1/* $NetBSD: psl.h,v 1.19 2016/07/30 06:27:45 matt Exp $ */
2
3/*
4 * Copyright (c) 1992, 1993
5 * The Regents of the University of California. All rights reserved.
6 *
7 * This code is derived from software contributed to Berkeley by
8 * Ralph Campbell.
9 *
10 * Redistribution and use in source and binary forms, with or without
11 * modification, are permitted provided that the following conditions
12 * are met:
13 * 1. Redistributions of source code must retain the above copyright
14 * notice, this list of conditions and the following disclaimer.
15 * 2. Redistributions in binary form must reproduce the above copyright
16 * notice, this list of conditions and the following disclaimer in the
17 * documentation and/or other materials provided with the distribution.
18 * 3. Neither the name of the University nor the names of its contributors
19 * may be used to endorse or promote products derived from this software
20 * without specific prior written permission.
21 *
22 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
23 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
24 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
25 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
26 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
27 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
28 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
29 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
30 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
31 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
32 * SUCH DAMAGE.
33 *
34 * @(#)psl.h 8.1 (Berkeley) 6/10/93
35 */
36
37/*
38 * Define PSL_LOWIPL, PSL_USERSET, USERMODE for MI code, for
39 * MIPS1, MIPS3+, or both, depending on the configured CPU types.
40 */
41
42#include <machine/cdefs.h> /* for API selection */
43#include <mips/cpuregs.h>
44
45/*
46 * mips3 (or greater)-specific definitions
47 */
48#define MIPS3_PSL_LOWIPL (MIPS3_INT_MASK | MIPS_SR_INT_IE)
49
50#if !defined(__mips_o32)
51# define MIPS3_PSL_XFLAGS (MIPS3_SR_XX | MIPS_SR_KX)
52#else
53# define MIPS3_PSL_XFLAGS (0)
54#endif
55
56#define MIPS3_PSL_USERSET \
57 (MIPS3_SR_KSU_USER | \
58 MIPS3_PSL_XFLAGS | \
59 MIPS_SR_INT_IE | \
60 MIPS3_SR_EXL | \
61 MIPS3_INT_MASK)
62
63#define MIPS3_USERMODE(ps) \
64 (((ps) & MIPS3_SR_KSU_MASK) == MIPS3_SR_KSU_USER)
65
66/*
67 * mips1-specific definitions
68 */
69#define MIPS1_PSL_LOWIPL (MIPS_INT_MASK | MIPS_SR_INT_IE)
70
71#define MIPS1_PSL_USERSET \
72 (MIPS1_SR_KU_OLD | \
73 MIPS1_SR_INT_ENA_OLD | \
74 MIPS1_SR_KU_PREV | \
75 MIPS1_SR_INT_ENA_PREV |\
76 MIPS_INT_MASK)
77
78#define MIPS1_USERMODE(ps) \
79 ((ps) & MIPS1_SR_KU_PREV)
80
81/*
82 * Choose mips3-only, mips1-only, or runtime-selected values.
83 */
84
85#if defined(MIPS3_PLUS) && !defined(MIPS1) /* mips3 or greater only */
86# define PSL_LOWIPL MIPS3_PSL_LOWIPL
87# define PSL_USERSET MIPS3_PSL_USERSET
88# define USERMODE(ps) MIPS3_USERMODE(ps)
89#endif /* mips3 only */
90
91
92#if !defined(MIPS3_PLUS) && defined(MIPS1) /* mips1 only */
93# define PSL_LOWIPL MIPS1_PSL_LOWIPL
94# define PSL_USERSET MIPS1_PSL_USERSET
95# define USERMODE(ps) MIPS1_USERMODE(ps)
96#endif /* mips1 only */
97
98
99#if MIPS3_PLUS + MIPS1 > 1
100# define PSL_LOWIPL (CPUISMIPS3 ? MIPS3_PSL_LOWIPL : MIPS1_PSL_LOWIPL)
101# define PSL_USERSET (CPUISMIPS3 ? MIPS3_PSL_USERSET : MIPS1_PSL_USERSET)
102# define USERMODE(ps) (CPUISMIPS3 ? MIPS3_USERMODE(ps) : MIPS1_USERMODE(ps))
103#endif