114 lines
3.8 KiB
C++
114 lines
3.8 KiB
C++
/*
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* Copyright (c) 2003-2005 The Regents of The University of Michigan
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* All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions are
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* met: redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer;
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* redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution;
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* neither the name of the copyright holders nor the names of its
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* contributors may be used to endorse or promote products derived from
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* this software without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
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* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
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* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
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* A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
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* OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
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* SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
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* LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
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* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
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* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
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* OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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*
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* Authors: Gabe Black
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* Ali Saidi
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*/
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#ifndef __ARCH_SPARC_INTREGFILE_HH__
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#define __ARCH_SPARC_INTREGFILE_HH__
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#include "arch/sparc/isa_traits.hh"
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#include "arch/sparc/types.hh"
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#include "base/bitfield.hh"
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#include <string>
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class Checkpoint;
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namespace SparcISA
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{
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class RegFile;
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//This function translates integer register file indices into names
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std::string getIntRegName(RegIndex);
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const int NumIntArchRegs = 32;
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const int NumIntRegs = (MaxGL + 1) * 8 + NWindows * 16 + NumMicroIntRegs;
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class IntRegFile
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{
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private:
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friend class RegFile;
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protected:
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//The number of bits needed to index into each 8 register frame
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static const int FrameOffsetBits = 3;
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//The number of bits to choose between the 4 sets of 8 registers
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static const int FrameNumBits = 2;
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//The number of registers per "frame" (8)
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static const int RegsPerFrame = 1 << FrameOffsetBits;
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//A mask to get the frame number
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static const uint64_t FrameNumMask =
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(FrameNumBits == sizeof(int)) ?
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(unsigned int)(-1) :
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(1 << FrameNumBits) - 1;
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static const uint64_t FrameOffsetMask =
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(FrameOffsetBits == sizeof(int)) ?
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(unsigned int)(-1) :
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(1 << FrameOffsetBits) - 1;
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IntReg regGlobals[MaxGL+1][RegsPerFrame];
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IntReg regSegments[2 * NWindows][RegsPerFrame];
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IntReg microRegs[NumMicroIntRegs];
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IntReg regs[NumIntRegs];
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enum regFrame {Globals, Outputs, Locals, Inputs, NumFrames};
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IntReg * regView[NumFrames];
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static const int RegGlobalOffset = 0;
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static const int FrameOffset = (MaxGL + 1) * RegsPerFrame;
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int offset[NumFrames];
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public:
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int flattenIndex(int reg);
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void clear();
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IntRegFile();
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IntReg readReg(int intReg);
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void setReg(int intReg, const IntReg &val);
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void serialize(std::ostream &os);
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void unserialize(Checkpoint *cp, const std::string §ion);
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protected:
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//This doesn't effect the actual CWP register.
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//It's purpose is to adjust the view of the register file
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//to what it would be if CWP = cwp.
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void setCWP(int cwp);
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void setGlobals(int gl);
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};
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}
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#endif
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