Merge pull request #1057 from tannewt/flexible_heap

Add basic memory allocation outside Python runtime
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Dan Halbert 5 years ago committed by GitHub
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@ -45,12 +45,14 @@
#include "mpconfigboard.h"
#include "supervisor/cpu.h"
#include "supervisor/memory.h"
#include "supervisor/port.h"
#include "supervisor/filesystem.h"
// TODO(tannewt): Figure out how to choose language at compile time.
#include "supervisor/messages/en-US.h"
#include "supervisor/shared/autoreload.h"
#include "supervisor/shared/rgb_led_status.h"
#include "supervisor/shared/stack.h"
#include "supervisor/serial.h"
void do_str(const char *src, mp_parse_input_kind_t input_kind) {
@ -73,12 +75,21 @@ void do_str(const char *src, mp_parse_input_kind_t input_kind) {
}
}
static char heap[PORT_HEAP_SIZE];
void reset_mp(void) {
void start_mp(supervisor_allocation* heap) {
reset_status_led();
autoreload_stop();
// Stack limit should be less than real stack size, so we have a chance
// to recover from limit hit. (Limit is measured in bytes.)
mp_stack_ctrl_init();
mp_stack_set_limit(stack_alloc->length - 1024);
#if MICROPY_MAX_STACK_USAGE
// _ezero (same as _ebss) is an int, so start 4 bytes above it.
mp_stack_set_bottom(stack_alloc->ptr);
mp_stack_fill_with_sentinel();
#endif
// Sync the file systems in case any used RAM from the GC to cache. As soon
// as we re-init the GC all bets are off on the cache.
filesystem_flush();
@ -87,7 +98,7 @@ void reset_mp(void) {
readline_init0();
#if MICROPY_ENABLE_GC
gc_init(heap, heap + sizeof(heap));
gc_init(heap->ptr, heap->ptr + heap->length / 4);
#endif
mp_init();
mp_obj_list_init(mp_sys_path, 0);
@ -99,6 +110,11 @@ void reset_mp(void) {
mp_obj_list_init(mp_sys_argv, 0);
}
void stop_mp(void) {
}
#define STRING_LIST(...) {__VA_ARGS__, ""}
// Look for the first file that exists in the list of filenames, using mp_import_stat().
@ -124,7 +140,7 @@ bool maybe_run_list(const char ** filenames, pyexec_result_t* exec_result) {
return true;
}
bool start_mp(safe_mode_t safe_mode) {
bool run_code_py(safe_mode_t safe_mode) {
bool serial_connected_at_start = serial_connected();
#ifdef CIRCUITPY_AUTORELOAD_DELAY_MS
if (serial_connected_at_start) {
@ -155,7 +171,11 @@ bool start_mp(safe_mode_t safe_mode) {
const char *supported_filenames[] = STRING_LIST("code.txt", "code.py", "main.py", "main.txt");
const char *double_extension_filenames[] = STRING_LIST("code.txt.py", "code.py.txt", "code.txt.txt","code.py.py",
"main.txt.py", "main.py.txt", "main.txt.txt","main.py.py");
reset_mp();
stack_resize();
filesystem_flush();
supervisor_allocation* heap = allocate_remaining_memory();
start_mp(heap);
found_main = maybe_run_list(supported_filenames, &result);
if (!found_main){
found_main = maybe_run_list(double_extension_filenames, &result);
@ -163,6 +183,8 @@ bool start_mp(safe_mode_t safe_mode) {
serial_write(MSG_DOUBLE_FILE_EXTENSION);
}
}
stop_mp();
free_memory(heap);
reset_port();
reset_board();
@ -291,6 +313,12 @@ void __attribute__ ((noinline)) run_boot_py(safe_mode_t safe_mode) {
}
#endif
stack_init();
// TODO(tannewt): Allocate temporary space to hold custom usb descriptors.
filesystem_flush();
supervisor_allocation* heap = allocate_remaining_memory();
start_mp(heap);
// TODO(tannewt): Re-add support for flashing boot error output.
bool found_boot = maybe_run_list(boot_py_filenames, NULL);
(void) found_boot;
@ -306,27 +334,41 @@ void __attribute__ ((noinline)) run_boot_py(safe_mode_t safe_mode) {
// Reset to remove any state that boot.py setup. It should only be used to
// change internal state that's not in the heap.
reset_port();
reset_mp();
reset_board();
stop_mp();
free_memory(heap);
}
}
int run_repl(void) {
int exit_code = PYEXEC_FORCED_EXIT;
stack_resize();
filesystem_flush();
supervisor_allocation* heap = allocate_remaining_memory();
start_mp(heap);
autoreload_suspend();
new_status_color(REPL_RUNNING);
if (pyexec_mode_kind == PYEXEC_MODE_RAW_REPL) {
exit_code = pyexec_raw_repl();
} else {
exit_code = pyexec_friendly_repl();
}
reset_port();
reset_board();
stop_mp();
free_memory(heap);
autoreload_resume();
return exit_code;
}
int __attribute__((used)) main(void) {
memory_init();
// initialise the cpu and peripherals
safe_mode_t safe_mode = port_init();
rgb_led_status_init();
// Stack limit should be less than real stack size, so we have a chance
// to recover from limit hit. (Limit is measured in bytes.)
mp_stack_set_top((char*)&_estack);
mp_stack_set_limit((char*)&_estack - (char*)&_ebss - 1024);
#if MICROPY_MAX_STACK_USAGE
// _ezero (same as _ebss) is an int, so start 4 bytes above it.
mp_stack_set_bottom(&_ezero + 1);
mp_stack_fill_with_sentinel();
#endif
// Create a new filesystem only if we're not in a safe mode.
// A power brownout here could make it appear as if there's
// no SPI flash filesystem, and we might erase the existing one.
@ -335,7 +377,6 @@ int __attribute__((used)) main(void) {
// Reset everything and prep MicroPython to run boot.py.
reset_port();
reset_board();
reset_mp();
// Turn on autoreload by default but before boot.py in case it wants to change it.
autoreload_enable();
@ -355,24 +396,14 @@ int __attribute__((used)) main(void) {
bool first_run = true;
for (;;) {
if (!skip_repl) {
reset_mp();
autoreload_suspend();
new_status_color(REPL_RUNNING);
if (pyexec_mode_kind == PYEXEC_MODE_RAW_REPL) {
exit_code = pyexec_raw_repl();
} else {
exit_code = pyexec_friendly_repl();
}
autoreload_resume();
reset_port();
reset_board();
exit_code = run_repl();
}
if (exit_code == PYEXEC_FORCED_EXIT) {
if (!first_run) {
serial_write(MSG_SOFT_REBOOT MSG_NEWLINE);
}
first_run = false;
skip_repl = start_mp(safe_mode);
skip_repl = run_code_py(safe_mode);
} else if (exit_code != 0) {
break;
}

@ -288,7 +288,8 @@ SRC_C = \
lib/libc/string0.c \
lib/mp-readline/readline.c \
$(BUILD)/autogen_usb_descriptor.c \
freetouch/adafruit_ptc.c
freetouch/adafruit_ptc.c \
supervisor/shared/memory.c
# Choose which flash filesystem impl to use.
# (Right now INTERNAL_FLASH_FILESYSTEM and SPI_FLASH_FILESYSTEM are mutually exclusive.

@ -37,6 +37,7 @@
#include "py/runtime.h"
#include "lib/oofatfs/ff.h"
#include "shared-bindings/microcontroller/__init__.h"
#include "supervisor/memory.h"
#include "supervisor/shared/rgb_led_status.h"
#include "hal_gpio.h"
@ -59,6 +60,8 @@ static const external_flash_device* flash_device = NULL;
// cache.
static uint32_t dirty_mask;
static supervisor_allocation* supervisor_cache = NULL;
// Wait until both the write enable and write in progress bits have cleared.
static bool wait_for_flash_ready(void) {
uint8_t read_status_response[1] = {0x00};
@ -308,6 +311,23 @@ static bool flush_scratch_flash(void) {
static bool allocate_ram_cache(void) {
uint8_t blocks_per_sector = SPI_FLASH_ERASE_SIZE / FILESYSTEM_BLOCK_SIZE;
uint8_t pages_per_block = FILESYSTEM_BLOCK_SIZE / SPI_FLASH_PAGE_SIZE;
uint32_t table_size = blocks_per_sector * pages_per_block * sizeof(uint32_t);
// Attempt to allocate outside the heap first.
supervisor_cache = allocate_memory(table_size + SPI_FLASH_ERASE_SIZE, false);
if (supervisor_cache != NULL) {
MP_STATE_VM(flash_ram_cache) = (uint8_t **) supervisor_cache->ptr;
uint8_t* page_start = (uint8_t *) supervisor_cache->ptr + table_size;
for (uint8_t i = 0; i < blocks_per_sector; i++) {
for (uint8_t j = 0; j < pages_per_block; j++) {
uint32_t offset = i * pages_per_block + j;
MP_STATE_VM(flash_ram_cache)[offset] = page_start + offset * SPI_FLASH_PAGE_SIZE;
}
}
return true;
}
MP_STATE_VM(flash_ram_cache) = m_malloc_maybe(blocks_per_sector * pages_per_block * sizeof(uint32_t), false);
if (MP_STATE_VM(flash_ram_cache) == NULL) {
return false;
@ -383,14 +403,19 @@ static bool flush_ram_cache(bool keep_cache) {
write_flash(current_sector + (i * pages_per_block + j) * SPI_FLASH_PAGE_SIZE,
MP_STATE_VM(flash_ram_cache)[i * pages_per_block + j],
SPI_FLASH_PAGE_SIZE);
if (!keep_cache) {
if (!keep_cache && supervisor_cache == NULL) {
m_free(MP_STATE_VM(flash_ram_cache)[i * pages_per_block + j]);
}
}
}
// We're done with the cache for now so give it back.
if (!keep_cache) {
m_free(MP_STATE_VM(flash_ram_cache));
if (supervisor_cache != NULL) {
free_memory(supervisor_cache);
supervisor_cache = NULL;
} else {
m_free(MP_STATE_VM(flash_ram_cache));
}
MP_STATE_VM(flash_ram_cache) = NULL;
}
return true;

@ -338,4 +338,8 @@ void run_background_tasks(void);
#define CIRCUITPY_AUTORELOAD_DELAY_MS 500
#define CIRCUITPY_BOOT_OUTPUT_FILE "/boot_out.txt"
// TODO(tannewt): Make this 6k+ for any non-express M4 boards because they cache sectors on the
// stack.
#define CIRCUITPY_DEFAULT_STACK_SIZE 2048
#endif // __INCLUDED_MPCONFIGPORT_H

@ -119,6 +119,7 @@ SRC_C += \
lib/utils/sys_stdio_mphal.c \
lib/libc/string0.c \
lib/mp-readline/readline.c \
supervisor/shared/memory.c
DRIVERS_SRC_C += $(addprefix modules/,\
ubluepy/modubluepy.c \

@ -242,5 +242,6 @@ void run_background_tasks(void);
#define MICROPY_VM_HOOK_RETURN run_background_tasks();
//#define CIRCUITPY_BOOT_OUTPUT_FILE "/boot_out.txt"
#define CIRCUITPY_DEFAULT_STACK_SIZE 2048
#endif

@ -23,17 +23,17 @@
* OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
* THE SOFTWARE.
*/
#include "py/obj.h"
#include "py/runtime.h"
#include "py/reload.h"
#include "py/obj.h"
#include "py/runtime.h"
#include "py/reload.h"
#include "lib/utils/interrupt_char.h"
#include "supervisor/shared/autoreload.h"
#include "lib/utils/interrupt_char.h"
#include "supervisor/shared/autoreload.h"
#include "supervisor/shared/rgb_led_status.h"
#include "supervisor/shared/stack.h"
#include "supervisor/shared/rgb_led_status.h"
#include "shared-bindings/supervisor/__init__.h"
#include "shared-bindings/supervisor/Runtime.h"
#include "shared-bindings/supervisor/__init__.h"
#include "shared-bindings/supervisor/Runtime.h"
//| :mod:`supervisor` --- Supervisor settings
//| =================================================
@ -107,6 +107,21 @@ STATIC mp_obj_t supervisor_reload(void) {
}
MP_DEFINE_CONST_FUN_OBJ_0(supervisor_reload_obj, supervisor_reload);
//| .. method:: set_next_stack_limit(size)
//|
//| Set the size of the stack for the next vm run. If its too large, the default will be used.
//|
STATIC mp_obj_t supervisor_set_next_stack_limit(mp_obj_t size_obj) {
mp_int_t size = mp_obj_get_int(size_obj);
if (size < 256) {
mp_raise_ValueError("Stack size must be at least 256");
}
set_next_stack_size(size);
return mp_const_none;
}
MP_DEFINE_CONST_FUN_OBJ_1(supervisor_set_next_stack_limit_obj, supervisor_set_next_stack_limit);
STATIC const mp_rom_map_elem_t supervisor_module_globals_table[] = {
{ MP_ROM_QSTR(MP_QSTR___name__), MP_ROM_QSTR(MP_QSTR_supervisor) },
@ -115,6 +130,8 @@ STATIC const mp_rom_map_elem_t supervisor_module_globals_table[] = {
{ MP_OBJ_NEW_QSTR(MP_QSTR_set_rgb_status_brightness), MP_ROM_PTR(&supervisor_set_rgb_status_brightness_obj) },
{ MP_ROM_QSTR(MP_QSTR_runtime), MP_ROM_PTR(&common_hal_supervisor_runtime_obj) },
{ MP_ROM_QSTR(MP_QSTR_reload), MP_ROM_PTR(&supervisor_reload_obj) },
{ MP_ROM_QSTR(MP_QSTR_set_next_stack_limit), MP_ROM_PTR(&supervisor_set_next_stack_limit_obj) },
};
STATIC MP_DEFINE_CONST_DICT(supervisor_module_globals, supervisor_module_globals_table);

@ -0,0 +1,51 @@
/*
* This file is part of the MicroPython project, http://micropython.org/
*
* The MIT License (MIT)
*
* Copyright (c) 2018 Scott Shawcroft for Adafruit Industries
*
* Permission is hereby granted, free of charge, to any person obtaining a copy
* of this software and associated documentation files (the "Software"), to deal
* in the Software without restriction, including without limitation the rights
* to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
* copies of the Software, and to permit persons to whom the Software is
* furnished to do so, subject to the following conditions:
*
* The above copyright notice and this permission notice shall be included in
* all copies or substantial portions of the Software.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
* AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
* OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
* THE SOFTWARE.
*/
// Basic allocations outside them for areas such as the VM heap and stack.
// supervisor/shared/memory.c has a basic implementation for a continuous chunk of memory. Add it
// to a SRC_ in a Makefile to use it.
#ifndef MICROPY_INCLUDED_SUPERVISOR_MEMORY_H
#define MICROPY_INCLUDED_SUPERVISOR_MEMORY_H
#include <stdbool.h>
#include <stdint.h>
typedef struct {
uint32_t* ptr;
uint32_t length; // in bytes
} supervisor_allocation;
void memory_init(void);
void free_memory(supervisor_allocation* allocation);
supervisor_allocation* allocate_remaining_memory(void);
// Allocate a piece of a given length in bytes. If high_address is true then it should be allocated
// at a lower address from the top of the stack. Otherwise, addresses will increase starting after
// statically allocated memory.
supervisor_allocation* allocate_memory(uint32_t length, bool high_address);
#endif // MICROPY_INCLUDED_SUPERVISOR_MEMORY_H

@ -0,0 +1,116 @@
/*
* This file is part of the MicroPython project, http://micropython.org/
*
* The MIT License (MIT)
*
* Copyright (c) 2018 Scott Shawcroft for Adafruit Industries
*
* Permission is hereby granted, free of charge, to any person obtaining a copy
* of this software and associated documentation files (the "Software"), to deal
* in the Software without restriction, including without limitation the rights
* to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
* copies of the Software, and to permit persons to whom the Software is
* furnished to do so, subject to the following conditions:
*
* The above copyright notice and this permission notice shall be included in
* all copies or substantial portions of the Software.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
* AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
* OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
* THE SOFTWARE.
*/
#include "supervisor/memory.h"
#include <stddef.h>
#define CIRCUITPY_SUPERVISOR_ALLOC_COUNT 8
static supervisor_allocation allocations[CIRCUITPY_SUPERVISOR_ALLOC_COUNT];
// We use uint32_t* to ensure word (4 byte) alignment.
uint32_t* low_address;
uint32_t* high_address;
extern uint32_t _ebss;
extern uint32_t _estack;
void memory_init(void) {
low_address = &_ebss;
high_address = &_estack;
}
void free_memory(supervisor_allocation* allocation) {
uint8_t index = 0;
bool found = false;
for (index = 0; index < CIRCUITPY_SUPERVISOR_ALLOC_COUNT; index++) {
found = allocation == &allocations[index];
if (found) {
break;
}
}
if (!found) {
// Bad!
// TODO(tannewt): Add a way to escape into safe mode on error.
}
if (allocation->ptr == high_address) {
high_address += allocation->length / 4;
for (index++; index < CIRCUITPY_SUPERVISOR_ALLOC_COUNT; index++) {
if (allocations[index].ptr != NULL) {
break;
}
high_address += allocations[index].length / 4;
}
} else if (allocation->ptr + allocation->length / 4 == low_address) {
low_address = allocation->ptr;
for (index--; index >= 0; index--) {
if (allocations[index].ptr != NULL) {
break;
}
low_address -= allocations[index].length / 4;
}
} else {
// Freed memory isn't in the middle so skip updating bounds. The memory will be added to the
// middle when the memory to the inside is freed.
}
allocation->ptr = NULL;
}
supervisor_allocation* allocate_remaining_memory(void) {
if (low_address == high_address) {
return NULL;
}
return allocate_memory((high_address - low_address) * 4, false);
}
supervisor_allocation* allocate_memory(uint32_t length, bool high) {
if ((high_address - low_address) * 4 < (int32_t) length || length % 4 != 0) {
return NULL;
}
uint8_t index = 0;
int8_t direction = 1;
if (high) {
index = CIRCUITPY_SUPERVISOR_ALLOC_COUNT - 1;
direction = -1;
}
for (; index < CIRCUITPY_SUPERVISOR_ALLOC_COUNT; index += direction) {
if (allocations[index].ptr == NULL) {
break;
}
}
if (index >= CIRCUITPY_SUPERVISOR_ALLOC_COUNT) {
return NULL;
}
supervisor_allocation* alloc = &allocations[index];
if (high) {
high_address -= length / 4;
alloc->ptr = high_address;
} else {
alloc->ptr = low_address;
low_address += length / 4;
}
alloc->length = length;
return alloc;
}

@ -0,0 +1,74 @@
/*
* This file is part of the MicroPython project, http://micropython.org/
*
* The MIT License (MIT)
*
* Copyright (c) 2018 Scott Shawcroft for Adafruit Industries
*
* Permission is hereby granted, free of charge, to any person obtaining a copy
* of this software and associated documentation files (the "Software"), to deal
* in the Software without restriction, including without limitation the rights
* to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
* copies of the Software, and to permit persons to whom the Software is
* furnished to do so, subject to the following conditions:
*
* The above copyright notice and this permission notice shall be included in
* all copies or substantial portions of the Software.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
* AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
* OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
* THE SOFTWARE.
*/
#include "stack.h"
#include "py/mpconfig.h"
#include "supervisor/cpu.h"
extern uint32_t _estack;
static uint32_t next_stack_size = CIRCUITPY_DEFAULT_STACK_SIZE;
static uint32_t current_stack_size = 0;
supervisor_allocation* stack_alloc = NULL;
#define EXCEPTION_STACK_SIZE 1024
void allocate_stack(void) {
mp_uint_t regs[10];
mp_uint_t sp = cpu_get_regs_and_sp(regs);
mp_uint_t c_size = (uint32_t) &_estack - sp;
stack_alloc = allocate_memory(c_size + next_stack_size + EXCEPTION_STACK_SIZE, true);
if (stack_alloc == NULL) {
stack_alloc = allocate_memory(c_size + CIRCUITPY_DEFAULT_STACK_SIZE + EXCEPTION_STACK_SIZE, true);
current_stack_size = CIRCUITPY_DEFAULT_STACK_SIZE;
} else {
current_stack_size = next_stack_size;
}
}
void stack_init(void) {
allocate_stack();
}
void stack_resize(void) {
if (next_stack_size == current_stack_size) {
return;
}
free_memory(stack_alloc);
stack_alloc = NULL;
allocate_stack();
}
void set_next_stack_size(uint32_t size) {
next_stack_size = size;
}
uint32_t get_current_stack_size(void) {
return current_stack_size;
}

@ -0,0 +1,41 @@
/*
* This file is part of the MicroPython project, http://micropython.org/
*
* The MIT License (MIT)
*
* Copyright (c) 2018 Scott Shawcroft for Adafruit Industries
*
* Permission is hereby granted, free of charge, to any person obtaining a copy
* of this software and associated documentation files (the "Software"), to deal
* in the Software without restriction, including without limitation the rights
* to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
* copies of the Software, and to permit persons to whom the Software is
* furnished to do so, subject to the following conditions:
*
* The above copyright notice and this permission notice shall be included in
* all copies or substantial portions of the Software.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
* AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
* OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
* THE SOFTWARE.
*/
#ifndef MICROPY_INCLUDED_SUPERVISOR_STACK_H
#define MICROPY_INCLUDED_SUPERVISOR_STACK_H
#include <stddef.h>
#include "supervisor/memory.h"
extern supervisor_allocation* stack_alloc;
void stack_init(void);
void stack_resize(void);
void set_next_stack_size(uint32_t size);
uint32_t get_current_stack_size(void);
#endif // MICROPY_INCLUDED_SUPERVISOR_STACK_H

@ -2,7 +2,8 @@ SRC_SUPERVISOR = \
main.c \
supervisor/port.c \
supervisor/shared/autoreload.c \
supervisor/shared/rgb_led_status.c
supervisor/shared/rgb_led_status.c \
supervisor/shared/stack.c
ifeq ($(wildcard atmel-samd/supervisor/filesystem.c),)
SRC_SUPERVISOR += supervisor/filesystem.c

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