bitfields.isa revision 6743
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 OPCODE_24	   opcode24;
42def bitfield OPCODE_23_20  opcode23_20;
43def bitfield OPCODE_23_21  opcode23_21;
44def bitfield OPCODE_22     opcode22;
45def bitfield OPCODE_20	   opcode20;
46def bitfield OPCODE_19	   opcode19;
47def bitfield OPCODE_18	   opcode18;
48def bitfield OPCODE_15_12  opcode15_12;
49def bitfield OPCODE_15	   opcode15;
50def bitfield MISC_OPCODE   miscOpcode;
51def bitfield OPCODE_7      opcode7;
52def bitfield OPCODE_4      opcode4;
53
54def bitfield IS_MISC       isMisc;
55def bitfield SEVEN_AND_FOUR sevenAndFour;
56
57// Other
58def bitfield COND_CODE     condCode;
59def bitfield S_FIELD       sField;
60def bitfield RN            rn;
61def bitfield RD            rd;
62def bitfield SHIFT_SIZE    shiftSize;
63def bitfield SHIFT         shift;
64def bitfield RM            rm;
65
66def bitfield RS            rs;
67
68def bitfield PUSWL         puswl;
69def bitfield PREPOST       puswl.prepost;
70def bitfield UP               puswl.up;
71def bitfield PSRUSER       puswl.psruser;
72def bitfield WRITEBACK     puswl.writeback;
73def bitfield LOADOP        puswl.loadOp;
74
75def bitfield PUBWL         pubwl;
76
77def bitfield IMM           imm;
78
79def bitfield IMMED_11_0    immed11_0;
80
81def bitfield IMMED_HI_11_8 immedHi11_8;
82def bitfield IMMED_LO_3_0  immedLo3_0;
83
84def bitfield IMMED_23_0    immed23_0;
85
86def bitfield CPNUM	   cpNum;
87// Note that FP Regs are only 3 bits
88def bitfield FN		   fn;
89def bitfield FD		   fd;
90def bitfield FPREGIMM	   fpRegImm;
91// We can just use 3:0 for FM since the hard-wired FP regs are handled in
92// float_regfile.hh
93def bitfield FM		   fm;
94def bitfield FPIMM	   fpImm;
95def bitfield PUNWL	   punwl;
96
97// M5 instructions
98def bitfield M5FUNC        m5Func;
99
100