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;
58 typedef u32 compat_uptr_t;
60 struct compat_timespec {
65 struct compat_timeval {
73 compat_mode_t st_mode;
74 compat_nlink_t st_nlink;
75 __compat_uid32_t st_uid;
76 __compat_gid32_t st_gid;
79 compat_off_t st_blksize;
80 compat_off_t st_blocks;
81 compat_time_t st_atime;
83 compat_time_t st_mtime;
85 compat_time_t st_ctime;
98 #define F_GETLK64 12 /* using 'struct flock64' */
100 #define F_SETLKW64 14
102 struct compat_flock64 {
105 compat_loff_t l_start;
110 struct compat_statfs {
118 compat_fsid_t f_fsid;
119 int f_namelen; /* SunOS ignores this field. */
125 #define COMPAT_RLIM_INFINITY 0xffffffff
127 typedef u32 compat_old_sigset_t;
129 #define _COMPAT_NSIG 64
130 #define _COMPAT_NSIG_BPW 32
132 typedef u32 compat_sigset_word;
134 typedef union compat_sigval {
135 compat_int_t sival_int;
136 compat_uptr_t sival_ptr;
139 typedef struct compat_siginfo {
145 /* The padding is the same size as AArch64. */
146 int _pad[128/sizeof(int) - 3];
150 compat_pid_t _pid; /* sender's pid */
151 __compat_uid32_t _uid; /* sender's uid */
154 /* POSIX.1b timers */
156 compat_timer_t _tid; /* timer id */
157 int _overrun; /* overrun count */
158 compat_sigval_t _sigval; /* same as below */
159 int _sys_private; /* not to be passed to user */
162 /* POSIX.1b signals */
164 compat_pid_t _pid; /* sender's pid */
165 __compat_uid32_t _uid; /* sender's uid */
166 compat_sigval_t _sigval;
171 compat_pid_t _pid; /* which child */
172 __compat_uid32_t _uid; /* sender's uid */
173 int _status; /* exit code */
174 compat_clock_t _utime;
175 compat_clock_t _stime;
178 /* SIGILL, SIGFPE, SIGSEGV, SIGBUS */
180 compat_uptr_t _addr; /* faulting insn/memory ref. */
181 short _addr_lsb; /* LSB of the reported address */
186 compat_long_t _band; /* POLL_IN, POLL_OUT, POLL_MSG */
192 #define COMPAT_OFF_T_MAX 0x7fffffff
193 #define COMPAT_LOFF_T_MAX 0x7fffffffffffffffL
196 * A pointer passed in from user mode. This should not
197 * be used for syscall parameters, just declare them
198 * as pointers because the syscall entry code will have
199 * appropriately converted them already.
202 static inline void __user *compat_ptr(compat_uptr_t uptr)
204 return (void __user *)(unsigned long)uptr;
207 static inline compat_uptr_t ptr_to_compat(void __user *uptr)
209 return (u32)(unsigned long)uptr;
212 static inline void __user *arch_compat_alloc_user_space(long len)
214 struct pt_regs *regs = task_pt_regs(current);
215 return (void __user *)regs->compat_sp - len;
218 struct compat_ipc64_perm {
220 __compat_uid32_t uid;
221 __compat_gid32_t gid;
222 __compat_uid32_t cuid;
223 __compat_gid32_t cgid;
225 unsigned short __pad1;
227 unsigned short __pad2;
228 compat_ulong_t unused1;
229 compat_ulong_t unused2;
232 struct compat_semid64_ds {
233 struct compat_ipc64_perm sem_perm;
234 compat_time_t sem_otime;
235 compat_ulong_t __unused1;
236 compat_time_t sem_ctime;
237 compat_ulong_t __unused2;
238 compat_ulong_t sem_nsems;
239 compat_ulong_t __unused3;
240 compat_ulong_t __unused4;
243 struct compat_msqid64_ds {
244 struct compat_ipc64_perm msg_perm;
245 compat_time_t msg_stime;
246 compat_ulong_t __unused1;
247 compat_time_t msg_rtime;
248 compat_ulong_t __unused2;
249 compat_time_t msg_ctime;
250 compat_ulong_t __unused3;
251 compat_ulong_t msg_cbytes;
252 compat_ulong_t msg_qnum;
253 compat_ulong_t msg_qbytes;
254 compat_pid_t msg_lspid;
255 compat_pid_t msg_lrpid;
256 compat_ulong_t __unused4;
257 compat_ulong_t __unused5;
260 struct compat_shmid64_ds {
261 struct compat_ipc64_perm shm_perm;
262 compat_size_t shm_segsz;
263 compat_time_t shm_atime;
264 compat_ulong_t __unused1;
265 compat_time_t shm_dtime;
266 compat_ulong_t __unused2;
267 compat_time_t shm_ctime;
268 compat_ulong_t __unused3;
269 compat_pid_t shm_cpid;
270 compat_pid_t shm_lpid;
271 compat_ulong_t shm_nattch;
272 compat_ulong_t __unused4;
273 compat_ulong_t __unused5;
276 static inline int is_compat_task(void)
278 return test_thread_flag(TIF_32BIT);
281 static inline int is_compat_thread(struct thread_info *thread)
283 return test_ti_thread_flag(thread, TIF_32BIT);
286 #else /* !CONFIG_COMPAT */
288 static inline int is_compat_task(void)
293 static inline int is_compat_thread(struct thread_info *thread)
298 #endif /* CONFIG_COMPAT */
299 #endif /* __KERNEL__ */
300 #endif /* __ASM_COMPAT_H */