Thanks Gabe it worked. All I did was change the name field in unameFunc from "2.6.26" to "2.6.31.1" (the latest one in the menuconfig of ct-ng) and it ran without any errors/panics.
I guess it's just a sanity check sort of thing in the M5 code. Malek On Fri, Jun 25, 2010 at 1:45 PM, Gabe Black <gbl...@eecs.umich.edu> wrote: > Different versions of glibc depend on different versions of the linux > kernel, and it looks like the one you're using wants something newer > than what M5 is claiming to be. You can adjust that in the uname > emulation function in src/arch/alpha/linux/process.cc, but there may > still be some functionality glibc starts to use that we're not > providing. That field is currently set to 2.6.26 which isn't that old so > maybe more is going on. At that low a cycle count you're almost > certainly executing early code in glibc bringup. Getting a different > cross compiler is reasonable, but you might also want to try adjusting > that field and see what happens. > > The panic is probably some other problem related to code that's not > normally exercised either in M5 or the workload or a combination of the > two, likely a simulated NULL pointer to a structure being dereferenced. > > Gabe > > Malek Musleh wrote: >> Hello, >> >> I am trying to build an Alpha Cross Compiler using crosstool, but am >> able to successfully build it and compile some sample test programs, >> but when I try to run it in M5 (Alpha_SE mode) i get an error saying: >> >> >> FATAL: kernel too old >> panic: Tried to access unmapped address 0x30. >> @ cycle 316500 >> >> Now I tried compiling this test program using the prebuilt Alpha Cross >> Compilers on the M5 Wiki page, and they run just fine in M5. Could >> someone provide the specific menuconfig for ct-ng for which the ones >> on the website were built, as well as which version of crosstool was >> used? >> >> The options I used were derived from the Parsec Report on M5 (from >> University of Texas-Austin) >> >> >> • Target options >> – Target Architecture - alpha >> – Variant - ev67 >> • Operating System >> – Target OS - linux >> • Binary utilities >> – binutils version - 2.19.1 >> • C compiler >> – gcc version - 4.3.4 >> – Additional supported languages: C++ >> • C-library >> – C library - glibc >> – glibc version - 2.6.1 >> – Threading implementation to use - nptl >> >> The only difference I see between this set of configuration and the >> one I can tell from the prebuilt one on the M5 wiki is the gcc >> version (4.3.2 instead of 4.3.4) but I don't think that's where the >> error is coming from. I thought maybe it was an issue of 32-bit / >> 64-bit machine on which I was building the cross compiler, but I tried >> using both the 32-bit/64-bit prebuilt cross compilers, but my program >> still executed just fine in M5 regardless of which was prebuilt >> compiler was used. >> >> >> My other question is in regards to references of how to modify the >> alpha cross compiler to recognize new instructions that I add to the >> ISA (my reason for building the cross compiler myself as opposed to >> using the prebuilt ones). I came across this previous thread: >> http://www.mail-archive.com/m5-users@m5sim.org/msg03131.html >> and see that I have to modify tc-alpha.c/tc-alpha.h in the gas/config >> directory, but I can't seem to find some more specifics as to >> what/where in those files? Suggestions/directions on this? >> >> Thanks. >> >> >> Malek >> _______________________________________________ >> m5-users mailing list >> m5-users@m5sim.org >> http://m5sim.org/cgi-bin/mailman/listinfo/m5-users >> > > _______________________________________________ > m5-users mailing list > m5-users@m5sim.org > http://m5sim.org/cgi-bin/mailman/listinfo/m5-users > _______________________________________________ m5-users mailing list m5-users@m5sim.org http://m5sim.org/cgi-bin/mailman/listinfo/m5-users
