libio/putc_u.s

   1         .text
   2         .p2align 4,,15
   3         .globl  __putc_unlocked
   4         .hidden __putc_unlocked
   5         .type   __putc_unlocked, @function
   6 __putc_unlocked:
   7         movq    40(%rsi), %rcx
   8         cmpq    48(%rsi), %rcx
   9         movq    %rsi, %rdx
  10         movzbl  %dil, %eax
  11         jnb     .L4
  12         leaq    1(%rcx), %rsi
  13         movq    %rsi, 40(%rdx)
  14         movb    %dil, (%rcx)
  15         ret
  16         .p2align 4,,10
  17         .p2align 3
  18 .L4:
  19         movl    %eax, %esi
  20         movq    %rdx, %rdi
  21         jmp     __overflow
  22         .size   __putc_unlocked, .-__putc_unlocked
  23         .weak   putc_unlocked
  24         .hidden putc_unlocked
  25         .set    putc_unlocked,__putc_unlocked
  26         .hidden __overflow