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/sched/task_stack.h> 9 #include <linux/thread_info.h> 10 11 #define __TYPE_IS_PTR(t) (!__builtin_types_compatible_p( \ 12 typeof(0?(__force t)0:0ULL), u64)) 13 14 #define __SC_DELOUSE(t,v) ({ \ 15 BUILD_BUG_ON(sizeof(t) > 4 && !__TYPE_IS_PTR(t)); \ 16 (__force t)(__TYPE_IS_PTR(t) ? ((v) & 0x7fffffff) : (v)); \ 17 }) 18 19 #define PSW32_MASK_PER 0x40000000UL 20 #define PSW32_MASK_DAT 0x04000000UL 21 #define PSW32_MASK_IO 0x02000000UL 22 #define PSW32_MASK_EXT 0x01000000UL 23 #define PSW32_MASK_KEY 0x00F00000UL 24 #define PSW32_MASK_BASE 0x00080000UL /* Always one */ 25 #define PSW32_MASK_MCHECK 0x00040000UL 26 #define PSW32_MASK_WAIT 0x00020000UL 27 #define PSW32_MASK_PSTATE 0x00010000UL 28 #define PSW32_MASK_ASC 0x0000C000UL 29 #define PSW32_MASK_CC 0x00003000UL 30 #define PSW32_MASK_PM 0x00000f00UL 31 #define PSW32_MASK_RI 0x00000080UL 32 33 #define PSW32_MASK_USER 0x0000FF00UL 34 35 #define PSW32_ADDR_AMODE 0x80000000UL 36 #define PSW32_ADDR_INSN 0x7FFFFFFFUL 37 38 #define PSW32_DEFAULT_KEY (((u32) PAGE_DEFAULT_ACC) << 20) 39 40 #define PSW32_ASC_PRIMARY 0x00000000UL 41 #define PSW32_ASC_ACCREG 0x00004000UL 42 #define PSW32_ASC_SECONDARY 0x00008000UL 43 #define PSW32_ASC_HOME 0x0000C000UL 44 45 #define PSW32_USER_BITS (PSW32_MASK_DAT | PSW32_MASK_IO | PSW32_MASK_EXT | \ 46 PSW32_DEFAULT_KEY | PSW32_MASK_BASE | \ 47 PSW32_MASK_MCHECK | PSW32_MASK_PSTATE | \ 48 PSW32_ASC_PRIMARY) 49 50 #define COMPAT_USER_HZ 100 51 #define COMPAT_UTS_MACHINE "s390\0\0\0\0" 52 53 typedef u32 compat_size_t; 54 typedef s32 compat_ssize_t; 55 typedef s32 compat_time_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; 74 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; 82 83 typedef struct { 84 u32 mask; 85 u32 addr; 86 } __aligned(8) psw_compat_t; 87 88 typedef 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 95 typedef struct { 96 u32 gprs_high[NUM_GPRS]; 97 } s390_compat_regs_high; 98 99 struct compat_timespec { 100 compat_time_t tv_sec; 101 s32 tv_nsec; 102 }; 103 104 struct compat_timeval { 105 compat_time_t tv_sec; 106 s32 tv_usec; 107 }; 108 109 struct compat_stat { 110 compat_dev_t st_dev; 111 u16 __pad1; 112 compat_ino_t st_ino; 113 compat_mode_t st_mode; 114 compat_nlink_t st_nlink; 115 __compat_uid_t st_uid; 116 __compat_gid_t st_gid; 117 compat_dev_t st_rdev; 118 u16 __pad2; 119 u32 st_size; 120 u32 st_blksize; 121 u32 st_blocks; 122 u32 st_atime; 123 u32 st_atime_nsec; 124 u32 st_mtime; 125 u32 st_mtime_nsec; 126 u32 st_ctime; 127 u32 st_ctime_nsec; 128 u32 __unused4; 129 u32 __unused5; 130 }; 131 132 struct compat_flock { 133 short l_type; 134 short l_whence; 135 compat_off_t l_start; 136 compat_off_t l_len; 137 compat_pid_t l_pid; 138 }; 139 140 #define F_GETLK64 12 141 #define F_SETLK64 13 142 #define F_SETLKW64 14 143 144 struct compat_flock64 { 145 short l_type; 146 short l_whence; 147 compat_loff_t l_start; 148 compat_loff_t l_len; 149 compat_pid_t l_pid; 150 }; 151 152 struct compat_statfs { 153 u32 f_type; 154 u32 f_bsize; 155 u32 f_blocks; 156 u32 f_bfree; 157 u32 f_bavail; 158 u32 f_files; 159 u32 f_ffree; 160 compat_fsid_t f_fsid; 161 u32 f_namelen; 162 u32 f_frsize; 163 u32 f_flags; 164 u32 f_spare[4]; 165 }; 166 167 struct compat_statfs64 { 168 u32 f_type; 169 u32 f_bsize; 170 u64 f_blocks; 171 u64 f_bfree; 172 u64 f_bavail; 173 u64 f_files; 174 u64 f_ffree; 175 compat_fsid_t f_fsid; 176 u32 f_namelen; 177 u32 f_frsize; 178 u32 f_flags; 179 u32 f_spare[4]; 180 }; 181 182 #define COMPAT_RLIM_INFINITY 0xffffffff 183 184 typedef u32 compat_old_sigset_t; /* at least 32 bits */ 185 186 #define _COMPAT_NSIG 64 187 #define _COMPAT_NSIG_BPW 32 188 189 typedef u32 compat_sigset_word; 190 191 typedef union compat_sigval { 192 compat_int_t sival_int; 193 compat_uptr_t sival_ptr; 194 } compat_sigval_t; 195 196 typedef struct compat_siginfo { 197 int si_signo; 198 int si_errno; 199 int si_code; 200 201 union { 202 int _pad[128/sizeof(int) - 3]; 203 204 /* kill() */ 205 struct { 206 pid_t _pid; /* sender's pid */ 207 uid_t _uid; /* sender's uid */ 208 } _kill; 209 210 /* POSIX.1b timers */ 211 struct { 212 compat_timer_t _tid; /* timer id */ 213 int _overrun; /* overrun count */ 214 compat_sigval_t _sigval; /* same as below */ 215 int _sys_private; /* not to be passed to user */ 216 } _timer; 217 218 /* POSIX.1b signals */ 219 struct { 220 pid_t _pid; /* sender's pid */ 221 uid_t _uid; /* sender's uid */ 222 compat_sigval_t _sigval; 223 } _rt; 224 225 /* SIGCHLD */ 226 struct { 227 pid_t _pid; /* which child */ 228 uid_t _uid; /* sender's uid */ 229 int _status;/* exit code */ 230 compat_clock_t _utime; 231 compat_clock_t _stime; 232 } _sigchld; 233 234 /* SIGILL, SIGFPE, SIGSEGV, SIGBUS */ 235 struct { 236 __u32 _addr; /* faulting insn/memory ref. - pointer */ 237 } _sigfault; 238 239 /* SIGPOLL */ 240 struct { 241 int _band; /* POLL_IN, POLL_OUT, POLL_MSG */ 242 int _fd; 243 } _sigpoll; 244 } _sifields; 245 } compat_siginfo_t; 246 247 /* 248 * How these fields are to be accessed. 249 */ 250 #define si_pid _sifields._kill._pid 251 #define si_uid _sifields._kill._uid 252 #define si_status _sifields._sigchld._status 253 #define si_utime _sifields._sigchld._utime 254 #define si_stime _sifields._sigchld._stime 255 #define si_value _sifields._rt._sigval 256 #define si_int _sifields._rt._sigval.sival_int 257 #define si_ptr _sifields._rt._sigval.sival_ptr 258 #define si_addr _sifields._sigfault._addr 259 #define si_band _sifields._sigpoll._band 260 #define si_fd _sifields._sigpoll._fd 261 #define si_tid _sifields._timer._tid 262 #define si_overrun _sifields._timer._overrun 263 264 #define COMPAT_OFF_T_MAX 0x7fffffff 265 #define COMPAT_LOFF_T_MAX 0x7fffffffffffffffL 266 267 /* 268 * A pointer passed in from user mode. This should not 269 * be used for syscall parameters, just declare them 270 * as pointers because the syscall entry code will have 271 * appropriately converted them already. 272 */ 273 274 static inline void __user *compat_ptr(compat_uptr_t uptr) 275 { 276 return (void __user *)(unsigned long)(uptr & 0x7fffffffUL); 277 } 278 279 static inline compat_uptr_t ptr_to_compat(void __user *uptr) 280 { 281 return (u32)(unsigned long)uptr; 282 } 283 284 #ifdef CONFIG_COMPAT 285 286 static inline int is_compat_task(void) 287 { 288 return test_thread_flag(TIF_31BIT); 289 } 290 291 static inline void __user *arch_compat_alloc_user_space(long len) 292 { 293 unsigned long stack; 294 295 stack = KSTK_ESP(current); 296 if (is_compat_task()) 297 stack &= 0x7fffffffUL; 298 return (void __user *) (stack - len); 299 } 300 301 #endif 302 303 struct compat_ipc64_perm { 304 compat_key_t key; 305 __compat_uid32_t uid; 306 __compat_gid32_t gid; 307 __compat_uid32_t cuid; 308 __compat_gid32_t cgid; 309 compat_mode_t mode; 310 unsigned short __pad1; 311 unsigned short seq; 312 unsigned short __pad2; 313 unsigned int __unused1; 314 unsigned int __unused2; 315 }; 316 317 struct compat_semid64_ds { 318 struct compat_ipc64_perm sem_perm; 319 compat_time_t sem_otime; 320 compat_ulong_t __pad1; 321 compat_time_t sem_ctime; 322 compat_ulong_t __pad2; 323 compat_ulong_t sem_nsems; 324 compat_ulong_t __unused1; 325 compat_ulong_t __unused2; 326 }; 327 328 struct compat_msqid64_ds { 329 struct compat_ipc64_perm msg_perm; 330 compat_time_t msg_stime; 331 compat_ulong_t __pad1; 332 compat_time_t msg_rtime; 333 compat_ulong_t __pad2; 334 compat_time_t msg_ctime; 335 compat_ulong_t __pad3; 336 compat_ulong_t msg_cbytes; 337 compat_ulong_t msg_qnum; 338 compat_ulong_t msg_qbytes; 339 compat_pid_t msg_lspid; 340 compat_pid_t msg_lrpid; 341 compat_ulong_t __unused1; 342 compat_ulong_t __unused2; 343 }; 344 345 struct compat_shmid64_ds { 346 struct compat_ipc64_perm shm_perm; 347 compat_size_t shm_segsz; 348 compat_time_t shm_atime; 349 compat_ulong_t __pad1; 350 compat_time_t shm_dtime; 351 compat_ulong_t __pad2; 352 compat_time_t shm_ctime; 353 compat_ulong_t __pad3; 354 compat_pid_t shm_cpid; 355 compat_pid_t shm_lpid; 356 compat_ulong_t shm_nattch; 357 compat_ulong_t __unused1; 358 compat_ulong_t __unused2; 359 }; 360 #endif /* _ASM_S390X_COMPAT_H */ 361