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[/] [openrisc/] [trunk/] [rtos/] [freertos-6.1.1/] [Source/] [portable/] [Softune/] [MB96340/] [__STD_LIB_sbrk.c] - Blame information for rev 609

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Line No. Rev Author Line
1 572 jeremybenn
/* 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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        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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        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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