include/asm-mips/siginfo.h

   1 /* $Id: siginfo.h,v 1.5 1999/08/18 23:37:49 ralf Exp $
   2  *
   3  * This file is subject to the terms and conditions of the GNU General Public
   4  * License.  See the file "COPYING" in the main directory of this archive
   5  * for more details.
   6  *
   7  * Copyright (C) 1998, 1999 by Ralf Baechle
   8  */
   9 #ifndef _ASM_SIGINFO_H
  10 #define _ASM_SIGINFO_H
  11
  12 #include <linux/types.h>
  13
  14 /* This structure matches IRIX 32/n32 ABIs for binary compatibility. */
  15
  16 typedef union sigval {
  17         int sival_int;
  18         void *sival_ptr;
  19 } sigval_t;
  20
  21 /* This structure matches IRIX 32/n32 ABIs for binary compatibility but
  22    has Linux extensions.  */
  23
  24 #define SI_MAX_SIZE     128
  25 #define SI_PAD_SIZE     ((SI_MAX_SIZE/sizeof(int)) - 3)
  26
  27 typedef struct siginfo {
  28         int si_signo;
  29         int si_code;
  30         int si_errno;
  31
  32         union {
  33                 int _pad[SI_PAD_SIZE];
  34
  35                 /* kill() */
  36                 struct {
  37                         pid_t _pid;             /* sender's pid */
  38                         uid_t _uid;             /* sender's uid */
  39                 } _kill;
  40
  41                 /* SIGCHLD */
  42                 struct {
  43                         pid_t _pid;             /* which child */
  44                         uid_t _uid;             /* sender's uid */
  45                         clock_t _utime;
  46                         int _status;            /* exit code */
  47                         clock_t _stime;
  48                 } _sigchld;
  49
  50                 /* IRIX SIGCHLD */
  51                 struct {
  52                         pid_t _pid;             /* which child */
  53                         clock_t _utime;
  54                         int _status;            /* exit code */
  55                         clock_t _stime;
  56                 } _irix_sigchld;
  57
  58                 /* SIGILL, SIGFPE, SIGSEGV, SIGBUS */
  59                 struct {
  60                         void *_addr; /* faulting insn/memory ref. */
  61                 } _sigfault;
  62
  63                 /* SIGPOLL, SIGXFSZ (To do ...)  */
  64                 struct {
  65                         int _band;      /* POLL_IN, POLL_OUT, POLL_MSG */
  66                         int _fd;
  67                 } _sigpoll;
  68
  69                 /* POSIX.1b timers */
  70                 struct {
  71                         unsigned int _timer1;
  72                         unsigned int _timer2;
  73                 } _timer;
  74
  75                 /* POSIX.1b signals */
  76                 struct {
  77                         pid_t _pid;             /* sender's pid */
  78                         uid_t _uid;             /* sender's uid */
  79                         sigval_t _sigval;
  80                 } _rt;
  81
  82         } _sifields;
  83 } siginfo_t;
  84
  85 /*
  86  * How these fields are to be accessed.
  87  */
  88 #define si_pid          _sifields._kill._pid
  89 #define si_uid          _sifields._kill._uid
  90 #define si_status       _sifields._sigchld._status
  91 #define si_utime        _sifields._sigchld._utime
  92 #define si_stime        _sifields._sigchld._stime
  93 #define si_value        _sifields._rt._sigval
  94 #define si_int          _sifields._rt._sigval.sival_int
  95 #define si_ptr          _sifields._rt._sigval.sival_ptr
  96 #define si_addr         _sifields._sigfault._addr
  97 #define si_band         _sifields._sigpoll._band
  98 #define si_fd           _sifields._sigpoll._fd
  99
 100 #ifdef __KERNEL__
 101 #define __SI_MASK       0xffff0000
 102 #define __SI_KILL       (0 << 16)
 103 #define __SI_TIMER      (1 << 16)
 104 #define __SI_POLL       (2 << 16)
 105 #define __SI_FAULT      (3 << 16)
 106 #define __SI_CHLD       (4 << 16)
 107 #define __SI_RT         (5 << 16)
 108 #define __SI_CODE(T,N)  ((T) << 16 | ((N) & 0xffff))
 109 #else
 110 #define __SI_KILL       0
 111 #define __SI_TIMER      0
 112 #define __SI_POLL       0
 113 #define __SI_FAULT      0
 114 #define __SI_CHLD       0
 115 #define __SI_RT         0
 116 #define __SI_CODE(T,N)  (N)
 117 #endif
 118
 119 /*
 120  * si_code values
 121  * Again these have been choosen to be IRIX compatible.
 122  */
 123 #define SI_USER         0       /* sent by kill, sigsend, raise */
 124 #define SI_KERNEL       0x80    /* sent by the kernel from somewhere */
 125 #define SI_QUEUE        -1      /* sent by sigqueue */
 126 #define SI_ASYNCIO      -2      /* sent by AIO completion */
 127 #define SI_TIMER __SI_CODE(__SI_TIMER,-3) /* sent by timer expiration */
 128 #define SI_MESGQ        -4      /* sent by real time mesq state change */
 129 #define SI_SIGIO        -5      /* sent by queued SIGIO */
 130
 131 #define SI_FROMUSER(siptr)      ((siptr)->si_code <= 0)
 132 #define SI_FROMKERNEL(siptr)    ((siptr)->si_code > 0)
 133
 134 /*
 135  * SIGILL si_codes
 136  */
 137 #define ILL_ILLOPC      (__SI_FAULT|1)  /* illegal opcode */
 138 #define ILL_ILLOPN      (__SI_FAULT|2)  /* illegal operand */
 139 #define ILL_ILLADR      (__SI_FAULT|3)  /* illegal addressing mode */
 140 #define ILL_ILLTRP      (__SI_FAULT|4)  /* illegal trap */
 141 #define ILL_PRVOPC      (__SI_FAULT|5)  /* privileged opcode */
 142 #define ILL_PRVREG      (__SI_FAULT|6)  /* privileged register */
 143 #define ILL_COPROC      (__SI_FAULT|7)  /* coprocessor error */
 144 #define ILL_BADSTK      (__SI_FAULT|8)  /* internal stack error */
 145 #define NSIGILL         8
 146
 147 /*
 148  * SIGFPE si_codes
 149  */
 150 #define FPE_INTDIV      (__SI_FAULT|1)  /* integer divide by zero */
 151 #define FPE_INTOVF      (__SI_FAULT|2)  /* integer overflow */
 152 #define FPE_FLTDIV      (__SI_FAULT|3)  /* floating point divide by zero */
 153 #define FPE_FLTOVF      (__SI_FAULT|4)  /* floating point overflow */
 154 #define FPE_FLTUND      (__SI_FAULT|5)  /* floating point underflow */
 155 #define FPE_FLTRES      (__SI_FAULT|6)  /* floating point inexact result */
 156 #define FPE_FLTINV      (__SI_FAULT|7)  /* floating point invalid operation */
 157 #define FPE_FLTSUB      (__SI_FAULT|8)  /* subscript out of range */
 158 #define NSIGFPE         8
 159
 160 /*
 161  * SIGSEGV si_codes
 162  */
 163 #define SEGV_MAPERR     (__SI_FAULT|1)  /* address not mapped to object */
 164 #define SEGV_ACCERR     (__SI_FAULT|2)  /* invalid permissions for mapped object */
 165 #define NSIGSEGV        2
 166
 167 /*
 168  * SIGBUS si_codes
 169  */
 170 #define BUS_ADRALN      (__SI_FAULT|1)  /* invalid address alignment */
 171 #define BUS_ADRERR      (__SI_FAULT|2)  /* non-existant physical address */
 172 #define BUS_OBJERR      (__SI_FAULT|3)  /* object specific hardware error */
 173 #define NSIGBUS         3
 174
 175 /*
 176  * SIGTRAP si_codes
 177  */
 178 #define TRAP_BRKPT      (__SI_FAULT|1)  /* process breakpoint */
 179 #define TRAP_TRACE      (__SI_FAULT|2)  /* process trace trap */
 180 #define NSIGTRAP        2
 181
 182 /*
 183  * SIGCHLD si_codes
 184  */
 185 #define CLD_EXITED      (__SI_CHLD|1)   /* child has exited */
 186 #define CLD_KILLED      (__SI_CHLD|2)   /* child was killed */
 187 #define CLD_DUMPED      (__SI_CHLD|3)   /* child terminated abnormally */
 188 #define CLD_TRAPPED     (__SI_CHLD|4)   /* traced child has trapped */
 189 #define CLD_STOPPED     (__SI_CHLD|5)   /* child has stopped */
 190 #define CLD_CONTINUED   (__SI_CHLD|6)   /* stopped child has continued */
 191 #define NSIGCHLD        6
 192
 193 /*
 194  * SIGPOLL si_codes
 195  */
 196 #define POLL_IN         (__SI_POLL|1)   /* data input available */
 197 #define POLL_OUT        (__SI_POLL|2)   /* output buffers available */
 198 #define POLL_MSG        (__SI_POLL|3)   /* input message available */
 199 #define POLL_ERR        (__SI_POLL|4)   /* i/o error */
 200 #define POLL_PRI        (__SI_POLL|5)   /* high priority input available */
 201 #define POLL_HUP        (__SI_POLL|6)   /* device disconnected */
 202 #define NSIGPOLL        6
 203
 204 /*
 205  * sigevent definitions
 206  *
 207  * It seems likely that SIGEV_THREAD will have to be handled from
 208  * userspace, libpthread transmuting it to SIGEV_SIGNAL, which the
 209  * thread manager then catches and does the appropriate nonsense.
 210  * However, everything is written out here so as to not get lost.
 211  */
 212 #define SIGEV_NONE      128     /* other notification: meaningless */
 213 #define SIGEV_SIGNAL    129     /* notify via signal */
 214 #define SIGEV_CALLBACK  130     /* ??? */
 215 #define SIGEV_THREAD    131     /* deliver via thread creation */
 216
 217 #define SIGEV_MAX_SIZE  64
 218 #define SIGEV_PAD_SIZE  ((SIGEV_MAX_SIZE/sizeof(int)) - 4)
 219
 220 /* XXX This one isn't yet IRIX / ABI compatible.  */
 221 typedef struct sigevent {
 222         int sigev_notify;
 223         sigval_t sigev_value;
 224         int sigev_signo;
 225         union {
 226                 int _pad[SIGEV_PAD_SIZE];
 227
 228                 struct {
 229                         void (*_function)(sigval_t);
 230                         void *_attribute;       /* really pthread_attr_t */
 231                 } _sigev_thread;
 232         } _sigev_un;
 233 } sigevent_t;
 234
 235 #define sigev_notify_function   _sigev_un._sigev_thread._function
 236 #define sigev_notify_attributes _sigev_un._sigev_thread._attribute
 237
 238 #ifdef __KERNEL__
 239 #include <linux/string.h>
 240
 241 extern inline void copy_siginfo(siginfo_t *to, siginfo_t *from)
 242 {
 243         if (from->si_code < 0)
 244                 memcpy(to, from, sizeof(siginfo_t));
 245         else
 246                 /* _sigchld is currently the largest know union member */
 247                 memcpy(to, from, 3*sizeof(int) + sizeof(from->_sifields._sigchld));
 248 }
 249
 250 extern int copy_siginfo_to_user(siginfo_t *to, siginfo_t *from);
 251
 252 #endif /* __KERNEL__ */
 253
 254 #endif /* _ASM_SIGINFO_H */