| #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 void *free_mem_ptr = &_heap; /* Start of heap */ |
| static void *free_mem_end_ptr = &_eheap; /* End of heap */ |
| |
| void *malloc(size_t size) |
| { |
| void *p; |
| |
| MALLOCDBG("%s Enter, size %ld, free_mem_ptr %p\n", __func__, size, free_mem_ptr); |
| |
| /* Checking arguments */ |
| if (size < 0) |
| die("Error! malloc: size < 0"); |
| |
| /* Overzealous linker check */ |
| if (free_mem_ptr <= 0) |
| die("Error! malloc: Free_mem_ptr <= 0"); |
| |
| free_mem_ptr = (void *)ALIGN((unsigned long)free_mem_ptr, 4); |
| |
| p = (void *) free_mem_ptr; |
| free_mem_ptr += size; |
| |
| if (free_mem_ptr >= free_mem_end_ptr) |
| die("Error! malloc: Out of memory (free_mem_ptr >= free_mem_end_ptr)"); |
| |
| MALLOCDBG("malloc %p\n", p); |
| |
| return p; |
| } |
| |
| void free(void *where) |
| { |
| /* Don't care */ |
| MALLOCDBG("free %p\n", where); |
| } |