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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#ifndef _ASM_S390X_COMPAT_H
2#define _ASM_S390X_COMPAT_H
3/*
4 * Architecture specific compatibility types
5 */
6#include <linux/types.h>
7#include <linux/sched.h>
8#include <linux/thread_info.h>
9
10#define __TYPE_IS_PTR(t) (!__builtin_types_compatible_p(typeof(0?(t)0:0ULL), u64))
11
12#define __SC_DELOUSE(t,v) ({ \
13 BUILD_BUG_ON(sizeof(t) > 4 && !__TYPE_IS_PTR(t)); \
14 (t)(__TYPE_IS_PTR(t) ? ((v) & 0x7fffffff) : (v)); \
15})
16
17#define PSW32_MASK_PER 0x40000000UL
18#define PSW32_MASK_DAT 0x04000000UL
19#define PSW32_MASK_IO 0x02000000UL
20#define PSW32_MASK_EXT 0x01000000UL
21#define PSW32_MASK_KEY 0x00F00000UL
22#define PSW32_MASK_BASE 0x00080000UL /* Always one */
23#define PSW32_MASK_MCHECK 0x00040000UL
24#define PSW32_MASK_WAIT 0x00020000UL
25#define PSW32_MASK_PSTATE 0x00010000UL
26#define PSW32_MASK_ASC 0x0000C000UL
27#define PSW32_MASK_CC 0x00003000UL
28#define PSW32_MASK_PM 0x00000f00UL
29#define PSW32_MASK_RI 0x00000080UL
30
31#define PSW32_MASK_USER 0x0000FF00UL
32
33#define PSW32_ADDR_AMODE 0x80000000UL
34#define PSW32_ADDR_INSN 0x7FFFFFFFUL
35
36#define PSW32_DEFAULT_KEY (((u32) PAGE_DEFAULT_ACC) << 20)
37
38#define PSW32_ASC_PRIMARY 0x00000000UL
39#define PSW32_ASC_ACCREG 0x00004000UL
40#define PSW32_ASC_SECONDARY 0x00008000UL
41#define PSW32_ASC_HOME 0x0000C000UL
42
43#define PSW32_USER_BITS (PSW32_MASK_DAT | PSW32_MASK_IO | PSW32_MASK_EXT | \
44 PSW32_DEFAULT_KEY | PSW32_MASK_BASE | \
45 PSW32_MASK_MCHECK | PSW32_MASK_PSTATE | \
46 PSW32_ASC_PRIMARY)
47
48#define COMPAT_USER_HZ 100
49#define COMPAT_UTS_MACHINE "s390\0\0\0\0"
50
51typedef u32 compat_size_t;
52typedef s32 compat_ssize_t;
53typedef s32 compat_time_t;
54typedef s32 compat_clock_t;
55typedef s32 compat_pid_t;
56typedef u16 __compat_uid_t;
57typedef u16 __compat_gid_t;
58typedef u32 __compat_uid32_t;
59typedef u32 __compat_gid32_t;
60typedef u16 compat_mode_t;
61typedef u32 compat_ino_t;
62typedef u16 compat_dev_t;
63typedef s32 compat_off_t;
64typedef s64 compat_loff_t;
65typedef u16 compat_nlink_t;
66typedef u16 compat_ipc_pid_t;
67typedef s32 compat_daddr_t;
68typedef u32 compat_caddr_t;
69typedef __kernel_fsid_t compat_fsid_t;
70typedef s32 compat_key_t;
71typedef s32 compat_timer_t;
72
73typedef s32 compat_int_t;
74typedef s32 compat_long_t;
75typedef s64 compat_s64;
76typedef u32 compat_uint_t;
77typedef u32 compat_ulong_t;
78typedef u64 compat_u64;
79typedef u32 compat_uptr_t;
80
81typedef struct {
82 u32 mask;
83 u32 addr;
84} __aligned(8) psw_compat_t;
85
86typedef struct {
87 psw_compat_t psw;
88 u32 gprs[NUM_GPRS];
89 u32 acrs[NUM_ACRS];
90 u32 orig_gpr2;
91} s390_compat_regs;
92
93typedef struct {
94 u32 gprs_high[NUM_GPRS];
95} s390_compat_regs_high;
96
97struct compat_timespec {
98 compat_time_t tv_sec;
99 s32 tv_nsec;
100};
101
102struct compat_timeval {
103 compat_time_t tv_sec;
104 s32 tv_usec;
105};
106
107struct compat_stat {
108 compat_dev_t st_dev;
109 u16 __pad1;
110 compat_ino_t st_ino;
111 compat_mode_t st_mode;
112 compat_nlink_t st_nlink;
113 __compat_uid_t st_uid;
114 __compat_gid_t st_gid;
115 compat_dev_t st_rdev;
116 u16 __pad2;
117 u32 st_size;
118 u32 st_blksize;
119 u32 st_blocks;
120 u32 st_atime;
121 u32 st_atime_nsec;
122 u32 st_mtime;
123 u32 st_mtime_nsec;
124 u32 st_ctime;
125 u32 st_ctime_nsec;
126 u32 __unused4;
127 u32 __unused5;
128};
129
130struct compat_flock {
131 short l_type;
132 short l_whence;
133 compat_off_t l_start;
134 compat_off_t l_len;
135 compat_pid_t l_pid;
136};
137
138#define F_GETLK64 12
139#define F_SETLK64 13
140#define F_SETLKW64 14
141
142struct compat_flock64 {
143 short l_type;
144 short l_whence;
145 compat_loff_t l_start;
146 compat_loff_t l_len;
147 compat_pid_t l_pid;
148};
149
150struct compat_statfs {
151 u32 f_type;
152 u32 f_bsize;
153 u32 f_blocks;
154 u32 f_bfree;
155 u32 f_bavail;
156 u32 f_files;
157 u32 f_ffree;
158 compat_fsid_t f_fsid;
159 u32 f_namelen;
160 u32 f_frsize;
161 u32 f_flags;
162 u32 f_spare[4];
163};
164
165struct compat_statfs64 {
166 u32 f_type;
167 u32 f_bsize;
168 u64 f_blocks;
169 u64 f_bfree;
170 u64 f_bavail;
171 u64 f_files;
172 u64 f_ffree;
173 compat_fsid_t f_fsid;
174 u32 f_namelen;
175 u32 f_frsize;
176 u32 f_flags;
177 u32 f_spare[4];
178};
179
180#define COMPAT_RLIM_OLD_INFINITY 0x7fffffff
181#define COMPAT_RLIM_INFINITY 0xffffffff
182
183typedef u32 compat_old_sigset_t; /* at least 32 bits */
184
185#define _COMPAT_NSIG 64
186#define _COMPAT_NSIG_BPW 32
187
188typedef u32 compat_sigset_word;
189
190typedef union compat_sigval {
191 compat_int_t sival_int;
192 compat_uptr_t sival_ptr;
193} compat_sigval_t;
194
195typedef struct compat_siginfo {
196 int si_signo;
197 int si_errno;
198 int si_code;
199
200 union {
201 int _pad[128/sizeof(int) - 3];
202
203 /* kill() */
204 struct {
205 pid_t _pid; /* sender's pid */
206 uid_t _uid; /* sender's uid */
207 } _kill;
208
209 /* POSIX.1b timers */
210 struct {
211 compat_timer_t _tid; /* timer id */
212 int _overrun; /* overrun count */
213 compat_sigval_t _sigval; /* same as below */
214 int _sys_private; /* not to be passed to user */
215 } _timer;
216
217 /* POSIX.1b signals */
218 struct {
219 pid_t _pid; /* sender's pid */
220 uid_t _uid; /* sender's uid */
221 compat_sigval_t _sigval;
222 } _rt;
223
224 /* SIGCHLD */
225 struct {
226 pid_t _pid; /* which child */
227 uid_t _uid; /* sender's uid */
228 int _status;/* exit code */
229 compat_clock_t _utime;
230 compat_clock_t _stime;
231 } _sigchld;
232
233 /* SIGILL, SIGFPE, SIGSEGV, SIGBUS */
234 struct {
235 __u32 _addr; /* faulting insn/memory ref. - pointer */
236 } _sigfault;
237
238 /* SIGPOLL */
239 struct {
240 int _band; /* POLL_IN, POLL_OUT, POLL_MSG */
241 int _fd;
242 } _sigpoll;
243 } _sifields;
244} compat_siginfo_t;
245
246/*
247 * How these fields are to be accessed.
248 */
249#define si_pid _sifields._kill._pid
250#define si_uid _sifields._kill._uid
251#define si_status _sifields._sigchld._status
252#define si_utime _sifields._sigchld._utime
253#define si_stime _sifields._sigchld._stime
254#define si_value _sifields._rt._sigval
255#define si_int _sifields._rt._sigval.sival_int
256#define si_ptr _sifields._rt._sigval.sival_ptr
257#define si_addr _sifields._sigfault._addr
258#define si_band _sifields._sigpoll._band
259#define si_fd _sifields._sigpoll._fd
260#define si_tid _sifields._timer._tid
261#define si_overrun _sifields._timer._overrun
262
263#define COMPAT_OFF_T_MAX 0x7fffffff
264#define COMPAT_LOFF_T_MAX 0x7fffffffffffffffL
265
266/*
267 * A pointer passed in from user mode. This should not
268 * be used for syscall parameters, just declare them
269 * as pointers because the syscall entry code will have
270 * appropriately converted them already.
271 */
272
273static inline void __user *compat_ptr(compat_uptr_t uptr)
274{
275 return (void __user *)(unsigned long)(uptr & 0x7fffffffUL);
276}
277
278static inline compat_uptr_t ptr_to_compat(void __user *uptr)
279{
280 return (u32)(unsigned long)uptr;
281}
282
283#ifdef CONFIG_COMPAT
284
285static inline int is_compat_task(void)
286{
287 return test_thread_flag(TIF_31BIT);
288}
289
290static inline void __user *arch_compat_alloc_user_space(long len)
291{
292 unsigned long stack;
293
294 stack = KSTK_ESP(current);
295 if (is_compat_task())
296 stack &= 0x7fffffffUL;
297 return (void __user *) (stack - len);
298}
299
300#endif
301
302struct compat_ipc64_perm {
303 compat_key_t key;
304 __compat_uid32_t uid;
305 __compat_gid32_t gid;
306 __compat_uid32_t cuid;
307 __compat_gid32_t cgid;
308 compat_mode_t mode;
309 unsigned short __pad1;
310 unsigned short seq;
311 unsigned short __pad2;
312 unsigned int __unused1;
313 unsigned int __unused2;
314};
315
316struct compat_semid64_ds {
317 struct compat_ipc64_perm sem_perm;
318 compat_time_t sem_otime;
319 compat_ulong_t __pad1;
320 compat_time_t sem_ctime;
321 compat_ulong_t __pad2;
322 compat_ulong_t sem_nsems;
323 compat_ulong_t __unused1;
324 compat_ulong_t __unused2;
325};
326
327struct compat_msqid64_ds {
328 struct compat_ipc64_perm msg_perm;
329 compat_time_t msg_stime;
330 compat_ulong_t __pad1;
331 compat_time_t msg_rtime;
332 compat_ulong_t __pad2;
333 compat_time_t msg_ctime;
334 compat_ulong_t __pad3;
335 compat_ulong_t msg_cbytes;
336 compat_ulong_t msg_qnum;
337 compat_ulong_t msg_qbytes;
338 compat_pid_t msg_lspid;
339 compat_pid_t msg_lrpid;
340 compat_ulong_t __unused1;
341 compat_ulong_t __unused2;
342};
343
344struct compat_shmid64_ds {
345 struct compat_ipc64_perm shm_perm;
346 compat_size_t shm_segsz;
347 compat_time_t shm_atime;
348 compat_ulong_t __pad1;
349 compat_time_t shm_dtime;
350 compat_ulong_t __pad2;
351 compat_time_t shm_ctime;
352 compat_ulong_t __pad3;
353 compat_pid_t shm_cpid;
354 compat_pid_t shm_lpid;
355 compat_ulong_t shm_nattch;
356 compat_ulong_t __unused1;
357 compat_ulong_t __unused2;
358};
359#endif /* _ASM_S390X_COMPAT_H */