user: 请从给定的汇编指令推导出C源代码：

```asm
<parseElement>:
  endbr64
  push   %r15
  push   %r14
  push   %r13
  mov    %rcx,%r13
  push   %r12
  mov    %rsi,%r12
  push   %rbp
  push   %rbx
  mov    %rdi,%rbx
  sub    $0x828,%rsp
  movsbl (%rdi),%edi
  mov    %rdx,(%rsp)
  mov    %fs:0x28,%rax
  mov    %rax,0x818(%rsp)
  xor    %eax,%eax
  test   %dil,%dil
  jne    L179
  jmp    L292
  nopw   0x0(%rax,%rax,1)
L180:
  movsbl 0x1(%rbx),%edi
  add    $0x1,%rbx
  test   %dil,%dil
  je     L292
L179:
  call   <isspace@plt>
  test   %rax,%rax
  jne    L180
  movsbl (%rbx),%edi
  cmp    $0x2f,%dil
  jne    L423
  movl   $0x0,0xc(%rsp)
  movsbl 0x1(%rbx),%edi
  lea    0x1(%rbx),%r15
  mov    $0x1,%ebx
L432:
  cmp    $0x3f,%dil
  jbe    L495
L449:
  mov    %r15,%rbp
  jmp    L367
  nopl   0x0(%rax)
L454:
  movsbl 0x1(%rbp),%edi
  add    $0x1,%rbp
  test   %dil,%dil
  je     L50
L367:
  call   <isspace@plt>
  test   %rax,%rax
  je     L454
  cmpb   $0x0,0x0(%rbp)
  je     L50
  movb   $0x0,0x0(%rbp)
  lea    0x1(%rbp),%r14
  test   %ebx,%ebx
  jne    L228
  movsbl 0x1(%rbp),%edi
  test   %dil,%dil
  jne    L33
  jmp    L130
  nopl   0x0(%rax,%rax,1)
L474:
  movsbl 0x1(%r14),%edi
  lea    0x1(%r14),%rax
  test   %dil,%dil
  je     L114
L303:
  mov    %rax,%r14
L33:
  call   <isspace@plt>
  test   %rax,%rax
  jne    L474
  movsbl (%r14),%edi
  lea    0x1(%rbx),%ebp
  test   %dil,%dil
  je     L120
  cmp    $0x2f,%dil
  je     L51
  movslq %ebx,%rax
  mov    %r14,0x10(%rsp,%rax,8)
  jmp    L480
  nopl   0x0(%rax,%rax,1)
L389:
  cmpb   $0x3d,(%r14)
  movsbl 0x1(%r14),%edi
  lea    0x1(%r14),%rcx
  je     L47
  test   %dil,%dil
  je     L402
  mov    %rcx,%r14
L480:
  call   <isspace@plt>
  test   %rax,%rax
  je     L389
  cmpb   $0x0,(%r14)
  jne    L5
L402:
  lea    0x2(%rbx),%eax
  mov    %ebp,%esi
L176:
  movslq %esi,%rsi
  cltq
  movq   $0x0,0x10(%rsp,%rsi,8)
  movq   $0x0,0x10(%rsp,%rax,8)
  test   %r12,%r12
  je     L292
  mov    0xc(%rsp),%eax
  test   %eax,%eax
  je     L292
  lea    0x10(%rsp),%rdx
  mov    %r15,%rsi
  mov    %r13,%rdi
  call   *%r12
  nopw   0x0(%rax,%rax,1)
L292:
  mov    0x818(%rsp),%rax
  sub    %fs:0x28,%rax
  jne    L235
  add    $0x828,%rsp
  pop    %rbx
  pop    %rbp
  pop    %r12
  pop    %r13
  pop    %r14
  pop    %r15
  ret
  nopl   0x0(%rax)
L5:
  lea    0x1(%r14),%rcx
L47:
  movzbl 0x1(%r14),%eax
  movb   $0x0,(%r14)
  cmp    $0x22,%al
  je     L353
  test   %al,%al
  je     L402
  nopl   0x0(%rax)
L272:
  movzbl 0x1(%rcx),%eax
  add    $0x1,%rcx
  test   %al,%al
  je     L402
  cmp    $0x22,%al
  jne    L272
L353:
  test   %al,%al
  je     L402
  movzbl 0x1(%rcx),%edx
  lea    0x1(%rcx),%rax
  movslq %ebp,%rbp
  lea    0x2(%rbx),%esi
  mov    %rax,0x10(%rsp,%rbp,8)
  cmp    $0x22,%dl
  je     L102
  test   %dl,%dl
  je     L293
  nopl   0x0(%rax,%rax,1)
L131:
  movzbl 0x1(%rax),%edx
  add    $0x1,%rax
  test   %dl,%dl
  je     L293
  cmp    $0x22,%dl
  jne    L131
L102:
  test   %dl,%dl
  je     L293
  movb   $0x0,(%rax)
  add    $0x1,%rax
L293:
  movsbl (%rax),%edi
  test   %dil,%dil
  je     L227
  cmp    $0xfe,%esi
  jg     L227
  movslq %esi,%rbx
  jmp    L303
L50:
  test   %ebx,%ebx
  je     L130
L228:
  mov    $0x1,%ebp
  xor    %ebx,%ebx
L51:
  movq   $0x0,0x10(%rsp,%rbx,8)
  movslq %ebp,%rbp
  movq   $0x0,0x10(%rsp,%rbp,8)
  test   %r12,%r12
  je     L125
  mov    0xc(%rsp),%edx
  test   %edx,%edx
  je     L125
  lea    0x10(%rsp),%rdx
  mov    %r15,%rsi
  mov    %r13,%rdi
  call   *%r12
L125:
  mov    (%rsp),%rax
  test   %rax,%rax
  je     L292
  mov    %r15,%rsi
  mov    %r13,%rdi
  call   *%rax
  jmp    L292
L423:
  mov    %rbx,%r15
  movl   $0x1,0xc(%rsp)
  xor    %ebx,%ebx
  jmp    L432
L227:
  lea    0x3(%rbx),%eax
  jmp    L176
L495:
  movabs $0x8000000200000001,%rax
  bt     %rdi,%rax
  jae    L449
  jmp    L292
L114:
  lea    0x1(%rbx),%eax
  mov    %ebx,%esi
  jmp    L176
L130:
  mov    $0x1,%eax
  xor    %esi,%esi
  jmp    L176
L120:
  mov    %ebp,%eax
  mov    %ebx,%esi
  jmp    L176
L235:
  call   <__stack_chk_fail@plt>
```

assistant: ```c
void parseElement(char *s, void (*startelCb)(void *ud, const char *el, const char **attr), void (*endelCb)(void *ud, const char *el), void *ud) {
  const char *attr[256];
  int nattr = 0;
  char *name;
  int start = 0;
  int end = 0;
  while (*s && isspace(*s))
    s++;
  if (*s == '/') {
    s++;
    end = 1;
  } else {
    start = 1;
  }
  if (!*s || *s == '?' || *s == '!')
    return;
  name = s;
  while (*s && !isspace(*s))
    s++;
  if (*s) {
    *s++ = '\0';
  }
  while (!end && *s && nattr < 256 - 1) {
    while (*s && isspace(*s))
      s++;
    if (!*s)
      break;
    if (*s == '/') {
      end = 1;
      break;
    }
    attr[nattr++] = s;
    while (*s && !isspace(*s) && *s != '=')
      s++;
    if (*s) {
      *s++ = '\0';
    }
    while (*s && *s != '\"')
      s++;
    if (!*s)
      break;
    s++;
    attr[nattr++] = s;
    while (*s && *s != '\"')
      s++;
    if (*s) {
      *s++ = '\0';
    }
  }
  attr[nattr++] = 0;
  attr[nattr++] = 0;
  if (start && startelCb)
    (*startelCb)(ud, name, attr);
  if (end && endelCb)
    (*endelCb)(ud, name);
}
```