64 lines
2.4 KiB
C
Executable File
64 lines
2.4 KiB
C
Executable File
/*
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* This file is part of the MicroPython project, http://micropython.org/
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*
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* The MIT License (MIT)
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*
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* Copyright (c) 2018 Scott Shawcroft for Adafruit Industries
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*
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* Permission is hereby granted, free of charge, to any person obtaining a copy
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* of this software and associated documentation files (the "Software"), to deal
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* in the Software without restriction, including without limitation the rights
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* to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
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* copies of the Software, and to permit persons to whom the Software is
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* furnished to do so, subject to the following conditions:
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*
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* The above copyright notice and this permission notice shall be included in
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* all copies or substantial portions of the Software.
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*
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* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
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* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
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* AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
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* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
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* OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
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* THE SOFTWARE.
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*/
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// Basic allocations outside them for areas such as the VM heap and stack.
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// supervisor/shared/memory.c has a basic implementation for a continuous chunk of memory. Add it
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// to a SRC_ in a Makefile to use it.
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#ifndef MICROPY_INCLUDED_SUPERVISOR_MEMORY_H
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#define MICROPY_INCLUDED_SUPERVISOR_MEMORY_H
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#include <stdbool.h>
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#include <stdint.h>
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typedef struct {
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uint32_t* ptr;
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uint32_t length; // in bytes
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} supervisor_allocation;
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void memory_init(void);
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void free_memory(supervisor_allocation* allocation);
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supervisor_allocation* allocate_remaining_memory(void);
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// Allocate a piece of a given length in bytes. If high_address is true then it should be allocated
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// at a lower address from the top of the stack. Otherwise, addresses will increase starting after
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// statically allocated memory.
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supervisor_allocation* allocate_memory(uint32_t length, bool high_address);
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static inline uint16_t align32_size(uint16_t size) {
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if (size % 4 != 0) {
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return (size & 0xfffc) + 0x4;
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}
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return size;
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}
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// Called after the heap is freed in case the supervisor wants to save some values.
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void supervisor_move_memory(void);
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#endif // MICROPY_INCLUDED_SUPERVISOR_MEMORY_H
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