A simple test to validate instructions specific to the IBM PPE42 processor
To build the code, you will first need to install the PPE42 GCC compiler and binutils. It appears that this was never upstreamed, but it is available in a public Github repo here: https://github.com/open-power/ppe42-gcc
The ppe42-tests Makefile expects gcc and the binutils to be installed in the same directory that contains the ppe42-tests repo. So, if your ppe42-tests repo is in /home/foo/repos then it expects that gcc and the binutils exist at /home/foo/repos/tools/ppetools/prod/bin/. However, this can be overridden with the TOOLS_PREFIX environment variable.
Once you have GCC and binutils installed, you should be able to cd into the ppe42-tests repo and run make. This will create a ppe42-test.out file in the ./build directory.
NOTE: A prebuilt image is provided in the ./images directory.
Assuming you have a version of QEMU that supports running the ppe42_machine, you should be able to load the code and run it using the following QEMU command line:
qemu-system-ppc -nographic -machine ppe42_machine -device loader,file=./ppe42-test.out -device loader,addr=0xfff80040,cpu-num=0
Currently, ppe42_machine does not support any kind of console output. If the test code detects a failure, it will execute a trap instruction, which will cause QEMU to "checkstop" and dump all register contents. Currently, this is the only indication that the test failed. If the test succeeds, you will not see any failure output.