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Diffstat (limited to 'src/arch/arm/tracers/tarmac_tracer.cc')
-rw-r--r-- | src/arch/arm/tracers/tarmac_tracer.cc | 103 |
1 files changed, 103 insertions, 0 deletions
diff --git a/src/arch/arm/tracers/tarmac_tracer.cc b/src/arch/arm/tracers/tarmac_tracer.cc new file mode 100644 index 000000000..b6f876de5 --- /dev/null +++ b/src/arch/arm/tracers/tarmac_tracer.cc @@ -0,0 +1,103 @@ +/* + * Copyright (c) 2017-2018 ARM Limited + * All rights reserved + * + * The license below extends only to copyright in the software and shall + * not be construed as granting a license to any other intellectual + * property including but not limited to intellectual property relating + * to a hardware implementation of the functionality of the software + * licensed hereunder. You may use the software subject to the license + * terms below provided that you ensure that this notice is replicated + * unmodified and in its entirety in all distributions of the software, + * modified or unmodified, in source code or in binary form. + * + * Redistribution and use in source and binary forms, with or without + * modification, are permitted provided that the following conditions are + * met: redistributions of source code must retain the above copyright + * notice, this list of conditions and the following disclaimer; + * redistributions in binary form must reproduce the above copyright + * notice, this list of conditions and the following disclaimer in the + * documentation and/or other materials provided with the distribution; + * neither the name of the copyright holders nor the names of its + * contributors may be used to endorse or promote products derived from + * this software without specific prior written permission. + * + * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS + * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT + * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR + * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT + * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, + * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT + * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, + * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY + * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT + * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE + * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. + * + * Authors: Giacomo Travaglini + */ + +#include "tarmac_tracer.hh" + +#include <string> + +#include "arch/arm/system.hh" +#include "cpu/base.hh" + +namespace Trace { + +std::string +TarmacContext::tarmacCpuName() const +{ + auto id = thread->getCpuPtr()->cpuId(); + return "cpu" + std::to_string(id); +} + +TarmacTracer::TarmacTracer(const Params *p) + : InstTracer(p), + startTick(p->start_tick), + endTick(p->end_tick) +{ + // Wrong parameter setting: The trace end happens before the + // trace start. + panic_if(startTick > endTick, + "Tarmac start point: %lu is bigger than " + "Tarmac end point: %lu\n", startTick, endTick); + + // By default cpu tracers in gem5 are not tracing faults + // (exceptions). + // This is not in compliance with the Tarmac specification: + // instructions like SVC, SMC, HVC have to be traced. + // Tarmac Tracer is then automatically enabling this behaviour. + setDebugFlag("ExecFaulting"); +} + +InstRecord * +TarmacTracer::getInstRecord(Tick when, ThreadContext *tc, + const StaticInstPtr staticInst, + TheISA::PCState pc, + const StaticInstPtr macroStaticInst) +{ + // Check if we need to start tracing since we have passed the + // tick start point. + if (when < startTick || when > endTick) + return nullptr; + + if (ArmSystem::highestELIs64(tc)) { + // TarmacTracerV8 + return new TarmacTracerRecordV8(when, tc, staticInst, pc, *this, + macroStaticInst); + } else { + // TarmacTracer + return new TarmacTracerRecord(when, tc, staticInst, pc, *this, + macroStaticInst); + } +} + +} // namespace Trace + +Trace::TarmacTracer * +TarmacTracerParams::create() +{ + return new Trace::TarmacTracer(this); +} |