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[/] [openrisc/] [trunk/] [orpsocv2/] [bench/] [sysc/] [include/] [MpHash.h] - Rev 156
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// ---------------------------------------------------------------------------- // Matchpoint hash table: definition // Copyright (C) 2008 Embecosm Limited <info@embecosm.com> // Contributor Jeremy Bennett <jeremy.bennett@embecosm.com> // This file is part of the cycle accurate model of the OpenRISC 1000 based // system-on-chip, ORPSoC, built using Verilator. // This program is free software: you can redistribute it and/or modify it // under the terms of the GNU Lesser General Public License as published by // the Free Software Foundation, either version 3 of the License, or (at your // option) any later version. // This program is distributed in the hope that it will be useful, but WITHOUT // ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or // FITNESS FOR A PARTICULAR PURPOSE. See the GNU Lesser General Public // License for more details. // You should have received a copy of the GNU Lesser General Public License // along with this program. If not, see <http://www.gnu.org/licenses/>. // ---------------------------------------------------------------------------- // $Id: MpHash.h 317 2009-02-22 19:52:12Z jeremy $ #ifndef MP_HASH__H #define MP_HASH__H #include <stdint.h> //! Default size of the matchpoint hash table. Largest prime < 2^10 #define DEFAULT_MP_HASH_SIZE 1021 //! Enumeration of different types of matchpoint. //! These have explicit values matching the second digit of 'z' and 'Z' //! packets. enum MpType { BP_MEMORY = 0, BP_HARDWARE = 1, WP_WRITE = 2, WP_READ = 3, WP_ACCESS = 4 }; class MpHash; //! A structure for a matchpoint hash table entry struct MpEntry { public: friend class MpHash; // The only one which can get at next MpType type; //!< Type of matchpoint uint32_t addr; //!< Address with the matchpoint uint32_t instr; //!< Substituted instruction private: MpEntry *next; //!< Next in this slot }; //! A hash table for matchpoints //! We do this as our own open hash table. Our keys are a pair of entities //! (address and type), so STL map is not trivial to use. class MpHash { public: // Constructor and destructor MpHash (int _size = DEFAULT_MP_HASH_SIZE); ~MpHash (); // Accessor methods void add (MpType type, uint32_t addr, uint32_t instr); MpEntry *lookup (MpType type, uint32_t addr); bool remove (MpType type, uint32_t addr, uint32_t *instr = NULL); private: //! The hash table MpEntry **hashTab; //! Size of the hash table int size; }; #endif // MP_HASH__H
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