user: 提供的汇编代码用C语言表示会是什么样子:

```asm
<longestValidParentheses2>:
  endbr64
  push   %rbp
  mov    %rsp,%rbp
  sub    $0x40,%rsp
  mov    %rdi,-0x38(%rbp)
  cmpq   $0x0,-0x38(%rbp)
  jne    L100
  mov    $0x0,%eax
  jmp    L13
L100:
  movl   $0x0,-0x30(%rbp)
  movl   $0x0,-0x2c(%rbp)
  mov    -0x38(%rbp),%rax
  mov    %rax,%rdi
  call   <strlen@plt>
  mov    %eax,-0x24(%rbp)
  mov    -0x24(%rbp),%eax
  add    $0x1,%eax
  mov    %eax,%edi
  call   <malloc@plt>
  mov    %rax,-0x10(%rbp)
  cmpq   $0x0,-0x10(%rbp)
  jne    L181
  mov    $0xffffffff,%eax
  jmp    L13
L181:
  mov    -0x10(%rbp),%rax
  mov    %rax,-0x20(%rbp)
  mov    -0x24(%rbp),%eax
  movslq %eax,%rdx
  mov    -0x10(%rbp),%rax
  add    %rdx,%rax
  mov    %rax,-0x8(%rbp)
  mov    -0x10(%rbp),%rax
  mov    %rax,-0x18(%rbp)
  jmp    L236
L180:
  mov    -0x38(%rbp),%rax
  movzbl (%rax),%eax
  movsbl %al,%eax
  cmp    $0x28,%eax
  je     L96
  cmp    $0x29,%eax
  je     L135
  jmp    L280
L96:
  mov    -0x38(%rbp),%rax
  movzbl (%rax),%edx
  mov    -0x20(%rbp),%rax
  mov    %dl,(%rax)
  addq   $0x1,-0x20(%rbp)
  jmp    L280
L135:
  mov    -0x20(%rbp),%rax
  cmp    -0x10(%rbp),%rax
  je     L82
  mov    -0x20(%rbp),%rax
  sub    $0x1,%rax
  movzbl (%rax),%eax
  cmp    $0x28,%al
  jne    L82
  mov    -0x20(%rbp),%rax
  sub    $0x1,%rax
  movb   $0x2a,(%rax)
  mov    -0x20(%rbp),%rax
  sub    $0x1,%rax
  cmp    %rax,-0x10(%rbp)
  je     L281
  mov    -0x20(%rbp),%rax
  sub    $0x2,%rax
  mov    %rax,-0x18(%rbp)
  jmp    L79
L286:
  subq   $0x1,-0x18(%rbp)
L79:
  mov    -0x18(%rbp),%rax
  cmp    -0x10(%rbp),%rax
  je     L281
  mov    -0x18(%rbp),%rax
  movzbl (%rax),%eax
  cmp    $0x2a,%al
  je     L286
  jmp    L281
L82:
  mov    -0x20(%rbp),%rax
  sub    $0x1,%rax
  movzbl (%rax),%eax
  cmp    $0x2a,%al
  jne    L134
  mov    -0x18(%rbp),%rax
  movzbl (%rax),%eax
  cmp    $0x28,%al
  jne    L119
  mov    -0x18(%rbp),%rax
  movb   $0x2a,(%rax)
  jmp    L72
L157:
  subq   $0x1,-0x18(%rbp)
L72:
  mov    -0x18(%rbp),%rax
  cmp    -0x10(%rbp),%rax
  je     L80
  mov    -0x18(%rbp),%rax
  movzbl (%rax),%eax
  cmp    $0x2a,%al
  je     L157
  jmp    L80
L119:
  mov    -0x20(%rbp),%rax
  cmp    -0x8(%rbp),%rax
  je     L80
  mov    -0x20(%rbp),%rax
  movb   $0x29,(%rax)
  addq   $0x1,-0x20(%rbp)
  jmp    L80
L134:
  mov    -0x20(%rbp),%rax
  cmp    -0x8(%rbp),%rax
  je     L80
  mov    -0x20(%rbp),%rax
  movb   $0x29,(%rax)
  addq   $0x1,-0x20(%rbp)
  jmp    L80
L281:
  nop
L80:
  nop
L280:
  addq   $0x1,-0x38(%rbp)
L236:
  mov    -0x38(%rbp),%rax
  movzbl (%rax),%eax
  test   %al,%al
  jne    L180
  mov    -0x10(%rbp),%rax
  mov    %rax,-0x20(%rbp)
  movl   $0x0,-0x28(%rbp)
  movl   $0x0,-0x28(%rbp)
  jmp    L109
L299:
  mov    -0x28(%rbp),%eax
  movslq %eax,%rdx
  mov    -0x20(%rbp),%rax
  add    %rdx,%rax
  movzbl (%rax),%eax
  cmp    $0x2a,%al
  jne    L256
  addl   $0x2,-0x2c(%rbp)
  jmp    L61
L256:
  mov    -0x2c(%rbp),%eax
  cmp    -0x30(%rbp),%eax
  jle    L107
  mov    -0x2c(%rbp),%eax
  mov    %eax,-0x30(%rbp)
L107:
  movl   $0x0,-0x2c(%rbp)
L61:
  addl   $0x1,-0x28(%rbp)
L109:
  mov    -0x28(%rbp),%eax
  cmp    -0x24(%rbp),%eax
  jl     L299
  mov    -0x2c(%rbp),%eax
  cmp    -0x30(%rbp),%eax
  jle    L233
  mov    -0x2c(%rbp),%eax
  mov    %eax,-0x30(%rbp)
L233:
  mov    -0x10(%rbp),%rax
  mov    %rax,%rdi
  call   <free@plt>
  mov    -0x30(%rbp),%eax
L13:
  leave
  ret
```

assistant: ```c
int longestValidParentheses2(char *s) {
  if (s == NULL) {
    return 0;
  }
  int maxLen = 0;
  int curLen = 0;
  int sLen = strlen(s);
  char *stack = (char *)malloc((sLen + 1) * sizeof(char));
  if (stack == NULL) {
    return -1;
  }
  char *pStack = stack;
  char *stackEnd = stack + sLen;
  char *stackPre = stack;
  ;
  while (*s) {
    switch (*s) {
    case '(':
      *pStack = *s;
      pStack++;
      break;
    case ')':
      if (pStack != stack && *(pStack - 1) == '(') {
        *(pStack - 1) = '*';
        if (pStack - 1 != stack) {
          stackPre = pStack - 2;
          while (stackPre != stack && *stackPre == '*') {
            stackPre--;
          }
        }
      } else if (*(pStack - 1) == '*') {
        if (*stackPre == '(') {
          *stackPre = '*';
          while (stackPre != stack && *stackPre == '*') {
            stackPre--;
          }
        } else if (pStack != stackEnd) {
          *pStack = ')';
          pStack++;
        }
      } else if (pStack != stackEnd) {
        *pStack = ')';
        pStack++;
      }
      break;
    }
    s++;
  }
  pStack = stack;
  int i = 0;
  for (i = 0; i < sLen; i++) {
    if (pStack[i] == '*') {
      curLen += 2;
    } else {
      if (curLen > maxLen) {
        maxLen = curLen;
      }
      curLen = 0;
    }
  }
  if (curLen > maxLen) {
    maxLen = curLen;
  }
  free(stack);
  return maxLen;
}
```