Linux kernel mirror (for testing)
git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
tjh.dev
kernel
os
linux
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_clock_t;
57typedef s32 compat_pid_t;
58typedef u16 __compat_uid_t;
59typedef u16 __compat_gid_t;
60typedef u32 __compat_uid32_t;
61typedef u32 __compat_gid32_t;
62typedef u16 compat_mode_t;
63typedef u32 compat_ino_t;
64typedef u16 compat_dev_t;
65typedef s32 compat_off_t;
66typedef s64 compat_loff_t;
67typedef u16 compat_nlink_t;
68typedef u16 compat_ipc_pid_t;
69typedef s32 compat_daddr_t;
70typedef u32 compat_caddr_t;
71typedef __kernel_fsid_t compat_fsid_t;
72typedef s32 compat_key_t;
73typedef s32 compat_timer_t;
74
75typedef s32 compat_int_t;
76typedef s32 compat_long_t;
77typedef s64 compat_s64;
78typedef u32 compat_uint_t;
79typedef u32 compat_ulong_t;
80typedef u64 compat_u64;
81typedef u32 compat_uptr_t;
82
83typedef struct {
84 u32 mask;
85 u32 addr;
86} __aligned(8) psw_compat_t;
87
88typedef struct {
89 psw_compat_t psw;
90 u32 gprs[NUM_GPRS];
91 u32 acrs[NUM_ACRS];
92 u32 orig_gpr2;
93} s390_compat_regs;
94
95typedef struct {
96 u32 gprs_high[NUM_GPRS];
97} s390_compat_regs_high;
98
99struct compat_stat {
100 compat_dev_t st_dev;
101 u16 __pad1;
102 compat_ino_t st_ino;
103 compat_mode_t st_mode;
104 compat_nlink_t st_nlink;
105 __compat_uid_t st_uid;
106 __compat_gid_t st_gid;
107 compat_dev_t st_rdev;
108 u16 __pad2;
109 u32 st_size;
110 u32 st_blksize;
111 u32 st_blocks;
112 u32 st_atime;
113 u32 st_atime_nsec;
114 u32 st_mtime;
115 u32 st_mtime_nsec;
116 u32 st_ctime;
117 u32 st_ctime_nsec;
118 u32 __unused4;
119 u32 __unused5;
120};
121
122struct compat_flock {
123 short l_type;
124 short l_whence;
125 compat_off_t l_start;
126 compat_off_t l_len;
127 compat_pid_t l_pid;
128};
129
130#define F_GETLK64 12
131#define F_SETLK64 13
132#define F_SETLKW64 14
133
134struct compat_flock64 {
135 short l_type;
136 short l_whence;
137 compat_loff_t l_start;
138 compat_loff_t l_len;
139 compat_pid_t l_pid;
140};
141
142struct compat_statfs {
143 u32 f_type;
144 u32 f_bsize;
145 u32 f_blocks;
146 u32 f_bfree;
147 u32 f_bavail;
148 u32 f_files;
149 u32 f_ffree;
150 compat_fsid_t f_fsid;
151 u32 f_namelen;
152 u32 f_frsize;
153 u32 f_flags;
154 u32 f_spare[4];
155};
156
157struct compat_statfs64 {
158 u32 f_type;
159 u32 f_bsize;
160 u64 f_blocks;
161 u64 f_bfree;
162 u64 f_bavail;
163 u64 f_files;
164 u64 f_ffree;
165 compat_fsid_t f_fsid;
166 u32 f_namelen;
167 u32 f_frsize;
168 u32 f_flags;
169 u32 f_spare[4];
170};
171
172#define COMPAT_RLIM_INFINITY 0xffffffff
173
174typedef u32 compat_old_sigset_t; /* at least 32 bits */
175
176#define _COMPAT_NSIG 64
177#define _COMPAT_NSIG_BPW 32
178
179typedef u32 compat_sigset_word;
180
181#define COMPAT_OFF_T_MAX 0x7fffffff
182
183/*
184 * A pointer passed in from user mode. This should not
185 * be used for syscall parameters, just declare them
186 * as pointers because the syscall entry code will have
187 * appropriately converted them already.
188 */
189
190static inline void __user *compat_ptr(compat_uptr_t uptr)
191{
192 return (void __user *)(unsigned long)(uptr & 0x7fffffffUL);
193}
194
195static inline compat_uptr_t ptr_to_compat(void __user *uptr)
196{
197 return (u32)(unsigned long)uptr;
198}
199
200#ifdef CONFIG_COMPAT
201
202static inline int is_compat_task(void)
203{
204 return test_thread_flag(TIF_31BIT);
205}
206
207static inline void __user *arch_compat_alloc_user_space(long len)
208{
209 unsigned long stack;
210
211 stack = KSTK_ESP(current);
212 if (is_compat_task())
213 stack &= 0x7fffffffUL;
214 return (void __user *) (stack - len);
215}
216
217#endif
218
219struct compat_ipc64_perm {
220 compat_key_t key;
221 __compat_uid32_t uid;
222 __compat_gid32_t gid;
223 __compat_uid32_t cuid;
224 __compat_gid32_t cgid;
225 compat_mode_t mode;
226 unsigned short __pad1;
227 unsigned short seq;
228 unsigned short __pad2;
229 unsigned int __unused1;
230 unsigned int __unused2;
231};
232
233struct compat_semid64_ds {
234 struct compat_ipc64_perm sem_perm;
235 compat_ulong_t sem_otime;
236 compat_ulong_t sem_otime_high;
237 compat_ulong_t sem_ctime;
238 compat_ulong_t sem_ctime_high;
239 compat_ulong_t sem_nsems;
240 compat_ulong_t __unused1;
241 compat_ulong_t __unused2;
242};
243
244struct compat_msqid64_ds {
245 struct compat_ipc64_perm msg_perm;
246 compat_ulong_t msg_stime;
247 compat_ulong_t msg_stime_high;
248 compat_ulong_t msg_rtime;
249 compat_ulong_t msg_rtime_high;
250 compat_ulong_t msg_ctime;
251 compat_ulong_t msg_ctime_high;
252 compat_ulong_t msg_cbytes;
253 compat_ulong_t msg_qnum;
254 compat_ulong_t msg_qbytes;
255 compat_pid_t msg_lspid;
256 compat_pid_t msg_lrpid;
257 compat_ulong_t __unused1;
258 compat_ulong_t __unused2;
259};
260
261struct compat_shmid64_ds {
262 struct compat_ipc64_perm shm_perm;
263 compat_size_t shm_segsz;
264 compat_ulong_t shm_atime;
265 compat_ulong_t shm_atime_high;
266 compat_ulong_t shm_dtime;
267 compat_ulong_t shm_dtime_high;
268 compat_ulong_t shm_ctime;
269 compat_ulong_t shm_ctime_high;
270 compat_pid_t shm_cpid;
271 compat_pid_t shm_lpid;
272 compat_ulong_t shm_nattch;
273 compat_ulong_t __unused1;
274 compat_ulong_t __unused2;
275};
276#endif /* _ASM_S390X_COMPAT_H */