rtems assembler

[Hesham Almatary]

On Thu, 30 Apr 2020 at 15:56, suyash singh <suyashsingh234 at gmail.com> wrote:

> after adding -v
> https://hastebin.com/epijunegix.coffeescript
>
> with sparc-unknown-elf
> https://hastebin.com/ijohidofus.coffeescript
>
> (target getting an extra unknown for some reason)
>
> riscv64-unknown-elf
> https://hastebin.com/jirusidoti.sql
>  different error: unknown register name (maybe because erc32 bsp with
> riscv)
>
Yes, you need to run that on an RTEMS riscv BSP and not sparc sources


>
> On Thu, Apr 30, 2020 at 8:08 PM Hesham Almatary <heshamelmatary at gmail.com>
> wrote:
>
>>
>>
>> On Thu, 30 Apr 2020 at 15:21, suyash singh <suyashsingh234 at gmail.com>
>> wrote:
>>
>>> I think it doesn't support sparc backend although it does not give
>>> unknown target error.
>>>
>>> I compiled this c program with
>>> export PATH=$HOME/quick-start/rtems/5/bin:"$PATH"
>>>  clang -target sparc-unknown-rtems5 test1.c
>>>
>> Can you add -v to that command and post the output? Also try with
>> sparc-unknown-elf. Last thing to try is to do the same for
>> riscv64-unknown-elf
>>
>>>
>>> *test1.c*
>>> int main(int argc, char **argv) {
>>>   int k = 0x7fffffff;
>>>   k += argc;
>>>   return 0;
>>> }
>>>
>>> same error
>>> /usr/bin/as: unrecognized option '-Av8'
>>> clang-11: error: assembler command failed with exit code 1
>>>
>>> If i write
>>> clang -target hello test1.c
>>> error: unknown target triple 'hello', please use -triple or -arch
>>>
>>> So I guess it is detecting sparc but not working with it
>>>
>>> On Thu, Apr 30, 2020 at 7:07 PM Hesham Almatary <
>>> heshamelmatary at gmail.com> wrote:
>>>
>>>>
>>>>
>>>> On Thu, 30 Apr 2020 at 14:18, suyash singh <suyashsingh234 at gmail.com>
>>>> wrote:
>>>>
>>>>>
>>>>> I am using ubuntu 18.04 terminal
>>>>>
>>>>> Here's the python script I wrote to find all include files and run
>>>>> clang -fsanitize
>>>>>
>>>>> # run with python3 in terminal
>>>>>
>>>>> import subprocess
>>>>> import os
>>>>>
>>>>> relativedir="../bsps/sparc/erc32/btimer"
>>>>> directory=os.path.join(os.getcwd(),"../")
>>>>> file="btimer.c"
>>>>> root_dir="ubsan"
>>>>>
>>>>> arr=['clang','-target','sparc','-
>>>>>
>>>> target needs to be sparc-unknown-rtems5 to pick up the correct tools.
>>>> Does your clang support sparc backend? Can you try to compile and link some
>>>> simple C program with it?
>>>>
>>>>
>>>>> fsanitize=undefined',"-I../../../../../../rtems/5/sparc-rtems5/erc32/lib/include","-I../../../../../../rtems/5/sparc-rtems5/include/"]
>>>>>
>>>>> for path, subdirs, files in os.walk(directory):
>>>>>         for subdir in subdirs:
>>>>>             if(subdir=="include"):
>>>>>                 includepath=os.path.join(path,subdir)
>>>>>                 idx=includepath.find("..")
>>>>>                 arr.append("-I../../../../"+includepath[idx+3:])
>>>>> arr.append(file)
>>>>> subprocess.run(arr,cwd=relativedir, stdout=subprocess.PIPE)
>>>>> #result=subprocess.run(['./a.out'],cwd=relativedir,
>>>>> stdout=subprocess.PIPE)
>>>>>
>>>>> On Thu, Apr 30, 2020 at 6:44 PM Hesham Almatary <
>>>>> heshamelmatary at gmail.com> wrote:
>>>>>
>>>>>>
>>>>>>
>>>>>> On Thu, 30 Apr 2020 at 13:51, Joel Sherrill <joel at rtems.org> wrote:
>>>>>>
>>>>>>>
>>>>>>>
>>>>>>> On Thu, Apr 30, 2020 at 7:34 AM suyash singh <
>>>>>>> suyashsingh234 at gmail.com> wrote:
>>>>>>>
>>>>>>>> Hello,
>>>>>>>> I was running clang UBSan on
>>>>>>>> bsps/sparc/erc32/btimer/btimer.c
>>>>>>>>
>>>>>>>> and got error
>>>>>>>>
>>>>>>>> /usr/bin/as: unrecognized option '-Av8'
>>>>>>>> clang-11: error: assembler command failed with exit code 1
>>>>>>>>
>>>>>>>> I am not sure but is it because clang is using wrong assembler?
>>>>>>>>
>>>>>>>
>>>>>>> I haven't seen anyone run into this in a long time. :)
>>>>>>>
>>>>>>> In this case, it is likely one of two things:
>>>>>>>
>>>>>>> + Look at your $PATH. Make sure the RTEMS tools are first.
>>>>>>>
>>>>>>> + But in your case, I expect that it is because the clang didn't
>>>>>>> know (somehow) to put the target name in front of the as.
>>>>>>> Did you invoke it for sparc-rtems5? If so, then there is a
>>>>>>> path through clang where it isn't looking at the target name.
>>>>>>>
>>>>>> That’s likely to be the problem. I expect Suyash isn’t cross
>>>>>> compiling with clang.
>>>>>>
>>>>>>
>>>>>>> I also double checked the as manual to ensure -Av8 was in
>>>>>>> fact a sparc option.
>>>>>>>
>>>>>>> --joel
>>>>>>>
>>>>>>>>
>>>>>>>>
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>>>>>>>> devel at rtems.org
>>>>>>>> http://lists.rtems.org/mailman/listinfo/devel
>>>>>>>
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>>>>>>
>>>>>> --
>>>>>> Hesham
>>>>>> _______________________________________________
>>>>>> devel mailing list
>>>>>> devel at rtems.org
>>>>>> http://lists.rtems.org/mailman/listinfo/devel
>>>>>
>>>>> --
>>>> Hesham
>>>>
>>> --
>> Hesham
>>
> --
Hesham
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