gem5::minor::BranchData Class Reference

Forward data betwen Execute and Fetch1 carrying change-of-address/stream information. More...

#include <pipe_data.hh>

Public Types
enum	Reason {   NoBranch, CorrectlyPredictedBranch, UnpredictedBranch, BranchPrediction,   BadlyPredictedBranchTarget, BadlyPredictedBranch, SuspendThread, Interrupt,   HaltFetch }

Public Member Functions
	BranchData ()
	BranchData (Reason reason_, ThreadID thread_id, InstSeqNum new_stream_seq_num, InstSeqNum new_prediction_seq_num, TheISA::PCState target, MinorDynInstPtr inst_)
bool	isBubble () const
bool	isStreamChange () const
	As static isStreamChange but on this branch data. More...
bool	isBranch () const
	As static isBranch but on this branch data. More...
void	reportData (std::ostream &os) const
	ReportIF interface. More...

Static Public Member Functions
static bool	isStreamChange (const BranchData::Reason reason)
	Is a request with this reason actually a request to change the PC rather than a bubble or branch prediction information. More...
static bool	isBranch (const BranchData::Reason reason)
	Is a request with this reason actually a 'real' branch, that is, a stream change that's not just an instruction to Fetch1 to halt or wake up. More...
static BranchData	bubble ()
	BubbleIF interface. More...

Public Attributes
Reason	reason
	Explanation for this branch. More...
ThreadID	threadId
	ThreadID associated with branch. More...
InstSeqNum	newStreamSeqNum
	Sequence number of new stream/prediction to be adopted. More...
InstSeqNum	newPredictionSeqNum
TheISA::PCState	target
	Starting PC of that stream. More...
MinorDynInstPtr	inst
	Instruction which caused this branch. More...

Detailed Description

Forward data betwen Execute and Fetch1 carrying change-of-address/stream information.

Definition at line 66 of file pipe_data.hh.

Member Enumeration Documentation

Reason

enum gem5::minor::BranchData::Reason

Enumerator
NoBranch
CorrectlyPredictedBranch
UnpredictedBranch
BranchPrediction
BadlyPredictedBranchTarget
BadlyPredictedBranch
SuspendThread
Interrupt
HaltFetch

Definition at line 69 of file pipe_data.hh.

Constructor & Destructor Documentation

BranchData() [1/2]

gem5::minor::BranchData::BranchData ( )

inline

Definition at line 129 of file pipe_data.hh.

Referenced by bubble().

BranchData() [2/2]

gem5::minor::BranchData::BranchData ( Reason  reason_, ThreadID  thread_id, InstSeqNum  new_stream_seq_num, InstSeqNum  new_prediction_seq_num, TheISA::PCState  target, MinorDynInstPtr  inst_  )

inline

Definition at line 135 of file pipe_data.hh.

Member Function Documentation

bubble()

static BranchData gem5::minor::BranchData::bubble ( )

inlinestatic

BubbleIF interface.

Definition at line 151 of file pipe_data.hh.

References BranchData().

Referenced by gem5::minor::Execute::evaluate().

isBranch() [1/2]

bool gem5::minor::BranchData::isBranch ( ) const

inline

As static isBranch but on this branch data.

Definition at line 158 of file pipe_data.hh.

References isBranch(), and reason.

Referenced by isBranch().

isBranch() [2/2]

bool gem5::minor::BranchData::isBranch ( const BranchData::Reason  reason )

static

Is a request with this reason actually a 'real' branch, that is, a stream change that's not just an instruction to Fetch1 to halt or wake up.

Definition at line 113 of file pipe_data.cc.

References BadlyPredictedBranch, BadlyPredictedBranchTarget, BranchPrediction, CorrectlyPredictedBranch, HaltFetch, Interrupt, NoBranch, reason, SuspendThread, and UnpredictedBranch.

isBubble()

bool gem5::minor::BranchData::isBubble ( ) const

inline

Definition at line 152 of file pipe_data.hh.

References NoBranch, and reason.

Referenced by gem5::minor::Execute::commitInst(), gem5::minor::Fetch2::evaluate(), gem5::minor::Execute::evaluate(), gem5::minor::Fetch1::evaluate(), and reportData().

isStreamChange() [1/2]

bool gem5::minor::BranchData::isStreamChange ( ) const

inline

As static isStreamChange but on this branch data.

Definition at line 155 of file pipe_data.hh.

References isStreamChange(), and reason.

Referenced by isStreamChange(), and gem5::minor::Execute::updateBranchData().

isStreamChange() [2/2]

bool gem5::minor::BranchData::isStreamChange ( const BranchData::Reason  reason )

static

Is a request with this reason actually a request to change the PC rather than a bubble or branch prediction information.

Definition at line 85 of file pipe_data.cc.

References BadlyPredictedBranch, BadlyPredictedBranchTarget, BranchPrediction, CorrectlyPredictedBranch, HaltFetch, Interrupt, NoBranch, reason, SuspendThread, and UnpredictedBranch.

Referenced by gem5::minor::Execute::commit(), gem5::minor::Fetch2::evaluate(), and gem5::minor::Fetch1::evaluate().

reportData()

void gem5::minor::BranchData::reportData

(

std::ostream &

os

)

const

ReportIF interface.

Definition at line 141 of file pipe_data.cc.

References inst, isBubble(), newPredictionSeqNum, newStreamSeqNum, gem5::X86ISA::os, reason, and target.

Member Data Documentation

inst

MinorDynInstPtr gem5::minor::BranchData::inst

Instruction which caused this branch.

Definition at line 126 of file pipe_data.hh.

Referenced by gem5::minor::operator<<(), reportData(), and gem5::minor::Fetch2::updateBranchPrediction().

newPredictionSeqNum

InstSeqNum gem5::minor::BranchData::newPredictionSeqNum

Definition at line 120 of file pipe_data.hh.

Referenced by gem5::minor::operator<<(), reportData(), and gem5::minor::Fetch1::updateExpectedSeqNums().

newStreamSeqNum

InstSeqNum gem5::minor::BranchData::newStreamSeqNum

Sequence number of new stream/prediction to be adopted.

Definition at line 119 of file pipe_data.hh.

Referenced by gem5::minor::Fetch1::evaluate(), gem5::minor::operator<<(), reportData(), and gem5::minor::Fetch1::updateExpectedSeqNums().

reason

Reason gem5::minor::BranchData::reason

Explanation for this branch.

Definition at line 113 of file pipe_data.hh.

Referenced by gem5::minor::Fetch1::changeStream(), isBranch(), isBubble(), isStreamChange(), gem5::minor::operator<<(), reportData(), and gem5::minor::Fetch2::updateBranchPrediction().

target

TheISA::PCState gem5::minor::BranchData::target

Starting PC of that stream.

Definition at line 123 of file pipe_data.hh.

Referenced by gem5::minor::Fetch1::changeStream(), gem5::minor::operator<<(), gem5::minor::Fetch2::predictBranch(), reportData(), and gem5::minor::Fetch2::updateBranchPrediction().

threadId

ThreadID gem5::minor::BranchData::threadId

ThreadID associated with branch.

Definition at line 116 of file pipe_data.hh.

Referenced by gem5::minor::Fetch1::changeStream(), gem5::minor::Fetch2::evaluate(), gem5::minor::Fetch1::evaluate(), and gem5::minor::Fetch1::updateExpectedSeqNums().

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

• cpu/minor/pipe_data.hh
• cpu/minor/pipe_data.cc