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40 #include "cpu/inst_pb_trace.hh"
42 #include "base/callback.hh"
43 #include "base/output.hh"
44 #include "config/the_isa.hh"
45 #include "cpu/static_inst.hh"
46 #include "cpu/thread_context.hh"
47 #include "debug/ExecEnable.hh"
48 #include "params/InstPBTrace.hh"
49 #include "proto/inst.pb.h"
50 #include "sim/core.hh"
54 ProtoOutputStream
*InstPBTrace::traceStream
;
57 InstPBTraceRecord::dump()
59 // We're trying to build an instruction trace so we just want macro-ops and
60 // instructions that aren't macro-oped
61 if ((macroStaticInst
&& staticInst
->isFirstMicroop()) ||
62 !staticInst
->isMicroop()) {
63 tracer
.traceInst(thread
, staticInst
, pc
);
66 // If this instruction accessed memory lets record it
68 tracer
.traceMem(staticInst
, getAddr(), getSize(), getFlags());
71 InstPBTrace::InstPBTrace(const InstPBTraceParams
*p
)
72 : InstTracer(p
), curMsg(nullptr)
74 // Create our output file
75 createTraceFile(p
->file_name
);
79 InstPBTrace::createTraceFile(std::string filename
)
81 // Since there is only one output file for all tracers check if it exists
85 traceStream
= new ProtoOutputStream(simout
.resolve(filename
));
88 ProtoMessage::InstHeader header_msg
;
89 header_msg
.set_obj_id("gem5 generated instruction trace");
90 header_msg
.set_ver(0);
91 header_msg
.set_tick_freq(SimClock::Frequency
);
92 header_msg
.set_has_mem(true);
93 traceStream
->write(header_msg
);
95 // get a callback when we exit so we can close the file
96 Callback
*cb
= new MakeCallback
<InstPBTrace
,
97 &InstPBTrace::closeStreams
>(this);
98 registerExitCallback(cb
);
102 InstPBTrace::closeStreams()
105 traceStream
->write(*curMsg
);
117 InstPBTrace::~InstPBTrace()
123 InstPBTrace::getInstRecord(Tick when
, ThreadContext
*tc
, const StaticInstPtr si
,
124 TheISA::PCState pc
, const StaticInstPtr mi
)
126 // Only record the trace if Exec debugging is enabled
127 if (!Debug::ExecEnable
)
130 return new InstPBTraceRecord(*this, when
, tc
, si
, pc
, mi
);
135 InstPBTrace::traceInst(ThreadContext
*tc
, StaticInstPtr si
, TheISA::PCState pc
)
138 /// @todo if we are running multi-threaded I assume we'd need a lock here
139 traceStream
->write(*curMsg
);
144 // Create a new instruction message and fill out the fields
145 curMsg
= new ProtoMessage::Inst
;
146 curMsg
->set_pc(pc
.pc());
147 curMsg
->set_inst(static_cast<uint32_t>(bits(si
->machInst
, 31, 0)));
148 curMsg
->set_cpuid(tc
->cpuId());
149 curMsg
->set_tick(curTick());
150 curMsg
->set_type(static_cast<ProtoMessage::Inst_InstType
>(si
->opClass()));
151 curMsg
->set_inst_flags(bits(si
->machInst
, 7, 0));
156 InstPBTrace::traceMem(StaticInstPtr si
, Addr a
, Addr s
, unsigned f
)
158 panic_if(!curMsg
, "Memory access w/o msg?!");
160 // We do a poor job identifying macro-ops that are load/stores
161 curMsg
->set_type(static_cast<ProtoMessage::Inst_InstType
>(si
->opClass()));
163 ProtoMessage::Inst::MemAccess
*mem_msg
= curMsg
->add_mem_access();
164 mem_msg
->set_addr(a
);
165 mem_msg
->set_size(s
);
166 mem_msg
->set_mem_flags(f
);
174 InstPBTraceParams::create()
176 return new Trace::InstPBTrace(this);