parent
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commit
e3b4508175
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/*
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* This file is part of the Trezor project, https://trezor.io/
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*
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* Copyright (c) SatoshiLabs
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*
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* This program is free software: you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation, either version 3 of the License, or
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* (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program. If not, see <http://www.gnu.org/licenses/>.
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*/
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#include "alloc_only.h"
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#include "common.h"
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#include "memzero.h"
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#define MEM_SIZE (37888 / 4)
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uint32_t alloc_memory_mem[MEM_SIZE];
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uint32_t * alloc_memory;
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void * alloc_only(uint16_t size){
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void * ptr = NULL;
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size_t aligned_size = size;
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if (size % 4 != 0) {
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aligned_size++;
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}
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if((alloc_memory + aligned_size) <= (alloc_memory_mem + MEM_SIZE)){
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ptr = alloc_memory;
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alloc_memory += aligned_size;
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}
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return ptr;
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}
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void alloc_only_init(bool clear) {
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alloc_memory = alloc_memory_mem;
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if (clear) {
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memzero(alloc_memory_mem, sizeof(alloc_memory_mem));
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}
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}
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@ -0,0 +1,34 @@
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/*
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* This file is part of the Trezor project, https://trezor.io/
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*
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* Copyright (c) SatoshiLabs
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*
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* This program is free software: you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation, either version 3 of the License, or
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* (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program. If not, see <http://www.gnu.org/licenses/>.
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*/
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#ifndef _ALLOC_H
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#define _ALLOC_H
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#include "common.h"
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#include "stdbool.h"
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void * alloc_only(uint16_t size);
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void alloc_only_init(bool clear);
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#endif //_ALLOC_H
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