user: 下面的汇编指令对应的C源代码是什么：

```asm
<printMode>:
  endbr64
  push   %rbx
  mov    %edi,%ebx
  sub    $0x20,%rsp
  mov    %fs:0x28,%rax
  mov    %rax,0x18(%rsp)
  xor    %eax,%eax
  call   <S_ISBLK@plt>
  mov    %rax,%r8
  mov    $0x62,%eax
  test   %r8,%r8
  je     L18
L3:
  mov    %al,0xd(%rsp)
  mov    D74(%rip),%rax
  lea    0xd(%rsp),%rdi
  movb   $0x0,0x17(%rsp)
  mov    (%rax),%edx
  and    %ebx,%edx
  cmp    $0x1,%edx
  sbb    %eax,%eax
  and    $0xffffffbb,%eax
  add    $0x72,%eax
  mov    %al,0xe(%rsp)
  mov    D11(%rip),%rax
  mov    (%rax),%ecx
  and    %ebx,%ecx
  cmp    $0x1,%ecx
  sbb    %eax,%eax
  and    $0xffffffb6,%eax
  add    $0x77,%eax
  mov    %al,0xf(%rsp)
  mov    D35(%rip),%rax
  mov    (%rax),%esi
  and    %ebx,%esi
  cmp    $0x1,%esi
  sbb    %eax,%eax
  and    $0xffffffb5,%eax
  add    $0x78,%eax
  mov    %al,0x10(%rsp)
  mov    D99(%rip),%rax
  mov    (%rax),%edx
  and    %ebx,%edx
  cmp    $0x1,%edx
  sbb    %eax,%eax
  and    $0xffffffbb,%eax
  add    $0x72,%eax
  mov    %al,0x11(%rsp)
  mov    D1(%rip),%rax
  mov    (%rax),%ecx
  and    %ebx,%ecx
  cmp    $0x1,%ecx
  sbb    %eax,%eax
  and    $0xffffffb6,%eax
  add    $0x77,%eax
  mov    %al,0x12(%rsp)
  mov    D37(%rip),%rax
  mov    (%rax),%esi
  and    %ebx,%esi
  cmp    $0x1,%esi
  sbb    %eax,%eax
  and    $0xffffffb5,%eax
  add    $0x78,%eax
  mov    %al,0x13(%rsp)
  mov    D58(%rip),%rax
  mov    (%rax),%edx
  and    %ebx,%edx
  cmp    $0x1,%edx
  sbb    %eax,%eax
  and    $0xffffffbb,%eax
  add    $0x72,%eax
  mov    %al,0x14(%rsp)
  mov    D18(%rip),%rax
  mov    (%rax),%ecx
  and    %ebx,%ecx
  cmp    $0x1,%ecx
  sbb    %eax,%eax
  and    $0xffffffb6,%eax
  add    $0x77,%eax
  mov    %al,0x15(%rsp)
  mov    D59(%rip),%rax
  and    (%rax),%ebx
  cmp    $0x1,%ebx
  sbb    %eax,%eax
  and    $0xffffffb5,%eax
  add    $0x78,%eax
  mov    %al,0x16(%rsp)
  mov    D68(%rip),%rax
  mov    (%rax),%esi
  call   <fputs@plt>
  mov    0x18(%rsp),%rax
  sub    %fs:0x28,%rax
  jne    L12
  add    $0x20,%rsp
  pop    %rbx
  ret
  nop
L18:
  mov    %ebx,%edi
  call   <S_ISCHR@plt>
  mov    %rax,%r8
  mov    $0x63,%eax
  test   %r8,%r8
  jne    L3
  mov    %ebx,%edi
  call   <S_ISDIR@plt>
  mov    %rax,%r8
  mov    $0x64,%eax
  test   %r8,%r8
  jne    L3
  mov    %ebx,%edi
  call   <S_ISLNK@plt>
  mov    %rax,%r8
  mov    $0x6c,%eax
  test   %r8,%r8
  jne    L3
  mov    %ebx,%edi
  call   <S_ISFIFO@plt>
  mov    %rax,%r8
  mov    $0x70,%eax
  test   %r8,%r8
  jne    L3
  mov    %ebx,%edi
  call   <S_ISSOCK@plt>
  mov    %rax,%r8
  mov    $0x73,%eax
  test   %r8,%r8
  jne    L3
  mov    %ebx,%edi
  call   <S_ISREG@plt>
  cmp    $0x1,%rax
  sbb    %eax,%eax
  and    $0x12,%eax
  add    $0x2d,%eax
  jmp    L3
L12:
  call   <__stack_chk_fail@plt>
```

assistant: ```c
void printMode(mode_t mode) {
  char buffer[11];
  buffer[0] = S_ISBLK(mode) ? 'b' : S_ISCHR(mode) ? 'c' : S_ISDIR(mode) ? 'd' : S_ISLNK(mode) ? 'l' : S_ISFIFO(mode) ? 'p' : S_ISSOCK(mode) ? 's' : S_ISREG(mode) ? '-' : '?';
  buffer[1] = mode & S_IRUSR ? 'r' : '-';
  buffer[2] = mode & S_IWUSR ? 'w' : '-';
  buffer[3] = mode & S_IXUSR ? 'x' : '-';
  buffer[4] = mode & S_IRGRP ? 'r' : '-';
  buffer[5] = mode & S_IWGRP ? 'w' : '-';
  buffer[6] = mode & S_IXGRP ? 'x' : '-';
  buffer[7] = mode & S_IROTH ? 'r' : '-';
  buffer[8] = mode & S_IWOTH ? 'w' : '-';
  buffer[9] = mode & S_IXOTH ? 'x' : '-';
  buffer[10] = '\0';
  fputs(buffer, stdout);
}
```