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(%(CPU_exec_context)s *, Trace::InstRecord *) const;
51 Fault initiateAcc(%(CPU_exec_context)s *, Trace::InstRecord *) const;
52 Fault completeAcc(PacketPtr, %(CPU_exec_context)s *,
53 Trace::InstRecord *) const;
54}};
55
56def template MwaitDeclare {{
57 class %(class_name)s : public %(base_class)s
58 {
59 public:
60 // Constructor.
61 %(class_name)s(ExtMachInst machInst);
62 %(MwaitExecDeclare)s
63 };
64}};
65
66def template MwaitInitiateAcc {{
67 Fault %(class_name)s::initiateAcc(CPU_EXEC_CONTEXT * xc,
68 Trace::InstRecord * traceData) const
69 {
70 unsigned s = 0x8; //size
71 unsigned f = 0; //flags
72 initiateMemRead(xc, traceData, xc->getAddrMonitor()->vAddr, s, f);
73 return NoFault;
74 }
75}};
76
77def template MwaitCompleteAcc {{
78 Fault %(class_name)s::completeAcc(PacketPtr pkt, CPU_EXEC_CONTEXT *xc,
79 Trace::InstRecord *traceData) const
80 {
81 MicroHalt hltObj(machInst, mnemonic, 0x0);
82 if(xc->mwait(pkt)) {
83 hltObj.execute(xc, traceData);
84 }
85 return NoFault;
86 }
87}};
88
89output header {{
90 class MwaitInst : public X86ISA::X86StaticInst
91 {
92 public:
93 static const RegIndex foldOBit = 0;
94 /// Constructor
95 MwaitInst(const char *_mnemonic, ExtMachInst _machInst,
96 OpClass __opClass) :
97 X86ISA::X86StaticInst(_mnemonic, _machInst, __opClass)
98 {
99 flags[IsMemRef] = 1;
100 flags[IsLoad] = 1;
101 }
102
103 std::string generateDisassembly(Addr pc,
104 const SymbolTable *symtab) const;
105 };
106}};
107
108output decoder {{
109 std::string MwaitInst::generateDisassembly(Addr PC,
110 const SymbolTable *symtab) const
111 {
112 std::stringstream response;
113
114 // Although mwait could take hints from eax and ecx, the _srcRegIdx
115 // is not set, and thus should not be printed here
116 printMnemonic(response, mnemonic);
117 return response.str();
118 }
119}};
120
121def format MwaitInst(code, *opt_flags) {{
122 iop = InstObjParams(name, Name, 'MwaitInst', code, opt_flags)
123 header_output = MwaitDeclare.subst(iop)
124 decoder_output = BasicConstructor.subst(iop)
125 decode_block = BasicDecode.subst(iop)
126 exec_output = BasicExecute.subst(iop)
127 exec_output += MwaitInitiateAcc.subst(iop)
128 exec_output += MwaitCompleteAcc.subst(iop)
129}};
130