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 (2219B)

      1/*
      2 *  x86_64 sysarch() syscall emulation
      3 *
      4 *
      5 *  This program is free software; you can redistribute it and/or modify
      6 *  it under the terms of the GNU General Public License as published by
      7 *  the Free Software Foundation; either version 2 of the License, or
      8 *  (at your option) any later version.
      9 *
     10 *  This program is distributed in the hope that it will be useful,
     11 *  but WITHOUT ANY WARRANTY; without even the implied warranty of
     12 *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
     13 *  GNU General Public License for more details.
     14 *
     15 *  You should have received a copy of the GNU General Public License
     16 *  along with this program; if not, see <http://www.gnu.org/licenses/>.
     17 */
     18
     19#ifndef BSD_USER_ARCH_SYSARCH_H_
     20#define BSD_USER_ARCH_SYSARCH_H_
     21
     22#include "target_syscall.h"
     23
     24static inline abi_long do_freebsd_arch_sysarch(CPUX86State *env, int op,
     25        abi_ulong parms)
     26{
     27    abi_long ret = 0;
     28    abi_ulong val;
     29    int idx;
     30
     31    switch (op) {
     32    case TARGET_FREEBSD_AMD64_SET_GSBASE:
     33    case TARGET_FREEBSD_AMD64_SET_FSBASE:
     34        if (op == TARGET_FREEBSD_AMD64_SET_GSBASE) {
     35            idx = R_GS;
     36        } else {
     37            idx = R_FS;
     38        }
     39        if (get_user(val, parms, abi_ulong)) {
     40            return -TARGET_EFAULT;
     41        }
     42        cpu_x86_load_seg(env, idx, 0);
     43        env->segs[idx].base = val;
     44        break;
     45
     46    case TARGET_FREEBSD_AMD64_GET_GSBASE:
     47    case TARGET_FREEBSD_AMD64_GET_FSBASE:
     48        if (op == TARGET_FREEBSD_AMD64_GET_GSBASE) {
     49            idx = R_GS;
     50        } else {
     51            idx = R_FS;
     52        }
     53        val = env->segs[idx].base;
     54        if (put_user(val, parms, abi_ulong)) {
     55            return -TARGET_EFAULT;
     56        }
     57        break;
     58
     59    /* XXX handle the others... */
     60    default:
     61        ret = -TARGET_EINVAL;
     62        break;
     63    }
     64    return ret;
     65}
     66
     67static inline void do_freebsd_arch_print_sysarch(
     68        const struct syscallname *name, abi_long arg1, abi_long arg2,
     69        abi_long arg3, abi_long arg4, abi_long arg5, abi_long arg6)
     70{
     71
     72    gemu_log("%s(%d, " TARGET_ABI_FMT_lx ", " TARGET_ABI_FMT_lx ", "
     73        TARGET_ABI_FMT_lx ")", name->name, (int)arg1, arg2, arg3, arg4);
     74}
     75
     76#endif /*! BSD_USER_ARCH_SYSARCH_H_ */