bitfields.isa revision 7103 
1// -*- mode:c++ -*-
2
3// Copyright (c) 2010 ARM Limited
4// All rights reserved
5//
6// The license below extends only to copyright in the software and shall
7// not be construed as granting a license to any other intellectual
8// property including but not limited to intellectual property relating
9// to a hardware implementation of the functionality of the software
10// licensed hereunder.  You may use the software subject to the license
11// terms below provided that you ensure that this notice is replicated
12// unmodified and in its entirety in all distributions of the software,
13// modified or unmodified, in source code or in binary form.
14//
15// Copyright (c) 2007-2008 The Florida State University
16// All rights reserved.
17//
18// Redistribution and use in source and binary forms, with or without
19// modification, are permitted provided that the following conditions are
20// met: redistributions of source code must retain the above copyright
21// notice, this list of conditions and the following disclaimer;
22// redistributions in binary form must reproduce the above copyright
23// notice, this list of conditions and the following disclaimer in the
24// documentation and/or other materials provided with the distribution;
25// neither the name of the copyright holders nor the names of its
26// contributors may be used to endorse or promote products derived from
27// this software without specific prior written permission.
28//
29// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
30// "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
31// LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
32// A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
33// OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
34// SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
35// LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
36// DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
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39// OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
40//
41// Authors: Stephen Hines
42
43////////////////////////////////////////////////////////////////////
44//
45// Bitfield definitions.
46//
47
48// Opcode fields
49def bitfield ENCODING      encoding;
50def bitfield OPCODE        opcode;
51def bitfield MEDIA_OPCODE  mediaOpcode;
52def bitfield MEDIA_OPCODE2 mediaOpcode2;
53def bitfield USEIMM        useImm;
54def bitfield OPCODE_24	   opcode24;
55def bitfield OPCODE_23_20  opcode23_20;
56def bitfield OPCODE_23_21  opcode23_21;
57def bitfield OPCODE_22     opcode22;
58def bitfield OPCODE_20	   opcode20;
59def bitfield OPCODE_19	   opcode19;
60def bitfield OPCODE_18	   opcode18;
61def bitfield OPCODE_15_12  opcode15_12;
62def bitfield OPCODE_15	   opcode15;
63def bitfield MISC_OPCODE   miscOpcode;
64def bitfield OPC2          opc2; 
65def bitfield OPCODE_7      opcode7;
66def bitfield OPCODE_4      opcode4;
67
68def bitfield IS_MISC       isMisc;
69def bitfield SEVEN_AND_FOUR sevenAndFour;
70
71def bitfield THUMB         thumb;
72def bitfield BIGTHUMB      bigThumb;
73
74// Other
75def bitfield COND_CODE     condCode;
76def bitfield S_FIELD       sField;
77def bitfield RN            rn;
78def bitfield RD            rd;
79def bitfield SHIFT_SIZE    shiftSize;
80def bitfield SHIFT         shift;
81def bitfield RM            rm;
82
83def bitfield RS            rs;
84
85def bitfield PUSWL         puswl;
86def bitfield PREPOST       puswl.prepost;
87def bitfield UP               puswl.up;
88def bitfield PSRUSER       puswl.psruser;
89def bitfield WRITEBACK     puswl.writeback;
90def bitfield LOADOP        puswl.loadOp;
91
92def bitfield PUBWL         pubwl;
93
94def bitfield IMM           imm;
95
96def bitfield IMMED_11_0    immed11_0;
97
98def bitfield IMMED_HI_11_8 immedHi11_8;
99def bitfield IMMED_LO_3_0  immedLo3_0;
100
101def bitfield IMMED_23_0    immed23_0;
102
103def bitfield CPNUM	   cpNum;
104// Note that FP Regs are only 3 bits
105def bitfield FN		   fn;
106def bitfield FD		   fd;
107def bitfield FPREGIMM	   fpRegImm;
108// We can just use 3:0 for FM since the hard-wired FP regs are handled in
109// float_regfile.hh
110def bitfield FM		   fm;
111def bitfield FPIMM	   fpImm;
112def bitfield PUNWL	   punwl;
113
114// M5 instructions
115def bitfield M5FUNC        m5Func;
116
117// Thumb bitfields
118def bitfield TOPCODE_15_13  topcode15_13;
119def bitfield TOPCODE_13_11  topcode13_11;
120def bitfield TOPCODE_12_11  topcode12_11;
121def bitfield TOPCODE_12_10  topcode12_10;
122def bitfield TOPCODE_11_9   topcode11_9;
123def bitfield TOPCODE_11_8   topcode11_8;
124def bitfield TOPCODE_10_9   topcode10_9;
125def bitfield TOPCODE_10_8   topcode10_8;
126def bitfield TOPCODE_9_6    topcode9_6;
127def bitfield TOPCODE_7      topcode7;
128def bitfield TOPCODE_7_6    topcode7_6;
129def bitfield TOPCODE_7_5    topcode7_5;
130def bitfield TOPCODE_7_4    topcode7_4;
131def bitfield TOPCODE_3_0    topcode3_0;
132