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Diffstat (limited to 'src/cpu/ozone/ea_list.hh')
-rw-r--r-- | src/cpu/ozone/ea_list.hh | 75 |
1 files changed, 75 insertions, 0 deletions
diff --git a/src/cpu/ozone/ea_list.hh b/src/cpu/ozone/ea_list.hh new file mode 100644 index 000000000..d9e9d701f --- /dev/null +++ b/src/cpu/ozone/ea_list.hh @@ -0,0 +1,75 @@ +/* + * Copyright (c) 2005 The Regents of The University of Michigan + * 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: Kevin Lim + * Nathan Binkert + */ + +#ifndef __CPU_EA_LIST_HH__ +#define __CPU_EA_LIST_HH__ + +#include <list> +#include <utility> + +#include "cpu/inst_seq.hh" +#include "sim/host.hh" + +/** + * Simple class to hold onto a list of pairs, each pair having a memory + * instruction's sequence number and effective addr. This list can be used + * for memory disambiguation. However, if I ever want to forward results, I + * may have to use a list that holds DynInstPtrs. Hence this may change in + * the future. + */ +class EAList { + private: + typedef std::pair<InstSeqNum, Addr> instEA; + typedef std::list<instEA>::iterator eaListIt; + typedef std::list<instEA>::const_iterator constEAListIt; + + std::list<instEA> eaList; + + public: + EAList() { } + ~EAList() { } + + void addAddr(const InstSeqNum &new_sn, const Addr &new_ea); + + void clearAddr(const InstSeqNum &sn_to_clear, const Addr &ea_to_clear); + + /** Checks if any instructions older than check_sn have a conflicting + * address with check_ea. Note that this function does not handle the + * sequence number rolling over. + */ + bool checkConflict(const InstSeqNum &check_sn, const Addr &check_ea) const; + + void clear(); + + void commit(const InstSeqNum &commit_sn); +}; + +#endif // __CPU_EA_LIST_HH__ |