include/asm-ppc/siginfo.h

   1 #ifndef _PPC_SIGINFO_H
   2 #define _PPC_SIGINFO_H
   3
   4 /* Copied from i386 from alpha. */
   5
   6 typedef union sigval {
   7         int sival_int;
   8         void *sival_ptr;
   9 } sigval_t;
  10
  11 #define SI_MAX_SIZE     128
  12 #define SI_PAD_SIZE     ((SI_MAX_SIZE/sizeof(int)) - 3)
  13
  14 typedef struct siginfo {
  15         int si_signo;
  16         int si_errno;
  17         int si_code;
  18
  19         union {
  20                 int _pad[SI_PAD_SIZE];
  21
  22                 /* kill() */
  23                 struct {
  24                         pid_t _pid;             /* sender's pid */
  25                         uid_t _uid;             /* sender's uid */
  26                 } _kill;
  27
  28                 /* POSIX.1b timers */
  29                 struct {
  30                         unsigned int _timer1;
  31                         unsigned int _timer2;
  32                 } _timer;
  33
  34                 /* POSIX.1b signals */
  35                 struct {
  36                         pid_t _pid;             /* sender's pid */
  37                         uid_t _uid;             /* sender's uid */
  38                         sigval_t _sigval;
  39                 } _rt;
  40
  41                 /* SIGCHLD */
  42                 struct {
  43                         pid_t _pid;             /* which child */
  44                         uid_t _uid;             /* sender's uid */
  45                         int _status;            /* exit code */
  46                         clock_t _utime;
  47                         clock_t _stime;
  48                 } _sigchld;
  49
  50                 /* SIGILL, SIGFPE, SIGSEGV, SIGBUS */
  51                 struct {
  52                         void *_addr; /* faulting insn/memory ref. */
  53                 } _sigfault;
  54
  55                 /* SIGPOLL */
  56                 struct {
  57                         int _band;      /* POLL_IN, POLL_OUT, POLL_MSG */
  58                         int _fd;
  59                 } _sigpoll;
  60         } _sifields;
  61 } siginfo_t;
  62
  63 /*
  64  * How these fields are to be accessed.
  65  */
  66 #define si_pid          _sifields._kill._pid
  67 #define si_uid          _sifields._kill._uid
  68 #define si_status       _sifields._sigchld._status
  69 #define si_utime        _sifields._sigchld._utime
  70 #define si_stime        _sifields._sigchld._stime
  71 #define si_value        _sifields._rt._sigval
  72 #define si_int          _sifields._rt._sigval.sival_int
  73 #define si_ptr          _sifields._rt._sigval.sival_ptr
  74 #define si_addr         _sifields._sigfault._addr
  75 #define si_band         _sifields._sigpoll._band
  76 #define si_fd           _sifields._sigpoll._fd
  77
  78 #ifdef __KERNEL__
  79 #define __SI_MASK       0xffff0000
  80 #define __SI_KILL       (0 << 16)
  81 #define __SI_TIMER      (1 << 16)
  82 #define __SI_POLL       (2 << 16)
  83 #define __SI_FAULT      (3 << 16)
  84 #define __SI_CHLD       (4 << 16)
  85 #define __SI_RT         (5 << 16)
  86 #define __SI_CODE(T,N)  ((T) << 16 | ((N) & 0xffff))
  87 #else
  88 #define __SI_KILL       0
  89 #define __SI_TIMER      0
  90 #define __SI_POLL       0
  91 #define __SI_FAULT      0
  92 #define __SI_CHLD       0
  93 #define __SI_RT         0
  94 #define __SI_CODE(T,N)  (N)
  95 #endif
  96
  97 /*
  98  * si_code values
  99  * Digital reserves positive values for kernel-generated signals.
 100  */
 101 #define SI_USER         0               /* sent by kill, sigsend, raise */
 102 #define SI_KERNEL       0x80            /* sent by the kernel from somewhere */
 103 #define SI_QUEUE        -1              /* sent by sigqueue */
 104 #define SI_TIMER __SI_CODE(__SI_TIMER,-2) /* sent by timer expiration */
 105 #define SI_MESGQ        -3              /* sent by real time mesq state change */
 106 #define SI_ASYNCIO      -4              /* sent by AIO completion */
 107 #define SI_SIGIO        -5              /* sent by queued SIGIO */
 108
 109 #define SI_FROMUSER(siptr)      ((siptr)->si_code <= 0)
 110 #define SI_FROMKERNEL(siptr)    ((siptr)->si_code > 0)
 111
 112 /*
 113  * SIGILL si_codes
 114  */
 115 #define ILL_ILLOPC      (__SI_FAULT|1)  /* illegal opcode */
 116 #define ILL_ILLOPN      (__SI_FAULT|2)  /* illegal operand */
 117 #define ILL_ILLADR      (__SI_FAULT|3)  /* illegal addressing mode */
 118 #define ILL_ILLTRP      (__SI_FAULT|4)  /* illegal trap */
 119 #define ILL_PRVOPC      (__SI_FAULT|5)  /* privileged opcode */
 120 #define ILL_PRVREG      (__SI_FAULT|6)  /* privileged register */
 121 #define ILL_COPROC      (__SI_FAULT|7)  /* coprocessor error */
 122 #define ILL_BADSTK      (__SI_FAULT|8)  /* internal stack error */
 123 #define NSIGILL         8
 124
 125 /*
 126  * SIGFPE si_codes
 127  */
 128 #define FPE_INTDIV      (__SI_FAULT|1)  /* integer divide by zero */
 129 #define FPE_INTOVF      (__SI_FAULT|2)  /* integer overflow */
 130 #define FPE_FLTDIV      (__SI_FAULT|3)  /* floating point divide by zero */
 131 #define FPE_FLTOVF      (__SI_FAULT|4)  /* floating point overflow */
 132 #define FPE_FLTUND      (__SI_FAULT|5)  /* floating point underflow */
 133 #define FPE_FLTRES      (__SI_FAULT|6)  /* floating point inexact result */
 134 #define FPE_FLTINV      (__SI_FAULT|7)  /* floating point invalid operation */
 135 #define FPE_FLTSUB      (__SI_FAULT|8)  /* subscript out of range */
 136 #define NSIGFPE         8
 137
 138 /*
 139  * SIGSEGV si_codes
 140  */
 141 #define SEGV_MAPERR     (__SI_FAULT|1)  /* address not mapped to object */
 142 #define SEGV_ACCERR     (__SI_FAULT|2)  /* invalid permissions for mapped object */
 143 #define NSIGSEGV        2
 144
 145 /*
 146  * SIGBUS si_codes
 147  */
 148 #define BUS_ADRALN      (__SI_FAULT|1)  /* invalid address alignment */
 149 #define BUS_ADRERR      (__SI_FAULT|2)  /* non-existant physical address */
 150 #define BUS_OBJERR      (__SI_FAULT|3)  /* object specific hardware error */
 151 #define NSIGBUS         3
 152
 153 /*
 154  * SIGTRAP si_codes
 155  */
 156 #define TRAP_BRKPT      (__SI_FAULT|1)  /* process breakpoint */
 157 #define TRAP_TRACE      (__SI_FAULT|2)  /* process trace trap */
 158 #define NSIGTRAP        2
 159
 160 /*
 161  * SIGCHLD si_codes
 162  */
 163 #define CLD_EXITED      (__SI_CHLD|1)   /* child has exited */
 164 #define CLD_KILLED      (__SI_CHLD|2)   /* child was killed */
 165 #define CLD_DUMPED      (__SI_CHLD|3)   /* child terminated abnormally */
 166 #define CLD_TRAPPED     (__SI_CHLD|4)   /* traced child has trapped */
 167 #define CLD_STOPPED     (__SI_CHLD|5)   /* child has stopped */
 168 #define CLD_CONTINUED   (__SI_CHLD|6)   /* stopped child has continued */
 169 #define NSIGCHLD        6
 170
 171 /*
 172  * SIGPOLL si_codes
 173  */
 174 #define POLL_IN         (__SI_POLL|1)   /* data input available */
 175 #define POLL_OUT        (__SI_POLL|2)   /* output buffers available */
 176 #define POLL_MSG        (__SI_POLL|3)   /* input message available */
 177 #define POLL_ERR        (__SI_POLL|4)   /* i/o error */
 178 #define POLL_PRI        (__SI_POLL|5)   /* high priority input available */
 179 #define POLL_HUP        (__SI_POLL|6)   /* device disconnected */
 180 #define NSIGPOLL        6
 181
 182 /*
 183  * sigevent definitions
 184  *
 185  * It seems likely that SIGEV_THREAD will have to be handled from
 186  * userspace, libpthread transmuting it to SIGEV_SIGNAL, which the
 187  * thread manager then catches and does the appropriate nonsense.
 188  * However, everything is written out here so as to not get lost.
 189  */
 190 #define SIGEV_SIGNAL    0       /* notify via signal */
 191 #define SIGEV_NONE      1       /* other notification: meaningless */
 192 #define SIGEV_THREAD    2       /* deliver via thread creation */
 193
 194 #define SIGEV_MAX_SIZE  64
 195 #define SIGEV_PAD_SIZE  ((SIGEV_MAX_SIZE/sizeof(int)) - 3)
 196
 197 typedef struct sigevent {
 198         sigval_t sigev_value;
 199         int sigev_signo;
 200         int sigev_notify;
 201         union {
 202                 int _pad[SIGEV_PAD_SIZE];
 203
 204                 struct {
 205                         void (*_function)(sigval_t);
 206                         void *_attribute;       /* really pthread_attr_t */
 207                 } _sigev_thread;
 208         } _sigev_un;
 209 } sigevent_t;
 210
 211 #define sigev_notify_function   _sigev_un._sigev_thread._function
 212 #define sigev_notify_attributes _sigev_un._sigev_thread._attribute
 213
 214 #ifdef __KERNEL__
 215 #include <linux/string.h>
 216
 217 extern inline void copy_siginfo(siginfo_t *to, siginfo_t *from)
 218 {
 219         if (from->si_code < 0)
 220                 memcpy(to, from, sizeof(siginfo_t));
 221         else
 222                 /* _sigchld is currently the largest know union member */
 223                 memcpy(to, from, 3*sizeof(int) + sizeof(from->_sifields._sigchld));
 224 }
 225
 226 extern int copy_siginfo_to_user(siginfo_t *to, siginfo_t *from);
 227
 228 #endif /* __KERNEL__ */
 229
 230 #endif