/* 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 ); | |
} |