cachepc-qemu

Fork of AMDESE/qemu with changes for cachepc side-channel attack
git clone https://git.sinitax.com/sinitax/cachepc-qemu
Log | Files | Refs | Submodules | LICENSE | sfeed.txt

target_os_stack.h (1613B)

      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
     25static 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_ */