registers.hh revision 11723
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/x86/generated/max_inst_regs.hh" 45#include "arch/x86/regs/int.hh" 46#include "arch/x86/regs/ccr.hh" 47#include "arch/x86/regs/misc.hh" 48#include "arch/x86/x86_traits.hh" 49 50namespace X86ISA 51{ 52using X86ISAInst::MaxInstSrcRegs; 53using X86ISAInst::MaxInstDestRegs; 54using X86ISAInst::MaxMiscDestRegs; 55const int NumMiscRegs = NUM_MISCREGS; 56 57const int NumIntArchRegs = NUM_INTREGS; 58const int NumIntRegs = NumIntArchRegs + NumMicroIntRegs + NumImplicitIntRegs; 59const int NumCCRegs = NUM_CCREGS; 60 61#define ISA_HAS_CC_REGS 62 63// Each 128 bit xmm register is broken into two effective 64 bit registers. 64// Add 8 for the indices that are mapped over the fp stack 65const int NumFloatRegs = 66 NumMMXRegs + 2 * NumXMMRegs + NumMicroFpRegs + 8; 67 68// These enumerate all the registers for dependence tracking. 69enum DependenceTags { 70 // FP_Reg_Base must be large enough to be bigger than any integer 71 // register index which has the IntFoldBit (1 << 6) set. To be safe 72 // we just start at (1 << 7) == 128. 73 FP_Reg_Base = 128, 74 CC_Reg_Base = FP_Reg_Base + NumFloatRegs, 75 Misc_Reg_Base = CC_Reg_Base + NumCCRegs, 76 Max_Reg_Index = Misc_Reg_Base + NumMiscRegs 77}; 78 79// semantically meaningful register indices 80//There is no such register in X86 81const int ZeroReg = NUM_INTREGS; 82const int StackPointerReg = INTREG_RSP; 83//X86 doesn't seem to have a link register 84const int ReturnAddressReg = 0; 85const int ReturnValueReg = INTREG_RAX; 86const int FramePointerReg = INTREG_RBP; 87 88// Some OS syscalls use a second register (rdx) to return a second 89// value 90const int SyscallPseudoReturnReg = INTREG_RDX; 91 92typedef uint64_t IntReg; 93typedef uint64_t CCReg; 94typedef uint64_t MiscReg; 95 96//These floating point types are correct for mmx, but not 97//technically for x87 (80 bits) or at all for xmm (128 bits) 98typedef double FloatReg; 99typedef uint64_t FloatRegBits; 100typedef union 101{ 102 IntReg intReg; 103 FloatReg fpReg; 104 CCReg ccReg; 105 MiscReg ctrlReg; 106} AnyReg; 107 108typedef uint16_t RegIndex; 109 110} // namespace X86ISA 111 112#endif // __ARCH_X86_REGFILE_HH__ 113