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1/* SPDX-License-Identifier: GPL-2.0 */
2#ifndef _ASM_S390X_COMPAT_H
3#define _ASM_S390X_COMPAT_H
4/*
5 * Architecture specific compatibility types
6 */
7#include <linux/types.h>
8#include <linux/sched.h>
9#include <linux/sched/task_stack.h>
10#include <linux/thread_info.h>
11#include <asm/ptrace.h>
12
13#define compat_mode_t compat_mode_t
14typedef u16 compat_mode_t;
15
16#define __compat_uid_t __compat_uid_t
17typedef u16 __compat_uid_t;
18typedef u16 __compat_gid_t;
19
20#define compat_dev_t compat_dev_t
21typedef u16 compat_dev_t;
22
23#define compat_ipc_pid_t compat_ipc_pid_t
24typedef u16 compat_ipc_pid_t;
25
26#define compat_statfs compat_statfs
27
28#include <asm-generic/compat.h>
29
30#define __TYPE_IS_PTR(t) (!__builtin_types_compatible_p( \
31 typeof(0?(__force t)0:0ULL), u64))
32
33#define __SC_DELOUSE(t,v) ({ \
34 BUILD_BUG_ON(sizeof(t) > 4 && !__TYPE_IS_PTR(t)); \
35 (__force t)(__TYPE_IS_PTR(t) ? ((v) & 0x7fffffff) : (v)); \
36})
37
38#define PSW32_MASK_USER 0x0000FF00UL
39
40#define PSW32_USER_BITS (PSW32_MASK_DAT | PSW32_MASK_IO | PSW32_MASK_EXT | \
41 PSW32_DEFAULT_KEY | PSW32_MASK_BASE | \
42 PSW32_MASK_MCHECK | PSW32_MASK_PSTATE | \
43 PSW32_ASC_PRIMARY)
44
45#define COMPAT_UTS_MACHINE "s390\0\0\0\0"
46
47typedef u16 compat_nlink_t;
48
49typedef struct {
50 u32 mask;
51 u32 addr;
52} __aligned(8) psw_compat_t;
53
54typedef struct {
55 psw_compat_t psw;
56 u32 gprs[NUM_GPRS];
57 u32 acrs[NUM_ACRS];
58 u32 orig_gpr2;
59} s390_compat_regs;
60
61typedef struct {
62 u32 gprs_high[NUM_GPRS];
63} s390_compat_regs_high;
64
65struct compat_stat {
66 compat_dev_t st_dev;
67 u16 __pad1;
68 compat_ino_t st_ino;
69 compat_mode_t st_mode;
70 compat_nlink_t st_nlink;
71 __compat_uid_t st_uid;
72 __compat_gid_t st_gid;
73 compat_dev_t st_rdev;
74 u16 __pad2;
75 u32 st_size;
76 u32 st_blksize;
77 u32 st_blocks;
78 u32 st_atime;
79 u32 st_atime_nsec;
80 u32 st_mtime;
81 u32 st_mtime_nsec;
82 u32 st_ctime;
83 u32 st_ctime_nsec;
84 u32 __unused4;
85 u32 __unused5;
86};
87
88struct compat_statfs {
89 u32 f_type;
90 u32 f_bsize;
91 u32 f_blocks;
92 u32 f_bfree;
93 u32 f_bavail;
94 u32 f_files;
95 u32 f_ffree;
96 compat_fsid_t f_fsid;
97 u32 f_namelen;
98 u32 f_frsize;
99 u32 f_flags;
100 u32 f_spare[4];
101};
102
103struct compat_statfs64 {
104 u32 f_type;
105 u32 f_bsize;
106 u64 f_blocks;
107 u64 f_bfree;
108 u64 f_bavail;
109 u64 f_files;
110 u64 f_ffree;
111 compat_fsid_t f_fsid;
112 u32 f_namelen;
113 u32 f_frsize;
114 u32 f_flags;
115 u32 f_spare[4];
116};
117
118/*
119 * A pointer passed in from user mode. This should not
120 * be used for syscall parameters, just declare them
121 * as pointers because the syscall entry code will have
122 * appropriately converted them already.
123 */
124
125static inline void __user *compat_ptr(compat_uptr_t uptr)
126{
127 return (void __user *)(unsigned long)(uptr & 0x7fffffffUL);
128}
129#define compat_ptr(uptr) compat_ptr(uptr)
130
131#ifdef CONFIG_COMPAT
132
133static inline int is_compat_task(void)
134{
135 return test_thread_flag(TIF_31BIT);
136}
137
138#endif
139
140#endif /* _ASM_S390X_COMPAT_H */
1/* SPDX-License-Identifier: GPL-2.0 */
2#ifndef _ASM_S390X_COMPAT_H
3#define _ASM_S390X_COMPAT_H
4/*
5 * Architecture specific compatibility types
6 */
7#include <linux/types.h>
8#include <linux/sched.h>
9#include <linux/sched/task_stack.h>
10#include <linux/thread_info.h>
11
12#define __TYPE_IS_PTR(t) (!__builtin_types_compatible_p( \
13 typeof(0?(__force t)0:0ULL), u64))
14
15#define __SC_DELOUSE(t,v) ({ \
16 BUILD_BUG_ON(sizeof(t) > 4 && !__TYPE_IS_PTR(t)); \
17 (__force t)(__TYPE_IS_PTR(t) ? ((v) & 0x7fffffff) : (v)); \
18})
19
20#define PSW32_MASK_PER 0x40000000UL
21#define PSW32_MASK_DAT 0x04000000UL
22#define PSW32_MASK_IO 0x02000000UL
23#define PSW32_MASK_EXT 0x01000000UL
24#define PSW32_MASK_KEY 0x00F00000UL
25#define PSW32_MASK_BASE 0x00080000UL /* Always one */
26#define PSW32_MASK_MCHECK 0x00040000UL
27#define PSW32_MASK_WAIT 0x00020000UL
28#define PSW32_MASK_PSTATE 0x00010000UL
29#define PSW32_MASK_ASC 0x0000C000UL
30#define PSW32_MASK_CC 0x00003000UL
31#define PSW32_MASK_PM 0x00000f00UL
32#define PSW32_MASK_RI 0x00000080UL
33
34#define PSW32_MASK_USER 0x0000FF00UL
35
36#define PSW32_ADDR_AMODE 0x80000000UL
37#define PSW32_ADDR_INSN 0x7FFFFFFFUL
38
39#define PSW32_DEFAULT_KEY (((u32) PAGE_DEFAULT_ACC) << 20)
40
41#define PSW32_ASC_PRIMARY 0x00000000UL
42#define PSW32_ASC_ACCREG 0x00004000UL
43#define PSW32_ASC_SECONDARY 0x00008000UL
44#define PSW32_ASC_HOME 0x0000C000UL
45
46#define PSW32_USER_BITS (PSW32_MASK_DAT | PSW32_MASK_IO | PSW32_MASK_EXT | \
47 PSW32_DEFAULT_KEY | PSW32_MASK_BASE | \
48 PSW32_MASK_MCHECK | PSW32_MASK_PSTATE | \
49 PSW32_ASC_PRIMARY)
50
51#define COMPAT_USER_HZ 100
52#define COMPAT_UTS_MACHINE "s390\0\0\0\0"
53
54typedef u32 compat_size_t;
55typedef s32 compat_ssize_t;
56typedef s32 compat_time_t;
57typedef s32 compat_clock_t;
58typedef s32 compat_pid_t;
59typedef u16 __compat_uid_t;
60typedef u16 __compat_gid_t;
61typedef u32 __compat_uid32_t;
62typedef u32 __compat_gid32_t;
63typedef u16 compat_mode_t;
64typedef u32 compat_ino_t;
65typedef u16 compat_dev_t;
66typedef s32 compat_off_t;
67typedef s64 compat_loff_t;
68typedef u16 compat_nlink_t;
69typedef u16 compat_ipc_pid_t;
70typedef s32 compat_daddr_t;
71typedef u32 compat_caddr_t;
72typedef __kernel_fsid_t compat_fsid_t;
73typedef s32 compat_key_t;
74typedef s32 compat_timer_t;
75
76typedef s32 compat_int_t;
77typedef s32 compat_long_t;
78typedef s64 compat_s64;
79typedef u32 compat_uint_t;
80typedef u32 compat_ulong_t;
81typedef u64 compat_u64;
82typedef u32 compat_uptr_t;
83
84typedef struct {
85 u32 mask;
86 u32 addr;
87} __aligned(8) psw_compat_t;
88
89typedef struct {
90 psw_compat_t psw;
91 u32 gprs[NUM_GPRS];
92 u32 acrs[NUM_ACRS];
93 u32 orig_gpr2;
94} s390_compat_regs;
95
96typedef struct {
97 u32 gprs_high[NUM_GPRS];
98} s390_compat_regs_high;
99
100struct compat_timespec {
101 compat_time_t tv_sec;
102 s32 tv_nsec;
103};
104
105struct compat_timeval {
106 compat_time_t tv_sec;
107 s32 tv_usec;
108};
109
110struct compat_stat {
111 compat_dev_t st_dev;
112 u16 __pad1;
113 compat_ino_t st_ino;
114 compat_mode_t st_mode;
115 compat_nlink_t st_nlink;
116 __compat_uid_t st_uid;
117 __compat_gid_t st_gid;
118 compat_dev_t st_rdev;
119 u16 __pad2;
120 u32 st_size;
121 u32 st_blksize;
122 u32 st_blocks;
123 u32 st_atime;
124 u32 st_atime_nsec;
125 u32 st_mtime;
126 u32 st_mtime_nsec;
127 u32 st_ctime;
128 u32 st_ctime_nsec;
129 u32 __unused4;
130 u32 __unused5;
131};
132
133struct compat_flock {
134 short l_type;
135 short l_whence;
136 compat_off_t l_start;
137 compat_off_t l_len;
138 compat_pid_t l_pid;
139};
140
141#define F_GETLK64 12
142#define F_SETLK64 13
143#define F_SETLKW64 14
144
145struct compat_flock64 {
146 short l_type;
147 short l_whence;
148 compat_loff_t l_start;
149 compat_loff_t l_len;
150 compat_pid_t l_pid;
151};
152
153struct compat_statfs {
154 u32 f_type;
155 u32 f_bsize;
156 u32 f_blocks;
157 u32 f_bfree;
158 u32 f_bavail;
159 u32 f_files;
160 u32 f_ffree;
161 compat_fsid_t f_fsid;
162 u32 f_namelen;
163 u32 f_frsize;
164 u32 f_flags;
165 u32 f_spare[4];
166};
167
168struct compat_statfs64 {
169 u32 f_type;
170 u32 f_bsize;
171 u64 f_blocks;
172 u64 f_bfree;
173 u64 f_bavail;
174 u64 f_files;
175 u64 f_ffree;
176 compat_fsid_t f_fsid;
177 u32 f_namelen;
178 u32 f_frsize;
179 u32 f_flags;
180 u32 f_spare[4];
181};
182
183#define COMPAT_RLIM_INFINITY 0xffffffff
184
185typedef u32 compat_old_sigset_t; /* at least 32 bits */
186
187#define _COMPAT_NSIG 64
188#define _COMPAT_NSIG_BPW 32
189
190typedef u32 compat_sigset_word;
191
192#define COMPAT_OFF_T_MAX 0x7fffffff
193
194/*
195 * A pointer passed in from user mode. This should not
196 * be used for syscall parameters, just declare them
197 * as pointers because the syscall entry code will have
198 * appropriately converted them already.
199 */
200
201static inline void __user *compat_ptr(compat_uptr_t uptr)
202{
203 return (void __user *)(unsigned long)(uptr & 0x7fffffffUL);
204}
205
206static inline compat_uptr_t ptr_to_compat(void __user *uptr)
207{
208 return (u32)(unsigned long)uptr;
209}
210
211#ifdef CONFIG_COMPAT
212
213static inline int is_compat_task(void)
214{
215 return test_thread_flag(TIF_31BIT);
216}
217
218static inline void __user *arch_compat_alloc_user_space(long len)
219{
220 unsigned long stack;
221
222 stack = KSTK_ESP(current);
223 if (is_compat_task())
224 stack &= 0x7fffffffUL;
225 return (void __user *) (stack - len);
226}
227
228#endif
229
230struct compat_ipc64_perm {
231 compat_key_t key;
232 __compat_uid32_t uid;
233 __compat_gid32_t gid;
234 __compat_uid32_t cuid;
235 __compat_gid32_t cgid;
236 compat_mode_t mode;
237 unsigned short __pad1;
238 unsigned short seq;
239 unsigned short __pad2;
240 unsigned int __unused1;
241 unsigned int __unused2;
242};
243
244struct compat_semid64_ds {
245 struct compat_ipc64_perm sem_perm;
246 compat_time_t sem_otime;
247 compat_ulong_t __pad1;
248 compat_time_t sem_ctime;
249 compat_ulong_t __pad2;
250 compat_ulong_t sem_nsems;
251 compat_ulong_t __unused1;
252 compat_ulong_t __unused2;
253};
254
255struct compat_msqid64_ds {
256 struct compat_ipc64_perm msg_perm;
257 compat_time_t msg_stime;
258 compat_ulong_t __pad1;
259 compat_time_t msg_rtime;
260 compat_ulong_t __pad2;
261 compat_time_t msg_ctime;
262 compat_ulong_t __pad3;
263 compat_ulong_t msg_cbytes;
264 compat_ulong_t msg_qnum;
265 compat_ulong_t msg_qbytes;
266 compat_pid_t msg_lspid;
267 compat_pid_t msg_lrpid;
268 compat_ulong_t __unused1;
269 compat_ulong_t __unused2;
270};
271
272struct compat_shmid64_ds {
273 struct compat_ipc64_perm shm_perm;
274 compat_size_t shm_segsz;
275 compat_time_t shm_atime;
276 compat_ulong_t __pad1;
277 compat_time_t shm_dtime;
278 compat_ulong_t __pad2;
279 compat_time_t shm_ctime;
280 compat_ulong_t __pad3;
281 compat_pid_t shm_cpid;
282 compat_pid_t shm_lpid;
283 compat_ulong_t shm_nattch;
284 compat_ulong_t __unused1;
285 compat_ulong_t __unused2;
286};
287#endif /* _ASM_S390X_COMPAT_H */