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/* 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);

        }