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Re: [Qemu-devel] qemu simple user mode testing (arm, ppc, sparc)


From: Fabrice Bellard
Subject: Re: [Qemu-devel] qemu simple user mode testing (arm, ppc, sparc)
Date: Mon, 16 Feb 2004 21:01:53 +0100
User-agent: Mozilla/5.0 (X11; U; Linux i686; en-US; rv:1.4) Gecko/20030624


You usually get this exception if a FPU instruction is used (qemu does not support FPU on sparc yet).

Fabrice.

Karel Gardas wrote:
On Mon, 16 Feb 2004, Fabrice Bellard wrote:


Interesting ! I thought that SPARC was the less stable target (I left
some register window exception problems in it)...


I have just finished cross-compilation of MICO (http://www.mico.org) and
try small demo which failed with:

thinkpad:/mnt/karel/mico-sparc/demo/bench$ qemu-sparc -L 
/mnt/karel/cross/crosstool-0.27/result/sparc-unknown-linux-gnu/gcc-3.3.2-glibc-2.3.2/sparc-unknown-linux-gnu/
 ./server
Unhandled trap: 0x2
pc: 0x0002a2f8  npc: 0x0002a2fc
General Registers:
%g0: 0x00000000 %g1: 0x0031e070 %g2: 0x0042b000 %g3: 0x0042cf70
%g4: 0x00000000 %g5: 0x00005f00 %g6: 0xff000000 %g7: 0x401f3468
Current Register Window:
%o0: 0x00215ccc %o1: 0x00000000 %o2: 0x003c3110 %o3: 0x0042b4cc
%o4: 0x3000474c %o5: 0x401db790 %o6: 0x401db6d8 %o7: 0x00303d8c
%l0: 0x0042a070 %l1: 0x402079c0 %l2: 0x42367314 %l3: 0x42374a7a
%l4: 0x00000002 %l5: 0x40207cc8 %l6: 0x00000000 %l7: 0x0042a824
%i0: 0x0042a0cc %i1: 0x402079c0 %i2: 0x00000338 %i3: 0x00000334
%i4: 0x000007a9 %i5: 0x00000005 %i6: 0x401db740 %i7: 0x00127640
psr: 0x0000001c -> ---- wim: 0x00000002
thinkpad:/mnt/karel/mico-sparc/demo/bench$

So, indeed, there are still some issues. :-)

Anyway, overall impression from QEMU is very good, I just hope that I will
be able to use it for our MICO related testing for x-linux (where x !=
x86) platforms -- I plan to do some testing of a bit larger C++ app for
you, if you are interested.

Thanks,

Karel
--
Karel Gardas                  address@hidden
ObjectSecurity Ltd.           http://www.objectsecurity.com



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