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Diffstat (limited to 'cpu/o3/rename_map.hh')
| -rw-r--r-- | cpu/o3/rename_map.hh | 173 |
1 files changed, 0 insertions, 173 deletions
diff --git a/cpu/o3/rename_map.hh b/cpu/o3/rename_map.hh deleted file mode 100644 index 57be4a64a..000000000 --- a/cpu/o3/rename_map.hh +++ /dev/null @@ -1,173 +0,0 @@ -/* - * Copyright (c) 2004-2005 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. - */ - -// Todo: Create destructor. -// Have it so that there's a more meaningful name given to the variable -// that marks the beginning of the FP registers. - -#ifndef __CPU_O3_CPU_RENAME_MAP_HH__ -#define __CPU_O3_CPU_RENAME_MAP_HH__ - -#include <iostream> -#include <utility> -#include <vector> - -#include "cpu/o3/free_list.hh" -//For RegIndex -#include "arch/isa_traits.hh" - -class SimpleRenameMap -{ - protected: - typedef TheISA::RegIndex RegIndex; - public: - /** - * Pair of a logical register and a physical register. Tells the - * previous mapping of a logical register to a physical register. - * Used to roll back the rename map to a previous state. - */ - typedef std::pair<RegIndex, PhysRegIndex> UnmapInfo; - - /** - * Pair of a physical register and a physical register. Used to - * return the physical register that a logical register has been - * renamed to, and the previous physical register that the same - * logical register was previously mapped to. - */ - typedef std::pair<PhysRegIndex, PhysRegIndex> RenameInfo; - - public: - //Constructor - SimpleRenameMap(unsigned _numLogicalIntRegs, - unsigned _numPhysicalIntRegs, - unsigned _numLogicalFloatRegs, - unsigned _numPhysicalFloatRegs, - unsigned _numMiscRegs, - RegIndex _intZeroReg, - RegIndex _floatZeroReg); - - /** Destructor. */ - ~SimpleRenameMap(); - - void setFreeList(SimpleFreeList *fl_ptr); - - //Tell rename map to get a free physical register for a given - //architected register. Not sure it should have a return value, - //but perhaps it should have some sort of fault in case there are - //no free registers. - RenameInfo rename(RegIndex arch_reg); - - PhysRegIndex lookup(RegIndex phys_reg); - - bool isReady(PhysRegIndex arch_reg); - - /** - * Marks the given register as ready, meaning that its value has been - * calculated and written to the register file. - * @param ready_reg The index of the physical register that is now ready. - */ - void markAsReady(PhysRegIndex ready_reg); - - void setEntry(RegIndex arch_reg, PhysRegIndex renamed_reg); - - void squash(std::vector<RegIndex> freed_regs, - std::vector<UnmapInfo> unmaps); - - int numFreeEntries(); - - private: - /** Number of logical integer registers. */ - int numLogicalIntRegs; - - /** Number of physical integer registers. */ - int numPhysicalIntRegs; - - /** Number of logical floating point registers. */ - int numLogicalFloatRegs; - - /** Number of physical floating point registers. */ - int numPhysicalFloatRegs; - - /** Number of miscellaneous registers. */ - int numMiscRegs; - - /** Number of logical integer + float registers. */ - int numLogicalRegs; - - /** Number of physical integer + float registers. */ - int numPhysicalRegs; - - /** The integer zero register. This implementation assumes it is always - * zero and never can be anything else. - */ - RegIndex intZeroReg; - - /** The floating point zero register. This implementation assumes it is - * always zero and never can be anything else. - */ - RegIndex floatZeroReg; - - class RenameEntry - { - public: - PhysRegIndex physical_reg; - bool valid; - - RenameEntry() - : physical_reg(0), valid(false) - { } - }; - - /** Integer rename map. */ - RenameEntry *intRenameMap; - - /** Floating point rename map. */ - RenameEntry *floatRenameMap; - - /** Free list interface. */ - SimpleFreeList *freeList; - - // Might want to make all these scoreboards into one large scoreboard. - - /** Scoreboard of physical integer registers, saying whether or not they - * are ready. - */ - std::vector<bool> intScoreboard; - - /** Scoreboard of physical floating registers, saying whether or not they - * are ready. - */ - std::vector<bool> floatScoreboard; - - /** Scoreboard of miscellaneous registers, saying whether or not they - * are ready. - */ - std::vector<bool> miscScoreboard; -}; - -#endif //__CPU_O3_CPU_RENAME_MAP_HH__ |