1 /* $OpenBSD: heap.h,v 1.1 2016/05/14 17:55:15 kettenis Exp $ */ 2 3 /* 4 * Copyright (c) 2015 YASUOKA Masahiko <yasuoka@yasuoka.net> 5 * 6 * Permission to use, copy, modify, and distribute this software for any 7 * purpose with or without fee is hereby granted, provided that the above 8 * copyright notice and this permission notice appear in all copies. 9 * 10 * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES 11 * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF 12 * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR 13 * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES 14 * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN 15 * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF 16 * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE. 17 */ 18 #include <efi.h> 19 20 static char *top = NULL; 21 #define NEEDS_HEAP_INIT 1 22 23 static void 24 heap_init(void) 25 { 26 extern EFI_PHYSICAL_ADDRESS heap; 27 if (top == NULL) 28 top = (char *)(uintptr_t)heap; 29 } 30