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3dd681d9 WD |
1 | /* |
2 | * Copyright (C) 2012 ARM Ltd. | |
3 | * | |
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. | |
7 | * | |
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. | |
12 | * | |
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/>. | |
15 | */ | |
16 | #ifndef __ASM_COMPAT_H | |
17 | #define __ASM_COMPAT_H | |
18 | #ifdef __KERNEL__ | |
19 | #ifdef CONFIG_COMPAT | |
20 | ||
21 | /* | |
22 | * Architecture specific compatibility types | |
23 | */ | |
24 | #include <linux/types.h> | |
25 | #include <linux/sched.h> | |
7ae42c96 | 26 | #include <linux/ptrace.h> |
3dd681d9 WD |
27 | |
28 | #define COMPAT_USER_HZ 100 | |
a795a38e WD |
29 | #ifdef __AARCH64EB__ |
30 | #define COMPAT_UTS_MACHINE "armv8b\0\0" | |
31 | #else | |
3dd681d9 | 32 | #define COMPAT_UTS_MACHINE "armv8l\0\0" |
a795a38e | 33 | #endif |
3dd681d9 WD |
34 | |
35 | typedef u32 compat_size_t; | |
36 | typedef s32 compat_ssize_t; | |
37 | typedef s32 compat_time_t; | |
38 | typedef s32 compat_clock_t; | |
39 | typedef s32 compat_pid_t; | |
971a5b6f VK |
40 | typedef u16 __compat_uid_t; |
41 | typedef u16 __compat_gid_t; | |
f15a2a12 CM |
42 | typedef u16 __compat_uid16_t; |
43 | typedef u16 __compat_gid16_t; | |
3dd681d9 WD |
44 | typedef u32 __compat_uid32_t; |
45 | typedef u32 __compat_gid32_t; | |
f15a2a12 | 46 | typedef u16 compat_mode_t; |
3dd681d9 WD |
47 | typedef u32 compat_ino_t; |
48 | typedef u32 compat_dev_t; | |
49 | typedef s32 compat_off_t; | |
50 | typedef s64 compat_loff_t; | |
f15a2a12 | 51 | typedef s32 compat_nlink_t; |
3dd681d9 WD |
52 | typedef u16 compat_ipc_pid_t; |
53 | typedef s32 compat_daddr_t; | |
54 | typedef u32 compat_caddr_t; | |
55 | typedef __kernel_fsid_t compat_fsid_t; | |
56 | typedef s32 compat_key_t; | |
57 | typedef s32 compat_timer_t; | |
58 | ||
f15a2a12 | 59 | typedef s16 compat_short_t; |
3dd681d9 WD |
60 | typedef s32 compat_int_t; |
61 | typedef s32 compat_long_t; | |
62 | typedef s64 compat_s64; | |
f15a2a12 | 63 | typedef u16 compat_ushort_t; |
3dd681d9 WD |
64 | typedef u32 compat_uint_t; |
65 | typedef u32 compat_ulong_t; | |
66 | typedef u64 compat_u64; | |
751f409d | 67 | typedef u32 compat_uptr_t; |
3dd681d9 WD |
68 | |
69 | struct compat_timespec { | |
70 | compat_time_t tv_sec; | |
71 | s32 tv_nsec; | |
72 | }; | |
73 | ||
74 | struct compat_timeval { | |
75 | compat_time_t tv_sec; | |
76 | s32 tv_usec; | |
77 | }; | |
78 | ||
79 | struct compat_stat { | |
a795a38e WD |
80 | #ifdef __AARCH64EB__ |
81 | short st_dev; | |
82 | short __pad1; | |
83 | #else | |
3dd681d9 | 84 | compat_dev_t st_dev; |
a795a38e | 85 | #endif |
3dd681d9 WD |
86 | compat_ino_t st_ino; |
87 | compat_mode_t st_mode; | |
f15a2a12 CM |
88 | compat_ushort_t st_nlink; |
89 | __compat_uid16_t st_uid; | |
90 | __compat_gid16_t st_gid; | |
a795a38e WD |
91 | #ifdef __AARCH64EB__ |
92 | short st_rdev; | |
93 | short __pad2; | |
94 | #else | |
3dd681d9 | 95 | compat_dev_t st_rdev; |
a795a38e | 96 | #endif |
3dd681d9 WD |
97 | compat_off_t st_size; |
98 | compat_off_t st_blksize; | |
99 | compat_off_t st_blocks; | |
100 | compat_time_t st_atime; | |
f15a2a12 | 101 | compat_ulong_t st_atime_nsec; |
3dd681d9 | 102 | compat_time_t st_mtime; |
f15a2a12 | 103 | compat_ulong_t st_mtime_nsec; |
3dd681d9 | 104 | compat_time_t st_ctime; |
f15a2a12 CM |
105 | compat_ulong_t st_ctime_nsec; |
106 | compat_ulong_t __unused4[2]; | |
3dd681d9 WD |
107 | }; |
108 | ||
109 | struct compat_flock { | |
110 | short l_type; | |
111 | short l_whence; | |
112 | compat_off_t l_start; | |
113 | compat_off_t l_len; | |
114 | compat_pid_t l_pid; | |
115 | }; | |
116 | ||
117 | #define F_GETLK64 12 /* using 'struct flock64' */ | |
118 | #define F_SETLK64 13 | |
119 | #define F_SETLKW64 14 | |
120 | ||
121 | struct compat_flock64 { | |
122 | short l_type; | |
123 | short l_whence; | |
124 | compat_loff_t l_start; | |
125 | compat_loff_t l_len; | |
126 | compat_pid_t l_pid; | |
127 | }; | |
128 | ||
129 | struct compat_statfs { | |
130 | int f_type; | |
131 | int f_bsize; | |
132 | int f_blocks; | |
133 | int f_bfree; | |
134 | int f_bavail; | |
135 | int f_files; | |
136 | int f_ffree; | |
137 | compat_fsid_t f_fsid; | |
138 | int f_namelen; /* SunOS ignores this field. */ | |
139 | int f_frsize; | |
140 | int f_flags; | |
141 | int f_spare[4]; | |
142 | }; | |
143 | ||
144 | #define COMPAT_RLIM_INFINITY 0xffffffff | |
145 | ||
146 | typedef u32 compat_old_sigset_t; | |
147 | ||
148 | #define _COMPAT_NSIG 64 | |
149 | #define _COMPAT_NSIG_BPW 32 | |
150 | ||
151 | typedef u32 compat_sigset_word; | |
152 | ||
751f409d DV |
153 | typedef union compat_sigval { |
154 | compat_int_t sival_int; | |
155 | compat_uptr_t sival_ptr; | |
156 | } compat_sigval_t; | |
157 | ||
158 | typedef struct compat_siginfo { | |
159 | int si_signo; | |
160 | int si_errno; | |
161 | int si_code; | |
162 | ||
163 | union { | |
164 | /* The padding is the same size as AArch64. */ | |
165 | int _pad[128/sizeof(int) - 3]; | |
166 | ||
167 | /* kill() */ | |
168 | struct { | |
169 | compat_pid_t _pid; /* sender's pid */ | |
170 | __compat_uid32_t _uid; /* sender's uid */ | |
171 | } _kill; | |
172 | ||
173 | /* POSIX.1b timers */ | |
174 | struct { | |
175 | compat_timer_t _tid; /* timer id */ | |
176 | int _overrun; /* overrun count */ | |
177 | compat_sigval_t _sigval; /* same as below */ | |
178 | int _sys_private; /* not to be passed to user */ | |
179 | } _timer; | |
180 | ||
181 | /* POSIX.1b signals */ | |
182 | struct { | |
183 | compat_pid_t _pid; /* sender's pid */ | |
184 | __compat_uid32_t _uid; /* sender's uid */ | |
185 | compat_sigval_t _sigval; | |
186 | } _rt; | |
187 | ||
188 | /* SIGCHLD */ | |
189 | struct { | |
190 | compat_pid_t _pid; /* which child */ | |
191 | __compat_uid32_t _uid; /* sender's uid */ | |
192 | int _status; /* exit code */ | |
193 | compat_clock_t _utime; | |
194 | compat_clock_t _stime; | |
195 | } _sigchld; | |
196 | ||
197 | /* SIGILL, SIGFPE, SIGSEGV, SIGBUS */ | |
198 | struct { | |
199 | compat_uptr_t _addr; /* faulting insn/memory ref. */ | |
200 | short _addr_lsb; /* LSB of the reported address */ | |
201 | } _sigfault; | |
202 | ||
203 | /* SIGPOLL */ | |
204 | struct { | |
205 | compat_long_t _band; /* POLL_IN, POLL_OUT, POLL_MSG */ | |
206 | int _fd; | |
207 | } _sigpoll; | |
208 | } _sifields; | |
209 | } compat_siginfo_t; | |
210 | ||
3dd681d9 WD |
211 | #define COMPAT_OFF_T_MAX 0x7fffffff |
212 | #define COMPAT_LOFF_T_MAX 0x7fffffffffffffffL | |
213 | ||
214 | /* | |
215 | * A pointer passed in from user mode. This should not | |
216 | * be used for syscall parameters, just declare them | |
217 | * as pointers because the syscall entry code will have | |
218 | * appropriately converted them already. | |
219 | */ | |
3dd681d9 WD |
220 | |
221 | static inline void __user *compat_ptr(compat_uptr_t uptr) | |
222 | { | |
223 | return (void __user *)(unsigned long)uptr; | |
224 | } | |
225 | ||
226 | static inline compat_uptr_t ptr_to_compat(void __user *uptr) | |
227 | { | |
228 | return (u32)(unsigned long)uptr; | |
229 | } | |
230 | ||
5f888a1d | 231 | #define compat_user_stack_pointer() (user_stack_pointer(current_pt_regs())) |
9b064fc3 | 232 | |
3dd681d9 WD |
233 | static inline void __user *arch_compat_alloc_user_space(long len) |
234 | { | |
9b064fc3 | 235 | return (void __user *)compat_user_stack_pointer() - len; |
3dd681d9 WD |
236 | } |
237 | ||
238 | struct compat_ipc64_perm { | |
239 | compat_key_t key; | |
240 | __compat_uid32_t uid; | |
241 | __compat_gid32_t gid; | |
242 | __compat_uid32_t cuid; | |
243 | __compat_gid32_t cgid; | |
244 | unsigned short mode; | |
245 | unsigned short __pad1; | |
246 | unsigned short seq; | |
247 | unsigned short __pad2; | |
248 | compat_ulong_t unused1; | |
249 | compat_ulong_t unused2; | |
250 | }; | |
251 | ||
252 | struct compat_semid64_ds { | |
253 | struct compat_ipc64_perm sem_perm; | |
254 | compat_time_t sem_otime; | |
255 | compat_ulong_t __unused1; | |
256 | compat_time_t sem_ctime; | |
257 | compat_ulong_t __unused2; | |
258 | compat_ulong_t sem_nsems; | |
259 | compat_ulong_t __unused3; | |
260 | compat_ulong_t __unused4; | |
261 | }; | |
262 | ||
263 | struct compat_msqid64_ds { | |
264 | struct compat_ipc64_perm msg_perm; | |
265 | compat_time_t msg_stime; | |
266 | compat_ulong_t __unused1; | |
267 | compat_time_t msg_rtime; | |
268 | compat_ulong_t __unused2; | |
269 | compat_time_t msg_ctime; | |
270 | compat_ulong_t __unused3; | |
271 | compat_ulong_t msg_cbytes; | |
272 | compat_ulong_t msg_qnum; | |
273 | compat_ulong_t msg_qbytes; | |
274 | compat_pid_t msg_lspid; | |
275 | compat_pid_t msg_lrpid; | |
276 | compat_ulong_t __unused4; | |
277 | compat_ulong_t __unused5; | |
278 | }; | |
279 | ||
280 | struct compat_shmid64_ds { | |
281 | struct compat_ipc64_perm shm_perm; | |
282 | compat_size_t shm_segsz; | |
283 | compat_time_t shm_atime; | |
284 | compat_ulong_t __unused1; | |
285 | compat_time_t shm_dtime; | |
286 | compat_ulong_t __unused2; | |
287 | compat_time_t shm_ctime; | |
288 | compat_ulong_t __unused3; | |
289 | compat_pid_t shm_cpid; | |
290 | compat_pid_t shm_lpid; | |
291 | compat_ulong_t shm_nattch; | |
292 | compat_ulong_t __unused4; | |
293 | compat_ulong_t __unused5; | |
294 | }; | |
295 | ||
296 | static inline int is_compat_task(void) | |
297 | { | |
298 | return test_thread_flag(TIF_32BIT); | |
299 | } | |
300 | ||
301 | static inline int is_compat_thread(struct thread_info *thread) | |
302 | { | |
303 | return test_ti_thread_flag(thread, TIF_32BIT); | |
304 | } | |
305 | ||
306 | #else /* !CONFIG_COMPAT */ | |
307 | ||
3dd681d9 WD |
308 | static inline int is_compat_thread(struct thread_info *thread) |
309 | { | |
310 | return 0; | |
311 | } | |
312 | ||
313 | #endif /* CONFIG_COMPAT */ | |
314 | #endif /* __KERNEL__ */ | |
315 | #endif /* __ASM_COMPAT_H */ |