user: 这段汇编代码用C语言表示是什么样的:

```asm
<_prtl16>:
  endbr64
  push   %rbx
  mov    %rsi,%rcx
  mov    %rdi,%rsi
  mov    %rdi,%rax
  and    $0xf,%esi
  sub    $0x20,%rsp
  mov    %fs:0x28,%rdx
  mov    %rdx,0x18(%rsp)
  xor    %edx,%edx
  lea    D0(%rip),%rdx
  movb   $0x0,0xf(%rsp)
  movzbl (%rdx,%rsi,1),%r9d
  mov    %rdi,%rsi
  sar    $0x4,%rsi
  and    $0xf,%esi
  mov    %r9b,0x10(%rsp)
  movzbl (%rdx,%rsi,1),%r8d
  mov    %rdi,%rsi
  sar    $0x8,%rsi
  and    $0xf,%esi
  mov    %r8b,0x11(%rsp)
  movzbl (%rdx,%rsi,1),%edi
  mov    %rax,%rsi
  sar    $0xc,%rsi
  and    $0xf,%esi
  mov    %dil,0x12(%rsp)
  movzbl (%rdx,%rsi,1),%r10d
  mov    %rax,%rsi
  sar    $0x10,%rsi
  and    $0xf,%esi
  mov    %r10b,0x13(%rsp)
  movzbl (%rdx,%rsi,1),%r11d
  mov    %rax,%rsi
  sar    $0x14,%rsi
  and    $0xf,%esi
  mov    %r11b,0x14(%rsp)
  movzbl (%rdx,%rsi,1),%ebx
  mov    %rax,%rsi
  sar    $0x1c,%rax
  sar    $0x18,%rsi
  and    $0xf,%eax
  and    $0xf,%esi
  movzbl (%rdx,%rax,1),%eax
  mov    %bl,0x15(%rsp)
  movzbl (%rdx,%rsi,1),%esi
  mov    %al,0x17(%rsp)
  mov    %sil,0x16(%rsp)
  cmp    $0x30,%al
  jne    L131
  cmp    $0x30,%sil
  jne    L174
  cmp    $0x30,%bl
  jne    L9
  cmp    $0x30,%r11b
  jne    L87
  cmp    $0x30,%r10b
  jne    L51
  cmp    $0x30,%dil
  jne    L143
  cmp    $0x30,%r8b
  jne    L132
  movzwl 0xf(%rsp),%eax
  rol    $0x8,%ax
  mov    %ax,(%rcx)
  nopl   0x0(%rax)
L105:
  mov    0x18(%rsp),%rax
  sub    %fs:0x28,%rax
  jne    L198
  add    $0x20,%rsp
  xor    %eax,%eax
  pop    %rbx
  ret
L143:
  mov    $0x3,%eax
  nopl   0x0(%rax)
L109:
  movslq %eax,%rdx
  lea    -0x3(%rax),%esi
  movzbl 0xf(%rsp,%rdx,1),%edx
  mov    %dl,(%rcx)
  lea    -0x1(%rax),%edx
  movslq %edx,%rdx
  movzbl 0xf(%rsp,%rdx,1),%edx
  mov    %dl,0x1(%rcx)
  lea    -0x2(%rax),%edx
  movslq %edx,%rdx
  movzbl 0xf(%rsp,%rdx,1),%edx
  mov    %dl,0x2(%rcx)
  cmp    $0x2,%eax
  je     L105
  movslq %esi,%rsi
  lea    -0x4(%rax),%edx
  movzbl 0xf(%rsp,%rsi,1),%esi
  mov    %sil,0x3(%rcx)
  cmp    $0x3,%eax
  je     L105
  movslq %edx,%rdx
  lea    -0x5(%rax),%esi
  movzbl 0xf(%rsp,%rdx,1),%edx
  mov    %dl,0x4(%rcx)
  cmp    $0x4,%eax
  je     L105
  movslq %esi,%rsi
  lea    -0x6(%rax),%edx
  movzbl 0xf(%rsp,%rsi,1),%esi
  mov    %sil,0x5(%rcx)
  cmp    $0x5,%eax
  je     L105
  movslq %edx,%rdx
  lea    -0x7(%rax),%esi
  movzbl 0xf(%rsp,%rdx,1),%edx
  mov    %dl,0x6(%rcx)
  cmp    $0x6,%eax
  je     L105
  movslq %esi,%rax
  movzbl 0xf(%rsp,%rax,1),%eax
  mov    %al,0x7(%rcx)
  test   %esi,%esi
  je     L105
  movb   $0x0,0x8(%rcx)
  jmp    L105
  nopl   0x0(%rax,%rax,1)
L131:
  mov    $0x8,%eax
  jmp    L109
  nopw   0x0(%rax,%rax,1)
L174:
  mov    $0x7,%eax
  jmp    L109
L9:
  mov    $0x6,%eax
  jmp    L109
L87:
  mov    $0x5,%eax
  jmp    L109
L51:
  mov    $0x4,%eax
  jmp    L109
L132:
  mov    $0x2,%eax
  jmp    L109
L198:
  call   <__stack_chk_fail@plt>
```

tool_calls: name: extract_symbolic_data
arguments: data_tag: D0
type: string

tool: D0: 0123456789abcdef

assistant: ```c
_prtl16(num, str) long num;
char *str;
{
  int i;
  char c, temp[9];
  temp[0] = '\0';
  for (i = 1; i <= 8; i++) {
    temp[i] = "0123456789abcdef"[num & 0x0f];
    num = num >> 4;
  }
  for (i = 8; temp[i] == '0'; i--)
    ;
  if (i == 0)
    i++;
  while (i >= 0)
    *str++ = temp[i--];
}
```