eLua Simulator
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Hello eLuers,
I've recently found out that qemu is able to simulate the lm3s6965evb which is compatible with eLua ( did any one knew? good news huh? :) ). But i've got into a little problem, After removing some examples from SConstruct ( wasn't fitting when building codesourcery ). I've tried running
qemu like this: `qemu-system-arm -M lm3s6965evb -kernel elua_lua_lm3s6965.bin' qemu: hardware error: ssys_read: Bad offset 0x70 CPU #0:
R00=01c00380 R01=400fe060 R02=400fe070 R03=078e3ac0 R04=01c00380 R05=00000000 R06=00000000 R07=00000000 R08=00000000 R09=00000000 R10=00000000 R11=00000000 R12=00000000 R13=2000ffb0 R14=00004101 R15=00004402
PSR=20000173 --C- T svc32 Aborted Any one have ever tried this? Does it work? Does it worth trying? Best, Marcelo.
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On Mon, Nov 8, 2010 at 3:48 PM, Marcelo Politzer <[hidden email]> wrote:
> Hello eLuers, > I've recently found out that qemu is able to simulate the lm3s6965evb which > is compatible with eLua ( did any one knew? good news huh? :) ). Never tried it, I actually didn't know that qemu emulates something else than x86. Good to know :) > But i've got into a little problem, After removing some examples from > SConstruct ( wasn't fitting when building codesourcery ). I've tried running > qemu like this: > `qemu-system-arm -M lm3s6965evb -kernel elua_lua_lm3s6965.bin' > qemu: hardware error: ssys_read: Bad offset 0x70 > CPU #0: > R00=01c00380 R01=400fe060 R02=400fe070 R03=078e3ac0 > R04=01c00380 R05=00000000 R06=00000000 R07=00000000 > R08=00000000 R09=00000000 R10=00000000 R11=00000000 > R12=00000000 R13=2000ffb0 R14=00004101 R15=00004402 > PSR=20000173 --C- T svc32 > Aborted > Any one have ever tried this? Does it work? Does it worth trying? Did you try disassembling the elf file (arm-none-eabi-objdump -d elua_lua_lm3s6965.elf) and see where the actualy error is (PC equals 0x4402, as shown above, so it can easily identify the error location). I have a feeling that while qemu might emulate the CPU just fine, it most likely have issues with peripheral emulation. This is just of the many possible causes of error I guess. Best, Bogdan _______________________________________________ eLua-dev mailing list [hidden email] https://lists.berlios.de/mailman/listinfo/elua-dev |
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I remember looking at this at some time in the past since CodeSourcery
(which maintains the ARM GCC port) uses qemu for some of its automated testing suites. I never got to the stage where I had working configuration though. I would be interested in any details you have on how you did your build and command line options if you get this to a working state. Note: the emulator, I believe, emulates _some_ of the peripheral features of the device, but might not emulate all. You may be encountering issues due to eLua trying to init some of these facilities on startup. As Bogdan points out however looking at the program counter and a dump might be the most useful way to figure out where it has failed. On Mon, Nov 8, 2010 at 8:03 AM, Bogdan Marinescu <[hidden email]> wrote: > On Mon, Nov 8, 2010 at 3:48 PM, Marcelo Politzer <[hidden email]> wrote: >> Hello eLuers, >> I've recently found out that qemu is able to simulate the lm3s6965evb which >> is compatible with eLua ( did any one knew? good news huh? :) ). > > Never tried it, I actually didn't know that qemu emulates something > else than x86. Good to know :) > >> But i've got into a little problem, After removing some examples from >> SConstruct ( wasn't fitting when building codesourcery ). I've tried running >> qemu like this: >> `qemu-system-arm -M lm3s6965evb -kernel elua_lua_lm3s6965.bin' >> qemu: hardware error: ssys_read: Bad offset 0x70 >> CPU #0: >> R00=01c00380 R01=400fe060 R02=400fe070 R03=078e3ac0 >> R04=01c00380 R05=00000000 R06=00000000 R07=00000000 >> R08=00000000 R09=00000000 R10=00000000 R11=00000000 >> R12=00000000 R13=2000ffb0 R14=00004101 R15=00004402 >> PSR=20000173 --C- T svc32 >> Aborted >> Any one have ever tried this? Does it work? Does it worth trying? > > Did you try disassembling the elf file (arm-none-eabi-objdump -d > elua_lua_lm3s6965.elf) and see where the actualy error is (PC equals > 0x4402, as shown above, so it can easily identify the error location). > I have a feeling that while qemu might emulate the CPU just fine, it > most likely have issues with peripheral emulation. This is just of the > many possible causes of error I guess. > > Best, > Bogdan > _______________________________________________ > eLua-dev mailing list > [hidden email] > https://lists.berlios.de/mailman/listinfo/elua-dev > -- James Snyder Biomedical Engineering Northwestern University [hidden email] PGP: http://fanplastic.org/key.txt Phone: (847) 448-0386 _______________________________________________ eLua-dev mailing list [hidden email] https://lists.berlios.de/mailman/listinfo/elua-dev |
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2010/11/9 James Snyder <[hidden email]> I've folowed this tutorial and got a hello world on my "screen".I remember looking at this at some time in the past since CodeSourcery I won't be able to work on this until next week because of the end of period at my university.
Best, Marcelo _______________________________________________ eLua-dev mailing list [hidden email] https://lists.berlios.de/mailman/listinfo/elua-dev |
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2010/11/10 Marcelo Politzer <[hidden email]> I gave the wrong link, this is the one about qemu
Best, Marcelo
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