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 #include <asm-generic/compat.h>
14 #define __TYPE_IS_PTR(t) (!__builtin_types_compatible_p( \
15 typeof(0?(__force t)0:0ULL), u64))
17 #define __SC_DELOUSE(t,v) ({ \
18 BUILD_BUG_ON(sizeof(t) > 4 && !__TYPE_IS_PTR(t)); \
19 (__force t)(__TYPE_IS_PTR(t) ? ((v) & 0x7fffffff) : (v)); \
22 #define PSW32_MASK_PER 0x40000000UL
23 #define PSW32_MASK_DAT 0x04000000UL
24 #define PSW32_MASK_IO 0x02000000UL
25 #define PSW32_MASK_EXT 0x01000000UL
26 #define PSW32_MASK_KEY 0x00F00000UL
27 #define PSW32_MASK_BASE 0x00080000UL /* Always one */
28 #define PSW32_MASK_MCHECK 0x00040000UL
29 #define PSW32_MASK_WAIT 0x00020000UL
30 #define PSW32_MASK_PSTATE 0x00010000UL
31 #define PSW32_MASK_ASC 0x0000C000UL
32 #define PSW32_MASK_CC 0x00003000UL
33 #define PSW32_MASK_PM 0x00000f00UL
34 #define PSW32_MASK_RI 0x00000080UL
36 #define PSW32_MASK_USER 0x0000FF00UL
38 #define PSW32_ADDR_AMODE 0x80000000UL
39 #define PSW32_ADDR_INSN 0x7FFFFFFFUL
41 #define PSW32_DEFAULT_KEY (((u32) PAGE_DEFAULT_ACC) << 20)
43 #define PSW32_ASC_PRIMARY 0x00000000UL
44 #define PSW32_ASC_ACCREG 0x00004000UL
45 #define PSW32_ASC_SECONDARY 0x00008000UL
46 #define PSW32_ASC_HOME 0x0000C000UL
48 #define PSW32_USER_BITS (PSW32_MASK_DAT | PSW32_MASK_IO | PSW32_MASK_EXT | \
49 PSW32_DEFAULT_KEY | PSW32_MASK_BASE | \
50 PSW32_MASK_MCHECK | PSW32_MASK_PSTATE | \
53 #define COMPAT_USER_HZ 100
54 #define COMPAT_UTS_MACHINE "s390\0\0\0\0"
56 typedef u16 __compat_uid_t;
57 typedef u16 __compat_gid_t;
58 typedef u32 __compat_uid32_t;
59 typedef u32 __compat_gid32_t;
60 typedef u16 compat_mode_t;
61 typedef u16 compat_dev_t;
62 typedef u16 compat_nlink_t;
63 typedef u16 compat_ipc_pid_t;
64 typedef u32 compat_caddr_t;
65 typedef __kernel_fsid_t compat_fsid_t;
66 typedef s64 compat_s64;
67 typedef u64 compat_u64;
72 } __aligned(8) psw_compat_t;
82 u32 gprs_high[NUM_GPRS];
83 } s390_compat_regs_high;
89 compat_mode_t st_mode;
90 compat_nlink_t st_nlink;
91 __compat_uid_t st_uid;
92 __compat_gid_t st_gid;
108 struct compat_flock {
111 compat_off_t l_start;
118 #define F_SETLKW64 14
120 struct compat_flock64 {
123 compat_loff_t l_start;
128 struct compat_statfs {
136 compat_fsid_t f_fsid;
143 struct compat_statfs64 {
151 compat_fsid_t f_fsid;
158 #define COMPAT_RLIM_INFINITY 0xffffffff
160 typedef u32 compat_old_sigset_t; /* at least 32 bits */
162 #define _COMPAT_NSIG 64
163 #define _COMPAT_NSIG_BPW 32
165 typedef u32 compat_sigset_word;
167 #define COMPAT_OFF_T_MAX 0x7fffffff
170 * A pointer passed in from user mode. This should not
171 * be used for syscall parameters, just declare them
172 * as pointers because the syscall entry code will have
173 * appropriately converted them already.
176 static inline void __user *compat_ptr(compat_uptr_t uptr)
178 return (void __user *)(unsigned long)(uptr & 0x7fffffffUL);
180 #define compat_ptr(uptr) compat_ptr(uptr)
184 static inline int is_compat_task(void)
186 return test_thread_flag(TIF_31BIT);
189 static inline void __user *arch_compat_alloc_user_space(long len)
193 stack = KSTK_ESP(current);
194 if (is_compat_task())
195 stack &= 0x7fffffffUL;
196 return (void __user *) (stack - len);
201 struct compat_ipc64_perm {
203 __compat_uid32_t uid;
204 __compat_gid32_t gid;
205 __compat_uid32_t cuid;
206 __compat_gid32_t cgid;
208 unsigned short __pad1;
210 unsigned short __pad2;
211 unsigned int __unused1;
212 unsigned int __unused2;
215 struct compat_semid64_ds {
216 struct compat_ipc64_perm sem_perm;
217 compat_ulong_t sem_otime;
218 compat_ulong_t sem_otime_high;
219 compat_ulong_t sem_ctime;
220 compat_ulong_t sem_ctime_high;
221 compat_ulong_t sem_nsems;
222 compat_ulong_t __unused1;
223 compat_ulong_t __unused2;
226 struct compat_msqid64_ds {
227 struct compat_ipc64_perm msg_perm;
228 compat_ulong_t msg_stime;
229 compat_ulong_t msg_stime_high;
230 compat_ulong_t msg_rtime;
231 compat_ulong_t msg_rtime_high;
232 compat_ulong_t msg_ctime;
233 compat_ulong_t msg_ctime_high;
234 compat_ulong_t msg_cbytes;
235 compat_ulong_t msg_qnum;
236 compat_ulong_t msg_qbytes;
237 compat_pid_t msg_lspid;
238 compat_pid_t msg_lrpid;
239 compat_ulong_t __unused1;
240 compat_ulong_t __unused2;
243 struct compat_shmid64_ds {
244 struct compat_ipc64_perm shm_perm;
245 compat_size_t shm_segsz;
246 compat_ulong_t shm_atime;
247 compat_ulong_t shm_atime_high;
248 compat_ulong_t shm_dtime;
249 compat_ulong_t shm_dtime_high;
250 compat_ulong_t shm_ctime;
251 compat_ulong_t shm_ctime_high;
252 compat_pid_t shm_cpid;
253 compat_pid_t shm_lpid;
254 compat_ulong_t shm_nattch;
255 compat_ulong_t __unused1;
256 compat_ulong_t __unused2;
258 #endif /* _ASM_S390X_COMPAT_H */