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 TARGET_ARCH_SYSARCH_H
21 #define TARGET_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 /* TARGET_ARCH_SYSARCH_H */
78