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; }
/* We don't restrict the boundary. This is firmware, * you are supposed to know what you are doing. */ void *memalign(size_t boundary, size_t size) { void *p; MALLOCDBG("%s Enter, boundary %zu, size %zu, free_mem_ptr %p\n", __func__, boundary, size, free_mem_ptr); free_mem_ptr = (void *)ALIGN((unsigned long)free_mem_ptr, boundary); p = free_mem_ptr; free_mem_ptr += size; if (free_mem_ptr >= free_mem_end_ptr) { printk(BIOS_ERR, "memalign(boundary=%zu, size=%zu): failed: ", boundary, size); printk(BIOS_ERR, "Tried to round up free_mem_ptr %p to %p\n", p, free_mem_ptr); printk(BIOS_ERR, "but free_mem_end_ptr is %p\n", free_mem_end_ptr); die("Error! memalign: Out of memory (free_mem_ptr >= free_mem_end_ptr)"); } MALLOCDBG("memalign %p\n", p); return p; }
void free(void *where) { /* Don't care */ MALLOCDBG("free %p\n", where); }