arch/s390/include/asm/compat.h

   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 #define __SC_DELOUSE(t,v) (t)(__TYPE_IS_PTR(t) ? ((v) & 0x7fffffff) : (v))
  12
  13 #define PSW32_MASK_PER          0x40000000UL
  14 #define PSW32_MASK_DAT          0x04000000UL
  15 #define PSW32_MASK_IO           0x02000000UL
  16 #define PSW32_MASK_EXT          0x01000000UL
  17 #define PSW32_MASK_KEY          0x00F00000UL
  18 #define PSW32_MASK_BASE         0x00080000UL    /* Always one */
  19 #define PSW32_MASK_MCHECK       0x00040000UL
  20 #define PSW32_MASK_WAIT         0x00020000UL
  21 #define PSW32_MASK_PSTATE       0x00010000UL
  22 #define PSW32_MASK_ASC          0x0000C000UL
  23 #define PSW32_MASK_CC           0x00003000UL
  24 #define PSW32_MASK_PM           0x00000f00UL
  25 #define PSW32_MASK_RI           0x00000080UL
  26
  27 #define PSW32_MASK_USER         0x0000FF00UL
  28
  29 #define PSW32_ADDR_AMODE        0x80000000UL
  30 #define PSW32_ADDR_INSN         0x7FFFFFFFUL
  31
  32 #define PSW32_DEFAULT_KEY       (((u32) PAGE_DEFAULT_ACC) << 20)
  33
  34 #define PSW32_ASC_PRIMARY       0x00000000UL
  35 #define PSW32_ASC_ACCREG        0x00004000UL
  36 #define PSW32_ASC_SECONDARY     0x00008000UL
  37 #define PSW32_ASC_HOME          0x0000C000UL
  38
  39 extern u32 psw32_user_bits;
  40
  41 #define COMPAT_USER_HZ          100
  42 #define COMPAT_UTS_MACHINE      "s390\0\0\0\0"
  43
  44 typedef u32             compat_size_t;
  45 typedef s32             compat_ssize_t;
  46 typedef s32             compat_time_t;
  47 typedef s32             compat_clock_t;
  48 typedef s32             compat_pid_t;
  49 typedef u16             __compat_uid_t;
  50 typedef u16             __compat_gid_t;
  51 typedef u32             __compat_uid32_t;
  52 typedef u32             __compat_gid32_t;
  53 typedef u16             compat_mode_t;
  54 typedef u32             compat_ino_t;
  55 typedef u16             compat_dev_t;
  56 typedef s32             compat_off_t;
  57 typedef s64             compat_loff_t;
  58 typedef u16             compat_nlink_t;
  59 typedef u16             compat_ipc_pid_t;
  60 typedef s32             compat_daddr_t;
  61 typedef u32             compat_caddr_t;
  62 typedef __kernel_fsid_t compat_fsid_t;
  63 typedef s32             compat_key_t;
  64 typedef s32             compat_timer_t;
  65
  66 typedef s32             compat_int_t;
  67 typedef s32             compat_long_t;
  68 typedef s64             compat_s64;
  69 typedef u32             compat_uint_t;
  70 typedef u32             compat_ulong_t;
  71 typedef u64             compat_u64;
  72 typedef u32             compat_uptr_t;
  73
  74 typedef struct {
  75         u32 mask;
  76         u32 addr;
  77 } __aligned(8) psw_compat_t;
  78
  79 typedef struct {
  80         psw_compat_t psw;
  81         u32 gprs[NUM_GPRS];
  82         u32 acrs[NUM_ACRS];
  83         u32 orig_gpr2;
  84 } s390_compat_regs;
  85
  86 typedef struct {
  87         u32 gprs_high[NUM_GPRS];
  88 } s390_compat_regs_high;
  89
  90 struct compat_timespec {
  91         compat_time_t   tv_sec;
  92         s32             tv_nsec;
  93 };
  94
  95 struct compat_timeval {
  96         compat_time_t   tv_sec;
  97         s32             tv_usec;
  98 };
  99
 100 struct compat_stat {
 101         compat_dev_t    st_dev;
 102         u16             __pad1;
 103         compat_ino_t    st_ino;
 104         compat_mode_t   st_mode;
 105         compat_nlink_t  st_nlink;
 106         __compat_uid_t  st_uid;
 107         __compat_gid_t  st_gid;
 108         compat_dev_t    st_rdev;
 109         u16             __pad2;
 110         u32             st_size;
 111         u32             st_blksize;
 112         u32             st_blocks;
 113         u32             st_atime;
 114         u32             st_atime_nsec;
 115         u32             st_mtime;
 116         u32             st_mtime_nsec;
 117         u32             st_ctime;
 118         u32             st_ctime_nsec;
 119         u32             __unused4;
 120         u32             __unused5;
 121 };
 122
 123 struct compat_flock {
 124         short           l_type;
 125         short           l_whence;
 126         compat_off_t    l_start;
 127         compat_off_t    l_len;
 128         compat_pid_t    l_pid;
 129 };
 130
 131 #define F_GETLK64       12
 132 #define F_SETLK64       13
 133 #define F_SETLKW64      14
 134
 135 struct compat_flock64 {
 136         short           l_type;
 137         short           l_whence;
 138         compat_loff_t   l_start;
 139         compat_loff_t   l_len;
 140         compat_pid_t    l_pid;
 141 };
 142
 143 struct compat_statfs {
 144         u32             f_type;
 145         u32             f_bsize;
 146         u32             f_blocks;
 147         u32             f_bfree;
 148         u32             f_bavail;
 149         u32             f_files;
 150         u32             f_ffree;
 151         compat_fsid_t   f_fsid;
 152         u32             f_namelen;
 153         u32             f_frsize;
 154         u32             f_flags;
 155         u32             f_spare[4];
 156 };
 157
 158 struct compat_statfs64 {
 159         u32             f_type;
 160         u32             f_bsize;
 161         u64             f_blocks;
 162         u64             f_bfree;
 163         u64             f_bavail;
 164         u64             f_files;
 165         u64             f_ffree;
 166         compat_fsid_t   f_fsid;
 167         u32             f_namelen;
 168         u32             f_frsize;
 169         u32             f_flags;
 170         u32             f_spare[4];
 171 };
 172
 173 #define COMPAT_RLIM_OLD_INFINITY        0x7fffffff
 174 #define COMPAT_RLIM_INFINITY            0xffffffff
 175
 176 typedef u32             compat_old_sigset_t;    /* at least 32 bits */
 177
 178 #define _COMPAT_NSIG            64
 179 #define _COMPAT_NSIG_BPW        32
 180
 181 typedef u32             compat_sigset_word;
 182
 183 typedef union compat_sigval {
 184         compat_int_t    sival_int;
 185         compat_uptr_t   sival_ptr;
 186 } compat_sigval_t;
 187
 188 typedef struct compat_siginfo {
 189         int     si_signo;
 190         int     si_errno;
 191         int     si_code;
 192
 193         union {
 194                 int _pad[128/sizeof(int) - 3];
 195
 196                 /* kill() */
 197                 struct {
 198                         pid_t   _pid;   /* sender's pid */
 199                         uid_t   _uid;   /* sender's uid */
 200                 } _kill;
 201
 202                 /* POSIX.1b timers */
 203                 struct {
 204                         compat_timer_t _tid;            /* timer id */
 205                         int _overrun;                   /* overrun count */
 206                         compat_sigval_t _sigval;        /* same as below */
 207                         int _sys_private;       /* not to be passed to user */
 208                 } _timer;
 209
 210                 /* POSIX.1b signals */
 211                 struct {
 212                         pid_t                   _pid;   /* sender's pid */
 213                         uid_t                   _uid;   /* sender's uid */
 214                         compat_sigval_t         _sigval;
 215                 } _rt;
 216
 217                 /* SIGCHLD */
 218                 struct {
 219                         pid_t                   _pid;   /* which child */
 220                         uid_t                   _uid;   /* sender's uid */
 221                         int                     _status;/* exit code */
 222                         compat_clock_t          _utime;
 223                         compat_clock_t          _stime;
 224                 } _sigchld;
 225
 226                 /* SIGILL, SIGFPE, SIGSEGV, SIGBUS */
 227                 struct {
 228                         __u32   _addr;  /* faulting insn/memory ref. - pointer */
 229                 } _sigfault;
 230
 231                 /* SIGPOLL */
 232                 struct {
 233                         int     _band;  /* POLL_IN, POLL_OUT, POLL_MSG */
 234                         int     _fd;
 235                 } _sigpoll;
 236         } _sifields;
 237 } compat_siginfo_t;
 238
 239 /*
 240  * How these fields are to be accessed.
 241  */
 242 #define si_pid          _sifields._kill._pid
 243 #define si_uid          _sifields._kill._uid
 244 #define si_status       _sifields._sigchld._status
 245 #define si_utime        _sifields._sigchld._utime
 246 #define si_stime        _sifields._sigchld._stime
 247 #define si_value        _sifields._rt._sigval
 248 #define si_int          _sifields._rt._sigval.sival_int
 249 #define si_ptr          _sifields._rt._sigval.sival_ptr
 250 #define si_addr         _sifields._sigfault._addr
 251 #define si_band         _sifields._sigpoll._band
 252 #define si_fd           _sifields._sigpoll._fd
 253 #define si_tid          _sifields._timer._tid
 254 #define si_overrun      _sifields._timer._overrun
 255
 256 #define COMPAT_OFF_T_MAX        0x7fffffff
 257 #define COMPAT_LOFF_T_MAX       0x7fffffffffffffffL
 258
 259 /*
 260  * A pointer passed in from user mode. This should not
 261  * be used for syscall parameters, just declare them
 262  * as pointers because the syscall entry code will have
 263  * appropriately converted them already.
 264  */
 265
 266 static inline void __user *compat_ptr(compat_uptr_t uptr)
 267 {
 268         return (void __user *)(unsigned long)(uptr & 0x7fffffffUL);
 269 }
 270
 271 static inline compat_uptr_t ptr_to_compat(void __user *uptr)
 272 {
 273         return (u32)(unsigned long)uptr;
 274 }
 275
 276 #ifdef CONFIG_COMPAT
 277
 278 static inline int is_compat_task(void)
 279 {
 280         return is_32bit_task();
 281 }
 282
 283 static inline void __user *arch_compat_alloc_user_space(long len)
 284 {
 285         unsigned long stack;
 286
 287         stack = KSTK_ESP(current);
 288         if (is_compat_task())
 289                 stack &= 0x7fffffffUL;
 290         return (void __user *) (stack - len);
 291 }
 292
 293 #endif
 294
 295 struct compat_ipc64_perm {
 296         compat_key_t key;
 297         __compat_uid32_t uid;
 298         __compat_gid32_t gid;
 299         __compat_uid32_t cuid;
 300         __compat_gid32_t cgid;
 301         compat_mode_t mode;
 302         unsigned short __pad1;
 303         unsigned short seq;
 304         unsigned short __pad2;
 305         unsigned int __unused1;
 306         unsigned int __unused2;
 307 };
 308
 309 struct compat_semid64_ds {
 310         struct compat_ipc64_perm sem_perm;
 311         compat_time_t  sem_otime;
 312         compat_ulong_t __pad1;
 313         compat_time_t  sem_ctime;
 314         compat_ulong_t __pad2;
 315         compat_ulong_t sem_nsems;
 316         compat_ulong_t __unused1;
 317         compat_ulong_t __unused2;
 318 };
 319
 320 struct compat_msqid64_ds {
 321         struct compat_ipc64_perm msg_perm;
 322         compat_time_t   msg_stime;
 323         compat_ulong_t __pad1;
 324         compat_time_t   msg_rtime;
 325         compat_ulong_t __pad2;
 326         compat_time_t   msg_ctime;
 327         compat_ulong_t __pad3;
 328         compat_ulong_t msg_cbytes;
 329         compat_ulong_t msg_qnum;
 330         compat_ulong_t msg_qbytes;
 331         compat_pid_t   msg_lspid;
 332         compat_pid_t   msg_lrpid;
 333         compat_ulong_t __unused1;
 334         compat_ulong_t __unused2;
 335 };
 336
 337 struct compat_shmid64_ds {
 338         struct compat_ipc64_perm shm_perm;
 339         compat_size_t  shm_segsz;
 340         compat_time_t  shm_atime;
 341         compat_ulong_t __pad1;
 342         compat_time_t  shm_dtime;
 343         compat_ulong_t __pad2;
 344         compat_time_t  shm_ctime;
 345         compat_ulong_t __pad3;
 346         compat_pid_t   shm_cpid;
 347         compat_pid_t   shm_lpid;
 348         compat_ulong_t shm_nattch;
 349         compat_ulong_t __unused1;
 350         compat_ulong_t __unused2;
 351 };
 352 #endif /* _ASM_S390X_COMPAT_H */