34 lines
1.2 KiB
C
34 lines
1.2 KiB
C
/* THIS SAMPLE CODE IS PROVIDED AS IS AND IS SUBJECT TO ALTERATIONS. FUJITSU */
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/* MICROELECTRONICS ACCEPTS NO RESPONSIBILITY OR LIABILITY FOR ANY ERRORS OR */
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/* ELIGIBILITY FOR ANY PURPOSES. */
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/* (C) Fujitsu Microelectronics Europe GmbH */
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/*---------------------------------------------------------------------------
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__STD_LIB_sbrk.C
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- Used by heap_3.c for memory accocation and deletion.
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/*---------------------------------------------------------------------------*/
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#include "FreeRTOSConfig.h"
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#include <stdlib.h>
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static long brk_siz = 0;
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// #if configTOTAL_HEAP_SIZE != 0
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typedef int _heep_t;
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#define ROUNDUP(s) (((s)+sizeof(_heep_t)-1)&~(sizeof(_heep_t)-1))
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static _heep_t _heep[ROUNDUP(configTOTAL_HEAP_SIZE)/sizeof(_heep_t)];
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#define _heep_size ROUNDUP(configTOTAL_HEAP_SIZE)
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/* #else
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extern char *_heep;
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extern long _heep_size;
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#endif
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*/
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extern char *sbrk(int size)
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{
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if (brk_siz + size > _heep_size || brk_siz + size < 0)
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return((char*)-1);
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brk_siz += size;
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return( (char*)_heep + brk_siz - size);
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}
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