void process(int* q)
{
asm (//std命名空间下,不能使用_asm_
"push %eax\n\r" //寄存器要在前面加上%,多个命令时,命令以\n\r结尾,使得在将汇
//编代码插入目标文件时会换行
"push %ebx\n\r"
"push %ebx\n\r"
"mov $0x10,%eax\n\r" //立即数前加$
"mov $0x15,%ebx\n\r"
"add %ebx,%eax\n\r"
);
asm(
"mov %%eax,%0"
:"=r"((int)*q)
);
asm(
"pop %ecx\n\r"
"pop %ebx\n\r"
"pop %eax\n\r"
);
cout <<*q;
}
扩展:
http://www.ibm.com/developerworks/cn/linux/sdk/assemble/inline/index.html
http://blog.youkuaiyun.com/hgd_dingjun/article/details/2809988
http://hi.baidu.com/pangbanme/blog/item/bace5b66fb83ae25ab184cad.html
http://blog.youkuaiyun.com/feixiaoxing/article/details/6755132