Re: lm32 simulator configuration file question

Joel Sherrill
2015-04-04T00:00:29Z

On 04/03/2015 06:21 PM, Mike Frysinger wrote:
> On 03 Apr 2015 15:21, Joel Sherrill wrote:
>> On 4/2/2015 8:41 PM, Mike Frysinger wrote:
>>> On 02 Apr 2015 17:19, Joel Sherrill wrote:
>>>> RTEMS has a BSP for the lm32 which runs on the simulator in gdb.
>>>> Based on our wrapper scripts and READMEs, this is how the simulator
>>>> is invoked in gdb:
>>>>
>>>> tar sim --hw-device lm32cpu \
>>>> --hw-device "lm32uart/reg 0x80006000 0x100" \
>>>> --hw-device "/lm32uart> int int0 /lm32cpu" \
>>>> --hw-device "lm32timer/reg 0x80002000 0x80" \
>>>> --hw-device "/lm32timer> int int1 /lm32cpu" \
>>>> --memory-region 0x08000000,0x4000000
>>> you can pass --hw-file to target sim too
>> Thank you. I updated the file to this:
>>
>> =======================
>> /lm32cpu
>> /lm32uart@0x80006000/reg 0x80006000 0x100
>> /lm32uart> int int0 /lm32cpu
>> /lm32timer@0x80002000/reg 0x80002000 0x80
>> /lm32timer> int int1 /lm32cpu
>> =======================
>>
>> And that works with gdb using the tar sim command below.
>>
>> tar sim --hw-file lm32_evr.conf --memory-region 0x08000000,0x4000000
>>
>> But nothing comes out from the same executable using run
>>
>> lm32-rtems4.11-run --hw-file lm32_evr.conf --memory-region
>> 0x08000000,0x4000000 .hello.exe
>>
>> Does that make any sense to you?
> honestly, i know nothing about the lm32 arch. it has no testsuite, and i have
> no idea how to make example programs. so i can't really explain why it might
> not be working. with Blackfin, i use a leading slash on everything and it
> works for me.
>
sigh.. no testsuite. :(

Just to be clear, the simulator works when I invoke it inside
gdb. Just not via run. I am guessing some glue isn't right.
> could i convince you to write a simple hello world program ? first one that'd
> run in the virtual environment, and the one that'd setup& write to the serial
> port ? that way we could check the .s files into the testsuite dir, and i could
> try poking around the models.
>
I will build an lm32-elf toolset and throw that together. I am travelling
next week so it may be slow to happen since I am no expert at lm32
assembly language. But a hello world shouldn't be a problem.
> if the latest version isn't working, you could try grabbing previous releases of
> gdb and building the sim for that.
I tried a couple of older gdb's I had laying around. They behaved the
same. Not sure how far I would have to go back.
> -mike

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-- Joel Sherrill
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