29 lines
1.1 KiB
C
29 lines
1.1 KiB
C
/* 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);
|
|
}
|
|
|