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Diffstat (limited to 'src/mem/ruby/system/PerfectCacheMemory.hh')
| -rw-r--r-- | src/mem/ruby/system/PerfectCacheMemory.hh | 192 |
1 files changed, 0 insertions, 192 deletions
diff --git a/src/mem/ruby/system/PerfectCacheMemory.hh b/src/mem/ruby/system/PerfectCacheMemory.hh deleted file mode 100644 index b56543c41..000000000 --- a/src/mem/ruby/system/PerfectCacheMemory.hh +++ /dev/null @@ -1,192 +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. - */ - -#ifndef __MEM_RUBY_SYSTEM_PERFECTCACHEMEMORY_HH__ -#define __MEM_RUBY_SYSTEM_PERFECTCACHEMEMORY_HH__ - -#include "base/hashmap.hh" -#include "mem/protocol/AccessPermission.hh" -#include "mem/ruby/common/Address.hh" - -template<class ENTRY> -struct PerfectCacheLineState -{ - PerfectCacheLineState() { m_permission = AccessPermission_NUM; } - AccessPermission m_permission; - ENTRY m_entry; -}; - -template<class ENTRY> -inline std::ostream& -operator<<(std::ostream& out, const PerfectCacheLineState<ENTRY>& obj) -{ - return out; -} - -template<class ENTRY> -class PerfectCacheMemory -{ - public: - PerfectCacheMemory(); - - // tests to see if an address is present in the cache - bool isTagPresent(const Address& address) const; - - // Returns true if there is: - // a) a tag match on this address or there is - // b) an Invalid line in the same cache "way" - bool cacheAvail(const Address& address) const; - - // find an Invalid entry and sets the tag appropriate for the address - void allocate(const Address& address); - - void deallocate(const Address& address); - - // Returns with the physical address of the conflicting cache line - Address cacheProbe(const Address& newAddress) const; - - // looks an address up in the cache - ENTRY& lookup(const Address& address); - const ENTRY& lookup(const Address& address) const; - - // Get/Set permission of cache block - AccessPermission getPermission(const Address& address) const; - void changePermission(const Address& address, AccessPermission new_perm); - - // Print cache contents - void print(std::ostream& out) const; - - private: - // Private copy constructor and assignment operator - PerfectCacheMemory(const PerfectCacheMemory& obj); - PerfectCacheMemory& operator=(const PerfectCacheMemory& obj); - - // Data Members (m_prefix) - m5::hash_map<Address, PerfectCacheLineState<ENTRY> > m_map; -}; - -template<class ENTRY> -inline std::ostream& -operator<<(std::ostream& out, const PerfectCacheMemory<ENTRY>& obj) -{ - obj.print(out); - out << std::flush; - return out; -} - -template<class ENTRY> -inline -PerfectCacheMemory<ENTRY>::PerfectCacheMemory() -{ -} - -// tests to see if an address is present in the cache -template<class ENTRY> -inline bool -PerfectCacheMemory<ENTRY>::isTagPresent(const Address& address) const -{ - return m_map.count(line_address(address)) > 0; -} - -template<class ENTRY> -inline bool -PerfectCacheMemory<ENTRY>::cacheAvail(const Address& address) const -{ - return true; -} - -// find an Invalid or already allocated entry and sets the tag -// appropriate for the address -template<class ENTRY> -inline void -PerfectCacheMemory<ENTRY>::allocate(const Address& address) -{ - PerfectCacheLineState<ENTRY> line_state; - line_state.m_permission = AccessPermission_Invalid; - line_state.m_entry = ENTRY(); - m_map[line_address(address)] = line_state; -} - -// deallocate entry -template<class ENTRY> -inline void -PerfectCacheMemory<ENTRY>::deallocate(const Address& address) -{ - m_map.erase(line_address(address)); -} - -// Returns with the physical address of the conflicting cache line -template<class ENTRY> -inline Address -PerfectCacheMemory<ENTRY>::cacheProbe(const Address& newAddress) const -{ - panic("cacheProbe called in perfect cache"); - return newAddress; -} - -// looks an address up in the cache -template<class ENTRY> -inline ENTRY& -PerfectCacheMemory<ENTRY>::lookup(const Address& address) -{ - return m_map[line_address(address)].m_entry; -} - -// looks an address up in the cache -template<class ENTRY> -inline const ENTRY& -PerfectCacheMemory<ENTRY>::lookup(const Address& address) const -{ - return m_map[line_address(address)].m_entry; -} - -template<class ENTRY> -inline AccessPermission -PerfectCacheMemory<ENTRY>::getPermission(const Address& address) const -{ - return m_map[line_address(address)].m_permission; -} - -template<class ENTRY> -inline void -PerfectCacheMemory<ENTRY>::changePermission(const Address& address, - AccessPermission new_perm) -{ - Address line_address = address; - line_address.makeLineAddress(); - PerfectCacheLineState<ENTRY>& line_state = m_map[line_address]; - line_state.m_permission = new_perm; -} - -template<class ENTRY> -inline void -PerfectCacheMemory<ENTRY>::print(std::ostream& out) const -{ -} - -#endif // __MEM_RUBY_SYSTEM_PERFECTCACHEMEMORY_HH__ |