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-rw-r--r--src/cpu/simple/atomic.cc18
-rw-r--r--src/cpu/simple/atomic.hh18
-rw-r--r--src/cpu/simple/base.cc52
-rw-r--r--src/cpu/simple/base.hh1
-rw-r--r--src/cpu/simple/timing.cc74
-rw-r--r--src/cpu/simple/timing.hh20
6 files changed, 115 insertions, 68 deletions
diff --git a/src/cpu/simple/atomic.cc b/src/cpu/simple/atomic.cc
index 87ecafd69..edba55b0d 100644
--- a/src/cpu/simple/atomic.cc
+++ b/src/cpu/simple/atomic.cc
@@ -32,7 +32,8 @@
#include "arch/utility.hh"
#include "cpu/exetrace.hh"
#include "cpu/simple/atomic.hh"
-#include "mem/packet_impl.hh"
+#include "mem/packet.hh"
+#include "mem/packet_access.hh"
#include "sim/builder.hh"
#include "sim/system.hh"
@@ -92,21 +93,21 @@ AtomicSimpleCPU::init()
}
bool
-AtomicSimpleCPU::CpuPort::recvTiming(Packet *pkt)
+AtomicSimpleCPU::CpuPort::recvTiming(PacketPtr pkt)
{
panic("AtomicSimpleCPU doesn't expect recvTiming callback!");
return true;
}
Tick
-AtomicSimpleCPU::CpuPort::recvAtomic(Packet *pkt)
+AtomicSimpleCPU::CpuPort::recvAtomic(PacketPtr pkt)
{
- panic("AtomicSimpleCPU doesn't expect recvAtomic callback!");
+ //Snooping a coherence request, just return
return curTick;
}
void
-AtomicSimpleCPU::CpuPort::recvFunctional(Packet *pkt)
+AtomicSimpleCPU::CpuPort::recvFunctional(PacketPtr pkt)
{
//No internal storage to update, just return
return;
@@ -262,7 +263,7 @@ AtomicSimpleCPU::read(Addr addr, T &data, unsigned flags)
{
// use the CPU's statically allocated read request and packet objects
Request *req = data_read_req;
- Packet *pkt = data_read_pkt;
+ PacketPtr pkt = data_read_pkt;
req->setVirt(0, addr, sizeof(T), flags, thread->readPC());
@@ -344,7 +345,7 @@ AtomicSimpleCPU::write(T data, Addr addr, unsigned flags, uint64_t *res)
{
// use the CPU's statically allocated write request and packet objects
Request *req = data_write_req;
- Packet *pkt = data_write_pkt;
+ PacketPtr pkt = data_write_pkt;
req->setVirt(0, addr, sizeof(T), flags, thread->readPC());
@@ -450,7 +451,8 @@ AtomicSimpleCPU::tick()
for (int i = 0; i < width; ++i) {
numCycles++;
- checkForInterrupts();
+ if (!curStaticInst || !curStaticInst->isDelayedCommit())
+ checkForInterrupts();
Fault fault = setupFetchRequest(ifetch_req);
diff --git a/src/cpu/simple/atomic.hh b/src/cpu/simple/atomic.hh
index 52afd76ef..0edca9369 100644
--- a/src/cpu/simple/atomic.hh
+++ b/src/cpu/simple/atomic.hh
@@ -92,11 +92,11 @@ class AtomicSimpleCPU : public BaseSimpleCPU
protected:
- virtual bool recvTiming(Packet *pkt);
+ virtual bool recvTiming(PacketPtr pkt);
- virtual Tick recvAtomic(Packet *pkt);
+ virtual Tick recvAtomic(PacketPtr pkt);
- virtual void recvFunctional(Packet *pkt);
+ virtual void recvFunctional(PacketPtr pkt);
virtual void recvStatusChange(Status status);
@@ -110,12 +110,12 @@ class AtomicSimpleCPU : public BaseSimpleCPU
CpuPort icachePort;
CpuPort dcachePort;
- Request *ifetch_req;
- Packet *ifetch_pkt;
- Request *data_read_req;
- Packet *data_read_pkt;
- Request *data_write_req;
- Packet *data_write_pkt;
+ Request *ifetch_req;
+ PacketPtr ifetch_pkt;
+ Request *data_read_req;
+ PacketPtr data_read_pkt;
+ Request *data_write_req;
+ PacketPtr data_write_pkt;
bool dcache_access;
Tick dcache_latency;
diff --git a/src/cpu/simple/base.cc b/src/cpu/simple/base.cc
index 522fe79aa..cbb3980cb 100644
--- a/src/cpu/simple/base.cc
+++ b/src/cpu/simple/base.cc
@@ -47,7 +47,7 @@
#include "cpu/static_inst.hh"
#include "cpu/thread_context.hh"
#include "kern/kernel_stats.hh"
-#include "mem/packet_impl.hh"
+#include "mem/packet.hh"
#include "sim/builder.hh"
#include "sim/byteswap.hh"
#include "sim/debug.hh"
@@ -396,7 +396,20 @@ BaseSimpleCPU::preExecute()
// decode the instruction
inst = gtoh(inst);
- curStaticInst = StaticInst::decode(makeExtMI(inst, thread->readPC()));
+ //If we're not in the middle of a macro instruction
+ if (!curMacroStaticInst) {
+ StaticInstPtr instPtr = StaticInst::decode(makeExtMI(inst, thread->getTC()));
+ if (instPtr->isMacroOp()) {
+ curMacroStaticInst = instPtr;
+ curStaticInst = curMacroStaticInst->fetchMicroOp(0);
+ } else {
+ curStaticInst = instPtr;
+ }
+ } else {
+ //Read the next micro op from the macro op
+ curStaticInst = curMacroStaticInst->fetchMicroOp(thread->readMicroPC());
+ }
+
traceData = Trace::getInstRecord(curTick, tc, curStaticInst,
thread->readPC());
@@ -446,18 +459,35 @@ BaseSimpleCPU::advancePC(Fault fault)
{
if (fault != NoFault) {
fault->invoke(tc);
- }
- else {
- // go to the next instruction
- thread->setPC(thread->readNextPC());
+ } else {
+ //If we're at the last micro op for this instruction
+ if (curStaticInst->isLastMicroOp()) {
+ //We should be working with a macro op
+ assert(curMacroStaticInst);
+ //Close out this macro op, and clean up the
+ //microcode state
+ curMacroStaticInst = StaticInst::nullStaticInstPtr;
+ thread->setMicroPC(0);
+ thread->setNextMicroPC(1);
+ }
+ //If we're still in a macro op
+ if (curMacroStaticInst) {
+ //Advance the micro pc
+ thread->setMicroPC(thread->readNextMicroPC());
+ //Advance the "next" micro pc. Note that there are no delay
+ //slots, and micro ops are "word" addressed.
+ thread->setNextMicroPC(thread->readNextMicroPC() + 1);
+ } else {
+ // go to the next instruction
+ thread->setPC(thread->readNextPC());
#if ISA_HAS_DELAY_SLOT
- thread->setNextPC(thread->readNextNPC());
- thread->setNextNPC(thread->readNextNPC() + sizeof(MachInst));
- assert(thread->readNextPC() != thread->readNextNPC());
+ thread->setNextPC(thread->readNextNPC());
+ thread->setNextNPC(thread->readNextNPC() + sizeof(MachInst));
+ assert(thread->readNextPC() != thread->readNextNPC());
#else
- thread->setNextPC(thread->readNextPC() + sizeof(MachInst));
+ thread->setNextPC(thread->readNextPC() + sizeof(MachInst));
#endif
-
+ }
}
#if FULL_SYSTEM
diff --git a/src/cpu/simple/base.hh b/src/cpu/simple/base.hh
index 57cfa3c2c..af6b6f835 100644
--- a/src/cpu/simple/base.hh
+++ b/src/cpu/simple/base.hh
@@ -128,6 +128,7 @@ class BaseSimpleCPU : public BaseCPU
TheISA::IntReg dataReg;
StaticInstPtr curStaticInst;
+ StaticInstPtr curMacroStaticInst;
void checkForInterrupts();
Fault setupFetchRequest(Request *req);
diff --git a/src/cpu/simple/timing.cc b/src/cpu/simple/timing.cc
index ad5c0e5d6..fe6775ea4 100644
--- a/src/cpu/simple/timing.cc
+++ b/src/cpu/simple/timing.cc
@@ -32,7 +32,8 @@
#include "arch/utility.hh"
#include "cpu/exetrace.hh"
#include "cpu/simple/timing.hh"
-#include "mem/packet_impl.hh"
+#include "mem/packet.hh"
+#include "mem/packet_access.hh"
#include "sim/builder.hh"
#include "sim/system.hh"
@@ -65,14 +66,14 @@ TimingSimpleCPU::init()
}
Tick
-TimingSimpleCPU::CpuPort::recvAtomic(Packet *pkt)
+TimingSimpleCPU::CpuPort::recvAtomic(PacketPtr pkt)
{
panic("TimingSimpleCPU doesn't expect recvAtomic callback!");
return curTick;
}
void
-TimingSimpleCPU::CpuPort::recvFunctional(Packet *pkt)
+TimingSimpleCPU::CpuPort::recvFunctional(PacketPtr pkt)
{
//No internal storage to update, jusst return
return;
@@ -89,7 +90,7 @@ TimingSimpleCPU::CpuPort::recvStatusChange(Status status)
void
-TimingSimpleCPU::CpuPort::TickEvent::schedule(Packet *_pkt, Tick t)
+TimingSimpleCPU::CpuPort::TickEvent::schedule(PacketPtr _pkt, Tick t)
{
pkt = _pkt;
Event::schedule(t);
@@ -268,7 +269,7 @@ TimingSimpleCPU::read(Addr addr, T &data, unsigned flags)
// Now do the access.
if (fault == NoFault) {
- Packet *pkt =
+ PacketPtr pkt =
new Packet(req, Packet::ReadReq, Packet::Broadcast);
pkt->dataDynamic<T>(new T);
@@ -426,7 +427,8 @@ TimingSimpleCPU::write(int32_t data, Addr addr, unsigned flags, uint64_t *res)
void
TimingSimpleCPU::fetch()
{
- checkForInterrupts();
+ if (!curStaticInst || !curStaticInst->isDelayedCommit())
+ checkForInterrupts();
Request *ifetch_req = new Request();
ifetch_req->setThreadContext(cpu_id, /* thread ID */ 0);
@@ -470,7 +472,7 @@ TimingSimpleCPU::advanceInst(Fault fault)
void
-TimingSimpleCPU::completeIfetch(Packet *pkt)
+TimingSimpleCPU::completeIfetch(PacketPtr pkt)
{
// received a response from the icache: execute the received
// instruction
@@ -526,19 +528,25 @@ TimingSimpleCPU::IcachePort::ITickEvent::process()
}
bool
-TimingSimpleCPU::IcachePort::recvTiming(Packet *pkt)
+TimingSimpleCPU::IcachePort::recvTiming(PacketPtr pkt)
{
- // delay processing of returned data until next CPU clock edge
- Tick time = pkt->req->getTime();
- while (time < curTick)
- time += lat;
+ if (pkt->isResponse()) {
+ // delay processing of returned data until next CPU clock edge
+ Tick time = pkt->req->getTime();
+ while (time < curTick)
+ time += lat;
- if (time == curTick)
- cpu->completeIfetch(pkt);
- else
- tickEvent.schedule(pkt, time);
+ if (time == curTick)
+ cpu->completeIfetch(pkt);
+ else
+ tickEvent.schedule(pkt, time);
- return true;
+ return true;
+ }
+ else {
+ //Snooping a Coherence Request, do nothing
+ return true;
+ }
}
void
@@ -548,7 +556,7 @@ TimingSimpleCPU::IcachePort::recvRetry()
// waiting to transmit
assert(cpu->ifetch_pkt != NULL);
assert(cpu->_status == IcacheRetry);
- Packet *tmp = cpu->ifetch_pkt;
+ PacketPtr tmp = cpu->ifetch_pkt;
if (sendTiming(tmp)) {
cpu->_status = IcacheWaitResponse;
cpu->ifetch_pkt = NULL;
@@ -556,7 +564,7 @@ TimingSimpleCPU::IcachePort::recvRetry()
}
void
-TimingSimpleCPU::completeDataAccess(Packet *pkt)
+TimingSimpleCPU::completeDataAccess(PacketPtr pkt)
{
// received a response from the dcache: complete the load or store
// instruction
@@ -598,19 +606,25 @@ TimingSimpleCPU::completeDrain()
}
bool
-TimingSimpleCPU::DcachePort::recvTiming(Packet *pkt)
+TimingSimpleCPU::DcachePort::recvTiming(PacketPtr pkt)
{
- // delay processing of returned data until next CPU clock edge
- Tick time = pkt->req->getTime();
- while (time < curTick)
- time += lat;
+ if (pkt->isResponse()) {
+ // delay processing of returned data until next CPU clock edge
+ Tick time = pkt->req->getTime();
+ while (time < curTick)
+ time += lat;
- if (time == curTick)
- cpu->completeDataAccess(pkt);
- else
- tickEvent.schedule(pkt, time);
+ if (time == curTick)
+ cpu->completeDataAccess(pkt);
+ else
+ tickEvent.schedule(pkt, time);
- return true;
+ return true;
+ }
+ else {
+ //Snooping a coherence req, do nothing
+ return true;
+ }
}
void
@@ -626,7 +640,7 @@ TimingSimpleCPU::DcachePort::recvRetry()
// waiting to transmit
assert(cpu->dcache_pkt != NULL);
assert(cpu->_status == DcacheRetry);
- Packet *tmp = cpu->dcache_pkt;
+ PacketPtr tmp = cpu->dcache_pkt;
if (sendTiming(tmp)) {
cpu->_status = DcacheWaitResponse;
// memory system takes ownership of packet
diff --git a/src/cpu/simple/timing.hh b/src/cpu/simple/timing.hh
index 988ddeded..577e13e40 100644
--- a/src/cpu/simple/timing.hh
+++ b/src/cpu/simple/timing.hh
@@ -84,9 +84,9 @@ class TimingSimpleCPU : public BaseSimpleCPU
protected:
- virtual Tick recvAtomic(Packet *pkt);
+ virtual Tick recvAtomic(PacketPtr pkt);
- virtual void recvFunctional(Packet *pkt);
+ virtual void recvFunctional(PacketPtr pkt);
virtual void recvStatusChange(Status status);
@@ -96,13 +96,13 @@ class TimingSimpleCPU : public BaseSimpleCPU
struct TickEvent : public Event
{
- Packet *pkt;
+ PacketPtr pkt;
TimingSimpleCPU *cpu;
TickEvent(TimingSimpleCPU *_cpu)
:Event(&mainEventQueue), cpu(_cpu) {}
const char *description() { return "Timing CPU clock event"; }
- void schedule(Packet *_pkt, Tick t);
+ void schedule(PacketPtr _pkt, Tick t);
};
};
@@ -117,7 +117,7 @@ class TimingSimpleCPU : public BaseSimpleCPU
protected:
- virtual bool recvTiming(Packet *pkt);
+ virtual bool recvTiming(PacketPtr pkt);
virtual void recvRetry();
@@ -144,7 +144,7 @@ class TimingSimpleCPU : public BaseSimpleCPU
protected:
- virtual bool recvTiming(Packet *pkt);
+ virtual bool recvTiming(PacketPtr pkt);
virtual void recvRetry();
@@ -163,8 +163,8 @@ class TimingSimpleCPU : public BaseSimpleCPU
IcachePort icachePort;
DcachePort dcachePort;
- Packet *ifetch_pkt;
- Packet *dcache_pkt;
+ PacketPtr ifetch_pkt;
+ PacketPtr dcache_pkt;
int cpu_id;
Tick previousTick;
@@ -192,8 +192,8 @@ class TimingSimpleCPU : public BaseSimpleCPU
Fault write(T data, Addr addr, unsigned flags, uint64_t *res);
void fetch();
- void completeIfetch(Packet *);
- void completeDataAccess(Packet *);
+ void completeIfetch(PacketPtr );
+ void completeDataAccess(PacketPtr );
void advanceInst(Fault fault);
private:
void completeDrain();
generated by cgit v1.2.3 (git 2.25.1) at 2024-07-15 20:52:29 +0000