io/dup3.s

   1 .text
   2 .globl __dup3
   3 .type __dup3,@function
   4 .align 1<<4
   5 __dup3:
   6         movl $292, %eax
   7         syscall
   8         cmpq $-4095, %rax
   9         jae 0f
  10         ret
  11 0:
  12         movq __libc_errno@GOTTPOFF(%rip), %rcx
  13         neg %eax
  14         movl %eax, %fs:(%rcx)
  15         or $-1, %rax
  16         ret
  17 .size __dup3,.-__dup3
  18 .weak dup3
  19 dup3 = __dup3