isa_traits.hh revision 3980
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 * Ali Saidi 30 */ 31 32#ifndef __ARCH_SPARC_ISA_TRAITS_HH__ 33#define __ARCH_SPARC_ISA_TRAITS_HH__ 34 35#include "arch/sparc/types.hh" 36#include "arch/sparc/sparc_traits.hh" 37#include "config/full_system.hh" 38#include "sim/host.hh" 39 40class StaticInstPtr; 41 42namespace BigEndianGuest {} 43 44namespace SparcISA 45{ 46 class RegFile; 47 48 const int MachineBytes = 8; 49 50 //This makes sure the big endian versions of certain functions are used. 51 using namespace BigEndianGuest; 52 53 // SPARC has a delay slot 54 #define ISA_HAS_DELAY_SLOT 1 55 56 // SPARC NOP (sethi %(hi(0), g0) 57 const MachInst NoopMachInst = 0x01000000; 58 59 // These enumerate all the registers for dependence tracking. 60 enum DependenceTags { 61 FP_Base_DepTag = 32*3+8, 62 Ctrl_Base_DepTag = FP_Base_DepTag + 64 63 }; 64 65 // semantically meaningful register indices 66 const int ZeroReg = 0; // architecturally meaningful 67 // the rest of these depend on the ABI 68 const int StackPointerReg = 14; 69 const int ReturnAddressReg = 31; // post call, precall is 15 70 const int ReturnValueReg = 8; // Post return, 24 is pre-return. 71 const int FramePointerReg = 30; 72 const int ArgumentReg0 = 8; 73 const int ArgumentReg1 = 9; 74 const int ArgumentReg2 = 10; 75 const int ArgumentReg3 = 11; 76 const int ArgumentReg4 = 12; 77 const int ArgumentReg5 = 13; 78 // Some OS syscall use a second register (o1) to return a second value 79 const int SyscallPseudoReturnReg = ArgumentReg1; 80 81 //XXX These numbers are bogus 82 const int MaxInstSrcRegs = 8; 83 const int MaxInstDestRegs = 9; 84 85 //8K. This value is implmentation specific; and should probably 86 //be somewhere else. 87 const int LogVMPageSize = 13; 88 const int VMPageSize = (1 << LogVMPageSize); 89 90 //Why does both the previous set of constants and this one exist? 91 const int PageShift = 13; 92 const int PageBytes = 1ULL << PageShift; 93 94 const int BranchPredAddrShiftAmt = 2; 95 96 StaticInstPtr decodeInst(ExtMachInst); 97 98#if FULL_SYSTEM 99 // I don't know what it's for, so I don't 100 // know what SPARC's value should be 101 // For loading... XXX This maybe could be USegEnd?? --ali 102 const Addr LoadAddrMask = ULL(0xffffffffff); 103 104 /////////// TLB Stuff //////////// 105 const Addr StartVAddrHole = ULL(0x0000800000000000); 106 const Addr EndVAddrHole = ULL(0xFFFF7FFFFFFFFFFF); 107 const Addr VAddrAMask = ULL(0xFFFFFFFF); 108 const Addr PAddrImplMask = ULL(0x000000FFFFFFFFFF); 109 const Addr BytesInPageMask = ULL(0x1FFF); 110 111#endif 112} 113 114#endif // __ARCH_SPARC_ISA_TRAITS_HH__ 115