1df86516e0
This commit performs the necessary changes to handle an additional RV32 CPU extension flag, for the Zcmp extension in this case. The changes are not limited to RV32-only code, as other parts of the tooling need to be modified for this: the testing framework has to be made aware that an extra bit can be set in sys.implementation._mpy and needs to know how it is called, and "mpy-cross" must be able to actually set that flag bit in the first place via the appropriate command line argument. Signed-off-by: Alessandro Gatti <a.gatti@frob.it>
MicroPython cross compiler
This directory contains the MicroPython cross compiler, which runs under any Unix-like system and compiles .py scripts into .mpy files.
Build it as usual:
$ make
The compiler is called mpy-cross. Invoke it as:
$ ./mpy-cross foo.py
This will create a file foo.mpy which can then be copied to a place accessible
by the target MicroPython runtime (eg onto a pyboard's filesystem), and then
imported like any other Python module using import foo.
Different target runtimes may require a different format of the compiled bytecode, and such options can be passed to the cross compiler.
If the Python code contains @native or @viper annotations, then you must
specify -march to match the target architecture.
Run ./mpy-cross -h to get a full list of options.
The optimisation level is 0 by default. Optimisation levels are detailed in https://docs.micropython.org/en/latest/library/micropython.html#micropython.opt_level