Certain mrc/mcr instructions act as nops or flush the pipe based on what register the instruction is trying to access. More...

#include <pseudo.hh>

Inheritance diagram for McrMrcMiscInst:

Public Member Functions
	McrMrcMiscInst (const char *_mnemonic, ExtMachInst _machInst, uint64_t _iss, MiscRegIndex _miscReg)

Fault	execute (ExecContext xc, Trace::InstRecord traceData) const

std::string	generateDisassembly (Addr pc, const SymbolTable *symtab) const
	Internal function to generate disassembly string. More...

Public Member Functions inherited from ArmISA::ArmStaticInst
virtual void	annotateFault (ArmFault *fault)

Public Member Functions inherited from StaticInst
int8_t	numCCDestRegs () const
	Number of coprocesor destination regs. More...

void	setFirstMicroop ()

void	setLastMicroop ()

void	setDelayedCommit ()

void	setFlag (Flags f)

OpClass	opClass () const
	Operation class. Used to select appropriate function unit in issue. More...

RegIndex	destRegIdx (int i) const
	Return logical index (architectural reg num) of i'th destination reg. More...

RegIndex	srcRegIdx (int i) const
	Return logical index (architectural reg num) of i'th source reg. More...

virtual const StaticInstPtr &	eaCompInst () const
	Memory references only: returns "fake" instruction representing the effective address part of the memory operation. More...

virtual const StaticInstPtr &	memAccInst () const
	Memory references only: returns "fake" instruction representing the memory access part of the memory operation. More...

virtual	~StaticInst ()

virtual Fault	eaComp (ExecContext xc, Trace::InstRecord traceData) const

virtual Fault	initiateAcc (ExecContext xc, Trace::InstRecord traceData) const

virtual Fault	completeAcc (Packet pkt, ExecContext xc, Trace::InstRecord *traceData) const

virtual void	advancePC (TheISA::PCState &pcState) const =0

virtual StaticInstPtr	fetchMicroop (MicroPC upc) const
	Return the microop that goes with a particular micropc. More...

virtual TheISA::PCState	branchTarget (const TheISA::PCState &pc) const
	Return the target address for a PC-relative branch. More...

virtual TheISA::PCState	branchTarget (ThreadContext *tc) const
	Return the target address for an indirect branch (jump). More...

bool	hasBranchTarget (const TheISA::PCState &pc, ThreadContext *tc, TheISA::PCState &tgt) const
	Return true if the instruction is a control transfer, and if so, return the target address as well. More...

virtual const std::string &	disassemble (Addr pc, const SymbolTable *symtab=0) const
	Return string representation of disassembled instruction. More...

void	printFlags (std::ostream &outs, const std::string &separator) const
	Print a separator separated list of this instruction's set flag names on the given stream. More...

std::string	getName ()
	Return name of machine instruction. More...

int8_t	numSrcRegs () const
	Number of source registers. More...

int8_t	numDestRegs () const
	Number of destination registers. More...

int8_t	numFPDestRegs () const
	Number of floating-point destination regs. More...

int8_t	numIntDestRegs () const
	Number of integer destination regs. More...

bool	isNop () const

bool	isMemRef () const

bool	isLoad () const

bool	isStore () const

bool	isStoreConditional () const

bool	isInstPrefetch () const

bool	isDataPrefetch () const

bool	isPrefetch () const

bool	isInteger () const

bool	isFloating () const

bool	isCC () const

bool	isControl () const

bool	isCall () const

bool	isReturn () const

bool	isDirectCtrl () const

bool	isIndirectCtrl () const

bool	isCondCtrl () const

bool	isUncondCtrl () const

bool	isCondDelaySlot () const

bool	isThreadSync () const

bool	isSerializing () const

bool	isSerializeBefore () const

bool	isSerializeAfter () const

bool	isSquashAfter () const

bool	isMemBarrier () const

bool	isWriteBarrier () const

bool	isNonSpeculative () const

bool	isQuiesce () const

bool	isIprAccess () const

bool	isUnverifiable () const

bool	isSyscall () const

bool	isMacroop () const

bool	isMicroop () const

bool	isDelayedCommit () const

bool	isLastMicroop () const

bool	isFirstMicroop () const

bool	isMicroBranch () const

Public Member Functions inherited from RefCounted
	RefCounted ()
	We initialize the reference count to zero and the first object to take ownership of it must increment it to one. More...

virtual	~RefCounted ()
	We make the destructor virtual because we're likely to have virtual functions on reference counted objects. More...

void	incref ()
	Increment the reference count. More...

void	decref ()
	Decrement the reference count and destroy the object if all references are gone. More...

Private Attributes
uint64_t	iss

MiscRegIndex	miscReg

Additional Inherited Members
Public Types inherited from StaticInst
enum	{ MaxInstSrcRegs = TheISA::MaxInstSrcRegs, MaxInstDestRegs = TheISA::MaxInstDestRegs }

typedef TheISA::ExtMachInst	ExtMachInst
	Binary extended machine instruction type. More...

typedef TheISA::RegIndex	RegIndex
	Logical register index type. More...

Public Attributes inherited from StaticInst
const ExtMachInst	machInst
	The binary machine instruction. More...

Static Public Attributes inherited from StaticInst
static StaticInstPtr	nullStaticInstPtr
	Pointer to a statically allocated "null" instruction object. More...

Protected Member Functions inherited from ArmISA::ArmStaticInst
int32_t	shift_rm_imm (uint32_t base, uint32_t shamt, uint32_t type, uint32_t cfval) const

int32_t	shift_rm_rs (uint32_t base, uint32_t shamt, uint32_t type, uint32_t cfval) const

bool	shift_carry_imm (uint32_t base, uint32_t shamt, uint32_t type, uint32_t cfval) const

bool	shift_carry_rs (uint32_t base, uint32_t shamt, uint32_t type, uint32_t cfval) const

int64_t	shiftReg64 (uint64_t base, uint64_t shiftAmt, ArmShiftType type, uint8_t width) const

int64_t	extendReg64 (uint64_t base, ArmExtendType type, uint64_t shiftAmt, uint8_t width) const

	ArmStaticInst (const char *mnem, ExtMachInst _machInst, OpClass __opClass)

void	printReg (std::ostream &os, int reg) const
	Print a register name for disassembly given the unique dependence tag number (FP or int). More...

void	printMnemonic (std::ostream &os, const std::string &suffix="", bool withPred=true, bool withCond64=false, ConditionCode cond64=COND_UC) const

void	printTarget (std::ostream &os, Addr target, const SymbolTable *symtab) const

void	printCondition (std::ostream &os, unsigned code, bool noImplicit=false) const

void	printMemSymbol (std::ostream &os, const SymbolTable *symtab, const std::string &prefix, const Addr addr, const std::string &suffix) const

void	printShiftOperand (std::ostream &os, IntRegIndex rm, bool immShift, uint32_t shiftAmt, IntRegIndex rs, ArmShiftType type) const

void	printExtendOperand (bool firstOperand, std::ostream &os, IntRegIndex rm, ArmExtendType type, int64_t shiftAmt) const

void	printDataInst (std::ostream &os, bool withImm) const

void	printDataInst (std::ostream &os, bool withImm, bool immShift, bool s, IntRegIndex rd, IntRegIndex rn, IntRegIndex rm, IntRegIndex rs, uint32_t shiftAmt, ArmShiftType type, uint64_t imm) const

void	advancePC (PCState &pcState) const

std::string	generateDisassembly (Addr pc, const SymbolTable *symtab) const
	Internal function to generate disassembly string. More...

Fault	disabledFault () const

Fault	advSIMDFPAccessTrap64 (ExceptionLevel el) const
	Trap an access to Advanced SIMD or FP registers due to access control bits. More...

Fault	checkFPAdvSIMDTrap64 (ThreadContext *tc, CPSR cpsr) const
	Check an Advaned SIMD access against CPTR_EL2 and CPTR_EL3. More...

Fault	checkFPAdvSIMDEnabled64 (ThreadContext *tc, CPSR cpsr, CPACR cpacr) const
	Check an Advaned SIMD access against CPACR_EL1, CPTR_EL2, and CPTR_EL3. More...

Fault	checkAdvSIMDOrFPEnabled32 (ThreadContext *tc, CPSR cpsr, CPACR cpacr, NSACR nsacr, FPEXC fpexc, bool fpexc_check, bool advsimd) const
	Check if a VFP/SIMD access from aarch32 should be allowed. More...

CPSR	getPSTATEFromPSR (ThreadContext *tc, CPSR cpsr, CPSR spsr) const
	Get the new PSTATE from a SPSR register in preparation for an exception return. More...

Protected Member Functions inherited from StaticInst
	StaticInst (const char *_mnemonic, ExtMachInst _machInst, OpClass __opClass)
	Constructor. More...

Static Protected Member Functions inherited from ArmISA::ArmStaticInst
template<int width>
static bool	saturateOp (int32_t &res, int64_t op1, int64_t op2, bool sub=false)

static bool	satInt (int32_t &res, int64_t op, int width)

template<int width>
static bool	uSaturateOp (uint32_t &res, int64_t op1, int64_t op2, bool sub=false)

static bool	uSatInt (int32_t &res, int64_t op, int width)

static uint32_t	cpsrWriteByInstr (CPSR cpsr, uint32_t val, SCR scr, NSACR nsacr, uint8_t byteMask, bool affectState, bool nmfi, ThreadContext *tc)

static uint32_t	spsrWriteByInstr (uint32_t spsr, uint32_t val, uint8_t byteMask, bool affectState)

template<class XC >
static Addr	readPC (XC *xc)

template<class XC >
static void	setNextPC (XC *xc, Addr val)

template<class T >
static T	cSwap (T val, bool big)

template<class T , class E >
static T	cSwap (T val, bool big)

template<class XC >
static void	setIWNextPC (XC *xc, Addr val)

template<class XC >
static void	setAIWNextPC (XC *xc, Addr val)

Protected Attributes inherited from ArmISA::ArmStaticInst
bool	aarch64

uint8_t	intWidth

Protected Attributes inherited from StaticInst
std::bitset< Num_Flags >	flags
	Flag values for this instruction. More...

OpClass	_opClass
	See opClass(). More...

int8_t	_numSrcRegs
	See numSrcRegs(). More...

int8_t	_numDestRegs
	See numDestRegs(). More...

RegIndex	_destRegIdx [MaxInstDestRegs]
	See destRegIdx(). More...

RegIndex	_srcRegIdx [MaxInstSrcRegs]
	See srcRegIdx(). More...

const char *	mnemonic
	Base mnemonic (e.g., "add"). More...

std::string *	cachedDisassembly
	String representation of disassembly (lazily evaluated via disassemble()). More...

int8_t	_numFPDestRegs
	The following are used to track physical register usage for machines with separate int & FP reg files. More...

int8_t	_numIntDestRegs

int8_t	_numCCDestRegs

Detailed Description

Certain mrc/mcr instructions act as nops or flush the pipe based on what register the instruction is trying to access.

This inst/class exists so that we can still check for hyp traps, as the normal nop instruction does not.

Definition at line 124 of file pseudo.hh.

Constructor & Destructor Documentation

McrMrcMiscInst::McrMrcMiscInst	(	const char *	_mnemonic,
		ExtMachInst	_machInst,
		uint64_t	_iss,
		MiscRegIndex	_miscReg
	)

Definition at line 186 of file pseudo.cc.

References StaticInst::flags, iss, and miscReg.

Member Function Documentation

Fault McrMrcMiscInst::execute	(	ExecContext *	xc,
		Trace::InstRecord *	traceData
	)		const

virtual

Implements StaticInst.

Definition at line 196 of file pseudo.cc.

References ArmISA::EC_TRAPPED_CP15_MCR_MRC, iss, StaticInst::machInst, ArmISA::mcrMrc15TrapToHyp(), miscReg, ArmISA::MISCREG_CPSR, ArmISA::MISCREG_DCCMVAC, ArmISA::MISCREG_HCPTR, ArmISA::MISCREG_HCR, ArmISA::MISCREG_HDCR, ArmISA::MISCREG_HSTR, ArmISA::MISCREG_SCR, NoFault, and ExecContext::readMiscReg().

std::string McrMrcMiscInst::generateDisassembly	(	Addr	pc,
		const SymbolTable *	symtab
	)		const

virtual

Internal function to generate disassembly string.

Implements StaticInst.

Definition at line 219 of file pseudo.cc.

References csprintf(), and StaticInst::mnemonic.

Member Data Documentation

uint64_t McrMrcMiscInst::iss

private

Definition at line 127 of file pseudo.hh.

Referenced by execute(), and McrMrcMiscInst().

MiscRegIndex McrMrcMiscInst::miscReg

private

Definition at line 128 of file pseudo.hh.

Referenced by execute(), and McrMrcMiscInst().

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

arch/arm/insts/pseudo.hh
arch/arm/insts/pseudo.cc

Public Member Functions

Private Attributes

Additional Inherited Members

Detailed Description

Constructor & Destructor Documentation

Member Function Documentation

Member Data Documentation