user: 下面的汇编指令对应的C源代码是什么:

```asm
<lex>:
  endbr64
  push   %r15
  push   %r14
  push   %r13
  push   %r12
  push   %rbp
  push   %rbx
  sub    $0x8,%rsp
  mov    %rdi,%r13
  mov    %rsi,%r12
  mov    $0x0,%ebx
  mov    $0x3,%r14d
  lea    D10(%rip),%r15
  jmp    L60
L272:
  cmp    $0x3,%ebx
  jne    L266
  movsbl %bpl,%edi
  call   <isdigit@plt>
  test   %eax,%eax
  je     L338
  addl   $0x1,(%r12)
  jmp    L60
L111:
  movsbl %bpl,%edi
  call   <isdigit@plt>
  mov    %eax,%ebx
  test   %eax,%eax
  je     L321
  addl   $0x1,(%r12)
  mov    $0x1,%ebx
  jmp    L60
L321:
  cmp    $0x3e,%bpl
  jg     L28
  cmp    $0x1f,%bpl
  jle    L248
  sub    $0x20,%ebp
  cmp    $0x1e,%bpl
  ja     L108
  movzbl %bpl,%ebp
  lea    D13(%rip),%rdx
  movslq (%rdx,%rbp,4),%rax
  add    %rdx,%rax
  notrack jmp *%rax
L248:
  test   %bpl,%bpl
  jne    L108
  mov    $0x900,%ebx
L273:
  mov    %ebx,%eax
  add    $0x8,%rsp
  pop    %rbx
  pop    %rbp
  pop    %r12
  pop    %r13
  pop    %r14
  pop    %r15
  ret
L28:
  cmp    $0x76,%bpl
  je     L169
  jle    L40
  cmp    $0x7e,%bpl
  jne    L108
  addl   $0x1,(%r12)
  mov    $0x500,%ebx
  jmp    L273
L40:
  cmp    $0x5e,%bpl
  je     L165
  cmp    $0x63,%bpl
  jne    L108
  addl   $0x1,(%r12)
  mov    $0x800,%ebx
  jmp    L273
  addl   $0x1,(%r12)
  jmp    L60
  addl   $0x1,(%r12)
  mov    $0x2,%ebx
  jmp    L60
  addl   $0x1,(%r12)
  mov    $0x100,%ebx
  jmp    L273
  addl   $0x1,(%r12)
  mov    $0x200,%ebx
  jmp    L273
L165:
  addl   $0x1,(%r12)
  mov    $0x300,%ebx
  jmp    L273
L169:
  addl   $0x1,(%r12)
  mov    $0x400,%ebx
  jmp    L273
  addl   $0x1,(%r12)
  mov    $0x600,%ebx
  jmp    L273
  addl   $0x1,(%r12)
  mov    $0x700,%ebx
  jmp    L273
L108:
  addl   $0x1,(%r12)
  jmp    L273
L332:
  cmp    $0x2e,%bpl
  jne    L383
  addl   $0x1,(%r12)
  mov    %r14d,%ebx
  jmp    L60
L237:
  movsbl %bpl,%edi
  call   <isdigit@plt>
  mov    %eax,%ebx
  test   %eax,%eax
  je     L132
  addl   $0x1,(%r12)
  mov    %r14d,%ebx
  jmp    L60
L132:
  addl   $0x1,(%r12)
  jmp    L273
L266:
  mov    %r15,%rdi
  call   <printf@plt>
  mov    $0x1,%edi
  call   <exit@plt>
L60:
  movslq (%r12),%rax
  movzbl 0x0(%r13,%rax,1),%ebp
  cmp    $0x2,%ebx
  je     L237
  jg     L272
  test   %ebx,%ebx
  je     L111
  cmp    $0x1,%ebx
  jne    L266
  movsbl %bpl,%edi
  call   <isdigit@plt>
  test   %eax,%eax
  je     L332
  addl   $0x1,(%r12)
  jmp    L60
L383:
  mov    $0x800,%ebx
  jmp    L273
L338:
  mov    $0x800,%ebx
  jmp    L273
```

tool_calls: name: disassemble_data
arguments: data_label: D10
type_guessed: string

tool: D10: Lex:Estado indefinido

assistant: ```c
int lex(char *str, int *pos) {
  int estado = 0;
  char c;
  while (1) {
    c = str[*pos];
    switch (estado) {
    case 0:
      if (isdigit(c)) {
        (*pos)++;
        estado = 1;
      } else
        switch (c) {
        case ' ':
          (*pos)++;
          break;
        case '.':
          (*pos)++;
          estado = 2;
          break;
        case '<':
          (*pos)++;
          return 0x0100;
        case '>':
          (*pos)++;
          return 0x0200;
        case '^':
          (*pos)++;
          return 0X0300;
        case 'v':
          (*pos)++;
          return 0x0400;
        case '~':
          (*pos)++;
          return 0x0500;
        case '(':
          (*pos)++;
          return 0x0600;
        case ')':
          (*pos)++;
          return 0x0700;
        case 'c':
          (*pos)++;
          return 0x0800;
        case '\0':
          return 0x0900;
        default:
          (*pos)++;
          return 0x0000;
        }
      break;
    case 1:
      if (isdigit(c))
        (*pos)++;
      else if (c == '.') {
        estado = 3;
        (*pos)++;
      } else {
        return 0x0800;
      }
      break;
    case 2:
      if (isdigit(c)) {
        (*pos)++;
        estado = 3;
      } else {
        (*pos)++;
        return 0x0000;
      }
      break;
    case 3:
      if (isdigit(c))
        (*pos)++;
      else {
        return 0x0800;
      }
      break;
    default:
      printf("Lex:Estado indefinido");
      exit(1);
    }
  }
}
```