fetch_impl.hh (9644:07352f119e48) fetch_impl.hh (9814:7ad2b0186a32)
1/*
1/*
2 * Copyright (c) 2010-2012 ARM Limited
2 * Copyright (c) 2010-2013 ARM Limited
3 * All rights reserved.
4 *
5 * The license below extends only to copyright in the software and shall
6 * not be construed as granting a license to any other intellectual
7 * property including but not limited to intellectual property relating
8 * to a hardware implementation of the functionality of the software
9 * licensed hereunder. You may use the software subject to the license
10 * terms below provided that you ensure that this notice is replicated

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76 : cpu(_cpu),
77 decodeToFetchDelay(params->decodeToFetchDelay),
78 renameToFetchDelay(params->renameToFetchDelay),
79 iewToFetchDelay(params->iewToFetchDelay),
80 commitToFetchDelay(params->commitToFetchDelay),
81 fetchWidth(params->fetchWidth),
82 retryPkt(NULL),
83 retryTid(InvalidThreadID),
3 * All rights reserved.
4 *
5 * The license below extends only to copyright in the software and shall
6 * not be construed as granting a license to any other intellectual
7 * property including but not limited to intellectual property relating
8 * to a hardware implementation of the functionality of the software
9 * licensed hereunder. You may use the software subject to the license
10 * terms below provided that you ensure that this notice is replicated

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76 : cpu(_cpu),
77 decodeToFetchDelay(params->decodeToFetchDelay),
78 renameToFetchDelay(params->renameToFetchDelay),
79 iewToFetchDelay(params->iewToFetchDelay),
80 commitToFetchDelay(params->commitToFetchDelay),
81 fetchWidth(params->fetchWidth),
82 retryPkt(NULL),
83 retryTid(InvalidThreadID),
84 cacheBlkSize(cpu->cacheLineSize()),
85 cacheBlkMask(cacheBlkSize - 1),
84 numThreads(params->numThreads),
85 numFetchingThreads(params->smtNumFetchingThreads),
86 finishTranslationEvent(this)
87{
88 if (numThreads > Impl::MaxThreads)
89 fatal("numThreads (%d) is larger than compiled limit (%d),\n"
90 "\tincrease MaxThreads in src/cpu/o3/impl.hh\n",
91 numThreads, static_cast<int>(Impl::MaxThreads));

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121 fatal("Invalid Fetch Policy. Options Are: {SingleThread,"
122 " RoundRobin,LSQcount,IQcount}\n");
123 }
124
125 // Get the size of an instruction.
126 instSize = sizeof(TheISA::MachInst);
127
128 for (int i = 0; i < Impl::MaxThreads; i++) {
86 numThreads(params->numThreads),
87 numFetchingThreads(params->smtNumFetchingThreads),
88 finishTranslationEvent(this)
89{
90 if (numThreads > Impl::MaxThreads)
91 fatal("numThreads (%d) is larger than compiled limit (%d),\n"
92 "\tincrease MaxThreads in src/cpu/o3/impl.hh\n",
93 numThreads, static_cast<int>(Impl::MaxThreads));

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123 fatal("Invalid Fetch Policy. Options Are: {SingleThread,"
124 " RoundRobin,LSQcount,IQcount}\n");
125 }
126
127 // Get the size of an instruction.
128 instSize = sizeof(TheISA::MachInst);
129
130 for (int i = 0; i < Impl::MaxThreads; i++) {
129 cacheData[i] = NULL;
130 decoder[i] = new TheISA::Decoder;
131 }
132
133 branchPred = params->branchPred;
131 decoder[i] = new TheISA::Decoder;
132 }
133
134 branchPred = params->branchPred;
135
136 for (ThreadID tid = 0; tid < numThreads; tid++) {
137 // Create space to store a cache line.
138 cacheData[tid] = new uint8_t[cacheBlkSize];
139 cacheDataPC[tid] = 0;
140 cacheDataValid[tid] = false;
141 }
134}
135
136template <class Impl>
137std::string
138DefaultFetch<Impl>::name() const
139{
140 return cpu->name() + ".fetch";
141}

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331 stalls[tid].commit = false;
332 stalls[tid].drain = false;
333
334 priorityList.push_back(tid);
335 }
336
337 wroteToTimeBuffer = false;
338 _status = Inactive;
142}
143
144template <class Impl>
145std::string
146DefaultFetch<Impl>::name() const
147{
148 return cpu->name() + ".fetch";
149}

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339 stalls[tid].commit = false;
340 stalls[tid].drain = false;
341
342 priorityList.push_back(tid);
343 }
344
345 wroteToTimeBuffer = false;
346 _status = Inactive;
339
340 // this CPU could still be unconnected if we are restoring from a
341 // checkpoint and this CPU is to be switched in, thus we can only
342 // do this here if the instruction port is actually connected, if
343 // not we have to do it as part of takeOverFrom.
344 if (cpu->getInstPort().isConnected())
345 setIcache();
346}
347
348template<class Impl>
349void
347}
348
349template<class Impl>
350void
350DefaultFetch<Impl>::setIcache()
351{
352 assert(cpu->getInstPort().isConnected());
353
354 // Size of cache block.
355 cacheBlkSize = cpu->getInstPort().peerBlockSize();
356
357 // Create mask to get rid of offset bits.
358 cacheBlkMask = (cacheBlkSize - 1);
359
360 for (ThreadID tid = 0; tid < numThreads; tid++) {
361 // Create space to store a cache line.
362 if (!cacheData[tid])
363 cacheData[tid] = new uint8_t[cacheBlkSize];
364 cacheDataPC[tid] = 0;
365 cacheDataValid[tid] = false;
366 }
367}
368
369template<class Impl>
370void
371DefaultFetch<Impl>::processCacheCompletion(PacketPtr pkt)
372{
373 ThreadID tid = pkt->req->threadId();
374
375 DPRINTF(Fetch, "[tid:%u] Waking up from cache miss.\n", tid);
376 assert(!cpu->switchedOut());
377
378 // Only change the status if it's still waiting on the icache access

--- 1270 unchanged lines hidden --- 		351DefaultFetch<Impl>::processCacheCompletion(PacketPtr pkt)
352{
353 ThreadID tid = pkt->req->threadId();
354
355 DPRINTF(Fetch, "[tid:%u] Waking up from cache miss.\n", tid);
356 assert(!cpu->switchedOut());
357
358 // Only change the status if it's still waiting on the icache access

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