RISC-V/HiFive memory limitations

[Denis Obrezkov]

2017-06-23 21:03 GMT+02:00 Denis Obrezkov <denisobrezkov at gmail.com>:

> 2017-06-23 20:16 GMT+02:00 Denis Obrezkov <denisobrezkov at gmail.com>:
>
>> 2017-06-23 16:39 GMT+02:00 Joel Sherrill <joel at rtems.org>:
>>
>>>
>>>
>>> On Jun 23, 2017 9:29 AM, "Gedare Bloom" <gedare at rtems.org> wrote:
>>>
>>> On Thu, Jun 22, 2017 at 8:32 PM, Denis Obrezkov <denisobrezkov at gmail.com>
>>> wrote:
>>> >> Ok, then I will try to adapt the default linkcmd file today.
>>> >>
>>> >> --
>>> >> Regards, Denis Obrezkov
>>> >
>>> >
>>> > Hello all,
>>> > It seems that data section wasn't copied from ROM, so I've added the
>>> > initialization code
>>> > and now I have a proper value. Thus, I can proceed further to new
>>> errors.
>>> >
>>> > I haven't started to develop new linkcmd file, general for the
>>> architecture
>>> > + specific
>>> > for the BSP. Should I? Hesham?
>>> >
>>> You may want to just get it working first, and then refactor the
>>> linkcmds.
>>>
>>>
>>> +1 just make sure it is working when you start doing this. :)
>>>
>>>
>>> > Also, I have a question:
>>> > there is a section called 'rwbarrier' and it is placed in data. Should
>>> it be
>>> > also initialized?
>>> > (copied from rom)
>>> Everything up to the bss probably should be copied from ROM.
>>>
>>>
>>> Agreed. Is there a crt0 in libgloss for this architecture to check
>>> against?
>>>
>>> Just remember that the order and layout of sections may have implicit
>>> ties to the code in the startup.
>>>
>>>
>>> > And is it possible to decrease a required memory amount by restricting
>>> a
>>> > user to C language usage?
>>> > (no C++ sections in linkcmd)
>>> >
>>> I don't think so. They shouldn't really be having an impact anyway
>>> except for C++ applications.
>>>
>>>
>>> All you end up with is a loop to iterate over the list of empty global
>>> constructors.
>>>
>>>
>>> >
>>> > --
>>> > Regards, Denis Obrezkov
>>> >
>>> > _______________________________________________
>>> > devel mailing list
>>> > devel at rtems.org
>>> > http://lists.rtems.org/mailman/listinfo/devel
>>>
>>>
>>> I have a little question: is there any connection between RTEMS linker
files
and example-v2 applications' linker files?
I think I have a similar mistake there: .data section is not initialized.



-- 
Regards, Denis Obrezkov
-------------- next part --------------
An HTML attachment was scrubbed...
URL: <http://lists.rtems.org/pipermail/devel/attachments/20170625/553134ea/attachment-0002.html>