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