aboutsummaryrefslogtreecommitdiff
path: root/arch/tile/include/asm/compat.h
blob: 3063e6fc8daaa0dd3dd982a857889ffec74f451e (plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304
305
306
307
308
309
310
311
312
313
314
/*
 * Copyright 2010 Tilera Corporation. All Rights Reserved.
 *
 *   This program is free software; you can redistribute it and/or
 *   modify it under the terms of the GNU General Public License
 *   as published by the Free Software Foundation, version 2.
 *
 *   This program is distributed in the hope that it will be useful, but
 *   WITHOUT ANY WARRANTY; without even the implied warranty of
 *   MERCHANTABILITY OR FITNESS FOR A PARTICULAR PURPOSE, GOOD TITLE or
 *   NON INFRINGEMENT.  See the GNU General Public License for
 *   more details.
 */

#ifndef _ASM_TILE_COMPAT_H
#define _ASM_TILE_COMPAT_H

/*
 * Architecture specific compatibility types
 */
#include <linux/types.h>
#include <linux/sched.h>

#define COMPAT_USER_HZ	100

/* "long" and pointer-based types are different. */
typedef s32		compat_long_t;
typedef u32		compat_ulong_t;
typedef u32		compat_size_t;
typedef s32		compat_ssize_t;
typedef s32		compat_off_t;
typedef s32		compat_time_t;
typedef s32		compat_clock_t;
typedef u32		compat_ino_t;
typedef u32		compat_caddr_t;
typedef	u32		compat_uptr_t;

/* Many types are "int" or otherwise the same. */
typedef __kernel_pid_t compat_pid_t;
typedef __kernel_uid_t __compat_uid_t;
typedef __kernel_gid_t __compat_gid_t;
typedef __kernel_uid32_t __compat_uid32_t;
typedef __kernel_uid32_t __compat_gid32_t;
typedef __kernel_mode_t compat_mode_t;
typedef __kernel_dev_t compat_dev_t;
typedef __kernel_loff_t compat_loff_t;
typedef __kernel_ipc_pid_t compat_ipc_pid_t;
typedef __kernel_daddr_t compat_daddr_t;
typedef __kernel_fsid_t	compat_fsid_t;
typedef __kernel_timer_t compat_timer_t;
typedef __kernel_key_t compat_key_t;
typedef int compat_int_t;
typedef s64 compat_s64;
typedef uint compat_uint_t;
typedef u64 compat_u64;

/* We use the same register dump format in 32-bit images. */
typedef unsigned long compat_elf_greg_t;
#define COMPAT_ELF_NGREG (sizeof(struct pt_regs) / sizeof(compat_elf_greg_t))
typedef compat_elf_greg_t compat_elf_gregset_t[COMPAT_ELF_NGREG];

struct compat_timespec {
	compat_time_t	tv_sec;
	s32		tv_nsec;
};

struct compat_timeval {
	compat_time_t	tv_sec;
	s32		tv_usec;
};

#define compat_stat stat
#define compat_statfs statfs

struct compat_sysctl {
	unsigned int	name;
	int		nlen;
	unsigned int	oldval;
	unsigned int	oldlenp;
	unsigned int	newval;
	unsigned int	newlen;
	unsigned int	__unused[4];
};


struct compat_flock {
	short		l_type;
	short		l_whence;
	compat_off_t	l_start;
	compat_off_t	l_len;
	compat_pid_t	l_pid;
};

#define F_GETLK64	12	/*  using 'struct flock64' */
#define F_SETLK64	13
#define F_SETLKW64	14

struct compat_flock64 {
	short		l_type;
	short		l_whence;
	compat_loff_t	l_start;
	compat_loff_t	l_len;
	compat_pid_t	l_pid;
};

#define COMPAT_RLIM_INFINITY		0xffffffff

#define _COMPAT_NSIG		64
#define _COMPAT_NSIG_BPW	32

typedef u32               compat_sigset_word;

typedef union compat_sigval {
	compat_int_t	sival_int;
	compat_uptr_t	sival_ptr;
} compat_sigval_t;

#define COMPAT_SI_PAD_SIZE	(128/sizeof(int) - 3)

typedef struct compat_siginfo {
	int si_signo;
	int si_errno;
	int si_code;

	union {
		int _pad[COMPAT_SI_PAD_SIZE];

		/* kill() */
		struct {
			unsigned int _pid;	/* sender's pid */
			unsigned int _uid;	/* sender's uid */
		} _kill;

		/* POSIX.1b timers */
		struct {
			compat_timer_t _tid;	/* timer id */
			int _overrun;		/* overrun count */
			compat_sigval_t _sigval;	/* same as below */
			int _sys_private;	/* not to be passed to user */
			int _overrun_incr;	/* amount to add to overrun */
		} _timer;

		/* POSIX.1b signals */
		struct {
			unsigned int _pid;	/* sender's pid */
			unsigned int _uid;	/* sender's uid */
			compat_sigval_t _sigval;
		} _rt;

		/* SIGCHLD */
		struct {
			unsigned int _pid;	/* which child */
			unsigned int _uid;	/* sender's uid */
			int _status;		/* exit code */
			compat_clock_t _utime;
			compat_clock_t _stime;
		} _sigchld;

		/* SIGILL, SIGFPE, SIGSEGV, SIGBUS */
		struct {
			unsigned int _addr;	/* faulting insn/memory ref. */
#ifdef __ARCH_SI_TRAPNO
			int _trapno;	/* TRAP # which caused the signal */
#endif
		} _sigfault;

		/* SIGPOLL */
		struct {
			int _band;	/* POLL_IN, POLL_OUT, POLL_MSG */
			int _fd;
		} _sigpoll;
	} _sifields;
} compat_siginfo_t;

#define COMPAT_OFF_T_MAX	0x7fffffff
#define COMPAT_LOFF_T_MAX	0x7fffffffffffffffL

struct compat_ipc64_perm {
	compat_key_t key;
	__compat_uid32_t uid;
	__compat_gid32_t gid;
	__compat_uid32_t cuid;
	__compat_gid32_t cgid;
	unsigned short mode;
	unsigned short __pad1;
	unsigned short seq;
	unsigned short __pad2;
	compat_ulong_t unused1;
	compat_ulong_t unused2;
};

struct compat_semid64_ds {
	struct compat_ipc64_perm sem_perm;
	compat_time_t  sem_otime;
	compat_ulong_t __unused1;
	compat_time_t  sem_ctime;
	compat_ulong_t __unused2;
	compat_ulong_t sem_nsems;
	compat_ulong_t __unused3;
	compat_ulong_t __unused4;
};

struct compat_msqid64_ds {
	struct compat_ipc64_perm msg_perm;
	compat_time_t  msg_stime;
	compat_ulong_t __unused1;
	compat_time_t  msg_rtime;
	compat_ulong_t __unused2;
	compat_time_t  msg_ctime;
	compat_ulong_t __unused3;
	compat_ulong_t msg_cbytes;
	compat_ulong_t msg_qnum;
	compat_ulong_t msg_qbytes;
	compat_pid_t   msg_lspid;
	compat_pid_t   msg_lrpid;
	compat_ulong_t __unused4;
	compat_ulong_t __unused5;
};

struct compat_shmid64_ds {
	struct compat_ipc64_perm shm_perm;
	compat_size_t  shm_segsz;
	compat_time_t  shm_atime;
	compat_ulong_t __unused1;
	compat_time_t  shm_dtime;
	compat_ulong_t __unused2;
	compat_time_t  shm_ctime;
	compat_ulong_t __unused3;
	compat_pid_t   shm_cpid;
	compat_pid_t   shm_lpid;
	compat_ulong_t shm_nattch;
	compat_ulong_t __unused4;
	compat_ulong_t __unused5;
};

/*
 * A pointer passed in from user mode. This should not
 * be used for syscall parameters, just declare them
 * as pointers because the syscall entry code will have
 * appropriately converted them already.
 */

static inline void __user *compat_ptr(compat_uptr_t uptr)
{
	return (void __user *)(long)(s32)uptr;
}

static inline compat_uptr_t ptr_to_compat(void __user *uptr)
{
	return (u32)(unsigned long)uptr;
}

/* Sign-extend when storing a kernel pointer to a user's ptregs. */
static inline unsigned long ptr_to_compat_reg(void __user *uptr)
{
	return (long)(int)(long __force)uptr;
}

static inline void __user *arch_compat_alloc_user_space(long len)
{
	struct pt_regs *regs = task_pt_regs(current);
	return (void __user *)regs->sp - len;
}

static inline int is_compat_task(void)
{
	return current_thread_info()->status & TS_COMPAT;
}

extern int compat_setup_rt_frame(int sig, struct k_sigaction *ka,
				 siginfo_t *info, sigset_t *set,
				 struct pt_regs *regs);

/* Compat syscalls. */
struct compat_sigaction;
struct compat_siginfo;
struct compat_sigaltstack;
long compat_sys_execve(const char __user *path,
		       compat_uptr_t __user *argv,
		       compat_uptr_t __user *envp, struct pt_regs *);
long compat_sys_rt_sigaction(int sig, struct compat_sigaction __user *act,
			     struct compat_sigaction __user *oact,
			     size_t sigsetsize);
long compat_sys_rt_sigqueueinfo(int pid, int sig,
				struct compat_siginfo __user *uinfo);
long compat_sys_rt_sigreturn(struct pt_regs *);
long compat_sys_sigaltstack(const struct compat_sigaltstack __user *uss_ptr,
			    struct compat_sigaltstack __user *uoss_ptr,
			    struct pt_regs *);
long compat_sys_truncate64(char __user *filename, u32 dummy, u32 low, u32 high);
long compat_sys_ftruncate64(unsigned int fd, u32 dummy, u32 low, u32 high);
long compat_sys_pread64(unsigned int fd, char __user *ubuf, size_t count,
			u32 dummy, u32 low, u32 high);
long compat_sys_pwrite64(unsigned int fd, char __user *ubuf, size_t count,
			 u32 dummy, u32 low, u32 high);
long compat_sys_lookup_dcookie(u32 low, u32 high, char __user *buf, size_t len);
long compat_sys_sync_file_range2(int fd, unsigned int flags,
				 u32 offset_lo, u32 offset_hi,
				 u32 nbytes_lo, u32 nbytes_hi);
long compat_sys_fallocate(int fd, int mode,
			  u32 offset_lo, u32 offset_hi,
			  u32 len_lo, u32 len_hi);
long compat_sys_sched_rr_get_interval(compat_pid_t pid,
				      struct compat_timespec __user *interval);

/* These are the intvec_64.S trampolines. */
long _compat_sys_execve(const char __user *path,
			const compat_uptr_t __user *argv,
			const compat_uptr_t __user *envp);
long _compat_sys_sigaltstack(const struct compat_sigaltstack __user *uss_ptr,
			    struct compat_sigaltstack __user *uoss_ptr);
long _compat_sys_rt_sigreturn(void);

#endif /* _ASM_TILE_COMPAT_H */