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Chris Zankel173d6682006-12-10 02:18:48 -08001/*
2 * Copyright (c) 2006 Tensilica, Inc. All Rights Reserved.
3 *
4 * This program is free software; you can redistribute it and/or modify
5 * it under the terms of version 2.1 of the GNU Lesser General Public
6 * License as published by the Free Software Foundation.
7 *
8 * This program is distributed in the hope that it would be useful, but
9 * WITHOUT ANY WARRANTY; without even the implied warranty of
10 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
11 *
12 * Further, this software is distributed without any warranty that it is
13 * free of the rightful claim of any third person regarding infringement
14 * or the like. Any license provided herein, whether implied or
15 * otherwise, applies only to this software file. Patent licenses, if
16 * any, provided herein do not apply to combinations of this program with
17 * other software, or any other product whatsoever.
18 *
19 * You should have received a copy of the GNU Lesser General Public
20 * License along with this program; if not, write the Free Software
21 * Foundation, Inc., 59 Temple Place - Suite 330, Boston MA 02111-1307,
22 * USA.
23 */
24
25#ifndef _XTENSA_REGS_H
26#define _XTENSA_REGS_H
27
28/* Special registers. */
29
30#define LBEG 0
31#define LEND 1
32#define LCOUNT 2
33#define SAR 3
34#define BR 4
35#define SCOMPARE1 12
36#define ACCHI 16
37#define ACCLO 17
38#define MR 32
39#define WINDOWBASE 72
40#define WINDOWSTART 73
41#define PTEVADDR 83
42#define RASID 90
43#define ITLBCFG 91
44#define DTLBCFG 92
45#define IBREAKENABLE 96
46#define DDR 104
47#define IBREAKA 128
48#define DBREAKA 144
49#define DBREAKC 160
50#define EPC 176
51#define EPC_1 177
52#define DEPC 192
53#define EPS 192
54#define EPS_1 193
55#define EXCSAVE 208
56#define EXCSAVE_1 209
57#define INTERRUPT 226
58#define INTENABLE 228
59#define PS 230
60#define THREADPTR 231
61#define EXCCAUSE 232
62#define DEBUGCAUSE 233
63#define CCOUNT 234
64#define PRID 235
65#define ICOUNT 236
66#define ICOUNTLEVEL 237
67#define EXCVADDR 238
68#define CCOMPARE 240
69#define MISC 244
70
71/* Special names for read-only and write-only interrupt registers. */
72
73#define INTREAD 226
74#define INTSET 226
75#define INTCLEAR 227
76
77/* EXCCAUSE register fields */
78
79#define EXCCAUSE_EXCCAUSE_SHIFT 0
80#define EXCCAUSE_EXCCAUSE_MASK 0x3F
81
82#define EXCCAUSE_ILLEGAL_INSTRUCTION 0
83#define EXCCAUSE_SYSTEM_CALL 1
84#define EXCCAUSE_INSTRUCTION_FETCH_ERROR 2
85#define EXCCAUSE_LOAD_STORE_ERROR 3
86#define EXCCAUSE_LEVEL1_INTERRUPT 4
87#define EXCCAUSE_ALLOCA 5
88#define EXCCAUSE_INTEGER_DIVIDE_BY_ZERO 6
89#define EXCCAUSE_SPECULATION 7
90#define EXCCAUSE_PRIVILEGED 8
91#define EXCCAUSE_UNALIGNED 9
92#define EXCCAUSE_ITLB_MISS 16
93#define EXCCAUSE_ITLB_MULTIHIT 17
94#define EXCCAUSE_ITLB_PRIVILEGE 18
95#define EXCCAUSE_ITLB_SIZE_RESTRICTION 19
96#define EXCCAUSE_FETCH_CACHE_ATTRIBUTE 20
97#define EXCCAUSE_DTLB_MISS 24
98#define EXCCAUSE_DTLB_MULTIHIT 25
99#define EXCCAUSE_DTLB_PRIVILEGE 26
100#define EXCCAUSE_DTLB_SIZE_RESTRICTION 27
101#define EXCCAUSE_LOAD_CACHE_ATTRIBUTE 28
102#define EXCCAUSE_STORE_CACHE_ATTRIBUTE 29
103#define EXCCAUSE_FLOATING_POINT 40
104
105/* PS register fields. */
106
107#define PS_WOE_BIT 18
108#define PS_CALLINC_SHIFT 16
109#define PS_CALLINC_MASK 0x00030000
110#define PS_OWB_SHIFT 8
111#define PS_OWB_MASK 0x00000F00
112#define PS_RING_SHIFT 6
113#define PS_RING_MASK 0x000000C0
114#define PS_UM_BIT 5
115#define PS_EXCM_BIT 4
116#define PS_INTLEVEL_SHIFT 0
117#define PS_INTLEVEL_MASK 0x0000000F
118
119/* DBREAKCn register fields. */
120
121#define DBREAKC_MASK_BIT 0
122#define DBREAKC_MASK_MASK 0x0000003F
123#define DBREAKC_LOAD_BIT 30
124#define DBREAKC_LOAD_MASK 0x40000000
125#define DBREAKC_STOR_BIT 31
126#define DBREAKC_STOR_MASK 0x80000000
127
128/* DEBUGCAUSE register fields. */
129
130#define DEBUGCAUSE_DEBUGINT_BIT 5 /* External debug interrupt */
131#define DEBUGCAUSE_BREAKN_BIT 4 /* BREAK.N instruction */
132#define DEBUGCAUSE_BREAK_BIT 3 /* BREAK instruction */
133#define DEBUGCAUSE_DBREAK_BIT 2 /* DBREAK match */
134#define DEBUGCAUSE_IBREAK_BIT 1 /* IBREAK match */
135#define DEBUGCAUSE_ICOUNT_BIT 0 /* ICOUNT would incr. to zero */
136
137#endif /* _XTENSA_SPECREG_H */
138