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Re: [Qemu-devel] Alpha update

From: David S. Miller
Subject: Re: [Qemu-devel] Alpha update
Date: Sat, 03 May 2003 09:32:22 -0700 (PDT)

   From: address@hidden
   Date: Sat, 03 May 2003 19:29:26 +0200 (CEST)

   Quoting "David S. Miller" <address@hidden>:
   > There are some problems I'm trying to deal with now with respect to
   > register windows, it just requires some brainstorming.
   I've seen that gcc for Sparc has an option to generate "flat" code
   not using register windows. Have you considered using that ?

I already played with this :-)

It's not usable because due to a bug in gcc when you
use -mflat it doesn't honor -fno-delayed-branch.

I have to use -fno-delayed-branch so that the instructions emitted for
the op-i386.o routines don't have pieces moved into the delay slot of
the sparc return instruction.

I have test-i386 fully passing except for 3 float tests at this
point.  Once I resolve that I'll start playing with using shared
libraries and things like that.

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