| /* |
| * FreeRTOS Kernel <DEVELOPMENT BRANCH> |
| * Copyright (C) 2021 Amazon.com, Inc. or its affiliates. All Rights Reserved. |
| * |
| * SPDX-License-Identifier: MIT |
| * |
| * 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. |
| * |
| * https://www.FreeRTOS.org |
| * https://github.com/FreeRTOS |
| * |
| */ |
| |
| /* THIS SAMPLE CODE IS PROVIDED AS IS AND IS SUBJECT TO ALTERATIONS. FUJITSU */ |
| /* MICROELECTRONICS ACCEPTS NO RESPONSIBILITY OR LIABILITY FOR ANY ERRORS OR */ |
| /* ELIGIBILITY FOR ANY PURPOSES. */ |
| /* (C) Fujitsu Microelectronics Europe GmbH */ |
| /*--------------------------------------------------------------------------- |
| __STD_LIB_sbrk.C |
| - Used by heap_3.c for memory accocation and deletion. |
| |
| /*---------------------------------------------------------------------------*/ |
| |
| #include "FreeRTOSConfig.h" |
| #include <stdlib.h> |
| |
| static long brk_siz = 0; |
| typedef int _heep_t; |
| #define ROUNDUP(s) (((s)+sizeof(_heep_t)-1)&~(sizeof(_heep_t)-1)) |
| static _heep_t _heep[ROUNDUP(configTOTAL_HEAP_SIZE)/sizeof(_heep_t)]; |
| #define _heep_size ROUNDUP(configTOTAL_HEAP_SIZE) |
| |
| extern char *sbrk(int size) |
| { |
| if (brk_siz + size > _heep_size || brk_siz + size < 0) |
| |
| return((char*)-1); |
| brk_siz += size; |
| return( (char*)_heep + brk_siz - size); |
| } |