user: 请从给定的汇编指令推导出C源代码:

```asm
<attrinfo>:
  endbr64
  push   %rbp
  mov    %rsp,%rbp
  sub    $0x50,%rsp
  mov    %rdi,-0x48(%rbp)
  mov    %fs:0x28,%rax
  mov    %rax,-0x8(%rbp)
  xor    %eax,%eax
  lea    -0x40(%rbp),%rax
  mov    %rax,%rdi
  call   <pthread_attr_init@plt>
  lea    -0x20(%rbp),%rdx
  lea    -0x28(%rbp),%rcx
  lea    -0x40(%rbp),%rax
  mov    %rcx,%rsi
  mov    %rax,%rdi
  call   <pthread_attr_getstack@plt>
  lea    -0x20(%rbp),%rdx
  lea    -0x40(%rbp),%rax
  mov    %rdx,%rsi
  mov    %rax,%rdi
  call   <pthread_attr_getstacksize@plt>
  lea    -0x3c(%rbp),%rdx
  lea    -0x40(%rbp),%rax
  mov    %rdx,%rsi
  mov    %rax,%rdi
  call   <pthread_attr_getdetachstate@plt>
  lea    -0x38(%rbp),%rdx
  lea    -0x40(%rbp),%rax
  mov    %rdx,%rsi
  mov    %rax,%rdi
  call   <pthread_attr_getscope@plt>
  lea    -0x34(%rbp),%rdx
  lea    -0x40(%rbp),%rax
  mov    %rdx,%rsi
  mov    %rax,%rdi
  call   <pthread_attr_getinheritsched@plt>
  lea    -0x30(%rbp),%rdx
  lea    -0x40(%rbp),%rax
  mov    %rdx,%rsi
  mov    %rax,%rdi
  call   <pthread_attr_getschedpolicy@plt>
  lea    -0x18(%rbp),%rdx
  lea    -0x40(%rbp),%rax
  mov    %rdx,%rsi
  mov    %rax,%rdi
  call   <pthread_attr_getguardsize@plt>
  lea    -0x2c(%rbp),%rdx
  lea    -0x40(%rbp),%rax
  mov    %rdx,%rsi
  mov    %rax,%rdi
  call   <pthread_attr_getschedparam@plt>
  mov    -0x48(%rbp),%rax
  mov    %rax,-0x10(%rbp)
  mov    -0x10(%rbp),%rax
  mov    %rax,%rdi
  call   <pthread_mutex_lock@plt>
  mov    $0x0,%eax
  call   <pthread_self@plt>
  mov    %rax,%rsi
  lea    D42(%rip),%rax
  mov    %rax,%rdi
  mov    $0x0,%eax
  call   <printf@plt>
  mov    -0x28(%rbp),%rax
  mov    %rax,%rsi
  lea    D53(%rip),%rax
  mov    %rax,%rdi
  mov    $0x0,%eax
  call   <printf@plt>
  mov    -0x20(%rbp),%rax
  mov    %rax,%rsi
  lea    D43(%rip),%rax
  mov    %rax,%rdi
  mov    $0x0,%eax
  call   <printf@plt>
  mov    -0x18(%rbp),%rax
  mov    %rax,%rsi
  lea    D24(%rip),%rax
  mov    %rax,%rdi
  mov    $0x0,%eax
  call   <printf@plt>
  mov    -0x3c(%rbp),%eax
  mov    %eax,%esi
  mov    $0x64,%edi
  call   <attrstr@plt>
  mov    %rax,%rsi
  lea    D40(%rip),%rax
  mov    %rax,%rdi
  mov    $0x0,%eax
  call   <printf@plt>
  mov    -0x38(%rbp),%eax
  mov    %eax,%esi
  mov    $0x73,%edi
  call   <attrstr@plt>
  mov    %rax,%rsi
  lea    D59(%rip),%rax
  mov    %rax,%rdi
  mov    $0x0,%eax
  call   <printf@plt>
  mov    -0x34(%rbp),%eax
  mov    %eax,%esi
  mov    $0x69,%edi
  call   <attrstr@plt>
  mov    %rax,%rsi
  lea    D38(%rip),%rax
  mov    %rax,%rdi
  mov    $0x0,%eax
  call   <printf@plt>
  mov    -0x30(%rbp),%eax
  mov    %eax,%esi
  mov    $0x70,%edi
  call   <attrstr@plt>
  mov    %rax,%rsi
  lea    D71(%rip),%rax
  mov    %rax,%rdi
  mov    $0x0,%eax
  call   <printf@plt>
  mov    -0x2c(%rbp),%eax
  mov    %eax,%esi
  lea    D4(%rip),%rax
  mov    %rax,%rdi
  mov    $0x0,%eax
  call   <printf@plt>
  mov    $0xa,%edi
  call   <putchar@plt>
  mov    -0x10(%rbp),%rax
  mov    %rax,%rdi
  call   <pthread_mutex_unlock@plt>
  mov    $0x0,%eax
  mov    -0x8(%rbp),%rdx
  sub    %fs:0x28,%rdx
  je     L0
  call   <__stack_chk_fail@plt>
L0:
  leave
  ret
```

tool_calls: name: read_data
arguments: data_label: D42
type: string
name: read_data
arguments: data_label: D53
type: string
name: read_data
arguments: data_label: D43
type: string
name: read_data
arguments: data_label: D24
type: string
name: read_data
arguments: data_label: D40
type: string
name: read_data
arguments: data_label: D59
type: string
name: read_data
arguments: data_label: D38
type: string
name: read_data
arguments: data_label: D71
type: string
name: read_data
arguments: data_label: D4
type: string

tool: D42: thread id: %lx


tool: D53: thread stack addr: %p


tool: D43: thread stack size: %zu bytes


tool: D24: thread guard size: %zu bytes


tool: D40: detach state: %s


tool: D59: scope: %s


tool: D38: inherit sched: %s


tool: D71: sched policy: %s


tool: D4: thread priority: %d


assistant: ```c
void *attrinfo(void *arg) {
  pthread_mutex_t *mutex;
  pthread_attr_t attr;
  void *stackaddr;
  size_t stacksize, guardsize;
  int detach, scope, isched, psched;
  struct sched_param sp;
  pthread_attr_init(&attr);
  pthread_attr_getstack(&attr, &stackaddr, &stacksize);
  pthread_attr_getstacksize(&attr, &stacksize);
  pthread_attr_getdetachstate(&attr, &detach);
  pthread_attr_getscope(&attr, &scope);
  pthread_attr_getinheritsched(&attr, &isched);
  pthread_attr_getschedpolicy(&attr, &psched);
  pthread_attr_getguardsize(&attr, &guardsize);
  pthread_attr_getschedparam(&attr, &sp);
  mutex = arg;
  pthread_mutex_lock(mutex);
  printf("thread id: %lx\n", (unsigned long)pthread_self());
  printf("thread stack addr: %p\n", stackaddr);
  printf("thread stack size: %zu bytes\n", stacksize);
  printf("thread guard size: %zu bytes\n", guardsize);
  printf("detach state: %s\n", attrstr('d', detach));
  printf("scope: %s\n", attrstr('s', scope));
  printf("inherit sched: %s\n", attrstr('i', isched));
  printf("sched policy: %s\n", attrstr('p', psched));
  printf("thread priority: %d\n", sp.sched_priority);
  printf("\n");
  pthread_mutex_unlock(mutex);
  return NULL;
}
```