user: What is the c source code of the assembly code below:

```asm
<fibo>:
  endbr64
  mov    %edi,%r10d
  test   %edi,%edi
  je     L130
  cmp    $0x1,%edi
  je     L130
  push   %r15
  lea    -0x2(%rdi),%eax
  xor    %r10d,%r10d
  push   %r14
  push   %r13
  push   %r12
  push   %rbp
  push   %rbx
  sub    $0x38,%rsp
  mov    %eax,0x8(%rsp)
  mov    %r10d,0x10(%rsp)
L135:
  mov    0x8(%rsp),%edi
  mov    %edi,%eax
  add    $0x1,%eax
  je     L174
  cmp    $0x1,%eax
  je     L424
  lea    -0x1(%rdi),%eax
  xor    %r8d,%r8d
  mov    %eax,0x4(%rsp)
  mov    %r8d,0x14(%rsp)
L98:
  mov    0x4(%rsp),%edi
  mov    %edi,%eax
  add    $0x1,%eax
  je     L10
  cmp    $0x1,%eax
  je     L255
  lea    -0x1(%rdi),%eax
  xor    %ecx,%ecx
  mov    %eax,0xc(%rsp)
  mov    %ecx,0x18(%rsp)
L439:
  mov    0xc(%rsp),%edi
  mov    %edi,%eax
  add    $0x1,%eax
  je     L45
  cmp    $0x1,%eax
  je     L386
  xor    %ecx,%ecx
  lea    -0x1(%rdi),%r8d
  mov    %ecx,0x1c(%rsp)
  mov    %r8d,%ecx
L408:
  mov    %ecx,%eax
  add    $0x1,%eax
  je     L288
  cmp    $0x1,%eax
  je     L335
  xor    %esi,%esi
  mov    %ecx,0x20(%rsp)
  lea    -0x1(%rcx),%r9d
  mov    %esi,(%rsp)
  mov    %r9d,%r15d
L410:
  mov    %r15d,%eax
  add    $0x1,%eax
  je     L290
  cmp    $0x1,%eax
  je     L217
  lea    -0x1(%r15),%r12d
  xor    %ecx,%ecx
  mov    %r15d,%esi
L189:
  mov    %r12d,%eax
  add    $0x1,%eax
  je     L524
  cmp    $0x1,%eax
  je     L409
  xor    %ebx,%ebx
  lea    -0x1(%r12),%ebp
  mov    %r12d,%edx
  mov    %ebx,%r12d
L156:
  mov    %ebp,%eax
  add    $0x1,%eax
  je     L390
  cmp    $0x1,%eax
  je     L273
  mov    %ebp,%eax
  lea    -0x1(%rbp),%ebx
  xor    %r14d,%r14d
  mov    %ecx,%ebp
  mov    %eax,%ecx
L243:
  mov    %ebx,%r13d
  add    $0x1,%r13d
  je     L480
  cmp    $0x1,%r13d
  je     L400
  mov    %ebx,0x24(%rsp)
  xor    %r15d,%r15d
  mov    %esi,%ebx
L361:
  lea    -0x1(%r13),%edi
  mov    %ecx,0x2c(%rsp)
  mov    %edx,0x28(%rsp)
  call   <fibo>
  mov    0x28(%rsp),%edx
  mov    0x2c(%rsp),%ecx
  add    %eax,%r15d
  sub    $0x2,%r13d
  je     L34
  cmp    $0x1,%r13d
  jne    L361
  mov    %ebx,%esi
  mov    0x24(%rsp),%ebx
  add    $0x1,%r15d
L423:
  add    %r15d,%r14d
  test   %ebx,%ebx
  je     L367
  cmp    $0x1,%ebx
  jne    L480
L400:
  mov    %ecx,%eax
  add    $0x1,%r14d
  mov    %ebp,%ecx
  mov    %eax,%ebp
  add    %r14d,%r12d
  test   %ebp,%ebp
  je     L177
L370:
  cmp    $0x1,%ebp
  jne    L390
L273:
  mov    %r12d,%ebx
  mov    %edx,%r12d
  add    $0x1,%ebx
L445:
  add    %ebx,%ecx
  test   %r12d,%r12d
  jne    L514
  mov    %esi,%r15d
  mov    %ecx,%r14d
  add    %r14d,(%rsp)
  mov    (%rsp),%esi
  test   %r15d,%r15d
  jne    L26
L59:
  mov    0x20(%rsp),%ecx
  add    %esi,0x1c(%rsp)
  test   %ecx,%ecx
  je     L138
L488:
  cmp    $0x1,%ecx
  je     L335
L288:
  sub    $0x2,%ecx
  jmp    L408
L390:
  sub    $0x2,%ebp
  jmp    L156
L514:
  cmp    $0x1,%r12d
  jne    L524
L409:
  mov    %ecx,%r14d
  mov    %esi,%r15d
  add    $0x1,%r14d
  add    %r14d,(%rsp)
  mov    (%rsp),%esi
  test   %r15d,%r15d
  je     L59
L26:
  cmp    $0x1,%r15d
  je     L217
L290:
  sub    $0x2,%r15d
  jmp    L410
L524:
  sub    $0x2,%r12d
  jmp    L189
L367:
  mov    %ecx,%eax
  mov    %ebp,%ecx
  add    %r14d,%r12d
  mov    %eax,%ebp
  test   %ebp,%ebp
  jne    L370
L177:
  mov    %r12d,%ebx
  mov    %edx,%r12d
  jmp    L445
  nopl   (%rax)
L34:
  mov    %ebx,%esi
  mov    0x24(%rsp),%ebx
  jmp    L423
L217:
  mov    (%rsp),%esi
  mov    0x20(%rsp),%ecx
  add    $0x1,%esi
  add    %esi,0x1c(%rsp)
  test   %ecx,%ecx
  jne    L488
L138:
  mov    0x1c(%rsp),%ecx
  add    %ecx,0x18(%rsp)
  mov    0xc(%rsp),%ecx
  test   %ecx,%ecx
  jne    L527
L95:
  mov    0x4(%rsp),%edx
  mov    0x18(%rsp),%ecx
  add    %ecx,0x14(%rsp)
  test   %edx,%edx
  jne    L134
L171:
  mov    0x14(%rsp),%r8d
  jmp    L379
L480:
  sub    $0x2,%ebx
  jmp    L243
L335:
  mov    0x1c(%rsp),%ecx
  add    $0x1,%ecx
  add    %ecx,0x18(%rsp)
  mov    0xc(%rsp),%ecx
  test   %ecx,%ecx
  je     L95
L527:
  cmpl   $0x1,0xc(%rsp)
  je     L386
L45:
  subl   $0x2,0xc(%rsp)
  jmp    L439
L386:
  mov    0x18(%rsp),%ecx
  mov    0x4(%rsp),%edx
  add    $0x1,%ecx
  add    %ecx,0x14(%rsp)
  test   %edx,%edx
  je     L171
L134:
  cmpl   $0x1,0x4(%rsp)
  je     L255
L10:
  subl   $0x2,0x4(%rsp)
  jmp    L98
L255:
  mov    0x14(%rsp),%r8d
  add    $0x1,%r8d
L379:
  mov    0x8(%rsp),%eax
  add    %r8d,0x10(%rsp)
  test   %eax,%eax
  je     L467
  cmpl   $0x1,0x8(%rsp)
  jne    L174
L424:
  mov    0x10(%rsp),%r10d
  add    $0x1,%r10d
L482:
  add    $0x38,%rsp
  mov    %r10d,%eax
  pop    %rbx
  pop    %rbp
  pop    %r12
  pop    %r13
  pop    %r14
  pop    %r15
  ret
L174:
  subl   $0x2,0x8(%rsp)
  jmp    L135
L130:
  mov    %r10d,%eax
  ret
L467:
  mov    0x10(%rsp),%r10d
  jmp    L482
```

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