registers.hh revision 10935:acd48ddd725f
1/* 2 * Copyright (c) 2003-2005 The Regents of The University of Michigan 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: Gabe Black 29 */ 30 31#ifndef __ARCH_ALPHA_REGISTERS_HH__ 32#define __ARCH_ALPHA_REGISTERS_HH__ 33 34#include "arch/alpha/generated/max_inst_regs.hh" 35#include "arch/alpha/ipr.hh" 36#include "base/types.hh" 37 38namespace AlphaISA { 39 40using AlphaISAInst::MaxInstSrcRegs; 41using AlphaISAInst::MaxInstDestRegs; 42 43// Locked read/write flags are can't be detected by the ISA parser 44const int MaxMiscDestRegs = AlphaISAInst::MaxMiscDestRegs + 1; 45 46typedef uint8_t RegIndex; 47typedef uint64_t IntReg; 48 49// floating point register file entry type 50typedef double FloatReg; 51typedef uint64_t FloatRegBits; 52 53// control register file contents 54typedef uint64_t MiscReg; 55 56// dummy typedef since we don't have CC regs 57typedef uint8_t CCReg; 58 59union AnyReg 60{ 61 IntReg intreg; 62 FloatReg fpreg; 63 MiscReg ctrlreg; 64}; 65 66enum MiscRegIndex 67{ 68 MISCREG_FPCR = NumInternalProcRegs, 69 MISCREG_UNIQ, 70 MISCREG_LOCKFLAG, 71 MISCREG_LOCKADDR, 72 MISCREG_INTR, 73 NUM_MISCREGS 74}; 75 76// semantically meaningful register indices 77const RegIndex ZeroReg = 31; // architecturally meaningful 78// the rest of these depend on the ABI 79const RegIndex StackPointerReg = 30; 80const RegIndex GlobalPointerReg = 29; 81const RegIndex ProcedureValueReg = 27; 82const RegIndex ReturnAddressReg = 26; 83const RegIndex ReturnValueReg = 0; 84const RegIndex FramePointerReg = 15; 85 86const RegIndex SyscallNumReg = 0; 87const RegIndex FirstArgumentReg = 16; 88const RegIndex SyscallPseudoReturnReg = 20; 89const RegIndex SyscallSuccessReg = 19; 90 91const int NumIntArchRegs = 32; 92const int NumPALShadowRegs = 8; 93const int NumFloatArchRegs = 32; 94 95const int NumIntRegs = NumIntArchRegs + NumPALShadowRegs; 96const int NumFloatRegs = NumFloatArchRegs; 97const int NumCCRegs = 0; 98const int NumMiscRegs = NUM_MISCREGS; 99 100const int TotalNumRegs = 101 NumIntRegs + NumFloatRegs + NumMiscRegs; 102 103// These enumerate all the registers for dependence tracking. 104enum DependenceTags { 105 // 0..31 are the integer regs 0..31 106 // 32..63 are the FP regs 0..31, i.e. use (reg + FP_Reg_Base) 107 FP_Reg_Base = NumIntRegs, 108 CC_Reg_Base = FP_Reg_Base + NumFloatRegs, 109 Misc_Reg_Base = CC_Reg_Base + NumCCRegs, // NumCCRegs == 0 110 Max_Reg_Index = Misc_Reg_Base + NumMiscRegs + NumInternalProcRegs 111}; 112 113} // namespace AlphaISA 114 115#endif // __ARCH_ALPHA_REGFILE_HH__ 116