registers.hh revision 12109:f29e9c5418aa
1/* 2 * Copyright (c) 2010-2011, 2014, 2016 ARM Limited 3 * All rights reserved 4 * 5 * The license below extends only to copyright in the software and shall 6 * not be construed as granting a license to any other intellectual 7 * property including but not limited to intellectual property relating 8 * to a hardware implementation of the functionality of the software 9 * licensed hereunder. You may use the software subject to the license 10 * terms below provided that you ensure that this notice is replicated 11 * unmodified and in its entirety in all distributions of the software, 12 * modified or unmodified, in source code or in binary form. 13 * 14 * Copyright (c) 2007-2008 The Florida State University 15 * All rights reserved. 16 * 17 * Redistribution and use in source and binary forms, with or without 18 * modification, are permitted provided that the following conditions are 19 * met: redistributions of source code must retain the above copyright 20 * notice, this list of conditions and the following disclaimer; 21 * redistributions in binary form must reproduce the above copyright 22 * notice, this list of conditions and the following disclaimer in the 23 * documentation and/or other materials provided with the distribution; 24 * neither the name of the copyright holders nor the names of its 25 * contributors may be used to endorse or promote products derived from 26 * this software without specific prior written permission. 27 * 28 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS 29 * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT 30 * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR 31 * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT 32 * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, 33 * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT 34 * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, 35 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY 36 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 37 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE 38 * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 39 * 40 * Authors: Stephen Hines 41 */ 42 43#ifndef __ARCH_ARM_REGISTERS_HH__ 44#define __ARCH_ARM_REGISTERS_HH__ 45 46#include "arch/arm/ccregs.hh" 47#include "arch/arm/generated/max_inst_regs.hh" 48#include "arch/arm/intregs.hh" 49#include "arch/arm/miscregs.hh" 50#include "arch/generic/vec_reg.hh" 51 52namespace ArmISA { 53 54 55// For a predicated instruction, we need all the 56// destination registers to also be sources 57const int MaxInstSrcRegs = ArmISAInst::MaxInstDestRegs + 58 ArmISAInst::MaxInstSrcRegs; 59using ArmISAInst::MaxInstDestRegs; 60using ArmISAInst::MaxMiscDestRegs; 61 62typedef uint64_t IntReg; 63 64// floating point register file entry type 65typedef uint32_t FloatRegBits; 66typedef float FloatReg; 67 68// Number of VecElem per Vector Register, computed based on the vector length 69constexpr unsigned NumVecElemPerVecReg = 4; 70using VecElem = uint32_t; 71using VecReg = ::VecRegT<VecElem, NumVecElemPerVecReg, false>; 72using ConstVecReg = ::VecRegT<VecElem, NumVecElemPerVecReg, true>; 73using VecRegContainer = VecReg::Container; 74 75// cop-0/cop-1 system control register 76typedef uint64_t MiscReg; 77 78// condition code register; must be at least 32 bits for FpCondCodes 79typedef uint64_t CCReg; 80 81// Constants Related to the number of registers 82const int NumIntArchRegs = NUM_ARCH_INTREGS; 83// The number of single precision floating point registers 84const int NumFloatV7ArchRegs = 64; 85const int NumFloatV8ArchRegs = 128; 86const int NumFloatSpecialRegs = 32; 87const int NumVecV7ArchRegs = 64; 88const int NumVecV8ArchRegs = 32; 89const int NumVecSpecialRegs = 8; 90 91const int NumIntRegs = NUM_INTREGS; 92const int NumFloatRegs = NumFloatV8ArchRegs + NumFloatSpecialRegs; 93const int NumVecRegs = NumVecV8ArchRegs + NumVecSpecialRegs; 94const int NumCCRegs = NUM_CCREGS; 95const int NumMiscRegs = NUM_MISCREGS; 96 97#define ISA_HAS_CC_REGS 98 99const int TotalNumRegs = NumIntRegs + NumFloatRegs + NumVecRegs + NumMiscRegs; 100 101// semantically meaningful register indices 102const int ReturnValueReg = 0; 103const int ReturnValueReg1 = 1; 104const int ReturnValueReg2 = 2; 105const int NumArgumentRegs = 4; 106const int NumArgumentRegs64 = 8; 107const int ArgumentReg0 = 0; 108const int ArgumentReg1 = 1; 109const int ArgumentReg2 = 2; 110const int ArgumentReg3 = 3; 111const int FramePointerReg = 11; 112const int StackPointerReg = INTREG_SP; 113const int ReturnAddressReg = INTREG_LR; 114const int PCReg = INTREG_PC; 115 116const int ZeroReg = INTREG_ZERO; 117 118const int SyscallNumReg = ReturnValueReg; 119const int SyscallPseudoReturnReg = ReturnValueReg; 120const int SyscallSuccessReg = ReturnValueReg; 121 122typedef union { 123 IntReg intreg; 124 FloatReg fpreg; 125 CCReg ccreg; 126 MiscReg ctrlreg; 127} AnyReg; 128 129} // namespace ArmISA 130 131#endif 132