stdlib/getsubopt.s

   1         .text
   2         .p2align 4,,15
   3         .globl  getsubopt
   4         .type   getsubopt, @function
   5 getsubopt:
   6         pushq   %r15
   7         pushq   %r14
   8         pushq   %r13
   9         pushq   %r12
  10         pushq   %rbp
  11         pushq   %rbx
  12         subq    $40, %rsp
  13         movq    (%rdi), %rbx
  14         cmpb    $0, (%rbx)
  15         je      .L10
  16         movq    %rsi, %r12
  17         movq    %rdi, 8(%rsp)
  18         movl    $44, %esi
  19         movq    %rbx, %rdi
  20         movq    %rdx, 16(%rsp)
  21         call    __strchrnul@PLT
  22         movq    %rax, %rdx
  23         movl    $61, %esi
  24         movq    %rbx, %rdi
  25         subq    %rbx, %rdx
  26         movq    %rax, %r15
  27         movq    %rax, (%rsp)
  28         call    memchr
  29         movq    (%r12), %r14
  30         testq   %rax, %rax
  31         cmove   %r15, %rax
  32         movq    %rax, 24(%rsp)
  33         testq   %r14, %r14
  34         je      .L4
  35         movq    %rax, %rbp
  36         xorl    %r15d, %r15d
  37         subq    %rbx, %rbp
  38         .p2align 4,,10
  39         .p2align 3
  40 .L8:
  41         movq    %rbp, %rdx
  42         movq    %r14, %rsi
  43         movq    %rbx, %rdi
  44         call    strncmp
  45         testl   %eax, %eax
  46         movl    %r15d, %r13d
  47         jne     .L5
  48         cmpb    $0, (%r14,%rbp)
  49         je      .L19
  50 .L5:
  51         addq    $1, %r15
  52         movq    (%r12,%r15,8), %r14
  53         testq   %r14, %r14
  54         jne     .L8
  55 .L4:
  56         movq    16(%rsp), %rax
  57         movq    %rbx, (%rax)
  58         movq    (%rsp), %rax
  59         cmpb    $0, (%rax)
  60         jne     .L20
  61 .L9:
  62         movq    8(%rsp), %rax
  63         movq    (%rsp), %rcx
  64         movl    $-1, %r13d
  65         movq    %rcx, (%rax)
  66 .L1:
  67         addq    $40, %rsp
  68         movl    %r13d, %eax
  69         popq    %rbx
  70         popq    %rbp
  71         popq    %r12
  72         popq    %r13
  73         popq    %r14
  74         popq    %r15
  75         ret
  76         .p2align 4,,10
  77         .p2align 3
  78 .L20:
  79         movb    $0, (%rax)
  80         addq    $1, %rax
  81         movq    %rax, (%rsp)
  82         jmp     .L9
  83         .p2align 4,,10
  84         .p2align 3
  85 .L19:
  86         movq    24(%rsp), %rcx
  87         movl    $0, %edx
  88         movq    %rcx, %rsi
  89         leaq    1(%rcx), %rax
  90         movq    (%rsp), %rcx
  91         cmpq    %rcx, %rsi
  92         movq    16(%rsp), %rsi
  93         cmove   %rdx, %rax
  94         movq    %rax, (%rsi)
  95         cmpb    $0, (%rcx)
  96         je      .L7
  97         leaq    1(%rcx), %rax
  98         movb    $0, (%rcx)
  99         movq    %rax, (%rsp)
 100 .L7:
 101         movq    8(%rsp), %rax
 102         movq    (%rsp), %rcx
 103         movq    %rcx, (%rax)
 104         jmp     .L1
 105 .L10:
 106         movl    $-1, %r13d
 107         jmp     .L1
 108         .size   getsubopt, .-getsubopt
 109         .hidden strncmp
 110         .hidden memchr