1 /* SPDX-License-Identifier: GPL-2.0 */
2 #ifndef _ASM_S390X_COMPAT_H
3 #define _ASM_S390X_COMPAT_H
5 * Architecture specific compatibility types
7 #include <linux/types.h>
8 #include <linux/sched.h>
9 #include <linux/sched/task_stack.h>
10 #include <linux/thread_info.h>
12 #define __TYPE_IS_PTR(t) (!__builtin_types_compatible_p( \
13 typeof(0?(__force t)0:0ULL), u64))
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)); \
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
34 #define PSW32_MASK_USER 0x0000FF00UL
36 #define PSW32_ADDR_AMODE 0x80000000UL
37 #define PSW32_ADDR_INSN 0x7FFFFFFFUL
39 #define PSW32_DEFAULT_KEY (((u32) PAGE_DEFAULT_ACC) << 20)
41 #define PSW32_ASC_PRIMARY 0x00000000UL
42 #define PSW32_ASC_ACCREG 0x00004000UL
43 #define PSW32_ASC_SECONDARY 0x00008000UL
44 #define PSW32_ASC_HOME 0x0000C000UL
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 | \
51 #define COMPAT_USER_HZ 100
52 #define COMPAT_UTS_MACHINE "s390\0\0\0\0"
54 typedef u32 compat_size_t;
55 typedef s32 compat_ssize_t;
56 typedef s32 compat_clock_t;
57 typedef s32 compat_pid_t;
58 typedef u16 __compat_uid_t;
59 typedef u16 __compat_gid_t;
60 typedef u32 __compat_uid32_t;
61 typedef u32 __compat_gid32_t;
62 typedef u16 compat_mode_t;
63 typedef u32 compat_ino_t;
64 typedef u16 compat_dev_t;
65 typedef s32 compat_off_t;
66 typedef s64 compat_loff_t;
67 typedef u16 compat_nlink_t;
68 typedef u16 compat_ipc_pid_t;
69 typedef s32 compat_daddr_t;
70 typedef u32 compat_caddr_t;
71 typedef __kernel_fsid_t compat_fsid_t;
72 typedef s32 compat_key_t;
73 typedef s32 compat_timer_t;
75 typedef s32 compat_int_t;
76 typedef s32 compat_long_t;
77 typedef s64 compat_s64;
78 typedef u32 compat_uint_t;
79 typedef u32 compat_ulong_t;
80 typedef u64 compat_u64;
81 typedef u32 compat_uptr_t;
86 } __aligned(8) psw_compat_t;
96 u32 gprs_high[NUM_GPRS];
97 } s390_compat_regs_high;
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;
122 struct compat_flock {
125 compat_off_t l_start;
132 #define F_SETLKW64 14
134 struct compat_flock64 {
137 compat_loff_t l_start;
142 struct compat_statfs {
150 compat_fsid_t f_fsid;
157 struct compat_statfs64 {
165 compat_fsid_t f_fsid;
172 #define COMPAT_RLIM_INFINITY 0xffffffff
174 typedef u32 compat_old_sigset_t; /* at least 32 bits */
176 #define _COMPAT_NSIG 64
177 #define _COMPAT_NSIG_BPW 32
179 typedef u32 compat_sigset_word;
181 #define COMPAT_OFF_T_MAX 0x7fffffff
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.
190 static inline void __user *compat_ptr(compat_uptr_t uptr)
192 return (void __user *)(unsigned long)(uptr & 0x7fffffffUL);
195 static inline compat_uptr_t ptr_to_compat(void __user *uptr)
197 return (u32)(unsigned long)uptr;
202 static inline int is_compat_task(void)
204 return test_thread_flag(TIF_31BIT);
207 static inline void __user *arch_compat_alloc_user_space(long len)
211 stack = KSTK_ESP(current);
212 if (is_compat_task())
213 stack &= 0x7fffffffUL;
214 return (void __user *) (stack - len);
219 struct compat_ipc64_perm {
221 __compat_uid32_t uid;
222 __compat_gid32_t gid;
223 __compat_uid32_t cuid;
224 __compat_gid32_t cgid;
226 unsigned short __pad1;
228 unsigned short __pad2;
229 unsigned int __unused1;
230 unsigned int __unused2;
233 struct 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;
244 struct 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;
261 struct 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;
276 #endif /* _ASM_S390X_COMPAT_H */