It worked! Now the simulation ends correctly.
Thanks.
On Fri, May 14, 2010 at 2:52 AM, Gabe Black <[email protected]> wrote:
> Here's a patch to try. It didn't seem to break anything, but I don't
> have a good way to make sure it does what it's supposed to.
>
> Gabe
>
> Gustavo Henrique Nihei wrote:
> > Hi Gabe,
> >
> > the instruction at address 0x10b194 is movg, but it is using a FP
> > state register:
> >
> > movg %fcc3, 0, %g1
> >
> > I was taking a look at the decoder implementation, and it seems the
> > simulation stops when the following function is executed:
> >
> > inline Movccfcc::Movccfcc(ExtMachInst machInst)
> > : Trap("movccfcc", machInst, IntAluOp)
> > {
> >
> > _numSrcRegs = 0;
> > _numDestRegs = 0;
> > _numFPDestRegs = 0;
> > _numIntDestRegs = 0;;
> > }
> >
> > I don't know much about the SPARC ISA, so any help would be appreciated.
> >
> > I'm using the stable version of m5, and a SPARC_SE platform.
> > The MPGenc from ALPBench was cross-compiled with gcc-4.5.0,
> > binutils-2.20.1 and glibc-2.3.6.
> >
> > Thanks.
> >
> > On Wed, May 12, 2010 at 4:04 AM, Gabe Black <[email protected]
> > <mailto:[email protected]>> wrote:
> >
> > Way back when I was first adding SPARC support, I had hoped to get
> > around providing FP support by making our implementation pretend
> there
> > was no FPU and to fault on the instructions that required it like the
> > spec said I could. That didn't really work out, and most of the
> > instructions that just faulted were replaced by functional
> > equivalents.
> > It seems your workload is trying to use one that was never properly
> > implemented. If you can identify what instruction it is you could
> > implement it yourself, or if you're not in a hurry you can give me
> > a way
> > to reproduce the problem and I can give it a shot. I can't make any
> > strong guarantees about when I could take care of it though.
> >
> > Gabe
> >
> > Gustavo Henrique Nihei wrote:
> > > Hi,
> > >
> > > This fatal error is happening during the simulation of a SPARC_SE
> > > platform.
> > >
> > > M5 Simulator System
> > >
> > > Copyright (c) 2001-2008
> > > The Regents of The University of Michigan
> > > All Rights Reserved
> > >
> > >
> > > M5 compiled May 5 2010 14:24:46
> > > M5 revision 94c016415053+ 6283+ default tip
> > > M5 started May 11 2010 15:11:44
> > > M5 executing on nime-desktop
> > > command line: ../../build/SPARC_SE/m5.fast run.py -n 4 -t
> > > Global frequency set at 1000000000000 ticks per second
> > > 0: system.remote_gdb.listener: listening for remote gdb on port
> 7002
> > > 0: system.remote_gdb.listener: listening for remote gdb on port
> 7003
> > > 0: system.remote_gdb.listener: listening for remote gdb on port
> 7000
> > > 0: system.remote_gdb.listener: listening for remote gdb on port
> 7001
> > > info: Entering event queue @ 0. Starting simulation...
> > > fatal: fault (fp_disabled) detected @ PC 0x10b194
> > > @ cycle 37023056000
> > > [invoke:build/SPARC_SE/sim/faults.cc, line 43]
> > > Memory Usage: 220052 KBytes
> > > For more information see: http://www.m5sim.org/fatal/f78c96bc
> > >
> > > I'm trying to run the MPGenc software in the platform.
> > > I suppose the fault "fp_disabled" is related to a floating point
> > > operation, right?
> > > Is there some kind of workaround for this problem?
> > >
> > > --
> > > Gustavo Henrique Nihei
> > >
> >
> ------------------------------------------------------------------------
> > >
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> >
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> >
> >
> >
> >
> > --
> > Gustavo Henrique Nihei
> > LAPS - Laboratório de Automação do Projeto de Sistemas
> > Universidade Federal de Santa Catarina
> > Florianópolis - Santa Catarina - Brasil
> > ------------------------------------------------------------------------
> >
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> > [email protected]
> > http://m5sim.org/cgi-bin/mailman/listinfo/m5-users
>
>
> _______________________________________________
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>
--
Gustavo Henrique Nihei
LAPS - Laboratório de Automação do Projeto de Sistemas
Universidade Federal de Santa Catarina
Florianópolis - Santa Catarina - Brasil
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