4 * Architecture specific compatibility types
6 #include <linux/thread_info.h>
7 #include <linux/types.h>
9 #include <asm/ptrace.h>
11 #define COMPAT_USER_HZ 100
12 #define COMPAT_UTS_MACHINE "mips\0\0\0"
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;
20 typedef s32 compat_pid_t;
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;
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;
37 typedef s32 compat_timer_t;
38 typedef s32 compat_key_t;
40 typedef s32 compat_int_t;
41 typedef s32 compat_long_t;
42 typedef s64 compat_s64;
43 typedef u32 compat_uint_t;
44 typedef u32 compat_ulong_t;
45 typedef u64 compat_u64;
46 typedef u32 compat_uptr_t;
48 struct compat_timespec {
53 struct compat_timeval {
62 compat_mode_t st_mode;
63 compat_nlink_t st_nlink;
64 __compat_uid_t st_uid;
65 __compat_gid_t st_gid;
70 compat_time_t st_atime;
72 compat_time_t st_mtime;
74 compat_time_t st_ctime;
96 struct compat_flock64 {
99 compat_loff_t l_start;
104 struct compat_statfs {
113 compat_fsid_t f_fsid;
119 #define COMPAT_RLIM_INFINITY 0x7fffffffUL
121 typedef u32 compat_old_sigset_t; /* at least 32 bits */
123 #define _COMPAT_NSIG 128 /* Don't ask !$@#% ... */
124 #define _COMPAT_NSIG_BPW 32
126 typedef u32 compat_sigset_word;
128 typedef union compat_sigval {
129 compat_int_t sival_int;
130 compat_uptr_t sival_ptr;
133 #define SI_PAD_SIZE32 (128/sizeof(int) - 3)
135 typedef struct compat_siginfo {
141 int _pad[SI_PAD_SIZE32];
145 compat_pid_t _pid; /* sender's pid */
146 __compat_uid_t _uid; /* sender's uid */
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;
160 compat_pid_t _pid; /* which child */
161 compat_clock_t _utime;
162 int _status; /* exit code */
163 compat_clock_t _stime;
166 /* SIGILL, SIGFPE, SIGSEGV, SIGBUS */
168 s32 _addr; /* faulting insn/memory ref. */
171 /* SIGPOLL, SIGXFSZ (To do ...) */
173 int _band; /* POLL_IN, POLL_OUT, POLL_MSG */
177 /* POSIX.1b timers */
179 timer_t _tid; /* timer id */
180 int _overrun; /* overrun count */
181 compat_sigval_t _sigval;/* same as below */
182 int _sys_private; /* not to be passed to user */
185 /* POSIX.1b signals */
187 compat_pid_t _pid; /* sender's pid */
188 __compat_uid_t _uid; /* sender's uid */
189 compat_sigval_t _sigval;
195 #define COMPAT_OFF_T_MAX 0x7fffffff
196 #define COMPAT_LOFF_T_MAX 0x7fffffffffffffffL
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
202 * appropriately converted them already.
205 static inline void __user *compat_ptr(compat_uptr_t uptr)
207 /* cast to a __user pointer via "unsigned long" makes sparse happy */
208 return (void __user *)(unsigned long)(long)uptr;
211 static inline compat_uptr_t ptr_to_compat(void __user *uptr)
213 return (u32)(unsigned long)uptr;
216 static inline void __user *arch_compat_alloc_user_space(long len)
218 struct pt_regs *regs = (struct pt_regs *)
219 ((unsigned long) current_thread_info() + THREAD_SIZE - 32) - 1;
221 return (void __user *) (regs->regs[29] - 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;
232 unsigned short __pad2;
233 compat_ulong_t __unused1;
234 compat_ulong_t __unused2;
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;
246 struct compat_msqid64_ds {
247 struct compat_ipc64_perm msg_perm;
248 #ifndef CONFIG_CPU_LITTLE_ENDIAN
249 compat_ulong_t __unused1;
251 compat_time_t msg_stime;
252 #ifdef CONFIG_CPU_LITTLE_ENDIAN
253 compat_ulong_t __unused1;
255 #ifndef CONFIG_CPU_LITTLE_ENDIAN
256 compat_ulong_t __unused2;
258 compat_time_t msg_rtime;
259 #ifdef CONFIG_CPU_LITTLE_ENDIAN
260 compat_ulong_t __unused2;
262 #ifndef CONFIG_CPU_LITTLE_ENDIAN
263 compat_ulong_t __unused3;
265 compat_time_t msg_ctime;
266 #ifdef CONFIG_CPU_LITTLE_ENDIAN
267 compat_ulong_t __unused3;
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;
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;
291 /* MIPS has unusual order of fields in stack_t */
292 typedef struct compat_sigaltstack {
294 compat_size_t ss_size;
297 #define compat_sigaltstack compat_sigaltstack
299 static inline int is_compat_task(void)
301 return test_thread_flag(TIF_32BIT_ADDR);
304 #endif /* _ASM_COMPAT_H */