string/strncat.s

   1         .text
   2         .p2align 4,,15
   3         .globl  strncat
   4         .type   strncat, @function
   5 strncat:
   6         pushq   %r13
   7         pushq   %r12
   8         movq    %rdx, %r13
   9         pushq   %rbp
  10         pushq   %rbx
  11         movq    %rdi, %rbp
  12         movq    %rsi, %r12
  13         subq    $8, %rsp
  14         call    strlen
  15         leaq    0(%rbp,%rax), %rbx
  16         movq    %r13, %rsi
  17         movq    %r12, %rdi
  18         call    __strnlen
  19         movq    %r12, %rsi
  20         movb    $0, (%rbx,%rax)
  21         movq    %rbx, %rdi
  22         movq    %rax, %rdx
  23         call    memcpy@PLT
  24         addq    $8, %rsp
  25         movq    %rbp, %rax
  26         popq    %rbx
  27         popq    %rbp
  28         popq    %r12
  29         popq    %r13
  30         ret
  31         .size   strncat, .-strncat
  32         .globl  __strncat
  33         .hidden __strncat
  34         .set    __strncat,strncat
  35         .hidden __strnlen
  36         .hidden strlen