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/*
* Copyright (c) 2009 The University of Edinburgh
* 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: Timothy M. Jones
*/
#ifndef __ARCH_POWER_REGISTERS_HH__
#define __ARCH_POWER_REGISTERS_HH__
#include "arch/generic/vec_reg.hh"
#include "arch/power/generated/max_inst_regs.hh"
#include "arch/power/miscregs.hh"
#include "base/types.hh"
namespace PowerISA {
using PowerISAInst::MaxInstSrcRegs;
using PowerISAInst::MaxInstDestRegs;
// Power writes a misc register outside of the isa parser, so it can't
// be detected by it. Manually add it here.
const int MaxMiscDestRegs = PowerISAInst::MaxMiscDestRegs + 1;
typedef RegVal IntReg;
// Floating point register file entry type
typedef RegVal FloatRegBits;
typedef FloatRegVal FloatReg;
typedef RegVal MiscReg;
// dummy typedef since we don't have CC regs
typedef uint8_t CCReg;
// dummy typedefs since we don't have vector regs
constexpr unsigned NumVecElemPerVecReg = 2;
using VecElem = uint32_t;
using VecReg = ::VecRegT<VecElem, NumVecElemPerVecReg, false>;
using ConstVecReg = ::VecRegT<VecElem, NumVecElemPerVecReg, true>;
using VecRegContainer = VecReg::Container;
// This has to be one to prevent warnings that are treated as errors
constexpr unsigned NumVecRegs = 1;
// Constants Related to the number of registers
const int NumIntArchRegs = 32;
// CR, XER, LR, CTR, FPSCR, RSV, RSV-LEN, RSV-ADDR
// and zero register, which doesn't actually exist but needs a number
const int NumIntSpecialRegs = 9;
const int NumFloatArchRegs = 32;
const int NumFloatSpecialRegs = 0;
const int NumInternalProcRegs = 0;
const int NumIntRegs = NumIntArchRegs + NumIntSpecialRegs;
const int NumFloatRegs = NumFloatArchRegs + NumFloatSpecialRegs;
const int NumCCRegs = 0;
const int NumMiscRegs = NUM_MISCREGS;
// Semantically meaningful register indices
const int ReturnValueReg = 3;
const int ArgumentReg0 = 3;
const int ArgumentReg1 = 4;
const int ArgumentReg2 = 5;
const int ArgumentReg3 = 6;
const int ArgumentReg4 = 7;
const int FramePointerReg = 31;
const int StackPointerReg = 1;
// There isn't one in Power, but we need to define one somewhere
const int ZeroReg = NumIntRegs - 1;
const int SyscallNumReg = 0;
const int SyscallPseudoReturnReg = 3;
const int SyscallSuccessReg = 3;
enum MiscIntRegNums {
INTREG_CR = NumIntArchRegs,
INTREG_XER,
INTREG_LR,
INTREG_CTR,
INTREG_FPSCR,
INTREG_RSV,
INTREG_RSV_LEN,
INTREG_RSV_ADDR
};
} // namespace PowerISA
#endif // __ARCH_POWER_REGISTERS_HH__
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