-#define MEMHEADER struct MAH// Memory Allocation Header
-
-MEMHEADER
-{
- MEMHEADER xdata * next;
- MEMHEADER xdata * prev;
- unsigned int len;
- unsigned char mem[1];
-};
-
-#ifdef SDCC_STACK_AUTO
-
-extern void init_dynamic_memory(MEMHEADER xdata * , unsigned int ) reentrant;
-extern void xdata * malloc (unsigned int ) reentrant;
-extern void free (void xdata * p) reentrant;
+void * calloc (size_t nmemb, size_t size);
+void * malloc (size_t size);
+void * realloc (void * ptr, size_t size);
+void free (void * ptr);