| /* |
| * Copyright (c) 2003-2005 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: Gabe Black |
| * Ali Saidi |
| */ |
| |
| #ifndef __ARCH_SPARC_INTREGFILE_HH__ |
| #define __ARCH_SPARC_INTREGFILE_HH__ |
| |
| #include "arch/sparc/isa_traits.hh" |
| #include "arch/sparc/types.hh" |
| #include "base/bitfield.hh" |
| |
| #include <string> |
| |
| class Checkpoint; |
| |
| namespace SparcISA |
| { |
| class RegFile; |
| |
| //This function translates integer register file indices into names |
| std::string getIntRegName(RegIndex); |
| |
| const int NumIntArchRegs = 32; |
| const int NumIntRegs = (MaxGL + 1) * 8 + NWindows * 16 + NumMicroIntRegs; |
| |
| class IntRegFile |
| { |
| private: |
| friend class RegFile; |
| protected: |
| //The number of bits needed to index into each 8 register frame |
| static const int FrameOffsetBits = 3; |
| //The number of bits to choose between the 4 sets of 8 registers |
| static const int FrameNumBits = 2; |
| |
| //The number of registers per "frame" (8) |
| static const int RegsPerFrame = 1 << FrameOffsetBits; |
| //A mask to get the frame number |
| static const uint64_t FrameNumMask = |
| (FrameNumBits == sizeof(int)) ? |
| (unsigned int)(-1) : |
| (1 << FrameNumBits) - 1; |
| static const uint64_t FrameOffsetMask = |
| (FrameOffsetBits == sizeof(int)) ? |
| (unsigned int)(-1) : |
| (1 << FrameOffsetBits) - 1; |
| |
| IntReg regGlobals[MaxGL+1][RegsPerFrame]; |
| IntReg regSegments[2 * NWindows][RegsPerFrame]; |
| IntReg microRegs[NumMicroIntRegs]; |
| IntReg regs[NumIntRegs]; |
| |
| enum regFrame {Globals, Outputs, Locals, Inputs, NumFrames}; |
| |
| IntReg * regView[NumFrames]; |
| |
| static const int RegGlobalOffset = 0; |
| static const int FrameOffset = (MaxGL + 1) * RegsPerFrame; |
| int offset[NumFrames]; |
| |
| public: |
| |
| int flattenIndex(int reg); |
| |
| void clear(); |
| |
| IntRegFile(); |
| |
| IntReg readReg(int intReg); |
| |
| void setReg(int intReg, const IntReg &val); |
| |
| void serialize(std::ostream &os); |
| |
| void unserialize(Checkpoint *cp, const std::string §ion); |
| |
| protected: |
| //This doesn't effect the actual CWP register. |
| //It's purpose is to adjust the view of the register file |
| //to what it would be if CWP = cwp. |
| void setCWP(int cwp); |
| |
| void setGlobals(int gl); |
| }; |
| } |
| |
| #endif |