user: 请将这段汇编代码片段转换成等效的C代码:

```asm
<t>:
  endbr64
  push   %r15
  push   %r14
  push   %r13
  movsbl %sil,%r13d
  push   %r12
  movsbl %cl,%r12d
  push   %rbp
  push   %rbx
  sub    $0x18,%rsp
  cmp    $0x1,%edi
  je     L14
  movsbl %dl,%ebp
  cmp    $0x2,%edi
  je     L52
  mov    %r12d,%edx
  mov    %r13d,%esi
  lea    D2(%rip),%r14
  cmp    $0x3,%edi
  je     L93
  cmp    $0x4,%edi
  je     L43
  lea    -0x4(%rdi),%ebx
  mov    %edi,0xc(%rsp)
  mov    %r12d,%ecx
  mov    %ebp,%edx
  mov    %ebx,%edi
  lea    D2(%rip),%r14
  call   <t>
  mov    %ebp,%edx
  mov    %r13d,%esi
  mov    %r14,%rdi
  call   <printf@plt>
  cmp    $0x1,%ebx
  mov    0xc(%rsp),%r8d
  je     L78
  lea    -0x5(%r8),%r15d
  mov    %r13d,%ecx
  mov    %ebp,%edx
  mov    %r12d,%esi
  mov    %r15d,%edi
  mov    %r8d,0xc(%rsp)
  call   <t>
  mov    %ebp,%ecx
  mov    %r13d,%edx
  mov    %r12d,%esi
  mov    $0x1,%edi
  call   <t>
  mov    %ebp,%ecx
  mov    %r12d,%edx
  mov    %r13d,%esi
  mov    %r15d,%edi
  call   <t>
  mov    %r12d,%edx
  mov    %r13d,%esi
  mov    %r14,%rdi
  call   <printf@plt>
  mov    %r12d,%ecx
  mov    %r13d,%edx
  mov    %ebp,%esi
  mov    %r15d,%edi
  call   <t>
  mov    %r13d,%ecx
  mov    %r12d,%edx
  mov    %ebp,%esi
  mov    $0x1,%edi
  call   <t>
  mov    %r13d,%ecx
  mov    %ebp,%edx
  mov    %r12d,%esi
  mov    %r15d,%edi
  call   <t>
  mov    %r12d,%edx
  mov    %ebp,%esi
  mov    %r14,%rdi
  call   <printf@plt>
  mov    %ebp,%ecx
  mov    %r12d,%edx
  mov    %r13d,%esi
  mov    %r15d,%edi
  call   <t>
  mov    %r12d,%ecx
  mov    %ebp,%edx
  mov    %r13d,%esi
  mov    $0x1,%edi
  call   <t>
  mov    %r12d,%ecx
  mov    %r13d,%edx
  mov    %ebp,%esi
  mov    %r15d,%edi
  call   <t>
  mov    %ebp,%edx
  mov    %r13d,%esi
  mov    %r14,%rdi
  call   <printf@plt>
  mov    %r13d,%ecx
  mov    %ebp,%edx
  mov    %r12d,%esi
  mov    %r15d,%edi
  call   <t>
  mov    %ebp,%ecx
  mov    %r13d,%edx
  mov    %r12d,%esi
  mov    $0x1,%edi
  call   <t>
  mov    %ebp,%ecx
  mov    %r12d,%edx
  mov    %r13d,%esi
  mov    %r15d,%edi
  call   <t>
  mov    %r13d,%edx
  mov    %r12d,%esi
  mov    %r14,%rdi
  call   <printf@plt>
  mov    %r13d,%ecx
  mov    %r12d,%edx
  mov    %ebp,%esi
  mov    %ebx,%edi
  call   <t>
  mov    %ebp,%edx
  mov    %r12d,%esi
  mov    %r14,%rdi
  call   <printf@plt>
  mov    %ebp,%ecx
  mov    %r12d,%edx
  mov    %r13d,%esi
  mov    %r15d,%edi
  call   <t>
  mov    %r12d,%ecx
  mov    %ebp,%edx
  mov    %r13d,%esi
  mov    $0x1,%edi
  call   <t>
  mov    %r12d,%ecx
  mov    %r13d,%edx
  mov    %ebp,%esi
  mov    %r15d,%edi
  call   <t>
  mov    %ebp,%edx
  mov    %r13d,%esi
  mov    %r14,%rdi
  call   <printf@plt>
  mov    %r13d,%ecx
  mov    %ebp,%edx
  mov    %r12d,%esi
  mov    %r15d,%edi
  call   <t>
  mov    %ebp,%ecx
  mov    %r13d,%edx
  mov    %r12d,%esi
  mov    $0x1,%edi
  call   <t>
  mov    %ebp,%ecx
  mov    %r12d,%edx
  mov    %r13d,%esi
  mov    %r15d,%edi
  call   <t>
  mov    0xc(%rsp),%r8d
L76:
  mov    %r12d,%edx
  mov    %r13d,%esi
  mov    %r14,%rdi
  mov    %r8d,0xc(%rsp)
  call   <printf@plt>
  cmp    $0x1,%ebx
  mov    0xc(%rsp),%r8d
  je     L3
  lea    -0x5(%r8),%r15d
  mov    %r12d,%ecx
  mov    %r13d,%edx
  mov    %ebp,%esi
  mov    %r15d,%edi
  call   <t>
  mov    %r13d,%ecx
  mov    %r12d,%edx
  mov    %ebp,%esi
  mov    $0x1,%edi
  call   <t>
  mov    %r13d,%ecx
  mov    %ebp,%edx
  mov    %r12d,%esi
  mov    %r15d,%edi
  call   <t>
  mov    %r12d,%edx
  mov    %ebp,%esi
  mov    %r14,%rdi
  call   <printf@plt>
  mov    %r12d,%ecx
  mov    %ebp,%edx
  mov    %r13d,%esi
  mov    %ebx,%edi
  call   <t>
  mov    %r13d,%edx
  mov    %ebp,%esi
  mov    %r14,%rdi
  call   <printf@plt>
  mov    %ebp,%ecx
  mov    %r13d,%edx
  mov    %r12d,%esi
  mov    %ebx,%edi
  call   <t>
  mov    %r13d,%edx
  mov    %r12d,%esi
  mov    %r14,%rdi
  call   <printf@plt>
  mov    %r13d,%ecx
  mov    %r12d,%edx
  mov    %ebp,%esi
  mov    %ebx,%edi
  call   <t>
  mov    %r12d,%edx
  mov    %ebp,%esi
  mov    %r14,%rdi
  call   <printf@plt>
  mov    %ebp,%ecx
  mov    %r12d,%edx
  mov    %r13d,%esi
  mov    %r15d,%edi
  call   <t>
  mov    %r12d,%ecx
  mov    %ebp,%edx
  mov    %r13d,%esi
  mov    $0x1,%edi
  call   <t>
  mov    %r12d,%ecx
  mov    %r13d,%edx
  mov    %ebp,%esi
  mov    %r15d,%edi
  call   <t>
  mov    %ebp,%edx
  mov    %r13d,%esi
  mov    %r14,%rdi
  call   <printf@plt>
  mov    %r13d,%ecx
  mov    %ebp,%edx
  mov    %r12d,%esi
  mov    %r15d,%edi
  call   <t>
  mov    %ebp,%ecx
  mov    %r13d,%edx
  mov    %r12d,%esi
  mov    $0x1,%edi
  call   <t>
  mov    %ebp,%ecx
  mov    %r12d,%edx
  mov    %r13d,%esi
  mov    %r15d,%edi
  call   <t>
  mov    %r12d,%edx
  mov    %r13d,%esi
  mov    %r14,%rdi
  call   <printf@plt>
  mov    %r12d,%ecx
  mov    %r13d,%edx
  mov    %ebp,%esi
  mov    %r15d,%edi
  call   <t>
  mov    %r13d,%ecx
  mov    %r12d,%edx
  mov    %ebp,%esi
  mov    $0x1,%edi
  call   <t>
  mov    %r13d,%ecx
  mov    %ebp,%edx
  mov    %r12d,%esi
  mov    %r15d,%edi
  call   <t>
  mov    %r12d,%edx
  mov    %ebp,%esi
  mov    %r14,%rdi
  call   <printf@plt>
  mov    %ebp,%ecx
  mov    %r12d,%edx
  mov    %r13d,%esi
  mov    %r15d,%edi
  call   <t>
  mov    %r12d,%ecx
  mov    %ebp,%edx
  mov    %r13d,%esi
  mov    $0x1,%edi
  call   <t>
  add    $0x18,%rsp
  mov    %r12d,%ecx
  mov    %r13d,%edx
  pop    %rbx
  mov    %ebp,%esi
  mov    %r15d,%edi
  pop    %rbp
  pop    %r12
  pop    %r13
  pop    %r14
  pop    %r15
  jmp    1120 <t>
  nopl   0x0(%rax,%rax,1)
L52:
  mov    %ebp,%edx
  mov    %r13d,%esi
  lea    D2(%rip),%r14
L24:
  mov    %r14,%rdi
  call   <printf@plt>
  mov    %r12d,%edx
  mov    %r13d,%esi
  mov    %r14,%rdi
  call   <printf@plt>
  mov    %r12d,%edx
  mov    %ebp,%esi
L79:
  mov    %r14,%rdi
L72:
  add    $0x18,%rsp
  pop    %rbx
  pop    %rbp
  pop    %r12
  pop    %r13
  pop    %r14
  pop    %r15
  jmp    1050 <printf@plt>
  nopl   (%rax)
L14:
  mov    %r12d,%edx
  mov    %r13d,%esi
  lea    D2(%rip),%rdi
  jmp    L72
  nopw   0x0(%rax,%rax,1)
L3:
  mov    %r13d,%edx
  mov    %ebp,%esi
  mov    %r14,%rdi
  call   <printf@plt>
  mov    %r12d,%edx
  mov    %ebp,%esi
  mov    %r14,%rdi
  call   <printf@plt>
  mov    %r12d,%ecx
  mov    %ebp,%edx
  mov    %r13d,%esi
  mov    $0x1,%edi
  call   <t>
  mov    %r13d,%edx
  mov    %ebp,%esi
  mov    %r14,%rdi
  call   <printf@plt>
  mov    %ebp,%ecx
  mov    %r13d,%edx
  mov    %r12d,%esi
  mov    $0x1,%edi
  call   <t>
  mov    %r13d,%edx
  mov    %r12d,%esi
  mov    %r14,%rdi
  call   <printf@plt>
  mov    %r13d,%ecx
  mov    %r12d,%edx
  mov    %ebp,%esi
  mov    $0x1,%edi
  call   <t>
  mov    %r12d,%edx
  mov    %ebp,%esi
  mov    %r14,%rdi
  call   <printf@plt>
  mov    %r12d,%edx
  mov    %r13d,%esi
L93:
  mov    %r14,%rdi
  call   <printf@plt>
  mov    %ebp,%edx
  mov    %r13d,%esi
  mov    %r14,%rdi
  call   <printf@plt>
  mov    %ebp,%edx
  mov    %r12d,%esi
  mov    %r14,%rdi
  call   <printf@plt>
  mov    %r12d,%edx
  mov    %r13d,%esi
  mov    %r14,%rdi
  call   <printf@plt>
  mov    %r13d,%edx
  mov    %ebp,%esi
  mov    %r14,%rdi
  call   <printf@plt>
  mov    %r12d,%edx
  mov    %ebp,%esi
  mov    %r14,%rdi
  call   <printf@plt>
  mov    %r12d,%edx
  mov    %r13d,%esi
  jmp    L79
  nopl   0x0(%rax,%rax,1)
L43:
  lea    D2(%rip),%r14
  mov    %ebp,%edx
  mov    %r14,%rdi
  call   <printf@plt>
  mov    %r12d,%edx
  mov    %r13d,%esi
  mov    %r14,%rdi
  call   <printf@plt>
  mov    %r12d,%edx
  mov    %ebp,%esi
  mov    %r14,%rdi
  call   <printf@plt>
  mov    %ebp,%edx
  mov    %r13d,%esi
  mov    %r14,%rdi
  call   <printf@plt>
  mov    %r13d,%edx
  mov    %r12d,%esi
  mov    %r14,%rdi
  call   <printf@plt>
  mov    %ebp,%edx
  mov    %r12d,%esi
  mov    %r14,%rdi
  call   <printf@plt>
  mov    %ebp,%edx
  mov    %r13d,%esi
  mov    %r14,%rdi
  call   <printf@plt>
  mov    %r12d,%edx
  mov    %r13d,%esi
  mov    %r14,%rdi
  call   <printf@plt>
  mov    %r12d,%edx
  mov    %ebp,%esi
  mov    %r14,%rdi
  call   <printf@plt>
  mov    %r13d,%edx
  mov    %ebp,%esi
  mov    %r14,%rdi
  call   <printf@plt>
  mov    %r13d,%edx
  mov    %r12d,%esi
  mov    %r14,%rdi
  call   <printf@plt>
  mov    %r12d,%edx
  mov    %ebp,%esi
  mov    %r14,%rdi
  call   <printf@plt>
  mov    %ebp,%edx
  mov    %r13d,%esi
  jmp    L24
  cs nopw 0x0(%rax,%rax,1)
L78:
  mov    %ebp,%edx
  mov    %r12d,%esi
  mov    %r14,%rdi
  call   <printf@plt>
  mov    %r12d,%edx
  mov    %r13d,%esi
  mov    %r14,%rdi
  call   <printf@plt>
  mov    %r13d,%edx
  mov    %ebp,%esi
  mov    %r14,%rdi
  call   <printf@plt>
  mov    %r12d,%edx
  mov    %ebp,%esi
  mov    %r14,%rdi
  call   <printf@plt>
  mov    %r12d,%edx
  mov    %r13d,%esi
  mov    %r14,%rdi
  call   <printf@plt>
  mov    %ebp,%edx
  mov    %r13d,%esi
  mov    %r14,%rdi
  call   <printf@plt>
  mov    %ebp,%edx
  mov    %r12d,%esi
  mov    %r14,%rdi
  call   <printf@plt>
  mov    %r13d,%edx
  mov    %r12d,%esi
  mov    %r14,%rdi
  call   <printf@plt>
  mov    %r13d,%ecx
  mov    %r12d,%edx
  mov    %ebp,%esi
  mov    $0x1,%edi
  call   <t>
  mov    %ebp,%edx
  mov    %r12d,%esi
  mov    %r14,%rdi
  call   <printf@plt>
  mov    %r12d,%edx
  mov    %r13d,%esi
  mov    %r14,%rdi
  call   <printf@plt>
  mov    %ebp,%edx
  mov    %r13d,%esi
  mov    %r14,%rdi
  call   <printf@plt>
  mov    %ebp,%edx
  mov    %r12d,%esi
  mov    %r14,%rdi
  call   <printf@plt>
  mov    0xc(%rsp),%r8d
  jmp    L76
```

tool_calls: name: retrieve_data
arguments: label: D2
type: string

tool: D2: %c --> %c


assistant: ```c
void t(int n, char beg, char aux, char end) {
  if (n == 1) {
    printf("%c --> %c\n", beg, end);
  } else {
    t(n - 1, beg, end, aux);
    t(1, beg, aux, end);
    t(n - 1, aux, beg, end);
  }
}
```