user: 请将以下的汇编代码转换成C语言代码:

```asm
<fib>:
  endbr64
  mov    %edi,%r10d
  test   %edi,%edi
  je     L144
  cmp    $0x1,%edi
  je     L144
  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)
L325:
  mov    0x4(%rsp),%edi
  mov    %edi,%eax
  add    $0x1,%eax
  je     L76
  cmp    $0x1,%eax
  je     L126
  lea    -0x1(%rdi),%eax
  xor    %r8d,%r8d
  mov    %eax,0x8(%rsp)
  mov    %r8d,0x14(%rsp)
L12:
  mov    0x8(%rsp),%edi
  mov    %edi,%eax
  add    $0x1,%eax
  je     L286
  cmp    $0x1,%eax
  je     L97
  lea    -0x1(%rdi),%eax
  xor    %ecx,%ecx
  mov    %eax,0xc(%rsp)
  mov    %ecx,0x18(%rsp)
L281:
  mov    0xc(%rsp),%edi
  mov    %edi,%eax
  add    $0x1,%eax
  je     L416
  cmp    $0x1,%eax
  je     L401
  xor    %ecx,%ecx
  lea    -0x1(%rdi),%r8d
  mov    %ecx,0x1c(%rsp)
  mov    %r8d,%ecx
L396:
  mov    %ecx,%eax
  add    $0x1,%eax
  je     L500
  cmp    $0x1,%eax
  je     L391
  xor    %esi,%esi
  mov    %ecx,0x20(%rsp)
  lea    -0x1(%rcx),%r9d
  mov    %esi,(%rsp)
  mov    %r9d,%r15d
L482:
  mov    %r15d,%eax
  add    $0x1,%eax
  je     L269
  cmp    $0x1,%eax
  je     L355
  lea    -0x1(%r15),%r12d
  xor    %ecx,%ecx
  mov    %r15d,%esi
L383:
  mov    %r12d,%eax
  add    $0x1,%eax
  je     L149
  cmp    $0x1,%eax
  je     L96
  xor    %ebx,%ebx
  lea    -0x1(%r12),%ebp
  mov    %r12d,%edx
  mov    %ebx,%r12d
L346:
  mov    %ebp,%eax
  add    $0x1,%eax
  je     L215
  cmp    $0x1,%eax
  je     L331
  mov    %ebp,%eax
  lea    -0x1(%rbp),%ebx
  xor    %r14d,%r14d
  mov    %ecx,%ebp
  mov    %eax,%ecx
L1:
  mov    %ebx,%r13d
  add    $0x1,%r13d
  je     L374
  cmp    $0x1,%r13d
  je     L58
  mov    %ebx,0x24(%rsp)
  xor    %r15d,%r15d
  mov    %esi,%ebx
L282:
  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     L201
  cmp    $0x1,%r13d
  jne    L282
  mov    %ebx,%esi
  mov    0x24(%rsp),%ebx
  add    $0x1,%r15d
L340:
  add    %r15d,%r14d
  test   %ebx,%ebx
  je     L91
  cmp    $0x1,%ebx
  jne    L374
L58:
  mov    %ecx,%eax
  add    $0x1,%r14d
  mov    %ebp,%ecx
  mov    %eax,%ebp
  add    %r14d,%r12d
  test   %ebp,%ebp
  je     L334
L129:
  cmp    $0x1,%ebp
  jne    L215
L331:
  mov    %r12d,%ebx
  mov    %edx,%r12d
  add    $0x1,%ebx
L175:
  add    %ebx,%ecx
  test   %r12d,%r12d
  jne    L5
  mov    %esi,%r15d
  mov    %ecx,%r14d
  add    %r14d,(%rsp)
  mov    (%rsp),%esi
  test   %r15d,%r15d
  jne    L39
L460:
  mov    0x20(%rsp),%ecx
  add    %esi,0x1c(%rsp)
  test   %ecx,%ecx
  je     L181
L356:
  cmp    $0x1,%ecx
  je     L391
L500:
  sub    $0x2,%ecx
  jmp    L396
L215:
  sub    $0x2,%ebp
  jmp    L346
L5:
  cmp    $0x1,%r12d
  jne    L149
L96:
  mov    %ecx,%r14d
  mov    %esi,%r15d
  add    $0x1,%r14d
  add    %r14d,(%rsp)
  mov    (%rsp),%esi
  test   %r15d,%r15d
  je     L460
L39:
  cmp    $0x1,%r15d
  je     L116
L269:
  sub    $0x2,%r15d
  jmp    L482
L149:
  sub    $0x2,%r12d
  jmp    L383
L91:
  mov    %ecx,%eax
  mov    %ebp,%ecx
  add    %r14d,%r12d
  mov    %eax,%ebp
  test   %ebp,%ebp
  jne    L129
L334:
  mov    %r12d,%ebx
  mov    %edx,%r12d
  jmp    L175
  nopl   (%rax)
L201:
  mov    %ebx,%esi
  mov    0x24(%rsp),%ebx
  jmp    L340
L355:
  mov    (%rsp),%esi
L116:
  mov    0x20(%rsp),%ecx
  add    $0x1,%esi
  add    %esi,0x1c(%rsp)
  test   %ecx,%ecx
  jne    L356
L181:
  mov    0x1c(%rsp),%ecx
  add    %ecx,0x18(%rsp)
  mov    0xc(%rsp),%ecx
  test   %ecx,%ecx
  jne    L102
L250:
  mov    0x8(%rsp),%edx
  mov    0x18(%rsp),%ecx
  add    %ecx,0x14(%rsp)
  test   %edx,%edx
  jne    L82
L287:
  mov    0x14(%rsp),%r8d
  jmp    L303
L374:
  sub    $0x2,%ebx
  jmp    L1
L391:
  mov    0x1c(%rsp),%ecx
  add    $0x1,%ecx
  add    %ecx,0x18(%rsp)
  mov    0xc(%rsp),%ecx
  test   %ecx,%ecx
  je     L250
L102:
  cmpl   $0x1,0xc(%rsp)
  je     L401
L416:
  subl   $0x2,0xc(%rsp)
  jmp    L281
L401:
  mov    0x18(%rsp),%ecx
  mov    0x8(%rsp),%edx
  add    $0x1,%ecx
  add    %ecx,0x14(%rsp)
  test   %edx,%edx
  je     L287
L82:
  cmpl   $0x1,0x8(%rsp)
  je     L97
L286:
  subl   $0x2,0x8(%rsp)
  jmp    L12
L97:
  mov    0x14(%rsp),%r8d
  add    $0x1,%r8d
L303:
  mov    0x4(%rsp),%eax
  add    %r8d,0x10(%rsp)
  test   %eax,%eax
  je     L254
  cmpl   $0x1,0x4(%rsp)
  jne    L76
L126:
  mov    0x10(%rsp),%r10d
  add    $0x1,%r10d
L300:
  add    $0x38,%rsp
  mov    %r10d,%eax
  pop    %rbx
  pop    %rbp
  pop    %r12
  pop    %r13
  pop    %r14
  pop    %r15
  ret
L76:
  subl   $0x2,0x4(%rsp)
  jmp    L325
L144:
  mov    %r10d,%eax
  ret
L254:
  mov    0x10(%rsp),%r10d
  jmp    L300
```

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