registers.hh revision 9918:2c7219e2d999
1/* 2 * Copyright (c) 2009 The University of Edinburgh 3 * All rights reserved. 4 * 5 * Redistribution and use in source and binary forms, with or without 6 * modification, are permitted provided that the following conditions are 7 * met: redistributions of source code must retain the above copyright 8 * notice, this list of conditions and the following disclaimer; 9 * redistributions in binary form must reproduce the above copyright 10 * notice, this list of conditions and the following disclaimer in the 11 * documentation and/or other materials provided with the distribution; 12 * neither the name of the copyright holders nor the names of its 13 * contributors may be used to endorse or promote products derived from 14 * this software without specific prior written permission. 15 * 16 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS 17 * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT 18 * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR 19 * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT 20 * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, 21 * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT 22 * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, 23 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY 24 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 25 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE 26 * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 27 * 28 * Authors: Timothy M. Jones 29 */ 30 31#ifndef __ARCH_POWER_REGISTERS_HH__ 32#define __ARCH_POWER_REGISTERS_HH__ 33 34#include "arch/power/generated/max_inst_regs.hh" 35#include "arch/power/miscregs.hh" 36 37namespace PowerISA { 38 39using PowerISAInst::MaxInstSrcRegs; 40using PowerISAInst::MaxInstDestRegs; 41 42// Power writes a misc register outside of the isa parser, so it can't 43// be detected by it. Manually add it here. 44const int MaxMiscDestRegs = PowerISAInst::MaxMiscDestRegs + 1; 45 46typedef uint8_t RegIndex; 47 48typedef uint64_t IntReg; 49 50// Floating point register file entry type 51typedef uint64_t FloatRegBits; 52typedef double FloatReg; 53typedef uint64_t MiscReg; 54 55// Constants Related to the number of registers 56const int NumIntArchRegs = 32; 57 58// CR, XER, LR, CTR, FPSCR, RSV, RSV-LEN, RSV-ADDR 59// and zero register, which doesn't actually exist but needs a number 60const int NumIntSpecialRegs = 9; 61const int NumFloatArchRegs = 32; 62const int NumFloatSpecialRegs = 0; 63const int NumInternalProcRegs = 0; 64 65const int NumIntRegs = NumIntArchRegs + NumIntSpecialRegs; 66const int NumFloatRegs = NumFloatArchRegs + NumFloatSpecialRegs; 67const int NumMiscRegs = NUM_MISCREGS; 68 69// Semantically meaningful register indices 70const int ReturnValueReg = 3; 71const int ArgumentReg0 = 3; 72const int ArgumentReg1 = 4; 73const int ArgumentReg2 = 5; 74const int ArgumentReg3 = 6; 75const int ArgumentReg4 = 7; 76const int FramePointerReg = 31; 77const int StackPointerReg = 1; 78 79// There isn't one in Power, but we need to define one somewhere 80const int ZeroReg = NumIntRegs - 1; 81 82const int SyscallNumReg = 0; 83const int SyscallPseudoReturnReg = 3; 84const int SyscallSuccessReg = 3; 85 86// These help enumerate all the registers for dependence tracking. 87const int FP_Reg_Base = NumIntRegs; 88const int Misc_Reg_Base = FP_Reg_Base + NumFloatRegs; 89const int Max_Reg_Index = Misc_Reg_Base + NumMiscRegs; 90 91typedef union { 92 IntReg intreg; 93 FloatReg fpreg; 94 MiscReg ctrlreg; 95} AnyReg; 96 97enum MiscIntRegNums { 98 INTREG_CR = NumIntArchRegs, 99 INTREG_XER, 100 INTREG_LR, 101 INTREG_CTR, 102 INTREG_FPSCR, 103 INTREG_RSV, 104 INTREG_RSV_LEN, 105 INTREG_RSV_ADDR 106}; 107 108} // namespace PowerISA 109 110#endif // __ARCH_POWER_REGISTERS_HH__ 111