SPARC linker command files

[Sebastian Huber]

On 2013-12-05 22:57, Jiri Gaisler wrote:
>
>
> On 12/03/2013 11:29 AM, Sebastian Huber wrote:
>> On 2013-12-03 10:13, Jiri Gaisler wrote:
>>>
>>> On 12/03/2013 08:46 AM, Sebastian Huber wrote:
>>>>> On 2013-12-02 23:06, Jiri Gaisler wrote:
>>>>>>>
>>>>>>> On 11/30/2013 02:31 AM, Gedare Bloom wrote:
>>>>>>>>>>> Does the NGMP allow for variant sizes of ROM and RAM? If so will we
>>>>>>>>>>> provide separate BSP variants for all possibilities, or how does the
>>>>>>>>>>> user select the right size for their board?
>>>>>>> The boot loader (or gdb debug monitor) supplies the top-of-stack
>>>>>>> address in %sp when the RTEMS binary is called. The area between
>>>>>>> the start address and %sp indicates the size of RAM to be used.
>>>>>>> In this way only one bsp is needed.
>>>>>
>>>>> Ok, good to know.  Then this symbols should probably go away.  Is the boot loader always the same?
>>>
>>> The most common loader is generated by the mkprom2 PROM builder. The loader
>>> sets up system specific things like memory controllers, timers and UARTs.
>>> It the calls the RTEMS (or other eg. linux) binary with the top-of-RAM
>>> in %sp.
>>>
>>> The simulator (TSIM) and grmon debug monitor does the same thing as
>>> the loader before launching the binary.
>>
>> The startup code also assumes a valid stack pointer for CPU0.  So what is the purpose of the global symbols?  Why not use the boot loader provided values we already rely on?
>>
>
> Which exact symbols do you mean? The ones in the link script, or others?
> Note that the erc32 bsp is bit special since we could debug it using a gdb
> stub, and the needed some way of passing parameters from the stub to the
> kernel....

I mean the symbols mentioned here:

http://www.rtems.org/pipermail/rtems-devel/2013-November/005041.html

-- 
Sebastian Huber, embedded brains GmbH

Address : Dornierstr. 4, D-82178 Puchheim, Germany
Phone   : +49 89 189 47 41-16
Fax     : +49 89 189 47 41-09
E-Mail  : sebastian.huber at embedded-brains.de
PGP     : Public key available on request.

Diese Nachricht ist keine geschäftliche Mitteilung im Sinne des EHUG.