1 /* 2 * CDDL HEADER START 3 * 4 * The contents of this file are subject to the terms of the 5 * Common Development and Distribution License, Version 1.0 only 6 * (the "License"). You may not use this file except in compliance 7 * with the License. 8 * 9 * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE 10 * or http://www.opensolaris.org/os/licensing. 11 * See the License for the specific language governing permissions 12 * and limitations under the License. 13 * 14 * When distributing Covered Code, include this CDDL HEADER in each 15 * file and include the License file at usr/src/OPENSOLARIS.LICENSE. 16 * If applicable, add the following below this CDDL HEADER, with the 17 * fields enclosed by brackets "[]" replaced with your own identifying 18 * information: Portions Copyright [yyyy] [name of copyright owner] 19 * 20 * CDDL HEADER END 21 */ 22 /* 23 * Copyright 1986,2003 Sun Microsystems, Inc. All rights reserved. 24 * Use is subject to license terms. 25 */ 26 27 #ifndef _SYS_PSR_H 28 #define _SYS_PSR_H 29 30 #pragma ident "%Z%%M% %I% %E% SMI" /* from SunOS psl.h 1.2 */ 31 32 #ifdef __cplusplus 33 extern "C" { 34 #endif 35 36 /* 37 * Definition of bits in the SPARC PSR (Processor Status Register) 38 * ________________________________________________________________________ 39 * | IMPL | VER | ICC | resvd | EC | EF | PIL | S | PS | ET | CWP | 40 * | | | N | Z | V | C | | | | | | | | | 41 * |------|-----|---|---|---|---|-------|----|----|-----|---|----|----|-----| 42 * 31 28 27 24 23 22 21 20 19 14 13 12 11 8 7 6 5 4 0 43 * 44 * Reserved bits are defined to be initialized to zero and must 45 * be preserved if written, for compatabily with future revisions. 46 */ 47 48 #define PSR_CWP 0x0000001F /* current window pointer */ 49 #define PSR_ET 0x00000020 /* enable traps */ 50 #define PSR_PS 0x00000040 /* previous supervisor mode */ 51 #define PSR_S 0x00000080 /* supervisor mode */ 52 #define PSR_PIL 0x00000F00 /* processor interrupt level */ 53 #define PSR_EF 0x00001000 /* enable floating point unit */ 54 #define PSR_EC 0x00002000 /* enable coprocessor */ 55 #define PSR_RSV 0x000FC000 /* reserved */ 56 #define PSR_ICC 0x00F00000 /* integer condition codes */ 57 #define PSR_C 0x00100000 /* carry bit */ 58 #define PSR_V 0x00200000 /* overflow bit */ 59 #define PSR_Z 0x00400000 /* zero bit */ 60 #define PSR_N 0x00800000 /* negative bit */ 61 #define PSR_VER 0x0F000000 /* mask version */ 62 #define PSR_IMPL 0xF0000000 /* implementation */ 63 64 #define PSL_ALLCC PSR_ICC /* for portability */ 65 66 #ifndef _ASM 67 typedef int psw_t; 68 #endif 69 70 /* 71 * Handy psr values. 72 */ 73 #define PSL_USER (PSR_S) /* initial user psr */ 74 #define PSL_USERMASK (PSR_ICC) /* user variable psr bits */ 75 76 #define PSL_UBITS (PSR_ICC|PSR_EF) /* user modifiable fields */ 77 /* should set PSR_EC also */ 78 79 #ifdef __cplusplus 80 } 81 #endif 82 83 #endif /* _SYS_PSR_H */ 84