gem5  v21.1.0.2
func_unit.hh
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28 
29 #ifndef __CPU_FUNC_UNIT_HH__
30 #define __CPU_FUNC_UNIT_HH__
31 
32 #include <array>
33 #include <bitset>
34 #include <string>
35 #include <vector>
36 
37 #include "cpu/op_class.hh"
38 #include "params/FUDesc.hh"
39 #include "params/OpDesc.hh"
40 #include "sim/sim_object.hh"
41 
42 namespace gem5
43 {
44 
46 //
47 // The SimObjects we use to get the FU information into the simulator
48 //
50 
51 //
52 // We use 2 objects to specify this data in the INI file:
53 // (1) OpDesc - Describes the operation class & latencies
54 // (multiple OpDesc objects can refer to the same
55 // operation classes)
56 // (2) FUDesc - Describes the operations available in the unit &
57 // the number of these units
58 //
59 //
60 
62 //
63 // Structures used ONLY during the initialization phase...
64 //
65 //
66 //
67 
68 class OpDesc : public SimObject
69 {
70  public:
71  OpClass opClass;
73  bool pipelined;
74 
75  OpDesc(const OpDescParams &p)
77  pipelined(p.pipelined) {};
78 };
79 
80 class FUDesc : public SimObject
81 {
82  public:
84  unsigned number;
85 
86  FUDesc(const FUDescParams &p)
87  : SimObject(p), opDescList(p.opList), number(p.count) {};
88 };
89 
92 
93 
94 
95 
97 //
98 // The actual FU object
99 //
100 //
101 //
102 class FuncUnit
103 {
104  private:
105  std::array<unsigned, Num_OpClasses> opLatencies;
106  std::array<bool, Num_OpClasses> pipelined;
107  std::bitset<Num_OpClasses> capabilityList;
108 
109  public:
110  FuncUnit();
111  FuncUnit(const FuncUnit &fu);
112 
113  std::string name;
114 
115  void addCapability(OpClass cap, unsigned oplat, bool pipelined);
116 
117  bool provides(OpClass capability);
118  std::bitset<Num_OpClasses> capabilities();
119 
120  unsigned &opLatency(OpClass capability);
121  bool isPipelined(OpClass capability);
122 };
123 
124 } // namespace gem5
125 
126 #endif // __FU_POOL_HH__
op_class.hh
gem5::FuncUnit::capabilities
std::bitset< Num_OpClasses > capabilities()
Definition: func_unit.cc:82
gem5::OpDesc::pipelined
bool pipelined
Definition: func_unit.hh:73
gem5::FUDesc::FUDesc
FUDesc(const FUDescParams &p)
Definition: func_unit.hh:86
gem5::OpDesc::opClass
OpClass opClass
Definition: func_unit.hh:71
gem5::FuncUnit::capabilityList
std::bitset< Num_OpClasses > capabilityList
Definition: func_unit.hh:107
std::vector
STL vector class.
Definition: stl.hh:37
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::OpDesc::OpDesc
OpDesc(const OpDescParams &p)
Definition: func_unit.hh:75
gem5::Cycles
Cycles is a wrapper class for representing cycle counts, i.e.
Definition: types.hh:78
gem5::FuncUnit::pipelined
std::array< bool, Num_OpClasses > pipelined
Definition: func_unit.hh:106
gem5::OPDDiterator
std::vector< OpDesc * >::const_iterator OPDDiterator
Definition: func_unit.hh:90
gem5::FuncUnit::provides
bool provides(OpClass capability)
Definition: func_unit.cc:76
gem5::OpDesc
Definition: func_unit.hh:68
gem5::PowerISA::fu
Bitfield< 12 > fu
Definition: misc.hh:89
sim_object.hh
gem5::X86ISA::count
count
Definition: misc.hh:709
gem5::MipsISA::p
Bitfield< 0 > p
Definition: pra_constants.hh:326
gem5::FuncUnit::addCapability
void addCapability(OpClass cap, unsigned oplat, bool pipelined)
Definition: func_unit.cc:64
gem5::SimObject
Abstract superclass for simulation objects.
Definition: sim_object.hh:146
gem5::FUDDiterator
std::vector< FUDesc * >::const_iterator FUDDiterator
Definition: func_unit.hh:91
gem5::FUDesc::opDescList
std::vector< OpDesc * > opDescList
Definition: func_unit.hh:83
gem5::FuncUnit
Definition: func_unit.hh:102
gem5::FuncUnit::FuncUnit
FuncUnit()
Definition: func_unit.cc:42
gem5::FuncUnit::isPipelined
bool isPipelined(OpClass capability)
Definition: func_unit.cc:94
gem5::FUDesc::number
unsigned number
Definition: func_unit.hh:84
gem5::FuncUnit::name
std::string name
Definition: func_unit.hh:113
gem5
Reference material can be found at the JEDEC website: UFS standard http://www.jedec....
Definition: decoder.cc:40
gem5::OpDesc::opLat
Cycles opLat
Definition: func_unit.hh:72
gem5::FUDesc
Definition: func_unit.hh:80

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