RTEMS toolchain for Epiphany?

[Joel Sherrill]

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. 

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?
> Then you are porting.
>
>> Regards,
>>
>> Hesham 
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-- 
Joel Sherrill, Ph.D.             Director of Research & Development
joel.sherrill at OARcorp.com        On-Line Applications Research
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