user: 这段汇编代码用C语言表示是什么样的?

```asm
<check_for_hvm>:
  endbr64
  push   %rbp
  mov    %rsp,%rbp
  sub    $0x30,%rsp
  mov    %fs:0x28,%rax
  mov    %rax,-0x8(%rbp)
  xor    %eax,%eax
  lea    -0x1c(%rbp),%rsi
  lea    -0x20(%rbp),%rcx
  lea    -0x24(%rbp),%rdx
  lea    -0x28(%rbp),%rax
  mov    %rsi,%r8
  mov    %rax,%rsi
  mov    $0x40000000,%edi
  call   <cpuid@plt>
  lea    -0x15(%rbp),%rax
  mov    -0x24(%rbp),%edx
  mov    %edx,(%rax)
  lea    -0x15(%rbp),%rax
  add    $0x4,%rax
  mov    -0x20(%rbp),%edx
  mov    %edx,(%rax)
  lea    -0x15(%rbp),%rax
  add    $0x8,%rax
  mov    -0x1c(%rbp),%edx
  mov    %edx,(%rax)
  movb   $0x0,-0x9(%rbp)
  lea    -0x15(%rbp),%rax
  mov    %rax,%rsi
  lea    D64(%rip),%rax
  mov    %rax,%rdi
  call   <strcmp@plt>
  test   %eax,%eax
  jne    L78
  lea    D51(%rip),%rax
  mov    %rax,%rdi
  call   <printf@plt>
  jmp    L30
L78:
  lea    -0x15(%rbp),%rax
  mov    %rax,%rsi
  lea    D34(%rip),%rax
  mov    %rax,%rdi
  call   <strcmp@plt>
  test   %eax,%eax
  jne    L45
  lea    D29(%rip),%rax
  mov    %rax,%rdi
  call   <printf@plt>
  jmp    L30
L45:
  lea    -0x15(%rbp),%rax
  mov    %rax,%rsi
  lea    D57(%rip),%rax
  mov    %rax,%rdi
  call   <strcmp@plt>
  test   %eax,%eax
  jne    L17
  lea    D68(%rip),%rax
  mov    %rax,%rdi
  call   <printf@plt>
  jmp    L30
L17:
  lea    -0x15(%rbp),%rax
  mov    %rax,%rsi
  lea    D80(%rip),%rax
  mov    %rax,%rdi
  call   <strcmp@plt>
  test   %eax,%eax
  jne    L22
  lea    D56(%rip),%rax
  mov    %rax,%rdi
  call   <printf@plt>
  jmp    L30
L22:
  lea    D49(%rip),%rax
  mov    %rax,%rdi
  call   <printf@plt>
L30:
  nop
  mov    -0x8(%rbp),%rax
  sub    %fs:0x28,%rax
  je     L60
  call   <__stack_chk_fail@plt>
L60:
  leave
  ret
```

tool_calls: name: retrieve_data
arguments: data_tag: D64
datatype: string
name: retrieve_data
arguments: data_tag: D51
datatype: string
name: retrieve_data
arguments: data_tag: D34
datatype: string
name: retrieve_data
arguments: data_tag: D29
datatype: string
name: retrieve_data
arguments: data_tag: D57
datatype: string
name: retrieve_data
arguments: data_tag: D68
datatype: string
name: retrieve_data
arguments: data_tag: D80
datatype: string
name: retrieve_data
arguments: data_tag: D56
datatype: string
name: retrieve_data
arguments: data_tag: D49
datatype: string

tool: D64: KVMKVMKVM

tool: D51: KVM guest.


tool: D34: XenVMMXenVMM

tool: D29: Xen HVM guest.


tool: D57: Microsoft Hv

tool: D68: Microsoft Hv guest.


tool: D80: VMwareVMware

tool: D56: VMWare guest.


tool: D49: No KVM or Xen HVM


assistant: ```c
void check_for_hvm(void) {
  uint32_t eax, ebx, ecx, edx;
  char signature[13];
  cpuid(0x40000000, &eax, &ebx, &ecx, &edx);
  *(uint32_t *)(signature + 0) = ebx;
  *(uint32_t *)(signature + 4) = ecx;
  *(uint32_t *)(signature + 8) = edx;
  signature[12] = '\0';
  if (!strcmp("KVMKVMKVM", signature)) {
    printf("KVM guest.\n");
  } else if (!strcmp("XenVMMXenVMM", signature)) {
    printf("Xen HVM guest.\n");
  } else if (!strcmp("Microsoft Hv", signature)) {
    printf("Microsoft Hv guest.\n");
  } else if (!strcmp("VMwareVMware", signature)) {
    printf("VMWare guest.\n");
  } else {
    printf("No KVM or Xen HVM\n");
  }
}
```