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[mv-sheeva.git] / arch / mips / include / asm / compat.h
1 #ifndef _ASM_COMPAT_H
2 #define _ASM_COMPAT_H
3 /*
4  * Architecture specific compatibility types
5  */
6 #include <linux/thread_info.h>
7 #include <linux/types.h>
8 #include <asm/page.h>
9 #include <asm/ptrace.h>
10
11 #define COMPAT_USER_HZ  100
12
13 typedef u32             compat_size_t;
14 typedef s32             compat_ssize_t;
15 typedef s32             compat_time_t;
16 typedef s32             compat_clock_t;
17 typedef s32             compat_suseconds_t;
18
19 typedef s32             compat_pid_t;
20 typedef s32             __compat_uid_t;
21 typedef s32             __compat_gid_t;
22 typedef __compat_uid_t  __compat_uid32_t;
23 typedef __compat_gid_t  __compat_gid32_t;
24 typedef u32             compat_mode_t;
25 typedef u32             compat_ino_t;
26 typedef u32             compat_dev_t;
27 typedef s32             compat_off_t;
28 typedef s64             compat_loff_t;
29 typedef u32             compat_nlink_t;
30 typedef s32             compat_ipc_pid_t;
31 typedef s32             compat_daddr_t;
32 typedef s32             compat_caddr_t;
33 typedef struct {
34         s32     val[2];
35 } compat_fsid_t;
36 typedef s32             compat_timer_t;
37 typedef s32             compat_key_t;
38
39 typedef s32             compat_int_t;
40 typedef s32             compat_long_t;
41 typedef s64             compat_s64;
42 typedef u32             compat_uint_t;
43 typedef u32             compat_ulong_t;
44 typedef u64             compat_u64;
45
46 struct compat_timespec {
47         compat_time_t   tv_sec;
48         s32             tv_nsec;
49 };
50
51 struct compat_timeval {
52         compat_time_t   tv_sec;
53         s32             tv_usec;
54 };
55
56 struct compat_stat {
57         compat_dev_t    st_dev;
58         s32             st_pad1[3];
59         compat_ino_t    st_ino;
60         compat_mode_t   st_mode;
61         compat_nlink_t  st_nlink;
62         __compat_uid_t  st_uid;
63         __compat_gid_t  st_gid;
64         compat_dev_t    st_rdev;
65         s32             st_pad2[2];
66         compat_off_t    st_size;
67         s32             st_pad3;
68         compat_time_t   st_atime;
69         s32             st_atime_nsec;
70         compat_time_t   st_mtime;
71         s32             st_mtime_nsec;
72         compat_time_t   st_ctime;
73         s32             st_ctime_nsec;
74         s32             st_blksize;
75         s32             st_blocks;
76         s32             st_pad4[14];
77 };
78
79 struct compat_flock {
80         short           l_type;
81         short           l_whence;
82         compat_off_t    l_start;
83         compat_off_t    l_len;
84         s32             l_sysid;
85         compat_pid_t    l_pid;
86         short           __unused;
87         s32             pad[4];
88 };
89
90 #define F_GETLK64       33
91 #define F_SETLK64       34
92 #define F_SETLKW64      35
93
94 struct compat_flock64 {
95         short           l_type;
96         short           l_whence;
97         compat_loff_t   l_start;
98         compat_loff_t   l_len;
99         compat_pid_t    l_pid;
100 };
101
102 struct compat_statfs {
103         int             f_type;
104         int             f_bsize;
105         int             f_frsize;
106         int             f_blocks;
107         int             f_bfree;
108         int             f_files;
109         int             f_ffree;
110         int             f_bavail;
111         compat_fsid_t   f_fsid;
112         int             f_namelen;
113         int             f_spare[6];
114 };
115
116 #define COMPAT_RLIM_INFINITY    0x7fffffffUL
117
118 typedef u32             compat_old_sigset_t;    /* at least 32 bits */
119
120 #define _COMPAT_NSIG            128             /* Don't ask !$@#% ...  */
121 #define _COMPAT_NSIG_BPW        32
122
123 typedef u32             compat_sigset_word;
124
125 #define COMPAT_OFF_T_MAX        0x7fffffff
126 #define COMPAT_LOFF_T_MAX       0x7fffffffffffffffL
127
128 /*
129  * A pointer passed in from user mode. This should not
130  * be used for syscall parameters, just declare them
131  * as pointers because the syscall entry code will have
132  * appropriately converted them already.
133  */
134 typedef u32             compat_uptr_t;
135
136 static inline void __user *compat_ptr(compat_uptr_t uptr)
137 {
138         /* cast to a __user pointer via "unsigned long" makes sparse happy */
139         return (void __user *)(unsigned long)(long)uptr;
140 }
141
142 static inline compat_uptr_t ptr_to_compat(void __user *uptr)
143 {
144         return (u32)(unsigned long)uptr;
145 }
146
147 static inline void __user *compat_alloc_user_space(long len)
148 {
149         struct pt_regs *regs = (struct pt_regs *)
150                 ((unsigned long) current_thread_info() + THREAD_SIZE - 32) - 1;
151
152         return (void __user *) (regs->regs[29] - len);
153 }
154
155 struct compat_ipc64_perm {
156         compat_key_t key;
157         __compat_uid32_t uid;
158         __compat_gid32_t gid;
159         __compat_uid32_t cuid;
160         __compat_gid32_t cgid;
161         compat_mode_t mode;
162         unsigned short seq;
163         unsigned short __pad2;
164         compat_ulong_t __unused1;
165         compat_ulong_t __unused2;
166 };
167
168 struct compat_semid64_ds {
169         struct compat_ipc64_perm sem_perm;
170         compat_time_t   sem_otime;
171         compat_time_t   sem_ctime;
172         compat_ulong_t  sem_nsems;
173         compat_ulong_t  __unused1;
174         compat_ulong_t  __unused2;
175 };
176
177 struct compat_msqid64_ds {
178         struct compat_ipc64_perm msg_perm;
179 #ifndef CONFIG_CPU_LITTLE_ENDIAN
180         compat_ulong_t  __unused1;
181 #endif
182         compat_time_t   msg_stime;
183 #ifdef CONFIG_CPU_LITTLE_ENDIAN
184         compat_ulong_t  __unused1;
185 #endif
186 #ifndef CONFIG_CPU_LITTLE_ENDIAN
187         compat_ulong_t  __unused2;
188 #endif
189         compat_time_t   msg_rtime;
190 #ifdef CONFIG_CPU_LITTLE_ENDIAN
191         compat_ulong_t  __unused2;
192 #endif
193 #ifndef CONFIG_CPU_LITTLE_ENDIAN
194         compat_ulong_t  __unused3;
195 #endif
196         compat_time_t   msg_ctime;
197 #ifdef CONFIG_CPU_LITTLE_ENDIAN
198         compat_ulong_t  __unused3;
199 #endif
200         compat_ulong_t  msg_cbytes;
201         compat_ulong_t  msg_qnum;
202         compat_ulong_t  msg_qbytes;
203         compat_pid_t    msg_lspid;
204         compat_pid_t    msg_lrpid;
205         compat_ulong_t  __unused4;
206         compat_ulong_t  __unused5;
207 };
208
209 struct compat_shmid64_ds {
210         struct compat_ipc64_perm shm_perm;
211         compat_size_t   shm_segsz;
212         compat_time_t   shm_atime;
213         compat_time_t   shm_dtime;
214         compat_time_t   shm_ctime;
215         compat_pid_t    shm_cpid;
216         compat_pid_t    shm_lpid;
217         compat_ulong_t  shm_nattch;
218         compat_ulong_t  __unused1;
219         compat_ulong_t  __unused2;
220 };
221
222 static inline int is_compat_task(void)
223 {
224         return test_thread_flag(TIF_32BIT);
225 }
226
227 #endif /* _ASM_COMPAT_H */