decoder.hh revision 10924
19020Sgblack@eecs.umich.edu/* 29020Sgblack@eecs.umich.edu * Copyright (c) 2012 Google 39020Sgblack@eecs.umich.edu * All rights reserved. 49020Sgblack@eecs.umich.edu * 59020Sgblack@eecs.umich.edu * Redistribution and use in source and binary forms, with or without 69020Sgblack@eecs.umich.edu * modification, are permitted provided that the following conditions are 79020Sgblack@eecs.umich.edu * met: redistributions of source code must retain the above copyright 89020Sgblack@eecs.umich.edu * notice, this list of conditions and the following disclaimer; 99020Sgblack@eecs.umich.edu * redistributions in binary form must reproduce the above copyright 109020Sgblack@eecs.umich.edu * notice, this list of conditions and the following disclaimer in the 119020Sgblack@eecs.umich.edu * documentation and/or other materials provided with the distribution; 129020Sgblack@eecs.umich.edu * neither the name of the copyright holders nor the names of its 139020Sgblack@eecs.umich.edu * contributors may be used to endorse or promote products derived from 149020Sgblack@eecs.umich.edu * this software without specific prior written permission. 159020Sgblack@eecs.umich.edu * 169020Sgblack@eecs.umich.edu * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS 179020Sgblack@eecs.umich.edu * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT 189020Sgblack@eecs.umich.edu * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR 199020Sgblack@eecs.umich.edu * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT 209020Sgblack@eecs.umich.edu * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, 219020Sgblack@eecs.umich.edu * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT 229020Sgblack@eecs.umich.edu * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, 239020Sgblack@eecs.umich.edu * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY 249020Sgblack@eecs.umich.edu * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 259020Sgblack@eecs.umich.edu * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE 269020Sgblack@eecs.umich.edu * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 279020Sgblack@eecs.umich.edu * 289020Sgblack@eecs.umich.edu * Authors: Gabe Black 299020Sgblack@eecs.umich.edu */ 309020Sgblack@eecs.umich.edu 319020Sgblack@eecs.umich.edu#ifndef __ARCH_X86_DECODER_HH__ 329020Sgblack@eecs.umich.edu#define __ARCH_X86_DECODER_HH__ 339020Sgblack@eecs.umich.edu 349023Sgblack@eecs.umich.edu#include <cassert> 359376Sgblack@eecs.umich.edu#include <vector> 369023Sgblack@eecs.umich.edu 379023Sgblack@eecs.umich.edu#include "arch/x86/regs/misc.hh" 389023Sgblack@eecs.umich.edu#include "arch/x86/types.hh" 399023Sgblack@eecs.umich.edu#include "base/bitfield.hh" 409023Sgblack@eecs.umich.edu#include "base/misc.hh" 419023Sgblack@eecs.umich.edu#include "base/trace.hh" 429023Sgblack@eecs.umich.edu#include "base/types.hh" 439022Sgblack@eecs.umich.edu#include "cpu/decode_cache.hh" 449024Sgblack@eecs.umich.edu#include "cpu/static_inst.hh" 459023Sgblack@eecs.umich.edu#include "debug/Decoder.hh" 469023Sgblack@eecs.umich.edu 479020Sgblack@eecs.umich.edunamespace X86ISA 489020Sgblack@eecs.umich.edu{ 499020Sgblack@eecs.umich.edu 509022Sgblack@eecs.umich.educlass Decoder 519022Sgblack@eecs.umich.edu{ 529023Sgblack@eecs.umich.edu private: 539023Sgblack@eecs.umich.edu //These are defined and documented in decoder_tables.cc 549023Sgblack@eecs.umich.edu static const uint8_t SizeTypeToSize[3][10]; 5510593Sgabeblack@google.com typedef const uint8_t ByteTable[256]; 5610593Sgabeblack@google.com static ByteTable Prefixes; 5710593Sgabeblack@google.com 5810593Sgabeblack@google.com static ByteTable UsesModRMOneByte; 5910593Sgabeblack@google.com static ByteTable UsesModRMTwoByte; 6010593Sgabeblack@google.com static ByteTable UsesModRMThreeByte0F38; 6110593Sgabeblack@google.com static ByteTable UsesModRMThreeByte0F3A; 6210593Sgabeblack@google.com 6310593Sgabeblack@google.com static ByteTable ImmediateTypeOneByte; 6410593Sgabeblack@google.com static ByteTable ImmediateTypeTwoByte; 6510593Sgabeblack@google.com static ByteTable ImmediateTypeThreeByte0F38; 6610593Sgabeblack@google.com static ByteTable ImmediateTypeThreeByte0F3A; 6710924Snilay@cs.wisc.edu static ByteTable ImmediateTypeVex[10]; 689023Sgblack@eecs.umich.edu 699023Sgblack@eecs.umich.edu protected: 709376Sgblack@eecs.umich.edu struct InstBytes 719376Sgblack@eecs.umich.edu { 729376Sgblack@eecs.umich.edu StaticInstPtr si; 739376Sgblack@eecs.umich.edu std::vector<MachInst> chunks; 749376Sgblack@eecs.umich.edu std::vector<MachInst> masks; 759376Sgblack@eecs.umich.edu int lastOffset; 769376Sgblack@eecs.umich.edu 779376Sgblack@eecs.umich.edu InstBytes() : lastOffset(0) 789376Sgblack@eecs.umich.edu {} 799376Sgblack@eecs.umich.edu }; 809376Sgblack@eecs.umich.edu 819376Sgblack@eecs.umich.edu static InstBytes dummy; 829376Sgblack@eecs.umich.edu 839023Sgblack@eecs.umich.edu //The bytes to be predecoded 849023Sgblack@eecs.umich.edu MachInst fetchChunk; 859376Sgblack@eecs.umich.edu InstBytes *instBytes; 869376Sgblack@eecs.umich.edu int chunkIdx; 879023Sgblack@eecs.umich.edu //The pc of the start of fetchChunk 889023Sgblack@eecs.umich.edu Addr basePC; 899023Sgblack@eecs.umich.edu //The pc the current instruction started at 909023Sgblack@eecs.umich.edu Addr origPC; 919023Sgblack@eecs.umich.edu //The offset into fetchChunk of current processing 929023Sgblack@eecs.umich.edu int offset; 939023Sgblack@eecs.umich.edu //The extended machine instruction being generated 949023Sgblack@eecs.umich.edu ExtMachInst emi; 959376Sgblack@eecs.umich.edu //Predecoding state 969376Sgblack@eecs.umich.edu X86Mode mode; 979376Sgblack@eecs.umich.edu X86SubMode submode; 989376Sgblack@eecs.umich.edu uint8_t altOp; 999376Sgblack@eecs.umich.edu uint8_t defOp; 1009376Sgblack@eecs.umich.edu uint8_t altAddr; 1019376Sgblack@eecs.umich.edu uint8_t defAddr; 1029376Sgblack@eecs.umich.edu uint8_t stack; 1039023Sgblack@eecs.umich.edu 1049376Sgblack@eecs.umich.edu uint8_t getNextByte() 1059023Sgblack@eecs.umich.edu { 1069023Sgblack@eecs.umich.edu return ((uint8_t *)&fetchChunk)[offset]; 1079023Sgblack@eecs.umich.edu } 1089023Sgblack@eecs.umich.edu 1099023Sgblack@eecs.umich.edu void getImmediate(int &collected, uint64_t ¤t, int size) 1109023Sgblack@eecs.umich.edu { 1119023Sgblack@eecs.umich.edu //Figure out how many bytes we still need to get for the 1129023Sgblack@eecs.umich.edu //immediate. 1139023Sgblack@eecs.umich.edu int toGet = size - collected; 1149023Sgblack@eecs.umich.edu //Figure out how many bytes are left in our "buffer" 1159023Sgblack@eecs.umich.edu int remaining = sizeof(MachInst) - offset; 1169023Sgblack@eecs.umich.edu //Get as much as we need, up to the amount available. 1179023Sgblack@eecs.umich.edu toGet = toGet > remaining ? remaining : toGet; 1189023Sgblack@eecs.umich.edu 1199023Sgblack@eecs.umich.edu //Shift the bytes we want to be all the way to the right 1209023Sgblack@eecs.umich.edu uint64_t partialImm = fetchChunk >> (offset * 8); 1219023Sgblack@eecs.umich.edu //Mask off what we don't want 1229023Sgblack@eecs.umich.edu partialImm &= mask(toGet * 8); 1239023Sgblack@eecs.umich.edu //Shift it over to overlay with our displacement. 1249023Sgblack@eecs.umich.edu partialImm <<= (immediateCollected * 8); 1259023Sgblack@eecs.umich.edu //Put it into our displacement 1269023Sgblack@eecs.umich.edu current |= partialImm; 1279023Sgblack@eecs.umich.edu //Update how many bytes we've collected. 1289023Sgblack@eecs.umich.edu collected += toGet; 1299023Sgblack@eecs.umich.edu consumeBytes(toGet); 1309023Sgblack@eecs.umich.edu } 1319023Sgblack@eecs.umich.edu 1329376Sgblack@eecs.umich.edu void updateOffsetState() 1339376Sgblack@eecs.umich.edu { 1349376Sgblack@eecs.umich.edu assert(offset <= sizeof(MachInst)); 1359376Sgblack@eecs.umich.edu if (offset == sizeof(MachInst)) { 1369376Sgblack@eecs.umich.edu DPRINTF(Decoder, "At the end of a chunk, idx = %d, chunks = %d.\n", 1379376Sgblack@eecs.umich.edu chunkIdx, instBytes->chunks.size()); 1389376Sgblack@eecs.umich.edu chunkIdx++; 1399376Sgblack@eecs.umich.edu if (chunkIdx == instBytes->chunks.size()) { 1409376Sgblack@eecs.umich.edu outOfBytes = true; 1419376Sgblack@eecs.umich.edu } else { 1429376Sgblack@eecs.umich.edu offset = 0; 1439376Sgblack@eecs.umich.edu fetchChunk = instBytes->chunks[chunkIdx]; 1449376Sgblack@eecs.umich.edu basePC += sizeof(MachInst); 1459376Sgblack@eecs.umich.edu } 1469376Sgblack@eecs.umich.edu } 1479376Sgblack@eecs.umich.edu } 1489376Sgblack@eecs.umich.edu 1499376Sgblack@eecs.umich.edu void consumeByte() 1509023Sgblack@eecs.umich.edu { 1519023Sgblack@eecs.umich.edu offset++; 1529376Sgblack@eecs.umich.edu updateOffsetState(); 1539023Sgblack@eecs.umich.edu } 1549023Sgblack@eecs.umich.edu 1559376Sgblack@eecs.umich.edu void consumeBytes(int numBytes) 1569023Sgblack@eecs.umich.edu { 1579023Sgblack@eecs.umich.edu offset += numBytes; 1589376Sgblack@eecs.umich.edu updateOffsetState(); 1599023Sgblack@eecs.umich.edu } 1609023Sgblack@eecs.umich.edu 1619023Sgblack@eecs.umich.edu //State machine state 1629023Sgblack@eecs.umich.edu protected: 1639023Sgblack@eecs.umich.edu //Whether or not we're out of bytes 1649023Sgblack@eecs.umich.edu bool outOfBytes; 1659023Sgblack@eecs.umich.edu //Whether we've completed generating an ExtMachInst 1669023Sgblack@eecs.umich.edu bool instDone; 1679023Sgblack@eecs.umich.edu //The size of the displacement value 1689023Sgblack@eecs.umich.edu int displacementSize; 1699023Sgblack@eecs.umich.edu //The size of the immediate value 1709023Sgblack@eecs.umich.edu int immediateSize; 1719023Sgblack@eecs.umich.edu //This is how much of any immediate value we've gotten. This is used 1729023Sgblack@eecs.umich.edu //for both the actual immediate and the displacement. 1739023Sgblack@eecs.umich.edu int immediateCollected; 1749023Sgblack@eecs.umich.edu 1759023Sgblack@eecs.umich.edu enum State { 1769023Sgblack@eecs.umich.edu ResetState, 1779376Sgblack@eecs.umich.edu FromCacheState, 1789023Sgblack@eecs.umich.edu PrefixState, 17910924Snilay@cs.wisc.edu TwoByteVexState, 18010924Snilay@cs.wisc.edu ThreeByteVexFirstState, 18110924Snilay@cs.wisc.edu ThreeByteVexSecondState, 18210593Sgabeblack@google.com OneByteOpcodeState, 18310593Sgabeblack@google.com TwoByteOpcodeState, 18410593Sgabeblack@google.com ThreeByte0F38OpcodeState, 18510593Sgabeblack@google.com ThreeByte0F3AOpcodeState, 1869023Sgblack@eecs.umich.edu ModRMState, 1879023Sgblack@eecs.umich.edu SIBState, 1889023Sgblack@eecs.umich.edu DisplacementState, 1899023Sgblack@eecs.umich.edu ImmediateState, 1909023Sgblack@eecs.umich.edu //We should never get to this state. Getting here is an error. 1919023Sgblack@eecs.umich.edu ErrorState 1929023Sgblack@eecs.umich.edu }; 1939023Sgblack@eecs.umich.edu 1949023Sgblack@eecs.umich.edu State state; 1959023Sgblack@eecs.umich.edu 1969023Sgblack@eecs.umich.edu //Functions to handle each of the states 1979376Sgblack@eecs.umich.edu State doResetState(); 1989376Sgblack@eecs.umich.edu State doFromCacheState(); 1999023Sgblack@eecs.umich.edu State doPrefixState(uint8_t); 20010924Snilay@cs.wisc.edu State doTwoByteVexState(uint8_t); 20110924Snilay@cs.wisc.edu State doThreeByteVexFirstState(uint8_t); 20210924Snilay@cs.wisc.edu State doThreeByteVexSecondState(uint8_t); 20310593Sgabeblack@google.com State doOneByteOpcodeState(uint8_t); 20410593Sgabeblack@google.com State doTwoByteOpcodeState(uint8_t); 20510593Sgabeblack@google.com State doThreeByte0F38OpcodeState(uint8_t); 20610593Sgabeblack@google.com State doThreeByte0F3AOpcodeState(uint8_t); 2079023Sgblack@eecs.umich.edu State doModRMState(uint8_t); 2089023Sgblack@eecs.umich.edu State doSIBState(uint8_t); 2099023Sgblack@eecs.umich.edu State doDisplacementState(); 2109023Sgblack@eecs.umich.edu State doImmediateState(); 2119023Sgblack@eecs.umich.edu 21210593Sgabeblack@google.com //Process the actual opcode found earlier, using the supplied tables. 21310593Sgabeblack@google.com State processOpcode(ByteTable &immTable, ByteTable &modrmTable, 21410593Sgabeblack@google.com bool addrSizedImm = false); 21510924Snilay@cs.wisc.edu // Process the opcode found with VEX / XOP prefix. 21610924Snilay@cs.wisc.edu State processExtendedOpcode(ByteTable &immTable); 21710593Sgabeblack@google.com 2189376Sgblack@eecs.umich.edu protected: 2199376Sgblack@eecs.umich.edu /// Caching for decoded instruction objects. 2209376Sgblack@eecs.umich.edu 2219376Sgblack@eecs.umich.edu typedef MiscReg CacheKey; 2229376Sgblack@eecs.umich.edu 2239376Sgblack@eecs.umich.edu typedef DecodeCache::AddrMap<Decoder::InstBytes> DecodePages; 2249376Sgblack@eecs.umich.edu DecodePages *decodePages; 2259376Sgblack@eecs.umich.edu typedef m5::hash_map<CacheKey, DecodePages *> AddrCacheMap; 2269376Sgblack@eecs.umich.edu AddrCacheMap addrCacheMap; 2279376Sgblack@eecs.umich.edu 2289376Sgblack@eecs.umich.edu DecodeCache::InstMap *instMap; 2299376Sgblack@eecs.umich.edu typedef m5::hash_map<CacheKey, DecodeCache::InstMap *> InstCacheMap; 2309376Sgblack@eecs.umich.edu static InstCacheMap instCacheMap; 2319376Sgblack@eecs.umich.edu 2329023Sgblack@eecs.umich.edu public: 2339377Sgblack@eecs.umich.edu Decoder() : basePC(0), origPC(0), offset(0), 2349023Sgblack@eecs.umich.edu outOfBytes(true), instDone(false), 2359023Sgblack@eecs.umich.edu state(ResetState) 2369023Sgblack@eecs.umich.edu { 2379037Sgblack@eecs.umich.edu memset(&emi, 0, sizeof(emi)); 2389376Sgblack@eecs.umich.edu mode = LongMode; 2399376Sgblack@eecs.umich.edu submode = SixtyFourBitMode; 2409376Sgblack@eecs.umich.edu emi.mode.mode = mode; 2419376Sgblack@eecs.umich.edu emi.mode.submode = submode; 2429376Sgblack@eecs.umich.edu altOp = 0; 2439376Sgblack@eecs.umich.edu defOp = 0; 2449376Sgblack@eecs.umich.edu altAddr = 0; 2459376Sgblack@eecs.umich.edu defAddr = 0; 2469376Sgblack@eecs.umich.edu stack = 0; 2479376Sgblack@eecs.umich.edu instBytes = &dummy; 2489376Sgblack@eecs.umich.edu decodePages = NULL; 2499376Sgblack@eecs.umich.edu instMap = NULL; 2509376Sgblack@eecs.umich.edu } 2519376Sgblack@eecs.umich.edu 2529376Sgblack@eecs.umich.edu void setM5Reg(HandyM5Reg m5Reg) 2539376Sgblack@eecs.umich.edu { 2549376Sgblack@eecs.umich.edu mode = (X86Mode)(uint64_t)m5Reg.mode; 2559376Sgblack@eecs.umich.edu submode = (X86SubMode)(uint64_t)m5Reg.submode; 2569376Sgblack@eecs.umich.edu emi.mode.mode = mode; 2579376Sgblack@eecs.umich.edu emi.mode.submode = submode; 2589376Sgblack@eecs.umich.edu altOp = m5Reg.altOp; 2599376Sgblack@eecs.umich.edu defOp = m5Reg.defOp; 2609376Sgblack@eecs.umich.edu altAddr = m5Reg.altAddr; 2619376Sgblack@eecs.umich.edu defAddr = m5Reg.defAddr; 2629376Sgblack@eecs.umich.edu stack = m5Reg.stack; 2639376Sgblack@eecs.umich.edu 2649376Sgblack@eecs.umich.edu AddrCacheMap::iterator amIter = addrCacheMap.find(m5Reg); 2659376Sgblack@eecs.umich.edu if (amIter != addrCacheMap.end()) { 2669376Sgblack@eecs.umich.edu decodePages = amIter->second; 2679376Sgblack@eecs.umich.edu } else { 2689376Sgblack@eecs.umich.edu decodePages = new DecodePages; 2699376Sgblack@eecs.umich.edu addrCacheMap[m5Reg] = decodePages; 2709376Sgblack@eecs.umich.edu } 2719376Sgblack@eecs.umich.edu 2729376Sgblack@eecs.umich.edu InstCacheMap::iterator imIter = instCacheMap.find(m5Reg); 2739376Sgblack@eecs.umich.edu if (imIter != instCacheMap.end()) { 2749376Sgblack@eecs.umich.edu instMap = imIter->second; 2759376Sgblack@eecs.umich.edu } else { 2769376Sgblack@eecs.umich.edu instMap = new DecodeCache::InstMap; 2779376Sgblack@eecs.umich.edu instCacheMap[m5Reg] = instMap; 2789376Sgblack@eecs.umich.edu } 2799023Sgblack@eecs.umich.edu } 2809023Sgblack@eecs.umich.edu 2819478Snilay@cs.wisc.edu void takeOverFrom(Decoder *old) 2829478Snilay@cs.wisc.edu { 2839478Snilay@cs.wisc.edu mode = old->mode; 2849478Snilay@cs.wisc.edu submode = old->submode; 2859478Snilay@cs.wisc.edu emi.mode.mode = mode; 2869478Snilay@cs.wisc.edu emi.mode.submode = submode; 2879478Snilay@cs.wisc.edu altOp = old->altOp; 2889478Snilay@cs.wisc.edu defOp = old->defOp; 2899478Snilay@cs.wisc.edu altAddr = old->altAddr; 2909478Snilay@cs.wisc.edu defAddr = old->defAddr; 2919478Snilay@cs.wisc.edu stack = old->stack; 2929478Snilay@cs.wisc.edu } 2939478Snilay@cs.wisc.edu 2949023Sgblack@eecs.umich.edu void reset() 2959023Sgblack@eecs.umich.edu { 2969023Sgblack@eecs.umich.edu state = ResetState; 2979023Sgblack@eecs.umich.edu } 2989023Sgblack@eecs.umich.edu 2999023Sgblack@eecs.umich.edu void process(); 3009023Sgblack@eecs.umich.edu 3019023Sgblack@eecs.umich.edu //Use this to give data to the decoder. This should be used 3029023Sgblack@eecs.umich.edu //when there is control flow. 3039023Sgblack@eecs.umich.edu void moreBytes(const PCState &pc, Addr fetchPC, MachInst data) 3049023Sgblack@eecs.umich.edu { 3059023Sgblack@eecs.umich.edu DPRINTF(Decoder, "Getting more bytes.\n"); 3069023Sgblack@eecs.umich.edu basePC = fetchPC; 3079023Sgblack@eecs.umich.edu offset = (fetchPC >= pc.instAddr()) ? 0 : pc.instAddr() - fetchPC; 3089023Sgblack@eecs.umich.edu fetchChunk = data; 3099023Sgblack@eecs.umich.edu outOfBytes = false; 3109023Sgblack@eecs.umich.edu process(); 3119023Sgblack@eecs.umich.edu } 3129023Sgblack@eecs.umich.edu 3139023Sgblack@eecs.umich.edu bool needMoreBytes() 3149023Sgblack@eecs.umich.edu { 3159023Sgblack@eecs.umich.edu return outOfBytes; 3169023Sgblack@eecs.umich.edu } 3179023Sgblack@eecs.umich.edu 3189023Sgblack@eecs.umich.edu bool instReady() 3199023Sgblack@eecs.umich.edu { 3209023Sgblack@eecs.umich.edu return instDone; 3219023Sgblack@eecs.umich.edu } 3229023Sgblack@eecs.umich.edu 3239023Sgblack@eecs.umich.edu void 3249023Sgblack@eecs.umich.edu updateNPC(X86ISA::PCState &nextPC) 3259023Sgblack@eecs.umich.edu { 3269023Sgblack@eecs.umich.edu if (!nextPC.size()) { 3279023Sgblack@eecs.umich.edu int size = basePC + offset - origPC; 3289023Sgblack@eecs.umich.edu DPRINTF(Decoder, 3299023Sgblack@eecs.umich.edu "Calculating the instruction size: " 3309023Sgblack@eecs.umich.edu "basePC: %#x offset: %#x origPC: %#x size: %d\n", 3319023Sgblack@eecs.umich.edu basePC, offset, origPC, size); 3329023Sgblack@eecs.umich.edu nextPC.size(size); 3339023Sgblack@eecs.umich.edu nextPC.npc(nextPC.pc() + size); 3349023Sgblack@eecs.umich.edu } 3359023Sgblack@eecs.umich.edu } 3369023Sgblack@eecs.umich.edu 3379022Sgblack@eecs.umich.edu public: 3389022Sgblack@eecs.umich.edu StaticInstPtr decodeInst(ExtMachInst mach_inst); 3399022Sgblack@eecs.umich.edu 3409022Sgblack@eecs.umich.edu /// Decode a machine instruction. 3419022Sgblack@eecs.umich.edu /// @param mach_inst The binary instruction to decode. 3429022Sgblack@eecs.umich.edu /// @retval A pointer to the corresponding StaticInst object. 3439024Sgblack@eecs.umich.edu StaticInstPtr decode(ExtMachInst mach_inst, Addr addr); 3449376Sgblack@eecs.umich.edu StaticInstPtr decode(X86ISA::PCState &nextPC); 3459022Sgblack@eecs.umich.edu}; 3469020Sgblack@eecs.umich.edu 3479020Sgblack@eecs.umich.edu} // namespace X86ISA 3489020Sgblack@eecs.umich.edu 3499020Sgblack@eecs.umich.edu#endif // __ARCH_X86_DECODER_HH__ 350