Re: [Qemu-devel] Mac OS X issues

[Joachim Henke]

I just did some tests on the freedos image from your web-site and my first
impression is that these crashes are something compiler related. When I
build qemu with

./configure --prefix=/usr/local --cc=gcc-3.3 --target-list=i386-softmmu 
--enable-cocoa

and start your image with

qemu -hda harddisk_1.img -soundhw sb16

it starts up and immediately crashes after 1 or 2 seconds (Bus error) -
even before I could choose one of the 3 menu options. For the next test I
applied the patch below and compiled qemu with GCC 4.0.1:

--- Makefile.target
+++ Makefile.target
@@ -148,7 +148,7 @@
 
 ifeq ($(HAVE_GCC3_OPTIONS),yes)
 # very important to generate a return at the end of every operation
-OP_CFLAGS+=-fno-reorder-blocks -fno-optimize-sibling-calls
+OP_CFLAGS+=-fno-reorder-blocks -fno-optimize-sibling-calls -fno-tree-ch
 endif
 
 ifeq ($(CONFIG_DARWIN),yes)


./configure --prefix=/usr/local --cc=gcc-4.0 --target-list=i386-softmmu 
--enable-cocoa --disable-gcc-check

With this build everything seems to work perfectly. I boot into option 1
and run the DOOM demo with b.bat - it runs for ca. 100 seconds and then
quits back to DOS saying 'timed 2134 gametics in 2325 realtics'.

Can you try if using GCC 4 helps for you too? I'll do some more tests now.
Hopefully I can track down the problem to someting more specific.

Jo.

Mike Kronenberg wrote:
> You find a freedos including doom here:
> http://www.kberg.ch/q/userfiles/freedosdoom.zip
>
> or at the oszoo.org
>
> Crashes:
> - when choosing option 1 (standard)
> about 10-20 sec into doom, when playing timedemo (doom -timedemo  
> demo3), otherwise, too.
>
>
> This used to work great before.
>
> Thanks,
> Mike