gem5  v20.1.0.0
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 
43 //
44 // Structures used ONLY during the initialization phase...
45 //
46 //
47 //
48 
49 class OpDesc : public SimObject
50 {
51  public:
52  OpClass opClass;
54  bool pipelined;
55 
56  OpDesc(const OpDescParams *p)
58  pipelined(p->pipelined) {};
59 };
60 
61 class FUDesc : public SimObject
62 {
63  public:
65  unsigned number;
66 
67  FUDesc(const FUDescParams *p)
68  : SimObject(p), opDescList(p->opList), number(p->count) {};
69 };
70 
73 
74 
75 
76 
78 //
79 // The actual FU object
80 //
81 //
82 //
83 class FuncUnit
84 {
85  private:
86  std::array<unsigned, Num_OpClasses> opLatencies;
87  std::array<bool, Num_OpClasses> pipelined;
88  std::bitset<Num_OpClasses> capabilityList;
89 
90  public:
91  FuncUnit();
92  FuncUnit(const FuncUnit &fu);
93 
94  std::string name;
95 
96  void addCapability(OpClass cap, unsigned oplat, bool pipelined);
97 
98  bool provides(OpClass capability);
99  std::bitset<Num_OpClasses> capabilities();
100 
101  unsigned &opLatency(OpClass capability);
102  bool isPipelined(OpClass capability);
103 };
104 
105 #endif // __FU_POOL_HH__
OpDesc::opClass
OpClass opClass
Definition: func_unit.hh:52
FuncUnit::addCapability
void addCapability(OpClass cap, unsigned oplat, bool pipelined)
Definition: func_unit.cc:64
FuncUnit::provides
bool provides(OpClass capability)
Definition: func_unit.cc:76
OpDesc::opLat
Cycles opLat
Definition: func_unit.hh:53
op_class.hh
std::vector< OpDesc * >
FuncUnit::FuncUnit
FuncUnit()
Definition: func_unit.cc:42
X86ISA::count
count
Definition: misc.hh:703
FUDesc::number
unsigned number
Definition: func_unit.hh:65
FUDesc
Definition: func_unit.hh:61
FuncUnit::opLatency
unsigned & opLatency(OpClass capability)
Definition: func_unit.cc:88
FuncUnit::isPipelined
bool isPipelined(OpClass capability)
Definition: func_unit.cc:94
sim_object.hh
FUDesc::opDescList
std::vector< OpDesc * > opDescList
Definition: func_unit.hh:64
FuncUnit::name
std::string name
Definition: func_unit.hh:94
PowerISA::fu
Bitfield< 12 > fu
Definition: miscregs.hh:82
OpDesc::pipelined
bool pipelined
Definition: func_unit.hh:54
FuncUnit::capabilityList
std::bitset< Num_OpClasses > capabilityList
Definition: func_unit.hh:88
FUDDiterator
std::vector< FUDesc * >::const_iterator FUDDiterator
Definition: func_unit.hh:72
OpDesc::OpDesc
OpDesc(const OpDescParams *p)
Definition: func_unit.hh:56
Cycles
Cycles is a wrapper class for representing cycle counts, i.e.
Definition: types.hh:83
MipsISA::p
Bitfield< 0 > p
Definition: pra_constants.hh:323
FuncUnit::opLatencies
std::array< unsigned, Num_OpClasses > opLatencies
Definition: func_unit.hh:86
FUDesc::FUDesc
FUDesc(const FUDescParams *p)
Definition: func_unit.hh:67
OPDDiterator
std::vector< OpDesc * >::const_iterator OPDDiterator
Definition: func_unit.hh:71
FuncUnit
Definition: func_unit.hh:83
OpDesc
Definition: func_unit.hh:49
FuncUnit::capabilities
std::bitset< Num_OpClasses > capabilities()
Definition: func_unit.cc:82
FuncUnit::pipelined
std::array< bool, Num_OpClasses > pipelined
Definition: func_unit.hh:87
SimObject
Abstract superclass for simulation objects.
Definition: sim_object.hh:92

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