Merge tag 'edgar/xilinx-next-2022-09-21.for-upstream' of https://github.com/edgarigl...
[qemu.git] / bsd-user / openbsd / target_os_stack.h
1 /*
2 * OpenBSD setup_initial_stack() implementation.
3 *
4 * Copyright (c) 2013-14 Stacey D. Son
5 *
6 * This program is free software; you can redistribute it and/or modify
7 * it under the terms of the GNU General Public License as published by
8 * the Free Software Foundation; either version 2 of the License, or
9 * (at your option) any later version.
10 *
11 * This program is distributed in the hope that it will be useful,
12 * but WITHOUT ANY WARRANTY; without even the implied warranty of
13 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
14 * GNU General Public License for more details.
15 *
16 * You should have received a copy of the GNU General Public License
17 * along with this program; if not, see <http://www.gnu.org/licenses/>.
18 */
19
20 #ifndef _TARGET_OS_STACK_H_
21 #define _TARGET_OS_STACK_H_
22
23 #include "target_arch_sigtramp.h"
24
25 static inline int setup_initial_stack(struct bsd_binprm *bprm, abi_ulong *p,
26 abi_ulong *stringp)
27 {
28 int i;
29 abi_ulong stack_base;
30
31 stack_base = (target_stkbas + target_stksiz) -
32 MAX_ARG_PAGES * TARGET_PAGE_SIZE;
33 if (p) {
34 *p = stack_base;
35 }
36 if (stringp) {
37 *stringp = stack_base;
38 }
39
40 for (i = 0; i < MAX_ARG_PAGES; i++) {
41 if (bprm->page[i]) {
42 info->rss++;
43 if (!memcpy_to_target(stack_base, bprm->page[i],
44 TARGET_PAGE_SIZE)) {
45 errno = EFAULT;
46 return -1;
47 }
48 g_free(bprm->page[i]);
49 }
50 stack_base += TARGET_PAGE_SIZE;
51 }
52
53 return 0;
54 }
55
56 #endif /* !_TARGET_OS_STACK_H_ */