RES: Minimum Size of a RTEMS SPARC Application Image

[Fabrício de Novaes Kucinskis]

Joel,


Thank you for the explanation - again; now I owe you two or three beers for
the help (and a lot for RTEMS)!
Best regards,


Fabrício.


-----Mensagem original-----
De: Joel Sherrill [mailto:joel.sherrill at oarcorp.com]
Enviada em: segunda-feira, 14 de agosto de 2006 12:57
Para: Fabrício de Novaes Kucinskis
Cc: RTEMS - Mailing List
Assunto: Re: Minimum Size of a RTEMS SPARC Application Image


Fabrício de Novaes Kucinskis wrote:
> Hello all,
>
>
> I need to know what is the minimum size of an RTEMS application to the
ERC32
> BSP.
>
> In the "SPARC Applications Supplement", page 25, it is said that the
minimum
> RTEMS configuration generates an image of 28,288 bytes. However, in my
> tests, the minimum size I got to an application with no optional managers
> was about 100,000 bytes .
>
> (no stdio or other library, and no "user application" at all - just
> "shutdown executive" in the Init task)
>
> Am I doing something wrong or the documentation is not correct?
>

A bit of both.  The size documentation has not been updated recently.  And
that number doesn't include anything besides RTEMS proper for the version
of RTEMS it was generated against.

It does not include: BSP init/shutdown, malloc and libc initialization
or any
device drivers, filesystem infrastructure, etc.

It also depends on what you have enabled.  The last sparc-sis build I
did on the
head has 94,256 bytes in the text segment according to size.
> Thanks in advance and best regards,
>
>
> Fabrício de Novaes Kucinskis - DEA / INPE
> -----------------------------------------
> Grupo de Supervisão de Bordo - SUBORD
> Divisão de Eletrônica Aeroespacial
> Instituto Nacional de Pesquisas Espaciais
>
>