user: 请从给定的汇编指令推导出C源代码：

```asm
<idontunderstand>:
  endbr64
  sub    $0x68,%rsp
  mov    %fs:0x28,%rax
  mov    %rax,0x58(%rsp)
  xor    %eax,%eax
  lea    D38(%rip),%rax
  mov    %rax,(%rsp)
  lea    D69(%rip),%rax
  mov    %rax,0x8(%rsp)
  lea    D130(%rip),%rax
  mov    %rax,0x10(%rsp)
  lea    D62(%rip),%rax
  mov    %rax,0x18(%rsp)
  lea    D50(%rip),%rax
  mov    %rax,0x20(%rsp)
  lea    D26(%rip),%rax
  mov    %rax,0x28(%rsp)
  lea    D135(%rip),%rax
  mov    %rax,0x30(%rsp)
  lea    D79(%rip),%rax
  mov    %rax,0x38(%rsp)
  lea    D47(%rip),%rax
  mov    %rax,0x40(%rsp)
  lea    D94(%rip),%rax
  mov    %rax,0x48(%rsp)
  lea    D136(%rip),%rax
  mov    %rax,0x50(%rsp)
  cmpb   $0x0,(%rdi)
  jne    L11
L4:
  mov    0x58(%rsp),%rax
  sub    %fs:0x28,%rax
  jne    L26
  add    $0x68,%rsp
  ret
L11:
  mov    %rdi,%rsi
  movslq D2(%rip),%rax
  mov    (%rsp,%rax,8),%rdi
  call   <printf@plt>
  mov    D2(%rip),%eax
  lea    0x1(%rax),%ecx
  movslq %ecx,%rcx
  movabs $0x2e8ba2e8ba2e8ba3,%rdx
  mov    %rcx,%rax
  mul    %rdx
  shr    %rdx
  lea    (%rdx,%rdx,4),%rax
  lea    (%rdx,%rax,2),%rax
  sub    %rax,%rcx
  mov    %ecx,D145(%rip)
  lea    D145(%rip),%rdi
  call   <puts@plt>
  jmp    L4
L26:
  call   <__stack_chk_fail@plt>
```

tool_calls: name: unpack_data
arguments: tag: D38
datatype: string
name: unpack_data
arguments: tag: D69
datatype: string
name: unpack_data
arguments: tag: D130
datatype: string
name: unpack_data
arguments: tag: D62
datatype: string
name: unpack_data
arguments: tag: D50
datatype: string
name: unpack_data
arguments: tag: D26
datatype: string
name: unpack_data
arguments: tag: D135
datatype: string
name: unpack_data
arguments: tag: D79
datatype: string
name: unpack_data
arguments: tag: D47
datatype: string
name: unpack_data
arguments: tag: D94
datatype: string
name: unpack_data
arguments: tag: D136
datatype: string
name: unpack_data
arguments: tag: D145
datatype: string

tool: D38: I do not understand '%s'.

tool: D69: What does '%s' mean?

tool: D130: '%s'? Come again?

tool: D62: I know not of this '%s' of which thy speak.

tool: D50: Perhaps one day I will know the meaning of '%s'.

tool: D26: '%s'? What's that? Some kind of strange fruit?

tool: D135: '%s'? Is that like a slime mold?

tool: D79: Of course, of course, '%s'! I understand! Just kidding, I don't know what that means.

tool: D47: Somewhere, there is some machine that understands '%s'. Unfortunately, it is not this one.

tool: D94: Maybe one day, I will understand the true meaning of your words, such as '%s'. Alas, that day is not today.

tool: D136: Your words carry far,
From the white coast of Albion,
To the towering peaks of the Himalayas,
From the soft tundras of the Norden,
To the wisping sands of the Sahara.
I hear them resounding throughout the world.
But I know naught their meaning,
Nor do I know that of your prose or poems,
Of your heart or soul,
Of the word '%s'.

tool: 

assistant: ```c
void idontunderstand(const char *stuff) {
  const char *words[] = {"I do not understand '%s'.",
                         "What does '%s' mean?",
                         "'%s'? Come again?",
                         "I know not of this '%s' of which thy speak.",
                         "Perhaps one day I will know the meaning of '%s'.",
                         "'%s'? What's that? Some kind of strange fruit?",
                         "'%s'? Is that like a slime mold?",
                         "Of course, of course, '%s'! I understand! Just kidding, I don't know what that means.",
                         "Somewhere, there is some machine that understands '%s'. Unfortunately, it is not this one.",
                         "Maybe one day, I will understand the true meaning of your words, such as '%s'. Alas, that day is not today.",
                         "Your words carry far,\n"
                         "From the white coast of Albion,\n"
                         "To the towering peaks of the Himalayas,\n"
                         "From the soft tundras of the Norden,\n"
                         "To the wisping sands of the Sahara.\n"
                         "I hear them resounding throughout the world.\n"
                         "But I know naught their meaning,\n"
                         "Nor do I know that of your prose or poems,\n"
                         "Of your heart or soul,\n"
                         "Of the word '%s'."};
  static int i = 0;
  if (!*stuff)
    return;
  printf(words[i], stuff);
  i = (i + 1) % (sizeof(words) / sizeof(*(words)));
  puts("");
}
```