#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 */ }