4.4BSD/usr/src/sys/vax/include/trap.h
/*-
* Copyright (c) 1982, 1986 The Regents of the University of California.
* All rights reserved.
*
* This module is believed to contain source code proprietary to AT&T.
* Use and redistribution is subject to the Berkeley Software License
* Agreement and your Software Agreement with AT&T (Western Electric).
*
* @(#)trap.h 7.4 (Berkeley) 5/8/91
*/
/*
* Trap type values
* also known in trap.c for name strings
*/
#define T_RESADFLT 0 /* reserved addressing fault */
#define T_PRIVINFLT 1 /* privileged instruction fault */
#define T_RESOPFLT 2 /* reserved operand fault */
/* definitions for <sys/signal.h> */
#define ILL_RESAD_FAULT T_RESADFLT
#define ILL_PRIVIN_FAULT T_PRIVINFLT
#define ILL_RESOP_FAULT T_RESOPFLT
/* CHME, CHMS, CHMU are not yet given back to users reasonably */
#define T_BPTFLT 3 /* bpt instruction fault */
#define T_XFCFLT 4 /* xfc instruction fault */
#define T_SYSCALL 5 /* chmk instruction (syscall trap) */
#define T_ARITHTRAP 6 /* arithmetic trap */
#define T_ASTFLT 7 /* software level 2 trap (ast deliv) */
#define T_SEGFLT 8 /* segmentation fault */
#define T_PROTFLT 9 /* protection fault */
#define T_TRCTRAP 10 /* trace trap */
#define T_COMPATFLT 11 /* compatibility mode fault */
#define T_PAGEFLT 12 /* page fault */
#define T_TABLEFLT 13 /* page table fault */
#define T_KDBTRAP 14 /* kernel debugger trap */
/* codes for SIGFPE/ARITHTRAP */
#define FPE_INTOVF_TRAP 0x1 /* integer overflow */
#define FPE_INTDIV_TRAP 0x2 /* integer divide by zero */
#define FPE_FLTOVF_TRAP 0x3 /* floating overflow */
#define FPE_FLTDIV_TRAP 0x4 /* floating/decimal divide by zero */
#define FPE_FLTUND_TRAP 0x5 /* floating underflow */
#define FPE_DECOVF_TRAP 0x6 /* decimal overflow */
#define FPE_SUBRNG_TRAP 0x7 /* subscript out of range */
#define FPE_FLTOVF_FAULT 0x8 /* floating overflow fault */
#define FPE_FLTDIV_FAULT 0x9 /* divide by zero floating fault */
#define FPE_FLTUND_FAULT 0xa /* floating underflow fault */