usr/src/slowsys/h/trap.h

/*
        Trap type values
 */

#define RESADFLT 0              /* reserved addressing fault */
#define PRIVINFLT 1             /* privileged instruction fault */
#define BPTFLT 2                /* bpt instruction fault */
#define XFCFLT 3                /* xfc instruction fault */
#define RESOPFLT 4              /* reserved operand fault */
#define SYSCALL 5               /* chmk instruction (syscall trap) */
#define ARITHTRAP 6             /* arithmetic trap */
#define RESCHED 7               /* software level 1 trap (reschedule trap) */
#define SEGFLT 8                /* segmentation fault */
#define PROTFLT 9               /* protection fault */
#define TRCTRAP 10              /* trace trap */