user: 这段汇编代码用C语言表示是什么样的?

```asm
<multiply_replace_escape_chars>:
  endbr64
  push   %rbp
  mov    %rsp,%rbp
  mov    %rdi,-0x28(%rbp)
  mov    %rsi,-0x30(%rbp)
  mov    -0x28(%rbp),%rax
  mov    %rax,-0x18(%rbp)
  mov    -0x30(%rbp),%rax
  mov    (%rax),%rdx
  mov    -0x28(%rbp),%rax
  add    %rdx,%rax
  mov    %rax,-0x8(%rbp)
  mov    -0x28(%rbp),%rax
  mov    %rax,-0x10(%rbp)
  jmp    L169
L22:
  mov    -0x18(%rbp),%rax
  movzbl (%rax),%eax
  cmp    $0x5c,%al
  jne    L176
  mov    -0x8(%rbp),%rax
  sub    -0x18(%rbp),%rax
  cmp    $0x1,%rax
  jle    L176
  mov    -0x18(%rbp),%rax
  add    $0x1,%rax
  movzbl (%rax),%eax
  movsbl %al,%eax
  test   %eax,%eax
  je     L122
  test   %eax,%eax
  js     L7
  cmp    $0x76,%eax
  jg     L7
  cmp    $0x22,%eax
  jl     L7
  sub    $0x22,%eax
  cmp    $0x54,%eax
  ja     L7
  mov    %eax,%eax
  lea    0x0(,%rax,4),%rdx
  lea    D10(%rip),%rax
  mov    (%rdx,%rax,1),%eax
  cltq
  lea    D10(%rip),%rdx
  add    %rdx,%rax
  notrack jmp *%rax
  mov    -0x10(%rbp),%rax
  movb   $0x7,(%rax)
  jmp    L55
  mov    -0x10(%rbp),%rax
  movb   $0x8,(%rax)
  jmp    L55
  mov    -0x10(%rbp),%rax
  movb   $0xc,(%rax)
  jmp    L55
  mov    -0x10(%rbp),%rax
  movb   $0xa,(%rax)
  jmp    L55
  mov    -0x10(%rbp),%rax
  movb   $0xd,(%rax)
  jmp    L55
  mov    -0x10(%rbp),%rax
  movb   $0x9,(%rax)
  jmp    L55
  mov    -0x10(%rbp),%rax
  movb   $0xb,(%rax)
  jmp    L55
  mov    -0x10(%rbp),%rax
  movb   $0x5c,(%rax)
  jmp    L55
  mov    -0x10(%rbp),%rax
  movb   $0x3f,(%rax)
  jmp    L55
  mov    -0x10(%rbp),%rax
  movb   $0x27,(%rax)
  jmp    L55
  mov    -0x10(%rbp),%rax
  movb   $0x22,(%rax)
  jmp    L55
L122:
  mov    -0x10(%rbp),%rax
  movb   $0x0,(%rax)
  jmp    L55
L7:
  mov    -0x18(%rbp),%rax
  movzbl 0x1(%rax),%edx
  mov    -0x10(%rbp),%rax
  mov    %dl,(%rax)
  nop
L55:
  addq   $0x2,-0x18(%rbp)
  jmp    L104
L176:
  mov    -0x18(%rbp),%rax
  movzbl (%rax),%edx
  mov    -0x10(%rbp),%rax
  mov    %dl,(%rax)
  addq   $0x1,-0x18(%rbp)
L104:
  addq   $0x1,-0x10(%rbp)
L169:
  mov    -0x18(%rbp),%rax
  cmp    -0x8(%rbp),%rax
  jne    L22
  mov    -0x10(%rbp),%rax
  movb   $0x0,(%rax)
  mov    -0x10(%rbp),%rax
  sub    -0x28(%rbp),%rax
  mov    %rax,%rdx
  mov    -0x30(%rbp),%rax
  mov    %rdx,(%rax)
  mov    $0x0,%eax
  pop    %rbp
  ret
```

assistant: ```c
int multiply_replace_escape_chars(char *str, size_t *len) {
  char *str_src_p = str, *str_src_endp = str + *len;
  char *str_dst_p = str;
  while (str_src_p != str_src_endp) {
    if ((*str_src_p == '\\') && (str_src_endp - str_src_p >= 2)) {
      switch (*(str_src_p + 1)) {
      case 'a':
        *str_dst_p = '\a';
        break;
      case 'b':
        *str_dst_p = '\b';
        break;
      case 'f':
        *str_dst_p = '\f';
        break;
      case 'n':
        *str_dst_p = '\n';
        break;
      case 'r':
        *str_dst_p = '\r';
        break;
      case 't':
        *str_dst_p = '\t';
        break;
      case 'v':
        *str_dst_p = '\v';
        break;
      case '\\':
        *str_dst_p = '\\';
        break;
      case '\?':
        *str_dst_p = '\?';
        break;
      case '\'':
        *str_dst_p = '\'';
        break;
      case '\"':
        *str_dst_p = '\"';
        break;
      case '\0':
        *str_dst_p = '\0';
        break;
      default:
        *str_dst_p = *(str_src_p + 1);
        break;
      }
      str_src_p += 2;
    } else {
      *str_dst_p = *str_src_p;
      str_src_p += 1;
    }
    str_dst_p += 1;
  }
  *str_dst_p = '\0';
  *len = (size_t)(str_dst_p - str);
  return 0;
}
```