116 lines
3.8 KiB
C++
116 lines
3.8 KiB
C++
/*
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* Copyright (c) 2009 The University of Edinburgh
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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: Timothy M. Jones
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*/
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#ifndef __ARCH_POWER_REGISTERS_HH__
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#define __ARCH_POWER_REGISTERS_HH__
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#include "arch/power/generated/max_inst_regs.hh"
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#include "arch/power/miscregs.hh"
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namespace PowerISA {
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using PowerISAInst::MaxInstSrcRegs;
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using PowerISAInst::MaxInstDestRegs;
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// Power writes a misc register outside of the isa parser, so it can't
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// be detected by it. Manually add it here.
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const int MaxMiscDestRegs = PowerISAInst::MaxMiscDestRegs + 1;
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typedef uint8_t RegIndex;
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typedef uint64_t IntReg;
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// Floating point register file entry type
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typedef uint64_t FloatRegBits;
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typedef double FloatReg;
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typedef uint64_t MiscReg;
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// dummy typedef since we don't have CC regs
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typedef uint8_t CCReg;
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// Constants Related to the number of registers
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const int NumIntArchRegs = 32;
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// CR, XER, LR, CTR, FPSCR, RSV, RSV-LEN, RSV-ADDR
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// and zero register, which doesn't actually exist but needs a number
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const int NumIntSpecialRegs = 9;
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const int NumFloatArchRegs = 32;
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const int NumFloatSpecialRegs = 0;
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const int NumInternalProcRegs = 0;
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const int NumIntRegs = NumIntArchRegs + NumIntSpecialRegs;
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const int NumFloatRegs = NumFloatArchRegs + NumFloatSpecialRegs;
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const int NumCCRegs = 0;
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const int NumMiscRegs = NUM_MISCREGS;
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// Semantically meaningful register indices
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const int ReturnValueReg = 3;
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const int ArgumentReg0 = 3;
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const int ArgumentReg1 = 4;
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const int ArgumentReg2 = 5;
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const int ArgumentReg3 = 6;
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const int ArgumentReg4 = 7;
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const int FramePointerReg = 31;
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const int StackPointerReg = 1;
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// There isn't one in Power, but we need to define one somewhere
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const int ZeroReg = NumIntRegs - 1;
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const int SyscallNumReg = 0;
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const int SyscallPseudoReturnReg = 3;
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const int SyscallSuccessReg = 3;
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// These help enumerate all the registers for dependence tracking.
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const int FP_Reg_Base = NumIntRegs;
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const int CC_Reg_Base = FP_Reg_Base + NumFloatRegs;
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const int Misc_Reg_Base = CC_Reg_Base + NumCCRegs; // NumCCRegs == 0
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const int Max_Reg_Index = Misc_Reg_Base + NumMiscRegs;
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typedef union {
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IntReg intreg;
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FloatReg fpreg;
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MiscReg ctrlreg;
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} AnyReg;
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enum MiscIntRegNums {
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INTREG_CR = NumIntArchRegs,
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INTREG_XER,
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INTREG_LR,
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INTREG_CTR,
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INTREG_FPSCR,
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INTREG_RSV,
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INTREG_RSV_LEN,
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INTREG_RSV_ADDR
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};
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} // namespace PowerISA
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#endif // __ARCH_POWER_REGISTERS_HH__
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