LXR qemu/bsd-user/x86_64/target_arch

   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 TARGET_ARCH_SYSARCH_H
  20#define TARGET_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 /* TARGET_ARCH_SYSARCH_H */
  77