LXR qemu/bsd-user/i386/target_arch

   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_ */
  78