mp application for powerpc-psim does not work!

[Joel Sherrill]

Bert wrote:
> 
> Hi, i have installed RTEMS for powerpc-psim,
> and configured it with the option
> --enable-multiprocessing. i want to run a
> mp application with two nodes on psim,
> but failed. Here is what i have done:
> 
> # powerpc-rtems-gdb base_mp-node1.exe
> (gdb) tar sim -f fsim
> (gdb) load
> (gdb) run
> Starting program:/tmp/base_mp/node1/base_mp-node1.exe
> core_find_mapping() - access to unmaped address, attach a default map to handle this - addr=0xc0000000 nr_bytes=0x4 processor=0x40250008 cia=0x16ca0
> ......
> # powerpc-rtems-gdb base_mp-node2.exe
> (gdb) tar sim -f fsim
> (gdb) load
> (gdb) run
> Starting program:/tmp/base_mp/node2/base_mp-node2.exe
> core_find_mapping() - access to unmaped address, attach a default map to handle this - addr=0xc0000040 nr_bytes=0x4 processor=0x40250008 cia=0x2184
> ......
> 
> and what in the file "fsim" is as following:
> /#address-cells 2
> /openprom/options/oea-memory-size 8388608
> 
> Is there anything i have done wrong? What should i do to make the application work perfect?

See the script c/src/lib/libbsp/powerpc/psim/tools/psim.  It has these
lines commented out:

# echo "/shm at 0xc0000000/reg 0xc0000000 0x10000"         >> ${TREE_FILE}
# echo "/shm at 0xc0000000/key ${RTEMS_SHM_KEY}"           >> ${TREE_FILE}
# echo "/sem at 0xc0010000/reg 0xc0010000 12"              >> ${TREE_FILE}
# echo "/sem at 0xc0010000/key ${RTEMS_SHM_SEMAPHORE_KEY}" >> ${TREE_FILE}
# echo "/sem at 0xc0010000/value -1"                       >> ${TREE_FILE}

You need those device options in your configuration tree.

The RTEMS_SHM_KEY and RTEMS_SHM_SEMAPHORE_KEY correspond to System V
IPC keys since that is how the shared memory and mutex on the shm
are implemented.

> Thanks in advance !!!
> ----------------------------------------------
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-- 
Joel Sherrill, Ph.D.             Director of Research & Development
joel at OARcorp.com                 On-Line Applications Research
Ask me about RTEMS: a free RTOS  Huntsville AL 35805
Support Available                (256) 722-9985