exetrace.cc

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 * to a hardware implementation of the functionality of the software
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 * terms below provided that you ensure that this notice is replicated
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 * modified or unmodified, in source code or in binary form.
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 * Copyright (c) 2001-2005 The Regents of The University of Michigan
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 * met: redistributions of source code must retain the above copyright
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#include "cpu/exetrace.hh"
 
#include <iomanip>
#include <sstream>
 
#include "arch/generic/mmu.hh"
#include "base/loader/symtab.hh"
#include "cpu/base.hh"
#include "cpu/static_inst.hh"
#include "cpu/thread_context.hh"
#include "debug/ExecAll.hh"
#include "debug/FmtTicksOff.hh"
#include "enums/OpClass.hh"
 
namespace gem5
{
 
namespace trace {
 
void
ExeTracerRecord::traceInst(const StaticInstPtr &inst, bool ran)
{
    std::stringstream outs;
 
    const bool in_user_mode = thread->getIsaPtr()->inUserMode();
    if (in_user_mode && !debug::ExecUser)
        return;
    if (!in_user_mode && !debug::ExecKernel)
        return;
 
    if (debug::ExecAsid) {
        outs << "A" << std::dec <<
            thread->getIsaPtr()->getExecutingAsid() << " ";
    }
 
    if (debug::ExecThread)
        outs << "T" << thread->threadId() << " : ";
 
    Addr cur_pc = thread->getMMUPtr()->getValidAddr(
        pc->instAddr(), thread, BaseMMU::Execute);
    loader::SymbolTable::const_iterator it;
    ccprintf(outs, "%#x", cur_pc);
    if (debug::ExecSymbol && (!FullSystem || !in_user_mode) &&
            (it = loader::debugSymbolTable.findNearest(cur_pc)) !=
                loader::debugSymbolTable.end()) {
        Addr delta = cur_pc - it->address();
        if (delta)
            ccprintf(outs, " @%s+%d", it->name(), delta);
        else
            ccprintf(outs, " @%s", it->name());
    }
 
    if (inst->isMicroop()) {
        ccprintf(outs, ".%2d", pc->microPC());
    } else {
        ccprintf(outs, "   ");
    }
 
    ccprintf(outs, " : ");
 
    //
    //  Print decoded instruction
    //
 
    outs << std::setw(26) << std::left;
    outs << tracer.disassemble(inst, *pc, &loader::debugSymbolTable);
 
    if (ran) {
        outs << " : ";
 
        if (debug::ExecOpClass) {
            outs << enums::OpClassStrings[inst->opClass()] << " : ";
        }
 
        if (debug::ExecResult && !predicate) {
            outs << "Predicated False";
        }
 
        if (debug::ExecResult && dataStatus != DataInvalid) {
            if (dataStatus == DataReg) {
                if (vectorLengthInBytes > 0 && inst->isVector()) {
                    outs << " D=" << data.asReg.asString(vectorLengthInBytes);
                } else {
                    ccprintf(outs, " D=%s", data.asReg.asString());
                }
            } else {
                ccprintf(outs, " D=%#018x", data.asInt);
            }
        }
 
        if (debug::ExecEffAddr && getMemValid())
            outs << " A=0x" << std::hex << addr;
 
        if (debug::ExecFetchSeq && fetch_seq_valid)
            outs << "  FetchSeq=" << std::dec << fetch_seq;
 
        if (debug::ExecCPSeq && cp_seq_valid)
            outs << "  CPSeq=" << std::dec << cp_seq;
 
        if (debug::ExecFlags) {
            outs << "  flags=(";
            inst->printFlags(outs, "|");
            outs << ")";
        }
    }
 
    //
    //  End of line...
    //
    outs << std::endl;
 
    trace::getDebugLogger()->dprintf_flag(
        when, thread->getCpuPtr()->name(), "ExecEnable", "%s",
        outs.str().c_str());
}
 
void
ExeTracerRecord::dump()
{
    /*
     * The behavior this check tries to achieve is that if ExecMacro is on,
     * the macroop will be printed. If it's on and microops are also on, it's
     * printed before the microops start printing to give context. If the
     * microops aren't printed, then it's printed only when the final microop
     * finishes. Macroops then behave like regular instructions and don't
     * complete/print when they fault.
     */
    if (debug::ExecMacro && staticInst->isMicroop() &&
        ((debug::ExecMicro &&
            macroStaticInst && staticInst->isFirstMicroop()) ||
            (!debug::ExecMicro &&
             macroStaticInst && staticInst->isLastMicroop()))) {
        traceInst(macroStaticInst, false);
    }
    if (debug::ExecMicro || !staticInst->isMicroop()) {
        traceInst(staticInst, true);
    }
}
 
} // namespace trace
} // namespace gem5