sys/include/except.h

   1 /*-
   2  * Copyright (c) 2005, Kohsuke Ohtani
   3  * All rights reserved.
   4  *
   5  * Redistribution and use in source and binary forms, with or without
   6  * modification, are permitted provided that the following conditions
   7  * are met:
   8  * 1. Redistributions of source code must retain the above copyright
   9  *    notice, this list of conditions and the following disclaimer.
  10  * 2. Redistributions in binary form must reproduce the above copyright
  11  *    notice, this list of conditions and the following disclaimer in the
  12  *    documentation and/or other materials provided with the distribution.
  13  * 3. Neither the name of the author nor the names of any co-contributors
  14  *    may be used to endorse or promote products derived from this software
  15  *    without specific prior written permission.
  16  *
  17  * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
  18  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
  19  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
  20  * ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
  21  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
  22  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
  23  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
  24  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
  25  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
  26  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
  27  * SUCH DAMAGE.
  28  */
  29
  30 #ifndef _EXCEPT_H
  31 #define _EXCEPT_H
  32
  33 #include <task.h>
  34
  35 /*
  36  * You can not change the following exception count because we are
  37  * using 32bit bitmap to handle the exception (and signal) mask.
  38  */
  39 #define NR_EXCEPTIONS   32      /* Number of exceptions */
  40
  41 /*
  42  * Exception from kernel
  43  */
  44 #define EXC_ILL         4       /* Illegal instruction (SIGILL) */
  45 #define EXC_TRAP        5       /* Break point (SIGTRAP) */
  46 #define EXC_FPE         8       /* Math error (SIGFPE) */
  47 #define EXC_SEGV        11      /* Invalid memory access (SIGSEGV) */
  48 #define EXC_ALRM        14      /* Alarm clock (SIGALRM) */
  49
  50 extern int exception_setup(void (*handler)(int, u_long));
  51 extern int exception_return(void *regs);
  52 extern int exception_raise(task_t task, int exc);
  53 extern int exception_wait(int *exc);
  54 extern void exception_deliver(void);
  55 extern void exception_post(int exc);
  56
  57 extern int __exception_raise(task_t task, int exc);
  58
  59 #endif /* !_EXCEPT_H */