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1da177e4 LT |
1 | #ifndef _ASM_COMPAT_H |
2 | #define _ASM_COMPAT_H | |
3 | /* | |
4 | * Architecture specific compatibility types | |
5 | */ | |
4302e5d5 | 6 | #include <linux/thread_info.h> |
1da177e4 LT |
7 | #include <linux/types.h> |
8 | #include <asm/page.h> | |
b7237825 | 9 | #include <asm/ptrace.h> |
1da177e4 | 10 | |
e28cbf22 CH |
11 | #define COMPAT_USER_HZ 100 |
12 | #define COMPAT_UTS_MACHINE "mips\0\0\0" | |
1da177e4 LT |
13 | |
14 | typedef u32 compat_size_t; | |
15 | typedef s32 compat_ssize_t; | |
16 | typedef s32 compat_time_t; | |
17 | typedef s32 compat_clock_t; | |
18 | typedef s32 compat_suseconds_t; | |
19 | ||
20 | typedef s32 compat_pid_t; | |
4ee1303a RB |
21 | typedef s32 __compat_uid_t; |
22 | typedef s32 __compat_gid_t; | |
23 | typedef __compat_uid_t __compat_uid32_t; | |
24 | typedef __compat_gid_t __compat_gid32_t; | |
1da177e4 LT |
25 | typedef u32 compat_mode_t; |
26 | typedef u32 compat_ino_t; | |
27 | typedef u32 compat_dev_t; | |
28 | typedef s32 compat_off_t; | |
29 | typedef s64 compat_loff_t; | |
30 | typedef u32 compat_nlink_t; | |
31 | typedef s32 compat_ipc_pid_t; | |
32 | typedef s32 compat_daddr_t; | |
33 | typedef s32 compat_caddr_t; | |
34 | typedef struct { | |
35 | s32 val[2]; | |
36 | } compat_fsid_t; | |
0d77e5a2 | 37 | typedef s32 compat_timer_t; |
05e43966 | 38 | typedef s32 compat_key_t; |
1da177e4 LT |
39 | |
40 | typedef s32 compat_int_t; | |
41 | typedef s32 compat_long_t; | |
4b777587 | 42 | typedef s64 compat_s64; |
1da177e4 LT |
43 | typedef u32 compat_uint_t; |
44 | typedef u32 compat_ulong_t; | |
4b777587 | 45 | typedef u64 compat_u64; |
751f409d | 46 | typedef u32 compat_uptr_t; |
1da177e4 LT |
47 | |
48 | struct compat_timespec { | |
49 | compat_time_t tv_sec; | |
50 | s32 tv_nsec; | |
51 | }; | |
52 | ||
53 | struct compat_timeval { | |
54 | compat_time_t tv_sec; | |
55 | s32 tv_usec; | |
56 | }; | |
57 | ||
58 | struct compat_stat { | |
59 | compat_dev_t st_dev; | |
60 | s32 st_pad1[3]; | |
61 | compat_ino_t st_ino; | |
62 | compat_mode_t st_mode; | |
63 | compat_nlink_t st_nlink; | |
4ee1303a RB |
64 | __compat_uid_t st_uid; |
65 | __compat_gid_t st_gid; | |
1da177e4 LT |
66 | compat_dev_t st_rdev; |
67 | s32 st_pad2[2]; | |
68 | compat_off_t st_size; | |
69 | s32 st_pad3; | |
70 | compat_time_t st_atime; | |
71 | s32 st_atime_nsec; | |
72 | compat_time_t st_mtime; | |
73 | s32 st_mtime_nsec; | |
74 | compat_time_t st_ctime; | |
75 | s32 st_ctime_nsec; | |
76 | s32 st_blksize; | |
77 | s32 st_blocks; | |
78 | s32 st_pad4[14]; | |
79 | }; | |
80 | ||
81 | struct compat_flock { | |
82 | short l_type; | |
83 | short l_whence; | |
84 | compat_off_t l_start; | |
85 | compat_off_t l_len; | |
86 | s32 l_sysid; | |
87 | compat_pid_t l_pid; | |
88 | short __unused; | |
89 | s32 pad[4]; | |
90 | }; | |
91 | ||
92 | #define F_GETLK64 33 | |
93 | #define F_SETLK64 34 | |
94 | #define F_SETLKW64 35 | |
95 | ||
96 | struct compat_flock64 { | |
97 | short l_type; | |
98 | short l_whence; | |
99 | compat_loff_t l_start; | |
100 | compat_loff_t l_len; | |
101 | compat_pid_t l_pid; | |
102 | }; | |
103 | ||
104 | struct compat_statfs { | |
105 | int f_type; | |
106 | int f_bsize; | |
107 | int f_frsize; | |
108 | int f_blocks; | |
109 | int f_bfree; | |
110 | int f_files; | |
111 | int f_ffree; | |
112 | int f_bavail; | |
113 | compat_fsid_t f_fsid; | |
114 | int f_namelen; | |
1448c721 EB |
115 | int f_flags; |
116 | int f_spare[5]; | |
1da177e4 LT |
117 | }; |
118 | ||
119 | #define COMPAT_RLIM_INFINITY 0x7fffffffUL | |
120 | ||
121 | typedef u32 compat_old_sigset_t; /* at least 32 bits */ | |
122 | ||
70342287 | 123 | #define _COMPAT_NSIG 128 /* Don't ask !$@#% ... */ |
1da177e4 LT |
124 | #define _COMPAT_NSIG_BPW 32 |
125 | ||
126 | typedef u32 compat_sigset_word; | |
127 | ||
751f409d DV |
128 | typedef union compat_sigval { |
129 | compat_int_t sival_int; | |
130 | compat_uptr_t sival_ptr; | |
131 | } compat_sigval_t; | |
132 | ||
133 | #define SI_PAD_SIZE32 (128/sizeof(int) - 3) | |
134 | ||
135 | typedef struct compat_siginfo { | |
136 | int si_signo; | |
137 | int si_code; | |
138 | int si_errno; | |
139 | ||
140 | union { | |
141 | int _pad[SI_PAD_SIZE32]; | |
142 | ||
143 | /* kill() */ | |
144 | struct { | |
145 | compat_pid_t _pid; /* sender's pid */ | |
146 | __compat_uid_t _uid; /* sender's uid */ | |
147 | } _kill; | |
148 | ||
149 | /* SIGCHLD */ | |
150 | struct { | |
151 | compat_pid_t _pid; /* which child */ | |
152 | __compat_uid_t _uid; /* sender's uid */ | |
153 | int _status; /* exit code */ | |
154 | compat_clock_t _utime; | |
155 | compat_clock_t _stime; | |
156 | } _sigchld; | |
157 | ||
158 | /* IRIX SIGCHLD */ | |
159 | struct { | |
160 | compat_pid_t _pid; /* which child */ | |
161 | compat_clock_t _utime; | |
162 | int _status; /* exit code */ | |
163 | compat_clock_t _stime; | |
164 | } _irix_sigchld; | |
165 | ||
166 | /* SIGILL, SIGFPE, SIGSEGV, SIGBUS */ | |
167 | struct { | |
168 | s32 _addr; /* faulting insn/memory ref. */ | |
169 | } _sigfault; | |
170 | ||
70342287 | 171 | /* SIGPOLL, SIGXFSZ (To do ...) */ |
751f409d DV |
172 | struct { |
173 | int _band; /* POLL_IN, POLL_OUT, POLL_MSG */ | |
174 | int _fd; | |
175 | } _sigpoll; | |
176 | ||
177 | /* POSIX.1b timers */ | |
178 | struct { | |
179 | timer_t _tid; /* timer id */ | |
180 | int _overrun; /* overrun count */ | |
181 | compat_sigval_t _sigval;/* same as below */ | |
70342287 | 182 | int _sys_private; /* not to be passed to user */ |
751f409d DV |
183 | } _timer; |
184 | ||
185 | /* POSIX.1b signals */ | |
186 | struct { | |
187 | compat_pid_t _pid; /* sender's pid */ | |
188 | __compat_uid_t _uid; /* sender's uid */ | |
189 | compat_sigval_t _sigval; | |
190 | } _rt; | |
191 | ||
192 | } _sifields; | |
193 | } compat_siginfo_t; | |
194 | ||
1da177e4 LT |
195 | #define COMPAT_OFF_T_MAX 0x7fffffff |
196 | #define COMPAT_LOFF_T_MAX 0x7fffffffffffffffL | |
197 | ||
198 | /* | |
199 | * A pointer passed in from user mode. This should not | |
200 | * be used for syscall parameters, just declare them | |
201 | * as pointers because the syscall entry code will have | |
8b3de0df | 202 | * appropriately converted them already. |
1da177e4 | 203 | */ |
1da177e4 | 204 | |
219ac73a | 205 | static inline void __user *compat_ptr(compat_uptr_t uptr) |
1da177e4 | 206 | { |
01bebc66 AN |
207 | /* cast to a __user pointer via "unsigned long" makes sparse happy */ |
208 | return (void __user *)(unsigned long)(long)uptr; | |
1da177e4 LT |
209 | } |
210 | ||
62ac285f IM |
211 | static inline compat_uptr_t ptr_to_compat(void __user *uptr) |
212 | { | |
213 | return (u32)(unsigned long)uptr; | |
214 | } | |
215 | ||
c41d68a5 | 216 | static inline void __user *arch_compat_alloc_user_space(long len) |
1da177e4 LT |
217 | { |
218 | struct pt_regs *regs = (struct pt_regs *) | |
219 | ((unsigned long) current_thread_info() + THREAD_SIZE - 32) - 1; | |
220 | ||
219ac73a | 221 | return (void __user *) (regs->regs[29] - len); |
1da177e4 | 222 | } |
1da177e4 | 223 | |
05e43966 AN |
224 | struct compat_ipc64_perm { |
225 | compat_key_t key; | |
226 | __compat_uid32_t uid; | |
227 | __compat_gid32_t gid; | |
228 | __compat_uid32_t cuid; | |
229 | __compat_gid32_t cgid; | |
230 | compat_mode_t mode; | |
231 | unsigned short seq; | |
232 | unsigned short __pad2; | |
233 | compat_ulong_t __unused1; | |
234 | compat_ulong_t __unused2; | |
235 | }; | |
236 | ||
237 | struct compat_semid64_ds { | |
238 | struct compat_ipc64_perm sem_perm; | |
239 | compat_time_t sem_otime; | |
240 | compat_time_t sem_ctime; | |
241 | compat_ulong_t sem_nsems; | |
242 | compat_ulong_t __unused1; | |
243 | compat_ulong_t __unused2; | |
244 | }; | |
245 | ||
246 | struct compat_msqid64_ds { | |
247 | struct compat_ipc64_perm msg_perm; | |
248 | #ifndef CONFIG_CPU_LITTLE_ENDIAN | |
249 | compat_ulong_t __unused1; | |
250 | #endif | |
251 | compat_time_t msg_stime; | |
252 | #ifdef CONFIG_CPU_LITTLE_ENDIAN | |
253 | compat_ulong_t __unused1; | |
254 | #endif | |
255 | #ifndef CONFIG_CPU_LITTLE_ENDIAN | |
256 | compat_ulong_t __unused2; | |
257 | #endif | |
258 | compat_time_t msg_rtime; | |
259 | #ifdef CONFIG_CPU_LITTLE_ENDIAN | |
260 | compat_ulong_t __unused2; | |
261 | #endif | |
262 | #ifndef CONFIG_CPU_LITTLE_ENDIAN | |
263 | compat_ulong_t __unused3; | |
264 | #endif | |
265 | compat_time_t msg_ctime; | |
266 | #ifdef CONFIG_CPU_LITTLE_ENDIAN | |
267 | compat_ulong_t __unused3; | |
268 | #endif | |
269 | compat_ulong_t msg_cbytes; | |
270 | compat_ulong_t msg_qnum; | |
271 | compat_ulong_t msg_qbytes; | |
272 | compat_pid_t msg_lspid; | |
273 | compat_pid_t msg_lrpid; | |
274 | compat_ulong_t __unused4; | |
275 | compat_ulong_t __unused5; | |
276 | }; | |
277 | ||
278 | struct compat_shmid64_ds { | |
279 | struct compat_ipc64_perm shm_perm; | |
280 | compat_size_t shm_segsz; | |
281 | compat_time_t shm_atime; | |
282 | compat_time_t shm_dtime; | |
283 | compat_time_t shm_ctime; | |
284 | compat_pid_t shm_cpid; | |
285 | compat_pid_t shm_lpid; | |
286 | compat_ulong_t shm_nattch; | |
287 | compat_ulong_t __unused1; | |
288 | compat_ulong_t __unused2; | |
289 | }; | |
290 | ||
ea536ad4 AV |
291 | /* MIPS has unusual order of fields in stack_t */ |
292 | typedef struct compat_sigaltstack { | |
293 | compat_uptr_t ss_sp; | |
294 | compat_size_t ss_size; | |
295 | int ss_flags; | |
296 | } compat_stack_t; | |
297 | #define compat_sigaltstack compat_sigaltstack | |
298 | ||
4302e5d5 RB |
299 | static inline int is_compat_task(void) |
300 | { | |
6ad560b4 | 301 | return test_thread_flag(TIF_32BIT_ADDR); |
4302e5d5 RB |
302 | } |
303 | ||
1da177e4 | 304 | #endif /* _ASM_COMPAT_H */ |