usr/src/sys/h/psl.h

/*      psl.h   4.1     11/9/80 */

/*
 * VAX program status longword
 */

#define PSL_C           0x1             /* carry bit */
#define PSL_V           0x2             /* overflow bit */
#define PSL_Z           0x4             /* zero bit */
#define PSL_N           0x8             /* negative bit */
#define PSL_ALLCC       0xf             /* all cc bits - unlikely */
#define PSL_T           0x10            /* trace enable bit */
#define PSL_IV          0x20            /* integer overflow enable bit */
#define PSL_FU          0x40            /* floating point underflow enable */
#define PSL_DV          0x80            /* decimal overflow enable bit */
#define PSL_IPL         0x1f0000        /* interrupt priority level */
#define PSL_PRVMOD      0xc00000        /* previous mode (all on is user) */
#define PSL_CURMOD      0x3000000       /* current mode (all on is user) */
#define PSL_IS          0x4000000       /* interrupt stack */
#define PSL_FPD         0x8000000       /* first part done */
#define PSL_TP          0x40000000      /* trace pending */
#define PSL_CM          0x80000000      /* compatibility mode */
#define PSL_USERCLR     0x3c20ff00      /* bits must be clear in user mode */