arch/s390/kernel/compat_linux.h

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