-static unsigned long mem_malloc_start;
-static unsigned long mem_malloc_end;
-static unsigned long mem_malloc_brk;
-
-static void mem_malloc_init(void)
-{
-
- mem_malloc_start = (TEXT_BASE - CONFIG_SYS_GBL_DATA_SIZE - CONFIG_SYS_MALLOC_LEN);
- mem_malloc_end = (mem_malloc_start + CONFIG_SYS_MALLOC_LEN - 16);
- mem_malloc_brk = mem_malloc_start;
- memset((void *) mem_malloc_start, 0,
- (mem_malloc_end - mem_malloc_start));
-}
-
-void *sbrk(ptrdiff_t increment)
-{
- unsigned long old = mem_malloc_brk;
- unsigned long new = old + increment;
-
- if ((new < mem_malloc_start) ||
- (new > mem_malloc_end)) {
- return NULL;
- }
-
- mem_malloc_brk = new;
- return (void *) old;
-}
-