registers.hh revision 12413
1/* 2 * Copyright (c) 2007 The Hewlett-Packard Development Company 3 * Copyright (c) 2013 Advanced Micro Devices, Inc. 4 * All rights reserved. 5 * 6 * The license below extends only to copyright in the software and shall 7 * not be construed as granting a license to any other intellectual 8 * property including but not limited to intellectual property relating 9 * to a hardware implementation of the functionality of the software 10 * licensed hereunder. You may use the software subject to the license 11 * terms below provided that you ensure that this notice is replicated 12 * unmodified and in its entirety in all distributions of the software, 13 * modified or unmodified, in source code or in binary form. 14 * 15 * Redistribution and use in source and binary forms, with or without 16 * modification, are permitted provided that the following conditions are 17 * met: redistributions of source code must retain the above copyright 18 * notice, this list of conditions and the following disclaimer; 19 * redistributions in binary form must reproduce the above copyright 20 * notice, this list of conditions and the following disclaimer in the 21 * documentation and/or other materials provided with the distribution; 22 * neither the name of the copyright holders nor the names of its 23 * contributors may be used to endorse or promote products derived from 24 * this software without specific prior written permission. 25 * 26 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS 27 * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT 28 * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR 29 * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT 30 * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, 31 * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT 32 * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, 33 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY 34 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 35 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE 36 * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 37 * 38 * Authors: Gabe Black 39 */ 40 41#ifndef __ARCH_X86_REGISTERS_HH__ 42#define __ARCH_X86_REGISTERS_HH__ 43 44#include "arch/generic/vec_reg.hh" 45#include "arch/x86/generated/max_inst_regs.hh" 46#include "arch/x86/regs/int.hh" 47#include "arch/x86/regs/ccr.hh" 48#include "arch/x86/regs/misc.hh" 49#include "arch/x86/x86_traits.hh" 50 51namespace X86ISA 52{ 53using X86ISAInst::MaxInstSrcRegs; 54using X86ISAInst::MaxInstDestRegs; 55using X86ISAInst::MaxMiscDestRegs; 56const int NumMiscRegs = NUM_MISCREGS; 57 58const int NumIntArchRegs = NUM_INTREGS; 59const int NumIntRegs = NumIntArchRegs + NumMicroIntRegs + NumImplicitIntRegs; 60const int NumCCRegs = NUM_CCREGS; 61 62#define ISA_HAS_CC_REGS 63 64// Each 128 bit xmm register is broken into two effective 64 bit registers. 65// Add 8 for the indices that are mapped over the fp stack 66const int NumFloatRegs = 67 NumMMXRegs + 2 * NumXMMRegs + NumMicroFpRegs + 8; 68 69// These enumerate all the registers for dependence tracking. 70enum DependenceTags { 71 // FP_Reg_Base must be large enough to be bigger than any integer 72 // register index which has the IntFoldBit (1 << 6) set. To be safe 73 // we just start at (1 << 7) == 128. 74 FP_Reg_Base = 128, 75 CC_Reg_Base = FP_Reg_Base + NumFloatRegs, 76 Misc_Reg_Base = CC_Reg_Base + NumCCRegs, 77 Max_Reg_Index = Misc_Reg_Base + NumMiscRegs 78}; 79 80// semantically meaningful register indices 81//There is no such register in X86 82const int ZeroReg = NUM_INTREGS; 83const int StackPointerReg = INTREG_RSP; 84//X86 doesn't seem to have a link register 85const int ReturnAddressReg = 0; 86const int ReturnValueReg = INTREG_RAX; 87const int FramePointerReg = INTREG_RBP; 88 89// Some OS syscalls use a second register (rdx) to return a second 90// value 91const int SyscallPseudoReturnReg = INTREG_RDX; 92 93typedef uint64_t IntReg; 94typedef uint64_t CCReg; 95typedef uint64_t MiscReg; 96 97// dummy typedefs since we don't have vector regs 98constexpr unsigned NumVecElemPerVecReg = 2; 99using VecElem = uint32_t; 100using VecReg = ::VecRegT<VecElem, NumVecElemPerVecReg, false>; 101using ConstVecReg = ::VecRegT<VecElem, NumVecElemPerVecReg, true>; 102using VecRegContainer = VecReg::Container; 103// This has to be one to prevent warnings that are treated as errors 104constexpr unsigned NumVecRegs = 1; 105 106//These floating point types are correct for mmx, but not 107//technically for x87 (80 bits) or at all for xmm (128 bits) 108typedef double FloatReg; 109typedef uint64_t FloatRegBits; 110typedef union 111{ 112 IntReg intReg; 113 FloatReg fpReg; 114 CCReg ccReg; 115 MiscReg ctrlReg; 116} AnyReg; 117 118} // namespace X86ISA 119 120#endif // __ARCH_X86_REGFILE_HH__ 121