summaryrefslogtreecommitdiff
diff options
context:
space:
mode:
Diffstat
-rw-r--r--src/cpu/base_dyn_inst.cc68
-rw-r--r--src/cpu/base_dyn_inst.hh38
-rw-r--r--src/cpu/o3/alpha_cpu_builder.cc15
-rw-r--r--src/cpu/o3/alpha_params.hh5
-rw-r--r--src/cpu/o3/commit.hh5
-rw-r--r--src/cpu/o3/commit_impl.hh35
-rw-r--r--src/cpu/o3/fetch_impl.hh10
-rw-r--r--src/cpu/o3/iew.hh8
-rw-r--r--src/cpu/o3/iew_impl.hh32
9 files changed, 49 insertions, 167 deletions
diff --git a/src/cpu/base_dyn_inst.cc b/src/cpu/base_dyn_inst.cc
index 30fa10a6b..e3829297d 100644
--- a/src/cpu/base_dyn_inst.cc
+++ b/src/cpu/base_dyn_inst.cc
@@ -1,5 +1,5 @@
/*
- * Copyright (c) 2004-2005 The Regents of The University of Michigan
+ * Copyright (c) 2004-2006 The Regents of The University of Michigan
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
@@ -103,6 +103,8 @@ BaseDynInst<Impl>::initVars()
readyRegs = 0;
+ instResult.integer = 0;
+
// May want to turn this into a bit vector or something.
completed = false;
resultReady = false;
@@ -242,31 +244,7 @@ template <class Impl>
void
BaseDynInst<Impl>::writeHint(Addr addr, int size, unsigned flags)
{
- // Need to create a MemReq here so we can do a translation. This
- // will casue a TLB miss trap if necessary... not sure whether
- // that's the best thing to do or not. We don't really need the
- // MemReq otherwise, since wh64 has no functional effect.
-/*
- MemReqPtr req = new MemReq(addr, thread->getXCProxy(), size, flags);
- req->asid = asid;
-
- fault = cpu->translateDataWriteReq(req);
-
- if (fault == NoFault && !(req->flags & UNCACHEABLE)) {
- // Record key MemReq parameters so we can generate another one
- // just like it for the timing access without calling translate()
- // again (which might mess up the TLB).
- effAddr = req->vaddr;
- physEffAddr = req->paddr;
- memReqFlags = req->flags;
- } else {
- // ignore faults & accesses to uncacheable space... treat as no-op
- effAddr = physEffAddr = MemReq::inval_addr;
- }
-
- storeSize = size;
- storeData = 0;
-*/
+ // Not currently supported.
}
/**
@@ -276,22 +254,7 @@ template <class Impl>
Fault
BaseDynInst<Impl>::copySrcTranslate(Addr src)
{
-/*
- MemReqPtr req = new MemReq(src, thread->getXCProxy(), 64);
- req->asid = asid;
-
- // translate to physical address
- Fault fault = cpu->translateDataReadReq(req);
-
- if (fault == NoFault) {
- thread->copySrcAddr = src;
- thread->copySrcPhysAddr = req->paddr;
- } else {
- thread->copySrcAddr = 0;
- thread->copySrcPhysAddr = 0;
- }
- return fault;
-*/
+ // Not currently supported.
return NoFault;
}
@@ -302,26 +265,7 @@ template <class Impl>
Fault
BaseDynInst<Impl>::copy(Addr dest)
{
-/*
- uint8_t data[64];
- FunctionalMemory *mem = thread->mem;
- assert(thread->copySrcPhysAddr);
- MemReqPtr req = new MemReq(dest, thread->getXCProxy(), 64);
- req->asid = asid;
-
- // translate to physical address
- Fault fault = cpu->translateDataWriteReq(req);
-
- if (fault == NoFault) {
- Addr dest_addr = req->paddr;
- // Need to read straight from memory since we have more than 8 bytes.
- req->paddr = thread->copySrcPhysAddr;
- mem->read(req, data);
- req->paddr = dest_addr;
- mem->write(req, data);
- }
- return fault;
-*/
+ // Not currently supported.
return NoFault;
}
diff --git a/src/cpu/base_dyn_inst.hh b/src/cpu/base_dyn_inst.hh
index 948ee058a..fc9bf8b94 100644
--- a/src/cpu/base_dyn_inst.hh
+++ b/src/cpu/base_dyn_inst.hh
@@ -1,5 +1,5 @@
/*
- * Copyright (c) 2004-2005 The Regents of The University of Michigan
+ * Copyright (c) 2004-2006 The Regents of The University of Michigan
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
@@ -44,12 +44,6 @@
#include "cpu/static_inst.hh"
#include "mem/packet.hh"
#include "sim/system.hh"
-/*
-#include "encumbered/cpu/full/bpred_update.hh"
-#include "encumbered/cpu/full/spec_memory.hh"
-#include "encumbered/cpu/full/spec_state.hh"
-#include "encumbered/mem/functional/main.hh"
-*/
/**
* @file
@@ -202,10 +196,9 @@ class BaseDynInst : public FastAlloc, public RefCounted
Fault fault;
/** The memory request. */
-// MemReqPtr req;
Request *req;
-// Packet pkt;
+ /** Pointer to the data for the memory access. */
uint8_t *memData;
/** The effective virtual address (lds & stores only). */
@@ -288,21 +281,6 @@ class BaseDynInst : public FastAlloc, public RefCounted
void initVars();
public:
- /**
- * @todo: Make this function work; currently it is a dummy function.
- * @param fault Last fault.
- * @param cmd Last command.
- * @param addr Virtual address of access.
- * @param p Memory accessed.
- * @param nbytes Access size.
- */
-// void
-// trace_mem(Fault fault,
-// MemCmd cmd,
-// Addr addr,
-// void *p,
-// int nbytes);
-
/** Dumps out contents of this BaseDynInst. */
void dump();
@@ -439,11 +417,13 @@ class BaseDynInst : public FastAlloc, public RefCounted
/** Returns the result of a floating point (double) instruction. */
double readDoubleResult() { return instResult.dbl; }
+ /** Records an integer register being set to a value. */
void setIntReg(const StaticInst *si, int idx, uint64_t val)
{
instResult.integer = val;
}
+ /** Records an fp register being set to a value. */
void setFloatReg(const StaticInst *si, int idx, FloatReg val, int width)
{
if (width == 32)
@@ -454,16 +434,19 @@ class BaseDynInst : public FastAlloc, public RefCounted
panic("Unsupported width!");
}
+ /** Records an fp register being set to a value. */
void setFloatReg(const StaticInst *si, int idx, FloatReg val)
{
instResult.fp = val;
}
+ /** Records an fp register being set to an integer value. */
void setFloatRegBits(const StaticInst *si, int idx, uint64_t val, int width)
{
instResult.integer = val;
}
+ /** Records an fp register being set to an integer value. */
void setFloatRegBits(const StaticInst *si, int idx, uint64_t val)
{
instResult.integer = val;
@@ -590,14 +573,15 @@ class BaseDynInst : public FastAlloc, public RefCounted
void setNextPC(uint64_t val)
{
nextPC = val;
-// instResult.integer = val;
}
+ /** Sets the ASID. */
void setASID(short addr_space_id) { asid = addr_space_id; }
- void setThread(unsigned tid) { threadNumber = tid; }
+ /** Sets the thread id. */
+ void setTid(unsigned tid) { threadNumber = tid; }
- void setState(ImplState *state) { thread = state; }
+ void setThreadState(ImplState *state) { thread = state; }
/** Returns the thread context.
*/
diff --git a/src/cpu/o3/alpha_cpu_builder.cc b/src/cpu/o3/alpha_cpu_builder.cc
index 828977ccb..a6fbe34d7 100644
--- a/src/cpu/o3/alpha_cpu_builder.cc
+++ b/src/cpu/o3/alpha_cpu_builder.cc
@@ -92,11 +92,6 @@ Param<unsigned> commitToIEWDelay;
Param<unsigned> renameToIEWDelay;
Param<unsigned> issueToExecuteDelay;
Param<unsigned> issueWidth;
-Param<unsigned> executeWidth;
-Param<unsigned> executeIntWidth;
-Param<unsigned> executeFloatWidth;
-Param<unsigned> executeBranchWidth;
-Param<unsigned> executeMemoryWidth;
SimObjectParam<FUPool *> fuPool;
Param<unsigned> iewToCommitDelay;
@@ -213,11 +208,6 @@ BEGIN_INIT_SIM_OBJECT_PARAMS(DerivAlphaFullCPU)
INIT_PARAM(issueToExecuteDelay, "Issue to execute delay (internal"
"to the IEW stage)"),
INIT_PARAM(issueWidth, "Issue width"),
- INIT_PARAM(executeWidth, "Execute width"),
- INIT_PARAM(executeIntWidth, "Integer execute width"),
- INIT_PARAM(executeFloatWidth, "Floating point execute width"),
- INIT_PARAM(executeBranchWidth, "Branch execute width"),
- INIT_PARAM(executeMemoryWidth, "Memory execute width"),
INIT_PARAM_DFLT(fuPool, "Functional unit pool", NULL),
INIT_PARAM(iewToCommitDelay, "Issue/Execute/Writeback to commit "
@@ -344,11 +334,6 @@ CREATE_SIM_OBJECT(DerivAlphaFullCPU)
params->renameToIEWDelay = renameToIEWDelay;
params->issueToExecuteDelay = issueToExecuteDelay;
params->issueWidth = issueWidth;
- params->executeWidth = executeWidth;
- params->executeIntWidth = executeIntWidth;
- params->executeFloatWidth = executeFloatWidth;
- params->executeBranchWidth = executeBranchWidth;
- params->executeMemoryWidth = executeMemoryWidth;
params->fuPool = fuPool;
params->iewToCommitDelay = iewToCommitDelay;
diff --git a/src/cpu/o3/alpha_params.hh b/src/cpu/o3/alpha_params.hh
index f3cf36887..2ece7fb7f 100644
--- a/src/cpu/o3/alpha_params.hh
+++ b/src/cpu/o3/alpha_params.hh
@@ -105,11 +105,6 @@ class AlphaSimpleParams : public BaseFullCPU::Params
unsigned renameToIEWDelay;
unsigned issueToExecuteDelay;
unsigned issueWidth;
- unsigned executeWidth;
- unsigned executeIntWidth;
- unsigned executeFloatWidth;
- unsigned executeBranchWidth;
- unsigned executeMemoryWidth;
FUPool *fuPool;
//
diff --git a/src/cpu/o3/commit.hh b/src/cpu/o3/commit.hh
index b7404c488..0b31cb9c8 100644
--- a/src/cpu/o3/commit.hh
+++ b/src/cpu/o3/commit.hh
@@ -365,11 +365,6 @@ class DefaultCommit
*/
unsigned renameWidth;
- /** IEW width, in instructions. Used so ROB knows how many
- * instructions to get from the IEW instruction queue.
- */
- unsigned iewWidth;
-
/** Commit width, in instructions. */
unsigned commitWidth;
diff --git a/src/cpu/o3/commit_impl.hh b/src/cpu/o3/commit_impl.hh
index ceb2918e0..8384dbead 100644
--- a/src/cpu/o3/commit_impl.hh
+++ b/src/cpu/o3/commit_impl.hh
@@ -72,7 +72,6 @@ DefaultCommit<Impl>::DefaultCommit(Params *params)
renameToROBDelay(params->renameToROBDelay),
fetchToCommitDelay(params->commitToFetchDelay),
renameWidth(params->renameWidth),
- iewWidth(params->executeWidth),
commitWidth(params->commitWidth),
numThreads(params->numberOfThreads),
switchPending(false),
@@ -434,7 +433,7 @@ DefaultCommit<Impl>::setNextStatus()
}
}
- assert(squashes == squashCounter);
+ squashCounter = squashes;
// If commit is currently squashing, then it will have activity for the
// next cycle. Set its next status as active.
@@ -539,8 +538,6 @@ DefaultCommit<Impl>::squashFromTrap(unsigned tid)
commitStatus[tid] = ROBSquashing;
cpu->activityThisCycle();
-
- ++squashCounter;
}
template <class Impl>
@@ -558,8 +555,6 @@ DefaultCommit<Impl>::squashFromTC(unsigned tid)
cpu->activityThisCycle();
tcSquash[tid] = false;
-
- ++squashCounter;
}
template <class Impl>
@@ -585,10 +580,12 @@ DefaultCommit<Impl>::tick()
if (rob->isDoneSquashing(tid)) {
commitStatus[tid] = Running;
- --squashCounter;
} else {
DPRINTF(Commit,"[tid:%u]: Still Squashing, cannot commit any"
"insts this cycle.\n", tid);
+ rob->doSquash(tid);
+ toIEW->commitInfo[tid].robSquashing = true;
+ wroteToTimeBuffer = true;
}
}
}
@@ -694,29 +691,7 @@ DefaultCommit<Impl>::commit()
while (threads != (*activeThreads).end()) {
unsigned tid = *threads++;
-/*
- if (fromFetch->fetchFault && commitStatus[0] != TrapPending) {
- // Record the fault. Wait until it's empty in the ROB.
- // Then handle the trap. Ignore it if there's already a
- // trap pending as fetch will be redirected.
- fetchFault = fromFetch->fetchFault;
- fetchFaultTick = curTick + fetchTrapLatency;
- commitStatus[0] = FetchTrapPending;
- DPRINTF(Commit, "Fault from fetch recorded. Will trap if the "
- "ROB empties without squashing the fault.\n");
- fetchTrapWait = 0;
- }
- // Fetch may tell commit to clear the trap if it's been squashed.
- if (fromFetch->clearFetchFault) {
- DPRINTF(Commit, "Received clear fetch fault signal\n");
- fetchTrapWait = 0;
- if (commitStatus[0] == FetchTrapPending) {
- DPRINTF(Commit, "Clearing fault from fetch\n");
- commitStatus[0] = Running;
- }
- }
-*/
// Not sure which one takes priority. I think if we have
// both, that's a bad sign.
if (trapSquash[tid] == true) {
@@ -744,8 +719,6 @@ DefaultCommit<Impl>::commit()
commitStatus[tid] = ROBSquashing;
- ++squashCounter;
-
// If we want to include the squashing instruction in the squash,
// then use one older sequence number.
InstSeqNum squashed_inst = fromIEW->squashedSeqNum[tid];
diff --git a/src/cpu/o3/fetch_impl.hh b/src/cpu/o3/fetch_impl.hh
index c0a2a5d09..af2aadf09 100644
--- a/src/cpu/o3/fetch_impl.hh
+++ b/src/cpu/o3/fetch_impl.hh
@@ -817,7 +817,7 @@ DefaultFetch<Impl>::checkSignalsAndUpdate(unsigned tid)
// Check ROB squash signals from commit.
if (fromCommit->commitInfo[tid].robSquashing) {
- DPRINTF(Fetch, "[tid:%u]: ROB is still squashing Thread %u.\n", tid);
+ DPRINTF(Fetch, "[tid:%u]: ROB is still squashing.\n", tid);
// Continue to squash.
fetchStatus[tid] = Squashing;
@@ -984,11 +984,11 @@ DefaultFetch<Impl>::fetch(bool &status_change)
DynInstPtr instruction = new DynInst(ext_inst, fetch_PC,
next_PC,
inst_seq, cpu);
- instruction->setThread(tid);
+ instruction->setTid(tid);
instruction->setASID(tid);
- instruction->setState(cpu->thread[tid]);
+ instruction->setThreadState(cpu->thread[tid]);
DPRINTF(Fetch, "[tid:%i]: Instruction PC %#x created "
"[sn:%lli]\n",
@@ -1065,11 +1065,11 @@ DefaultFetch<Impl>::fetch(bool &status_change)
next_PC,
inst_seq, cpu);
instruction->setPredTarg(next_PC + instSize);
- instruction->setThread(tid);
+ instruction->setTid(tid);
instruction->setASID(tid);
- instruction->setState(cpu->thread[tid]);
+ instruction->setThreadState(cpu->thread[tid]);
instruction->traceData = NULL;
diff --git a/src/cpu/o3/iew.hh b/src/cpu/o3/iew.hh
index 2e61af5fc..455de7c3f 100644
--- a/src/cpu/o3/iew.hh
+++ b/src/cpu/o3/iew.hh
@@ -261,6 +261,9 @@ class DefaultIEW
/** Processes inputs and changes state accordingly. */
void checkSignalsAndUpdate(unsigned tid);
+ /** Removes instructions from rename from a thread's instruction list. */
+ void emptyRenameInsts(unsigned tid);
+
/** Sorts instructions coming from rename into lists separated by thread. */
void sortInsts();
@@ -390,11 +393,6 @@ class DefaultIEW
/** Width of issue, in instructions. */
unsigned issueWidth;
- /** Width of execute, in instructions. Might make more sense to break
- * down into FP vs int.
- */
- unsigned executeWidth;
-
/** Index into queue of instructions being written back. */
unsigned wbNumInst;
diff --git a/src/cpu/o3/iew_impl.hh b/src/cpu/o3/iew_impl.hh
index 3929f2e19..0649f10ec 100644
--- a/src/cpu/o3/iew_impl.hh
+++ b/src/cpu/o3/iew_impl.hh
@@ -52,7 +52,6 @@ DefaultIEW<Impl>::DefaultIEW(Params *params)
issueToExecuteDelay(params->issueToExecuteDelay),
issueReadWidth(params->issueWidth),
issueWidth(params->issueWidth),
- executeWidth(params->executeWidth),
numThreads(params->numberOfThreads),
switchedOut(false)
{
@@ -456,16 +455,7 @@ DefaultIEW<Impl>::squash(unsigned tid)
skidBuffer[tid].pop();
}
- while (!insts[tid].empty()) {
- if (insts[tid].front()->isLoad() ||
- insts[tid].front()->isStore() ) {
- toRename->iewInfo[tid].dispatchedToLSQ++;
- }
-
- toRename->iewInfo[tid].dispatched++;
-
- insts[tid].pop();
- }
+ emptyRenameInsts(tid);
}
template<class Impl>
@@ -799,10 +789,12 @@ DefaultIEW<Impl>::checkSignalsAndUpdate(unsigned tid)
}
if (fromCommit->commitInfo[tid].robSquashing) {
- DPRINTF(IEW, "[tid:%i]: ROB is still squashing.\n");
+ DPRINTF(IEW, "[tid:%i]: ROB is still squashing.\n", tid);
dispatchStatus[tid] = Squashing;
+ emptyRenameInsts(tid);
+ wroteToTimeBuffer = true;
return;
}
@@ -853,6 +845,22 @@ DefaultIEW<Impl>::sortInsts()
template <class Impl>
void
+DefaultIEW<Impl>::emptyRenameInsts(unsigned tid)
+{
+ while (!insts[tid].empty()) {
+ if (insts[tid].front()->isLoad() ||
+ insts[tid].front()->isStore() ) {
+ toRename->iewInfo[tid].dispatchedToLSQ++;
+ }
+
+ toRename->iewInfo[tid].dispatched++;
+
+ insts[tid].pop();
+ }
+}
+
+template <class Impl>
+void
DefaultIEW<Impl>::wakeCPU()
{
cpu->wakeCPU();
generated by cgit v1.2.3 (git 2.25.1) at 2024-06-28 02:11:58 +0000