libio/iofgets_u.s

   1         .text
   2         .p2align 4,,15
   3         .globl  __fgets_unlocked
   4         .hidden __fgets_unlocked
   5         .type   __fgets_unlocked, @function
   6 __fgets_unlocked:
   7         testl   %esi, %esi
   8         jle     .L7
   9         cmpl    $1, %esi
  10         je      .L16
  11         pushq   %r12
  12         pushq   %rbp
  13         subl    $1, %esi
  14         pushq   %rbx
  15         movq    %rdx, %rbx
  16         movl    (%rdx), %edx
  17         movq    %rdi, %r12
  18         movl    $1, %r8d
  19         movl    $10, %ecx
  20         movl    %edx, %ebp
  21         andl    $-33, %edx
  22         movl    %edx, (%rbx)
  23         movslq  %esi, %rdx
  24         movq    %rdi, %rsi
  25         movq    %rbx, %rdi
  26         andl    $32, %ebp
  27         call    _IO_getline
  28         xorl    %edi, %edi
  29         testq   %rax, %rax
  30         movl    (%rbx), %edx
  31         je      .L5
  32         testb   $32, %dl
  33         je      .L6
  34         movq    __libc_errno@gottpoff(%rip), %rcx
  35         xorl    %edi, %edi
  36         cmpl    $11, %fs:(%rcx)
  37         je      .L6
  38 .L5:
  39         orl     %edx, %ebp
  40         movq    %rdi, %rax
  41         movl    %ebp, (%rbx)
  42         popq    %rbx
  43         popq    %rbp
  44         popq    %r12
  45         ret
  46         .p2align 4,,10
  47         .p2align 3
  48 .L6:
  49         movb    $0, (%r12,%rax)
  50         movl    (%rbx), %edx
  51         movq    %r12, %rdi
  52         movq    %rdi, %rax
  53         orl     %edx, %ebp
  54         movl    %ebp, (%rbx)
  55         popq    %rbx
  56         popq    %rbp
  57         popq    %r12
  58         ret
  59         .p2align 4,,10
  60         .p2align 3
  61 .L16:
  62         movb    $0, (%rdi)
  63 .L13:
  64         movq    %rdi, %rax
  65         ret
  66         .p2align 4,,10
  67         .p2align 3
  68 .L7:
  69         xorl    %edi, %edi
  70         jmp     .L13
  71         .size   __fgets_unlocked, .-__fgets_unlocked
  72         .weak   fgets_unlocked
  73         .hidden fgets_unlocked
  74         .set    fgets_unlocked,__fgets_unlocked
  75         .hidden _IO_getline