Basically, the problem was that a form of Nop wasn't being decoded correctly which threw off the location of instruction boundaries. It's fixed in the repository.
Gabe On Tue, 29 Jul 2008, Viren Kumar wrote: > Hello everyone, > > I've just started using M5 in X86 SE mode. My ultimate goal is to run some > SPEC 2000 benchmarks on it, so I thought I'd start by compiling the provided > Hello World application myself to test the waters. > > First, I built m5.debug and that was fine. I then compiled the Hello World > program with gcc 4.1.2 on an AMD64 Barcelona system running Gentoo 2.6.21 > > barcelona# gcc -o test test.c --static > > I compared this against the given /tests/test-progs/hello/bin/x86/linux/hello > and saw the difference in kernel versions with file: > > $ file ../tests/test-progs/hello/bin/x86/linux/hello > ../tests/test-progs/hello/bin/x86/linux/hello: ELF 64-bit LSB executable, > x86-64, version 1 (SYSV), for GNU/Linux 2.4.1, statically linked, not > stripped > > and mine was: > > $ file test > test: ELF 64-bit LSB executable, x86-64, version 1 (SYSV), for GNU/Linux > 2.6.9, statically linked, not stripped > > I changed the command option in configs/example/se.py and ran the script with > tracing in m5 and got: > > $ build/X86_SE/m5.debug --trace-flags="X86" configs/example/se.py > ... > ... > 36500: global: Setting int reg 17 to value 0x60 > 36500: global: Setting int reg 32 to value 0 > 37000: global: Setting int reg 16 to value 0 > 37000: global: Read int reg 16 and got value 0 > 37000: global: Read int reg 0 and got value 0x7fffffffee38 > 37000: global: Read int reg 17 and got value 0x60 > 37000: global: ADD_M_R : st: The address is 0x7fffffffedc3 > 37500: global: Setting int reg 16 to value 0 > fatal: fault (Invalid-Opcode) detected @ PC 0x400332 > @ cycle 37500 > [invoke:build/X86_SE/sim/faults.cc, line 43] > Memory Usage: 543424 KBytes > > > I'm not sure what's causing the Invalid Opcode problem here. I searched the > mailing list archive but wasn't able to find anything on this error, so > thought I'd post here and ask. > > Thanks in advance, > Viren > > > > _______________________________________________ > m5-users mailing list > [email protected] > http://m5sim.org/cgi-bin/mailman/listinfo/m5-users > _______________________________________________ m5-users mailing list [email protected] http://m5sim.org/cgi-bin/mailman/listinfo/m5-users
