diff options
Diffstat (limited to 'src/cpu/base_dyn_inst.hh')
| -rw-r--r-- | src/cpu/base_dyn_inst.hh | 202 |
1 files changed, 85 insertions, 117 deletions
diff --git a/src/cpu/base_dyn_inst.hh b/src/cpu/base_dyn_inst.hh index fc9bf8b94..f188e661c 100644 --- a/src/cpu/base_dyn_inst.hh +++ b/src/cpu/base_dyn_inst.hh @@ -31,6 +31,7 @@ #ifndef __CPU_BASE_DYN_INST_HH__ #define __CPU_BASE_DYN_INST_HH__ +#include <bitset> #include <list> #include <string> @@ -126,56 +127,34 @@ class BaseDynInst : public FastAlloc, public RefCounted /** The sequence number of the instruction. */ InstSeqNum seqNum; - /** Is the instruction in the IQ */ - bool iqEntry; - - /** Is the instruction in the ROB */ - bool robEntry; - - /** Is the instruction in the LSQ */ - bool lsqEntry; - - /** Is the instruction completed. */ - bool completed; - - /** Is the instruction's result ready. */ - bool resultReady; - - /** Can this instruction issue. */ - bool canIssue; - - /** Has this instruction issued. */ - bool issued; - - /** Has this instruction executed (or made it through execute) yet. */ - bool executed; - - /** Can this instruction commit. */ - bool canCommit; - - /** Is this instruction committed. */ - bool committed; - - /** Is this instruction squashed. */ - bool squashed; - - /** Is this instruction squashed in the instruction queue. */ - bool squashedInIQ; - - /** Is this instruction squashed in the instruction queue. */ - bool squashedInLSQ; - - /** Is this instruction squashed in the instruction queue. */ - bool squashedInROB; - - /** Is this a recover instruction. */ - bool recoverInst; - - /** Is this a thread blocking instruction. */ - bool blockingInst; /* this inst has called thread_block() */ + enum Status { + IqEntry, /// Instruction is in the IQ + RobEntry, /// Instruction is in the ROB + LsqEntry, /// Instruction is in the LSQ + Completed, /// Instruction has completed + ResultReady, /// Instruction has its result + CanIssue, /// Instruction can issue and execute + Issued, /// Instruction has issued + Executed, /// Instruction has executed + CanCommit, /// Instruction can commit + AtCommit, /// Instruction has reached commit + Committed, /// Instruction has committed + Squashed, /// Instruction is squashed + SquashedInIQ, /// Instruction is squashed in the IQ + SquashedInLSQ, /// Instruction is squashed in the LSQ + SquashedInROB, /// Instruction is squashed in the ROB + RecoverInst, /// Is a recover instruction + BlockingInst, /// Is a blocking instruction + ThreadsyncWait, /// Is a thread synchronization instruction + SerializeBefore, /// Needs to serialize on + /// instructions ahead of it + SerializeAfter, /// Needs to serialize instructions behind it + SerializeHandled, /// Serialization has been handled + NumStatus + }; - /** Is this a thread syncrhonization instruction. */ - bool threadsyncWait; + /** The status of this BaseDynInst. Several bits can be set. */ + std::bitset<NumStatus> status; /** The thread this instruction is from. */ short threadNumber; @@ -216,12 +195,6 @@ class BaseDynInst : public FastAlloc, public RefCounted /** The memory request flags (from translation). */ unsigned memReqFlags; - /** The size of the data to be stored. */ - int storeSize; - - /** The data to be stored. */ - IntReg storeData; - union Result { uint64_t integer; float fp; @@ -338,9 +311,9 @@ class BaseDynInst : public FastAlloc, public RefCounted bool isThreadSync() const { return staticInst->isThreadSync(); } bool isSerializing() const { return staticInst->isSerializing(); } bool isSerializeBefore() const - { return staticInst->isSerializeBefore() || serializeBefore; } + { return staticInst->isSerializeBefore() || status[SerializeBefore]; } bool isSerializeAfter() const - { return staticInst->isSerializeAfter() || serializeAfter; } + { return staticInst->isSerializeAfter() || status[SerializeAfter]; } bool isMemBarrier() const { return staticInst->isMemBarrier(); } bool isWriteBarrier() const { return staticInst->isWriteBarrier(); } bool isNonSpeculative() const { return staticInst->isNonSpeculative(); } @@ -349,41 +322,32 @@ class BaseDynInst : public FastAlloc, public RefCounted bool isUnverifiable() const { return staticInst->isUnverifiable(); } /** Temporarily sets this instruction as a serialize before instruction. */ - void setSerializeBefore() { serializeBefore = true; } + void setSerializeBefore() { status.set(SerializeBefore); } /** Clears the serializeBefore part of this instruction. */ - void clearSerializeBefore() { serializeBefore = false; } + void clearSerializeBefore() { status.reset(SerializeBefore); } /** Checks if this serializeBefore is only temporarily set. */ - bool isTempSerializeBefore() { return serializeBefore; } - - /** Tracks if instruction has been externally set as serializeBefore. */ - bool serializeBefore; + bool isTempSerializeBefore() { return status[SerializeBefore]; } /** Temporarily sets this instruction as a serialize after instruction. */ - void setSerializeAfter() { serializeAfter = true; } + void setSerializeAfter() { status.set(SerializeAfter); } /** Clears the serializeAfter part of this instruction.*/ - void clearSerializeAfter() { serializeAfter = false; } + void clearSerializeAfter() { status.reset(SerializeAfter); } /** Checks if this serializeAfter is only temporarily set. */ - bool isTempSerializeAfter() { return serializeAfter; } + bool isTempSerializeAfter() { return status[SerializeAfter]; } - /** Tracks if instruction has been externally set as serializeAfter. */ - bool serializeAfter; + /** Sets the serialization part of this instruction as handled. */ + void setSerializeHandled() { status.set(SerializeHandled); } /** Checks if the serialization part of this instruction has been * handled. This does not apply to the temporary serializing * state; it only applies to this instruction's own permanent * serializing state. */ - bool isSerializeHandled() { return serializeHandled; } - - /** Sets the serialization part of this instruction as handled. */ - void setSerializeHandled() { serializeHandled = true; } - - /** Whether or not the serialization of this instruction has been handled. */ - bool serializeHandled; + bool isSerializeHandled() { return status[SerializeHandled]; } /** Returns the opclass of this instruction. */ OpClass opClass() const { return staticInst->opClass(); } @@ -465,106 +429,112 @@ class BaseDynInst : public FastAlloc, public RefCounted } /** Sets this instruction as completed. */ - void setCompleted() { completed = true; } + void setCompleted() { status.set(Completed); } /** Returns whether or not this instruction is completed. */ - bool isCompleted() const { return completed; } + bool isCompleted() const { return status[Completed]; } - void setResultReady() { resultReady = true; } + /** Marks the result as ready. */ + void setResultReady() { status.set(ResultReady); } - bool isResultReady() const { return resultReady; } + /** Returns whether or not the result is ready. */ + bool isResultReady() const { return status[ResultReady]; } /** Sets this instruction as ready to issue. */ - void setCanIssue() { canIssue = true; } + void setCanIssue() { status.set(CanIssue); } /** Returns whether or not this instruction is ready to issue. */ - bool readyToIssue() const { return canIssue; } + bool readyToIssue() const { return status[CanIssue]; } /** Sets this instruction as issued from the IQ. */ - void setIssued() { issued = true; } + void setIssued() { status.set(Issued); } /** Returns whether or not this instruction has issued. */ - bool isIssued() const { return issued; } + bool isIssued() const { return status[Issued]; } /** Sets this instruction as executed. */ - void setExecuted() { executed = true; } + void setExecuted() { status.set(Executed); } /** Returns whether or not this instruction has executed. */ - bool isExecuted() const { return executed; } + bool isExecuted() const { return status[Executed]; } /** Sets this instruction as ready to commit. */ - void setCanCommit() { canCommit = true; } + void setCanCommit() { status.set(CanCommit); } /** Clears this instruction as being ready to commit. */ - void clearCanCommit() { canCommit = false; } + void clearCanCommit() { status.reset(CanCommit); } /** Returns whether or not this instruction is ready to commit. */ - bool readyToCommit() const { return canCommit; } + bool readyToCommit() const { return status[CanCommit]; } + + void setAtCommit() { status.set(AtCommit); } + + bool isAtCommit() { return status[AtCommit]; } /** Sets this instruction as committed. */ - void setCommitted() { committed = true; } + void setCommitted() { status.set(Committed); } /** Returns whether or not this instruction is committed. */ - bool isCommitted() const { return committed; } + bool isCommitted() const { return status[Committed]; } /** Sets this instruction as squashed. */ - void setSquashed() { squashed = true; } + void setSquashed() { status.set(Squashed); } /** Returns whether or not this instruction is squashed. */ - bool isSquashed() const { return squashed; } + bool isSquashed() const { return status[Squashed]; } //Instruction Queue Entry //----------------------- /** Sets this instruction as a entry the IQ. */ - void setInIQ() { iqEntry = true; } + void setInIQ() { status.set(IqEntry); } /** Sets this instruction as a entry the IQ. */ - void removeInIQ() { iqEntry = false; } + void clearInIQ() { status.reset(IqEntry); } + + /** Returns whether or not this instruction has issued. */ + bool isInIQ() const { return status[IqEntry]; } /** Sets this instruction as squashed in the IQ. */ - void setSquashedInIQ() { squashedInIQ = true; squashed = true;} + void setSquashedInIQ() { status.set(SquashedInIQ); status.set(Squashed);} /** Returns whether or not this instruction is squashed in the IQ. */ - bool isSquashedInIQ() const { return squashedInIQ; } - - /** Returns whether or not this instruction has issued. */ - bool isInIQ() const { return iqEntry; } + bool isSquashedInIQ() const { return status[SquashedInIQ]; } //Load / Store Queue Functions //----------------------- /** Sets this instruction as a entry the LSQ. */ - void setInLSQ() { lsqEntry = true; } + void setInLSQ() { status.set(LsqEntry); } /** Sets this instruction as a entry the LSQ. */ - void removeInLSQ() { lsqEntry = false; } + void removeInLSQ() { status.reset(LsqEntry); } + + /** Returns whether or not this instruction is in the LSQ. */ + bool isInLSQ() const { return status[LsqEntry]; } /** Sets this instruction as squashed in the LSQ. */ - void setSquashedInLSQ() { squashedInLSQ = true;} + void setSquashedInLSQ() { status.set(SquashedInLSQ);} /** Returns whether or not this instruction is squashed in the LSQ. */ - bool isSquashedInLSQ() const { return squashedInLSQ; } - - /** Returns whether or not this instruction is in the LSQ. */ - bool isInLSQ() const { return lsqEntry; } + bool isSquashedInLSQ() const { return status[SquashedInLSQ]; } //Reorder Buffer Functions //----------------------- /** Sets this instruction as a entry the ROB. */ - void setInROB() { robEntry = true; } + void setInROB() { status.set(RobEntry); } /** Sets this instruction as a entry the ROB. */ - void removeInROB() { robEntry = false; } + void clearInROB() { status.reset(RobEntry); } + + /** Returns whether or not this instruction is in the ROB. */ + bool isInROB() const { return status[RobEntry]; } /** Sets this instruction as squashed in the ROB. */ - void setSquashedInROB() { squashedInROB = true; } + void setSquashedInROB() { status.set(SquashedInROB); } /** Returns whether or not this instruction is squashed in the ROB. */ - bool isSquashedInROB() const { return squashedInROB; } - - /** Returns whether or not this instruction is in the ROB. */ - bool isInROB() const { return robEntry; } + bool isSquashedInROB() const { return status[SquashedInROB]; } /** Read the PC of this instruction. */ const Addr readPC() const { return PC; } @@ -581,10 +551,10 @@ class BaseDynInst : public FastAlloc, public RefCounted /** Sets the thread id. */ void setTid(unsigned tid) { threadNumber = tid; } + /** Sets the pointer to the thread state. */ void setThreadState(ImplState *state) { thread = state; } - /** Returns the thread context. - */ + /** Returns the thread context. */ ThreadContext *tcBase() { return thread->getTC(); } private: @@ -621,8 +591,6 @@ class BaseDynInst : public FastAlloc, public RefCounted /** Store queue index. */ int16_t sqIdx; - bool reachedCommit; - /** Iterator pointing to this BaseDynInst in the list of all insts. */ ListIt instListIt; |