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1 | /* |
2 | * NetBSD 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_ */ |