user: 请从给定的汇编指令推导出C源代码：

```asm
<to_dec>:
  endbr64
  push   %rbp
  push   %rbx
  sub    $0x818,%rsp
  mov    %rdi,%rbp
  mov    %rsi,%rbx
  mov    %fs:0x28,%rax
  mov    %rax,0x808(%rsp)
  xor    %eax,%eax
  call   <init_roman@plt>
  mov    %rbp,%rdi
  call   <strlen@plt>
  test   %eax,%eax
  jle    L174
  mov    %rbp,%rdx
  lea    -0x1(%rax),%eax
  lea    0x1(%rbp,%rax,1),%r9
  mov    $0x0,%ecx
  lea    D8(%rip),%r8
  jmp    L312
  movslq %ecx,%rax
  movb   $0x1,(%rsp,%rax,1)
  add    $0x1,%ecx
L240:
  add    $0x1,%rdx
  cmp    %rdx,%r9
  je     L183
L312:
  mov    %rdx,%rsi
  movzbl (%rdx),%eax
  lea    -0x61(%rax),%edi
  cmp    $0x19,%dil
  ja     L414
  sub    $0x20,%eax
  mov    %al,(%rdx)
L414:
  movzbl (%rsi),%eax
  sub    $0x43,%eax
  cmp    $0x1b,%al
  ja     L300
  movzbl %al,%eax
  movslq (%r8,%rax,4),%rax
  add    %r8,%rax
  notrack jmp *%rax
  movslq %ecx,%rax
  movb   $0x2,(%rsp,%rax,1)
  add    $0x1,%ecx
  jmp    L240
  movslq %ecx,%rax
  movb   $0x3,(%rsp,%rax,1)
  add    $0x1,%ecx
  jmp    L240
  movslq %ecx,%rax
  movb   $0x4,(%rsp,%rax,1)
  add    $0x1,%ecx
  jmp    L240
  movslq %ecx,%rax
  movb   $0x5,(%rsp,%rax,1)
  add    $0x1,%ecx
  jmp    L240
  movslq %ecx,%rax
  movb   $0x6,(%rsp,%rax,1)
  add    $0x1,%ecx
  jmp    L240
  movslq %ecx,%rax
  movb   $0x7,(%rsp,%rax,1)
  add    $0x1,%ecx
  jmp    L240
  lea    -0x1(%rcx),%eax
  cltq
  addb   $0x6,(%rsp,%rax,1)
  jmp    L240
L300:
  lea    D3(%rip),%rsi
  mov    %rbx,%rdi
  call   <strcpy@plt>
L325:
  mov    0x808(%rsp),%rax
  sub    %fs:0x28,%rax
  jne    L355
  add    $0x818,%rsp
  pop    %rbx
  pop    %rbp
  ret
L183:
  movslq %ecx,%rax
  movb   $0x0,(%rsp,%rax,1)
  movzbl (%rsp),%eax
  mov    %al,0x400(%rsp)
  cmp    $0x1,%ecx
  jle    L388
  mov    %rsp,%rdx
  mov    $0x2,%r8d
  mov    $0x1,%esi
  jmp    L436
L435:
  test   $0x1,%dil
  jne    L268
  lea    -0x1(%rsi),%eax
  cltq
  mov    %r10b,0x400(%rsp,%rax,1)
  movslq %esi,%rax
  mov    %r10b,0x400(%rsp,%rax,1)
  lea    0x1(%rsi),%eax
  cltq
  mov    %r10b,0x400(%rsp,%rax,1)
  lea    0x2(%rsi),%eax
  cltq
  mov    %r10b,0x400(%rsp,%rax,1)
  add    $0x3,%esi
  mov    %r8d,%eax
  jmp    L115
L125:
  movslq %esi,%rax
  mov    %dil,0x400(%rsp,%rax,1)
  mov    %r8d,%eax
  add    $0x1,%esi
L115:
  add    $0x1,%rdx
  add    $0x1,%r8d
  cmp    %ecx,%eax
  jge    L30
L436:
  movzbl 0x1(%rdx),%edi
  movsbl %dil,%r9d
  movzbl (%rdx),%r10d
  movsbl %r10b,%eax
  lea    0x1(%rax),%r11d
  cmp    %r11d,%r9d
  je     L435
L268:
  add    $0x2,%eax
  cmp    %eax,%r9d
  jne    L125
  mov    %edi,%r9d
  shr    $0x7,%r9b
  lea    (%rdi,%r9,1),%eax
  and    $0x1,%eax
  sub    %r9d,%eax
  cmp    $0x1,%al
  jne    L125
  lea    -0x1(%rsi),%eax
  cltq
  sub    $0x1,%edi
  mov    %dil,0x400(%rsp,%rax,1)
  movslq %esi,%rax
  mov    %r10b,0x400(%rsp,%rax,1)
  lea    0x1(%rsi),%eax
  cltq
  mov    %r10b,0x400(%rsp,%rax,1)
  lea    0x2(%rsi),%eax
  cltq
  mov    %r10b,0x400(%rsp,%rax,1)
  lea    0x3(%rsi),%eax
  cltq
  mov    %r10b,0x400(%rsp,%rax,1)
  add    $0x4,%esi
  mov    %r8d,%eax
  jmp    L115
L30:
  movslq %esi,%rax
  movb   $0x0,0x400(%rsp,%rax,1)
  cmp    $0x1,%esi
  jle    L8
  lea    0x400(%rsp),%rdx
  lea    -0x2(%rsi),%eax
  lea    0x401(%rsp,%rax,1),%r8
  mov    $0x0,%ecx
  jmp    L152
L79:
  lea    D3(%rip),%rsi
  mov    %rbx,%rdi
  call   <strcpy@plt>
  jmp    L325
L170:
  mov    $0x0,%ecx
L352:
  add    $0x1,%rdx
  cmp    %r8,%rdx
  je     L133
L152:
  movsbl 0x1(%rdx),%eax
  movsbl (%rdx),%edi
  sub    %edi,%eax
  test   %eax,%eax
  jg     L79
  js     L170
  add    $0x1,%ecx
  cmp    $0x3,%ecx
  jle    L352
  lea    D3(%rip),%rsi
  mov    %rbx,%rdi
  call   <strcpy@plt>
  jmp    L325
L8:
  movsbl 0x400(%rsp),%eax
  sub    $0x1,%eax
  mov    $0x2,%ecx
  cltd
  idiv   %ecx
  lea    0x1(%rax),%r8d
  test   %r8d,%r8d
  jg     L120
  jmp    L6
L327:
  movslq %edx,%rax
  addb   $0x5,(%rbx,%rax,1)
L88:
  movslq %edx,%rdx
  cmpb   $0x39,(%rbx,%rdx,1)
  jg     L42
  add    $0x1,%rcx
  cmp    %ecx,%esi
  jle    L325
L405:
  movzbl 0x400(%rsp,%rcx,1),%edi
  movsbl %dil,%edx
  add    $0x1,%edx
  mov    %edx,%eax
  shr    $0x1f,%eax
  add    %edx,%eax
  sar    %eax
  mov    %r8d,%edx
  sub    %eax,%edx
  test   $0x1,%dil
  je     L327
  movslq %edx,%rax
  addb   $0x1,(%rbx,%rax,1)
  jmp    L88
L42:
  lea    D3(%rip),%rsi
  mov    %rbx,%rdi
  call   <strcpy@plt>
  jmp    L325
L353:
  movslq %r8d,%rax
  movb   $0x0,(%rbx,%rax,1)
  jmp    L341
L133:
  movsbl 0x400(%rsp),%eax
  sub    $0x1,%eax
  mov    %eax,%r8d
  shr    $0x1f,%r8d
  add    %eax,%r8d
  sar    %r8d
  add    $0x1,%r8d
  test   %r8d,%r8d
  jle    L353
L120:
  mov    $0x0,%eax
L123:
  movb   $0x30,(%rbx,%rax,1)
  add    $0x1,%rax
  cmp    %eax,%r8d
  jg     L123
L6:
  movslq %r8d,%rax
  movb   $0x0,(%rbx,%rax,1)
  test   %esi,%esi
  jle    L325
L341:
  mov    $0x0,%ecx
  jmp    L405
L174:
  movb   $0x0,(%rsp)
  movb   $0x0,0x400(%rsp)
L388:
  movb   $0x0,0x401(%rsp)
  movsbl 0x400(%rsp),%eax
  sub    $0x1,%eax
  mov    %eax,%r8d
  shr    $0x1f,%r8d
  add    %eax,%r8d
  sar    %r8d
  add    $0x1,%r8d
  mov    $0x1,%esi
  test   %r8d,%r8d
  jg     L120
  movslq %r8d,%rax
  movb   $0x0,(%rbx,%rax,1)
  mov    $0x1,%esi
  jmp    L341
L355:
  call   <__stack_chk_fail@plt>
```

tool_calls: name: unpack_data
arguments: tag: D3
type_infered: string

tool: D3: <invalid>

assistant: ```c
void to_dec(char *r, char *d) {
  int i, j, k, length, iter = 0;
  char string1[1024], string2[1024];
  ;
  init_roman();
  length = strlen(r);
  j = 0;
  for (i = 0; i < length; i++) {
    if ((r[i] >= 'a') && (r[i] <= 'z'))
      r[i] -= 32;
    switch (r[i]) {
    case 'I': {
      string1[j] = 1;
      ++j;
      break;
    }
    case 'V': {
      string1[j] = 2;
      ++j;
      break;
    }
    case 'X': {
      string1[j] = 3;
      ++j;
      break;
    }
    case 'L': {
      string1[j] = 4;
      ++j;
      break;
    }
    case 'C': {
      string1[j] = 5;
      ++j;
      break;
    }
    case 'D': {
      string1[j] = 6;
      ++j;
      break;
    }
    case 'M': {
      string1[j] = 7;
      ++j;
      break;
    }
    case '^': {
      string1[j - 1] += 6;
      break;
    }
    default: {
      strcpy(d, "<invalid>");
      return;
      break;
    }
    }
  }
  length = j;
  string1[length] = 0;
  string2[0] = string1[0];
  i = 1;
  j = 1;
  while (i < length) {
    if ((string1[i] == string1[i - 1] + 1) && (string1[i] % 2 == 0)) {
      --j;
      for (k = 0; k < 4; k++) {
        string2[j] = string1[i - 1];
        j++;
      };
      ++i;
    } else if ((string1[i] == string1[i - 1] + 2) && (string1[i] % 2 == 1)) {
      string2[j - 1] = string1[i] - 1;
      for (k = 0; k < 4; k++) {
        string2[j] = string1[i - 1];
        j++;
      };
      ++i;
    } else {
      string2[j] = string1[i];
      ++i;
      ++j;
    }
  }
  length = j;
  string2[length] = 0;
  for (i = 1; i < length; i++) {
    k = string2[i] - string2[i - 1];
    if (k > 0) {
      strcpy(d, "<invalid>");
      return;
    }
    if (k < 0)
      iter = 0;
    if (k == 0)
      ++iter;
    if (iter >= 4) {
      strcpy(d, "<invalid>");
      return;
    }
  }
  k = 1 + (string2[0] - 1) / 2;
  for (i = 0; i < k; i++)
    d[i] = '0';
  d[k] = 0;
  for (i = 0; i < length; i++) {
    j = k - (string2[i] + 1) / 2;
    if (string2[i] % 2)
      d[j] += 1;
    else
      d[j] += 5;
    if (d[j] > '9') {
      strcpy(d, "<invalid>");
      return;
    }
  }
}
```