Sean Young 098585234d Add return data implementation
This consists of:
 - syscalls
 - passing return data from invoked to invoker
 - printing to stable log
 - rust and C SDK changes
2021-09-10 14:25:54 +01:00
..
2021-09-10 14:25:54 +01:00
2021-08-10 07:21:14 +00:00