cpu/ooo_cpu/ea_list.hh

   1 #ifndef __CPU_EA_LIST_HH__
   2 #define __CPU_EA_LIST_HH__
   3
   4 #include <list>
   5 #include <utility>
   6
   7 #include "arch/alpha/isa_traits.hh"
   8 #include "cpu/inst_seq.hh"
   9
  10 /**
  11  * Simple class to hold onto a list of pairs, each pair having a memory
  12  * instruction's sequence number and effective addr.  This list can be used
  13  * for memory disambiguation.  However, if I ever want to forward results, I
  14  * may have to use a list that holds DynInstPtrs.  Hence this may change in
  15  * the future.
  16  */
  17 class EAList {
  18   private:
  19     typedef std::pair<InstSeqNum, Addr> instEA;
  20     typedef std::list<instEA>::iterator eaListIt;
  21     typedef std::list<instEA>::const_iterator constEAListIt;
  22
  23     std::list<instEA> eaList;
  24
  25   public:
  26     EAList() { }
  27     ~EAList() { }
  28
  29     void addAddr(const InstSeqNum &new_sn, const Addr &new_ea);
  30
  31     void clearAddr(const InstSeqNum &sn_to_clear, const Addr &ea_to_clear);
  32
  33     /** Checks if any instructions older than check_sn have a conflicting
  34      *  address with check_ea.  Note that this function does not handle the
  35      *  sequence number rolling over.
  36      */
  37     bool checkConflict(const InstSeqNum &check_sn, const Addr &check_ea) const;
  38
  39     void clear();
  40
  41     void commit(const InstSeqNum &commit_sn);
  42 };
  43
  44 #endif // __CPU_EA_LIST_HH__