user: 提供的汇编代码用C语言表示会是什么样子:

```asm
<url_encode>:
  endbr64
  push   %rbp
  mov    %rsp,%rbp
  sub    $0x830,%rsp
  mov    %rdi,-0x828(%rbp)
  mov    %esi,-0x82c(%rbp)
  mov    %fs:0x28,%rax
  mov    %rax,-0x8(%rbp)
  xor    %eax,%eax
  mov    -0x828(%rbp),%rax
  mov    %rax,-0x820(%rbp)
  movq   $0x0,-0x810(%rbp)
  movq   $0x0,-0x808(%rbp)
  lea    -0x800(%rbp),%rdx
  mov    $0x0,%eax
  mov    $0xfe,%ecx
  mov    %rdx,%rdi
  rep stos %rax,%es:(%rdi)
  lea    -0x810(%rbp),%rax
  mov    %rax,-0x818(%rbp)
  mov    -0x828(%rbp),%rax
  mov    %rax,%rsi
  lea    D21(%rip),%rax
  mov    %rax,%rdi
  mov    $0x0,%eax
  call   <printf@plt>
  jmp    L4
L7:
  mov    -0x820(%rbp),%rax
  movzbl (%rax),%eax
  movzbl %al,%eax
  mov    %eax,%edi
  call   <isalnum@plt>
  test   %rax,%rax
  jne    L41
  mov    -0x820(%rbp),%rax
  movzbl (%rax),%eax
  movzbl %al,%eax
  mov    %eax,%esi
  lea    D3(%rip),%rax
  mov    %rax,%rdi
  call   <strchr@plt>
  test   %rax,%rax
  jne    L41
  cmpl   $0x0,-0x82c(%rbp)
  je     L69
  mov    -0x820(%rbp),%rax
  movzbl (%rax),%eax
  movzbl %al,%eax
  mov    %eax,%esi
  lea    D17(%rip),%rax
  mov    %rax,%rdi
  call   <strchr@plt>
  test   %rax,%rax
  je     L69
L41:
  mov    -0x818(%rbp),%rax
  lea    0x1(%rax),%rdx
  mov    %rdx,-0x818(%rbp)
  mov    -0x820(%rbp),%rdx
  movzbl (%rdx),%edx
  mov    %dl,(%rax)
  jmp    L43
L69:
  mov    -0x820(%rbp),%rax
  movzbl (%rax),%eax
  cmp    $0x20,%al
  jne    L8
  mov    -0x818(%rbp),%rax
  lea    0x1(%rax),%rdx
  mov    %rdx,-0x818(%rbp)
  movb   $0x2b,(%rax)
  jmp    L43
L8:
  mov    -0x818(%rbp),%rax
  lea    0x1(%rax),%rdx
  mov    %rdx,-0x818(%rbp)
  movb   $0x25,(%rax)
  mov    -0x820(%rbp),%rax
  movzbl (%rax),%eax
  shr    $0x4,%al
  movzbl %al,%eax
  mov    %eax,%edi
  call   <to_hex@plt>
  mov    %rax,%rcx
  mov    -0x818(%rbp),%rax
  lea    0x1(%rax),%rdx
  mov    %rdx,-0x818(%rbp)
  mov    %ecx,%edx
  mov    %dl,(%rax)
  mov    -0x820(%rbp),%rax
  movzbl (%rax),%eax
  movzbl %al,%eax
  and    $0xf,%eax
  mov    %eax,%edi
  call   <to_hex@plt>
  mov    %rax,%rcx
  mov    -0x818(%rbp),%rax
  lea    0x1(%rax),%rdx
  mov    %rdx,-0x818(%rbp)
  mov    %ecx,%edx
  mov    %dl,(%rax)
L43:
  addq   $0x1,-0x820(%rbp)
L4:
  mov    -0x820(%rbp),%rax
  movzbl (%rax),%eax
  test   %al,%al
  je     L53
  lea    -0x810(%rbp),%rdx
  mov    -0x818(%rbp),%rax
  sub    %rdx,%rax
  cmp    $0x7fb,%rax
  jle    L7
L53:
  mov    -0x818(%rbp),%rax
  movb   $0x0,(%rax)
  lea    -0x810(%rbp),%rax
  mov    %rax,%rsi
  lea    D32(%rip),%rax
  mov    %rax,%rdi
  mov    $0x0,%eax
  call   <printf@plt>
  lea    -0x810(%rbp),%rdx
  mov    -0x828(%rbp),%rax
  mov    %rdx,%rcx
  lea    D43(%rip),%rdx
  mov    $0x800,%esi
  mov    %rax,%rdi
  call   <snprintf@plt>
  mov    $0x0,%eax
  mov    -0x8(%rbp),%rdx
  sub    %fs:0x28,%rdx
  je     L47
  call   <__stack_chk_fail@plt>
L47:
  leave
  ret
```

tool_calls: name: extract_symbolic_data
arguments: tag: D21
type_guessed: string
name: extract_symbolic_data
arguments: tag: D3
type_guessed: string
name: extract_symbolic_data
arguments: tag: D17
type_guessed: string
name: extract_symbolic_data
arguments: tag: D32
type_guessed: string
name: extract_symbolic_data
arguments: tag: D43
type_guessed: string

tool: D21: orignal str:%s


tool: D3: _-.~

tool: D17: %?&=/:

tool: D32: encode: %s


tool: D43: %s

assistant: ```c
int url_encode(char *str, int ext) {
  unsigned char *pstr = (unsigned char *)str;
  unsigned char buf[2048] = {0};
  unsigned char *pbuf = buf;
  printf("orignal str:%s\n", str);
  while (*pstr && (pbuf - buf + 4) < 2048) {
    if (isalnum(*pstr) || NULL != strchr("_-.~", *pstr) || (ext && NULL != strchr("%?&=/:", *pstr))) {
      *pbuf++ = *pstr;
    } else if (*pstr == ' ') {
      *pbuf++ = '+';
    } else {
      *pbuf++ = '%';
      *pbuf++ = to_hex(*pstr >> 4);
      *pbuf++ = to_hex(*pstr & 15);
    }
    pstr++;
  }
  *pbuf = '\0';
  printf("encode: %s\n", buf);
  snprintf(str, 2048, "%s", buf);
  return 0;
}
```