1 /* $OpenBSD: heap.h,v 1.1 2015/09/02 01:52:25 yasuoka 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
heap_init(void)24 heap_init(void)
25 {
26 extern EFI_PHYSICAL_ADDRESS heap;
27 if (top == NULL)
28 top = (char *)(uintptr_t)heap;
29 }
30