This commit fixes
https://github.com/zephyrproject-rtos/zephyr/issues/5008.
It does so by splitting up gen_syscalls.py into two scripts with a
json metadata file to communicate syscall metadata between them. The
parsing script parses header files from include/ and writes syscall
metadata to a file if the contents changed. The generation script
reads from the json file and generates syscall code.
The build system DAG now looks like this:
always_rebuild -> json -> syscalls -> offset.o
The script for generating json will do so only if the content changes,
this ensures that the entire DAG does not always do a full rebuild.
Signed-off-by: Sebastian Bøe <sebastian.boe@nordicsemi.no>
This gives more detail on how system calls with large argument
lists, or large return value types should be handled.
Signed-off-by: Andrew Boie <andrew.p.boie@intel.com>
This initial batch of documentation describes policies and
mechanism related to kernel objects and system calls.
Some details on porting user mode to a new arch have been
provided in the architecture porting guide.
Thread documentation updated with some user mode consideration.
This is not the final documentation, more to come in subsequent
patches.
Signed-off-by: Andrew Boie <andrew.p.boie@intel.com>
Sebastian Bøe