#include <decoder.hh>

Inheritance diagram for gem5::X86ISA::Decoder:

Classes
struct	InstBytes

Public Member Functions
	Decoder (const X86DecoderParams &p)

void	setM5Reg (HandyM5Reg m5Reg)

void	takeOverFrom (InstDecoder *old) override
	Take over the state from an old decoder when switching CPUs. More...

void	reset () override

void	moreBytes (const PCStateBase &pc, Addr fetchPC) override
	Feed data to the decoder. More...

void	updateNPC (X86ISA::PCState &nextPC)

StaticInstPtr	decode (PCStateBase &next_pc) override
	Decode an instruction or fetch it from the code cache. More...

StaticInstPtr	fetchRomMicroop (MicroPC micropc, StaticInstPtr curMacroop) override

Public Member Functions inherited from gem5::InstDecoder
template<typename MoreBytesType >
	InstDecoder (const InstDecoderParams &params, MoreBytesType *mb_buf)

template<class Type >
Type &	as ()

template<class Type >
const Type &	as () const

void *	moreBytesPtr () const

size_t	moreBytesSize () const

Addr	pcMask () const

bool	instReady () const
	Is an instruction ready to be decoded? More...

bool	needMoreBytes () const
	Can the decoder accept more data? More...

Public Member Functions inherited from gem5::SimObject
const Params &	params () const

	SimObject (const Params &p)

virtual	~SimObject ()

virtual void	init ()
	init() is called after all C++ SimObjects have been created and all ports are connected. More...

virtual void	loadState (CheckpointIn &cp)
	loadState() is called on each SimObject when restoring from a checkpoint. More...

virtual void	initState ()
	initState() is called on each SimObject when not restoring from a checkpoint. More...

virtual void	regProbePoints ()
	Register probe points for this object. More...

virtual void	regProbeListeners ()
	Register probe listeners for this object. More...

ProbeManager *	getProbeManager ()
	Get the probe manager for this object. More...

virtual Port &	getPort (const std::string &if_name, PortID idx=InvalidPortID)
	Get a port with a given name and index. More...

virtual void	startup ()
	startup() is the final initialization call before simulation. More...

DrainState	drain () override
	Provide a default implementation of the drain interface for objects that don't need draining. More...

virtual void	memWriteback ()
	Write back dirty buffers to memory using functional writes. More...

virtual void	memInvalidate ()
	Invalidate the contents of memory buffers. More...

void	serialize (CheckpointOut &cp) const override
	Serialize an object. More...

void	unserialize (CheckpointIn &cp) override
	Unserialize an object. More...

Public Member Functions inherited from gem5::EventManager
EventQueue *	eventQueue () const

void	schedule (Event &event, Tick when)

void	deschedule (Event &event)

void	reschedule (Event &event, Tick when, bool always=false)

void	schedule (Event *event, Tick when)

void	deschedule (Event *event)

void	reschedule (Event *event, Tick when, bool always=false)

void	wakeupEventQueue (Tick when=(Tick) -1)
	This function is not needed by the usual gem5 event loop but may be necessary in derived EventQueues which host gem5 on other schedulers. More...

void	setCurTick (Tick newVal)

	EventManager (EventManager &em)
	Event manger manages events in the event queue. More...

	EventManager (EventManager *em)

	EventManager (EventQueue *eq)

Public Member Functions inherited from gem5::Serializable
	Serializable ()

virtual	~Serializable ()

void	serializeSection (CheckpointOut &cp, const char *name) const
	Serialize an object into a new section. More...

void	serializeSection (CheckpointOut &cp, const std::string &name) const

void	unserializeSection (CheckpointIn &cp, const char *name)
	Unserialize an a child object. More...

void	unserializeSection (CheckpointIn &cp, const std::string &name)

Public Member Functions inherited from gem5::Drainable
DrainState	drainState () const
	Return the current drain state of an object. More...

virtual void	notifyFork ()
	Notify a child process of a fork. More...

Public Member Functions inherited from gem5::statistics::Group
	Group (Group parent, const char name=nullptr)
	Construct a new statistics group. More...

virtual	~Group ()

virtual void	regStats ()
	Callback to set stat parameters. More...

virtual void	resetStats ()
	Callback to reset stats. More...

virtual void	preDumpStats ()
	Callback before stats are dumped. More...

void	addStat (statistics::Info *info)
	Register a stat with this group. More...

const std::map< std::string, Group * > &	getStatGroups () const
	Get all child groups associated with this object. More...

const std::vector< Info * > &	getStats () const
	Get all stats associated with this object. More...

void	addStatGroup (const char name, Group block)
	Add a stat block as a child of this block. More...

const Info *	resolveStat (std::string name) const
	Resolve a stat by its name within this group. More...

void	mergeStatGroup (Group *block)
	Merge the contents (stats & children) of a block to this block. More...

	Group ()=delete

	Group (const Group &)=delete

Group &	operator= (const Group &)=delete

Public Member Functions inherited from gem5::Named
	Named (const std::string &name_)

virtual	~Named ()=default

virtual std::string	name () const

Protected Types
enum	State { ResetState, FromCacheState, PrefixState, Vex2Of2State, Vex2Of3State, Vex3Of3State, VexOpcodeState, OneByteOpcodeState, TwoByteOpcodeState, ThreeByte0F38OpcodeState, ThreeByte0F3AOpcodeState, ModRMState, SIBState, DisplacementState, ImmediateState, ErrorState }

using	MachInst = uint64_t

typedef RegVal	CacheKey
	Caching for decoded instruction objects. More...

typedef decode_cache::AddrMap< Decoder::InstBytes >	DecodePages

typedef std::unordered_map< CacheKey, DecodePages * >	AddrCacheMap

typedef std::unordered_map< CacheKey, decode_cache::InstMap< ExtMachInst > * >	InstCacheMap

Protected Member Functions
uint8_t	getNextByte ()

void	getImmediate (int &collected, uint64_t &current, int size)

void	updateOffsetState ()

void	consumeByte ()

void	consumeBytes (int numBytes)

State	doResetState ()

State	doFromCacheState ()

State	doPrefixState (uint8_t)

State	doVex2Of2State (uint8_t)

State	doVex2Of3State (uint8_t)

State	doVex3Of3State (uint8_t)

State	doVexOpcodeState (uint8_t)

State	doOneByteOpcodeState (uint8_t)

State	doTwoByteOpcodeState (uint8_t)

State	doThreeByte0F38OpcodeState (uint8_t)

State	doThreeByte0F3AOpcodeState (uint8_t)

State	doModRMState (uint8_t)

State	doSIBState (uint8_t)

State	doDisplacementState ()

State	doImmediateState ()

State	processOpcode (ByteTable &immTable, ByteTable &modrmTable, bool addrSizedImm=false)

State	processExtendedOpcode (ByteTable &immTable)

StaticInstPtr	decodeInst (ExtMachInst mach_inst)

StaticInstPtr	decode (ExtMachInst mach_inst, Addr addr)
	Decode a machine instruction. More...

void	process ()

Protected Member Functions inherited from gem5::Drainable
	Drainable ()

virtual	~Drainable ()

virtual void	drainResume ()
	Resume execution after a successful drain. More...

void	signalDrainDone () const
	Signal that an object is drained. More...

Protected Attributes
MachInst	fetchChunk

InstBytes *	instBytes = &dummy

int	chunkIdx

Addr	basePC = 0

Addr	origPC = 0

int	offset = 0

ExtMachInst	emi

X86Mode	mode = LongMode

X86SubMode	submode = SixtyFourBitMode

uint8_t	altOp = 0

uint8_t	defOp = 0

uint8_t	altAddr = 0

uint8_t	defAddr = 0

uint8_t	stack = 0

uint8_t	cpl = 0

int	displacementSize

int	immediateSize

int	immediateCollected

State	state = ResetState

DecodePages *	decodePages = nullptr

AddrCacheMap	addrCacheMap

decode_cache::InstMap< ExtMachInst > *	instMap = nullptr

Protected Attributes inherited from gem5::InstDecoder
void *	_moreBytesPtr

size_t	_moreBytesSize

Addr	_pcMask

bool	instDone = false

bool	outOfBytes = true

Protected Attributes inherited from gem5::SimObject
const SimObjectParams &	_params
	Cached copy of the object parameters. More...

Protected Attributes inherited from gem5::EventManager
EventQueue *	eventq
	A pointer to this object's event queue. More...

Static Protected Attributes
static InstBytes	dummy

static InstCacheMap	instCacheMap

Private Attributes
const typedef uint8_t	ByteTable [256]

Static Private Attributes
static const uint8_t	SizeTypeToSize [3][10]

static ByteTable	Prefixes [2]

static ByteTable	UsesModRMOneByte

static ByteTable	UsesModRMTwoByte

static ByteTable	UsesModRMThreeByte0F38

static ByteTable	UsesModRMThreeByte0F3A

static ByteTable	ImmediateTypeOneByte

static ByteTable	ImmediateTypeTwoByte

static ByteTable	ImmediateTypeThreeByte0F38

static ByteTable	ImmediateTypeThreeByte0F3A

static X86ISAInst::MicrocodeRom	microcodeRom

Additional Inherited Members
Public Types inherited from gem5::SimObject
typedef SimObjectParams	Params

Static Public Member Functions inherited from gem5::SimObject
static void	serializeAll (const std::string &cpt_dir)
	Create a checkpoint by serializing all SimObjects in the system. More...

static SimObject *	find (const char *name)
	Find the SimObject with the given name and return a pointer to it. More...

static void	setSimObjectResolver (SimObjectResolver *resolver)
	There is a single object name resolver, and it is only set when simulation is restoring from checkpoints. More...

static SimObjectResolver *	getSimObjectResolver ()
	There is a single object name resolver, and it is only set when simulation is restoring from checkpoints. More...

Static Public Member Functions inherited from gem5::Serializable
static const std::string &	currentSection ()
	Gets the fully-qualified name of the active section. More...

static void	generateCheckpointOut (const std::string &cpt_dir, std::ofstream &outstream)
	Generate a checkpoint file so that the serialization can be routed to it. More...

Detailed Description

Definition at line 56 of file decoder.hh.

Member Typedef Documentation

◆ AddrCacheMap

typedef std::unordered_map<CacheKey, DecodePages *> gem5::X86ISA::Decoder::AddrCacheMap

protected

Definition at line 240 of file decoder.hh.

◆ CacheKey

typedef RegVal gem5::X86ISA::Decoder::CacheKey

protected

Caching for decoded instruction objects.

Definition at line 236 of file decoder.hh.

◆ DecodePages

typedef decode_cache::AddrMap<Decoder::InstBytes> gem5::X86ISA::Decoder::DecodePages

protected

Definition at line 238 of file decoder.hh.

◆ InstCacheMap

typedef std::unordered_map< CacheKey, decode_cache::InstMap<ExtMachInst> *> gem5::X86ISA::Decoder::InstCacheMap

protected

Definition at line 245 of file decoder.hh.

◆ MachInst

using gem5::X86ISA::Decoder::MachInst = uint64_t

protected

Definition at line 77 of file decoder.hh.

Member Enumeration Documentation

◆ State

enum gem5::X86ISA::Decoder::State

protected

Enumerator
ResetState
FromCacheState
PrefixState
Vex2Of2State
Vex2Of3State
Vex3Of3State
VexOpcodeState
OneByteOpcodeState
TwoByteOpcodeState
ThreeByte0F38OpcodeState
ThreeByte0F3AOpcodeState
ModRMState
SIBState
DisplacementState
ImmediateState
ErrorState

Definition at line 187 of file decoder.hh.

Constructor & Destructor Documentation

◆ Decoder()

gem5::X86ISA::Decoder::Decoder ( const X86DecoderParams & p )

inline

Definition at line 258 of file decoder.hh.

References cpl, emi, mode, gem5::X86ISA::ExtMachInst::mode, gem5::X86ISA::ExtMachInst::reset(), and submode.

Member Function Documentation

◆ consumeByte()

void gem5::X86ISA::Decoder::consumeByte ( )

inlineprotected

Definition at line 164 of file decoder.hh.

References offset, and updateOffsetState().

Referenced by doModRMState(), doOneByteOpcodeState(), doPrefixState(), doSIBState(), doThreeByte0F38OpcodeState(), doThreeByte0F3AOpcodeState(), doTwoByteOpcodeState(), doVex2Of2State(), doVex2Of3State(), doVex3Of3State(), and doVexOpcodeState().

◆ consumeBytes()

void gem5::X86ISA::Decoder::consumeBytes ( int numBytes )

inlineprotected

Definition at line 171 of file decoder.hh.

References offset, and updateOffsetState().

Referenced by getImmediate().

◆ decode() [1/2]

StaticInstPtr gem5::X86ISA::Decoder::decode	(	ExtMachInst	mach_inst,
		Addr	addr
	)

protected

Decode a machine instruction.

Parameters

mach_inst The binary instruction to decode.

Return values

A	pointer to the corresponding StaticInst object.

Definition at line 678 of file decoder.cc.

References decodeInst(), DPRINTF, instMap, and gem5::X86ISA::si.

Referenced by decode().

◆ decode() [2/2]

StaticInstPtr gem5::X86ISA::Decoder::decode ( PCStateBase & pc )

overridevirtual

Decode an instruction or fetch it from the code cache.

This method decodes the currently pending pre-decoded instruction. Data must be fed to the decoder using moreBytes() until instReady() is true before calling this method.

Parameters

pc	Instruction pointer that we are decoding.

Returns: A pointer to a static instruction or NULL if the decoder isn't ready (see instReady()).

Implements gem5::InstDecoder.

Definition at line 696 of file decoder.cc.

References gem5::PCStateBase::as(), basePC, gem5::X86ISA::Decoder::InstBytes::chunks, decode(), emi, instBytes, gem5::InstDecoder::instDone, gem5::X86ISA::Decoder::InstBytes::lastOffset, gem5::X86ISA::mask, gem5::X86ISA::Decoder::InstBytes::masks, offset, origPC, gem5::X86ISA::Decoder::InstBytes::si, gem5::X86ISA::si, and updateNPC().

◆ decodeInst()

StaticInstPtr gem5::X86ISA::Decoder::decodeInst ( ExtMachInst mach_inst )

protected

Referenced by decode().

◆ doDisplacementState()

Decoder::State gem5::X86ISA::Decoder::doDisplacementState ( )

protected

Definition at line 588 of file decoder.cc.

References gem5::X86ISA::ExtMachInst::displacement, displacementSize, DisplacementState, gem5::X86ISA::ExtMachInst::dispSize, DPRINTF, emi, ErrorState, getImmediate(), immediateCollected, immediateSize, ImmediateState, gem5::InstDecoder::instDone, panic, and ResetState.

Referenced by process().

◆ doFromCacheState()

Decoder::State gem5::X86ISA::Decoder::doFromCacheState ( )

protected

Definition at line 148 of file decoder.cc.

References basePC, chunkIdx, gem5::X86ISA::Decoder::InstBytes::chunks, DPRINTF, fetchChunk, FromCacheState, instBytes, gem5::InstDecoder::instDone, gem5::X86ISA::Decoder::InstBytes::lastOffset, gem5::X86ISA::Decoder::InstBytes::masks, offset, origPC, gem5::InstDecoder::outOfBytes, PrefixState, ResetState, and gem5::X86ISA::Decoder::InstBytes::si.

Referenced by process().

◆ doImmediateState()

Decoder::State gem5::X86ISA::Decoder::doImmediateState ( )

protected

Definition at line 635 of file decoder.cc.

References DPRINTF, emi, ErrorState, getImmediate(), gem5::X86ISA::ExtMachInst::immediate, immediateCollected, immediateSize, ImmediateState, gem5::InstDecoder::instDone, and ResetState.

Referenced by process().

◆ doModRMState()

Decoder::State gem5::X86ISA::Decoder::doModRMState ( uint8_t nextByte )

protected

Definition at line 513 of file decoder.cc.

References gem5::X86ISA::ExtMachInst::addrSize, consumeByte(), displacementSize, DisplacementState, DPRINTF, emi, ErrorState, immediateSize, ImmediateState, gem5::InstDecoder::instDone, gem5::X86ISA::ExtMachInst::modRM, gem5::X86ISA::ExtMachInst::op, gem5::X86ISA::ExtMachInst::opcode, gem5::X86ISA::ExtMachInst::opSize, ResetState, SIBState, and gem5::X86ISA::ExtMachInst::type.

Referenced by process().

◆ doOneByteOpcodeState()

Decoder::State gem5::X86ISA::Decoder::doOneByteOpcodeState ( uint8_t nextByte )

protected

Definition at line 380 of file decoder.cc.

References consumeByte(), DPRINTF, emi, ErrorState, ImmediateTypeOneByte, gem5::X86ISA::ExtMachInst::op, gem5::X86ISA::ExtMachInst::opcode, processOpcode(), TwoByteOpcodeState, gem5::X86ISA::ExtMachInst::type, and UsesModRMOneByte.

Referenced by process().

◆ doPrefixState()

Decoder::State gem5::X86ISA::Decoder::doPrefixState ( uint8_t nextByte )

protected

◆ doResetState()

Decoder::State gem5::X86ISA::Decoder::doResetState ( )

protected

◆ doSIBState()

Decoder::State gem5::X86ISA::Decoder::doSIBState ( uint8_t nextByte )

protected

Definition at line 567 of file decoder.cc.

References consumeByte(), displacementSize, DisplacementState, DPRINTF, emi, ErrorState, immediateSize, ImmediateState, gem5::InstDecoder::instDone, gem5::X86ISA::ExtMachInst::modRM, ResetState, and gem5::X86ISA::ExtMachInst::sib.

Referenced by process().

◆ doThreeByte0F38OpcodeState()

Decoder::State gem5::X86ISA::Decoder::doThreeByte0F38OpcodeState ( uint8_t nextByte )

protected

Definition at line 425 of file decoder.cc.

References consumeByte(), DPRINTF, emi, ImmediateTypeThreeByte0F38, gem5::X86ISA::ExtMachInst::op, gem5::X86ISA::ExtMachInst::opcode, processOpcode(), gem5::X86ISA::ExtMachInst::type, and UsesModRMThreeByte0F38.

Referenced by process().

◆ doThreeByte0F3AOpcodeState()

Decoder::State gem5::X86ISA::Decoder::doThreeByte0F3AOpcodeState ( uint8_t nextByte )

protected

Definition at line 439 of file decoder.cc.

References consumeByte(), DPRINTF, emi, ImmediateTypeThreeByte0F3A, gem5::X86ISA::ExtMachInst::op, gem5::X86ISA::ExtMachInst::opcode, processOpcode(), gem5::X86ISA::ExtMachInst::type, and UsesModRMThreeByte0F3A.

Referenced by process().

◆ doTwoByteOpcodeState()

Decoder::State gem5::X86ISA::Decoder::doTwoByteOpcodeState ( uint8_t nextByte )

protected

Definition at line 402 of file decoder.cc.

References consumeByte(), DPRINTF, emi, ErrorState, ImmediateTypeTwoByte, gem5::X86ISA::ExtMachInst::op, gem5::X86ISA::ExtMachInst::opcode, processOpcode(), ThreeByte0F38OpcodeState, ThreeByte0F3AOpcodeState, gem5::X86ISA::ExtMachInst::type, and UsesModRMTwoByte.

Referenced by process().

◆ doVex2Of2State()

Decoder::State gem5::X86ISA::Decoder::doVex2Of2State ( uint8_t nextByte )

protected

Definition at line 248 of file decoder.cc.

References consumeByte(), emi, gem5::X86ISA::ExtMachInst::legacy, gem5::X86ISA::ExtMachInst::opcode, gem5::X86ISA::ExtMachInst::rex, gem5::X86ISA::ExtMachInst::type, gem5::X86ISA::ExtMachInst::vex, and VexOpcodeState.

Referenced by process().

◆ doVex2Of3State()

Decoder::State gem5::X86ISA::Decoder::doVex2Of3State ( uint8_t nextByte )

protected

Definition at line 278 of file decoder.cc.

References gem5::bits(), consumeByte(), emi, ImmediateTypeOneByte, gem5::InstDecoder::instDone, gem5::X86ISA::ExtMachInst::mode, gem5::X86ISA::ExtMachInst::op, gem5::X86ISA::ExtMachInst::opcode, processOpcode(), ResetState, gem5::X86ISA::ExtMachInst::rex, gem5::X86ISA::SixtyFourBitMode, gem5::X86ISA::ExtMachInst::type, UsesModRMOneByte, gem5::X86ISA::ExtMachInst::vex, and Vex3Of3State.

Referenced by process().

◆ doVex3Of3State()

Decoder::State gem5::X86ISA::Decoder::doVex3Of3State ( uint8_t nextByte )

protected

Definition at line 319 of file decoder.cc.

References gem5::bits(), consumeByte(), emi, ImmediateTypeOneByte, gem5::X86ISA::ExtMachInst::legacy, gem5::X86ISA::ExtMachInst::mode, gem5::X86ISA::ExtMachInst::op, gem5::X86ISA::ExtMachInst::opcode, processOpcode(), gem5::X86ISA::ExtMachInst::rex, gem5::X86ISA::SixtyFourBitMode, gem5::X86ISA::ExtMachInst::type, UsesModRMOneByte, gem5::X86ISA::ExtMachInst::vex, and VexOpcodeState.

Referenced by process().

◆ doVexOpcodeState()

Decoder::State gem5::X86ISA::Decoder::doVexOpcodeState ( uint8_t nextByte )

protected

Definition at line 356 of file decoder.cc.

References consumeByte(), DPRINTF, emi, ImmediateTypeThreeByte0F38, ImmediateTypeThreeByte0F3A, ImmediateTypeTwoByte, gem5::X86ISA::ExtMachInst::op, gem5::X86ISA::ExtMachInst::opcode, panic, processOpcode(), gem5::X86ISA::ExtMachInst::type, UsesModRMThreeByte0F38, UsesModRMThreeByte0F3A, and UsesModRMTwoByte.

Referenced by process().

◆ fetchRomMicroop()

StaticInstPtr gem5::X86ISA::Decoder::fetchRomMicroop	(	MicroPC	micropc,
		StaticInstPtr	curMacroop
	)

overridevirtual

Reimplemented from gem5::InstDecoder.

Definition at line 740 of file decoder.cc.

References gem5::X86ISAInst::MicrocodeRom::fetchMicroop(), and microcodeRom.

◆ getImmediate()

void gem5::X86ISA::Decoder::getImmediate	(	int &	collected,
		uint64_t &	current,
		int	size
	)

inlineprotected

Definition at line 122 of file decoder.hh.

References consumeBytes(), fetchChunk, immediateCollected, gem5::X86ISA::mask, and offset.

Referenced by doDisplacementState(), and doImmediateState().

◆ getNextByte()

uint8_t gem5::X86ISA::Decoder::getNextByte ( )

inlineprotected

Definition at line 116 of file decoder.hh.

References fetchChunk, and offset.

Referenced by process().

◆ moreBytes()

void gem5::X86ISA::Decoder::moreBytes	(	const PCStateBase &	pc,
		Addr	fetchPC
	)

inlineoverridevirtual

Feed data to the decoder.

A CPU model uses this interface to load instruction data into the decoder. Once enough data has been loaded (check with instReady()), a decoded instruction can be retrieved using decode(PCStateBase &).

This method is intended to support both fixed-length and variable-length instructions. Instruction data is fetch in MachInst blocks (which correspond to the size of a typical insturction). The method might need to be called multiple times if the instruction spans multiple blocks, in that case needMoreBytes() will return true and instReady() will return false.

The fetchPC parameter is used to indicate where in memory the instruction was fetched from. This is should be the same address as the pc. If fetching multiple blocks, it indicates where subsequent blocks are fetched from (pc + n * sizeof(MachInst)).

Parameters

pc	Instruction pointer that we are decoding.
fetchPC	The address this chunk was fetched from.

Implements gem5::InstDecoder.

Definition at line 329 of file decoder.hh.

References basePC, DPRINTF, fetchChunk, gem5::letoh(), offset, gem5::InstDecoder::outOfBytes, gem5::X86ISA::pc, and process().

◆ process()

void gem5::X86ISA::Decoder::process ( )

protected

◆ processExtendedOpcode()

State gem5::X86ISA::Decoder::processExtendedOpcode ( ByteTable & immTable )

protected

◆ processOpcode()

Decoder::State gem5::X86ISA::Decoder::processOpcode	(	ByteTable &	immTable,
		ByteTable &	modrmTable,
		bool	addrSizedImm = `false`
	)

protected

◆ reset()

void gem5::X86ISA::Decoder::reset ( )

inlineoverridevirtual

Reimplemented from gem5::InstDecoder.

Definition at line 320 of file decoder.hh.

References gem5::InstDecoder::reset(), ResetState, and state.

◆ setM5Reg()

void gem5::X86ISA::Decoder::setM5Reg ( HandyM5Reg m5Reg )

inline

Definition at line 267 of file decoder.hh.

References addrCacheMap, altAddr, altOp, cpl, decodePages, defAddr, defOp, emi, instCacheMap, instMap, mode, gem5::X86ISA::ExtMachInst::mode, stack, and submode.

◆ takeOverFrom()

void gem5::X86ISA::Decoder::takeOverFrom ( InstDecoder * old )

inlineoverridevirtual

Take over the state from an old decoder when switching CPUs.

Parameters

old	Decoder used in old CPU

Reimplemented from gem5::InstDecoder.

Definition at line 299 of file decoder.hh.

References altAddr, altOp, cpl, defAddr, defOp, emi, mode, gem5::X86ISA::ExtMachInst::mode, stack, submode, and gem5::InstDecoder::takeOverFrom().

◆ updateNPC()

void gem5::X86ISA::Decoder::updateNPC ( X86ISA::PCState & nextPC )

inline

Definition at line 340 of file decoder.hh.

References basePC, DPRINTF, gem5::GenericISA::PCStateWithNext::npc(), offset, origPC, gem5::GenericISA::PCStateWithNext::pc(), and gem5::X86ISA::PCState::size().

Referenced by decode().

◆ updateOffsetState()

void gem5::X86ISA::Decoder::updateOffsetState ( )

inlineprotected

Definition at line 146 of file decoder.hh.

References basePC, chunkIdx, gem5::X86ISA::Decoder::InstBytes::chunks, DPRINTF, fetchChunk, instBytes, offset, and gem5::InstDecoder::outOfBytes.

Referenced by consumeByte(), and consumeBytes().

Member Data Documentation

◆ addrCacheMap

AddrCacheMap gem5::X86ISA::Decoder::addrCacheMap

protected

Definition at line 241 of file decoder.hh.

Referenced by setM5Reg().

◆ altAddr

uint8_t gem5::X86ISA::Decoder::altAddr = 0

protected

Definition at line 109 of file decoder.hh.

Referenced by processOpcode(), setM5Reg(), and takeOverFrom().

◆ altOp

uint8_t gem5::X86ISA::Decoder::altOp = 0

protected

Definition at line 107 of file decoder.hh.

Referenced by processOpcode(), setM5Reg(), and takeOverFrom().

◆ basePC

Addr gem5::X86ISA::Decoder::basePC = 0

protected

Definition at line 97 of file decoder.hh.

Referenced by decode(), doFromCacheState(), doResetState(), moreBytes(), updateNPC(), and updateOffsetState().

◆ ByteTable

const typedef uint8_t gem5::X86ISA::Decoder::ByteTable[256]

private

Definition at line 61 of file decoder.hh.

◆ chunkIdx

int gem5::X86ISA::Decoder::chunkIdx

protected

Definition at line 95 of file decoder.hh.

Referenced by doFromCacheState(), doResetState(), and updateOffsetState().

◆ cpl

uint8_t gem5::X86ISA::Decoder::cpl = 0

protected

Definition at line 113 of file decoder.hh.

Referenced by Decoder(), setM5Reg(), and takeOverFrom().

◆ decodePages

DecodePages* gem5::X86ISA::Decoder::decodePages = nullptr

protected

Definition at line 239 of file decoder.hh.

Referenced by doResetState(), and setM5Reg().

◆ defAddr

uint8_t gem5::X86ISA::Decoder::defAddr = 0

protected

Definition at line 110 of file decoder.hh.

Referenced by processOpcode(), setM5Reg(), and takeOverFrom().

◆ defOp

uint8_t gem5::X86ISA::Decoder::defOp = 0

protected

Definition at line 108 of file decoder.hh.

Referenced by processOpcode(), setM5Reg(), and takeOverFrom().

◆ displacementSize

int gem5::X86ISA::Decoder::displacementSize

protected

Definition at line 180 of file decoder.hh.

Referenced by doDisplacementState(), doModRMState(), and doSIBState().

◆ dummy

Decoder::InstBytes gem5::X86ISA::Decoder::dummy

staticprotected

Definition at line 90 of file decoder.hh.

◆ emi

ExtMachInst gem5::X86ISA::Decoder::emi

protected

Definition at line 103 of file decoder.hh.

Referenced by decode(), Decoder(), doDisplacementState(), doImmediateState(), doModRMState(), doOneByteOpcodeState(), doPrefixState(), doResetState(), doSIBState(), doThreeByte0F38OpcodeState(), doThreeByte0F3AOpcodeState(), doTwoByteOpcodeState(), doVex2Of2State(), doVex2Of3State(), doVex3Of3State(), doVexOpcodeState(), processOpcode(), setM5Reg(), and takeOverFrom().

◆ fetchChunk

MachInst gem5::X86ISA::Decoder::fetchChunk

protected

Definition at line 93 of file decoder.hh.

Referenced by doFromCacheState(), getImmediate(), getNextByte(), moreBytes(), process(), and updateOffsetState().

◆ immediateCollected

int gem5::X86ISA::Decoder::immediateCollected

protected

Definition at line 185 of file decoder.hh.

Referenced by doDisplacementState(), doImmediateState(), doResetState(), and getImmediate().

◆ immediateSize

int gem5::X86ISA::Decoder::immediateSize

protected

Definition at line 182 of file decoder.hh.

Referenced by doDisplacementState(), doImmediateState(), doModRMState(), doSIBState(), and processOpcode().

◆ ImmediateTypeOneByte

const Decoder::ByteTable gem5::X86ISA::Decoder::ImmediateTypeOneByte

staticprivate

Initial value:

=
    {    
 
 0 , 0 , 0 , 0 , BY, ZW, 0 , 0 , 0 , 0 , 0 , 0 , BY, ZW, 0 , 0 ,
 0 , 0 , 0 , 0 , BY, ZW, 0 , 0 , 0 , 0 , 0 , 0 , BY, ZW, 0 , 0 ,
 0 , 0 , 0 , 0 , BY, ZW, 0 , 0 , 0 , 0 , 0 , 0 , BY, ZW, 0 , 0 ,
 0 , 0 , 0 , 0 , BY, ZW, 0 , 0 , 0 , 0 , 0 , 0 , BY, ZW, 0 , 0 ,
 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 ,
 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 ,
 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , ZW, ZW, BY, BY, 0 , 0 , 0 , 0 ,
 BY, BY, BY, BY, BY, BY, BY, BY, BY, BY, BY, BY, BY, BY, BY, BY,
 BY, ZW, BY, BY, 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 ,
 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , PO, 0 , 0 , 0 , 0 , 0 ,
 VW, VW, VW, VW, 0 , 0 , 0 , 0 , BY, ZW, 0 , 0 , 0 , 0 , 0 , 0 ,
 BY, BY, BY, BY, BY, BY, BY, BY, VW, VW, VW, VW, VW, VW, VW, VW,
 BY, BY, WO, 0 , 0 , 0 , BY, ZW, EN, 0 , WO, 0 , 0 , BY, 0 , 0 ,
 0 , 0 , 0 , 0 , BY, BY, 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 ,
 BY, BY, BY, BY, BY, BY, BY, BY, ZW, ZW, PO, BY, 0 , 0 , 0 , 0 ,
 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0
    }

Definition at line 69 of file decoder.hh.

Referenced by doOneByteOpcodeState(), doVex2Of3State(), and doVex3Of3State().

◆ ImmediateTypeThreeByte0F38

const Decoder::ByteTable gem5::X86ISA::Decoder::ImmediateTypeThreeByte0F38

staticprivate

Initial value:

=
    {    
 
, 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 ,
, 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 ,
, 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 ,
, 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 ,
, 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 ,
, 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 ,
, 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 ,
, 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 ,
, 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 ,
, 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 ,
, 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 ,
, 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 ,
, 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 ,
, 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 ,
, 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 ,
, 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0
    }

Definition at line 71 of file decoder.hh.

Referenced by doThreeByte0F38OpcodeState(), and doVexOpcodeState().

◆ ImmediateTypeThreeByte0F3A

const Decoder::ByteTable gem5::X86ISA::Decoder::ImmediateTypeThreeByte0F3A

staticprivate

Initial value:

=
    {    
 
 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , BY, BY, BY, BY, BY, BY, BY, BY,
 0 , 0 , 0 , 0 , BY, BY, BY, BY, 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 ,
 BY, BY, BY, 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 ,
 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 ,
 BY, BY, BY, 0 , BY, 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 ,
 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 ,
 BY, BY, BY, BY, 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 ,
 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 ,
 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 ,
 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 ,
 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 ,
 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 ,
 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 ,
 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , BY,
 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 ,
 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0
    }

Definition at line 72 of file decoder.hh.

Referenced by doThreeByte0F3AOpcodeState(), and doVexOpcodeState().

◆ ImmediateTypeTwoByte

const Decoder::ByteTable gem5::X86ISA::Decoder::ImmediateTypeTwoByte

staticprivate

Initial value:

=
    {    
 
, 0 , 0 , 0 , WO, 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , BY,
, 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 ,
, 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 ,
, 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 ,
, 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 ,
, 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 ,
, 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 ,
 BY, BY, BY, BY, 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 ,
 ZW, ZW, ZW, ZW, ZW, ZW, ZW, ZW, ZW, ZW, ZW, ZW, ZW, ZW, ZW, ZW,
, 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 ,
, 0 , 0 , 0 , BY, 0 , 0 , 0 , 0 , 0 , 0 , 0 , BY, 0 , 0 , 0 ,
, 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , BY, 0 , 0 , 0 , 0 , 0 ,
, 0 , BY, 0 , BY, BY, BY, 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 ,
, 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 ,
, 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 ,
, 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0
    }

Definition at line 70 of file decoder.hh.

Referenced by doTwoByteOpcodeState(), and doVexOpcodeState().

◆ instBytes

InstBytes* gem5::X86ISA::Decoder::instBytes = &dummy

protected

Definition at line 94 of file decoder.hh.

Referenced by decode(), doFromCacheState(), doResetState(), process(), and updateOffsetState().

◆ instCacheMap

Decoder::InstCacheMap gem5::X86ISA::Decoder::instCacheMap

staticprotected

Definition at line 246 of file decoder.hh.

Referenced by setM5Reg().

◆ instMap

decode_cache::InstMap<ExtMachInst>* gem5::X86ISA::Decoder::instMap = nullptr

protected

Definition at line 243 of file decoder.hh.

Referenced by decode(), and setM5Reg().

◆ microcodeRom

X86ISAInst::MicrocodeRom gem5::X86ISA::Decoder::microcodeRom

staticprivate

Definition at line 74 of file decoder.hh.

Referenced by fetchRomMicroop().

◆ mode

X86Mode gem5::X86ISA::Decoder::mode = LongMode

protected

Definition at line 105 of file decoder.hh.

Referenced by Decoder(), setM5Reg(), and takeOverFrom().

◆ offset

int gem5::X86ISA::Decoder::offset = 0

protected

Definition at line 101 of file decoder.hh.

Referenced by consumeByte(), consumeBytes(), decode(), doFromCacheState(), doResetState(), getImmediate(), getNextByte(), moreBytes(), updateNPC(), and updateOffsetState().

◆ origPC

Addr gem5::X86ISA::Decoder::origPC = 0

protected

Definition at line 99 of file decoder.hh.

Referenced by decode(), doFromCacheState(), doResetState(), and updateNPC().

◆ Prefixes

const Decoder::ByteTable gem5::X86ISA::Decoder::Prefixes

staticprivate

Definition at line 62 of file decoder.hh.

◆ SizeTypeToSize

const uint8_t gem5::X86ISA::Decoder::SizeTypeToSize

staticprivate

Initial value:

=
    {
 
        {0,    1,   2,   4,    8,    16,   2,    2,    3,    4      }, 
        {0,    1,   2,   4,    8,    16,   4,    4,    3,    6      }, 
        {0,    1,   2,   4,    8,    16,   8,    4,    3,    0      }  
    }

Definition at line 60 of file decoder.hh.

Referenced by processOpcode().

◆ stack

uint8_t gem5::X86ISA::Decoder::stack = 0

protected

Definition at line 111 of file decoder.hh.

Referenced by processOpcode(), setM5Reg(), and takeOverFrom().

◆ state

State gem5::X86ISA::Decoder::state = ResetState

protected

Definition at line 208 of file decoder.hh.

Referenced by process(), and reset().

◆ submode

X86SubMode gem5::X86ISA::Decoder::submode = SixtyFourBitMode

protected

Definition at line 106 of file decoder.hh.

Referenced by Decoder(), setM5Reg(), and takeOverFrom().

◆ UsesModRMOneByte

const Decoder::ByteTable gem5::X86ISA::Decoder::UsesModRMOneByte

staticprivate

Initial value:

=
    {    
 
, 1 , 1 , 1 , 0 , 0 , 0 , 0 , 1 , 1 , 1 , 1 , 0 , 0 , 0 , 0,
, 1 , 1 , 1 , 0 , 0 , 0 , 0 , 1 , 1 , 1 , 1 , 0 , 0 , 0 , 0,
, 1 , 1 , 1 , 0 , 0 , 0 , 0 , 1 , 1 , 1 , 1 , 0 , 0 , 0 , 0,
, 1 , 1 , 1 , 0 , 0 , 0 , 0 , 1 , 1 , 1 , 1 , 0 , 0 , 0 , 0,
, 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0,
, 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0,
, 0 , 1 , 1 , 0 , 0 , 0 , 0 , 0 , 1 , 0 , 1 , 0 , 0 , 0 , 0,
, 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0,
, 1 , 1 , 1 , 1 , 1 , 1 , 1 , 1 , 1 , 1 , 1 , 1 , 1 , 1 , 1,
, 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0,
, 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0,
, 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0,
, 1 , 0 , 0 , 1 , 1 , 1 , 1 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0,
, 1 , 1 , 1 , 0 , 0 , 0 , 0 , 1 , 1 , 1 , 1 , 1 , 1 , 1 , 1,
, 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0,
, 0 , 0 , 0 , 0 , 0 , 1 , 1 , 0 , 0 , 0 , 0 , 0 , 0 , 1 , 1
    }

Definition at line 64 of file decoder.hh.

Referenced by doOneByteOpcodeState(), doVex2Of3State(), and doVex3Of3State().

◆ UsesModRMThreeByte0F38

const Decoder::ByteTable gem5::X86ISA::Decoder::UsesModRMThreeByte0F38

staticprivate

Initial value:

=
    {    
 
, 1 , 1 , 1 , 1 , 1 , 1 , 1 , 1 , 1 , 1 , 1 , 0 , 0 , 0 , 0,
, 0 , 0 , 0 , 1 , 1 , 0 , 1 , 0 , 0 , 0 , 0 , 1 , 1 , 1 , 0,
, 1 , 1 , 1 , 1 , 1 , 0 , 0 , 1 , 1 , 1 , 1 , 0 , 0 , 0 , 0,
, 1 , 1 , 1 , 1 , 1 , 0 , 1 , 1 , 1 , 1 , 1 , 1 , 1 , 1 , 1,
, 1 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0,
, 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0,
, 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0,
, 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0,
, 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0,
, 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0,
, 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0,
, 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0,
, 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0,
, 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 1 , 1 , 1 , 1 , 1,
, 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0,
, 1 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0
    }

Definition at line 66 of file decoder.hh.

Referenced by doThreeByte0F38OpcodeState(), and doVexOpcodeState().

◆ UsesModRMThreeByte0F3A

const Decoder::ByteTable gem5::X86ISA::Decoder::UsesModRMThreeByte0F3A

staticprivate

Initial value:

=
    {    
 
, 0 , 0 , 0 , 0 , 0 , 0 , 0 , 1 , 1 , 1 , 1 , 1 , 1 , 1 , 1,
, 0 , 0 , 0 , 1 , 1 , 1 , 1 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0,
, 1 , 1 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0,
, 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0,
, 1 , 1 , 0 , 1 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0,
, 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0,
, 1 , 1 , 1 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0,
, 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0,
, 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0,
, 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0,
, 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0,
, 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0,
, 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0,
, 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 1,
, 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0,
, 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0
    }

Definition at line 67 of file decoder.hh.

Referenced by doThreeByte0F3AOpcodeState(), and doVexOpcodeState().

◆ UsesModRMTwoByte

const Decoder::ByteTable gem5::X86ISA::Decoder::UsesModRMTwoByte

staticprivate

Initial value:

=
    {    
 
, 1 , 1 , 1 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 1 , 0 , 1,
, 1 , 1 , 1 , 1 , 1 , 1 , 1 , 1 , 1 , 1 , 1 , 1 , 1 , 1 , 1,
, 1 , 1 , 1 , 1 , 0 , 1 , 0 , 1 , 1 , 1 , 1 , 1 , 1 , 1 , 1,
, 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0,
, 1 , 1 , 1 , 1 , 1 , 1 , 1 , 1 , 1 , 1 , 1 , 1 , 1 , 1 , 1,
, 1 , 1 , 1 , 1 , 1 , 1 , 1 , 1 , 1 , 1 , 1 , 1 , 1 , 1 , 1,
, 1 , 1 , 1 , 1 , 1 , 1 , 1 , 1 , 1 , 1 , 1 , 1 , 1 , 1 , 1,
, 1 , 1 , 1 , 1 , 1 , 1 , 0 , 0 , 0 , 0 , 0 , 1 , 1 , 1 , 1,
, 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0,
, 1 , 1 , 1 , 1 , 1 , 1 , 1 , 1 , 1 , 1 , 1 , 1 , 1 , 1 , 1,
, 0 , 0 , 1 , 1 , 1 , 1 , 1 , 0 , 0 , 0 , 1 , 1 , 1 , 1 , 1,
, 1 , 1 , 1 , 1 , 1 , 1 , 1 , 1 , 0 , 1 , 1 , 1 , 1 , 1 , 1,
, 1 , 1 , 1 , 1 , 1 , 1 , 1 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0,
, 1 , 1 , 1 , 1 , 1 , 1 , 1 , 1 , 1 , 1 , 1 , 1 , 1 , 1 , 1,
, 1 , 1 , 1 , 1 , 1 , 1 , 1 , 1 , 1 , 1 , 1 , 1 , 1 , 1 , 1,
, 1 , 1 , 1 , 1 , 1 , 1 , 1 , 1 , 1 , 1 , 1 , 1 , 1 , 1 , 0
    }

Definition at line 65 of file decoder.hh.

Referenced by doTwoByteOpcodeState(), and doVexOpcodeState().

The documentation for this class was generated from the following files:

arch/x86/decoder.hh
arch/x86/decoder.cc
arch/x86/decoder_tables.cc

Classes

Public Member Functions

Protected Types

Protected Member Functions

Protected Attributes

Static Protected Attributes

Private Attributes

Static Private Attributes

Additional Inherited Members

Detailed Description

Member Typedef Documentation

◆ AddrCacheMap

◆ CacheKey

◆ DecodePages

◆ InstCacheMap

◆ MachInst

Member Enumeration Documentation

◆ State

Constructor & Destructor Documentation

◆ Decoder()

Member Function Documentation

◆ consumeByte()

◆ consumeBytes()

◆ decode() [1/2]

◆ decode() [2/2]

◆ decodeInst()

◆ doDisplacementState()

◆ doFromCacheState()

◆ doImmediateState()

◆ doModRMState()

◆ doOneByteOpcodeState()

◆ doPrefixState()

◆ doResetState()

◆ doSIBState()

◆ doThreeByte0F38OpcodeState()

◆ doThreeByte0F3AOpcodeState()

◆ doTwoByteOpcodeState()

◆ doVex2Of2State()

◆ doVex2Of3State()

◆ doVex3Of3State()

◆ doVexOpcodeState()

◆ fetchRomMicroop()

◆ getImmediate()

◆ getNextByte()

◆ moreBytes()

◆ process()

◆ processExtendedOpcode()

◆ processOpcode()

◆ reset()

◆ setM5Reg()

◆ takeOverFrom()

◆ updateNPC()

◆ updateOffsetState()

Member Data Documentation

◆ addrCacheMap

◆ altAddr

◆ altOp

◆ basePC

◆ ByteTable

◆ chunkIdx

◆ cpl

◆ decodePages

◆ defAddr

◆ defOp

◆ displacementSize

◆ dummy

◆ emi

◆ fetchChunk

◆ immediateCollected

◆ immediateSize

◆ ImmediateTypeOneByte

◆ ImmediateTypeThreeByte0F38

◆ ImmediateTypeThreeByte0F3A

◆ ImmediateTypeTwoByte

◆ instBytes

◆ instCacheMap

◆ instMap

◆ microcodeRom

◆ mode

◆ offset