arch/s390/kernel/compat_linux.h

   1 #ifndef _ASM_S390X_S390_H
   2 #define _ASM_S390X_S390_H
   3
   4 #include <linux/config.h>
   5 #include <linux/compat.h>
   6 #include <linux/socket.h>
   7 #include <linux/syscalls.h>
   8 #include <linux/nfs_fs.h>
   9 #include <linux/sunrpc/svc.h>
  10 #include <linux/nfsd/nfsd.h>
  11 #include <linux/nfsd/export.h>
  12
  13 /* Macro that masks the high order bit of an 32 bit pointer and converts it*/
  14 /*       to a 64 bit pointer */
  15 #define A(__x) ((unsigned long)((__x) & 0x7FFFFFFFUL))
  16 #define AA(__x)                         \
  17         ((unsigned long)(__x))
  18
  19 /* Now 32bit compatibility types */
  20 struct ipc_kludge_32 {
  21         __u32   msgp;                           /* pointer              */
  22         __s32   msgtyp;
  23 };
  24
  25 struct old_sigaction32 {
  26        __u32                    sa_handler;     /* Really a pointer, but need to deal with 32 bits */
  27        compat_old_sigset_t      sa_mask;        /* A 32 bit mask */
  28        __u32                    sa_flags;
  29        __u32                    sa_restorer;    /* Another 32 bit pointer */
  30 };
  31
  32 typedef struct compat_siginfo {
  33         int     si_signo;
  34         int     si_errno;
  35         int     si_code;
  36
  37         union {
  38                 int _pad[((128/sizeof(int)) - 3)];
  39
  40                 /* kill() */
  41                 struct {
  42                         pid_t   _pid;   /* sender's pid */
  43                         uid_t   _uid;   /* sender's uid */
  44                 } _kill;
  45
  46                 /* POSIX.1b timers */
  47                 struct {
  48                         timer_t _tid;           /* timer id */
  49                         int _overrun;           /* overrun count */
  50                         compat_sigval_t _sigval;        /* same as below */
  51                         int _sys_private;       /* not to be passed to user */
  52                 } _timer;
  53
  54                 /* POSIX.1b signals */
  55                 struct {
  56                         pid_t                   _pid;   /* sender's pid */
  57                         uid_t                   _uid;   /* sender's uid */
  58                         compat_sigval_t         _sigval;
  59                 } _rt;
  60
  61                 /* SIGCHLD */
  62                 struct {
  63                         pid_t                   _pid;   /* which child */
  64                         uid_t                   _uid;   /* sender's uid */
  65                         int                     _status;/* exit code */
  66                         compat_clock_t          _utime;
  67                         compat_clock_t          _stime;
  68                 } _sigchld;
  69
  70                 /* SIGILL, SIGFPE, SIGSEGV, SIGBUS */
  71                 struct {
  72                         __u32   _addr;  /* faulting insn/memory ref. - pointer */
  73                 } _sigfault;
  74
  75                 /* SIGPOLL */
  76                 struct {
  77                         int     _band;  /* POLL_IN, POLL_OUT, POLL_MSG */
  78                         int     _fd;
  79                 } _sigpoll;
  80         } _sifields;
  81 } compat_siginfo_t;
  82
  83 /*
  84  * How these fields are to be accessed.
  85  */
  86 #define si_pid          _sifields._kill._pid
  87 #define si_uid          _sifields._kill._uid
  88 #define si_status       _sifields._sigchld._status
  89 #define si_utime        _sifields._sigchld._utime
  90 #define si_stime        _sifields._sigchld._stime
  91 #define si_value        _sifields._rt._sigval
  92 #define si_int          _sifields._rt._sigval.sival_int
  93 #define si_ptr          _sifields._rt._sigval.sival_ptr
  94 #define si_addr         _sifields._sigfault._addr
  95 #define si_band         _sifields._sigpoll._band
  96 #define si_fd           _sifields._sigpoll._fd
  97 #define si_tid          _sifields._timer._tid
  98 #define si_overrun      _sifields._timer._overrun
  99
 100 /* asm/sigcontext.h */
 101 typedef union
 102 {
 103         __u64   d;
 104         __u32   f;
 105 } freg_t32;
 106
 107 typedef struct
 108 {
 109         unsigned int    fpc;
 110         freg_t32        fprs[__NUM_FPRS];
 111 } _s390_fp_regs32;
 112
 113 typedef struct
 114 {
 115         __u32   mask;
 116         __u32   addr;
 117 } _psw_t32 __attribute__ ((aligned(8)));
 118
 119 #define PSW32_MASK_PER          0x40000000UL
 120 #define PSW32_MASK_DAT          0x04000000UL
 121 #define PSW32_MASK_IO           0x02000000UL
 122 #define PSW32_MASK_EXT          0x01000000UL
 123 #define PSW32_MASK_KEY          0x00F00000UL
 124 #define PSW32_MASK_MCHECK       0x00040000UL
 125 #define PSW32_MASK_WAIT         0x00020000UL
 126 #define PSW32_MASK_PSTATE       0x00010000UL
 127 #define PSW32_MASK_ASC          0x0000C000UL
 128 #define PSW32_MASK_CC           0x00003000UL
 129 #define PSW32_MASK_PM           0x00000f00UL
 130
 131 #define PSW32_ADDR_AMODE31      0x80000000UL
 132 #define PSW32_ADDR_INSN         0x7FFFFFFFUL
 133
 134 #define PSW32_BASE_BITS         0x00080000UL
 135
 136 #define PSW32_ASC_PRIMARY       0x00000000UL
 137 #define PSW32_ASC_ACCREG        0x00004000UL
 138 #define PSW32_ASC_SECONDARY     0x00008000UL
 139 #define PSW32_ASC_HOME          0x0000C000UL
 140
 141 #define PSW32_USER_BITS (PSW32_BASE_BITS | PSW32_MASK_DAT | PSW32_ASC_HOME | \
 142                          PSW32_MASK_IO | PSW32_MASK_EXT | PSW32_MASK_MCHECK | \
 143                          PSW32_MASK_PSTATE)
 144
 145 #define PSW32_MASK_MERGE(CURRENT,NEW) \
 146         (((CURRENT) & ~(PSW32_MASK_CC|PSW32_MASK_PM)) | \
 147          ((NEW) & (PSW32_MASK_CC|PSW32_MASK_PM)))
 148
 149
 150 typedef struct
 151 {
 152         _psw_t32        psw;
 153         __u32           gprs[__NUM_GPRS];
 154         __u32           acrs[__NUM_ACRS];
 155 } _s390_regs_common32;
 156
 157 typedef struct
 158 {
 159         _s390_regs_common32 regs;
 160         _s390_fp_regs32     fpregs;
 161 } _sigregs32;
 162
 163 #define _SIGCONTEXT_NSIG32      64
 164 #define _SIGCONTEXT_NSIG_BPW32  32
 165 #define __SIGNAL_FRAMESIZE32    96
 166 #define _SIGMASK_COPY_SIZE32    (sizeof(u32)*2)
 167
 168 struct sigcontext32
 169 {
 170         __u32   oldmask[_COMPAT_NSIG_WORDS];
 171         __u32   sregs;                          /* pointer */
 172 };
 173
 174 /* asm/signal.h */
 175 struct sigaction32 {
 176         __u32           sa_handler;             /* pointer */
 177         __u32           sa_flags;
 178         __u32           sa_restorer;            /* pointer */
 179         compat_sigset_t sa_mask;        /* mask last for extensibility */
 180 };
 181
 182 typedef struct {
 183         __u32                   ss_sp;          /* pointer */
 184         int                     ss_flags;
 185         compat_size_t           ss_size;
 186 } stack_t32;
 187
 188 /* asm/ucontext.h */
 189 struct ucontext32 {
 190         __u32                   uc_flags;
 191         __u32                   uc_link;        /* pointer */
 192         stack_t32               uc_stack;
 193         _sigregs32              uc_mcontext;
 194         compat_sigset_t         uc_sigmask;     /* mask last for extensibility */
 195 };
 196
 197 #endif /* _ASM_S390X_S390_H */