user: 这段汇编代码用C语言表示是什么样的？

```asm
<tlsext_cb>:
  endbr64
  mov    %edx,%eax
  add    $0xffffff80,%edx
  push   %r13
  mov    %rcx,%r13
  push   %r12
  mov    %r8d,%r12d
  push   %rbp
  mov    %r9,%rbp
  cmp    $0x9,%edx
  ja     L52
  lea    D138(%rip),%rcx
  movslq (%rcx,%rdx,4),%rdx
  add    %rcx,%rdx
  notrack jmp *%rdx
  nopl   0x0(%rax)
  lea    D144(%rip),%rcx
L105:
  test   %esi,%esi
  lea    D88(%rip),%rdx
  mov    %r12d,%r9d
  mov    %rbp,%rdi
  lea    D134(%rip),%rsi
  mov    %eax,%r8d
  cmove  %rsi,%rdx
  lea    D97(%rip),%rsi
  call   <BIO_printf@plt>
  mov    %rbp,%rdi
  mov    %r12d,%edx
  mov    %r13,%rsi
  call   <BIO_dump@plt>
  mov    %rbp,%rdi
  pop    %rbp
  pop    %r12
  pop    %r13
  jmp    1090 <BIO_flush@plt>
  nopl   0x0(%rax,%rax,1)
  lea    D57(%rip),%rcx
  jmp    L105
  nopl   0x0(%rax)
  lea    D90(%rip),%rcx
  jmp    L105
  nopl   0x0(%rax)
  lea    D113(%rip),%rcx
  jmp    L105
  nopl   0x0(%rax)
  lea    D136(%rip),%rcx
  jmp    L105
  nopl   0x0(%rax)
  lea    D94(%rip),%rcx
  jmp    L105
  nopl   0x0(%rax)
  lea    D62(%rip),%rcx
  jmp    L105
  nopl   0x0(%rax)
  lea    D2(%rip),%rcx
  jmp    L105
  nopl   0x0(%rax)
  lea    D87(%rip),%rcx
  jmp    L105
  nopl   0x0(%rax)
  lea    D75(%rip),%rcx
  jmp    L105
L52:
  lea    D98(%rip),%rcx
  jmp    L105
```

tool_calls: name: unpack_data
arguments: tag: D144
type: string
name: unpack_data
arguments: tag: D88
type: string
name: unpack_data
arguments: tag: D134
type: string
name: unpack_data
arguments: tag: D97
type: string
name: unpack_data
arguments: tag: D57
type: string
name: unpack_data
arguments: tag: D90
type: string
name: unpack_data
arguments: tag: D113
type: string
name: unpack_data
arguments: tag: D136
type: string
name: unpack_data
arguments: tag: D94
type: string
name: unpack_data
arguments: tag: D62
type: string
name: unpack_data
arguments: tag: D2
type: string
name: unpack_data
arguments: tag: D87
type: string
name: unpack_data
arguments: tag: D75
type: string
name: unpack_data
arguments: tag: D98
type: string

tool: D144: max fragment length

tool: D88: server

tool: D134: client

tool: D97: TLS %s extension "%s" (id=%d), len=%d


tool: D57: server name

tool: D90: renegotiate

tool: D113: elliptic curves

tool: D136: status request

tool: D94: server ticket

tool: D62: EC point formats

tool: D2: client certificate URL

tool: D87: trusted CA keys

tool: D75: truncated HMAC

tool: D98: unknown

assistant: ```c
void tlsext_cb(SSL *s, int client_server, int type, unsigned char *data, int len, void *arg) {
  BIO *bio = arg;
  char *extname;
  switch (type) {
  case TLSEXT_TYPE_server_name:
    extname = "server name";
    break;
  case TLSEXT_TYPE_max_fragment_length:
    extname = "max fragment length";
    break;
  case TLSEXT_TYPE_client_certificate_url:
    extname = "client certificate URL";
    break;
  case TLSEXT_TYPE_trusted_ca_keys:
    extname = "trusted CA keys";
    break;
  case TLSEXT_TYPE_truncated_hmac:
    extname = "truncated HMAC";
    break;
  case TLSEXT_TYPE_status_request:
    extname = "status request";
    break;
  case TLSEXT_TYPE_elliptic_curves:
    extname = "elliptic curves";
    break;
  case TLSEXT_TYPE_ec_point_formats:
    extname = "EC point formats";
    break;
  case TLSEXT_TYPE_session_ticket:
    extname = "server ticket";
    break;
  case TLSEXT_TYPE_renegotiate:
    extname = "renegotiate";
    break;
  default:
    extname = "unknown";
    break;
  }
  BIO_printf(bio, "TLS %s extension \"%s\" (id=%d), len=%d\n", client_server ? "server" : "client", extname, type, len);
  BIO_dump(bio, (char *)data, len);
  (void)BIO_flush(bio);
}
```