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Date: | Wed, 24 Oct 2007 23:06:39 -0400 |
Message-Id: | <200710250306.l9P36dqi002391@envy.delorie.com> |
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 |
References: | <471FEAC8 DOT 5179 DOT 2FAB88DB AT gerritvn DOT gpvno DOT co DOT za> <200710250120 DOT l9P1KEb2032374 AT envy DOT delorie DOT com> <ffp07f$66t$1 AT aioe DOT org> |
Errors-To: | nobody AT delorie DOT com |
X-Mailing-List: | djgpp AT delorie DOT com |
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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.
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