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 */ 288