2 * Copyright (C) 2012 ARM Ltd.
4 * This program is free software; you can redistribute it and/or modify
5 * it under the terms of the GNU General Public License version 2 as
6 * published by the Free Software Foundation.
8 * This program is distributed in the hope that it will be useful,
9 * but WITHOUT ANY WARRANTY; without even the implied warranty of
10 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
11 * GNU General Public License for more details.
13 * You should have received a copy of the GNU General Public License
14 * along with this program. If not, see <http://www.gnu.org/licenses/>.
16 #ifndef __ASM_COMPAT_H
17 #define __ASM_COMPAT_H
22 * Architecture specific compatibility types
24 #include <linux/types.h>
25 #include <linux/sched.h>
27 #define COMPAT_USER_HZ 100
28 #define COMPAT_UTS_MACHINE "armv8l\0\0"
30 typedef u32 compat_size_t;
31 typedef s32 compat_ssize_t;
32 typedef s32 compat_time_t;
33 typedef s32 compat_clock_t;
34 typedef s32 compat_pid_t;
35 typedef u32 __compat_uid_t;
36 typedef u32 __compat_gid_t;
37 typedef u32 __compat_uid32_t;
38 typedef u32 __compat_gid32_t;
39 typedef u32 compat_mode_t;
40 typedef u32 compat_ino_t;
41 typedef u32 compat_dev_t;
42 typedef s32 compat_off_t;
43 typedef s64 compat_loff_t;
44 typedef s16 compat_nlink_t;
45 typedef u16 compat_ipc_pid_t;
46 typedef s32 compat_daddr_t;
47 typedef u32 compat_caddr_t;
48 typedef __kernel_fsid_t compat_fsid_t;
49 typedef s32 compat_key_t;
50 typedef s32 compat_timer_t;
52 typedef s32 compat_int_t;
53 typedef s32 compat_long_t;
54 typedef s64 compat_s64;
55 typedef u32 compat_uint_t;
56 typedef u32 compat_ulong_t;
57 typedef u64 compat_u64;
59 struct compat_timespec {
64 struct compat_timeval {
72 compat_mode_t st_mode;
73 compat_nlink_t st_nlink;
74 __compat_uid32_t st_uid;
75 __compat_gid32_t st_gid;
78 compat_off_t st_blksize;
79 compat_off_t st_blocks;
80 compat_time_t st_atime;
82 compat_time_t st_mtime;
84 compat_time_t st_ctime;
97 #define F_GETLK64 12 /* using 'struct flock64' */
101 struct compat_flock64 {
104 compat_loff_t l_start;
109 struct compat_statfs {
117 compat_fsid_t f_fsid;
118 int f_namelen; /* SunOS ignores this field. */
124 #define COMPAT_RLIM_INFINITY 0xffffffff
126 typedef u32 compat_old_sigset_t;
128 #define _COMPAT_NSIG 64
129 #define _COMPAT_NSIG_BPW 32
131 typedef u32 compat_sigset_word;
133 #define COMPAT_OFF_T_MAX 0x7fffffff
134 #define COMPAT_LOFF_T_MAX 0x7fffffffffffffffL
137 * A pointer passed in from user mode. This should not
138 * be used for syscall parameters, just declare them
139 * as pointers because the syscall entry code will have
140 * appropriately converted them already.
142 typedef u32 compat_uptr_t;
144 static inline void __user *compat_ptr(compat_uptr_t uptr)
146 return (void __user *)(unsigned long)uptr;
149 static inline compat_uptr_t ptr_to_compat(void __user *uptr)
151 return (u32)(unsigned long)uptr;
154 static inline void __user *arch_compat_alloc_user_space(long len)
156 struct pt_regs *regs = task_pt_regs(current);
157 return (void __user *)regs->compat_sp - len;
160 struct compat_ipc64_perm {
162 __compat_uid32_t uid;
163 __compat_gid32_t gid;
164 __compat_uid32_t cuid;
165 __compat_gid32_t cgid;
167 unsigned short __pad1;
169 unsigned short __pad2;
170 compat_ulong_t unused1;
171 compat_ulong_t unused2;
174 struct compat_semid64_ds {
175 struct compat_ipc64_perm sem_perm;
176 compat_time_t sem_otime;
177 compat_ulong_t __unused1;
178 compat_time_t sem_ctime;
179 compat_ulong_t __unused2;
180 compat_ulong_t sem_nsems;
181 compat_ulong_t __unused3;
182 compat_ulong_t __unused4;
185 struct compat_msqid64_ds {
186 struct compat_ipc64_perm msg_perm;
187 compat_time_t msg_stime;
188 compat_ulong_t __unused1;
189 compat_time_t msg_rtime;
190 compat_ulong_t __unused2;
191 compat_time_t msg_ctime;
192 compat_ulong_t __unused3;
193 compat_ulong_t msg_cbytes;
194 compat_ulong_t msg_qnum;
195 compat_ulong_t msg_qbytes;
196 compat_pid_t msg_lspid;
197 compat_pid_t msg_lrpid;
198 compat_ulong_t __unused4;
199 compat_ulong_t __unused5;
202 struct compat_shmid64_ds {
203 struct compat_ipc64_perm shm_perm;
204 compat_size_t shm_segsz;
205 compat_time_t shm_atime;
206 compat_ulong_t __unused1;
207 compat_time_t shm_dtime;
208 compat_ulong_t __unused2;
209 compat_time_t shm_ctime;
210 compat_ulong_t __unused3;
211 compat_pid_t shm_cpid;
212 compat_pid_t shm_lpid;
213 compat_ulong_t shm_nattch;
214 compat_ulong_t __unused4;
215 compat_ulong_t __unused5;
218 static inline int is_compat_task(void)
220 return test_thread_flag(TIF_32BIT);
223 static inline int is_compat_thread(struct thread_info *thread)
225 return test_ti_thread_flag(thread, TIF_32BIT);
228 #else /* !CONFIG_COMPAT */
230 static inline int is_compat_task(void)
235 static inline int is_compat_thread(struct thread_info *thread)
240 #endif /* CONFIG_COMPAT */
241 #endif /* __KERNEL__ */
242 #endif /* __ASM_COMPAT_H */