1 /*- 2 * Copyright (c) 1982, 1986 The Regents of the University of California. 3 * All rights reserved. 4 * 5 * %sccs.include.proprietary.c% 6 * 7 * @(#)psl.h 7.3 (Berkeley) 05/08/91 8 */ 9 10 /* 11 * VAX program status longword 12 */ 13 14 #define PSL_C 0x00000001 /* carry bit */ 15 #define PSL_V 0x00000002 /* overflow bit */ 16 #define PSL_Z 0x00000004 /* zero bit */ 17 #define PSL_N 0x00000008 /* negative bit */ 18 #define PSL_ALLCC 0x0000000f /* all cc bits - unlikely */ 19 #define PSL_T 0x00000010 /* trace enable bit */ 20 #define PSL_IV 0x00000020 /* integer overflow enable bit */ 21 #define PSL_FU 0x00000040 /* floating point underflow enable */ 22 #define PSL_DV 0x00000080 /* decimal overflow enable bit */ 23 #define PSL_IPL 0x001f0000 /* interrupt priority level */ 24 #define PSL_PRVMOD 0x00c00000 /* previous mode (all on is user) */ 25 #define PSL_CURMOD 0x03000000 /* current mode (all on is user) */ 26 #define PSL_IS 0x04000000 /* interrupt stack */ 27 #define PSL_FPD 0x08000000 /* first part done */ 28 #define PSL_TP 0x40000000 /* trace pending */ 29 #define PSL_CM 0x80000000 /* compatibility mode */ 30 31 #define PSL_MBZ 0x3020ff00 /* must be zero bits */ 32 33 #define PSL_USERSET (PSL_PRVMOD|PSL_CURMOD) 34 #define PSL_USERCLR (PSL_IS|PSL_IPL|PSL_MBZ) 35 #define PSL_CM_CLR (PSL_FPD|PSL_DV|PSL_FU|PSL_IV) 36