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Re: [Qemu-devel] [patch] make qemu work with GCC 4

From: Michael Matz
Subject: Re: [Qemu-devel] [patch] make qemu work with GCC 4
Date: Wed, 29 Aug 2007 13:40:29 +0200 (CEST)


On Wed, 29 Aug 2007, Andreas Färber wrote:

> Am I right to assume that compiling with gcc3 will still work with your 
> patch?


> In that case your patch would enable qemu to run on gcc4-only platforms 
> (where performance doesn't matter too much yet) while allowing to 
> compile with gcc3 for performance reasons where necessary.

If necessary yes.  The patch obviously would need to be changed to be 
conditional not only on HOST_I386 but also on GCC version.  Better to do 
benchmarks first, if it's worthwhile.

> >The whole patch is against a 0.9.0-cvs version from 2007-07-09 (Alex 
> >might know the exact checkout date), so chances are that it still 
> >applies :)
> What do you mean with 0.9.0-cvs? The 0.9.0 GCC4 patches for OSX/Intel 

Do you mean my patches?

> don't apply to HEAD possibly due to some inline assembler changes,

It seems target-z80 doesn't exist in CVS, apart from that there's a small 
s/target_ulong/ppc_gpr_t/ in the target-ppc hunk.  Otherwise it applies 
just fine (I'll attach the patch against CVS, in case pine managed to 
mangle it last time).

> and if merged manually resulted in a crash...

I just tested the attached patch with qemu fresh from CVS on HOST_I386 
with target i386 (no kqemu, so it's really emulating), and target mipsel.
It works just fine.  (gcc 4.1.2 for that matter)


Attachment: qemu-mm-gcc4-cvs.patch
Description: Text Data

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