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>
26 #include <linux/ptrace.h>
28 #define COMPAT_USER_HZ 100
29 #define COMPAT_UTS_MACHINE "armv8l\0\0"
31 typedef u32 compat_size_t
;
32 typedef s32 compat_ssize_t
;
33 typedef s32 compat_time_t
;
34 typedef s32 compat_clock_t
;
35 typedef s32 compat_pid_t
;
36 typedef u32 __compat_uid_t
;
37 typedef u32 __compat_gid_t
;
38 typedef u16 __compat_uid16_t
;
39 typedef u16 __compat_gid16_t
;
40 typedef u32 __compat_uid32_t
;
41 typedef u32 __compat_gid32_t
;
42 typedef u16 compat_mode_t
;
43 typedef u32 compat_ino_t
;
44 typedef u32 compat_dev_t
;
45 typedef s32 compat_off_t
;
46 typedef s64 compat_loff_t
;
47 typedef s32 compat_nlink_t
;
48 typedef u16 compat_ipc_pid_t
;
49 typedef s32 compat_daddr_t
;
50 typedef u32 compat_caddr_t
;
51 typedef __kernel_fsid_t compat_fsid_t
;
52 typedef s32 compat_key_t
;
53 typedef s32 compat_timer_t
;
55 typedef s16 compat_short_t
;
56 typedef s32 compat_int_t
;
57 typedef s32 compat_long_t
;
58 typedef s64 compat_s64
;
59 typedef u16 compat_ushort_t
;
60 typedef u32 compat_uint_t
;
61 typedef u32 compat_ulong_t
;
62 typedef u64 compat_u64
;
63 typedef u32 compat_uptr_t
;
65 struct compat_timespec
{
70 struct compat_timeval
{
78 compat_mode_t st_mode
;
79 compat_ushort_t st_nlink
;
80 __compat_uid16_t st_uid
;
81 __compat_gid16_t st_gid
;
84 compat_off_t st_blksize
;
85 compat_off_t st_blocks
;
86 compat_time_t st_atime
;
87 compat_ulong_t st_atime_nsec
;
88 compat_time_t st_mtime
;
89 compat_ulong_t st_mtime_nsec
;
90 compat_time_t st_ctime
;
91 compat_ulong_t st_ctime_nsec
;
92 compat_ulong_t __unused4
[2];
103 #define F_GETLK64 12 /* using 'struct flock64' */
105 #define F_SETLKW64 14
107 struct compat_flock64
{
110 compat_loff_t l_start
;
115 struct compat_statfs
{
123 compat_fsid_t f_fsid
;
124 int f_namelen
; /* SunOS ignores this field. */
130 #define COMPAT_RLIM_INFINITY 0xffffffff
132 typedef u32 compat_old_sigset_t
;
134 #define _COMPAT_NSIG 64
135 #define _COMPAT_NSIG_BPW 32
137 typedef u32 compat_sigset_word
;
139 typedef union compat_sigval
{
140 compat_int_t sival_int
;
141 compat_uptr_t sival_ptr
;
144 typedef struct compat_siginfo
{
150 /* The padding is the same size as AArch64. */
151 int _pad
[128/sizeof(int) - 3];
155 compat_pid_t _pid
; /* sender's pid */
156 __compat_uid32_t _uid
; /* sender's uid */
159 /* POSIX.1b timers */
161 compat_timer_t _tid
; /* timer id */
162 int _overrun
; /* overrun count */
163 compat_sigval_t _sigval
; /* same as below */
164 int _sys_private
; /* not to be passed to user */
167 /* POSIX.1b signals */
169 compat_pid_t _pid
; /* sender's pid */
170 __compat_uid32_t _uid
; /* sender's uid */
171 compat_sigval_t _sigval
;
176 compat_pid_t _pid
; /* which child */
177 __compat_uid32_t _uid
; /* sender's uid */
178 int _status
; /* exit code */
179 compat_clock_t _utime
;
180 compat_clock_t _stime
;
183 /* SIGILL, SIGFPE, SIGSEGV, SIGBUS */
185 compat_uptr_t _addr
; /* faulting insn/memory ref. */
186 short _addr_lsb
; /* LSB of the reported address */
191 compat_long_t _band
; /* POLL_IN, POLL_OUT, POLL_MSG */
197 #define COMPAT_OFF_T_MAX 0x7fffffff
198 #define COMPAT_LOFF_T_MAX 0x7fffffffffffffffL
201 * A pointer passed in from user mode. This should not
202 * be used for syscall parameters, just declare them
203 * as pointers because the syscall entry code will have
204 * appropriately converted them already.
207 static inline void __user
*compat_ptr(compat_uptr_t uptr
)
209 return (void __user
*)(unsigned long)uptr
;
212 static inline compat_uptr_t
ptr_to_compat(void __user
*uptr
)
214 return (u32
)(unsigned long)uptr
;
217 #define compat_user_stack_pointer() (current_pt_regs()->compat_sp)
219 static inline void __user
*arch_compat_alloc_user_space(long len
)
221 return (void __user
*)compat_user_stack_pointer() - len
;
224 struct compat_ipc64_perm
{
226 __compat_uid32_t uid
;
227 __compat_gid32_t gid
;
228 __compat_uid32_t cuid
;
229 __compat_gid32_t cgid
;
231 unsigned short __pad1
;
233 unsigned short __pad2
;
234 compat_ulong_t unused1
;
235 compat_ulong_t unused2
;
238 struct compat_semid64_ds
{
239 struct compat_ipc64_perm sem_perm
;
240 compat_time_t sem_otime
;
241 compat_ulong_t __unused1
;
242 compat_time_t sem_ctime
;
243 compat_ulong_t __unused2
;
244 compat_ulong_t sem_nsems
;
245 compat_ulong_t __unused3
;
246 compat_ulong_t __unused4
;
249 struct compat_msqid64_ds
{
250 struct compat_ipc64_perm msg_perm
;
251 compat_time_t msg_stime
;
252 compat_ulong_t __unused1
;
253 compat_time_t msg_rtime
;
254 compat_ulong_t __unused2
;
255 compat_time_t msg_ctime
;
256 compat_ulong_t __unused3
;
257 compat_ulong_t msg_cbytes
;
258 compat_ulong_t msg_qnum
;
259 compat_ulong_t msg_qbytes
;
260 compat_pid_t msg_lspid
;
261 compat_pid_t msg_lrpid
;
262 compat_ulong_t __unused4
;
263 compat_ulong_t __unused5
;
266 struct compat_shmid64_ds
{
267 struct compat_ipc64_perm shm_perm
;
268 compat_size_t shm_segsz
;
269 compat_time_t shm_atime
;
270 compat_ulong_t __unused1
;
271 compat_time_t shm_dtime
;
272 compat_ulong_t __unused2
;
273 compat_time_t shm_ctime
;
274 compat_ulong_t __unused3
;
275 compat_pid_t shm_cpid
;
276 compat_pid_t shm_lpid
;
277 compat_ulong_t shm_nattch
;
278 compat_ulong_t __unused4
;
279 compat_ulong_t __unused5
;
282 static inline int is_compat_task(void)
284 return test_thread_flag(TIF_32BIT
);
287 static inline int is_compat_thread(struct thread_info
*thread
)
289 return test_ti_thread_flag(thread
, TIF_32BIT
);
292 #else /* !CONFIG_COMPAT */
294 static inline int is_compat_task(void)
299 static inline int is_compat_thread(struct thread_info
*thread
)
304 #endif /* CONFIG_COMPAT */
305 #endif /* __KERNEL__ */
306 #endif /* __ASM_COMPAT_H */