X-Authentication-Warning: delorie.com: mail set sender to djgpp-bounces using -f
Date: Sun, 28 Oct 2007 23:02:55 -0400
Message-Id: <200710290302.l9T32tKe029306@envy.delorie.com>
From: DJ Delorie <dj AT delorie DOT com>
To: djgpp AT delorie DOT com
In-reply-to: <1193625983.368281.325560@57g2000hsv.googlegroups.com> (message
	from RayeR on Sun, 28 Oct 2007 19:46:23 -0700)
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>
   <1193303455 DOT 688747 DOT 180190 AT 50g2000hsm DOT googlegroups DOT com>
   <200710251524 DOT l9PFOeNi022585 AT envy DOT delorie DOT com> <1193625983 DOT 368281 DOT 325560 AT 57g2000hsv DOT googlegroups DOT com>
Errors-To: nobody AT delorie DOT com
X-Mailing-List: djgpp AT delorie DOT com
X-Unsubscribes-To: listserv AT delorie DOT com
Precedence: bulk


> The last part of asm block lists the "clobbered" registers which was
> changed by CPUID and we need to tell GCC to restore them
> automatically - so no push/pop needed around.

Yup.  Specifically, gcc knows to save and restore them *somehow* *if*
it needs to.  It may not need to save them, it may choose to copy them
to another register.