1/*
2 * Copyright (c) 2002-2006 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 * Authors: Steve Raasch
29 */
30
31#ifndef __CPU_FUNC_UNIT_HH__
32#define __CPU_FUNC_UNIT_HH__
33
34#include <bitset>
35#include <string>
36#include <vector>
37
38#include "cpu/op_class.hh"
39#include "sim/sim_object.hh"
40
41////////////////////////////////////////////////////////////////////////////
42//
43// Structures used ONLY during the initialization phase...
44//
45//
46//
47
48struct OpDesc : public SimObject
49{
50 OpClass opClass;
51 unsigned opLat;
52 unsigned issueLat;
53
54 OpDesc(std::string name, OpClass c, unsigned o, unsigned i)
55 : SimObject(name), opClass(c), opLat(o), issueLat(i) {};
56};
57
58struct FUDesc : public SimObject
59{
60 std::vector<OpDesc *> opDescList;
61 unsigned number;
62
63 FUDesc(std::string name, std::vector<OpDesc *> l, unsigned n)
64 : SimObject(name), opDescList(l), number(n) {};
65};
66
67typedef std::vector::iterator OPDDiterator;
68typedef std::vector::iterator FUDDiterator;
69
70
71
72
73////////////////////////////////////////////////////////////////////////////
74//
75// The actual FU object
76//
77//
78//
79class FuncUnit
80{
81 private:
82 unsigned opLatencies[Num_OpClasses];
83 unsigned issueLatencies[Num_OpClasses];
84 std::bitset<Num_OpClasses> capabilityList;
85
86 public:
87 FuncUnit();
88 FuncUnit(const FuncUnit &fu);
89
90 std::string name;
91
92 void addCapability(OpClass cap, unsigned oplat, unsigned issuelat);
93
94 bool provides(OpClass capability);
95 std::bitset<Num_OpClasses> capabilities();
96
97 unsigned &opLatency(OpClass capability);
98 unsigned issueLatency(OpClass capability);
99};
100
101#endif // __FU_POOL_HH__