Hi all, I have applied a recent patch that implements some x87 floating point instructions. The current situation (infinite loop) hasn't really changed, but I got rid of
warn: instruction 'fldcw_Mw' unimplemented Now two more to go; warn: instruction 'wbinvd' unimplemented warn: instruction 'fwait' unimplemented The patch: http://reviews.gem5.org/r/1742/ If you already builded gem5, you will need to *remove the directory load_constants and all *.pyc files from the directory src/arch/x86/isa/insts * (Thanks to Nilay for the heads up). 2013/2/28 mehmet basaran <mehmetbasara...@gmail.com> > Hi all, > > I am getting unimplemented instruction warnings followed by an infinite > loop. After some research I found out that x87 instructions are > unimplemented and I should pass some flags to compiler ( > http://www.mail-archive.com/gem5-users@gem5.org/msg04837.html). I > compiled my binary to use SSE instructions as suggested with the following > flags. > > -mfpmath=sse > -march=native -mfpmath=sse > > I still got stuck in infinite loop. > > When I look at gcc documentation, ( > http://gcc.gnu.org/onlinedocs/gcc/i386-and-x86_002d64-Options.html) > > *For the i386 compiler, you must use -march=cpu-type, -msse or -msse2switches > to enable SSE extensions and make this option effective. For the > x86-64 compiler, these extensions are enabled by default.* > > I am using 64bit gcc and so those flags shouldn't matter. > > *What ISAs should I specify to compiler to get rid of these warnings? I > have cheked maillist but there are no solutions related to this issue. How > do you guys workaround this??* > > For side note; I am trying to run NAS parallel benchmarks on gem5. The > code is written in fortran, c (uses openmp) and I compile it using > gfortran, gcc respectively. Instruction below are unimplemented. > > warn: instruction 'wbinvd' unimplemented > warn: instruction 'fldcw_Mw' unimplemented > warn: instruction 'fwait' unimplemented > > Thanks > Mehmet > >
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