| #include <stdlib.h> |
| #include <console/console.h> |
| |
| #if 0 |
| #define MALLOCDBG(x) |
| #else |
| #define MALLOCDBG(x) printk_spew x |
| #endif |
| extern unsigned char _heap, _eheap; |
| static size_t free_mem_ptr = (size_t)&_heap; /* Start of heap */ |
| static size_t free_mem_end_ptr = (size_t)&_eheap; /* End of heap */ |
| |
| |
| void malloc_mark(malloc_mark_t *place) |
| { |
| *place = free_mem_ptr; |
| printk_spew("malloc_mark 0x%08lx\n", (unsigned long)free_mem_ptr); |
| } |
| |
| void malloc_release(malloc_mark_t *ptr) |
| { |
| free_mem_ptr = *ptr; |
| printk_spew("malloc_release 0x%08lx\n", (unsigned long)free_mem_ptr); |
| } |
| |
| void *malloc(size_t size) |
| { |
| void *p; |
| |
| MALLOCDBG(("%s Enter, size %d, free_mem_ptr %p\n", __FUNCTION__, size, free_mem_ptr)); |
| if (size < 0) |
| die("Error! malloc: Size < 0"); |
| if (free_mem_ptr <= 0) |
| die("Error! malloc: Free_mem_ptr <= 0"); |
| |
| free_mem_ptr = (free_mem_ptr + 3) & ~3; /* Align */ |
| |
| p = (void *) free_mem_ptr; |
| free_mem_ptr += size; |
| |
| if (free_mem_ptr >= free_mem_end_ptr) |
| die("Error! malloc: free_mem_ptr >= free_mem_end_ptr"); |
| |
| MALLOCDBG(("malloc 0x%08lx\n", (unsigned long)p)); |
| |
| return p; |
| } |
| |
| void free(void *where) |
| { |
| /* Don't care */ |
| } |