免费注册 查看新帖 |

Chinaunix

  平台 论坛 博客 文库
最近访问板块 发新帖
查看: 788 | 回复: 0
打印 上一主题 下一主题

.set [复制链接]

论坛徽章:
0
跳转到指定楼层
1 [收藏(0)] [报告]
发表于 2008-07-02 17:50 |只看该作者 |倒序浏览
.set
Sets (and clears) various flags that affect generated code. The following table may not be a complete list.
Flag
noreorder
        Turns off reordering of instructions. When on, t.i. when the assembler is reordering, it will put the last instruction before j or jr after the jump so it'll be in the branch delay slot. When off, you'll have to do it yourself.

mips3
        Tells the assembler that it can use the MIPS III instructions. Withouth it as simulates 64 bit instructions, and believe me, that's something you don't want.

reorder
        Allows the assembler to reorder instructions; see noreorder

pop
        Not really a flag but restores the state of the flags to what it was before the last .set push; see push.

push
        Nor really a flag but saves the status of the flags so it can be restored with .set pop. Not really useful (I think) outside inline assembly. Use in pairs with .set pop.

[/url]


本文来自ChinaUnix博客,如果查看原文请点:[url]http://blog.chinaunix.net/u2/65427/showart_1071490.html
您需要登录后才可以回帖 登录 | 注册

本版积分规则 发表回复

  

北京盛拓优讯信息技术有限公司. 版权所有 京ICP备16024965号-6 北京市公安局海淀分局网监中心备案编号:11010802020122 niuxiaotong@pcpop.com 17352615567
未成年举报专区
中国互联网协会会员  联系我们:huangweiwei@itpub.net
感谢所有关心和支持过ChinaUnix的朋友们 转载本站内容请注明原作者名及出处

清除 Cookies - ChinaUnix - Archiver - WAP - TOP