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-rw-r--r--src/cpu/SConscript1
-rw-r--r--src/cpu/checker/cpu.cc408
-rw-r--r--src/cpu/checker/cpu_impl.hh362
3 files changed, 409 insertions, 362 deletions
diff --git a/src/cpu/SConscript b/src/cpu/SConscript
index 3ca4a1471..0b0bf4692 100644
--- a/src/cpu/SConscript
+++ b/src/cpu/SConscript
@@ -184,6 +184,7 @@ if 'OzoneCPU' in env['CPU_MODELS']:
sources += Split('ozone/checker_builder.cc')
if env['USE_CHECKER']:
+ sources += Split('checker/cpu.cc')
checker_supports = False
for i in CheckerSupportedCPUList:
if i in env['CPU_MODELS']:
diff --git a/src/cpu/checker/cpu.cc b/src/cpu/checker/cpu.cc
new file mode 100644
index 000000000..1540a6b94
--- /dev/null
+++ b/src/cpu/checker/cpu.cc
@@ -0,0 +1,408 @@
+/*
+ * Copyright (c) 2006 The Regents of The University of Michigan
+ * All rights reserved.
+ *
+ * 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: Kevin Lim
+ */
+
+#include <list>
+#include <string>
+
+#include "cpu/base.hh"
+#include "cpu/checker/cpu.hh"
+#include "cpu/simple_thread.hh"
+#include "cpu/thread_context.hh"
+#include "cpu/static_inst.hh"
+#include "mem/packet_impl.hh"
+#include "sim/byteswap.hh"
+
+#if FULL_SYSTEM
+#include "arch/vtophys.hh"
+#include "kern/kernel_stats.hh"
+#endif // FULL_SYSTEM
+
+using namespace std;
+//The CheckerCPU does alpha only
+using namespace AlphaISA;
+
+void
+CheckerCPU::init()
+{
+}
+
+CheckerCPU::CheckerCPU(Params *p)
+ : BaseCPU(p), thread(NULL), tc(NULL)
+{
+ memReq = NULL;
+
+ numInst = 0;
+ startNumInst = 0;
+ numLoad = 0;
+ startNumLoad = 0;
+ youngestSN = 0;
+
+ changedPC = willChangePC = changedNextPC = false;
+
+ exitOnError = p->exitOnError;
+ warnOnlyOnLoadError = p->warnOnlyOnLoadError;
+#if FULL_SYSTEM
+ itb = p->itb;
+ dtb = p->dtb;
+ systemPtr = NULL;
+#else
+ process = p->process;
+#endif
+
+ result.integer = 0;
+}
+
+CheckerCPU::~CheckerCPU()
+{
+}
+
+void
+CheckerCPU::setMemory(MemObject *mem)
+{
+#if !FULL_SYSTEM
+ memPtr = mem;
+ thread = new SimpleThread(this, /* thread_num */ 0, process,
+ /* asid */ 0, mem);
+
+ thread->setStatus(ThreadContext::Suspended);
+ tc = thread->getTC();
+ threadContexts.push_back(tc);
+#endif
+}
+
+void
+CheckerCPU::setSystem(System *system)
+{
+#if FULL_SYSTEM
+ systemPtr = system;
+
+ thread = new SimpleThread(this, 0, systemPtr, itb, dtb, false);
+
+ thread->setStatus(ThreadContext::Suspended);
+ tc = thread->getTC();
+ threadContexts.push_back(tc);
+ delete thread->kernelStats;
+ thread->kernelStats = NULL;
+#endif
+}
+
+void
+CheckerCPU::setIcachePort(Port *icache_port)
+{
+ icachePort = icache_port;
+}
+
+void
+CheckerCPU::setDcachePort(Port *dcache_port)
+{
+ dcachePort = dcache_port;
+}
+
+void
+CheckerCPU::serialize(ostream &os)
+{
+/*
+ BaseCPU::serialize(os);
+ SERIALIZE_SCALAR(inst);
+ nameOut(os, csprintf("%s.xc", name()));
+ thread->serialize(os);
+ cacheCompletionEvent.serialize(os);
+*/
+}
+
+void
+CheckerCPU::unserialize(Checkpoint *cp, const string &section)
+{
+/*
+ BaseCPU::unserialize(cp, section);
+ UNSERIALIZE_SCALAR(inst);
+ thread->unserialize(cp, csprintf("%s.xc", section));
+*/
+}
+
+Fault
+CheckerCPU::copySrcTranslate(Addr src)
+{
+ panic("Unimplemented!");
+}
+
+Fault
+CheckerCPU::copy(Addr dest)
+{
+ panic("Unimplemented!");
+}
+
+template <class T>
+Fault
+CheckerCPU::read(Addr addr, T &data, unsigned flags)
+{
+ // need to fill in CPU & thread IDs here
+ memReq = new Request();
+
+ memReq->setVirt(0, addr, sizeof(T), flags, thread->readPC());
+
+ // translate to physical address
+ translateDataReadReq(memReq);
+
+ Packet *pkt = new Packet(memReq, Packet::ReadReq, Packet::Broadcast);
+
+ pkt->dataStatic(&data);
+
+ if (!(memReq->getFlags() & UNCACHEABLE)) {
+ // Access memory to see if we have the same data
+ dcachePort->sendFunctional(pkt);
+ } else {
+ // Assume the data is correct if it's an uncached access
+ memcpy(&data, &unverifiedResult.integer, sizeof(T));
+ }
+
+ delete pkt;
+
+ return NoFault;
+}
+
+#ifndef DOXYGEN_SHOULD_SKIP_THIS
+
+template
+Fault
+CheckerCPU::read(Addr addr, uint64_t &data, unsigned flags);
+
+template
+Fault
+CheckerCPU::read(Addr addr, uint32_t &data, unsigned flags);
+
+template
+Fault
+CheckerCPU::read(Addr addr, uint16_t &data, unsigned flags);
+
+template
+Fault
+CheckerCPU::read(Addr addr, uint8_t &data, unsigned flags);
+
+#endif //DOXYGEN_SHOULD_SKIP_THIS
+
+template<>
+Fault
+CheckerCPU::read(Addr addr, double &data, unsigned flags)
+{
+ return read(addr, *(uint64_t*)&data, flags);
+}
+
+template<>
+Fault
+CheckerCPU::read(Addr addr, float &data, unsigned flags)
+{
+ return read(addr, *(uint32_t*)&data, flags);
+}
+
+template<>
+Fault
+CheckerCPU::read(Addr addr, int32_t &data, unsigned flags)
+{
+ return read(addr, (uint32_t&)data, flags);
+}
+
+template <class T>
+Fault
+CheckerCPU::write(T data, Addr addr, unsigned flags, uint64_t *res)
+{
+ // need to fill in CPU & thread IDs here
+ memReq = new Request();
+
+ memReq->setVirt(0, addr, sizeof(T), flags, thread->readPC());
+
+ // translate to physical address
+ thread->translateDataWriteReq(memReq);
+
+ // Can compare the write data and result only if it's cacheable,
+ // not a store conditional, or is a store conditional that
+ // succeeded.
+ // @todo: Verify that actual memory matches up with these values.
+ // Right now it only verifies that the instruction data is the
+ // same as what was in the request that got sent to memory; there
+ // is no verification that it is the same as what is in memory.
+ // This is because the LSQ would have to be snooped in the CPU to
+ // verify this data.
+ if (unverifiedReq &&
+ !(unverifiedReq->getFlags() & UNCACHEABLE) &&
+ (!(unverifiedReq->getFlags() & LOCKED) ||
+ ((unverifiedReq->getFlags() & LOCKED) &&
+ unverifiedReq->getScResult() == 1))) {
+ T inst_data;
+/*
+ // This code would work if the LSQ allowed for snooping.
+ Packet *pkt = new Packet(memReq, Packet::ReadReq, Packet::Broadcast);
+ pkt.dataStatic(&inst_data);
+
+ dcachePort->sendFunctional(pkt);
+
+ delete pkt;
+*/
+ memcpy(&inst_data, unverifiedMemData, sizeof(T));
+
+ if (data != inst_data) {
+ warn("%lli: Store value does not match value in memory! "
+ "Instruction: %#x, memory: %#x",
+ curTick, inst_data, data);
+ handleError();
+ }
+ }
+
+ // Assume the result was the same as the one passed in. This checker
+ // doesn't check if the SC should succeed or fail, it just checks the
+ // value.
+ if (res && unverifiedReq->scResultValid())
+ *res = unverifiedReq->getScResult();
+
+ return NoFault;
+}
+
+
+#ifndef DOXYGEN_SHOULD_SKIP_THIS
+template
+Fault
+CheckerCPU::write(uint64_t data, Addr addr, unsigned flags, uint64_t *res);
+
+template
+Fault
+CheckerCPU::write(uint32_t data, Addr addr, unsigned flags, uint64_t *res);
+
+template
+Fault
+CheckerCPU::write(uint16_t data, Addr addr, unsigned flags, uint64_t *res);
+
+template
+Fault
+CheckerCPU::write(uint8_t data, Addr addr, unsigned flags, uint64_t *res);
+
+#endif //DOXYGEN_SHOULD_SKIP_THIS
+
+template<>
+Fault
+CheckerCPU::write(double data, Addr addr, unsigned flags, uint64_t *res)
+{
+ return write(*(uint64_t*)&data, addr, flags, res);
+}
+
+template<>
+Fault
+CheckerCPU::write(float data, Addr addr, unsigned flags, uint64_t *res)
+{
+ return write(*(uint32_t*)&data, addr, flags, res);
+}
+
+template<>
+Fault
+CheckerCPU::write(int32_t data, Addr addr, unsigned flags, uint64_t *res)
+{
+ return write((uint32_t)data, addr, flags, res);
+}
+
+
+#if FULL_SYSTEM
+Addr
+CheckerCPU::dbg_vtophys(Addr addr)
+{
+ return vtophys(tc, addr);
+}
+#endif // FULL_SYSTEM
+
+bool
+CheckerCPU::translateInstReq(Request *req)
+{
+#if FULL_SYSTEM
+ return (thread->translateInstReq(req) == NoFault);
+#else
+ thread->translateInstReq(req);
+ return true;
+#endif
+}
+
+void
+CheckerCPU::translateDataReadReq(Request *req)
+{
+ thread->translateDataReadReq(req);
+
+ if (req->getVaddr() != unverifiedReq->getVaddr()) {
+ warn("%lli: Request virtual addresses do not match! Inst: %#x, "
+ "checker: %#x",
+ curTick, unverifiedReq->getVaddr(), req->getVaddr());
+ handleError();
+ }
+ req->setPaddr(unverifiedReq->getPaddr());
+
+ if (checkFlags(req)) {
+ warn("%lli: Request flags do not match! Inst: %#x, checker: %#x",
+ curTick, unverifiedReq->getFlags(), req->getFlags());
+ handleError();
+ }
+}
+
+void
+CheckerCPU::translateDataWriteReq(Request *req)
+{
+ thread->translateDataWriteReq(req);
+
+ if (req->getVaddr() != unverifiedReq->getVaddr()) {
+ warn("%lli: Request virtual addresses do not match! Inst: %#x, "
+ "checker: %#x",
+ curTick, unverifiedReq->getVaddr(), req->getVaddr());
+ handleError();
+ }
+ req->setPaddr(unverifiedReq->getPaddr());
+
+ if (checkFlags(req)) {
+ warn("%lli: Request flags do not match! Inst: %#x, checker: %#x",
+ curTick, unverifiedReq->getFlags(), req->getFlags());
+ handleError();
+ }
+}
+
+bool
+CheckerCPU::checkFlags(Request *req)
+{
+ // Remove any dynamic flags that don't have to do with the request itself.
+ unsigned flags = unverifiedReq->getFlags();
+ unsigned mask = LOCKED | PHYSICAL | VPTE | ALTMODE | UNCACHEABLE | NO_FAULT;
+ flags = flags & (mask);
+ if (flags == req->getFlags()) {
+ return false;
+ } else {
+ return true;
+ }
+}
+
+void
+CheckerCPU::dumpAndExit()
+{
+ warn("%lli: Checker PC:%#x, next PC:%#x",
+ curTick, thread->readPC(), thread->readNextPC());
+ panic("Checker found an error!");
+}
diff --git a/src/cpu/checker/cpu_impl.hh b/src/cpu/checker/cpu_impl.hh
index 5091c7c1a..137e1c46d 100644
--- a/src/cpu/checker/cpu_impl.hh
+++ b/src/cpu/checker/cpu_impl.hh
@@ -32,7 +32,6 @@
#include <string>
#include "base/refcnt.hh"
-#include "cpu/base.hh"
#include "cpu/base_dyn_inst.hh"
#include "cpu/checker/cpu.hh"
#include "cpu/simple_thread.hh"
@@ -44,374 +43,13 @@
#include "sim/stats.hh"
#if FULL_SYSTEM
-#include "sim/system.hh"
#include "arch/vtophys.hh"
-#include "kern/kernel_stats.hh"
#endif // FULL_SYSTEM
using namespace std;
//The CheckerCPU does alpha only
using namespace AlphaISA;
-void
-CheckerCPU::init()
-{
-}
-
-CheckerCPU::CheckerCPU(Params *p)
- : BaseCPU(p), thread(NULL), tc(NULL)
-{
- memReq = NULL;
-
- numInst = 0;
- startNumInst = 0;
- numLoad = 0;
- startNumLoad = 0;
- youngestSN = 0;
-
- changedPC = willChangePC = changedNextPC = false;
-
- exitOnError = p->exitOnError;
- warnOnlyOnLoadError = p->warnOnlyOnLoadError;
-#if FULL_SYSTEM
- itb = p->itb;
- dtb = p->dtb;
- systemPtr = NULL;
-#else
- process = p->process;
-#endif
-
- result.integer = 0;
-}
-
-CheckerCPU::~CheckerCPU()
-{
-}
-
-void
-CheckerCPU::setMemory(MemObject *mem)
-{
-#if !FULL_SYSTEM
- memPtr = mem;
- thread = new SimpleThread(this, /* thread_num */ 0, process,
- /* asid */ 0, mem);
-
- thread->setStatus(ThreadContext::Suspended);
- tc = thread->getTC();
- threadContexts.push_back(tc);
-#endif
-}
-
-void
-CheckerCPU::setSystem(System *system)
-{
-#if FULL_SYSTEM
- systemPtr = system;
-
- thread = new SimpleThread(this, 0, systemPtr, itb, dtb, false);
-
- thread->setStatus(ThreadContext::Suspended);
- tc = thread->getTC();
- threadContexts.push_back(tc);
- delete thread->kernelStats;
- thread->kernelStats = NULL;
-#endif
-}
-
-void
-CheckerCPU::setIcachePort(Port *icache_port)
-{
- icachePort = icache_port;
-}
-
-void
-CheckerCPU::setDcachePort(Port *dcache_port)
-{
- dcachePort = dcache_port;
-}
-
-void
-CheckerCPU::serialize(ostream &os)
-{
-/*
- BaseCPU::serialize(os);
- SERIALIZE_SCALAR(inst);
- nameOut(os, csprintf("%s.xc", name()));
- thread->serialize(os);
- cacheCompletionEvent.serialize(os);
-*/
-}
-
-void
-CheckerCPU::unserialize(Checkpoint *cp, const string &section)
-{
-/*
- BaseCPU::unserialize(cp, section);
- UNSERIALIZE_SCALAR(inst);
- thread->unserialize(cp, csprintf("%s.xc", section));
-*/
-}
-
-Fault
-CheckerCPU::copySrcTranslate(Addr src)
-{
- panic("Unimplemented!");
-}
-
-Fault
-CheckerCPU::copy(Addr dest)
-{
- panic("Unimplemented!");
-}
-
-template <class T>
-Fault
-CheckerCPU::read(Addr addr, T &data, unsigned flags)
-{
- // need to fill in CPU & thread IDs here
- memReq = new Request();
-
- memReq->setVirt(0, addr, sizeof(T), flags, thread->readPC());
-
- // translate to physical address
- translateDataReadReq(memReq);
-
- Packet *pkt = new Packet(memReq, Packet::ReadReq, Packet::Broadcast);
-
- pkt->dataStatic(&data);
-
- if (!(memReq->getFlags() & UNCACHEABLE)) {
- // Access memory to see if we have the same data
- dcachePort->sendFunctional(pkt);
- } else {
- // Assume the data is correct if it's an uncached access
- memcpy(&data, &unverifiedResult.integer, sizeof(T));
- }
-
- delete pkt;
-
- return NoFault;
-}
-
-#ifndef DOXYGEN_SHOULD_SKIP_THIS
-
-template
-Fault
-CheckerCPU::read(Addr addr, uint64_t &data, unsigned flags);
-
-template
-Fault
-CheckerCPU::read(Addr addr, uint32_t &data, unsigned flags);
-
-template
-Fault
-CheckerCPU::read(Addr addr, uint16_t &data, unsigned flags);
-
-template
-Fault
-CheckerCPU::read(Addr addr, uint8_t &data, unsigned flags);
-
-#endif //DOXYGEN_SHOULD_SKIP_THIS
-
-template<>
-Fault
-CheckerCPU::read(Addr addr, double &data, unsigned flags)
-{
- return read(addr, *(uint64_t*)&data, flags);
-}
-
-template<>
-Fault
-CheckerCPU::read(Addr addr, float &data, unsigned flags)
-{
- return read(addr, *(uint32_t*)&data, flags);
-}
-
-template<>
-Fault
-CheckerCPU::read(Addr addr, int32_t &data, unsigned flags)
-{
- return read(addr, (uint32_t&)data, flags);
-}
-
-template <class T>
-Fault
-CheckerCPU::write(T data, Addr addr, unsigned flags, uint64_t *res)
-{
- // need to fill in CPU & thread IDs here
- memReq = new Request();
-
- memReq->setVirt(0, addr, sizeof(T), flags, thread->readPC());
-
- // translate to physical address
- thread->translateDataWriteReq(memReq);
-
- // Can compare the write data and result only if it's cacheable,
- // not a store conditional, or is a store conditional that
- // succeeded.
- // @todo: Verify that actual memory matches up with these values.
- // Right now it only verifies that the instruction data is the
- // same as what was in the request that got sent to memory; there
- // is no verification that it is the same as what is in memory.
- // This is because the LSQ would have to be snooped in the CPU to
- // verify this data.
- if (unverifiedReq &&
- !(unverifiedReq->getFlags() & UNCACHEABLE) &&
- (!(unverifiedReq->getFlags() & LOCKED) ||
- ((unverifiedReq->getFlags() & LOCKED) &&
- unverifiedReq->getScResult() == 1))) {
- T inst_data;
-/*
- // This code would work if the LSQ allowed for snooping.
- Packet *pkt = new Packet(memReq, Packet::ReadReq, Packet::Broadcast);
- pkt.dataStatic(&inst_data);
-
- dcachePort->sendFunctional(pkt);
-
- delete pkt;
-*/
- memcpy(&inst_data, unverifiedMemData, sizeof(T));
-
- if (data != inst_data) {
- warn("%lli: Store value does not match value in memory! "
- "Instruction: %#x, memory: %#x",
- curTick, inst_data, data);
- handleError();
- }
- }
-
- // Assume the result was the same as the one passed in. This checker
- // doesn't check if the SC should succeed or fail, it just checks the
- // value.
- if (res && unverifiedReq->scResultValid())
- *res = unverifiedReq->getScResult();
-
- return NoFault;
-}
-
-
-#ifndef DOXYGEN_SHOULD_SKIP_THIS
-template
-Fault
-CheckerCPU::write(uint64_t data, Addr addr, unsigned flags, uint64_t *res);
-
-template
-Fault
-CheckerCPU::write(uint32_t data, Addr addr, unsigned flags, uint64_t *res);
-
-template
-Fault
-CheckerCPU::write(uint16_t data, Addr addr, unsigned flags, uint64_t *res);
-
-template
-Fault
-CheckerCPU::write(uint8_t data, Addr addr, unsigned flags, uint64_t *res);
-
-#endif //DOXYGEN_SHOULD_SKIP_THIS
-
-template<>
-Fault
-CheckerCPU::write(double data, Addr addr, unsigned flags, uint64_t *res)
-{
- return write(*(uint64_t*)&data, addr, flags, res);
-}
-
-template<>
-Fault
-CheckerCPU::write(float data, Addr addr, unsigned flags, uint64_t *res)
-{
- return write(*(uint32_t*)&data, addr, flags, res);
-}
-
-template<>
-Fault
-CheckerCPU::write(int32_t data, Addr addr, unsigned flags, uint64_t *res)
-{
- return write((uint32_t)data, addr, flags, res);
-}
-
-
-#if FULL_SYSTEM
-Addr
-CheckerCPU::dbg_vtophys(Addr addr)
-{
- return vtophys(tc, addr);
-}
-#endif // FULL_SYSTEM
-
-bool
-CheckerCPU::translateInstReq(Request *req)
-{
-#if FULL_SYSTEM
- return (thread->translateInstReq(req) == NoFault);
-#else
- thread->translateInstReq(req);
- return true;
-#endif
-}
-
-void
-CheckerCPU::translateDataReadReq(Request *req)
-{
- thread->translateDataReadReq(req);
-
- if (req->getVaddr() != unverifiedReq->getVaddr()) {
- warn("%lli: Request virtual addresses do not match! Inst: %#x, "
- "checker: %#x",
- curTick, unverifiedReq->getVaddr(), req->getVaddr());
- handleError();
- }
- req->setPaddr(unverifiedReq->getPaddr());
-
- if (checkFlags(req)) {
- warn("%lli: Request flags do not match! Inst: %#x, checker: %#x",
- curTick, unverifiedReq->getFlags(), req->getFlags());
- handleError();
- }
-}
-
-void
-CheckerCPU::translateDataWriteReq(Request *req)
-{
- thread->translateDataWriteReq(req);
-
- if (req->getVaddr() != unverifiedReq->getVaddr()) {
- warn("%lli: Request virtual addresses do not match! Inst: %#x, "
- "checker: %#x",
- curTick, unverifiedReq->getVaddr(), req->getVaddr());
- handleError();
- }
- req->setPaddr(unverifiedReq->getPaddr());
-
- if (checkFlags(req)) {
- warn("%lli: Request flags do not match! Inst: %#x, checker: %#x",
- curTick, unverifiedReq->getFlags(), req->getFlags());
- handleError();
- }
-}
-
-bool
-CheckerCPU::checkFlags(Request *req)
-{
- // Remove any dynamic flags that don't have to do with the request itself.
- unsigned flags = unverifiedReq->getFlags();
- unsigned mask = LOCKED | PHYSICAL | VPTE | ALTMODE | UNCACHEABLE | NO_FAULT;
- flags = flags & (mask);
- if (flags == req->getFlags()) {
- return false;
- } else {
- return true;
- }
-}
-
-void
-CheckerCPU::dumpAndExit()
-{
- warn("%lli: Checker PC:%#x, next PC:%#x",
- curTick, thread->readPC(), thread->readNextPC());
- panic("Checker found an error!");
-}
-
template <class DynInstPtr>
void
Checker<DynInstPtr>::verify(DynInstPtr &completed_inst)