gem5  v21.1.0.2
func_unit.cc
Go to the documentation of this file.
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 
29 #include "cpu/func_unit.hh"
30 
31 #include <sstream>
32 
33 #include "base/logging.hh"
34 
35 namespace gem5
36 {
37 
39 //
40 // The funciton unit
41 //
43 {
44  opLatencies.fill(0);
45  pipelined.fill(false);
46  capabilityList.reset();
47 }
48 
49 
50 // Copy constructor
52 {
53 
54  for (int i = 0; i < Num_OpClasses; ++i) {
55  opLatencies[i] = fu.opLatencies[i];
56  pipelined[i] = fu.pipelined[i];
57  }
58 
59  capabilityList = fu.capabilityList;
60 }
61 
62 
63 void
64 FuncUnit::addCapability(OpClass cap, unsigned oplat, bool pipeline)
65 {
66  if (oplat == 0)
67  panic("FuncUnit: you don't really want a zero-cycle latency do you?");
68 
69  capabilityList.set(cap);
70 
71  opLatencies[cap] = oplat;
72  pipelined[cap] = pipeline;
73 }
74 
75 bool
76 FuncUnit::provides(OpClass capability)
77 {
78  return capabilityList[capability];
79 }
80 
81 std::bitset<Num_OpClasses>
83 {
84  return capabilityList;
85 }
86 
87 unsigned &
88 FuncUnit::opLatency(OpClass cap)
89 {
90  return opLatencies[cap];
91 }
92 
93 bool
94 FuncUnit::isPipelined(OpClass capability)
95 {
96  return pipelined[capability];
97 }
98 
99 } // namespace gem5
gem5::FuncUnit::capabilities
std::bitset< Num_OpClasses > capabilities()
Definition: func_unit.cc:82
gem5::FuncUnit::capabilityList
std::bitset< Num_OpClasses > capabilityList
Definition: func_unit.hh:107
gem5::ArmISA::i
Bitfield< 7 > i
Definition: misc_types.hh:66
gem5::FuncUnit::opLatencies
std::array< unsigned, Num_OpClasses > opLatencies
Definition: func_unit.hh:105
gem5::FuncUnit::opLatency
unsigned & opLatency(OpClass capability)
Definition: func_unit.cc:88
gem5::FuncUnit::pipelined
std::array< bool, Num_OpClasses > pipelined
Definition: func_unit.hh:106
gem5::FuncUnit::provides
bool provides(OpClass capability)
Definition: func_unit.cc:76
gem5::PowerISA::fu
Bitfield< 12 > fu
Definition: misc.hh:89
func_unit.hh
gem5::FuncUnit::addCapability
void addCapability(OpClass cap, unsigned oplat, bool pipelined)
Definition: func_unit.cc:64
gem5::FuncUnit
Definition: func_unit.hh:102
gem5::FuncUnit::FuncUnit
FuncUnit()
Definition: func_unit.cc:42
logging.hh
gem5::FuncUnit::isPipelined
bool isPipelined(OpClass capability)
Definition: func_unit.cc:94
gem5::Num_OpClasses
static const OpClass Num_OpClasses
Definition: op_class.hh:108
pipeline
Definition: pipeline.h:43
gem5
Reference material can be found at the JEDEC website: UFS standard http://www.jedec....
Definition: decoder.cc:40
panic
#define panic(...)
This implements a cprintf based panic() function.
Definition: logging.hh:177

Generated on Tue Sep 21 2021 12:25:00 for gem5 by doxygen 1.8.17