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SubjectRe: Intel P6 vs P7 system call performance

On Mon, 16 Dec 2002 11:07:06 -0500, Jonah Sherman wrote:

>On Mon, Dec 16, 2002 at 12:54:32PM -0500, Mark Mielke wrote:

>>Programs that self verify their own CRC may get a little confused (are
>>there any of these left?), but other than that, 'goto is better avoided'
>>as well, but sometimes 'goto' is the best answer.

>This shouldn't cause any problems. The only way this would cause a problem
>is if the program had direct system calls in it, but as long as they are
>using libc(what self-crcing program doesn't use libc?), the changes would
>only be made to code pages inside libc, so the program's own code pages
>would remain untouched.

A program that checked its own CRC would probably be statically linked. This
is especially likely to be true if the CRC was for security reasons.


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