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_ */ 57