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-rw-r--r--src/cpu/simple/atomic.cc74
-rw-r--r--src/cpu/simple/atomic.hh6
-rw-r--r--src/cpu/simple/base.cc147
-rw-r--r--src/cpu/simple/base.hh77
-rw-r--r--src/cpu/simple/timing.cc64
-rw-r--r--src/cpu/simple/timing.hh6
6 files changed, 178 insertions, 196 deletions
diff --git a/src/cpu/simple/atomic.cc b/src/cpu/simple/atomic.cc
index 3cad6e43f..071193f02 100644
--- a/src/cpu/simple/atomic.cc
+++ b/src/cpu/simple/atomic.cc
@@ -24,6 +24,8 @@
* 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: Steve Reinhardt
*/
#include "arch/utility.hh"
@@ -68,11 +70,11 @@ AtomicSimpleCPU::init()
BaseCPU::init();
#if FULL_SYSTEM
- for (int i = 0; i < execContexts.size(); ++i) {
- ExecContext *xc = execContexts[i];
+ for (int i = 0; i < threadContexts.size(); ++i) {
+ ThreadContext *tc = threadContexts[i];
// initialize CPU, including PC
- TheISA::initCPU(xc, xc->readCpuId());
+ TheISA::initCPU(tc, tc->readCpuId());
}
#endif
}
@@ -106,11 +108,10 @@ AtomicSimpleCPU::CpuPort::recvStatusChange(Status status)
panic("AtomicSimpleCPU doesn't expect recvStatusChange callback!");
}
-Packet *
+void
AtomicSimpleCPU::CpuPort::recvRetry()
{
panic("AtomicSimpleCPU doesn't expect recvRetry callback!");
- return NULL;
}
@@ -121,26 +122,17 @@ AtomicSimpleCPU::AtomicSimpleCPU(Params *p)
{
_status = Idle;
- ifetch_req = new Request(true);
- ifetch_req->setAsid(0);
- // @todo fix me and get the real cpu iD!!!
- ifetch_req->setCpuNum(0);
- ifetch_req->setSize(sizeof(MachInst));
+ // @todo fix me and get the real cpu id & thread number!!!
+ ifetch_req = new Request();
ifetch_pkt = new Packet(ifetch_req, Packet::ReadReq, Packet::Broadcast);
ifetch_pkt->dataStatic(&inst);
- data_read_req = new Request(true);
- // @todo fix me and get the real cpu iD!!!
- data_read_req->setCpuNum(0);
- data_read_req->setAsid(0);
+ data_read_req = new Request();
data_read_pkt = new Packet(data_read_req, Packet::ReadReq,
Packet::Broadcast);
data_read_pkt->dataStatic(&dataReg);
- data_write_req = new Request(true);
- // @todo fix me and get the real cpu iD!!!
- data_write_req->setCpuNum(0);
- data_write_req->setAsid(0);
+ data_write_req = new Request();
data_write_pkt = new Packet(data_write_req, Packet::WriteReq,
Packet::Broadcast);
}
@@ -187,11 +179,11 @@ AtomicSimpleCPU::takeOverFrom(BaseCPU *oldCPU)
assert(!tickEvent.scheduled());
- // if any of this CPU's ExecContexts are active, mark the CPU as
+ // if any of this CPU's ThreadContexts are active, mark the CPU as
// running and schedule its tick event.
- for (int i = 0; i < execContexts.size(); ++i) {
- ExecContext *xc = execContexts[i];
- if (xc->status() == ExecContext::Active && _status != Running) {
+ for (int i = 0; i < threadContexts.size(); ++i) {
+ ThreadContext *tc = threadContexts[i];
+ if (tc->status() == ThreadContext::Active && _status != Running) {
_status = Running;
tickEvent.schedule(curTick);
break;
@@ -204,7 +196,7 @@ void
AtomicSimpleCPU::activateContext(int thread_num, int delay)
{
assert(thread_num == 0);
- assert(cpuXC);
+ assert(thread);
assert(_status == Idle);
assert(!tickEvent.scheduled());
@@ -219,7 +211,7 @@ void
AtomicSimpleCPU::suspendContext(int thread_num)
{
assert(thread_num == 0);
- assert(cpuXC);
+ assert(thread);
assert(_status == Running);
@@ -237,24 +229,20 @@ template <class T>
Fault
AtomicSimpleCPU::read(Addr addr, T &data, unsigned flags)
{
- data_read_req->setVaddr(addr);
- data_read_req->setSize(sizeof(T));
- data_read_req->setFlags(flags);
- data_read_req->setTime(curTick);
+ data_read_req->setVirt(0, addr, sizeof(T), flags, thread->readPC());
if (traceData) {
traceData->setAddr(addr);
}
// translate to physical address
- Fault fault = cpuXC->translateDataReadReq(data_read_req);
+ Fault fault = thread->translateDataReadReq(data_read_req);
// Now do the access.
if (fault == NoFault) {
- data_read_pkt->reset();
data_read_pkt->reinitFromRequest();
- dcache_complete = dcachePort.sendAtomic(data_read_pkt);
+ dcache_latency = dcachePort.sendAtomic(data_read_pkt);
dcache_access = true;
assert(data_read_pkt->result == Packet::Success);
@@ -316,26 +304,22 @@ template <class T>
Fault
AtomicSimpleCPU::write(T data, Addr addr, unsigned flags, uint64_t *res)
{
- data_write_req->setVaddr(addr);
- data_write_req->setTime(curTick);
- data_write_req->setSize(sizeof(T));
- data_write_req->setFlags(flags);
+ data_write_req->setVirt(0, addr, sizeof(T), flags, thread->readPC());
if (traceData) {
traceData->setAddr(addr);
}
// translate to physical address
- Fault fault = cpuXC->translateDataWriteReq(data_write_req);
+ Fault fault = thread->translateDataWriteReq(data_write_req);
// Now do the access.
if (fault == NoFault) {
- data_write_pkt->reset();
data = htog(data);
- data_write_pkt->dataStatic(&data);
data_write_pkt->reinitFromRequest();
+ data_write_pkt->dataStatic(&data);
- dcache_complete = dcachePort.sendAtomic(data_write_pkt);
+ dcache_latency = dcachePort.sendAtomic(data_write_pkt);
dcache_access = true;
assert(data_write_pkt->result == Packet::Success);
@@ -411,12 +395,12 @@ AtomicSimpleCPU::tick()
checkForInterrupts();
- ifetch_req->resetMin();
- ifetch_pkt->reset();
- Fault fault = setupFetchPacket(ifetch_pkt);
+ Fault fault = setupFetchRequest(ifetch_req);
if (fault == NoFault) {
- Tick icache_complete = icachePort.sendAtomic(ifetch_pkt);
+ ifetch_pkt->reinitFromRequest();
+
+ Tick icache_latency = icachePort.sendAtomic(ifetch_pkt);
// ifetch_req is initialized to read the instruction directly
// into the CPU object's inst field.
@@ -431,9 +415,9 @@ AtomicSimpleCPU::tick()
// cycle time. If not, the next tick event may get
// scheduled at a non-integer multiple of the CPU
// cycle time.
- Tick icache_stall = icache_complete - curTick - cycles(1);
+ Tick icache_stall = icache_latency - cycles(1);
Tick dcache_stall =
- dcache_access ? dcache_complete - curTick - cycles(1) : 0;
+ dcache_access ? dcache_latency - cycles(1) : 0;
latency += icache_stall + dcache_stall;
}
diff --git a/src/cpu/simple/atomic.hh b/src/cpu/simple/atomic.hh
index ab3a3e8ef..7f4956da9 100644
--- a/src/cpu/simple/atomic.hh
+++ b/src/cpu/simple/atomic.hh
@@ -24,6 +24,8 @@
* 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: Steve Reinhardt
*/
#ifndef __CPU_SIMPLE_ATOMIC_HH__
@@ -98,7 +100,7 @@ class AtomicSimpleCPU : public BaseSimpleCPU
virtual void recvStatusChange(Status status);
- virtual Packet *recvRetry();
+ virtual void recvRetry();
virtual void getDeviceAddressRanges(AddrRangeList &resp,
AddrRangeList &snoop)
@@ -116,7 +118,7 @@ class AtomicSimpleCPU : public BaseSimpleCPU
Packet *data_write_pkt;
bool dcache_access;
- Tick dcache_complete;
+ Tick dcache_latency;
public:
diff --git a/src/cpu/simple/base.cc b/src/cpu/simple/base.cc
index 18f170449..d94b0e079 100644
--- a/src/cpu/simple/base.cc
+++ b/src/cpu/simple/base.cc
@@ -24,6 +24,8 @@
* 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: Steve Reinhardt
*/
#include "arch/utility.hh"
@@ -36,18 +38,18 @@
#include "base/stats/events.hh"
#include "base/trace.hh"
#include "cpu/base.hh"
-#include "cpu/cpu_exec_context.hh"
-#include "cpu/exec_context.hh"
#include "cpu/exetrace.hh"
#include "cpu/profile.hh"
#include "cpu/sampler/sampler.hh"
#include "cpu/simple/base.hh"
+#include "cpu/simple_thread.hh"
#include "cpu/smt.hh"
#include "cpu/static_inst.hh"
+#include "cpu/thread_context.hh"
#include "kern/kernel_stats.hh"
#include "mem/packet_impl.hh"
-#include "sim/byteswap.hh"
#include "sim/builder.hh"
+#include "sim/byteswap.hh"
#include "sim/debug.hh"
#include "sim/host.hh"
#include "sim/sim_events.hh"
@@ -68,16 +70,18 @@ using namespace std;
using namespace TheISA;
BaseSimpleCPU::BaseSimpleCPU(Params *p)
- : BaseCPU(p), mem(p->mem), cpuXC(NULL)
+ : BaseCPU(p), mem(p->mem), thread(NULL)
{
#if FULL_SYSTEM
- cpuXC = new CPUExecContext(this, 0, p->system, p->itb, p->dtb);
+ thread = new SimpleThread(this, 0, p->system, p->itb, p->dtb);
#else
- cpuXC = new CPUExecContext(this, /* thread_num */ 0, p->process,
+ thread = new SimpleThread(this, /* thread_num */ 0, p->process,
/* asid */ 0, mem);
#endif // !FULL_SYSTEM
- xcProxy = cpuXC->getProxy();
+ thread->setStatus(ThreadContext::Suspended);
+
+ tc = thread->getTC();
numInst = 0;
startNumInst = 0;
@@ -86,7 +90,7 @@ BaseSimpleCPU::BaseSimpleCPU(Params *p)
lastIcacheStall = 0;
lastDcacheStall = 0;
- execContexts.push_back(xcProxy);
+ threadContexts.push_back(tc);
}
BaseSimpleCPU::~BaseSimpleCPU()
@@ -176,7 +180,7 @@ BaseSimpleCPU::serialize(ostream &os)
BaseCPU::serialize(os);
SERIALIZE_SCALAR(inst);
nameOut(os, csprintf("%s.xc", name()));
- cpuXC->serialize(os);
+ thread->serialize(os);
}
void
@@ -184,7 +188,7 @@ BaseSimpleCPU::unserialize(Checkpoint *cp, const string &section)
{
BaseCPU::unserialize(cp, section);
UNSERIALIZE_SCALAR(inst);
- cpuXC->unserialize(cp, csprintf("%s.xc", section));
+ thread->unserialize(cp, csprintf("%s.xc", section));
}
void
@@ -213,16 +217,16 @@ BaseSimpleCPU::copySrcTranslate(Addr src)
memReq->reset(src & ~(blk_size - 1), blk_size);
// translate to physical address
- Fault fault = cpuXC->translateDataReadReq(req);
+ Fault fault = thread->translateDataReadReq(req);
if (fault == NoFault) {
- cpuXC->copySrcAddr = src;
- cpuXC->copySrcPhysAddr = memReq->paddr + offset;
+ thread->copySrcAddr = src;
+ thread->copySrcPhysAddr = memReq->paddr + offset;
} else {
assert(!fault->isAlignmentFault());
- cpuXC->copySrcAddr = 0;
- cpuXC->copySrcPhysAddr = 0;
+ thread->copySrcAddr = 0;
+ thread->copySrcPhysAddr = 0;
}
return fault;
#else
@@ -239,7 +243,7 @@ BaseSimpleCPU::copy(Addr dest)
// Only support block sizes of 64 atm.
assert(blk_size == 64);
uint8_t data[blk_size];
- //assert(cpuXC->copySrcAddr);
+ //assert(thread->copySrcAddr);
int offset = dest & (blk_size - 1);
// Make sure block doesn't span page
@@ -252,19 +256,19 @@ BaseSimpleCPU::copy(Addr dest)
memReq->reset(dest & ~(blk_size -1), blk_size);
// translate to physical address
- Fault fault = cpuXC->translateDataWriteReq(req);
+ Fault fault = thread->translateDataWriteReq(req);
if (fault == NoFault) {
Addr dest_addr = memReq->paddr + offset;
// Need to read straight from memory since we have more than 8 bytes.
- memReq->paddr = cpuXC->copySrcPhysAddr;
- cpuXC->mem->read(memReq, data);
+ memReq->paddr = thread->copySrcPhysAddr;
+ thread->mem->read(memReq, data);
memReq->paddr = dest_addr;
- cpuXC->mem->write(memReq, data);
+ thread->mem->write(memReq, data);
if (dcacheInterface) {
memReq->cmd = Copy;
memReq->completionEvent = NULL;
- memReq->paddr = cpuXC->copySrcPhysAddr;
+ memReq->paddr = thread->copySrcPhysAddr;
memReq->dest = dest_addr;
memReq->size = 64;
memReq->time = curTick;
@@ -286,7 +290,7 @@ BaseSimpleCPU::copy(Addr dest)
Addr
BaseSimpleCPU::dbg_vtophys(Addr addr)
{
- return vtophys(xcProxy, addr);
+ return vtophys(tc, addr);
}
#endif // FULL_SYSTEM
@@ -296,9 +300,9 @@ BaseSimpleCPU::post_interrupt(int int_num, int index)
{
BaseCPU::post_interrupt(int_num, index);
- if (cpuXC->status() == ExecContext::Suspended) {
+ if (thread->status() == ThreadContext::Suspended) {
DPRINTF(IPI,"Suspended Processor awoke\n");
- cpuXC->activate();
+ thread->activate();
}
}
#endif // FULL_SYSTEM
@@ -307,15 +311,15 @@ void
BaseSimpleCPU::checkForInterrupts()
{
#if FULL_SYSTEM
- if (checkInterrupts && check_interrupts() && !cpuXC->inPalMode()) {
+ if (checkInterrupts && check_interrupts() && !thread->inPalMode()) {
int ipl = 0;
int summary = 0;
checkInterrupts = false;
- if (cpuXC->readMiscReg(IPR_SIRR)) {
+ if (thread->readMiscReg(IPR_SIRR)) {
for (int i = INTLEVEL_SOFTWARE_MIN;
i < INTLEVEL_SOFTWARE_MAX; i++) {
- if (cpuXC->readMiscReg(IPR_SIRR) & (ULL(1) << i)) {
+ if (thread->readMiscReg(IPR_SIRR) & (ULL(1) << i)) {
// See table 4-19 of 21164 hardware reference
ipl = (i - INTLEVEL_SOFTWARE_MIN) + 1;
summary |= (ULL(1) << i);
@@ -323,7 +327,7 @@ BaseSimpleCPU::checkForInterrupts()
}
}
- uint64_t interrupts = cpuXC->cpu->intr_status();
+ uint64_t interrupts = thread->cpu->intr_status();
for (int i = INTLEVEL_EXTERNAL_MIN;
i < INTLEVEL_EXTERNAL_MAX; i++) {
if (interrupts & (ULL(1) << i)) {
@@ -333,17 +337,17 @@ BaseSimpleCPU::checkForInterrupts()
}
}
- if (cpuXC->readMiscReg(IPR_ASTRR))
+ if (thread->readMiscReg(IPR_ASTRR))
panic("asynchronous traps not implemented\n");
- if (ipl && ipl > cpuXC->readMiscReg(IPR_IPLR)) {
- cpuXC->setMiscReg(IPR_ISR, summary);
- cpuXC->setMiscReg(IPR_INTID, ipl);
+ if (ipl && ipl > thread->readMiscReg(IPR_IPLR)) {
+ thread->setMiscReg(IPR_ISR, summary);
+ thread->setMiscReg(IPR_INTID, ipl);
- Fault(new InterruptFault)->invoke(xcProxy);
+ Fault(new InterruptFault)->invoke(tc);
DPRINTF(Flow, "Interrupt! IPLR=%d ipl=%d summary=%x\n",
- cpuXC->readMiscReg(IPR_IPLR), ipl, summary);
+ thread->readMiscReg(IPR_IPLR), ipl, summary);
}
}
#endif
@@ -351,29 +355,17 @@ BaseSimpleCPU::checkForInterrupts()
Fault
-BaseSimpleCPU::setupFetchPacket(Packet *ifetch_pkt)
+BaseSimpleCPU::setupFetchRequest(Request *req)
{
- // Try to fetch an instruction
-
// set up memory request for instruction fetch
+ DPRINTF(Fetch,"Fetch: PC:%08p NPC:%08p NNPC:%08p\n",thread->readPC(),
+ thread->readNextPC(),thread->readNextNPC());
- DPRINTF(Fetch,"Fetch: PC:%08p NPC:%08p NNPC:%08p\n",cpuXC->readPC(),
- cpuXC->readNextPC(),cpuXC->readNextNPC());
-
- Request *ifetch_req = ifetch_pkt->req;
- ifetch_req->setVaddr(cpuXC->readPC() & ~3);
- ifetch_req->setTime(curTick);
-#if FULL_SYSTEM
- ifetch_req->setFlags((cpuXC->readPC() & 1) ? PHYSICAL : 0);
-#else
- ifetch_req->setFlags(0);
-#endif
-
- Fault fault = cpuXC->translateInstReq(ifetch_req);
+ req->setVirt(0, thread->readPC() & ~3, sizeof(MachInst),
+ (FULL_SYSTEM && (thread->readPC() & 1)) ? PHYSICAL : 0,
+ thread->readPC());
- if (fault == NoFault) {
- ifetch_pkt->reinitFromRequest();
- }
+ Fault fault = thread->translateInstReq(req);
return fault;
}
@@ -383,33 +375,33 @@ void
BaseSimpleCPU::preExecute()
{
// maintain $r0 semantics
- cpuXC->setIntReg(ZeroReg, 0);
+ thread->setIntReg(ZeroReg, 0);
#if THE_ISA == ALPHA_ISA
- cpuXC->setFloatReg(ZeroReg, 0.0);
+ thread->setFloatReg(ZeroReg, 0.0);
#endif // ALPHA_ISA
// keep an instruction count
numInst++;
numInsts++;
- cpuXC->func_exe_inst++;
+ thread->funcExeInst++;
// check for instruction-count-based events
comInstEventQueue[0]->serviceEvents(numInst);
// decode the instruction
inst = gtoh(inst);
- curStaticInst = StaticInst::decode(makeExtMI(inst, cpuXC->readPC()));
+ curStaticInst = StaticInst::decode(makeExtMI(inst, thread->readPC()));
- traceData = Trace::getInstRecord(curTick, xcProxy, this, curStaticInst,
- cpuXC->readPC());
+ traceData = Trace::getInstRecord(curTick, tc, this, curStaticInst,
+ thread->readPC());
DPRINTF(Decode,"Decode: Decoded %s instruction (opcode: 0x%x): 0x%x\n",
curStaticInst->getName(), curStaticInst->getOpcode(),
curStaticInst->machInst);
#if FULL_SYSTEM
- cpuXC->setInst(inst);
+ thread->setInst(inst);
#endif // FULL_SYSTEM
}
@@ -417,18 +409,13 @@ void
BaseSimpleCPU::postExecute()
{
#if FULL_SYSTEM
- if (system->kernelBinning->fnbin) {
- assert(kernelStats);
- system->kernelBinning->execute(xcProxy, inst);
- }
-
- if (cpuXC->profile) {
+ if (thread->profile) {
bool usermode =
- (cpuXC->readMiscReg(AlphaISA::IPR_DTB_CM) & 0x18) != 0;
- cpuXC->profilePC = usermode ? 1 : cpuXC->readPC();
- ProfileNode *node = cpuXC->profile->consume(xcProxy, inst);
+ (thread->readMiscReg(AlphaISA::IPR_DTB_CM) & 0x18) != 0;
+ thread->profilePC = usermode ? 1 : thread->readPC();
+ ProfileNode *node = thread->profile->consume(tc, inst);
if (node)
- cpuXC->profileNode = node;
+ thread->profileNode = node;
}
#endif
@@ -441,7 +428,7 @@ BaseSimpleCPU::postExecute()
comLoadEventQueue[0]->serviceEvents(numLoad);
}
- traceFunctions(cpuXC->readPC());
+ traceFunctions(thread->readPC());
if (traceData) {
traceData->finalize();
@@ -454,19 +441,19 @@ BaseSimpleCPU::advancePC(Fault fault)
{
if (fault != NoFault) {
#if FULL_SYSTEM
- fault->invoke(xcProxy);
+ fault->invoke(tc);
#else // !FULL_SYSTEM
- fatal("fault (%s) detected @ PC %08p", fault->name(), cpuXC->readPC());
+ fatal("fault (%s) detected @ PC %08p", fault->name(), thread->readPC());
#endif // FULL_SYSTEM
}
else {
// go to the next instruction
- cpuXC->setPC(cpuXC->readNextPC());
+ thread->setPC(thread->readNextPC());
#if THE_ISA == ALPHA_ISA
- cpuXC->setNextPC(cpuXC->readNextPC() + sizeof(MachInst));
+ thread->setNextPC(thread->readNextPC() + sizeof(MachInst));
#else
- cpuXC->setNextPC(cpuXC->readNextNPC());
- cpuXC->setNextNPC(cpuXC->readNextNPC() + sizeof(MachInst));
+ thread->setNextPC(thread->readNextNPC());
+ thread->setNextNPC(thread->readNextNPC() + sizeof(MachInst));
#endif
}
@@ -474,9 +461,9 @@ BaseSimpleCPU::advancePC(Fault fault)
#if FULL_SYSTEM
Addr oldpc;
do {
- oldpc = cpuXC->readPC();
- system->pcEventQueue.service(xcProxy);
- } while (oldpc != cpuXC->readPC());
+ oldpc = thread->readPC();
+ system->pcEventQueue.service(tc);
+ } while (oldpc != thread->readPC());
#endif
}
diff --git a/src/cpu/simple/base.hh b/src/cpu/simple/base.hh
index 4c0e6f3c7..39bc86050 100644
--- a/src/cpu/simple/base.hh
+++ b/src/cpu/simple/base.hh
@@ -24,6 +24,10 @@
* 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: Steve Reinhardt
+ * Dave Greene
+ * Nathan Binkert
*/
#ifndef __CPU_SIMPLE_BASE_HH__
@@ -32,7 +36,7 @@
#include "base/statistics.hh"
#include "config/full_system.hh"
#include "cpu/base.hh"
-#include "cpu/cpu_exec_context.hh"
+#include "cpu/simple_thread.hh"
#include "cpu/pc_event.hh"
#include "cpu/sampler/sampler.hh"
#include "cpu/static_inst.hh"
@@ -57,7 +61,7 @@ class Process;
#endif // FULL_SYSTEM
-class ExecContext;
+class ThreadContext;
class Checkpoint;
namespace Trace {
@@ -104,10 +108,13 @@ class BaseSimpleCPU : public BaseCPU
virtual ~BaseSimpleCPU();
public:
- // execution context
- CPUExecContext *cpuXC;
+ /** SimpleThread object, provides all the architectural state. */
+ SimpleThread *thread;
- ExecContext *xcProxy;
+ /** ThreadContext object, provides an interface for external
+ * objects to modify this thread's state.
+ */
+ ThreadContext *tc;
#if FULL_SYSTEM
Addr dbg_vtophys(Addr addr);
@@ -129,7 +136,7 @@ class BaseSimpleCPU : public BaseCPU
StaticInstPtr curStaticInst;
void checkForInterrupts();
- Fault setupFetchPacket(Packet *ifetch_pkt);
+ Fault setupFetchRequest(Request *req);
void preExecute();
void postExecute();
void advancePC(Fault fault);
@@ -213,104 +220,104 @@ class BaseSimpleCPU : public BaseCPU
uint64_t readIntReg(const StaticInst *si, int idx)
{
- return cpuXC->readIntReg(si->srcRegIdx(idx));
+ return thread->readIntReg(si->srcRegIdx(idx));
}
FloatReg readFloatReg(const StaticInst *si, int idx, int width)
{
int reg_idx = si->srcRegIdx(idx) - TheISA::FP_Base_DepTag;
- return cpuXC->readFloatReg(reg_idx, width);
+ return thread->readFloatReg(reg_idx, width);
}
FloatReg readFloatReg(const StaticInst *si, int idx)
{
int reg_idx = si->srcRegIdx(idx) - TheISA::FP_Base_DepTag;
- return cpuXC->readFloatReg(reg_idx);
+ return thread->readFloatReg(reg_idx);
}
FloatRegBits readFloatRegBits(const StaticInst *si, int idx, int width)
{
int reg_idx = si->srcRegIdx(idx) - TheISA::FP_Base_DepTag;
- return cpuXC->readFloatRegBits(reg_idx, width);
+ return thread->readFloatRegBits(reg_idx, width);
}
FloatRegBits readFloatRegBits(const StaticInst *si, int idx)
{
int reg_idx = si->srcRegIdx(idx) - TheISA::FP_Base_DepTag;
- return cpuXC->readFloatRegBits(reg_idx);
+ return thread->readFloatRegBits(reg_idx);
}
void setIntReg(const StaticInst *si, int idx, uint64_t val)
{
- cpuXC->setIntReg(si->destRegIdx(idx), val);
+ thread->setIntReg(si->destRegIdx(idx), val);
}
void setFloatReg(const StaticInst *si, int idx, FloatReg val, int width)
{
int reg_idx = si->destRegIdx(idx) - TheISA::FP_Base_DepTag;
- cpuXC->setFloatReg(reg_idx, val, width);
+ thread->setFloatReg(reg_idx, val, width);
}
void setFloatReg(const StaticInst *si, int idx, FloatReg val)
{
int reg_idx = si->destRegIdx(idx) - TheISA::FP_Base_DepTag;
- cpuXC->setFloatReg(reg_idx, val);
+ thread->setFloatReg(reg_idx, val);
}
void setFloatRegBits(const StaticInst *si, int idx,
FloatRegBits val, int width)
{
int reg_idx = si->destRegIdx(idx) - TheISA::FP_Base_DepTag;
- cpuXC->setFloatRegBits(reg_idx, val, width);
+ thread->setFloatRegBits(reg_idx, val, width);
}
void setFloatRegBits(const StaticInst *si, int idx, FloatRegBits val)
{
int reg_idx = si->destRegIdx(idx) - TheISA::FP_Base_DepTag;
- cpuXC->setFloatRegBits(reg_idx, val);
+ thread->setFloatRegBits(reg_idx, val);
}
- uint64_t readPC() { return cpuXC->readPC(); }
- uint64_t readNextPC() { return cpuXC->readNextPC(); }
- uint64_t readNextNPC() { return cpuXC->readNextNPC(); }
+ uint64_t readPC() { return thread->readPC(); }
+ uint64_t readNextPC() { return thread->readNextPC(); }
+ uint64_t readNextNPC() { return thread->readNextNPC(); }
- void setPC(uint64_t val) { cpuXC->setPC(val); }
- void setNextPC(uint64_t val) { cpuXC->setNextPC(val); }
- void setNextNPC(uint64_t val) { cpuXC->setNextNPC(val); }
+ void setPC(uint64_t val) { thread->setPC(val); }
+ void setNextPC(uint64_t val) { thread->setNextPC(val); }
+ void setNextNPC(uint64_t val) { thread->setNextNPC(val); }
MiscReg readMiscReg(int misc_reg)
{
- return cpuXC->readMiscReg(misc_reg);
+ return thread->readMiscReg(misc_reg);
}
MiscReg readMiscRegWithEffect(int misc_reg, Fault &fault)
{
- return cpuXC->readMiscRegWithEffect(misc_reg, fault);
+ return thread->readMiscRegWithEffect(misc_reg, fault);
}
Fault setMiscReg(int misc_reg, const MiscReg &val)
{
- return cpuXC->setMiscReg(misc_reg, val);
+ return thread->setMiscReg(misc_reg, val);
}
Fault setMiscRegWithEffect(int misc_reg, const MiscReg &val)
{
- return cpuXC->setMiscRegWithEffect(misc_reg, val);
+ return thread->setMiscRegWithEffect(misc_reg, val);
}
#if FULL_SYSTEM
- Fault hwrei() { return cpuXC->hwrei(); }
- int readIntrFlag() { return cpuXC->readIntrFlag(); }
- void setIntrFlag(int val) { cpuXC->setIntrFlag(val); }
- bool inPalMode() { return cpuXC->inPalMode(); }
- void ev5_trap(Fault fault) { fault->invoke(xcProxy); }
- bool simPalCheck(int palFunc) { return cpuXC->simPalCheck(palFunc); }
+ Fault hwrei() { return thread->hwrei(); }
+ int readIntrFlag() { return thread->readIntrFlag(); }
+ void setIntrFlag(int val) { thread->setIntrFlag(val); }
+ bool inPalMode() { return thread->inPalMode(); }
+ void ev5_trap(Fault fault) { fault->invoke(tc); }
+ bool simPalCheck(int palFunc) { return thread->simPalCheck(palFunc); }
#else
- void syscall(int64_t callnum) { cpuXC->syscall(callnum); }
+ void syscall(int64_t callnum) { thread->syscall(callnum); }
#endif
- bool misspeculating() { return cpuXC->misspeculating(); }
- ExecContext *xcBase() { return xcProxy; }
+ bool misspeculating() { return thread->misspeculating(); }
+ ThreadContext *tcBase() { return tc; }
};
#endif // __CPU_SIMPLE_BASE_HH__
diff --git a/src/cpu/simple/timing.cc b/src/cpu/simple/timing.cc
index 7cdcdafa1..c99db8fbf 100644
--- a/src/cpu/simple/timing.cc
+++ b/src/cpu/simple/timing.cc
@@ -24,6 +24,8 @@
* 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: Steve Reinhardt
*/
#include "arch/utility.hh"
@@ -50,11 +52,11 @@ TimingSimpleCPU::init()
BaseCPU::init();
#if FULL_SYSTEM
- for (int i = 0; i < execContexts.size(); ++i) {
- ExecContext *xc = execContexts[i];
+ for (int i = 0; i < threadContexts.size(); ++i) {
+ ThreadContext *tc = threadContexts[i];
// initialize CPU, including PC
- TheISA::initCPU(xc, xc->readCpuId());
+ TheISA::initCPU(tc, tc->readCpuId());
}
#endif
}
@@ -123,11 +125,11 @@ TimingSimpleCPU::takeOverFrom(BaseCPU *oldCPU)
{
BaseCPU::takeOverFrom(oldCPU);
- // if any of this CPU's ExecContexts are active, mark the CPU as
+ // if any of this CPU's ThreadContexts are active, mark the CPU as
// running and schedule its tick event.
- for (int i = 0; i < execContexts.size(); ++i) {
- ExecContext *xc = execContexts[i];
- if (xc->status() == ExecContext::Active && _status != Running) {
+ for (int i = 0; i < threadContexts.size(); ++i) {
+ ThreadContext *tc = threadContexts[i];
+ if (tc->status() == ThreadContext::Active && _status != Running) {
_status = Running;
break;
}
@@ -139,7 +141,7 @@ void
TimingSimpleCPU::activateContext(int thread_num, int delay)
{
assert(thread_num == 0);
- assert(cpuXC);
+ assert(thread);
assert(_status == Idle);
@@ -156,7 +158,7 @@ void
TimingSimpleCPU::suspendContext(int thread_num)
{
assert(thread_num == 0);
- assert(cpuXC);
+ assert(thread);
assert(_status == Running);
@@ -172,19 +174,17 @@ template <class T>
Fault
TimingSimpleCPU::read(Addr addr, T &data, unsigned flags)
{
- Request *data_read_req = new Request(true);
+ // need to fill in CPU & thread IDs here
+ Request *data_read_req = new Request();
- data_read_req->setVaddr(addr);
- data_read_req->setSize(sizeof(T));
- data_read_req->setFlags(flags);
- data_read_req->setTime(curTick);
+ data_read_req->setVirt(0, addr, sizeof(T), flags, thread->readPC());
if (traceData) {
traceData->setAddr(data_read_req->getVaddr());
}
// translate to physical address
- Fault fault = cpuXC->translateDataReadReq(data_read_req);
+ Fault fault = thread->translateDataReadReq(data_read_req);
// Now do the access.
if (fault == NoFault) {
@@ -255,14 +255,12 @@ template <class T>
Fault
TimingSimpleCPU::write(T data, Addr addr, unsigned flags, uint64_t *res)
{
- Request *data_write_req = new Request(true);
- data_write_req->setVaddr(addr);
- data_write_req->setTime(curTick);
- data_write_req->setSize(sizeof(T));
- data_write_req->setFlags(flags);
+ // need to fill in CPU & thread IDs here
+ Request *data_write_req = new Request();
+ data_write_req->setVirt(0, addr, sizeof(T), flags, thread->readPC());
// translate to physical address
- Fault fault = cpuXC->translateDataWriteReq(data_write_req);
+ Fault fault = thread->translateDataWriteReq(data_write_req);
// Now do the access.
if (fault == NoFault) {
Packet *data_write_pkt =
@@ -340,13 +338,13 @@ TimingSimpleCPU::fetch()
{
checkForInterrupts();
- Request *ifetch_req = new Request(true);
- ifetch_req->setSize(sizeof(MachInst));
+ // need to fill in CPU & thread IDs here
+ Request *ifetch_req = new Request();
+ Fault fault = setupFetchRequest(ifetch_req);
ifetch_pkt = new Packet(ifetch_req, Packet::ReadReq, Packet::Broadcast);
ifetch_pkt->dataStatic(&inst);
- Fault fault = setupFetchPacket(ifetch_pkt);
if (fault == NoFault) {
if (!icachePort.sendTiming(ifetch_pkt)) {
// Need to wait for retry
@@ -419,17 +417,18 @@ TimingSimpleCPU::IcachePort::recvTiming(Packet *pkt)
return true;
}
-Packet *
+void
TimingSimpleCPU::IcachePort::recvRetry()
{
// we shouldn't get a retry unless we have a packet that we're
// waiting to transmit
assert(cpu->ifetch_pkt != NULL);
assert(cpu->_status == IcacheRetry);
- cpu->_status = IcacheWaitResponse;
Packet *tmp = cpu->ifetch_pkt;
- cpu->ifetch_pkt = NULL;
- return tmp;
+ if (sendTiming(tmp)) {
+ cpu->_status = IcacheWaitResponse;
+ cpu->ifetch_pkt = NULL;
+ }
}
void
@@ -459,17 +458,18 @@ TimingSimpleCPU::DcachePort::recvTiming(Packet *pkt)
return true;
}
-Packet *
+void
TimingSimpleCPU::DcachePort::recvRetry()
{
// we shouldn't get a retry unless we have a packet that we're
// waiting to transmit
assert(cpu->dcache_pkt != NULL);
assert(cpu->_status == DcacheRetry);
- cpu->_status = DcacheWaitResponse;
Packet *tmp = cpu->dcache_pkt;
- cpu->dcache_pkt = NULL;
- return tmp;
+ if (sendTiming(tmp)) {
+ cpu->_status = DcacheWaitResponse;
+ cpu->dcache_pkt = NULL;
+ }
}
diff --git a/src/cpu/simple/timing.hh b/src/cpu/simple/timing.hh
index b46631d5a..ab0b2d2ca 100644
--- a/src/cpu/simple/timing.hh
+++ b/src/cpu/simple/timing.hh
@@ -24,6 +24,8 @@
* 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: Steve Reinhardt
*/
#ifndef __CPU_SIMPLE_TIMING_HH__
@@ -100,7 +102,7 @@ class TimingSimpleCPU : public BaseSimpleCPU
virtual bool recvTiming(Packet *pkt);
- virtual Packet *recvRetry();
+ virtual void recvRetry();
};
class DcachePort : public CpuPort
@@ -115,7 +117,7 @@ class TimingSimpleCPU : public BaseSimpleCPU
virtual bool recvTiming(Packet *pkt);
- virtual Packet *recvRetry();
+ virtual void recvRetry();
};
IcachePort icachePort;
generated by cgit v1.2.3 (git 2.25.1) at 2024-10-31 05:31:48 +0000