summaryrefslogtreecommitdiffstats
path: root/arch/s390/include/asm/compat.h
blob: 97db2fba546ad2c517a25fe9dbf25f8f351bf8ea (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
/* SPDX-License-Identifier: GPL-2.0 */
#ifndef _ASM_S390X_COMPAT_H
#define _ASM_S390X_COMPAT_H
/*
 * Architecture specific compatibility types
 */
#include <linux/types.h>
#include <linux/sched.h>
#include <linux/sched/task_stack.h>
#include <linux/thread_info.h>

#define __TYPE_IS_PTR(t) (!__builtin_types_compatible_p( \
				typeof(0?(__force t)0:0ULL), u64))

#define __SC_DELOUSE(t,v) ({ \
	BUILD_BUG_ON(sizeof(t) > 4 && !__TYPE_IS_PTR(t)); \
	(__force t)(__TYPE_IS_PTR(t) ? ((v) & 0x7fffffff) : (v)); \
})

#define PSW32_MASK_PER		0x40000000UL
#define PSW32_MASK_DAT		0x04000000UL
#define PSW32_MASK_IO		0x02000000UL
#define PSW32_MASK_EXT		0x01000000UL
#define PSW32_MASK_KEY		0x00F00000UL
#define PSW32_MASK_BASE		0x00080000UL	/* Always one */
#define PSW32_MASK_MCHECK	0x00040000UL
#define PSW32_MASK_WAIT		0x00020000UL
#define PSW32_MASK_PSTATE	0x00010000UL
#define PSW32_MASK_ASC		0x0000C000UL
#define PSW32_MASK_CC		0x00003000UL
#define PSW32_MASK_PM		0x00000f00UL
#define PSW32_MASK_RI		0x00000080UL

#define PSW32_MASK_USER		0x0000FF00UL

#define PSW32_ADDR_AMODE	0x80000000UL
#define PSW32_ADDR_INSN		0x7FFFFFFFUL

#define PSW32_DEFAULT_KEY	(((u32) PAGE_DEFAULT_ACC) << 20)

#define PSW32_ASC_PRIMARY	0x00000000UL
#define PSW32_ASC_ACCREG	0x00004000UL
#define PSW32_ASC_SECONDARY	0x00008000UL
#define PSW32_ASC_HOME		0x0000C000UL

#define PSW32_USER_BITS (PSW32_MASK_DAT | PSW32_MASK_IO | PSW32_MASK_EXT | \
			 PSW32_DEFAULT_KEY | PSW32_MASK_BASE | \
			 PSW32_MASK_MCHECK | PSW32_MASK_PSTATE | \
			 PSW32_ASC_PRIMARY)

#define COMPAT_USER_HZ		100
#define COMPAT_UTS_MACHINE	"s390\0\0\0\0"

typedef u32		compat_size_t;
typedef s32		compat_ssize_t;
typedef s32		compat_clock_t;
typedef s32		compat_pid_t;
typedef u16		__compat_uid_t;
typedef u16		__compat_gid_t;
typedef u32		__compat_uid32_t;
typedef u32		__compat_gid32_t;
typedef u16		compat_mode_t;
typedef u32		compat_ino_t;
typedef u16		compat_dev_t;
typedef s32		compat_off_t;
typedef s64		compat_loff_t;
typedef u16		compat_nlink_t;
typedef u16		compat_ipc_pid_t;
typedef s32		compat_daddr_t;
typedef u32		compat_caddr_t;
typedef __kernel_fsid_t	compat_fsid_t;
typedef s32		compat_key_t;
typedef s32		compat_timer_t;

typedef s32		compat_int_t;
typedef s32		compat_long_t;
typedef s64		compat_s64;
typedef u32		compat_uint_t;
typedef u32		compat_ulong_t;
typedef u64		compat_u64;
typedef u32		compat_uptr_t;

typedef struct {
	u32 mask;
	u32 addr;
} __aligned(8) psw_compat_t;

typedef struct {
	psw_compat_t psw;
	u32 gprs[NUM_GPRS];
	u32 acrs[NUM_ACRS];
	u32 orig_gpr2;
} s390_compat_regs;

typedef struct {
	u32 gprs_high[NUM_GPRS];
} s390_compat_regs_high;

struct compat_stat {
	compat_dev_t	st_dev;
	u16		__pad1;
	compat_ino_t	st_ino;
	compat_mode_t	st_mode;
	compat_nlink_t	st_nlink;
	__compat_uid_t	st_uid;
	__compat_gid_t	st_gid;
	compat_dev_t	st_rdev;
	u16		__pad2;
	u32		st_size;
	u32		st_blksize;
	u32		st_blocks;
	u32		st_atime;
	u32		st_atime_nsec;
	u32		st_mtime;
	u32		st_mtime_nsec;
	u32		st_ctime;
	u32		st_ctime_nsec;
	u32		__unused4;
	u32		__unused5;
};

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
#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;
};

struct compat_statfs {
	u32		f_type;
	u32		f_bsize;
	u32		f_blocks;
	u32		f_bfree;
	u32		f_bavail;
	u32		f_files;
	u32		f_ffree;
	compat_fsid_t	f_fsid;
	u32		f_namelen;
	u32		f_frsize;
	u32		f_flags;
	u32		f_spare[4];
};

struct compat_statfs64 {
	u32		f_type;
	u32		f_bsize;
	u64		f_blocks;
	u64		f_bfree;
	u64		f_bavail;
	u64		f_files;
	u64		f_ffree;
	compat_fsid_t	f_fsid;
	u32		f_namelen;
	u32		f_frsize;
	u32		f_flags;
	u32		f_spare[4];
};

#define COMPAT_RLIM_INFINITY		0xffffffff

typedef u32		compat_old_sigset_t;	/* at least 32 bits */

#define _COMPAT_NSIG		64
#define _COMPAT_NSIG_BPW	32

typedef u32		compat_sigset_word;

#define COMPAT_OFF_T_MAX	0x7fffffff

/*
 * 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 *)(unsigned long)(uptr & 0x7fffffffUL);
}

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

#ifdef CONFIG_COMPAT

static inline int is_compat_task(void)
{
	return test_thread_flag(TIF_31BIT);
}

static inline void __user *arch_compat_alloc_user_space(long len)
{
	unsigned long stack;

	stack = KSTK_ESP(current);
	if (is_compat_task())
		stack &= 0x7fffffffUL;
	return (void __user *) (stack - len);
}

#endif

struct compat_ipc64_perm {
	compat_key_t key;
	__compat_uid32_t uid;
	__compat_gid32_t gid;
	__compat_uid32_t cuid;
	__compat_gid32_t cgid;
	compat_mode_t mode;
	unsigned short __pad1;
	unsigned short seq;
	unsigned short __pad2;
	unsigned int __unused1;
	unsigned int __unused2;
};

struct compat_semid64_ds {
	struct compat_ipc64_perm sem_perm;
	compat_ulong_t sem_otime;
	compat_ulong_t sem_otime_high;
	compat_ulong_t sem_ctime;
	compat_ulong_t sem_ctime_high;
	compat_ulong_t sem_nsems;
	compat_ulong_t __unused1;
	compat_ulong_t __unused2;
};

struct compat_msqid64_ds {
	struct compat_ipc64_perm msg_perm;
	compat_ulong_t msg_stime;
	compat_ulong_t msg_stime_high;
	compat_ulong_t msg_rtime;
	compat_ulong_t msg_rtime_high;
	compat_ulong_t msg_ctime;
	compat_ulong_t msg_ctime_high;
	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 __unused1;
	compat_ulong_t __unused2;
};

struct compat_shmid64_ds {
	struct compat_ipc64_perm shm_perm;
	compat_size_t  shm_segsz;
	compat_ulong_t shm_atime;
	compat_ulong_t shm_atime_high;
	compat_ulong_t shm_dtime;
	compat_ulong_t shm_dtime_high;
	compat_ulong_t shm_ctime;
	compat_ulong_t shm_ctime_high;
	compat_pid_t   shm_cpid;
	compat_pid_t   shm_lpid;
	compat_ulong_t shm_nattch;
	compat_ulong_t __unused1;
	compat_ulong_t __unused2;
};
#endif /* _ASM_S390X_COMPAT_H */