* [Qemu-devel] Please help fix an illegal instruction / SSE problem
@ 2007-02-16 3:51 Ilya Shar
2007-02-16 9:12 ` Pierre d'Herbemont
0 siblings, 1 reply; 2+ messages in thread
From: Ilya Shar @ 2007-02-16 3:51 UTC (permalink / raw)
To: qemu-devel
Every Cocoa application I try to run under
i386-darwin-user/qemu-i386 exits on an illegal
instruction:
Starting
/Applications/Calculator.app/Contents/MacOS/Calculator
with qemu
----------------
queue_signal: sig=4
qemu: uncaught target signal 4 (Illegal instruction) -
exiting
The last block always executes SSE instructions:
----------------
IN:
0xffff0ab7: movdqa 0xfffffffa(%esi,%edx,1),%xmm0
0xffff0abd: movdqa 0xa(%esi,%edx,1),%xmm1
0xffff0ac3: movdqa 0x1a(%esi,%edx,1),%xmm2
0xffff0ac9: movdqa 0x2a(%esi,%edx,1),%xmm3
0xffff0acf: movdqa 0x3a(%esi,%edx,1),%xmm4
0xffff0ad5: movdqa %xmm0,%xmm5
0xffff0ad9: movdqa %xmm4,%xmm0
0xffff0add: data16
0xffff0ade: (bad)
Non-graphics applications run fine.
Could it be a configuration/compilation problem
(although some SEE instructions seem to be handled
fine)? If not, is there a way to better diagnose the
problem? I on Mac OS Intel with QEMU 0.9.0.
Thank you for your help!
Ilya
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^ permalink raw reply [flat|nested] 2+ messages in thread
* Re: [Qemu-devel] Please help fix an illegal instruction / SSE problem
2007-02-16 3:51 [Qemu-devel] Please help fix an illegal instruction / SSE problem Ilya Shar
@ 2007-02-16 9:12 ` Pierre d'Herbemont
0 siblings, 0 replies; 2+ messages in thread
From: Pierre d'Herbemont @ 2007-02-16 9:12 UTC (permalink / raw)
To: qemu-devel
On 16 févr. 07, at 04:51, Ilya Shar wrote:
> Every Cocoa application I try to run under
> i386-darwin-user/qemu-i386 exits on an illegal
> instruction:
>
> Starting
> /Applications/Calculator.app/Contents/MacOS/Calculator
> with qemu
> ----------------
> queue_signal: sig=4
> qemu: uncaught target signal 4 (Illegal instruction) -
> exiting
>
> The last block always executes SSE instructions:
> ----------------
> IN:
> 0xffff0ab7: movdqa 0xfffffffa(%esi,%edx,1),%xmm0
> 0xffff0abd: movdqa 0xa(%esi,%edx,1),%xmm1
> 0xffff0ac3: movdqa 0x1a(%esi,%edx,1),%xmm2
> 0xffff0ac9: movdqa 0x2a(%esi,%edx,1),%xmm3
> 0xffff0acf: movdqa 0x3a(%esi,%edx,1),%xmm4
> 0xffff0ad5: movdqa %xmm0,%xmm5
> 0xffff0ad9: movdqa %xmm4,%xmm0
> 0xffff0add: data16
> 0xffff0ade: (bad)
>
> Non-graphics applications run fine.
>
> Could it be a configuration/compilation problem
> (although some SEE instructions seem to be handled
> fine)? If not, is there a way to better diagnose the
> problem? I on Mac OS Intel with QEMU 0.9.0.
Calculator is crashing in the commpage (see darwin-user/commpage.c).
Commpage is for now shared with the host for x86-on-x86 (and for ppc-
on-ppc too). As the commpage is optimized by the kernel for your host
specific proc, there tends to be problem with qemu. You could try to
play a bit with qemu cpuid (darwin-user/main.c:788), or implement the
needed instructions in qemu. An other way would be to use what's in
commpage.c (see commpage_init()), by translating the target address
space.
Pierre.
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