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   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 PSW32_MASK_PER          0x40000000UL
  11 #define PSW32_MASK_DAT          0x04000000UL
  12 #define PSW32_MASK_IO           0x02000000UL
  13 #define PSW32_MASK_EXT          0x01000000UL
  14 #define PSW32_MASK_KEY          0x00F00000UL
  15 #define PSW32_MASK_MCHECK       0x00040000UL
  16 #define PSW32_MASK_WAIT         0x00020000UL
  17 #define PSW32_MASK_PSTATE       0x00010000UL
  18 #define PSW32_MASK_ASC          0x0000C000UL
  19 #define PSW32_MASK_CC           0x00003000UL
  20 #define PSW32_MASK_PM           0x00000f00UL
  21
  22 #define PSW32_ADDR_AMODE31      0x80000000UL
  23 #define PSW32_ADDR_INSN         0x7FFFFFFFUL
  24
  25 #define PSW32_BASE_BITS         0x00080000UL
  26
  27 #define PSW32_ASC_PRIMARY       0x00000000UL
  28 #define PSW32_ASC_ACCREG        0x00004000UL
  29 #define PSW32_ASC_SECONDARY     0x00008000UL
  30 #define PSW32_ASC_HOME          0x0000C000UL
  31
  32 #define PSW32_MASK_MERGE(CURRENT,NEW) \
  33         (((CURRENT) & ~(PSW32_MASK_CC|PSW32_MASK_PM)) | \
  34          ((NEW) & (PSW32_MASK_CC|PSW32_MASK_PM)))
  35
  36 extern long psw32_user_bits;
  37
  38 #define COMPAT_USER_HZ  100
  39
  40 typedef u32             compat_size_t;
  41 typedef s32             compat_ssize_t;
  42 typedef s32             compat_time_t;
  43 typedef s32             compat_clock_t;
  44 typedef s32             compat_pid_t;
  45 typedef u16             __compat_uid_t;
  46 typedef u16             __compat_gid_t;
  47 typedef u32             __compat_uid32_t;
  48 typedef u32             __compat_gid32_t;
  49 typedef u16             compat_mode_t;
  50 typedef u32             compat_ino_t;
  51 typedef u16             compat_dev_t;
  52 typedef s32             compat_off_t;
  53 typedef s64             compat_loff_t;
  54 typedef u16             compat_nlink_t;
  55 typedef u16             compat_ipc_pid_t;
  56 typedef s32             compat_daddr_t;
  57 typedef u32             compat_caddr_t;
  58 typedef __kernel_fsid_t compat_fsid_t;
  59 typedef s32             compat_key_t;
  60 typedef s32             compat_timer_t;
  61
  62 typedef s32             compat_int_t;
  63 typedef s32             compat_long_t;
  64 typedef s64             compat_s64;
  65 typedef u32             compat_uint_t;
  66 typedef u32             compat_ulong_t;
  67 typedef u64             compat_u64;
  68
  69 struct compat_timespec {
  70         compat_time_t   tv_sec;
  71         s32             tv_nsec;
  72 };
  73
  74 struct compat_timeval {
  75         compat_time_t   tv_sec;
  76         s32             tv_usec;
  77 };
  78
  79 struct compat_stat {
  80         compat_dev_t    st_dev;
  81         u16             __pad1;
  82         compat_ino_t    st_ino;
  83         compat_mode_t   st_mode;
  84         compat_nlink_t  st_nlink;
  85         __compat_uid_t  st_uid;
  86         __compat_gid_t  st_gid;
  87         compat_dev_t    st_rdev;
  88         u16             __pad2;
  89         u32             st_size;
  90         u32             st_blksize;
  91         u32             st_blocks;
  92         u32             st_atime;
  93         u32             st_atime_nsec;
  94         u32             st_mtime;
  95         u32             st_mtime_nsec;
  96         u32             st_ctime;
  97         u32             st_ctime_nsec;
  98         u32             __unused4;
  99         u32             __unused5;
 100 };
 101
 102 struct compat_flock {
 103         short           l_type;
 104         short           l_whence;
 105         compat_off_t    l_start;
 106         compat_off_t    l_len;
 107         compat_pid_t    l_pid;
 108 };
 109
 110 #define F_GETLK64       12
 111 #define F_SETLK64       13
 112 #define F_SETLKW64      14
 113
 114 struct compat_flock64 {
 115         short           l_type;
 116         short           l_whence;
 117         compat_loff_t   l_start;
 118         compat_loff_t   l_len;
 119         compat_pid_t    l_pid;
 120 };
 121
 122 struct compat_statfs {
 123         s32             f_type;
 124         s32             f_bsize;
 125         s32             f_blocks;
 126         s32             f_bfree;
 127         s32             f_bavail;
 128         s32             f_files;
 129         s32             f_ffree;
 130         compat_fsid_t   f_fsid;
 131         s32             f_namelen;
 132         s32             f_frsize;
 133         s32             f_spare[6];
 134 };
 135
 136 #define COMPAT_RLIM_OLD_INFINITY        0x7fffffff
 137 #define COMPAT_RLIM_INFINITY            0xffffffff
 138
 139 typedef u32             compat_old_sigset_t;    /* at least 32 bits */
 140
 141 #define _COMPAT_NSIG            64
 142 #define _COMPAT_NSIG_BPW        32
 143
 144 typedef u32             compat_sigset_word;
 145
 146 #define COMPAT_OFF_T_MAX        0x7fffffff
 147 #define COMPAT_LOFF_T_MAX       0x7fffffffffffffffL
 148
 149 /*
 150  * A pointer passed in from user mode. This should not
 151  * be used for syscall parameters, just declare them
 152  * as pointers because the syscall entry code will have
 153  * appropriately converted them already.
 154  */
 155 typedef u32             compat_uptr_t;
 156
 157 static inline void __user *compat_ptr(compat_uptr_t uptr)
 158 {
 159         return (void __user *)(unsigned long)(uptr & 0x7fffffffUL);
 160 }
 161
 162 static inline compat_uptr_t ptr_to_compat(void __user *uptr)
 163 {
 164         return (u32)(unsigned long)uptr;
 165 }
 166
 167 #ifdef CONFIG_COMPAT
 168
 169 static inline int is_compat_task(void)
 170 {
 171         return test_thread_flag(TIF_31BIT);
 172 }
 173
 174 #else
 175
 176 static inline int is_compat_task(void)
 177 {
 178         return 0;
 179 }
 180
 181 #endif
 182
 183 static inline void __user *compat_alloc_user_space(long len)
 184 {
 185         unsigned long stack;
 186
 187         stack = KSTK_ESP(current);
 188         if (is_compat_task())
 189                 stack &= 0x7fffffffUL;
 190         return (void __user *) (stack - len);
 191 }
 192
 193 struct compat_ipc64_perm {
 194         compat_key_t key;
 195         __compat_uid32_t uid;
 196         __compat_gid32_t gid;
 197         __compat_uid32_t cuid;
 198         __compat_gid32_t cgid;
 199         compat_mode_t mode;
 200         unsigned short __pad1;
 201         unsigned short seq;
 202         unsigned short __pad2;
 203         unsigned int __unused1;
 204         unsigned int __unused2;
 205 };
 206
 207 struct compat_semid64_ds {
 208         struct compat_ipc64_perm sem_perm;
 209         compat_time_t  sem_otime;
 210         compat_ulong_t __pad1;
 211         compat_time_t  sem_ctime;
 212         compat_ulong_t __pad2;
 213         compat_ulong_t sem_nsems;
 214         compat_ulong_t __unused1;
 215         compat_ulong_t __unused2;
 216 };
 217
 218 struct compat_msqid64_ds {
 219         struct compat_ipc64_perm msg_perm;
 220         compat_time_t   msg_stime;
 221         compat_ulong_t __pad1;
 222         compat_time_t   msg_rtime;
 223         compat_ulong_t __pad2;
 224         compat_time_t   msg_ctime;
 225         compat_ulong_t __pad3;
 226         compat_ulong_t msg_cbytes;
 227         compat_ulong_t msg_qnum;
 228         compat_ulong_t msg_qbytes;
 229         compat_pid_t   msg_lspid;
 230         compat_pid_t   msg_lrpid;
 231         compat_ulong_t __unused1;
 232         compat_ulong_t __unused2;
 233 };
 234
 235 struct compat_shmid64_ds {
 236         struct compat_ipc64_perm shm_perm;
 237         compat_size_t  shm_segsz;
 238         compat_time_t  shm_atime;
 239         compat_ulong_t __pad1;
 240         compat_time_t  shm_dtime;
 241         compat_ulong_t __pad2;
 242         compat_time_t  shm_ctime;
 243         compat_ulong_t __pad3;
 244         compat_pid_t   shm_cpid;
 245         compat_pid_t   shm_lpid;
 246         compat_ulong_t shm_nattch;
 247         compat_ulong_t __unused1;
 248         compat_ulong_t __unused2;
 249 };
 250 #endif /* _ASM_S390X_COMPAT_H */