user: 请显示与下面列出的汇编代码相匹配的C语言实现：

```asm
<set_reg>:
  endbr64
  mov    %edi,%eax
  cmp    $0x10,%edx
  je     L153
  cmp    $0x20,%edx
  je     L216
  mov    $0x0,%edi
  cmp    $0x8,%edx
  je     L113
L19:
  mov    %edi,%eax
  ret
L113:
  mov    %eax,%edi
  mov    %rdi,D81(%rip)
  movzbl (%eax),%edx
  movzbl %dl,%edi
  mov    %edi,D23(%rip)
  movb   $0x8,D76(%rip)
  cmp    $0x1,%ecx
  je     L157
  cmp    $0x2,%ecx
  je     L239
  test   %ecx,%ecx
  je     L20
  mov    %sil,(%eax)
  mov    $0x1,%edi
  jmp    L19
L153:
  mov    %edi,%edi
  mov    %rdi,D89(%rip)
  movzwl (%eax),%edx
  movzwl %dx,%edi
  mov    %edi,D27(%rip)
  movb   $0x10,D76(%rip)
  cmp    $0x1,%ecx
  je     L23
  cmp    $0x2,%ecx
  je     L235
  test   %ecx,%ecx
  je     L168
  mov    %si,(%eax)
  mov    $0x1,%edi
  jmp    L19
L216:
  mov    %edi,%edi
  mov    %rdi,D27(%rip)
  mov    (%eax),%edx
  mov    %edx,D82(%rip)
  movb   $0x20,D76(%rip)
  cmp    $0x1,%ecx
  je     L41
  cmp    $0x2,%ecx
  je     L158
  test   %ecx,%ecx
  je     L180
  mov    %esi,(%eax)
  mov    $0x1,%edi
  jmp    L19
L20:
  mov    %sil,(%eax)
  mov    $0x1,%edi
  jmp    L19
L157:
  or     %esi,%edx
  mov    %dl,(%eax)
  mov    $0x1,%edi
  jmp    L19
L239:
  and    %esi,%edx
  mov    %dl,(%eax)
  mov    $0x1,%edi
  jmp    L19
L168:
  mov    %si,(%eax)
  mov    $0x1,%edi
  jmp    L19
L23:
  or     %esi,%edx
  mov    %dx,(%eax)
  mov    $0x1,%edi
  jmp    L19
L235:
  and    %esi,%edx
  mov    %dx,(%eax)
  mov    $0x1,%edi
  jmp    L19
L180:
  mov    %esi,(%eax)
  mov    $0x1,%edi
  jmp    L19
L41:
  or     %esi,%edx
  mov    %edx,(%eax)
  mov    $0x1,%edi
  jmp    L19
L158:
  and    %esi,%edx
  mov    %edx,(%eax)
  mov    $0x1,%edi
  jmp    L19
```

assistant: ```c
char set_reg(unsigned int addr, unsigned int value, int size, int flag) {
  static unsigned char *temp_8;
  static unsigned short *temp_16;
  static unsigned int *temp_32;
  static char sel = 0;
  static unsigned int temp_value;
  switch (size) {
  case 8:
    temp_8 = (unsigned char *)(addr);
    temp_value = (unsigned char)*temp_8;
    sel = 8;
    break;
  case 16:
    temp_16 = (unsigned short *)(addr);
    temp_value = (unsigned int)*temp_16;
    sel = 16;
    break;
  case 32:
    temp_32 = (unsigned int *)(addr);
    temp_value = *temp_32;
    sel = 32;
    break;
  default:
    return 0;
  }
  switch (sel) {
  case 8:
    switch (flag) {
    case 0:
      *temp_8 = (unsigned char)value;
      if (*temp_8 != (unsigned char)value)
        return 0;
      return 1;
    case 1:
      *temp_8 |= (unsigned char)value;
      if (*temp_8 != (unsigned char)(temp_value | value))
        return 0;
      return 1;
    case 2:
      *temp_8 &= (unsigned char)value;
      if (*temp_8 != (unsigned char)(temp_value & value))
        return 0;
      return 1;
    default:
      *temp_8 = (unsigned char)value;
      if (*temp_8 != (unsigned char)value)
        return 0;
      return 1;
    }
  case 16:
    switch (flag) {
    case 0:
      *temp_16 = (unsigned short)value;
      if (*temp_16 != (unsigned short)value)
        return 0;
      return 1;
    case 1:
      *temp_16 |= (unsigned short)value;
      if (*temp_16 != (unsigned short)(temp_value | value))
        return 0;
      return 1;
    case 2:
      *temp_16 &= (unsigned short)value;
      if (*temp_16 != (unsigned short)(temp_value & value))
        return 0;
      return 1;
    default:
      *temp_16 = (unsigned short)value;
      if (*temp_16 != (unsigned short)value)
        return 0;
      return 1;
    }
  case 32:
    switch (flag) {
    case 0:
      *temp_32 = value;
      if (*temp_32 != value)
        return 0;
      return 1;
    case 1:
      *temp_32 |= value;
      if (*temp_32 != (temp_value | value))
        return 0;
      return 1;
    case 2:
      *temp_32 &= value;
      if (*temp_32 != (temp_value & value))
        return 0;
      return 1;
    default:
      *temp_32 = value;
      if (*temp_32 != value)
        return 0;
      return 1;
    }
  default:
    return 0;
  }
}
```