user: 这段汇编代码用C语言表示是什么样的:

```asm
<urlencode>:
  endbr64
  push   %rbp
  mov    %rsp,%rbp
  sub    $0x30,%rsp
  mov    %rdi,-0x28(%rbp)
  movl   $0x0,-0xc(%rbp)
  movl   $0x0,-0x10(%rbp)
  jmp    L82
L18:
  movsbl -0x11(%rbp),%eax
  mov    %eax,%edi
  call   <isurlsafe@plt>
  test   %rax,%rax
  je     L38
  addl   $0x1,-0xc(%rbp)
  jmp    L25
L38:
  addl   $0x3,-0xc(%rbp)
L25:
  addl   $0x1,-0x10(%rbp)
L82:
  mov    -0x10(%rbp),%eax
  movslq %eax,%rdx
  mov    -0x28(%rbp),%rax
  add    %rdx,%rax
  movzbl (%rax),%eax
  mov    %al,-0x11(%rbp)
  cmpb   $0x0,-0x11(%rbp)
  jne    L18
  mov    -0xc(%rbp),%eax
  add    $0x1,%eax
  mov    %eax,%edi
  call   <malloc@plt>
  mov    %rax,-0x8(%rbp)
  cmpq   $0x0,-0x8(%rbp)
  jne    L54
  mov    $0x0,%eax
  jmp    L31
L54:
  movl   $0x0,-0x10(%rbp)
  jmp    L41
L66:
  movsbl -0x11(%rbp),%eax
  mov    %eax,%edi
  call   <isurlsafe@plt>
  test   %rax,%rax
  je     L93
  mov    -0x10(%rbp),%eax
  lea    0x1(%rax),%edx
  mov    %edx,-0x10(%rbp)
  movslq %eax,%rdx
  mov    -0x8(%rbp),%rax
  add    %rax,%rdx
  movzbl -0x11(%rbp),%eax
  mov    %al,(%rdx)
  jmp    L41
L93:
  mov    -0x10(%rbp),%eax
  lea    0x1(%rax),%edx
  mov    %edx,-0x10(%rbp)
  movslq %eax,%rdx
  mov    -0x8(%rbp),%rax
  add    %rdx,%rax
  movb   $0x25,(%rax)
  movzbl -0x11(%rbp),%eax
  lea    0xf(%rax),%edx
  test   %al,%al
  cmovs  %edx,%eax
  sar    $0x4,%al
  mov    %eax,%edx
  mov    %edx,%eax
  sar    $0x7,%al
  shr    $0x4,%al
  mov    %eax,%ecx
  lea    (%rdx,%rcx,1),%eax
  and    $0xf,%eax
  sub    %ecx,%eax
  movsbl %al,%ecx
  mov    -0x10(%rbp),%eax
  lea    0x1(%rax),%edx
  mov    %edx,-0x10(%rbp)
  movslq %eax,%rdx
  mov    -0x8(%rbp),%rax
  add    %rax,%rdx
  movslq %ecx,%rax
  lea    D15(%rip),%rcx
  movzbl (%rax,%rcx,1),%eax
  mov    %al,(%rdx)
  movzbl -0x11(%rbp),%eax
  mov    %eax,%edx
  sar    $0x7,%dl
  shr    $0x4,%dl
  add    %edx,%eax
  and    $0xf,%eax
  sub    %edx,%eax
  movsbl %al,%ecx
  mov    -0x10(%rbp),%eax
  lea    0x1(%rax),%edx
  mov    %edx,-0x10(%rbp)
  movslq %eax,%rdx
  mov    -0x8(%rbp),%rax
  add    %rax,%rdx
  movslq %ecx,%rax
  lea    D15(%rip),%rcx
  movzbl (%rax,%rcx,1),%eax
  mov    %al,(%rdx)
L41:
  mov    -0x28(%rbp),%rax
  lea    0x1(%rax),%rdx
  mov    %rdx,-0x28(%rbp)
  movzbl (%rax),%eax
  mov    %al,-0x11(%rbp)
  cmpb   $0x0,-0x11(%rbp)
  jne    L66
  mov    -0x10(%rbp),%eax
  movslq %eax,%rdx
  mov    -0x8(%rbp),%rax
  add    %rdx,%rax
  movb   $0x0,(%rax)
  mov    -0x8(%rbp),%rax
L31:
  leave
  ret
```

tool_calls: name: extract_symbolic_data
arguments: data_label: D15
data_type: string

tool: D15: 0123456789abcdef

assistant: ```c
char *urlencode(const char *str) {
  static const char hextable[] = "0123456789abcdef";
  char *encoded_url, ch;
  int i, len = 0;
  for (i = 0; (ch = str[i]); i++) {
    if (isurlsafe(ch)) {
      len++;
    } else {
      len += 3;
    }
  }
  if ((encoded_url = malloc(len + 1)) == NULL) {
    return NULL;
  }
  i = 0;
  while ((ch = *str++)) {
    if (isurlsafe(ch)) {
      encoded_url[i++] = ch;
    } else {
      encoded_url[i++] = '%';
      encoded_url[i++] = hextable[((ch / 16) % 16)];
      encoded_url[i++] = hextable[ch % 16];
    }
  }
  encoded_url[i] = 0x0;
  return encoded_url;
}
```