user: 请从给定的汇编指令推导出C源代码:

```asm
<longestValidParentheses>:
  endbr64
  push   %r12
  xor    %r12d,%r12d
  push   %rbx
  sub    $0x8,%rsp
  test   %rdi,%rdi
  je     L14
  mov    %rdi,%rbx
  call   <strlen@plt>
  movslq %eax,%r12
  lea    0x1(%r12),%edi
  call   <malloc@plt>
  mov    %rax,%rdi
  movb   $0x0,(%rax,%r12,1)
  movzbl (%rbx),%eax
  mov    %rdi,%rcx
  mov    %rdi,%rdx
  test   %al,%al
  jne    L385
  jmp    L54
  nopl   0x0(%rax,%rax,1)
L276:
  cmp    $0x5b,%al
  jne    L466
L384:
  mov    %al,(%rdx)
  add    $0x1,%rdx
L307:
  movzbl 0x1(%rbx),%eax
  add    $0x1,%rbx
  test   %al,%al
  je     L54
L385:
  cmp    $0x5d,%al
  je     L450
  jg     L179
  cmp    $0x29,%al
  jne    L276
  movzbl -0x1(%rdx),%eax
  cmp    %rdx,%rdi
  je     L441
  cmp    $0x28,%al
  je     L83
L441:
  cmp    $0x2a,%al
  je     L439
L370:
  add    $0x1,%rbx
  movb   $0x29,(%rdx)
  add    $0x1,%rdx
  movzbl (%rbx),%eax
  test   %al,%al
  jne    L385
  nop
L54:
  movzbl (%rdi),%eax
  mov    %rdi,%rdx
  xor    %ecx,%ecx
  xor    %esi,%esi
  xor    %r12d,%r12d
  test   %al,%al
  jne    L608
  jmp    L72
  nopl   0x0(%rax,%rax,1)
L76:
  cmp    %ecx,%esi
  cmovl  %ecx,%esi
  movzbl 0x1(%rdx),%eax
  add    $0x1,%rdx
  xor    %ecx,%ecx
  test   %al,%al
  je     L510
L608:
  cmp    $0x2a,%al
  jne    L76
  movzbl 0x1(%rdx),%eax
  add    $0x1,%rdx
  add    $0x2,%ecx
  test   %al,%al
  jne    L608
L510:
  cmp    %ecx,%esi
  cmovge %esi,%ecx
  mov    %ecx,%r12d
L72:
  call   <free@plt>
L14:
  add    $0x8,%rsp
  mov    %r12d,%eax
  pop    %rbx
  pop    %r12
  ret
  cs nopw 0x0(%rax,%rax,1)
L179:
  cmp    $0x7b,%al
  je     L384
  cmp    $0x7d,%al
  jne    L307
  movzbl -0x1(%rdx),%eax
  cmp    %rdx,%rdi
  je     L224
  cmp    $0x7b,%al
  je     L166
L224:
  cmp    $0x2a,%al
  je     L217
L142:
  movb   $0x7d,(%rdx)
  add    $0x1,%rdx
  jmp    L307
  nopl   (%rax)
L466:
  cmp    $0x28,%al
  je     L384
  jmp    L307
  nopl   (%rax)
L450:
  movzbl -0x1(%rdx),%eax
  cmp    %rdx,%rdi
  je     L231
  cmp    $0x5b,%al
  je     L29
L231:
  cmp    $0x2a,%al
  je     L507
L147:
  movb   $0x5d,(%rdx)
  add    $0x1,%rdx
  jmp    L307
  nopl   0x0(%rax)
L439:
  cmpb   $0x28,(%rcx)
  jne    L370
  movb   $0x2a,(%rcx)
  cmp    %rcx,%rdi
  je     L307
  nopl   (%rax)
L293:
  sub    $0x1,%rcx
  cmp    %rcx,%rdi
  je     L307
  cmpb   $0x2a,(%rcx)
  je     L293
  jmp    L307
  nop
L507:
  cmpb   $0x5b,(%rcx)
  jne    L147
  movb   $0x2a,(%rcx)
  cmp    %rcx,%rdi
  je     L307
  nopl   0x0(%rax)
L392:
  sub    $0x1,%rcx
  cmp    %rcx,%rdi
  je     L307
  cmpb   $0x2a,(%rcx)
  je     L392
  jmp    L307
  nop
L217:
  cmpb   $0x7b,(%rcx)
  jne    L142
  movb   $0x2a,(%rcx)
  cmp    %rcx,%rdi
  je     L307
  nopl   (%rax)
L597:
  sub    $0x1,%rcx
  cmp    %rcx,%rdi
  je     L307
  cmpb   $0x2a,(%rcx)
  je     L597
  jmp    L307
  nop
L166:
  lea    -0x1(%rdx),%rax
  movb   $0x2a,-0x1(%rdx)
  cmp    %rax,%rdi
  je     L307
  lea    -0x2(%rdx),%rcx
  cmp    %rcx,%rdi
  jne    L465
  jmp    L307
  nop
L194:
  sub    $0x1,%rcx
  cmp    %rcx,%rdi
  je     L307
L465:
  cmpb   $0x2a,(%rcx)
  je     L194
  jmp    L307
  nopw   0x0(%rax,%rax,1)
L83:
  lea    -0x1(%rdx),%rax
  movb   $0x2a,-0x1(%rdx)
  cmp    %rax,%rdi
  je     L307
  lea    -0x2(%rdx),%rcx
  cmp    %rcx,%rdi
  jne    L359
  jmp    L307
  nop
L617:
  sub    $0x1,%rcx
  cmp    %rcx,%rdi
  je     L307
L359:
  cmpb   $0x2a,(%rcx)
  je     L617
  jmp    L307
  nopw   0x0(%rax,%rax,1)
L29:
  lea    -0x1(%rdx),%rax
  movb   $0x2a,-0x1(%rdx)
  cmp    %rax,%rdi
  je     L307
  lea    -0x2(%rdx),%rcx
  cmp    %rcx,%rdi
  jne    L68
  jmp    L307
  nop
L5:
  sub    $0x1,%rcx
  cmp    %rcx,%rdi
  je     L307
L68:
  cmpb   $0x2a,(%rcx)
  je     L5
  jmp    L307
```

assistant: ```c
int longestValidParentheses(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));
  char *pStack = stack;
  pStack[sLen] = '\0';
  char *stackPre = stack;
  ;
  while (*s) {
    switch (*s) {
    case '(':
    case '{':
    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 {
          *pStack = ')';
          pStack++;
        }
      } else {
        *pStack = ')';
        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 {
          *pStack = '}';
          pStack++;
        }
      } else {
        *pStack = '}';
        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 {
          *pStack = ']';
          pStack++;
        }
      } else {
        *pStack = ']';
        pStack++;
      }
      break;
    }
    s++;
  }
  maxLen = 0;
  curLen = 0;
  pStack = stack;
  while (*pStack) {
    if (*pStack == '*') {
      curLen += 2;
    } else {
      if (curLen > maxLen) {
        maxLen = curLen;
      }
      curLen = 0;
    }
    pStack++;
  }
  if (curLen > maxLen) {
    maxLen = curLen;
  }
  free(stack);
  return maxLen;
}
```