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Diffstat (limited to 'src/mem/ruby/system/StoreCache.cc')
| -rw-r--r-- | src/mem/ruby/system/StoreCache.cc | 178 |
1 files changed, 0 insertions, 178 deletions
diff --git a/src/mem/ruby/system/StoreCache.cc b/src/mem/ruby/system/StoreCache.cc deleted file mode 100644 index a11b2ac50..000000000 --- a/src/mem/ruby/system/StoreCache.cc +++ /dev/null @@ -1,178 +0,0 @@ - -/* - * Copyright (c) 1999-2008 Mark D. Hill and David A. Wood - * 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. - */ - -/* - * $Id$ - * - */ - -#include "mem/ruby/system/StoreCache.hh" -#include "mem/ruby/system/System.hh" -#include "mem/ruby/common/Driver.hh" -#include "mem/gems_common/Vector.hh" -#include "mem/ruby/common/DataBlock.hh" -#include "mem/ruby/common/SubBlock.hh" -#include "mem/gems_common/Map.hh" - -// Helper class -struct StoreCacheEntry { - StoreCacheEntry() { - m_byte_counters.setSize(RubyConfig::dataBlockBytes()); - for(int i=0; i<m_byte_counters.size(); i++) { - m_byte_counters[i] = 0; - } - m_line_counter = 0; - - } - Address m_addr; - DataBlock m_datablock; - Vector<int> m_byte_counters; - int m_line_counter; -}; - -StoreCache::StoreCache() -{ - m_internal_cache_ptr = new Map<Address, StoreCacheEntry>; -} - -StoreCache::~StoreCache() -{ - delete m_internal_cache_ptr; -} - -bool StoreCache::isEmpty() const -{ - return m_internal_cache_ptr->size() == 0; -} - -int StoreCache::size() const { return m_internal_cache_ptr->size(); } - -void StoreCache::add(const SubBlock& block) -{ - if (m_internal_cache_ptr->exist(line_address(block.getAddress())) == false) { - m_internal_cache_ptr->allocate(line_address(block.getAddress())); - } - - StoreCacheEntry& entry = m_internal_cache_ptr->lookup(line_address(block.getAddress())); - - // For each byte in entry change the bytes and inc. the counters - int starting_offset = block.getAddress().getOffset(); - int size = block.getSize(); - for (int index=0; index < size; index++) { - // Update counter - entry.m_byte_counters[starting_offset+index]++; - - // Record data - entry.m_datablock.setByte(starting_offset+index, block.getByte(index)); - - DEBUG_EXPR(SEQUENCER_COMP, LowPrio, block.getAddress()); - DEBUG_EXPR(SEQUENCER_COMP, LowPrio, int(block.getByte(index))); - DEBUG_EXPR(SEQUENCER_COMP, LowPrio, starting_offset+index); - } - - // Increment the counter - entry.m_line_counter++; -} - -void StoreCache::remove(const SubBlock& block) -{ - assert(m_internal_cache_ptr->exist(line_address(block.getAddress()))); - - StoreCacheEntry& entry = m_internal_cache_ptr->lookup(line_address(block.getAddress())); - - // Decrement the byte counters - int starting_offset = block.getAddress().getOffset(); - int size = block.getSize(); - for (int index=0; index < size; index++) { - // Update counter - entry.m_byte_counters[starting_offset+index]--; - } - - // Decrement the line counter - entry.m_line_counter--; - assert(entry.m_line_counter >= 0); - - // Check to see if we should de-allocate this entry - if (entry.m_line_counter == 0) { - m_internal_cache_ptr->deallocate(line_address(block.getAddress())); - } -} - -bool StoreCache::check(const SubBlock& block) const -{ - if (m_internal_cache_ptr->exist(line_address(block.getAddress())) == false) { - return false; - } else { - // Lookup the entry - StoreCacheEntry& entry = m_internal_cache_ptr->lookup(line_address(block.getAddress())); - - // See if all the bytes are valid - int starting_offset = block.getAddress().getOffset(); - int size = block.getSize(); - for (int index=0; index < size; index++) { - if (entry.m_byte_counters[starting_offset+index] > 0) { - // So far so good - } else { - // not all the bytes were valid - return false; - } - } - } - return true; -} - -void StoreCache::update(SubBlock& block) const -{ - if (m_internal_cache_ptr->exist(line_address(block.getAddress()))) { - // Lookup the entry - StoreCacheEntry& entry = m_internal_cache_ptr->lookup(line_address(block.getAddress())); - - // Copy all appropriate and valid bytes from the store cache to - // the SubBlock - int starting_offset = block.getAddress().getOffset(); - int size = block.getSize(); - for (int index=0; index < size; index++) { - - DEBUG_EXPR(SEQUENCER_COMP, LowPrio, block.getAddress()); - DEBUG_EXPR(SEQUENCER_COMP, LowPrio, int(entry.m_datablock.getByte(starting_offset+index))); - DEBUG_EXPR(SEQUENCER_COMP, LowPrio, starting_offset+index); - - // If this byte is valid, copy the data into the sub-block - if (entry.m_byte_counters[starting_offset+index] > 0) { - block.setByte(index, entry.m_datablock.getByte(starting_offset+index)); - } - } - } -} - -void StoreCache::print(ostream& out) const -{ - out << "[StoreCache]"; -} - |