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 
24 static 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 
67 static 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