user: 下面的汇编指令对应的C源代码是什么：

```asm
<swap_>:
  endbr64
  push   %rbp
  mov    %rsp,%rbp
  sub    $0x40,%rsp
  mov    %rdi,-0x18(%rbp)
  mov    %rsi,-0x20(%rbp)
  mov    %rdx,-0x28(%rbp)
  mov    %rcx,-0x30(%rbp)
  mov    %r8,-0x38(%rbp)
  mov    %r9,-0x40(%rbp)
  subq   $0x4,0x10(%rbp)
  subq   $0x4,-0x40(%rbp)
  subq   $0x4,-0x38(%rbp)
  mov    -0x40(%rbp),%rax
  lea    0x4(%rax),%rcx
  mov    -0x38(%rbp),%rax
  lea    0x4(%rax),%rdx
  mov    -0x18(%rbp),%rax
  mov    (%rax),%eax
  cltq
  lea    0x0(,%rax,4),%rsi
  mov    0x10(%rbp),%rax
  lea    (%rsi,%rax,1),%rdi
  mov    -0x20(%rbp),%rax
  mov    %rax,%rsi
  call   <lstptr_@plt>
  mov    %eax,D179(%rip)
  mov    D179(%rip),%eax
  cltq
  lea    0x0(,%rax,4),%rdx
  mov    -0x38(%rbp),%rax
  add    %rdx,%rax
  mov    (%rax),%eax
  mov    %eax,-0x4(%rbp)
  mov    -0x4(%rbp),%eax
  mov    %eax,%edx
  neg    %edx
  cmovs  %eax,%edx
  mov    -0x20(%rbp),%rax
  mov    (%rax),%eax
  cmp    %eax,%edx
  jne    L26
  mov    0x18(%rbp),%rax
  movl   $0x0,(%rax)
  mov    $0x0,%eax
  jmp    L33
L26:
  mov    -0x40(%rbp),%rax
  lea    0x4(%rax),%rcx
  mov    -0x38(%rbp),%rax
  lea    0x4(%rax),%rdx
  mov    -0x28(%rbp),%rax
  mov    (%rax),%eax
  cltq
  lea    0x0(,%rax,4),%rsi
  mov    0x10(%rbp),%rax
  lea    (%rsi,%rax,1),%rdi
  mov    -0x20(%rbp),%rax
  mov    %rax,%rsi
  call   <lstptr_@plt>
  mov    %eax,D138(%rip)
  mov    D138(%rip),%eax
  cltq
  lea    0x0(,%rax,4),%rdx
  mov    -0x40(%rbp),%rax
  add    %rdx,%rax
  mov    (%rax),%eax
  mov    %eax,D138(%rip)
  mov    D138(%rip),%eax
  cltq
  lea    0x0(,%rax,4),%rdx
  mov    -0x40(%rbp),%rax
  add    %rdx,%rax
  mov    D138(%rip),%edx
  movslq %edx,%rdx
  lea    0x0(,%rdx,4),%rcx
  mov    -0x40(%rbp),%rdx
  add    %rcx,%rdx
  mov    (%rax),%eax
  mov    %eax,(%rdx)
  mov    -0x28(%rbp),%rax
  mov    (%rax),%eax
  cltq
  lea    0x0(,%rax,4),%rdx
  mov    0x10(%rbp),%rax
  add    %rdx,%rax
  mov    (%rax),%edx
  mov    D138(%rip),%eax
  cmp    %eax,%edx
  jne    L18
  mov    -0x28(%rbp),%rax
  mov    (%rax),%eax
  cltq
  lea    0x0(,%rax,4),%rdx
  mov    0x10(%rbp),%rax
  add    %rax,%rdx
  mov    D138(%rip),%eax
  mov    %eax,(%rdx)
L18:
  mov    -0x40(%rbp),%rax
  lea    0x4(%rax),%rcx
  mov    -0x38(%rbp),%rax
  lea    0x4(%rax),%rdx
  mov    -0x18(%rbp),%rax
  mov    (%rax),%eax
  cltq
  lea    0x0(,%rax,4),%rsi
  mov    0x10(%rbp),%rax
  lea    (%rsi,%rax,1),%rdi
  mov    -0x28(%rbp),%rax
  mov    %rax,%rsi
  call   <lstptr_@plt>
  mov    %eax,D29(%rip)
  mov    D29(%rip),%eax
  cltq
  lea    0x0(,%rax,4),%rdx
  mov    -0x40(%rbp),%rax
  add    %rdx,%rax
  mov    (%rax),%eax
  mov    %eax,D29(%rip)
  mov    D29(%rip),%eax
  cltq
  lea    0x0(,%rax,4),%rdx
  mov    -0x40(%rbp),%rax
  add    %rax,%rdx
  mov    D138(%rip),%eax
  mov    %eax,(%rdx)
  mov    D138(%rip),%eax
  cltq
  lea    0x0(,%rax,4),%rdx
  mov    -0x38(%rbp),%rax
  add    %rax,%rdx
  mov    -0x20(%rbp),%rax
  mov    (%rax),%eax
  mov    %eax,(%rdx)
  mov    D138(%rip),%eax
  cltq
  lea    0x0(,%rax,4),%rdx
  mov    -0x40(%rbp),%rax
  add    %rax,%rdx
  mov    D29(%rip),%eax
  mov    %eax,(%rdx)
  mov    -0x40(%rbp),%rax
  lea    0x4(%rax),%rcx
  mov    -0x38(%rbp),%rax
  lea    0x4(%rax),%rdx
  mov    -0x30(%rbp),%rax
  mov    (%rax),%eax
  cltq
  lea    0x0(,%rax,4),%rsi
  mov    0x10(%rbp),%rax
  lea    (%rsi,%rax,1),%rdi
  mov    -0x18(%rbp),%rax
  mov    %rax,%rsi
  call   <lstptr_@plt>
  mov    %eax,D136(%rip)
  mov    D136(%rip),%eax
  cltq
  lea    0x0(,%rax,4),%rdx
  mov    -0x40(%rbp),%rax
  add    %rdx,%rax
  mov    (%rax),%eax
  mov    %eax,D136(%rip)
  mov    D136(%rip),%eax
  cltq
  lea    0x0(,%rax,4),%rdx
  mov    -0x40(%rbp),%rax
  add    %rdx,%rax
  mov    D136(%rip),%edx
  movslq %edx,%rdx
  lea    0x0(,%rdx,4),%rcx
  mov    -0x40(%rbp),%rdx
  add    %rcx,%rdx
  mov    (%rax),%eax
  mov    %eax,(%rdx)
  mov    -0x30(%rbp),%rax
  mov    (%rax),%eax
  cltq
  lea    0x0(,%rax,4),%rdx
  mov    0x10(%rbp),%rax
  add    %rdx,%rax
  mov    (%rax),%edx
  mov    D136(%rip),%eax
  cmp    %eax,%edx
  jne    L19
  mov    -0x30(%rbp),%rax
  mov    (%rax),%eax
  cltq
  lea    0x0(,%rax,4),%rdx
  mov    0x10(%rbp),%rax
  add    %rax,%rdx
  mov    D136(%rip),%eax
  mov    %eax,(%rdx)
L19:
  mov    -0x40(%rbp),%rax
  lea    0x4(%rax),%rcx
  mov    -0x38(%rbp),%rax
  lea    0x4(%rax),%rdx
  mov    -0x20(%rbp),%rax
  mov    (%rax),%eax
  cltq
  lea    0x0(,%rax,4),%rsi
  mov    0x10(%rbp),%rax
  lea    (%rsi,%rax,1),%rdi
  mov    -0x30(%rbp),%rax
  mov    %rax,%rsi
  call   <lstptr_@plt>
  mov    %eax,D136(%rip)
  mov    D136(%rip),%eax
  cltq
  lea    0x0(,%rax,4),%rdx
  mov    -0x40(%rbp),%rax
  add    %rdx,%rax
  mov    (%rax),%eax
  mov    %eax,D136(%rip)
  mov    D136(%rip),%eax
  cltq
  lea    0x0(,%rax,4),%rdx
  mov    -0x40(%rbp),%rax
  add    %rax,%rdx
  mov    D136(%rip),%eax
  mov    %eax,(%rdx)
  mov    D136(%rip),%eax
  cltq
  lea    0x0(,%rax,4),%rdx
  mov    -0x38(%rbp),%rax
  add    %rax,%rdx
  mov    -0x18(%rbp),%rax
  mov    (%rax),%eax
  mov    %eax,(%rdx)
  mov    D136(%rip),%eax
  cltq
  lea    0x0(,%rax,4),%rdx
  mov    -0x40(%rbp),%rax
  add    %rax,%rdx
  mov    D136(%rip),%eax
  mov    %eax,(%rdx)
  mov    D136(%rip),%edx
  mov    0x18(%rbp),%rax
  mov    %edx,(%rax)
  mov    $0x0,%eax
L33:
  leave
  ret
```

assistant: ```c
int swap_(int *in1, int *in2, int *io1, int *io2, int *list, int *lptr, int *lend, int *lp21) {
  int i__1;
  static int lp, lph, lpsav;
  --lend;
  --lptr;
  --list;
  lp = lstptr_(&lend[*in1], in2, &list[1], &lptr[1]);
  if ((i__1 = list[lp], ((i__1) >= 0 ? (i__1) : -(i__1))) == *in2) {
    *lp21 = 0;
    return 0;
  }
  lp = lstptr_(&lend[*io1], in2, &list[1], &lptr[1]);
  lph = lptr[lp];
  lptr[lp] = lptr[lph];
  if (lend[*io1] == lph) {
    lend[*io1] = lp;
  }
  lp = lstptr_(&lend[*in1], io1, &list[1], &lptr[1]);
  lpsav = lptr[lp];
  lptr[lp] = lph;
  list[lph] = *in2;
  lptr[lph] = lpsav;
  lp = lstptr_(&lend[*io2], in1, &list[1], &lptr[1]);
  lph = lptr[lp];
  lptr[lp] = lptr[lph];
  if (lend[*io2] == lph) {
    lend[*io2] = lp;
  }
  lp = lstptr_(&lend[*in2], io2, &list[1], &lptr[1]);
  lpsav = lptr[lp];
  lptr[lp] = lph;
  list[lph] = *in1;
  lptr[lph] = lpsav;
  *lp21 = lph;
  return 0;
}
```