RTEMS toolchain for Epiphany?

[Hesham Moustafa]

Hi,

Thanks a lot for the patches. I will let you know with the status.
One thing I want someone to confirm about is that I will not be
able to use/copy any of the GPL licensed code there [1], right?

[1] https://github.com/adapteva/epiphany-libs

Regards,
Hesham

On Thu Nov 13 2014 at 6:47:28 PM Joel Sherrill <joel.sherrill at oarcorp.com>
wrote:

>  Hi
>
> I couldn't get gdb og gcc to build even for epiphany-elf but I did
> include patch that I think is all that is needed for RTEMS.
>
> I did manage to build binutils from their repo for both elf
> and rtems variants.
>
> At least it is a starting point. You can work with their
> community to get their tools built as epiphany-elf and
> then just change the target.
>
>
> --joel
>
>
> On 11/13/2014 12:22 PM, Hesham Moustafa wrote:
>
>
>
> On Thu Nov 13 2014 at 5:58:25 PM Joel Sherrill <joel.sherrill at oarcorp.com>
> wrote:
>
>>
>>
>> On November 13, 2014 11:56:32 AM CST, Hesham Moustafa <
>> heshamelmatary at gmail.com> wrote:
>> >Hi,
>> >
>> >
>> >I want to let you know that I found their main repos [1] Can I start
>> >from there? Imitating what has been done with OpenRISC?
>> >
>>
>> Basically. Except you only need their repos for binutils and gdb. We use
>> GCC and Newlib from upstream.
>>
>>  Great, I am waiting for these patches.
>
>> I have binutils patches
>>
>> >[1] https://github.com/adapteva
>> >
>> >
>> >Regards,
>> >
>> >Hesham
>> >
>> >On Thu Nov 13 2014 at 3:29:14 PM Hesham Moustafa
>> ><heshamelmatary at gmail.com> wrote:
>> >
>> >On Thu Nov 13 2014 at 2:59:33 PM Joel Sherrill
>> ><joel.sherrill at oarcorp.com> wrote:
>> >
>> >
>> >On 11/13/2014 8:07 AM, Joel Sherrill wrote:
>> >>
>> >> On November 13, 2014 6:30:48 AM CST, Hesham Moustafa
>> ><heshamelmatary at gmail.com> wrote:
>> >>> Hi all,
>> >>>
>> >>>
>> >>> I want to ask about the status of RTEMS toolchain for Epiphany
>> >>> architecture. I think Joel mentioned that there are some previous
>> >>> support for it; and if yes, does the toolchain need some additional
>> >>> work?
>> >> To give you a quick answer, I emailed the people who did the port.
>> >There apparently is a github repo with some of it and some is merged. I
>> >will dig through the emails and post the proper links.
>> >>
>> >> One issue they mentioned was that the gdb port had many core/thread
>> >support that made it more than a simple port.
>> >From Jeremy Bennett:
>> >
>> >> piphany tool chain development runs on quite a tight budget, and its
>> >> GDB implementation is quite complex (it has to pretend cores are
>> >> threads, when they don't completely share an address space).  So we
>> >> haven't had the effort to devote to upstreaming.  And we were
>> >> reluctant to push the simulator upstream without a GDB implementation
>> >> to go with it.  You can of course access the code here:
>> >>
>> >>   https://github.com/adapteva/epiphany-binutils-gdb
>> >>
>> >> Epiphany GDB is still in quite substantial flux, due to the need to
>> >> support the Eclipse multicore visualizer with asynchronous and
>> >> non-stop support.
>> >The upstream gcc and newlib are OK. But since binutils and gdb are
>> >now in a single repo, it will need to come from the github site until
>> >it is merged upstream. And obviously patches just need to go upstream
>> >to whereever the code is. :)
>> >
>> >Jeremy also encouraged you to openly discuss things on their forums.
>> >He thought you would get good insight and advice there. And I don't
>> >doubt that.
>> >
>> >Thank you, I will.
>> >
>> >If it is a relatively low volume place, I may track it. But my email
>> >volume
>> >is already high and I don't have time to poke around on a bulletin
>> >board.
>> >
>> >> It will not have RTEMS as a target but that shouldn't be hard to
>> >address once we know where the master binutils, GCC, Newlib, and gdb
>> >are.
>> >So do you want me to try to build a toolchain and get you some starting
>> >patches?
>> >
>> >Sure that will definitely help as a starting point. And if you are so
>> >busy, you can just drop me HOWTO  instructions.
>> >
>> >> Then you are porting.
>> >>
>> >>> Regards,
>> >>>
>> >>> Hesham
>> >> _______________________________________________
>> >> devel mailing list
>> >> devel at rtems.org
>> >> http://lists.rtems.org/mailman/listinfo/devel
>> >
>> >--
>> >Joel Sherrill, Ph.D.             Director of Research & Development
>> >joel.sherrill at OARcorp.com        On-Line Applications Research
>> >Ask me about RTEMS: a free RTOS  Huntsville AL 35805
>> >Support Available                (256) 722-9985
>>
>>
> --
> Joel Sherrill, Ph.D.             Director of Research & Developmentjoel.sherrill at OARcorp.com        On-Line Applications Research
> Ask me about RTEMS: a free RTOS  Huntsville AL 35805
> Support Available                (256) 722-9985
>
>
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