setcancelstate@PLT
  74 .L1:
  75         leaq    -40(%rbp), %rsp
  76         movl    %ebx, %eax
  77         popq    %rbx
  78         popq    %r12
  79         popq    %r13
  80         popq    %r14
  81         popq    %r15
  82         popq    %rbp
  83         ret
  84         .p2align 4,,10
  85         .p2align 3
  86 .L13:
  87         movq    errno@gottpoff(%rip), %rax
  88         cmpl    $21, %fs:(%rax)
  89         jne     .L8
  90         movl    $22, %fs:(%rax)
  91         jmp     .L8
  92         .p2align 4,,10
  93         .p2align 3
  94 .L2:
  95         movq    errno@gottpoff(%rip), %rax
  96         movl    $-1, %ebx
  97         movl    $38, %fs:(%rax)
  98         jmp     .L1
  99         .p2align 4,,10
 100         .p2align 3
 101 .L6:
 102         movq    errno@gottpoff(%rip), %rax
 103         movl    $-1, %ebx
 104         movl    $22, %fs:(%rax)
 105         jmp     .L1
 106         .size   shm_open, .-shm_open