user: 这段汇编代码用C语言表示是什么样的:

```asm
<__wcsncat_chk>:
  endbr64
  push   %rbp
  mov    %rsp,%rbp
  sub    $0x40,%rsp
  mov    %rdi,-0x28(%rbp)
  mov    %rsi,-0x30(%rbp)
  mov    %rdx,-0x38(%rbp)
  mov    %rcx,-0x40(%rbp)
  mov    -0x28(%rbp),%rax
  mov    %rax,-0x8(%rbp)
L224:
  mov    -0x40(%rbp),%rax
  lea    -0x1(%rax),%rdx
  mov    %rdx,-0x40(%rbp)
  test   %rax,%rax
  sete   %al
  movzbl %al,%eax
  mov    %eax,%edi
  call   <__glibc_unlikely@plt>
  test   %rax,%rax
  je     L27
  mov    $0x0,%eax
  call   <__chk_fail@plt>
L27:
  mov    -0x28(%rbp),%rax
  lea    0x4(%rax),%rdx
  mov    %rdx,-0x28(%rbp)
  mov    (%rax),%eax
  mov    %eax,-0x14(%rbp)
  cmpl   $0x0,-0x14(%rbp)
  jne    L224
  addq   $0x1,-0x40(%rbp)
  subq   $0x8,-0x28(%rbp)
  cmpq   $0x3,-0x38(%rbp)
  jbe    L204
  mov    -0x38(%rbp),%rax
  shr    $0x2,%rax
  mov    %rax,-0x10(%rbp)
L187:
  mov    -0x40(%rbp),%rax
  lea    -0x1(%rax),%rdx
  mov    %rdx,-0x40(%rbp)
  test   %rax,%rax
  sete   %al
  movzbl %al,%eax
  mov    %eax,%edi
  call   <__glibc_unlikely@plt>
  test   %rax,%rax
  je     L150
  mov    $0x0,%eax
  call   <__chk_fail@plt>
L150:
  mov    -0x30(%rbp),%rax
  lea    0x4(%rax),%rdx
  mov    %rdx,-0x30(%rbp)
  mov    (%rax),%eax
  mov    %eax,-0x14(%rbp)
  addq   $0x4,-0x28(%rbp)
  mov    -0x28(%rbp),%rax
  mov    -0x14(%rbp),%edx
  mov    %edx,(%rax)
  cmpl   $0x0,-0x14(%rbp)
  jne    L38
  mov    -0x8(%rbp),%rax
  jmp    L9
L38:
  mov    -0x40(%rbp),%rax
  lea    -0x1(%rax),%rdx
  mov    %rdx,-0x40(%rbp)
  test   %rax,%rax
  sete   %al
  movzbl %al,%eax
  mov    %eax,%edi
  call   <__glibc_unlikely@plt>
  test   %rax,%rax
  je     L23
  mov    $0x0,%eax
  call   <__chk_fail@plt>
L23:
  mov    -0x30(%rbp),%rax
  lea    0x4(%rax),%rdx
  mov    %rdx,-0x30(%rbp)
  mov    (%rax),%eax
  mov    %eax,-0x14(%rbp)
  addq   $0x4,-0x28(%rbp)
  mov    -0x28(%rbp),%rax
  mov    -0x14(%rbp),%edx
  mov    %edx,(%rax)
  cmpl   $0x0,-0x14(%rbp)
  jne    L199
  mov    -0x8(%rbp),%rax
  jmp    L9
L199:
  mov    -0x40(%rbp),%rax
  lea    -0x1(%rax),%rdx
  mov    %rdx,-0x40(%rbp)
  test   %rax,%rax
  sete   %al
  movzbl %al,%eax
  mov    %eax,%edi
  call   <__glibc_unlikely@plt>
  test   %rax,%rax
  je     L62
  mov    $0x0,%eax
  call   <__chk_fail@plt>
L62:
  mov    -0x30(%rbp),%rax
  lea    0x4(%rax),%rdx
  mov    %rdx,-0x30(%rbp)
  mov    (%rax),%eax
  mov    %eax,-0x14(%rbp)
  addq   $0x4,-0x28(%rbp)
  mov    -0x28(%rbp),%rax
  mov    -0x14(%rbp),%edx
  mov    %edx,(%rax)
  cmpl   $0x0,-0x14(%rbp)
  jne    L226
  mov    -0x8(%rbp),%rax
  jmp    L9
L226:
  mov    -0x40(%rbp),%rax
  lea    -0x1(%rax),%rdx
  mov    %rdx,-0x40(%rbp)
  test   %rax,%rax
  sete   %al
  movzbl %al,%eax
  mov    %eax,%edi
  call   <__glibc_unlikely@plt>
  test   %rax,%rax
  je     L137
  mov    $0x0,%eax
  call   <__chk_fail@plt>
L137:
  mov    -0x30(%rbp),%rax
  lea    0x4(%rax),%rdx
  mov    %rdx,-0x30(%rbp)
  mov    (%rax),%eax
  mov    %eax,-0x14(%rbp)
  addq   $0x4,-0x28(%rbp)
  mov    -0x28(%rbp),%rax
  mov    -0x14(%rbp),%edx
  mov    %edx,(%rax)
  cmpl   $0x0,-0x14(%rbp)
  jne    L190
  mov    -0x8(%rbp),%rax
  jmp    L9
L190:
  subq   $0x1,-0x10(%rbp)
  cmpq   $0x0,-0x10(%rbp)
  jne    L187
  andq   $0x3,-0x38(%rbp)
  jmp    L204
L189:
  mov    -0x40(%rbp),%rax
  lea    -0x1(%rax),%rdx
  mov    %rdx,-0x40(%rbp)
  test   %rax,%rax
  sete   %al
  movzbl %al,%eax
  mov    %eax,%edi
  call   <__glibc_unlikely@plt>
  test   %rax,%rax
  je     L205
  mov    $0x0,%eax
  call   <__chk_fail@plt>
L205:
  mov    -0x30(%rbp),%rax
  lea    0x4(%rax),%rdx
  mov    %rdx,-0x30(%rbp)
  mov    (%rax),%eax
  mov    %eax,-0x14(%rbp)
  addq   $0x4,-0x28(%rbp)
  mov    -0x28(%rbp),%rax
  mov    -0x14(%rbp),%edx
  mov    %edx,(%rax)
  cmpl   $0x0,-0x14(%rbp)
  jne    L30
  mov    -0x8(%rbp),%rax
  jmp    L9
L30:
  subq   $0x1,-0x38(%rbp)
L204:
  cmpq   $0x0,-0x38(%rbp)
  jne    L189
  cmpl   $0x0,-0x14(%rbp)
  je     L40
  mov    -0x40(%rbp),%rax
  lea    -0x1(%rax),%rdx
  mov    %rdx,-0x40(%rbp)
  test   %rax,%rax
  sete   %al
  movzbl %al,%eax
  mov    %eax,%edi
  call   <__glibc_unlikely@plt>
  test   %rax,%rax
  je     L145
  mov    $0x0,%eax
  call   <__chk_fail@plt>
L145:
  addq   $0x4,-0x28(%rbp)
  mov    -0x28(%rbp),%rax
  movl   $0x0,(%rax)
L40:
  mov    -0x8(%rbp),%rax
L9:
  leave
  ret
```

assistant: ```c
wchar_t *__wcsncat_chk(wchar_t *dest, const wchar_t *src, size_t n, size_t destlen) {
  wchar_t c;
  wchar_t *const s = dest;
  do {
    if (__glibc_unlikely(destlen-- == 0))
      __chk_fail();
    c = *dest++;
  } while (c != L'\0');
  ++destlen;
  dest -= 2;
  if (n >= 4) {
    size_t n4 = n >> 2;
    do {
      if (__glibc_unlikely(destlen-- == 0))
        __chk_fail();
      c = *src++;
      *++dest = c;
      if (c == L'\0')
        return s;
      if (__glibc_unlikely(destlen-- == 0))
        __chk_fail();
      c = *src++;
      *++dest = c;
      if (c == L'\0')
        return s;
      if (__glibc_unlikely(destlen-- == 0))
        __chk_fail();
      c = *src++;
      *++dest = c;
      if (c == L'\0')
        return s;
      if (__glibc_unlikely(destlen-- == 0))
        __chk_fail();
      c = *src++;
      *++dest = c;
      if (c == L'\0')
        return s;
    } while (--n4 > 0);
    n &= 3;
  }
  while (n > 0) {
    if (__glibc_unlikely(destlen-- == 0))
      __chk_fail();
    c = *src++;
    *++dest = c;
    if (c == L'\0')
      return s;
    n--;
  }
  if (c != L'\0') {
    if (__glibc_unlikely(destlen-- == 0))
      __chk_fail();
    *++dest = L'\0';
  }
  return s;
}
```