op_class.hh revision 2632:1bb2f91485ea 
1/*
2 * Copyright (c) 2003-2005 The Regents of The University of Michigan
3 * All rights reserved.
4 *
5 * Redistribution and use in source and binary forms, with or without
6 * modification, are permitted provided that the following conditions are
7 * met: redistributions of source code must retain the above copyright
8 * notice, this list of conditions and the following disclaimer;
9 * redistributions in binary form must reproduce the above copyright
10 * notice, this list of conditions and the following disclaimer in the
11 * documentation and/or other materials provided with the distribution;
12 * neither the name of the copyright holders nor the names of its
13 * contributors may be used to endorse or promote products derived from
14 * this software without specific prior written permission.
15 *
16 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
17 * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
18 * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
19 * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
20 * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
21 * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
22 * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
23 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
24 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
25 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
26 * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
27 */
28
29#ifndef __CPU__OP_CLASS_HH__
30#define __CPU__OP_CLASS_HH__
31
32/**
33 * @file
34 * Definition of operation classes.
35 */
36
37/**
38 * Instruction operation classes.  These classes are used for
39 * assigning instructions to functional units.
40 */
41enum OpClass {
42    No_OpClass = 0,	///< Instruction does not use a functional unit
43    IntAluOp,		///< Integer ALU operaton (add/sub/logical)
44    IntMultOp,		///< Integer multiply
45    IntDivOp,		///< Integer divide
46    FloatAddOp,		///< Floating point add/subtract
47    FloatCmpOp,		///< Floating point comparison
48    FloatCvtOp,		///< Floating point<->integer conversion
49    FloatMultOp,	///< Floating point multiply
50    FloatDivOp,		///< Floating point divide
51    FloatSqrtOp,	///< Floating point square root
52    MemReadOp,		///< Memory read port
53    MemWriteOp,		///< Memory write port
54    IprAccessOp,	///< Internal Processor Register read/write port
55    InstPrefetchOp,	///< Instruction prefetch port (on I-cache)
56    Num_OpClasses	///< Total number of operation classes
57};
58
59/**
60 * Array mapping OpClass enum values to strings.  Defined in op_class.cc.
61 */
62extern const char *opClassStrings[];
63
64#endif // __CPU__OP_CLASS_HH__
65