1 /*
2 * Copyright 2010 Tilera Corporation. All Rights Reserved.
3 *
4 * This program is free software; you can redistribute it and/or
5 * modify it under the terms of the GNU General Public License
6 * as published by the Free Software Foundation, version 2.
7 *
8 * This program is distributed in the hope that it will be useful, but
9 * WITHOUT ANY WARRANTY; without even the implied warranty of
10 * MERCHANTABILITY OR FITNESS FOR A PARTICULAR PURPOSE, GOOD TITLE or
11 * NON INFRINGEMENT. See the GNU General Public License for
12 * more details.
13 */
14
15 #ifndef _ASM_TILE_COMPAT_H
16 #define _ASM_TILE_COMPAT_H
17
18 /*
19 * Architecture specific compatibility types
20 */
21 #include <linux/types.h>
22 #include <linux/sched.h>
23
24 #define COMPAT_USER_HZ 100
25
26 /* "long" and pointer-based types are different. */
27 typedef s32 compat_long_t;
28 typedef u32 compat_ulong_t;
29 typedef u32 compat_size_t;
30 typedef s32 compat_ssize_t;
31 typedef s32 compat_off_t;
32 typedef s32 compat_time_t;
33 typedef s32 compat_clock_t;
34 typedef u32 compat_ino_t;
35 typedef u32 compat_caddr_t;
36 typedef u32 compat_uptr_t;
37
38 /* Many types are "int" or otherwise the same. */
39 typedef __kernel_pid_t compat_pid_t;
40 typedef __kernel_uid_t __compat_uid_t;
41 typedef __kernel_gid_t __compat_gid_t;
42 typedef __kernel_uid32_t __compat_uid32_t;
43 typedef __kernel_uid32_t __compat_gid32_t;
44 typedef __kernel_mode_t compat_mode_t;
45 typedef __kernel_dev_t compat_dev_t;
46 typedef __kernel_loff_t compat_loff_t;
47 typedef __kernel_ipc_pid_t compat_ipc_pid_t;
48 typedef __kernel_daddr_t compat_daddr_t;
49 typedef __kernel_fsid_t compat_fsid_t;
50 typedef __kernel_timer_t compat_timer_t;
51 typedef __kernel_key_t compat_key_t;
52 typedef int compat_int_t;
53 typedef s64 compat_s64;
54 typedef uint compat_uint_t;
55 typedef u64 compat_u64;
56
57 /* We use the same register dump format in 32-bit images. */
58 typedef unsigned long compat_elf_greg_t;
59 #define COMPAT_ELF_NGREG (sizeof(struct pt_regs) / sizeof(compat_elf_greg_t))
60 typedef compat_elf_greg_t compat_elf_gregset_t[COMPAT_ELF_NGREG];
61
62 struct compat_timespec {
63 compat_time_t tv_sec;
64 s32 tv_nsec;
65 };
66
67 struct compat_timeval {
68 compat_time_t tv_sec;
69 s32 tv_usec;
70 };
71
72 #define compat_stat stat
73 #define compat_statfs statfs
74
75 struct compat_sysctl {
76 unsigned int name;
77 int nlen;
78 unsigned int oldval;
79 unsigned int oldlenp;
80 unsigned int newval;
81 unsigned int newlen;
82 unsigned int __unused[4];
83 };
84
85
86 struct compat_flock {
87 short l_type;
88 short l_whence;
89 compat_off_t l_start;
90 compat_off_t l_len;
91 compat_pid_t l_pid;
92 };
93
94 #define F_GETLK64 12 /* using 'struct flock64' */
95 #define F_SETLK64 13
96 #define F_SETLKW64 14
97
98 struct compat_flock64 {
99 short l_type;
100 short l_whence;
101 compat_loff_t l_start;
102 compat_loff_t l_len;
103 compat_pid_t l_pid;
104 };
105
106 #define COMPAT_RLIM_INFINITY 0xffffffff
107
108 #define _COMPAT_NSIG 64
109 #define _COMPAT_NSIG_BPW 32
110
111 typedef u32 compat_sigset_word;
112
113 typedef union compat_sigval {
114 compat_int_t sival_int;
115 compat_uptr_t sival_ptr;
116 } compat_sigval_t;
117
118 #define COMPAT_SI_PAD_SIZE (128/sizeof(int) - 3)
119
120 typedef struct compat_siginfo {
121 int si_signo;
122 int si_errno;
123 int si_code;
124
125 union {
126 int _pad[COMPAT_SI_PAD_SIZE];
127
128 /* kill() */
129 struct {
130 unsigned int _pid; /* sender's pid */
131 unsigned int _uid; /* sender's uid */
132 } _kill;
133
134 /* POSIX.1b timers */
135 struct {
136 compat_timer_t _tid; /* timer id */
137 int _overrun; /* overrun count */
138 compat_sigval_t _sigval; /* same as below */
139 int _sys_private; /* not to be passed to user */
140 int _overrun_incr; /* amount to add to overrun */
141 } _timer;
142
143 /* POSIX.1b signals */
144 struct {
145 unsigned int _pid; /* sender's pid */
146 unsigned int _uid; /* sender's uid */
147 compat_sigval_t _sigval;
148 } _rt;
149
150 /* SIGCHLD */
151 struct {
152 unsigned int _pid; /* which child */
153 unsigned int _uid; /* sender's uid */
154 int _status; /* exit code */
155 compat_clock_t _utime;
156 compat_clock_t _stime;
157 } _sigchld;
158
159 /* SIGILL, SIGFPE, SIGSEGV, SIGBUS */
160 struct {
161 unsigned int _addr; /* faulting insn/memory ref. */
162 #ifdef __ARCH_SI_TRAPNO
163 int _trapno; /* TRAP # which caused the signal */
164 #endif
165 } _sigfault;
166
167 /* SIGPOLL */
168 struct {
169 int _band; /* POLL_IN, POLL_OUT, POLL_MSG */
170 int _fd;
171 } _sigpoll;
172 } _sifields;
173 } compat_siginfo_t;
174
175 #define COMPAT_OFF_T_MAX 0x7fffffff
176 #define COMPAT_LOFF_T_MAX 0x7fffffffffffffffL
177
178 struct compat_ipc64_perm {
179 compat_key_t key;
180 __compat_uid32_t uid;
181 __compat_gid32_t gid;
182 __compat_uid32_t cuid;
183 __compat_gid32_t cgid;
184 unsigned short mode;
185 unsigned short __pad1;
186 unsigned short seq;
187 unsigned short __pad2;
188 compat_ulong_t unused1;
189 compat_ulong_t unused2;
190 };
191
192 struct compat_semid64_ds {
193 struct compat_ipc64_perm sem_perm;
194 compat_time_t sem_otime;
195 compat_ulong_t __unused1;
196 compat_time_t sem_ctime;
197 compat_ulong_t __unused2;
198 compat_ulong_t sem_nsems;
199 compat_ulong_t __unused3;
200 compat_ulong_t __unused4;
201 };
202
203 struct compat_msqid64_ds {
204 struct compat_ipc64_perm msg_perm;
205 compat_time_t msg_stime;
206 compat_ulong_t __unused1;
207 compat_time_t msg_rtime;
208 compat_ulong_t __unused2;
209 compat_time_t msg_ctime;
210 compat_ulong_t __unused3;
211 compat_ulong_t msg_cbytes;
212 compat_ulong_t msg_qnum;
213 compat_ulong_t msg_qbytes;
214 compat_pid_t msg_lspid;
215 compat_pid_t msg_lrpid;
216 compat_ulong_t __unused4;
217 compat_ulong_t __unused5;
218 };
219
220 struct compat_shmid64_ds {
221 struct compat_ipc64_perm shm_perm;
222 compat_size_t shm_segsz;
223 compat_time_t shm_atime;
224 compat_ulong_t __unused1;
225 compat_time_t shm_dtime;
226 compat_ulong_t __unused2;
227 compat_time_t shm_ctime;
228 compat_ulong_t __unused3;
229 compat_pid_t shm_cpid;
230 compat_pid_t shm_lpid;
231 compat_ulong_t shm_nattch;
232 compat_ulong_t __unused4;
233 compat_ulong_t __unused5;
234 };
235
236 /*
237 * A pointer passed in from user mode. This should not
238 * be used for syscall parameters, just declare them
239 * as pointers because the syscall entry code will have
240 * appropriately converted them already.
241 */
242
243 static inline void __user *compat_ptr(compat_uptr_t uptr)
244 {
245 return (void __user *)(long)(s32)uptr;
246 }
247
248 static inline compat_uptr_t ptr_to_compat(void __user *uptr)
249 {
250 return (u32)(unsigned long)uptr;
251 }
252
253 /* Sign-extend when storing a kernel pointer to a user's ptregs. */
254 static inline unsigned long ptr_to_compat_reg(void __user *uptr)
255 {
256 return (long)(int)(long __force)uptr;
257 }
258
259 static inline void __user *arch_compat_alloc_user_space(long len)
260 {
261 struct pt_regs *regs = task_pt_regs(current);
262 return (void __user *)regs->sp - len;
263 }
264
265 static inline int is_compat_task(void)
266 {
267 return current_thread_info()->status & TS_COMPAT;
268 }
269
270 extern int compat_setup_rt_frame(struct ksignal *ksig, sigset_t *set,
271 struct pt_regs *regs);
272
273 /* Compat syscalls. */
274 struct compat_siginfo;
275 struct compat_sigaltstack;
276 long compat_sys_rt_sigreturn(void);
277 long compat_sys_truncate64(char __user *filename, u32 dummy, u32 low, u32 high);
278 long compat_sys_ftruncate64(unsigned int fd, u32 dummy, u32 low, u32 high);
279 long compat_sys_pread64(unsigned int fd, char __user *ubuf, size_t count,
280 u32 dummy, u32 low, u32 high);
281 long compat_sys_pwrite64(unsigned int fd, char __user *ubuf, size_t count,
282 u32 dummy, u32 low, u32 high);
283 long compat_sys_sync_file_range2(int fd, unsigned int flags,
284 u32 offset_lo, u32 offset_hi,
285 u32 nbytes_lo, u32 nbytes_hi);
286 long compat_sys_fallocate(int fd, int mode,
287 u32 offset_lo, u32 offset_hi,
288 u32 len_lo, u32 len_hi);
289 long compat_sys_llseek(unsigned int fd, unsigned int offset_high,
290 unsigned int offset_low, loff_t __user * result,
291 unsigned int origin);
292
293 /* Assembly trampoline to avoid clobbering r0. */
294 long _compat_sys_rt_sigreturn(void);
295
296 #endif /* _ASM_TILE_COMPAT_H */
297
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