Semaphores in eldk4.1
Stuart Hodgson
stuart at quadrics.com
Sat Dec 1 03:33:30 EST 2007
Hi,
I have been suing the eldk4.1 tool chain for a few months now and have
not not encountered any problems with building until now. I build for
two slightly different archs, ppc_85xx and ppx_82xx.
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.
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
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.
I also can not find anything stating that these functions are not
implemented for the 82xx arch compared with others for the eldk4.1
Thanks
Stuart
More information about the Linuxppc-embedded
mailing list