types.hh revision 7105:bec31317707b 
1/*
2 * Copyright (c) 2010 ARM Limited
3 * All rights reserved
4 *
5 * The license below extends only to copyright in the software and shall
6 * not be construed as granting a license to any other intellectual
7 * property including but not limited to intellectual property relating
8 * to a hardware implementation of the functionality of the software
9 * licensed hereunder.  You may use the software subject to the license
10 * terms below provided that you ensure that this notice is replicated
11 * unmodified and in its entirety in all distributions of the software,
12 * modified or unmodified, in source code or in binary form.
13 *
14 * Copyright (c) 2007-2008 The Florida State University
15 * All rights reserved.
16 *
17 * Redistribution and use in source and binary forms, with or without
18 * modification, are permitted provided that the following conditions are
19 * met: redistributions of source code must retain the above copyright
20 * notice, this list of conditions and the following disclaimer;
21 * redistributions in binary form must reproduce the above copyright
22 * notice, this list of conditions and the following disclaimer in the
23 * documentation and/or other materials provided with the distribution;
24 * neither the name of the copyright holders nor the names of its
25 * contributors may be used to endorse or promote products derived from
26 * this software without specific prior written permission.
27 *
28 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
29 * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
30 * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
31 * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
32 * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
33 * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
34 * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
35 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
36 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
37 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
38 * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
39 *
40 * Authors: Stephen Hines
41 */
42
43#ifndef __ARCH_ARM_TYPES_HH__
44#define __ARCH_ARM_TYPES_HH__
45
46#include "base/bitunion.hh"
47#include "base/types.hh"
48
49namespace ArmISA
50{
51    typedef uint32_t MachInst;
52
53    BitUnion64(ExtMachInst)
54        // Bitfields to select mode.
55        Bitfield<36>     thumb;
56        Bitfield<35>     bigThumb;
57
58        // Made up bitfields that make life easier.
59        Bitfield<33>     sevenAndFour;
60        Bitfield<32>     isMisc;
61
62        uint32_t         instBits;
63
64        // All the different types of opcode fields.
65        Bitfield<27, 25> encoding;
66        Bitfield<25>     useImm;
67        Bitfield<24, 21> opcode;
68        Bitfield<24, 20> mediaOpcode;
69        Bitfield<24>     opcode24;
70        Bitfield<23, 20> opcode23_20;
71        Bitfield<23, 21> opcode23_21;
72        Bitfield<20>     opcode20;
73        Bitfield<22>     opcode22;
74        Bitfield<19, 16> opcode19_16;
75        Bitfield<19>     opcode19;
76        Bitfield<18>     opcode18;
77        Bitfield<15, 12> opcode15_12;
78        Bitfield<15>     opcode15;
79        Bitfield<7,  4>  miscOpcode;
80        Bitfield<7,5>    opc2;
81        Bitfield<7>      opcode7;
82        Bitfield<6>      opcode6;
83        Bitfield<4>      opcode4;
84
85        Bitfield<31, 28> condCode;
86        Bitfield<20>     sField;
87        Bitfield<19, 16> rn;
88        Bitfield<15, 12> rd;
89        Bitfield<11, 7>  shiftSize;
90        Bitfield<6,  5>  shift;
91        Bitfield<3,  0>  rm;
92
93        Bitfield<11, 8>  rs;
94
95        SubBitUnion(puswl, 24, 20)
96            Bitfield<24> prepost;
97            Bitfield<23> up;
98            Bitfield<22> psruser;
99            Bitfield<21> writeback;
100            Bitfield<20> loadOp;
101        EndSubBitUnion(puswl)
102
103        Bitfield<24, 20> pubwl;
104
105        Bitfield<7, 0> imm;
106
107        Bitfield<11, 8>  rotate;
108
109        Bitfield<11, 0>  immed11_0;
110        Bitfield<7,  0>  immed7_0;
111
112        Bitfield<11, 8>  immedHi11_8;
113        Bitfield<3,  0>  immedLo3_0;
114
115        Bitfield<15, 0>  regList;
116
117        Bitfield<23, 0>  offset;
118
119        Bitfield<23, 0>  immed23_0;
120
121        Bitfield<11, 8>  cpNum;
122        Bitfield<18, 16> fn;
123        Bitfield<14, 12> fd;
124        Bitfield<3>      fpRegImm;
125        Bitfield<3,  0>  fm;
126        Bitfield<2,  0>  fpImm;
127        Bitfield<24, 20> punwl;
128
129        Bitfield<7,  0>  m5Func;
130
131        // 16 bit thumb bitfields
132        Bitfield<15, 13> topcode15_13;
133        Bitfield<13, 11> topcode13_11;
134        Bitfield<12, 11> topcode12_11;
135        Bitfield<12, 10> topcode12_10;
136        Bitfield<11, 9>  topcode11_9;
137        Bitfield<11, 8>  topcode11_8;
138        Bitfield<10, 9>  topcode10_9;
139        Bitfield<10, 8>  topcode10_8;
140        Bitfield<9,  6>  topcode9_6;
141        Bitfield<7>      topcode7;
142        Bitfield<7, 6>   topcode7_6;
143        Bitfield<7, 5>   topcode7_5;
144        Bitfield<7, 4>   topcode7_4;
145        Bitfield<3, 0>   topcode3_0;
146    EndBitUnion(ExtMachInst)
147
148    // Shift types for ARM instructions
149    enum ArmShiftType {
150        LSL = 0,
151        LSR,
152        ASR,
153        ROR
154    };
155
156    typedef uint64_t LargestRead;
157    // Need to use 64 bits to make sure that read requests get handled properly
158
159    typedef int RegContextParam;
160    typedef int RegContextVal;
161
162    //used in FP convert & round function
163    enum ConvertType{
164        SINGLE_TO_DOUBLE,
165        SINGLE_TO_WORD,
166        SINGLE_TO_LONG,
167
168        DOUBLE_TO_SINGLE,
169        DOUBLE_TO_WORD,
170        DOUBLE_TO_LONG,
171
172        LONG_TO_SINGLE,
173        LONG_TO_DOUBLE,
174        LONG_TO_WORD,
175        LONG_TO_PS,
176
177        WORD_TO_SINGLE,
178        WORD_TO_DOUBLE,
179        WORD_TO_LONG,
180        WORD_TO_PS,
181
182        PL_TO_SINGLE,
183        PU_TO_SINGLE
184    };
185
186    //used in FP convert & round function
187    enum RoundMode{
188        RND_ZERO,
189        RND_DOWN,
190        RND_UP,
191        RND_NEAREST
192    };
193
194    enum OperatingMode {
195        MODE_USER = 16,
196        MODE_FIQ = 17,
197        MODE_IRQ = 18,
198        MODE_SVC = 19,
199        MODE_MON = 22,
200        MODE_ABORT = 23,
201        MODE_UNDEFINED = 27,
202        MODE_SYSTEM = 31
203    };
204
205    struct CoreSpecific {
206        // Empty for now on the ARM
207    };
208
209} // namespace ArmISA
210
211#endif
212