user: 提供的汇编代码用C语言表示会是什么样子:

```asm
<generateMatrix>:
  endbr64
  push   %rbp
  mov    %rsp,%rbp
  push   %rbx
  sub    $0x38,%rsp
  mov    %edi,-0x34(%rbp)
  cmpl   $0x0,-0x34(%rbp)
  jne    L72
  mov    $0x0,%eax
  jmp    L17
L72:
  mov    -0x34(%rbp),%eax
  cltq
  shl    $0x3,%eax
  mov    %eax,%edi
  call   <malloc@plt>
  mov    %rax,-0x18(%rbp)
  movl   $0x0,-0x28(%rbp)
  jmp    L83
L29:
  mov    -0x34(%rbp),%eax
  cltq
  shl    $0x2,%eax
  mov    %eax,%edx
  mov    -0x28(%rbp),%eax
  cltq
  lea    0x0(,%rax,8),%rcx
  mov    -0x18(%rbp),%rax
  lea    (%rcx,%rax,1),%rbx
  mov    %edx,%edi
  call   <malloc@plt>
  mov    %rax,(%rbx)
  addl   $0x1,-0x28(%rbp)
L83:
  mov    -0x28(%rbp),%eax
  cmp    -0x34(%rbp),%eax
  jl     L29
  movl   $0x0,-0x20(%rbp)
  mov    -0x34(%rbp),%eax
  sub    $0x1,%eax
  mov    %eax,-0x1c(%rbp)
  movl   $0x1,-0x24(%rbp)
  jmp    L115
L76:
  mov    -0x20(%rbp),%eax
  mov    %eax,-0x28(%rbp)
  jmp    L42
L43:
  mov    -0x24(%rbp),%eax
  lea    0x1(%rax),%edx
  mov    %edx,-0x24(%rbp)
  mov    -0x20(%rbp),%edx
  movslq %edx,%rdx
  lea    0x0(,%rdx,8),%rcx
  mov    -0x18(%rbp),%rdx
  add    %rcx,%rdx
  mov    (%rdx),%rcx
  mov    -0x28(%rbp),%edx
  movslq %edx,%rdx
  shl    $0x2,%rdx
  add    %rcx,%rdx
  mov    %eax,(%rdx)
  addl   $0x1,-0x28(%rbp)
L42:
  mov    -0x28(%rbp),%eax
  cmp    -0x1c(%rbp),%eax
  jl     L43
  mov    -0x20(%rbp),%eax
  mov    %eax,-0x28(%rbp)
  jmp    L71
L39:
  mov    -0x24(%rbp),%eax
  lea    0x1(%rax),%edx
  mov    %edx,-0x24(%rbp)
  mov    -0x28(%rbp),%edx
  movslq %edx,%rdx
  lea    0x0(,%rdx,8),%rcx
  mov    -0x18(%rbp),%rdx
  add    %rcx,%rdx
  mov    (%rdx),%rcx
  mov    -0x1c(%rbp),%edx
  movslq %edx,%rdx
  shl    $0x2,%rdx
  add    %rcx,%rdx
  mov    %eax,(%rdx)
  addl   $0x1,-0x28(%rbp)
L71:
  mov    -0x28(%rbp),%eax
  cmp    -0x1c(%rbp),%eax
  jl     L39
  mov    -0x1c(%rbp),%eax
  mov    %eax,-0x28(%rbp)
  jmp    L112
L62:
  mov    -0x24(%rbp),%eax
  lea    0x1(%rax),%edx
  mov    %edx,-0x24(%rbp)
  mov    -0x1c(%rbp),%edx
  movslq %edx,%rdx
  lea    0x0(,%rdx,8),%rcx
  mov    -0x18(%rbp),%rdx
  add    %rcx,%rdx
  mov    (%rdx),%rcx
  mov    -0x28(%rbp),%edx
  movslq %edx,%rdx
  shl    $0x2,%rdx
  add    %rcx,%rdx
  mov    %eax,(%rdx)
  subl   $0x1,-0x28(%rbp)
L112:
  mov    -0x28(%rbp),%eax
  cmp    -0x20(%rbp),%eax
  jg     L62
  mov    -0x1c(%rbp),%eax
  mov    %eax,-0x28(%rbp)
  jmp    L53
L51:
  mov    -0x24(%rbp),%eax
  lea    0x1(%rax),%edx
  mov    %edx,-0x24(%rbp)
  mov    -0x28(%rbp),%edx
  movslq %edx,%rdx
  lea    0x0(,%rdx,8),%rcx
  mov    -0x18(%rbp),%rdx
  add    %rcx,%rdx
  mov    (%rdx),%rcx
  mov    -0x20(%rbp),%edx
  movslq %edx,%rdx
  shl    $0x2,%rdx
  add    %rcx,%rdx
  mov    %eax,(%rdx)
  subl   $0x1,-0x28(%rbp)
L53:
  mov    -0x28(%rbp),%eax
  cmp    -0x20(%rbp),%eax
  jg     L51
  addl   $0x1,-0x20(%rbp)
  subl   $0x1,-0x1c(%rbp)
L115:
  mov    -0x20(%rbp),%eax
  cmp    -0x1c(%rbp),%eax
  jl     L76
  mov    -0x34(%rbp),%eax
  and    $0x1,%eax
  test   %eax,%eax
  je     L54
  mov    -0x24(%rbp),%eax
  lea    0x1(%rax),%edx
  mov    %edx,-0x24(%rbp)
  mov    -0x34(%rbp),%edx
  mov    %edx,%ecx
  shr    $0x1f,%ecx
  add    %ecx,%edx
  sar    %edx
  movslq %edx,%rdx
  lea    0x0(,%rdx,8),%rcx
  mov    -0x18(%rbp),%rdx
  add    %rcx,%rdx
  mov    (%rdx),%rcx
  mov    -0x34(%rbp),%edx
  mov    %edx,%esi
  shr    $0x1f,%esi
  add    %esi,%edx
  sar    %edx
  movslq %edx,%rdx
  shl    $0x2,%rdx
  add    %rcx,%rdx
  mov    %eax,(%rdx)
L54:
  mov    -0x18(%rbp),%rax
L17:
  mov    -0x8(%rbp),%rbx
  leave
  ret
```

assistant: ```c
int **generateMatrix(int n) {
  if (!n)
    return (NULL);
  int **m, i, squ, l, u;
  m = malloc(n * sizeof(int *));
  for (i = 0; i < n; i++)
    m[i] = malloc(n * sizeof(int));
  l = 0;
  u = n - 1;
  squ = 1;
  while (l < u) {
    for (i = l; i < u; i++)
      m[l][i] = squ++;
    for (i = l; i < u; i++)
      m[i][u] = squ++;
    for (i = u; i > l; i--)
      m[u][i] = squ++;
    for (i = u; i > l; i--)
      m[i][l] = squ++;
    l++;
    u--;
  }
  if (n % 2)
    m[n / 2][n / 2] = squ++;
  return (m);
}
```