skewed_associative.hh

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#ifndef __MEM_CACHE_INDEXING_POLICIES_SKEWED_ASSOCIATIVE_HH__
#define __MEM_CACHE_INDEXING_POLICIES_SKEWED_ASSOCIATIVE_HH__
 
#include <vector>
 
#include "mem/cache/tags/indexing_policies/base.hh"
#include "params/SkewedAssociative.hh"
 
namespace gem5
{
 
class ReplaceableEntry;
 
class SkewedAssociative : public BaseIndexingPolicy
{
  private:
    const int NUM_SKEWING_FUNCTIONS = 8;
 
    const int msbShift;
 
    Addr hash(const Addr addr) const;
 
    Addr dehash(const Addr addr) const;
 
    Addr skew(const Addr addr, const uint32_t way) const;
 
    Addr deskew(const Addr addr, const uint32_t way) const;
 
    uint32_t extractSet(const Addr addr, const uint32_t way) const;
 
  public:
     typedef SkewedAssociativeParams Params;
 
    SkewedAssociative(const Params &p);
 
    ~SkewedAssociative() {};
 
    std::vector<ReplaceableEntry*> getPossibleEntries(const Addr addr) const
                                                                   override;
 
    Addr regenerateAddr(const Addr tag, const ReplaceableEntry* entry) const
                                                                   override;
};
 
} // namespace gem5
 
#endif //__MEM_CACHE_INDEXING_POLICIES_SKEWED_ASSOCIATIVE_HH__