user: 这段汇编代码用C语言表示是什么样的：

```asm
<fib>:
  endbr64
  mov    %edi,%r10d
  test   %edi,%edi
  je     L232
  cmp    $0x1,%edi
  je     L232
  push   %r15
  lea    -0x2(%rdi),%eax
  xor    %r10d,%r10d
  push   %r14
  push   %r13
  push   %r12
  push   %rbp
  push   %rbx
  sub    $0x38,%rsp
  mov    %eax,0x4(%rsp)
  mov    %r10d,0x10(%rsp)
L516:
  mov    0x4(%rsp),%edi
  mov    %edi,%eax
  add    $0x1,%eax
  je     L57
  cmp    $0x1,%eax
  je     L123
  lea    -0x1(%rdi),%eax
  xor    %r8d,%r8d
  mov    %eax,0x8(%rsp)
  mov    %r8d,0x14(%rsp)
L194:
  mov    0x8(%rsp),%edi
  mov    %edi,%eax
  add    $0x1,%eax
  je     L427
  cmp    $0x1,%eax
  je     L152
  lea    -0x1(%rdi),%eax
  xor    %ecx,%ecx
  mov    %eax,0xc(%rsp)
  mov    %ecx,0x18(%rsp)
L34:
  mov    0xc(%rsp),%edi
  mov    %edi,%eax
  add    $0x1,%eax
  je     L448
  cmp    $0x1,%eax
  je     L73
  xor    %ecx,%ecx
  lea    -0x1(%rdi),%r8d
  mov    %ecx,0x1c(%rsp)
  mov    %r8d,%ecx
L506:
  mov    %ecx,%eax
  add    $0x1,%eax
  je     L36
  cmp    $0x1,%eax
  je     L45
  xor    %esi,%esi
  mov    %ecx,0x20(%rsp)
  lea    -0x1(%rcx),%r9d
  mov    %esi,(%rsp)
  mov    %r9d,%r15d
L219:
  mov    %r15d,%eax
  add    $0x1,%eax
  je     L88
  cmp    $0x1,%eax
  je     L228
  lea    -0x1(%r15),%r12d
  xor    %ecx,%ecx
  mov    %r15d,%esi
L122:
  mov    %r12d,%eax
  add    $0x1,%eax
  je     L477
  cmp    $0x1,%eax
  je     L128
  xor    %ebx,%ebx
  lea    -0x1(%r12),%ebp
  mov    %r12d,%edx
  mov    %ebx,%r12d
L140:
  mov    %ebp,%eax
  add    $0x1,%eax
  je     L371
  cmp    $0x1,%eax
  je     L422
  mov    %ebp,%eax
  lea    -0x1(%rbp),%ebx
  xor    %r14d,%r14d
  mov    %ecx,%ebp
  mov    %eax,%ecx
L20:
  mov    %ebx,%r13d
  add    $0x1,%r13d
  je     L222
  cmp    $0x1,%r13d
  je     L48
  mov    %ebx,0x24(%rsp)
  xor    %r15d,%r15d
  mov    %esi,%ebx
L75:
  lea    -0x1(%r13),%edi
  mov    %ecx,0x2c(%rsp)
  mov    %edx,0x28(%rsp)
  call   <fib>
  mov    0x28(%rsp),%edx
  mov    0x2c(%rsp),%ecx
  add    %eax,%r15d
  sub    $0x2,%r13d
  je     L473
  cmp    $0x1,%r13d
  jne    L75
  mov    %ebx,%esi
  mov    0x24(%rsp),%ebx
  add    $0x1,%r15d
L410:
  add    %r15d,%r14d
  test   %ebx,%ebx
  je     L384
  cmp    $0x1,%ebx
  jne    L222
L48:
  mov    %ecx,%eax
  add    $0x1,%r14d
  mov    %ebp,%ecx
  mov    %eax,%ebp
  add    %r14d,%r12d
  test   %ebp,%ebp
  je     L231
L70:
  cmp    $0x1,%ebp
  jne    L371
L422:
  mov    %r12d,%ebx
  mov    %edx,%r12d
  add    $0x1,%ebx
L199:
  add    %ebx,%ecx
  test   %r12d,%r12d
  jne    L484
  mov    %esi,%r15d
  mov    %ecx,%r14d
  add    %r14d,(%rsp)
  mov    (%rsp),%esi
  test   %r15d,%r15d
  jne    L490
L190:
  mov    0x20(%rsp),%ecx
  add    %esi,0x1c(%rsp)
  test   %ecx,%ecx
  je     L389
L109:
  cmp    $0x1,%ecx
  je     L45
L36:
  sub    $0x2,%ecx
  jmp    L506
L371:
  sub    $0x2,%ebp
  jmp    L140
L484:
  cmp    $0x1,%r12d
  jne    L477
L128:
  mov    %ecx,%r14d
  mov    %esi,%r15d
  add    $0x1,%r14d
  add    %r14d,(%rsp)
  mov    (%rsp),%esi
  test   %r15d,%r15d
  je     L190
L490:
  cmp    $0x1,%r15d
  je     L61
L88:
  sub    $0x2,%r15d
  jmp    L219
L477:
  sub    $0x2,%r12d
  jmp    L122
L384:
  mov    %ecx,%eax
  mov    %ebp,%ecx
  add    %r14d,%r12d
  mov    %eax,%ebp
  test   %ebp,%ebp
  jne    L70
L231:
  mov    %r12d,%ebx
  mov    %edx,%r12d
  jmp    L199
  nopl   (%rax)
L473:
  mov    %ebx,%esi
  mov    0x24(%rsp),%ebx
  jmp    L410
L228:
  mov    (%rsp),%esi
L61:
  mov    0x20(%rsp),%ecx
  add    $0x1,%esi
  add    %esi,0x1c(%rsp)
  test   %ecx,%ecx
  jne    L109
L389:
  mov    0x1c(%rsp),%ecx
  add    %ecx,0x18(%rsp)
  mov    0xc(%rsp),%ecx
  test   %ecx,%ecx
  jne    L511
L119:
  mov    0x8(%rsp),%edx
  mov    0x18(%rsp),%ecx
  add    %ecx,0x14(%rsp)
  test   %edx,%edx
  jne    L209
L518:
  mov    0x14(%rsp),%r8d
  jmp    L9
L222:
  sub    $0x2,%ebx
  jmp    L20
L45:
  mov    0x1c(%rsp),%ecx
  add    $0x1,%ecx
  add    %ecx,0x18(%rsp)
  mov    0xc(%rsp),%ecx
  test   %ecx,%ecx
  je     L119
L511:
  cmpl   $0x1,0xc(%rsp)
  je     L73
L448:
  subl   $0x2,0xc(%rsp)
  jmp    L34
L73:
  mov    0x18(%rsp),%ecx
  mov    0x8(%rsp),%edx
  add    $0x1,%ecx
  add    %ecx,0x14(%rsp)
  test   %edx,%edx
  je     L518
L209:
  cmpl   $0x1,0x8(%rsp)
  je     L152
L427:
  subl   $0x2,0x8(%rsp)
  jmp    L194
L152:
  mov    0x14(%rsp),%r8d
  add    $0x1,%r8d
L9:
  mov    0x4(%rsp),%eax
  add    %r8d,0x10(%rsp)
  test   %eax,%eax
  je     L462
  cmpl   $0x1,0x4(%rsp)
  jne    L57
L123:
  mov    0x10(%rsp),%r10d
  add    $0x1,%r10d
L3:
  add    $0x38,%rsp
  mov    %r10d,%eax
  pop    %rbx
  pop    %rbp
  pop    %r12
  pop    %r13
  pop    %r14
  pop    %r15
  ret
L57:
  subl   $0x2,0x4(%rsp)
  jmp    L516
L232:
  mov    %r10d,%eax
  ret
L462:
  mov    0x10(%rsp),%r10d
  jmp    L3
```

assistant: ```c
int fib(int n) {
  if (n == 0)
    return 0;
  else if (n == 1)
    return 1;
  else
    return fib(n - 1) + fib(n - 2);
}
```