usr/src/sys/tahoe/include/trap.h

/*      trap.h  1.2     86/11/25        */

/*      first 3 constants known in system C files - don't change */
#define T_RESADFLT      0       /* reserved addressing */
#define T_PRIVINFLT     1       /* privileged instruction */
#define T_RESOPFLT      2       /* reserved operand */
/*      those constants shouldn't change        */
#define T_BPTFLT        3       /* breakpoint instruction */
#define T_SYSCALL       5       /* system call (kcall) */
#define T_ARITHTRAP     6       /* arithmetic trap */
#define T_ASTFLT        7       /* system forced exception */
#define T_SEGFLT        8       /* segmentation (limit) fault */
#define T_PROTFLT       9       /* protection fault */
#define T_TRCTRAP       10      /* trace trap */
#define T_PAGEFLT       12      /* page fault */
#define T_TABLEFLT      13      /* page table fault */
#define T_ALIGNFLT      14      /* alignment fault */
#define T_KSPNOTVAL     15      /* kernel stack pointer not valid */
#define T_BUSERR        16      /* bus error */
#define T_KDBTRAP       17      /* kernel debugger trap */