bitfields.isa revision 6759
1// -*- mode:c++ -*-
2
3// Copyright (c) 2007-2008 The Florida State University
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 are
8// met: redistributions of source code must retain the above copyright
9// notice, this list of conditions and the following disclaimer;
10// redistributions in binary form must reproduce the above copyright
11// notice, this list of conditions and the following disclaimer in the
12// documentation and/or other materials provided with the distribution;
13// neither the name of the copyright holders nor the names of its
14// contributors may be used to endorse or promote products derived from
15// this software without specific prior written permission.
16//
17// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
18// "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
19// LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
20// A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
21// OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
22// SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
23// LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
24// DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
25// THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
26// (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
27// OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
28//
29// Authors: Stephen Hines
30
31////////////////////////////////////////////////////////////////////
32//
33// Bitfield definitions.
34//
35
36// Opcode fields
37def bitfield ENCODING      encoding;
38def bitfield OPCODE        opcode;
39def bitfield MEDIA_OPCODE  mediaOpcode;
40def bitfield MEDIA_OPCODE2 mediaOpcode2;
41def bitfield USEIMM        useImm;
42def bitfield OPCODE_24	   opcode24;
43def bitfield OPCODE_23_20  opcode23_20;
44def bitfield OPCODE_23_21  opcode23_21;
45def bitfield OPCODE_22     opcode22;
46def bitfield OPCODE_20	   opcode20;
47def bitfield OPCODE_19	   opcode19;
48def bitfield OPCODE_18	   opcode18;
49def bitfield OPCODE_15_12  opcode15_12;
50def bitfield OPCODE_15	   opcode15;
51def bitfield MISC_OPCODE   miscOpcode;
52def bitfield OPC2          opc2; 
53def bitfield OPCODE_7      opcode7;
54def bitfield OPCODE_4      opcode4;
55
56def bitfield IS_MISC       isMisc;
57def bitfield SEVEN_AND_FOUR sevenAndFour;
58
59// Other
60def bitfield COND_CODE     condCode;
61def bitfield S_FIELD       sField;
62def bitfield RN            rn;
63def bitfield RD            rd;
64def bitfield SHIFT_SIZE    shiftSize;
65def bitfield SHIFT         shift;
66def bitfield RM            rm;
67
68def bitfield RS            rs;
69
70def bitfield PUSWL         puswl;
71def bitfield PREPOST       puswl.prepost;
72def bitfield UP               puswl.up;
73def bitfield PSRUSER       puswl.psruser;
74def bitfield WRITEBACK     puswl.writeback;
75def bitfield LOADOP        puswl.loadOp;
76
77def bitfield PUBWL         pubwl;
78
79def bitfield IMM           imm;
80
81def bitfield IMMED_11_0    immed11_0;
82
83def bitfield IMMED_HI_11_8 immedHi11_8;
84def bitfield IMMED_LO_3_0  immedLo3_0;
85
86def bitfield IMMED_23_0    immed23_0;
87
88def bitfield CPNUM	   cpNum;
89// Note that FP Regs are only 3 bits
90def bitfield FN		   fn;
91def bitfield FD		   fd;
92def bitfield FPREGIMM	   fpRegImm;
93// We can just use 3:0 for FM since the hard-wired FP regs are handled in
94// float_regfile.hh
95def bitfield FM		   fm;
96def bitfield FPIMM	   fpImm;
97def bitfield PUNWL	   punwl;
98
99// M5 instructions
100def bitfield M5FUNC        m5Func;
101
102