On Wed, 24 Aug 2011, Philipp Meier wrote:

> Hi all
> 
> I have a firmware split into two parts:
>  1. a "bootloader"
>  2. a "application"
> 
> I now need to move from Windows (cygwin) development environment to
> Linux development environment and at the same time use the current
> ecos version (i.e. what I get when I clone the ecos mercurial
> repository) instead of the "original" (back in 2009) ecos-3.0 version.
> 
> The situation is now as follows:
>  1. I download (to my stm32 device) the Linux/ecos-current built
>  "bootloader"
>  2. I download (to my stm32 device) the Linux/ecos-current built
>  "application"
>  3. I start the application and in line 187 of file
>  'hal/cortexm/arch/current/src/hal_msic.c' instead of branching to
>  'hal_switch_state_vsr' it branches to 'hal_default_exception_vsr'
>  function!
> 
> To analyze the problem I then:
>  4. Downloaded (to my stm32 device) the cyginw/ecos-3.0 built
>  "bootloader"
>  5. Still having the Linux/ecos-current built "application"
>  6. And in line 187 (of the above mentioned file) it branches (as it
>  should) to 'hal_switch_state_vsr' and the application is starting up
>  and running fine!
> 
> Who can give me a hint about
>  * what has been changed in ecos-current cortexm stm32 that could
>  cause this problem

Hi Philipp,

I think you can use Mercurial for that

% hg tags | grep v3
ecos-v3_0-branchpoint           2821:b5a12bb6a634

% hg log -r ecos-v3_0-branchpoint:tip packages/hal/cortexm/arch | less -FRSX

or (may be)

% hg log --patch -r ecos-v3_0-branchpoint:tip \
	packages/hal/cortexm/arch/current/src/hal_misc.c | less -FRSX

etc.

>  * or what else I could analyze to find out why ecos-current (built on
>  Linux, arm-eabi-gcc (eCosCentric GNU tools 4.3.2-sw); under cygwin I
>  also used the arm-eabi-gcc version 4.3.2 pre-built by eCosCentric)
 
Also you would check the Linux build for ecos-3.0 codebase

# get old (working) code
% hg update ecos-v3_0-branchpoint

Rebuild your loader and application under Linux and try it (use fresh
directories for builds). After all do not forget up-to-date eCos HG
repository (hg update default).

Feel free to submit a bug report (if you'll find something) via eCos
Bugzilla System http://bugs.ecos.sourceware.org/


Sergei

> Regards
> Philipp
> 
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