begriffs open source - freertos/blob - portable/Softune/MB91460/__STD_LIB_sbrk.c

   1 #include "FreeRTOSConfig.h"\r
   2 #include <stdlib.h>\r
   3 \r
   4         static  long         brk_siz  =  0;\r
   5 //      #if  configTOTAL_HEAP_SIZE != 0\r
   6         typedef int          _heep_t;\r
   7         #define ROUNDUP(s)   (((s)+sizeof(_heep_t)-1)&~(sizeof(_heep_t)-1))\r
   8         static  _heep_t      _heep[ROUNDUP(configTOTAL_HEAP_SIZE)/sizeof(_heep_t)];\r
   9         #define              _heep_size      ROUNDUP(configTOTAL_HEAP_SIZE)\r
  10 /*      #else\r
  11         extern  char        *_heep;\r
  12         extern  long        _heep_size;\r
  13         #endif\r
  14 */      \r
  15         extern  char  *sbrk(int  size)\r
  16         {\r
  17            if  (brk_siz  +  size  >  _heep_size  ||  brk_siz  +  size  <  0)\r
  18 \r
  19           return((char*)-1);\r
  20            brk_siz  +=  size;\r
  21            return(  (char*)_heep  +  brk_siz  -  size);\r
  22         }\r
  23 \r