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Diffstat (limited to 'src/cpu/pred/indirect.hh')
-rw-r--r-- | src/cpu/pred/indirect.hh | 97 |
1 files changed, 0 insertions, 97 deletions
diff --git a/src/cpu/pred/indirect.hh b/src/cpu/pred/indirect.hh deleted file mode 100644 index 89450530e..000000000 --- a/src/cpu/pred/indirect.hh +++ /dev/null @@ -1,97 +0,0 @@ -/* - * Copyright (c) 2014 ARM Limited - * 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: Mitch Hayenga - */ - -#ifndef __CPU_PRED_INDIRECT_HH__ -#define __CPU_PRED_INDIRECT_HH__ - -#include <deque> - -#include "arch/isa_traits.hh" -#include "config/the_isa.hh" -#include "cpu/inst_seq.hh" - -class IndirectPredictor -{ - public: - IndirectPredictor(bool hash_ghr, bool hash_targets, - unsigned num_sets, unsigned num_ways, - unsigned tag_bits, unsigned path_len, - unsigned inst_shift, unsigned num_threads); - bool lookup(Addr br_addr, unsigned ghr, TheISA::PCState& br_target, - ThreadID tid); - void recordIndirect(Addr br_addr, Addr tgt_addr, InstSeqNum seq_num, - ThreadID tid); - void commit(InstSeqNum seq_num, ThreadID tid); - void squash(InstSeqNum seq_num, ThreadID tid); - void recordTarget(InstSeqNum seq_num, unsigned ghr, - const TheISA::PCState& target, ThreadID tid); - - private: - const bool hashGHR; - const bool hashTargets; - const unsigned numSets; - const unsigned numWays; - const unsigned tagBits; - const unsigned pathLength; - const unsigned instShift; - - struct IPredEntry - { - IPredEntry() : tag(0), target(0) { } - Addr tag; - TheISA::PCState target; - }; - - std::vector<std::vector<IPredEntry> > targetCache; - - Addr getSetIndex(Addr br_addr, unsigned ghr, ThreadID tid); - Addr getTag(Addr br_addr); - - struct HistoryEntry - { - HistoryEntry(Addr br_addr, Addr tgt_addr, InstSeqNum seq_num) - : pcAddr(br_addr), targetAddr(tgt_addr), seqNum(seq_num) { } - Addr pcAddr; - Addr targetAddr; - InstSeqNum seqNum; - }; - - - struct ThreadInfo { - ThreadInfo() : headHistEntry(0) { } - - std::deque<HistoryEntry> pathHist; - unsigned headHistEntry; - }; - - std::vector<ThreadInfo> threadInfo; -}; - -#endif // __CPU_PRED_INDIRECT_HH__ |