user: 请显示与下面列出的汇编代码相匹配的C语言实现：

```asm
<fibonacci>:
  endbr64
  mov    %edi,%r11d
  test   %edi,%edi
  je     L281
  cmp    $0x1,%edi
  je     L281
  push   %r15
  xor    %r11d,%r11d
  push   %r14
  push   %r13
  push   %r12
  push   %rbp
  push   %rbx
  sub    $0x38,%rsp
  mov    %edi,(%rsp)
  mov    %r11d,0x4(%rsp)
L258:
  mov    (%rsp),%eax
  xor    %r9d,%r9d
  mov    %r9d,0x8(%rsp)
  sub    $0x1,%eax
  mov    %eax,0x24(%rsp)
L256:
  mov    0x24(%rsp),%eax
  cmp    $0x1,%eax
  je     L119
  sub    $0x1,%eax
  xor    %esi,%esi
  mov    %eax,0x28(%rsp)
  mov    %esi,0xc(%rsp)
L1:
  mov    0x28(%rsp),%eax
  cmp    $0x1,%eax
  je     L11
  xor    %esi,%esi
  lea    -0x1(%rax),%r9d
  mov    %esi,0x10(%rsp)
  mov    %r9d,%esi
L112:
  cmp    $0x1,%esi
  je     L83
  xor    %r8d,%r8d
  mov    %esi,0x2c(%rsp)
  lea    -0x1(%rsi),%r10d
  mov    %r8d,0x14(%rsp)
  mov    %r10d,%r15d
L191:
  cmp    $0x1,%r15d
  je     L232
  lea    -0x1(%r15),%r12d
  mov    %r15d,%ecx
  xor    %r8d,%r8d
  mov    %r12d,%r15d
L45:
  cmp    $0x1,%r15d
  je     L161
  xor    %r13d,%r13d
  lea    -0x1(%r15),%ebx
  mov    %r15d,%edx
  mov    %r13d,%r15d
L102:
  cmp    $0x1,%ebx
  je     L101
  mov    %r15d,%eax
  lea    -0x1(%rbx),%r13d
  mov    %ebx,%r15d
  xor    %r12d,%r12d
  mov    %ecx,%ebx
  mov    %eax,%ecx
L24:
  cmp    $0x1,%r13d
  je     L35
  mov    %r13d,0x18(%rsp)
  lea    -0x1(%r13),%ebp
  xor    %r14d,%r14d
  mov    %r8d,%r13d
  mov    %r12d,0x1c(%rsp)
  mov    %edx,%r12d
L124:
  cmp    $0x1,%ebp
  je     L97
  lea    -0x1(%rbp),%edi
  mov    %ecx,0x20(%rsp)
  call   <fibonacci>
  mov    0x20(%rsp),%ecx
  add    %eax,%r14d
  sub    $0x2,%ebp
  jne    L124
  mov    %r12d,%edx
  mov    %r13d,%r8d
  mov    0x1c(%rsp),%r12d
  mov    0x18(%rsp),%r13d
L10:
  add    %r14d,%r12d
  sub    $0x2,%r13d
  jne    L24
  mov    %ecx,%eax
  mov    %ebx,%ecx
  mov    %r15d,%ebx
  mov    %eax,%r15d
L273:
  add    %r12d,%r15d
  sub    $0x2,%ebx
  jne    L102
  mov    %r15d,%r13d
  mov    %edx,%r15d
L98:
  add    %r13d,%r8d
  sub    $0x2,%r15d
  jne    L45
  mov    %ecx,%r15d
L276:
  add    %r8d,0x14(%rsp)
  sub    $0x2,%r15d
  jne    L191
  mov    0x2c(%rsp),%esi
  mov    0x14(%rsp),%r8d
L234:
  add    %r8d,0x10(%rsp)
  sub    $0x2,%esi
  jne    L112
  mov    0x10(%rsp),%esi
L227:
  add    %esi,0xc(%rsp)
  subl   $0x2,0x28(%rsp)
  jne    L1
  mov    0xc(%rsp),%esi
L288:
  add    %esi,0x8(%rsp)
  subl   $0x2,0x24(%rsp)
  jne    L256
  mov    0x8(%rsp),%r9d
  add    %r9d,0x4(%rsp)
  subl   $0x2,(%rsp)
  jne    L220
L255:
  mov    0x4(%rsp),%r11d
  jmp    L241
  nopl   0x0(%rax)
L97:
  mov    %r12d,%edx
  mov    %r13d,%r8d
  mov    0x1c(%rsp),%r12d
  mov    0x18(%rsp),%r13d
  add    $0x1,%r14d
  jmp    L10
  nopl   0x0(%rax)
L35:
  mov    %ecx,%eax
  add    $0x1,%r12d
  mov    %ebx,%ecx
  mov    %r15d,%ebx
  mov    %eax,%r15d
  jmp    L273
L161:
  mov    %ecx,%r15d
  add    $0x1,%r8d
  jmp    L276
L101:
  mov    %r15d,%r13d
  mov    %edx,%r15d
  add    $0x1,%r13d
  jmp    L98
L232:
  mov    0x14(%rsp),%r8d
  mov    0x2c(%rsp),%esi
  add    $0x1,%r8d
  jmp    L234
L83:
  mov    0x10(%rsp),%esi
  add    $0x1,%esi
  jmp    L227
L11:
  mov    0xc(%rsp),%esi
  add    $0x1,%esi
  jmp    L288
L119:
  mov    0x8(%rsp),%r9d
  add    $0x1,%r9d
  add    %r9d,0x4(%rsp)
  subl   $0x2,(%rsp)
  je     L255
L220:
  cmpl   $0x1,(%rsp)
  jne    L258
  mov    0x4(%rsp),%r11d
  add    $0x1,%r11d
L241:
  add    $0x38,%rsp
  mov    %r11d,%eax
  pop    %rbx
  pop    %rbp
  pop    %r12
  pop    %r13
  pop    %r14
  pop    %r15
  ret
L281:
  mov    %r11d,%eax
  ret
```

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