user: 这段汇编代码用C语言表示是什么样的:

```asm
<parse_char_constant>:
  endbr64
  push   %rbp
  mov    %rsp,%rbp
  sub    $0x30,%rsp
  mov    %rdi,-0x28(%rbp)
  mov    %rsi,-0x30(%rbp)
  mov    -0x28(%rbp),%rax
  movzbl (%rax),%eax
  cmp    $0x5c,%al
  je     L98
  lea    D23(%rip),%rax
  mov    %rax,%rdx
  mov    $0x2b4,%esi
  lea    D0(%rip),%rax
  mov    %rax,%rdi
  call   <Fail@plt>
L98:
  mov    -0x30(%rbp),%rax
  movl   $0x2,(%rax)
  mov    -0x28(%rbp),%rax
  add    $0x1,%rax
  movzbl (%rax),%eax
  movsbl %al,%eax
  sub    $0x22,%eax
  cmp    $0x56,%eax
  ja     L4
  mov    %eax,%eax
  lea    0x0(,%rax,4),%rdx
  lea    D54(%rip),%rax
  mov    (%rdx,%rax,1),%eax
  cltq
  lea    D54(%rip),%rdx
  add    %rdx,%rax
  notrack jmp *%rax
  mov    $0xa,%eax
  jmp    L226
  mov    $0x9,%eax
  jmp    L226
  mov    $0xb,%eax
  jmp    L226
  mov    $0x8,%eax
  jmp    L226
  mov    $0xd,%eax
  jmp    L226
  mov    $0xc,%eax
  jmp    L226
  mov    $0x7,%eax
  jmp    L226
  mov    $0x5c,%eax
  jmp    L226
  mov    $0x3f,%eax
  jmp    L226
  mov    $0x27,%eax
  jmp    L226
  mov    $0x22,%eax
  jmp    L226
  movl   $0x0,-0x18(%rbp)
  movl   $0x2,-0x14(%rbp)
  jmp    L144
L75:
  mov    -0x18(%rbp),%eax
  shl    $0x4,%eax
  mov    %eax,%edx
  mov    -0x8(%rbp),%eax
  add    %edx,%eax
  mov    %eax,-0x18(%rbp)
  addl   $0x1,-0x14(%rbp)
L144:
  mov    -0x14(%rbp),%eax
  movslq %eax,%rdx
  mov    -0x28(%rbp),%rax
  add    %rdx,%rax
  movzbl (%rax),%eax
  movsbl %al,%eax
  mov    %eax,%edi
  call   <hex_digit@plt>
  mov    %eax,-0x8(%rbp)
  cmpl   $0x0,-0x8(%rbp)
  jns    L75
  mov    -0x30(%rbp),%rax
  mov    -0x14(%rbp),%edx
  mov    %edx,(%rax)
  cmpl   $0x2,-0x14(%rbp)
  jne    L23
  lea    D24(%rip),%rax
  mov    %rax,%rdi
  mov    $0x0,%eax
  call   <SyntaxError@plt>
  mov    $0xffffffff,%eax
  jmp    L226
L23:
  cmpl   $0x100,-0x18(%rbp)
  jle    L262
  lea    D56(%rip),%rax
  mov    %rax,%rdi
  mov    $0x0,%eax
  call   <SyntaxError@plt>
  mov    $0xffffffff,%eax
  jmp    L226
L262:
  mov    -0x18(%rbp),%eax
  jmp    L226
L4:
  mov    -0x28(%rbp),%rax
  add    $0x1,%rax
  movzbl (%rax),%eax
  movsbl %al,%eax
  mov    %eax,%edi
  call   <octal_digit@plt>
  test   %eax,%eax
  js     L165
  movl   $0x0,-0x10(%rbp)
  movl   $0x1,-0xc(%rbp)
  jmp    L172
L53:
  mov    -0x10(%rbp),%eax
  lea    0x0(,%rax,8),%edx
  mov    -0x4(%rbp),%eax
  add    %edx,%eax
  mov    %eax,-0x10(%rbp)
  addl   $0x1,-0xc(%rbp)
L172:
  mov    -0xc(%rbp),%eax
  movslq %eax,%rdx
  mov    -0x28(%rbp),%rax
  add    %rdx,%rax
  movzbl (%rax),%eax
  movsbl %al,%eax
  mov    %eax,%edi
  call   <octal_digit@plt>
  mov    %eax,-0x4(%rbp)
  cmpl   $0x0,-0x4(%rbp)
  js     L65
  cmpl   $0x3,-0xc(%rbp)
  jle    L53
L65:
  cmpl   $0x100,-0x10(%rbp)
  jle    L233
  lea    D78(%rip),%rax
  mov    %rax,%rdi
  mov    $0x0,%eax
  call   <SyntaxError@plt>
  mov    $0xffffffff,%eax
  jmp    L226
L233:
  mov    -0x30(%rbp),%rax
  mov    -0xc(%rbp),%edx
  mov    %edx,(%rax)
  mov    -0x10(%rbp),%eax
  jmp    L226
L165:
  mov    -0x28(%rbp),%rax
  add    $0x1,%rax
  movzbl (%rax),%eax
  movsbl %al,%eax
  mov    %eax,%esi
  lea    D55(%rip),%rax
  mov    %rax,%rdi
  mov    $0x0,%eax
  call   <SyntaxError@plt>
  mov    $0xffffffff,%eax
L226:
  leave
  ret
```

tool_calls: name: unpack_data
arguments: data_tag: D23
datatype: string
name: unpack_data
arguments: data_tag: D0
datatype: string
name: unpack_data
arguments: data_tag: D24
datatype: string
name: unpack_data
arguments: data_tag: D56
datatype: string
name: unpack_data
arguments: data_tag: D78
datatype: string
name: unpack_data
arguments: data_tag: D55
datatype: string

tool: D23: s[0] == '\\'

tool: D0: c4.l

tool: D24: expecting hex digits after \x

tool: D56: explicit hex character (\x) out of range

tool: D78: explicit octal character out of range

tool: D55: unknown special character "\%c"

assistant: ```c
int parse_char_constant(const char *s, int *actual_read) {
  ((s[0] == '\\') ? (void)0 : (void)Fail("c4.l", 692, "s[0] == '\\\\'"));
  *actual_read = 2;
  switch (s[1]) {
  case 'n':
    return '\n';
  case 't':
    return '\t';
  case 'v':
    return '\v';
  case 'b':
    return '\b';
  case 'r':
    return '\r';
  case 'f':
    return '\f';
  case 'a':
    return '\a';
  case '\\':
    return '\\';
  case '?':
    return '\?';
  case '\'':
    return '\'';
  case '\"':
    return '\"';
  case 'x': {
    int val = 0, tmp, i;
    for (i = 2; (tmp = hex_digit(s[i])) >= 0; i++) {
      val = 16 * val + tmp;
    }
    *actual_read = i;
    if (i == 2) {
      SyntaxError("expecting hex digits after \\x");
      return (-1);
    }
    if (val > 256) {
      SyntaxError("explicit hex character (\\x) out of range");
      return (-1);
    }
    return (val);
  }
  default:
    if (octal_digit(s[1]) >= 0) {
      int val = 0, tmp, i;
      for (i = 1; (tmp = octal_digit(s[i])) >= 0 && i < 4; i++) {
        val = 8 * val + tmp;
      }
      if (val > 256) {
        SyntaxError("explicit octal character out of range");
        return (-1);
      }
      *actual_read = i;
      return (val);
    } else {
      SyntaxError("unknown special character \"\\%c\"", s[1]);
      return (-1);
    }
  }
}
```