user: 提供的汇编代码用C语言表示会是什么样子：

```asm
<string_get_col>:
  endbr64
  push   %r14
  push   %r13
  push   %r12
  push   %rbp
  push   %rbx
  mov    %rdi,%r14
  mov    %rsi,%rdi
  mov    %edx,%r13d
  mov    %rcx,%rbp
  call   <string_get@plt>
  mov    %rax,%rbx
  mov    $0x0,%r12d
  jmp    L257
L340:
  add    $0x1,%rbx
  jmp    L257
L84:
  movzbl (%rbx),%eax
  test   %al,%al
  je     L254
  cmp    %r13d,%r12d
  je     L304
  cmp    $0x22,%al
  jne    L193
L17:
  mov    %rbx,%rdx
  add    $0x1,%rbx
  movzbl (%rbx),%eax
  test   %al,%al
  je     L256
  cmp    $0x22,%al
  jne    L17
L256:
  test   %al,%al
  je     L210
  lea    0x2(%rdx),%rbx
  jmp    L337
L89:
  add    $0x1,%rbx
L193:
  movsbl (%rbx),%edi
  mov    %rbp,%rsi
  call   <check_char_class@plt>
  test   %rax,%rax
  jne    L107
  cmpb   $0x0,(%rbx)
  jne    L89
  mov    $0xffffffff,%eax
  jmp    L138
L107:
  cmpb   $0x0,(%rbx)
  je     L243
L337:
  add    $0x1,%r12d
L257:
  movsbl (%rbx),%edi
  mov    %rbp,%rsi
  call   <check_char_class@plt>
  test   %rax,%rax
  je     L84
  cmpb   $0x0,(%rbx)
  jne    L340
  mov    $0xffffffff,%eax
L138:
  pop    %rbx
  pop    %rbp
  pop    %r12
  pop    %r13
  pop    %r14
  ret
L304:
  lea    D8(%rip),%rsi
  mov    %r14,%rdi
  call   <string_set@plt>
  movzbl (%rbx),%edi
  cmp    $0x22,%dil
  je     L327
  mov    $0x0,%eax
  test   %dil,%dil
  je     L138
L73:
  movsbl %dil,%edi
  mov    %rbp,%rsi
  call   <check_char_class@plt>
  test   %rax,%rax
  jne    L199
  add    $0x1,%rbx
  movsbl -0x1(%rbx),%esi
  mov    %r14,%rdi
  call   <string_append_char@plt>
  movzbl (%rbx),%edi
  test   %dil,%dil
  jne    L73
  mov    $0x0,%eax
  jmp    L138
L327:
  movzbl 0x1(%rbx),%eax
  cmp    $0x22,%al
  je     L303
  test   %al,%al
  je     L303
  lea    0x1(%rbx),%rbp
L224:
  mov    %rbx,%rdx
  add    $0x1,%rbx
  movzbl (%rbx),%eax
  test   %al,%al
  je     L234
  cmp    $0x22,%al
  jne    L224
L234:
  test   %al,%al
  je     L348
  cmp    %rbp,%rdx
  jb     L169
  lea    0x1(%rdx),%rbx
L163:
  add    $0x1,%rbp
  movsbl -0x1(%rbp),%esi
  mov    %r14,%rdi
  call   <string_append_char@plt>
  cmp    %rbx,%rbp
  jne    L163
  mov    $0x0,%eax
  jmp    L138
L199:
  mov    $0x0,%eax
  jmp    L138
L254:
  mov    $0xffffffff,%eax
  jmp    L138
L210:
  mov    $0xffffffff,%eax
  jmp    L138
L243:
  mov    $0xffffffff,%eax
  jmp    L138
L303:
  mov    $0xffffffff,%eax
  jmp    L138
L348:
  mov    $0xffffffff,%eax
  jmp    L138
L169:
  mov    $0x0,%eax
  jmp    L138
```

tool_calls: name: extract_symbolic_data
arguments: label: D8
datatype: string

tool: 

assistant: ```c
int string_get_col(struct string *dst, struct string const *src, unsigned col_no, char const *delim) {
  unsigned cur_col = 0;
  char const *strp = string_get(src);
  for (;;) {
    while (check_char_class(*strp, delim) && *strp)
      strp++;
    if (!*strp)
      return -1;
    if (cur_col == col_no)
      break;
    if (*strp == '"') {
      do {
        strp++;
      } while (*strp && *strp != '"');
      if (!*strp)
        return -1;
      strp++;
    } else {
      while (!check_char_class(*strp, delim) && *strp)
        strp++;
      if (!*strp)
        return -1;
    }
    cur_col++;
  }
  string_set(dst, "");
  if (*strp == '"') {
    if (strp[1] == '"' || !strp[1])
      return -1;
    char const *last;
    char const *first = strp + 1;
    do {
      last = strp;
      strp++;
    } while (*strp && *strp != '"');
    if (!*strp)
      return -1;
    while (first <= last)
      string_append_char(dst, *first++);
  } else {
    while (*strp && !check_char_class(*strp, delim))
      string_append_char(dst, *strp++);
  }
  return 0;
}
```