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/thread_info.h> 9 10#define __TYPE_IS_PTR(t) (!__builtin_types_compatible_p(typeof(0?(t)0:0ULL), u64)) 11 12#define __SC_DELOUSE(t,v) ({ \ 13 BUILD_BUG_ON(sizeof(t) > 4 && !__TYPE_IS_PTR(t)); \ 14 (t)(__TYPE_IS_PTR(t) ? ((v) & 0x7fffffff) : (v)); \ 15}) 16 17#define PSW32_MASK_PER 0x40000000UL 18#define PSW32_MASK_DAT 0x04000000UL 19#define PSW32_MASK_IO 0x02000000UL 20#define PSW32_MASK_EXT 0x01000000UL 21#define PSW32_MASK_KEY 0x00F00000UL 22#define PSW32_MASK_BASE 0x00080000UL /* Always one */ 23#define PSW32_MASK_MCHECK 0x00040000UL 24#define PSW32_MASK_WAIT 0x00020000UL 25#define PSW32_MASK_PSTATE 0x00010000UL 26#define PSW32_MASK_ASC 0x0000C000UL 27#define PSW32_MASK_CC 0x00003000UL 28#define PSW32_MASK_PM 0x00000f00UL 29#define PSW32_MASK_RI 0x00000080UL 30 31#define PSW32_MASK_USER 0x0000FF00UL 32 33#define PSW32_ADDR_AMODE 0x80000000UL 34#define PSW32_ADDR_INSN 0x7FFFFFFFUL 35 36#define PSW32_DEFAULT_KEY (((u32) PAGE_DEFAULT_ACC) << 20) 37 38#define PSW32_ASC_PRIMARY 0x00000000UL 39#define PSW32_ASC_ACCREG 0x00004000UL 40#define PSW32_ASC_SECONDARY 0x00008000UL 41#define PSW32_ASC_HOME 0x0000C000UL 42 43#define PSW32_USER_BITS (PSW32_MASK_DAT | PSW32_MASK_IO | PSW32_MASK_EXT | \ 44 PSW32_DEFAULT_KEY | PSW32_MASK_BASE | \ 45 PSW32_MASK_MCHECK | PSW32_MASK_PSTATE | \ 46 PSW32_ASC_PRIMARY) 47 48#define COMPAT_USER_HZ 100 49#define COMPAT_UTS_MACHINE "s390\0\0\0\0" 50 51typedef u32 compat_size_t; 52typedef s32 compat_ssize_t; 53typedef s32 compat_time_t; 54typedef s32 compat_clock_t; 55typedef s32 compat_pid_t; 56typedef u16 __compat_uid_t; 57typedef u16 __compat_gid_t; 58typedef u32 __compat_uid32_t; 59typedef u32 __compat_gid32_t; 60typedef u16 compat_mode_t; 61typedef u32 compat_ino_t; 62typedef u16 compat_dev_t; 63typedef s32 compat_off_t; 64typedef s64 compat_loff_t; 65typedef u16 compat_nlink_t; 66typedef u16 compat_ipc_pid_t; 67typedef s32 compat_daddr_t; 68typedef u32 compat_caddr_t; 69typedef __kernel_fsid_t compat_fsid_t; 70typedef s32 compat_key_t; 71typedef s32 compat_timer_t; 72 73typedef s32 compat_int_t; 74typedef s32 compat_long_t; 75typedef s64 compat_s64; 76typedef u32 compat_uint_t; 77typedef u32 compat_ulong_t; 78typedef u64 compat_u64; 79typedef u32 compat_uptr_t; 80 81typedef struct { 82 u32 mask; 83 u32 addr; 84} __aligned(8) psw_compat_t; 85 86typedef struct { 87 psw_compat_t psw; 88 u32 gprs[NUM_GPRS]; 89 u32 acrs[NUM_ACRS]; 90 u32 orig_gpr2; 91} s390_compat_regs; 92 93typedef struct { 94 u32 gprs_high[NUM_GPRS]; 95} s390_compat_regs_high; 96 97struct compat_timespec { 98 compat_time_t tv_sec; 99 s32 tv_nsec; 100}; 101 102struct compat_timeval { 103 compat_time_t tv_sec; 104 s32 tv_usec; 105}; 106 107struct compat_stat { 108 compat_dev_t st_dev; 109 u16 __pad1; 110 compat_ino_t st_ino; 111 compat_mode_t st_mode; 112 compat_nlink_t st_nlink; 113 __compat_uid_t st_uid; 114 __compat_gid_t st_gid; 115 compat_dev_t st_rdev; 116 u16 __pad2; 117 u32 st_size; 118 u32 st_blksize; 119 u32 st_blocks; 120 u32 st_atime; 121 u32 st_atime_nsec; 122 u32 st_mtime; 123 u32 st_mtime_nsec; 124 u32 st_ctime; 125 u32 st_ctime_nsec; 126 u32 __unused4; 127 u32 __unused5; 128}; 129 130struct compat_flock { 131 short l_type; 132 short l_whence; 133 compat_off_t l_start; 134 compat_off_t l_len; 135 compat_pid_t l_pid; 136}; 137 138#define F_GETLK64 12 139#define F_SETLK64 13 140#define F_SETLKW64 14 141 142struct compat_flock64 { 143 short l_type; 144 short l_whence; 145 compat_loff_t l_start; 146 compat_loff_t l_len; 147 compat_pid_t l_pid; 148}; 149 150struct compat_statfs { 151 u32 f_type; 152 u32 f_bsize; 153 u32 f_blocks; 154 u32 f_bfree; 155 u32 f_bavail; 156 u32 f_files; 157 u32 f_ffree; 158 compat_fsid_t f_fsid; 159 u32 f_namelen; 160 u32 f_frsize; 161 u32 f_flags; 162 u32 f_spare[4]; 163}; 164 165struct compat_statfs64 { 166 u32 f_type; 167 u32 f_bsize; 168 u64 f_blocks; 169 u64 f_bfree; 170 u64 f_bavail; 171 u64 f_files; 172 u64 f_ffree; 173 compat_fsid_t f_fsid; 174 u32 f_namelen; 175 u32 f_frsize; 176 u32 f_flags; 177 u32 f_spare[4]; 178}; 179 180#define COMPAT_RLIM_OLD_INFINITY 0x7fffffff 181#define COMPAT_RLIM_INFINITY 0xffffffff 182 183typedef u32 compat_old_sigset_t; /* at least 32 bits */ 184 185#define _COMPAT_NSIG 64 186#define _COMPAT_NSIG_BPW 32 187 188typedef u32 compat_sigset_word; 189 190typedef union compat_sigval { 191 compat_int_t sival_int; 192 compat_uptr_t sival_ptr; 193} compat_sigval_t; 194 195typedef struct compat_siginfo { 196 int si_signo; 197 int si_errno; 198 int si_code; 199 200 union { 201 int _pad[128/sizeof(int) - 3]; 202 203 /* kill() */ 204 struct { 205 pid_t _pid; /* sender's pid */ 206 uid_t _uid; /* sender's uid */ 207 } _kill; 208 209 /* POSIX.1b timers */ 210 struct { 211 compat_timer_t _tid; /* timer id */ 212 int _overrun; /* overrun count */ 213 compat_sigval_t _sigval; /* same as below */ 214 int _sys_private; /* not to be passed to user */ 215 } _timer; 216 217 /* POSIX.1b signals */ 218 struct { 219 pid_t _pid; /* sender's pid */ 220 uid_t _uid; /* sender's uid */ 221 compat_sigval_t _sigval; 222 } _rt; 223 224 /* SIGCHLD */ 225 struct { 226 pid_t _pid; /* which child */ 227 uid_t _uid; /* sender's uid */ 228 int _status;/* exit code */ 229 compat_clock_t _utime; 230 compat_clock_t _stime; 231 } _sigchld; 232 233 /* SIGILL, SIGFPE, SIGSEGV, SIGBUS */ 234 struct { 235 __u32 _addr; /* faulting insn/memory ref. - pointer */ 236 } _sigfault; 237 238 /* SIGPOLL */ 239 struct { 240 int _band; /* POLL_IN, POLL_OUT, POLL_MSG */ 241 int _fd; 242 } _sigpoll; 243 } _sifields; 244} compat_siginfo_t; 245 246/* 247 * How these fields are to be accessed. 248 */ 249#define si_pid _sifields._kill._pid 250#define si_uid _sifields._kill._uid 251#define si_status _sifields._sigchld._status 252#define si_utime _sifields._sigchld._utime 253#define si_stime _sifields._sigchld._stime 254#define si_value _sifields._rt._sigval 255#define si_int _sifields._rt._sigval.sival_int 256#define si_ptr _sifields._rt._sigval.sival_ptr 257#define si_addr _sifields._sigfault._addr 258#define si_band _sifields._sigpoll._band 259#define si_fd _sifields._sigpoll._fd 260#define si_tid _sifields._timer._tid 261#define si_overrun _sifields._timer._overrun 262 263#define COMPAT_OFF_T_MAX 0x7fffffff 264#define COMPAT_LOFF_T_MAX 0x7fffffffffffffffL 265 266/* 267 * A pointer passed in from user mode. This should not 268 * be used for syscall parameters, just declare them 269 * as pointers because the syscall entry code will have 270 * appropriately converted them already. 271 */ 272 273static inline void __user *compat_ptr(compat_uptr_t uptr) 274{ 275 return (void __user *)(unsigned long)(uptr & 0x7fffffffUL); 276} 277 278static inline compat_uptr_t ptr_to_compat(void __user *uptr) 279{ 280 return (u32)(unsigned long)uptr; 281} 282 283#ifdef CONFIG_COMPAT 284 285static inline int is_compat_task(void) 286{ 287 return test_thread_flag(TIF_31BIT); 288} 289 290static inline void __user *arch_compat_alloc_user_space(long len) 291{ 292 unsigned long stack; 293 294 stack = KSTK_ESP(current); 295 if (is_compat_task()) 296 stack &= 0x7fffffffUL; 297 return (void __user *) (stack - len); 298} 299 300#endif 301 302struct compat_ipc64_perm { 303 compat_key_t key; 304 __compat_uid32_t uid; 305 __compat_gid32_t gid; 306 __compat_uid32_t cuid; 307 __compat_gid32_t cgid; 308 compat_mode_t mode; 309 unsigned short __pad1; 310 unsigned short seq; 311 unsigned short __pad2; 312 unsigned int __unused1; 313 unsigned int __unused2; 314}; 315 316struct compat_semid64_ds { 317 struct compat_ipc64_perm sem_perm; 318 compat_time_t sem_otime; 319 compat_ulong_t __pad1; 320 compat_time_t sem_ctime; 321 compat_ulong_t __pad2; 322 compat_ulong_t sem_nsems; 323 compat_ulong_t __unused1; 324 compat_ulong_t __unused2; 325}; 326 327struct compat_msqid64_ds { 328 struct compat_ipc64_perm msg_perm; 329 compat_time_t msg_stime; 330 compat_ulong_t __pad1; 331 compat_time_t msg_rtime; 332 compat_ulong_t __pad2; 333 compat_time_t msg_ctime; 334 compat_ulong_t __pad3; 335 compat_ulong_t msg_cbytes; 336 compat_ulong_t msg_qnum; 337 compat_ulong_t msg_qbytes; 338 compat_pid_t msg_lspid; 339 compat_pid_t msg_lrpid; 340 compat_ulong_t __unused1; 341 compat_ulong_t __unused2; 342}; 343 344struct compat_shmid64_ds { 345 struct compat_ipc64_perm shm_perm; 346 compat_size_t shm_segsz; 347 compat_time_t shm_atime; 348 compat_ulong_t __pad1; 349 compat_time_t shm_dtime; 350 compat_ulong_t __pad2; 351 compat_time_t shm_ctime; 352 compat_ulong_t __pad3; 353 compat_pid_t shm_cpid; 354 compat_pid_t shm_lpid; 355 compat_ulong_t shm_nattch; 356 compat_ulong_t __unused1; 357 compat_ulong_t __unused2; 358}; 359#endif /* _ASM_S390X_COMPAT_H */ 360