摘要：最近要写一些hvm虚拟机windows调用xen中hypercall的代码，发现一个问题就是unsigned long在windows中和linux中代表的位数不同，因此想调查一下。使用测试程序：#include <stdio.h>int main(){ printf("unsigned long long: %d\n", sizeof(unsigned long long)); printf("unsigned long: %d\n", sizeof(unsigned long)); printf("unsigned int: % 阅读全文