circuitpython/ports/stm/supervisor
Christian Walther c7404a3ff8 Add movable allocation system.
This allows calls to `allocate_memory()` while the VM is running, it will then allocate from the GC heap (unless there is a suitable hole among the supervisor allocations), and when the VM exits and the GC heap is freed, the allocation will be moved to the bottom of the former GC heap and transformed into a proper supervisor allocation. Existing movable allocations will also be moved to defragment the supervisor heap and ensure that the next VM run gets as much memory as possible for the GC heap.

By itself this breaks terminalio because it violates the assumption that supervisor_display_move_memory() still has access to an undisturbed heap to copy the tilegrid from. It will work in many cases, but if you're unlucky you will get garbled terminal contents after exiting from the vm run that created the display. This will be fixed in the following commit, which is separate to simplify review.
2020-11-28 17:50:23 +01:00
..
cpu.s create copy 2020-03-11 18:13:06 -04:00
internal_flash.c Add more "extern" declarations for gcc10 compat 2020-08-21 14:39:37 -05:00
internal_flash.h Fix NVM by clearing FLASH_FLAG_PGPERR 2020-11-23 00:25:41 -08:00
internal_flash_root_pointers.h create copy 2020-03-11 18:13:06 -04:00
port.c Add movable allocation system. 2020-11-28 17:50:23 +01:00
qspi_flash.c create copy 2020-03-11 18:13:06 -04:00
serial.c Fix up end of file and trailing whitespace. 2020-06-03 10:56:35 +01:00
usb.c Claim USB pins at startup to prevent overwrites 2020-07-22 14:22:05 -04:00