psl.h revision 138220 
1/*
2 * Copyright (C) 1995, 1996 Wolfgang Solfrank.
3 * Copyright (C) 1995, 1996 TooLs GmbH.
4 * All rights reserved.
5 *
6 * Redistribution and use in source and binary forms, with or without
7 * modification, are permitted provided that the following conditions
8 * are met:
9 * 1. Redistributions of source code must retain the above copyright
10 *    notice, this list of conditions and the following disclaimer.
11 * 2. Redistributions in binary form must reproduce the above copyright
12 *    notice, this list of conditions and the following disclaimer in the
13 *    documentation and/or other materials provided with the distribution.
14 * 3. All advertising materials mentioning features or use of this software
15 *    must display the following acknowledgement:
16 *	This product includes software developed by TooLs GmbH.
17 * 4. The name of TooLs GmbH may not be used to endorse or promote products
18 *    derived from this software without specific prior written permission.
19 *
20 * THIS SOFTWARE IS PROVIDED BY TOOLS GMBH ``AS IS'' AND ANY EXPRESS OR
21 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
22 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
23 * IN NO EVENT SHALL TOOLS GMBH BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
24 * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
25 * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS;
26 * OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
27 * WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR
28 * OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF
29 * ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
30 *
31 *	$NetBSD: psl.h,v 1.5 2000/11/19 19:52:37 matt Exp $
32 * $FreeBSD: head/sys/powerpc/include/psl.h 138220 2004-11-30 09:04:41Z grehan $
33 */
34
35#ifndef	_MACHINE_PSL_H_
36#define	_MACHINE_PSL_H_
37
38/*
39 * Machine State Register (MSR)
40 *
41 * The PowerPC 601 does not implement the following bits:
42 *
43 *	VEC, POW, ILE, BE, RI, LE[*]
44 *
45 * [*] Little-endian mode on the 601 is implemented in the HID0 register.
46 */
47#define	PSL_VEC		0x02000000	/* AltiVec vector unit available */
48#define	PSL_POW		0x00040000	/* power management */
49#define	PSL_ILE		0x00010000	/* interrupt endian mode (1 == le) */
50#define	PSL_EE		0x00008000	/* external interrupt enable */
51#define	PSL_PR		0x00004000	/* privilege mode (1 == user) */
52#define	PSL_FP		0x00002000	/* floating point enable */
53#define	PSL_ME		0x00001000	/* machine check enable */
54#define	PSL_FE0		0x00000800	/* floating point interrupt mode 0 */
55#define	PSL_SE		0x00000400	/* single-step trace enable */
56#define	PSL_BE		0x00000200	/* branch trace enable */
57#define	PSL_FE1		0x00000100	/* floating point interrupt mode 1 */
58#define	PSL_IP		0x00000040	/* interrupt prefix */
59#define	PSL_IR		0x00000020	/* instruction address relocation */
60#define	PSL_DR		0x00000010	/* data address relocation */
61#define	PSL_RI		0x00000002	/* recoverable interrupt */
62#define	PSL_LE		0x00000001	/* endian mode (1 == le) */
63
64#define	PSL_601_MASK	~(PSL_POW|PSL_ILE|PSL_BE|PSL_RI|PSL_LE)
65
66/*
67 * Floating-point exception modes:
68 */
69#define	PSL_FE_DIS	0		/* none */
70#define	PSL_FE_NONREC	PSL_FE1		/* imprecise non-recoverable */
71#define	PSL_FE_REC	PSL_FE0		/* imprecise recoverable */
72#define	PSL_FE_PREC	(PSL_FE0 | PSL_FE1) /* precise */
73#define	PSL_FE_DFLT	PSL_FE_DIS	/* default == none */
74
75/*
76 * Note that PSL_POW and PSL_ILE are not in the saved copy of the MSR
77 */
78#define	PSL_MBO		0
79#define	PSL_MBZ		0
80
81#define	PSL_KERNSET	(PSL_EE | PSL_ME | PSL_IR | PSL_DR | PSL_RI)
82#define	PSL_USERSET	(PSL_KERNSET | PSL_PR)
83
84#define	PSL_USERSTATIC	(PSL_USERSET | PSL_IP | 0x87c0008c)
85
86#endif	/* _MACHINE_PSL_H_ */
87