user: 请显示与下面列出的汇编代码相匹配的C语言实现:

```asm
<generateMatrix>:
  endbr64
  push   %r15
  push   %r14
  push   %r13
  push   %r12
  mov    %edi,%r12d
  push   %rbp
  lea    0x0(,%r12,8),%edi
  push   %rbx
  lea    -0x1(%r12),%ebx
  sub    $0x18,%rsp
  call   <malloc@plt>
  mov    %rax,%r13
  mov    %r12d,%eax
  imul   %r12d,%eax
  mov    %eax,0xc(%rsp)
  test   %r12d,%r12d
  jle    L133
  lea    0x0(,%r12,4),%r14d
  mov    %r13,%rbp
  lea    0x0(%r13,%r12,8),%r12
  xchg   %ax,%ax
L127:
  mov    %r14d,%edi
  add    $0x8,%rbp
  call   <malloc@plt>
  mov    %rax,-0x8(%rbp)
  cmp    %r12,%rbp
  jne    L127
L15:
  movslq %ebx,%r12
  mov    %ebx,%ebp
  mov    %r13,%r14
  xor    %edi,%edi
  xor    %r10d,%r10d
  xor    %r11d,%r11d
  mov    $0x1,%eax
  nopw   0x0(%rax,%rax,1)
L121:
  cmp    %ebx,%r11d
  jg     L41
  mov    (%r14),%rdx
  lea    0x1(%rax),%ecx
  mov    %eax,%r9d
  lea    (%rcx,%rbx,1),%r8d
  add    %rdi,%rdx
  sub    %r11d,%r8d
  jmp    L98
  nopw   0x0(%rax,%rax,1)
L62:
  add    $0x1,%ecx
L98:
  mov    %eax,%esi
  add    $0x4,%rdx
  mov    %ecx,%eax
  mov    %esi,-0x4(%rdx)
  cmp    %r8d,%ecx
  jne    L62
  lea    0x1(%r9,%rbp,1),%eax
L41:
  add    $0x1,%r11d
  cmp    %ebx,%r11d
  jg     L30
  mov    %ebx,%r8d
  movslq %r11d,%rdx
  lea    0x0(,%r12,4),%r9
  mov    %eax,%r15d
  sub    %r10d,%r8d
  lea    0x0(%r13,%rdx,8),%rdx
  add    %eax,%r8d
  nopl   (%rax)
L58:
  mov    (%rdx),%rcx
  mov    %eax,%esi
  add    $0x1,%eax
  add    $0x8,%rdx
  mov    %esi,(%rcx,%r9,1)
  cmp    %r8d,%eax
  jne    L58
  lea    (%r15,%rbp,1),%eax
L30:
  sub    $0x1,%ebx
  cmp    %r10d,%ebx
  jl     L114
  mov    0x0(%r13,%r12,8),%rdx
  mov    %r12d,%esi
  movslq %ebx,%r8
  mov    %eax,%r9d
  sub    %r10d,%esi
  lea    (%rdx,%r8,4),%rdx
  add    %eax,%esi
  nopl   0x0(%rax,%rax,1)
L22:
  mov    %eax,%ecx
  add    $0x1,%eax
  sub    $0x4,%rdx
  mov    %ecx,0x4(%rdx)
  cmp    %esi,%eax
  jne    L22
  lea    (%r9,%rbp,1),%eax
  cmp    %r10d,%ebx
  jle    L114
  mov    %r12d,%ecx
  lea    0x0(%r13,%r8,8),%rdx
  mov    %eax,%r9d
  sub    %r10d,%ecx
  lea    -0x1(%rax,%rcx,1),%r8d
  nopl   0x0(%rax)
L61:
  mov    (%rdx),%rcx
  mov    %eax,%esi
  add    $0x1,%eax
  sub    $0x8,%rdx
  mov    %esi,(%rcx,%rdi,1)
  cmp    %r8d,%eax
  jne    L61
  lea    -0x1(%r9,%rbp,1),%eax
L114:
  add    $0x1,%r10d
  sub    $0x1,%r12
  sub    $0x2,%ebp
  add    $0x8,%r14
  add    $0x4,%rdi
  cmp    %eax,0xc(%rsp)
  jge    L121
L74:
  add    $0x18,%rsp
  mov    %r13,%rax
  pop    %rbx
  pop    %rbp
  pop    %r12
  pop    %r13
  pop    %r14
  pop    %r15
  ret
L133:
  mov    0xc(%rsp),%eax
  test   %eax,%eax
  je     L74
  jmp    L15
```

assistant: ```c
int **generateMatrix(int n) {
  int **result = (int **)malloc(sizeof(int *) * n);
  int i, k;
  for (i = 0; i < n; i++) {
    result[i] = (int *)malloc(sizeof(int) * n);
  }
  int start, end;
  k = 1;
  start = 0;
  end = n - 1;
  while (k <= n * n) {
    for (i = start; i <= end; i++) {
      result[start][i] = k++;
    }
    for (i = start + 1; i <= end; i++) {
      result[i][end] = k++;
    }
    for (i = end - 1; i >= start; i--) {
      result[end][i] = k++;
    }
    for (i = end - 1; i > start; i--) {
      result[i][start] = k++;
    }
    start++;
    end--;
  }
  return result;
}
```