bsd-user/i386/target_arch_sysarch.h

   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
  25 static 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
  68 static 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_ */