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Damien George 9883d8e818 py/persistentcode: Maintain root ptr list of imported native .mpy code. 
On ports where normal heap memory can contain executable code (eg ARM-based
ports such as stm32), native code loaded from an .mpy file may be reclaimed
by the GC because there's no reference to the very start of the native
machine code block that is reachable from root pointers (only pointers to
internal parts of the machine code block are reachable, but that doesn't
help the GC find the memory).

This commit fixes this issue by maintaining an explicit list of root
pointers pointing to native code that is loaded from an .mpy file.  This
is not needed for all ports so is selectable by the new configuration
option MICROPY_PERSISTENT_CODE_TRACK_RELOC_CODE.  It's enabled by default
if a port does not specify any special functions to allocate or commit
executable memory.

A test is included to test that native code loaded from an .mpy file does
not get reclaimed by the GC.

Fixes #6045.

Signed-off-by: Damien George <damien@micropython.org>
 		2020-08-02 22:34:09 +10:00
..
const.py tests: Format all Python code with black, except tests in basics subdir. 2020-03-30 13:21:58 +11:00
const.py.exp py/parse: Treat constants that start with underscore as private. 2016-06-06 17:28:32 +01:00
const2.py tests: Format all Python code with black, except tests in basics subdir. 2020-03-30 13:21:58 +11:00
const2.py.exp tests/micropython: Add tests for const names being replaced in parser. 2016-09-27 13:03:53 +10:00
const_error.py py/parse: Support constant folding of power operator for integers. 2020-05-03 16:23:19 +10:00
const_error.py.exp py/parse: Remove unnecessary check in const folding for ** operator. 2020-04-09 16:02:39 +10:00
const_intbig.py tests: Format all Python code with black, except tests in basics subdir. 2020-03-30 13:21:58 +11:00
const_intbig.py.exp tests/micropython: Add test for consts that are bignums. 2017-02-24 13:08:18 +11:00
decorator.py tests: Format all Python code with black, except tests in basics subdir. 2020-03-30 13:21:58 +11:00
decorator.py.exp tests: Add tests for things that are not already tested. 2015-03-12 22:48:45 +00:00
decorator_error.py tests: Format all Python code with black, except tests in basics subdir. 2020-03-30 13:21:58 +11:00
decorator_error.py.exp tests: Add tests for SyntaxError, TypeError, and other missing things. 2015-03-25 23:10:09 +00:00
emg_exc.py tests: Format all Python code with black, except tests in basics subdir. 2020-03-30 13:21:58 +11:00
emg_exc.py.exp tests: Format all Python code with black, except tests in basics subdir. 2020-03-30 13:21:58 +11:00
extreme_exc.py tests: Format all Python code with black, except tests in basics subdir. 2020-03-30 13:21:58 +11:00
extreme_exc.py.exp tests/micropython/extreme_exc.py: Allow to run without any emg exc buf. 2018-04-05 03:03:16 +10:00
heap_lock.py tests: Format all Python code with black, except tests in basics subdir. 2020-03-30 13:21:58 +11:00
heap_lock.py.exp py/modmicropython: Add heap_locked function to test state of heap. 2020-03-11 16:54:16 +11:00
heap_locked.py py/modmicropython: Add heap_locked function to test state of heap. 2020-03-11 16:54:16 +11:00
heap_locked.py.exp py/modmicropython: Add heap_locked function to test state of heap. 2020-03-11 16:54:16 +11:00
heapalloc.py tests: Format all Python code with black, except tests in basics subdir. 2020-03-30 13:21:58 +11:00
heapalloc.py.exp tests/micropython: Move alloc-less traceback test to separate test file. 2016-11-21 17:39:23 +11:00
heapalloc_bytesio.py tests: Convert remaining "sys.exit()" to "raise SystemExit". 2017-06-10 20:34:38 +03:00
heapalloc_bytesio.py.exp tests/heapalloc_bytesio: Test for BytesIO with preallocates space. 2017-02-02 00:38:38 +03:00
heapalloc_bytesio2.py tests: Format all Python code with black, except tests in basics subdir. 2020-03-30 13:21:58 +11:00
heapalloc_bytesio2.py.exp py/objstringio: If created from immutable object, follow copy on write policy. 2017-06-09 17:33:01 +03:00
heapalloc_exc_compressed.py py/objexcept: Allow compression of exception message text. 2020-04-05 15:02:06 +10:00
heapalloc_exc_compressed.py.exp py/objexcept: Allow compression of exception message text. 2020-04-05 15:02:06 +10:00
heapalloc_exc_compressed_emg_exc.py py/objexcept: Allow compression of exception message text. 2020-04-05 15:02:06 +10:00
heapalloc_exc_compressed_emg_exc.py.exp py/objexcept: Allow compression of exception message text. 2020-04-05 15:02:06 +10:00
heapalloc_exc_raise.py tests: Format all Python code with black, except tests in basics subdir. 2020-03-30 13:21:58 +11:00
heapalloc_exc_raise.py.exp tests/heapalloc_exc_raise.py: Heap alloc test for raising/catching exc. 2017-02-20 04:22:32 +03:00
heapalloc_fail_bytearray.py tests: Format all Python code with black, except tests in basics subdir. 2020-03-30 13:21:58 +11:00
heapalloc_fail_bytearray.py.exp tests/micropython: Add some tests for failed heap allocation. 2019-04-18 14:34:12 +10:00
heapalloc_fail_dict.py tests: Format all Python code with black, except tests in basics subdir. 2020-03-30 13:21:58 +11:00
heapalloc_fail_dict.py.exp tests/micropython: Add some tests for failed heap allocation. 2019-04-18 14:34:12 +10:00
heapalloc_fail_list.py tests: Format all Python code with black, except tests in basics subdir. 2020-03-30 13:21:58 +11:00
heapalloc_fail_list.py.exp tests/micropython: Add some tests for failed heap allocation. 2019-04-18 14:34:12 +10:00
heapalloc_fail_memoryview.py tests: Format all Python code with black, except tests in basics subdir. 2020-03-30 13:21:58 +11:00
heapalloc_fail_memoryview.py.exp tests/micropython: Add some tests for failed heap allocation. 2019-04-18 14:34:12 +10:00
heapalloc_fail_set.py tests: Format all Python code with black, except tests in basics subdir. 2020-03-30 13:21:58 +11:00
heapalloc_fail_set.py.exp tests/micropython: Add some tests for failed heap allocation. 2019-04-18 14:34:12 +10:00
heapalloc_fail_tuple.py tests: Format all Python code with black, except tests in basics subdir. 2020-03-30 13:21:58 +11:00
heapalloc_fail_tuple.py.exp tests/micropython: Add some tests for failed heap allocation. 2019-04-18 14:34:12 +10:00
heapalloc_inst_call.py tests: Format all Python code with black, except tests in basics subdir. 2020-03-30 13:21:58 +11:00
heapalloc_inst_call.py.exp tests/heapalloc_inst_call: Test for no alloc for simple object calls. 2016-12-25 00:50:27 +03:00
heapalloc_int_from_bytes.py tests/micropython: Add test for int.from_bytes with many zero bytes. 2017-05-06 10:29:09 +10:00
heapalloc_int_from_bytes.py.exp tests/micropython: Add test for int.from_bytes with many zero bytes. 2017-05-06 10:29:09 +10:00
heapalloc_iter.py tests: Format all Python code with black, except tests in basics subdir. 2020-03-30 13:21:58 +11:00
heapalloc_str.py tests/heapalloc_str: Test no-replacement case for str.replace(). 2017-03-22 22:17:52 +03:00
heapalloc_str.py.exp tests/heapalloc_str: Test for alloc-free string operations. 2017-01-27 00:49:39 +03:00
heapalloc_super.py tests: Format all Python code with black, except tests in basics subdir. 2020-03-30 13:21:58 +11:00
heapalloc_super.py.exp tests: Add tests for calling super and loading a method directly. 2017-04-22 23:39:38 +10:00
heapalloc_traceback.py tests: Format all Python code with black, except tests in basics subdir. 2020-03-30 13:21:58 +11:00
heapalloc_traceback.py.exp tests: Format all Python code with black, except tests in basics subdir. 2020-03-30 13:21:58 +11:00
heapalloc_yield_from.py tests: Format all Python code with black, except tests in basics subdir. 2020-03-30 13:21:58 +11:00
heapalloc_yield_from.py.exp tests/micropython: Add test for yield-from while heap is locked. 2019-12-27 12:34:22 +11:00
import_mpy_invalid.py tests/micropython: Improve .mpy import tests to run on more targets. 2020-07-26 22:44:59 +10:00
import_mpy_invalid.py.exp tests: Move .mpy import tests from import/ to micropython/ dir. 2020-07-26 22:04:31 +10:00
import_mpy_native_gc.py py/persistentcode: Maintain root ptr list of imported native .mpy code. 2020-08-02 22:34:09 +10:00
import_mpy_native_gc.py.exp py/persistentcode: Maintain root ptr list of imported native .mpy code. 2020-08-02 22:34:09 +10:00
import_mpy_native_x64.py tests/micropython: Improve .mpy import tests to run on more targets. 2020-07-26 22:44:59 +10:00
import_mpy_native_x64.py.exp tests: Move .mpy import tests from import/ to micropython/ dir. 2020-07-26 22:04:31 +10:00
kbd_intr.py tests: Format all Python code with black, except tests in basics subdir. 2020-03-30 13:21:58 +11:00
kbd_intr.py.exp tests/micropython: Add test for micropython.kbd_intr(). 2017-04-18 17:24:30 +10:00
meminfo.py tests: Format all Python code with black, except tests in basics subdir. 2020-03-30 13:21:58 +11:00
meminfo.py.exp tests/meminfo: Update for addition of "max free sz" output. 2016-07-01 00:39:26 +03:00
memstats.py tests: Format all Python code with black, except tests in basics subdir. 2020-03-30 13:21:58 +11:00
memstats.py.exp tests: Add missing tests for builtins, and many other things. 2015-04-04 22:05:30 +01:00
native_closure.py tests: Format all Python code with black, except tests in basics subdir. 2020-03-30 13:21:58 +11:00
native_closure.py.exp tests: Add specific test for closures in native emitter. 2015-04-03 16:14:25 +01:00
native_const.py tests: Format all Python code with black, except tests in basics subdir. 2020-03-30 13:21:58 +11:00
native_const.py.exp tests/micropython: Test loading const objs in native and viper funcs. 2018-09-27 23:39:08 +10:00
native_const_intbig.py tests: Format all Python code with black, except tests in basics subdir. 2020-03-30 13:21:58 +11:00
native_const_intbig.py.exp tests/micropython/: Split off intbig tests. 2017-03-07 07:12:58 +01:00
native_gen.py tests: Format all Python code with black, except tests in basics subdir. 2020-03-30 13:21:58 +11:00
native_gen.py.exp tests/micropython: Add test for native generators. 2019-09-26 16:53:47 +10:00
native_misc.py tests: Format all Python code with black, except tests in basics subdir. 2020-03-30 13:21:58 +11:00
native_misc.py.exp tests: Add tests for SyntaxError, TypeError, and other missing things. 2015-03-25 23:10:09 +00:00
native_try.py tests: Format all Python code with black, except tests in basics subdir. 2020-03-30 13:21:58 +11:00
native_try.py.exp tests/micropython: Add tests for try and with blocks under native/viper. 2018-08-17 14:11:36 +10:00
native_try_deep.py tests: Format all Python code with black, except tests in basics subdir. 2020-03-30 13:21:58 +11:00
native_try_deep.py.exp tests/micropython: Add tests for try and with blocks under native/viper. 2018-08-17 14:11:36 +10:00
native_with.py tests: Format all Python code with black, except tests in basics subdir. 2020-03-30 13:21:58 +11:00
native_with.py.exp py: Shorten error messages by using contractions and some rewording. 2018-09-20 14:33:10 +10:00
opt_level.py tests: Format all Python code with black, except tests in basics subdir. 2020-03-30 13:21:58 +11:00
opt_level.py.exp tests: Split out test for optimisation level and line-no printing. 2019-08-28 12:47:58 +10:00
opt_level_lineno.py tests: Format all Python code with black, except tests in basics subdir. 2020-03-30 13:21:58 +11:00
opt_level_lineno.py.exp tests: Split out test for optimisation level and line-no printing. 2019-08-28 12:47:58 +10:00
schedule.py tests: Format all Python code with black, except tests in basics subdir. 2020-03-30 13:21:58 +11:00
schedule.py.exp tests/micropython: Add tests for micropython.schedule(). 2017-03-20 15:20:26 +11:00
stack_use.py tests: Format all Python code with black, except tests in basics subdir. 2020-03-30 13:21:58 +11:00
stack_use.py.exp tests/micropython: Add test for micropython.stack_use() function. 2016-12-28 17:46:52 +11:00
viper_addr.py tests: Format all Python code with black, except tests in basics subdir. 2020-03-30 13:21:58 +11:00
viper_addr.py.exp py: Allow to pass in read-only buffers to viper and inline-asm funcs. 2019-08-06 15:58:23 +10:00
viper_args.py tests: Format all Python code with black, except tests in basics subdir. 2020-03-30 13:21:58 +11:00
viper_args.py.exp py/emitnative: Support arbitrary number of arguments to viper functions. 2018-09-15 22:39:27 +10:00
viper_binop_arith.py tests: Format all Python code with black, except tests in basics subdir. 2020-03-30 13:21:58 +11:00
viper_binop_arith.py.exp py: Implement native multiply operation in viper emitter. 2015-06-04 14:00:29 +00:00
viper_binop_arith_uint.py py/emitnative: Implement binary operations for viper uint operands. 2020-06-27 00:24:04 +10:00
viper_binop_arith_uint.py.exp py/emitnative: Implement binary operations for viper uint operands. 2020-06-27 00:24:04 +10:00
viper_binop_bitwise_uint.py py/emitnative: Implement binary operations for viper uint operands. 2020-06-27 00:24:04 +10:00
viper_binop_bitwise_uint.py.exp py/emitnative: Implement binary operations for viper uint operands. 2020-06-27 00:24:04 +10:00
viper_binop_comp.py tests: Format all Python code with black, except tests in basics subdir. 2020-03-30 13:21:58 +11:00
viper_binop_comp.py.exp tests: Add tests for viper binary operations. 2014-09-29 19:42:06 +01:00
viper_binop_comp_imm.py tests: Format all Python code with black, except tests in basics subdir. 2020-03-30 13:21:58 +11:00
viper_binop_comp_imm.py.exp asmarm: Fix bug with encoding small negative ints using MVN instruction. 2014-12-14 03:24:17 +02:00
viper_binop_comp_uint.py py/emitnative: Implement binary operations for viper uint operands. 2020-06-27 00:24:04 +10:00
viper_binop_comp_uint.py.exp py/emitnative: Implement binary operations for viper uint operands. 2020-06-27 00:24:04 +10:00
viper_binop_divmod.py tests: Format all Python code with black, except tests in basics subdir. 2020-03-30 13:21:58 +11:00
viper_binop_divmod.py.exp py/emitnative: Implement floor-division and modulo for viper emitter. 2017-10-11 18:54:34 +11:00
viper_binop_multi_comp.py tests: Format all Python code with black, except tests in basics subdir. 2020-03-30 13:21:58 +11:00
viper_binop_multi_comp.py.exp py: Partially fix viper multi-comparison; add test for it. 2014-10-19 19:00:51 +01:00
viper_cond.py tests: Format all Python code with black, except tests in basics subdir. 2020-03-30 13:21:58 +11:00
viper_cond.py.exp tests/micropython/viper_cond: Add test for large int as bool. 2018-08-04 22:16:24 +10:00
viper_const.py tests: Format all Python code with black, except tests in basics subdir. 2020-03-30 13:21:58 +11:00
viper_const.py.exp tests/micropython: Test loading const objs in native and viper funcs. 2018-09-27 23:39:08 +10:00
viper_const_intbig.py tests: Format all Python code with black, except tests in basics subdir. 2020-03-30 13:21:58 +11:00
viper_const_intbig.py.exp tests/micropython: Test loading const objs in native and viper funcs. 2018-09-27 23:39:08 +10:00
viper_error.py py/emitnative: Implement binary operations for viper uint operands. 2020-06-27 00:24:04 +10:00
viper_error.py.exp py/emitnative: Implement binary operations for viper uint operands. 2020-06-27 00:24:04 +10:00
viper_globals.py tests: Format all Python code with black, except tests in basics subdir. 2020-03-30 13:21:58 +11:00
viper_globals.py.exp py/emitnative: Make viper funcs run with their correct globals context. 2018-09-15 22:39:27 +10:00
viper_import.py tests: Format all Python code with black, except tests in basics subdir. 2020-03-30 13:21:58 +11:00
viper_import.py.exp tests/micropython: Add test for import from within viper function. 2016-11-10 22:54:55 +11:00
viper_misc.py tests: Format all Python code with black, except tests in basics subdir. 2020-03-30 13:21:58 +11:00
viper_misc.py.exp tests/micropython/: Split off intbig tests. 2017-03-07 07:12:58 +01:00
viper_misc_intbig.py tests: Format all Python code with black, except tests in basics subdir. 2020-03-30 13:21:58 +11:00
viper_misc_intbig.py.exp tests/micropython/: Split off intbig tests. 2017-03-07 07:12:58 +01:00
viper_ptr8_load.py tests: Format all Python code with black, except tests in basics subdir. 2020-03-30 13:21:58 +11:00
viper_ptr8_load.py.exp tests: Add more tests for viper, including tests for ViperTypeError's. 2015-04-22 23:18:28 +01:00
viper_ptr8_store.py tests: Format all Python code with black, except tests in basics subdir. 2020-03-30 13:21:58 +11:00
viper_ptr8_store.py.exp tests: Add more tests for viper, including tests for ViperTypeError's. 2015-04-22 23:18:28 +01:00
viper_ptr16_load.py tests: Format all Python code with black, except tests in basics subdir. 2020-03-30 13:21:58 +11:00
viper_ptr16_load.py.exp tests: Add more tests for viper 16/32-bit load/store, and ellipsis. 2015-10-13 18:24:36 +01:00
viper_ptr16_store.py tests: Format all Python code with black, except tests in basics subdir. 2020-03-30 13:21:58 +11:00
viper_ptr16_store.py.exp tests: Add more tests for viper 16/32-bit load/store, and ellipsis. 2015-10-13 18:24:36 +01:00
viper_ptr32_load.py tests: Format all Python code with black, except tests in basics subdir. 2020-03-30 13:21:58 +11:00
viper_ptr32_load.py.exp tests: Add more tests for viper 16/32-bit load/store, and ellipsis. 2015-10-13 18:24:36 +01:00
viper_ptr32_store.py tests: Format all Python code with black, except tests in basics subdir. 2020-03-30 13:21:58 +11:00
viper_ptr32_store.py.exp tests: Add more tests for viper 16/32-bit load/store, and ellipsis. 2015-10-13 18:24:36 +01:00
viper_subscr.py tests: Format all Python code with black, except tests in basics subdir. 2020-03-30 13:21:58 +11:00
viper_subscr.py.exp py: Implement implicit cast to obj for viper load/store index/value. 2015-06-04 11:52:16 +01:00
viper_try.py tests: Format all Python code with black, except tests in basics subdir. 2020-03-30 13:21:58 +11:00
viper_try.py.exp tests/micropython: Add tests for try and with blocks under native/viper. 2018-08-17 14:11:36 +10:00
viper_types.py tests: Format all Python code with black, except tests in basics subdir. 2020-03-30 13:21:58 +11:00
viper_types.py.exp py/native: Improve support for bool type in viper functions. 2019-05-03 23:18:30 +10:00
viper_with.py tests: Format all Python code with black, except tests in basics subdir. 2020-03-30 13:21:58 +11:00
viper_with.py.exp py: Shorten error messages by using contractions and some rewording. 2018-09-20 14:33:10 +10:00