1// Copyright (c) AMD
2// All rights reserved.
3//
4// Authors: Marc Orr
5
6// Monitor Instruction
7
8output header {{
9 class MonitorInst : public X86ISA::X86StaticInst
10 {
11 public:
12 static const RegIndex foldOBit = 0;
13 /// Constructor
14 MonitorInst(const char *_mnemonic, ExtMachInst _machInst,
15 OpClass __opClass) :
16 X86ISA::X86StaticInst(_mnemonic, _machInst, __opClass)
17 { }
18
19 std::string generateDisassembly(Addr pc,
20 const SymbolTable *symtab) const;
21 };
22}};
23
24output decoder {{
25 std::string MonitorInst::generateDisassembly(Addr PC,
26 const SymbolTable *symtab) const
27 {
28 std::stringstream response;
29
30 printMnemonic(response, mnemonic);
31 ccprintf(response, " ");
32 printReg(response, _srcRegIdx[0], machInst.opSize);
33 return response.str();
34 }
35}};
36
37def format MonitorInst(code, *opt_flags) {{
38 iop = InstObjParams(name, Name, 'MonitorInst', code, opt_flags)
39 header_output = BasicDeclare.subst(iop)
40 decoder_output = BasicConstructor.subst(iop)
41 decode_block = BasicDecode.subst(iop)
42 exec_output = BasicExecute.subst(iop)
43}};
44
45
46// Mwait instruction
47
48// Declarations for execute() methods.
49def template MwaitExecDeclare {{
50 Fault execute(ExecContext *, Trace::InstRecord *) const;
51 Fault initiateAcc(ExecContext *, Trace::InstRecord *) const;
52 Fault completeAcc(PacketPtr, ExecContext *, Trace::InstRecord *) const;
53}};
54
55def template MwaitDeclare {{
56 class %(class_name)s : public %(base_class)s
57 {
58 public:
59 // Constructor.
60 %(class_name)s(ExtMachInst machInst);
61 %(MwaitExecDeclare)s
62 };
63}};
64
65def template MwaitInitiateAcc {{
66 Fault %(class_name)s::initiateAcc(ExecContext * xc,
67 Trace::InstRecord * traceData) const
68 {
69 unsigned s = 0x8; //size
70 unsigned f = 0; //flags
71 initiateMemRead(xc, traceData, xc->getAddrMonitor()->vAddr, s, f);
72 return NoFault;
73 }
74}};
75
76def template MwaitCompleteAcc {{
77 Fault %(class_name)s::completeAcc(PacketPtr pkt, ExecContext *xc,
78 Trace::InstRecord *traceData) const
79 {
80 MicroHalt hltObj(machInst, mnemonic, 0x0);
81 if(xc->mwait(pkt)) {
82 hltObj.execute(xc, traceData);
83 }
84 return NoFault;
85 }
86}};
87
88output header {{
89 class MwaitInst : public X86ISA::X86StaticInst
90 {
91 public:
92 static const RegIndex foldOBit = 0;
93 /// Constructor
94 MwaitInst(const char *_mnemonic, ExtMachInst _machInst,
95 OpClass __opClass) :
96 X86ISA::X86StaticInst(_mnemonic, _machInst, __opClass)
97 {
98 flags[IsMemRef] = 1;
99 flags[IsLoad] = 1;
100 }
101
102 std::string generateDisassembly(Addr pc,
103 const SymbolTable *symtab) const;
104 };
105}};
106
107output decoder {{
108 std::string MwaitInst::generateDisassembly(Addr PC,
109 const SymbolTable *symtab) const
110 {
111 std::stringstream response;
112
113 // Although mwait could take hints from eax and ecx, the _srcRegIdx
114 // is not set, and thus should not be printed here
115 printMnemonic(response, mnemonic);
116 return response.str();
117 }
118}};
119
120def format MwaitInst(code, *opt_flags) {{
121 iop = InstObjParams(name, Name, 'MwaitInst', code, opt_flags)
122 header_output = MwaitDeclare.subst(iop)
123 decoder_output = BasicConstructor.subst(iop)
124 decode_block = BasicDecode.subst(iop)
125 exec_output = BasicExecute.subst(iop)
126 exec_output += MwaitInitiateAcc.subst(iop)
127 exec_output += MwaitCompleteAcc.subst(iop)
128}};
129