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_arch_sysarch.h (2250B)

      1/*
      2 *  i386 sysarch system call emulation
      3 *
      4 *  Copyright (c) 2013 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 BSD_USER_ARCH_SYSARCH_H_
     21#define BSD_USER_ARCH_SYSARCH_H_
     22
     23#include "target_syscall.h"
     24
     25static inline abi_long do_freebsd_arch_sysarch(CPUX86State *env, int op,
     26        abi_ulong parms)
     27{
     28    abi_long ret = 0;
     29    abi_ulong val;
     30    int idx;
     31
     32    switch (op) {
     33    case TARGET_FREEBSD_I386_SET_GSBASE:
     34    case TARGET_FREEBSD_I386_SET_FSBASE:
     35        if (op == TARGET_FREEBSD_I386_SET_GSBASE) {
     36            idx = R_GS;
     37        } else {
     38            idx = R_FS;
     39        }
     40        if (get_user(val, parms, abi_ulong)) {
     41            return -TARGET_EFAULT;
     42        }
     43        cpu_x86_load_seg(env, idx, 0);
     44        env->segs[idx].base = val;
     45        break;
     46
     47    case TARGET_FREEBSD_I386_GET_GSBASE:
     48    case TARGET_FREEBSD_I386_GET_FSBASE:
     49        if (op == TARGET_FREEBSD_I386_GET_GSBASE) {
     50            idx = R_GS;
     51        } else {
     52            idx = R_FS;
     53        }
     54        val = env->segs[idx].base;
     55        if (put_user(val, parms, abi_ulong)) {
     56            return -TARGET_EFAULT;
     57        }
     58        break;
     59
     60    /* XXX handle the others... */
     61    default:
     62        ret = -TARGET_EINVAL;
     63        break;
     64    }
     65    return ret;
     66}
     67
     68static inline void do_freebsd_arch_print_sysarch(
     69        const struct syscallname *name, abi_long arg1, abi_long arg2,
     70        abi_long arg3, abi_long arg4, abi_long arg5, abi_long arg6)
     71{
     72
     73    gemu_log("%s(%d, " TARGET_ABI_FMT_lx ", " TARGET_ABI_FMT_lx ", "
     74        TARGET_ABI_FMT_lx ")", name->name, (int)arg1, arg2, arg3, arg4);
     75}
     76
     77#endif /* !BSD_USER_ARCH_SYSARCH_H_ */