misc/gethostname.s

   1         .text
   2         .p2align 4,,15
   3         .globl  __gethostname
   4         .hidden __gethostname
   5         .type   __gethostname, @function
   6 __gethostname:
   7         pushq   %r14
   8         pushq   %r13
   9         movq    %rdi, %r13
  10         pushq   %r12
  11         pushq   %rbp
  12         movq    %rsi, %r12
  13         pushq   %rbx
  14         subq    $400, %rsp
  15         movq    %rsp, %rbx
  16         movq    %rbx, %rdi
  17         call    __uname
  18         testl   %eax, %eax
  19         jne     .L3
  20         addq    $65, %rbx
  21         movl    %eax, %r14d
  22         movq    %rbx, %rdi
  23         call    strlen
  24         leaq    1(%rax), %rbp
  25         movq    %r12, %rdx
  26         movq    %rbx, %rsi
  27         movq    %r13, %rdi
  28         cmpq    %r12, %rbp
  29         cmovbe  %rbp, %rdx
  30         call    memcpy@PLT
  31         cmpq    %r12, %rbp
  32         ja      .L6
  33 .L1:
  34         addq    $400, %rsp
  35         movl    %r14d, %eax
  36         popq    %rbx
  37         popq    %rbp
  38         popq    %r12
  39         popq    %r13
  40         popq    %r14
  41         ret
  42         .p2align 4,,10
  43         .p2align 3
  44 .L3:
  45         movl    $-1, %r14d
  46         jmp     .L1
  47         .p2align 4,,10
  48         .p2align 3
  49 .L6:
  50         movq    __libc_errno@gottpoff(%rip), %rax
  51         movl    $-1, %r14d
  52         movl    $36, %fs:(%rax)
  53         jmp     .L1
  54         .size   __gethostname, .-__gethostname
  55         .weak   gethostname
  56         .set    gethostname,__gethostname
  57         .hidden strlen
  58         .hidden __uname