Semaphores in eldk4.1

[Wolfgang Denk]

In message <47503B5A.6090604 at quadrics.com> you wrote:
> 
> I have been suing the eldk4.1 tool chain for a few months now and have 

Please post ELDK related questions on the ELDK mailing list instead,
see http://lists.denx.de/mailman/listinfo/eldk

> The problem I have come up against is related to some of the semaphore 
> functions in semaphore.h, namely sem_wait, sem_post. This was originally 
> noticed in a third party driver I am porting from one board to another 
--------------------------^^^^^^^^
> but a small test program has shown the same results.

What exactly are you talking about? Device driver (i. e. kernel)
code, or application (i. e. user space) code ?

> Calls to these functions on the ppc_82xx platform return -1 with an 
> error code of 38, in this case meaning  ENOSYS (not implemented). On the 

Did you enable the CONFIG_SYSVIPC option in your Linux kernel
configuration?

> ppc_85xx the same program executes fine, thus I conclude that it is 
> specific to the libc-2.3.5 for ppc_82xx. Has anyone else come across 
> this problem, I did find one thread but there was no conclusion listed.

There is absolutley no difference between ppc_85xx and ppc_82xx as
far as library sources or configuration are concerned. The problem is
most probably in your Linux kernel, I guess.

> I also can not find anything stating that these functions are not 
> implemented for the 82xx arch compared with others for the eldk4.1

Provide a test program that fails for yuou, and we can provide much
better comments.

But please post followups on the ELDK mailing list.

Best regards,

Wolfgang Denk

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