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Date: Wed, 24 Oct 2007 23:06:39 -0400
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From: DJ Delorie <dj AT delorie DOT com>
To: djgpp AT delorie DOT com
In-reply-to: <ffp07f$66t$1@aioe.org> (do_not_have@nohavenot.cmm)
Subject: Re: Using inline asm
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> > >    asm ("cpuid" : "=a" (iRet));
> 
> Huh?  I'm sure I missed something...  That takes care of eax for cpuid, but
> that ignores ebx, ecx, and edx.  cpuid trashes those four registers whether
> he returns them or not, correct?   How does GCC correct the other three?

   asm ("cpuid" : "=a" (iRet) : : "ebx", "ecx", "edx");

Or something like that.