Class for integer arithmetic operations. More...

#include <integer.hh>

Inheritance diagram for gem5::PowerISA::IntArithOp:

Protected Member Functions
	IntArithOp (const char *mnem, MachInst _machInst, OpClass __opClass)
	Constructor.
std::tuple< uint64_t, uint64_t >	add (uint64_t ralo, uint64_t rahi, uint64_t rb) const
std::tuple< uint64_t, int64_t >	add (uint64_t ralo, int64_t rahi, int64_t rb) const
std::tuple< uint64_t, uint64_t >	multiply (uint64_t ra, uint64_t rb) const
	Compute 128-bit product of 64-bit unsigned integer multiplication based on https://stackoverflow.com/a/28904636.
std::tuple< uint64_t, int64_t >	multiply (int64_t ra, int64_t rb) const
std::tuple< uint64_t, uint64_t >	multiplyAdd (uint64_t ra, uint64_t rb, uint64_t rc) const
	Compute 128-bit result of 64-bit unsigned integer multiplication followed by addition.
std::tuple< uint64_t, int64_t >	multiplyAdd (int64_t ra, int64_t rb, int64_t rc) const
	Compute 128-bit result of 64-bit signed integer multiplication followed by addition.
std::tuple< bool, uint64_t, uint64_t >	divide (uint64_t ralo, uint64_t rahi, uint64_t rb) const
	Compute overflow, 64-bit quotient and 64-bit remainder of 128-bit by 64-bit unsigned integer division based on https://codereview.stackexchange.com/a/71013.
std::tuple< bool, int64_t, int64_t >	divide (uint64_t ralo, int64_t rahi, int64_t rb) const
	Compute overflow, 64-bit quotient and 64-bit remainder of 128-bit by 64-bit signed integer division.
std::string	generateDisassembly (Addr pc, const loader::SymbolTable *symtab) const override
	Internal function to generate disassembly string.
Protected Member Functions inherited from gem5::PowerISA::IntOp
	IntOp (const char *mnem, MachInst _machInst, OpClass __opClass)
	Constructor.
uint32_t	makeCRFieldSigned (int64_t a, int64_t b, bool so) const
uint32_t	makeCRFieldUnsigned (uint64_t a, uint64_t b, bool so) const
std::string	generateDisassembly (Addr pc, const loader::SymbolTable *symtab) const override
	Internal function to generate disassembly string.
Protected Member Functions inherited from gem5::PowerISA::PowerStaticInst
	PowerStaticInst (const char *mnem, ExtMachInst _machInst, OpClass __opClass)
uint32_t	insertCRField (uint32_t cr, uint32_t bf, uint32_t value) const
void	printReg (std::ostream &os, RegId reg) const
	Print a register name for disassembly given the unique dependence tag number (FP or int).
std::string	generateDisassembly (Addr pc, const loader::SymbolTable *symtab) const override
	Internal function to generate disassembly string.
void	advancePC (PCStateBase &pc_state) const override
void	advancePC (ThreadContext *tc) const override
std::unique_ptr< PCStateBase >	buildRetPC (const PCStateBase &cur_pc, const PCStateBase &call_pc) const override
size_t	asBytes (void *buf, size_t max_size) override
	Instruction classes can override this function to return a a representation of themselves as a blob of bytes, generally assumed to be that instructions ExtMachInst.
void	setRegIdxArrays (RegIdArrayPtr src, RegIdArrayPtr dest)
	Set the pointers which point to the arrays of source and destination register indices.
	StaticInst (const char *_mnemonic, OpClass op_class)
	Constructor.
template<typename T>
size_t	simpleAsBytes (void *buf, size_t max_size, const T &t)

Additional Inherited Members
Public Types inherited from gem5::StaticInst
using	RegIdArrayPtr = RegId (StaticInst:: *)[]
Public Member Functions inherited from gem5::StaticInst
uint8_t	numSrcRegs () const
	Number of source registers.
uint8_t	numDestRegs () const
	Number of destination registers.
uint8_t	numDestRegs (RegClassType type) const
	Number of destination registers of a particular type.
bool	isNop () const
bool	isMemRef () const
bool	isLoad () const
bool	isStore () const
bool	isAtomic () const
bool	isStoreConditional () const
bool	isInstPrefetch () const
bool	isDataPrefetch () const
bool	isPrefetch () const
bool	isInteger () const
bool	isFloating () const
bool	isVector () const
bool	isMatrix () const
bool	isControl () const
bool	isCall () const
bool	isReturn () const
bool	isDirectCtrl () const
bool	isIndirectCtrl () const
bool	isCondCtrl () const
bool	isUncondCtrl () const
bool	isSerializing () const
bool	isSerializeBefore () const
bool	isSerializeAfter () const
bool	isSquashAfter () const
bool	isFullMemBarrier () const
bool	isReadBarrier () const
bool	isWriteBarrier () const
bool	isNonSpeculative () const
bool	isQuiesce () const
bool	isUnverifiable () const
bool	isPseudo () const
bool	isSyscall () const
bool	isMacroop () const
bool	isMicroop () const
bool	isDelayedCommit () const
bool	isLastMicroop () const
bool	isFirstMicroop () const
bool	isHtmStart () const
bool	isHtmStop () const
bool	isHtmCancel () const
bool	isInvalid () const
bool	isHtmCmd () const
void	setFirstMicroop ()
void	setLastMicroop ()
void	setDelayedCommit ()
void	setFlag (Flags f)
OpClass	opClass () const
	Operation class. Used to select appropriate function unit in issue.
const RegId &	destRegIdx (int i) const
	Return logical index (architectural reg num) of i'th destination reg.
void	setDestRegIdx (int i, const RegId &val)
const RegId &	srcRegIdx (int i) const
	Return logical index (architectural reg num) of i'th source reg.
void	setSrcRegIdx (int i, const RegId &val)
virtual uint64_t	getEMI () const
virtual	~StaticInst ()
virtual Fault	execute (ExecContext xc, trace::InstRecord traceData) const =0
virtual Fault	initiateAcc (ExecContext xc, trace::InstRecord traceData) const
virtual Fault	completeAcc (Packet pkt, ExecContext xc, trace::InstRecord *trace_data) const
size_t	size () const
virtual void	size (size_t newSize)
virtual StaticInstPtr	fetchMicroop (MicroPC upc) const
	Return the microop that goes with a particular micropc.
virtual std::unique_ptr< PCStateBase >	branchTarget (const PCStateBase &pc) const
	Return the target address for a PC-relative branch.
virtual std::unique_ptr< PCStateBase >	branchTarget (ThreadContext *tc) const
	Return the target address for an indirect branch (jump).
virtual const std::string &	disassemble (Addr pc, const loader::SymbolTable *symtab=nullptr) const
	Return string representation of disassembled instruction.
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.
std::string	getName ()
	Return name of machine instruction.
Public Member Functions inherited from gem5::RefCounted
	RefCounted ()
	We initialize the reference count to zero and the first object to take ownership of it must increment it to one.
virtual	~RefCounted ()
	We make the destructor virtual because we're likely to have virtual functions on reference counted objects.
void	incref () const
	Increment the reference count.
void	decref () const
	Decrement the reference count and destroy the object if all references are gone.
static StaticInstPtr	nullStaticInstPtr
	Pointer to a statically allocated "null" instruction object.
Protected Attributes inherited from gem5::PowerISA::IntOp
bool	rc
bool	oe
uint32_t	sh
Protected Attributes inherited from gem5::PowerISA::PowerStaticInst
ExtMachInst	machInst
Protected Attributes inherited from gem5::StaticInst
std::bitset< Num_Flags >	flags
	Flag values for this instruction.
OpClass	_opClass
	See opClass().
uint8_t	_numSrcRegs = 0
	See numSrcRegs().
uint8_t	_numDestRegs = 0
	See numDestRegs().
std::array< uint8_t, MiscRegClass+1 >	_numTypedDestRegs = {}
size_t	_size = 0
	Instruction size in bytes.
const char *	mnemonic
	Base mnemonic (e.g., "add").
std::unique_ptr< std::string >	cachedDisassembly
	String representation of disassembly (lazily evaluated via disassemble()).

Detailed Description

Class for integer arithmetic operations.

Definition at line 131 of file integer.hh.

Constructor & Destructor Documentation

◆ IntArithOp()

gem5::PowerISA::IntArithOp::IntArithOp	(	const char *	mnem,
		MachInst	_machInst,
		OpClass	__opClass )

inlineprotected

Constructor.

Definition at line 136 of file integer.hh.

References gem5::PowerISA::IntOp::IntOp().

Referenced by gem5::PowerISA::IntDispArithOp::IntDispArithOp(), and gem5::PowerISA::IntImmArithOp::IntImmArithOp().

Member Function Documentation

◆ add() [1/2]

std::tuple< uint64_t, int64_t > gem5::PowerISA::IntArithOp::add	(	uint64_t	ralo,
		int64_t	rahi,
		int64_t	rb ) const

inlineprotected

Definition at line 160 of file integer.hh.

References gem5::PowerISA::ra, and gem5::RiscvISA::sum.

◆ add() [2/2]

std::tuple< uint64_t, uint64_t > gem5::PowerISA::IntArithOp::add	(	uint64_t	ralo,
		uint64_t	rahi,
		uint64_t	rb ) const

inlineprotected

Definition at line 143 of file integer.hh.

References gem5::PowerISA::ra, and gem5::RiscvISA::sum.

Referenced by multiplyAdd(), and multiplyAdd().

◆ divide() [1/2]

std::tuple< bool, int64_t, int64_t > gem5::PowerISA::IntArithOp::divide	(	uint64_t	ralo,
		int64_t	rahi,
		int64_t	rb ) const

inlineprotected

Compute overflow, 64-bit quotient and 64-bit remainder of 128-bit by 64-bit signed integer division.

Definition at line 328 of file integer.hh.

References gem5::ArmISA::divide, gem5::PowerISA::ov, gem5::ArmISA::q, gem5::MipsISA::r, and gem5::PowerISA::ra.

◆ divide() [2/2]

std::tuple< bool, uint64_t, uint64_t > gem5::PowerISA::IntArithOp::divide	(	uint64_t	ralo,
		uint64_t	rahi,
		uint64_t	rb ) const

inlineprotected

Compute overflow, 64-bit quotient and 64-bit remainder of 128-bit by 64-bit unsigned integer division based on https://codereview.stackexchange.com/a/71013.

Definition at line 278 of file integer.hh.

References gem5::ArmISA::c, gem5::ArmISA::i, gem5::PowerISA::ov, gem5::ArmISA::q, gem5::MipsISA::r, and gem5::PowerISA::ra.

◆ generateDisassembly()

std::string gem5::IntArithOp::generateDisassembly	(	Addr	pc,
		const loader::SymbolTable *	symtab ) const

overrideprotectedvirtual

Internal function to generate disassembly string.

Implements gem5::StaticInst.

Reimplemented in gem5::PowerISA::IntDispArithOp, and gem5::PowerISA::IntImmArithOp.

Definition at line 119 of file integer.cc.

References gem5::StaticInst::_numDestRegs, gem5::StaticInst::_numSrcRegs, gem5::ccprintf(), gem5::StaticInst::destRegIdx(), gem5::StaticInst::mnemonic, gem5::PowerISA::IntOp::oe, gem5::MipsISA::pc, gem5::PowerISA::PowerStaticInst::printReg(), gem5::PowerISA::IntOp::rc, gem5::StaticInst::srcRegIdx(), and gem5::ArmISA::ss.

◆ multiply() [1/2]

std::tuple< uint64_t, int64_t > gem5::PowerISA::IntArithOp::multiply	(	int64_t	ra,
		int64_t	rb ) const

inlineprotected

Definition at line 215 of file integer.hh.

References multiply(), and gem5::PowerISA::ra.

◆ multiply() [2/2]

std::tuple< uint64_t, uint64_t > gem5::PowerISA::IntArithOp::multiply	(	uint64_t	ra,
		uint64_t	rb ) const

inlineprotected

Compute 128-bit product of 64-bit unsigned integer multiplication based on https://stackoverflow.com/a/28904636.

Definition at line 192 of file integer.hh.

References gem5::ArmISA::c, and gem5::PowerISA::ra.

Referenced by multiply(), multiplyAdd(), and multiplyAdd().

◆ multiplyAdd() [1/2]

std::tuple< uint64_t, int64_t > gem5::PowerISA::IntArithOp::multiplyAdd	(	int64_t	ra,
		int64_t	rb,
		int64_t	rc ) const

inlineprotected

Compute 128-bit result of 64-bit signed integer multiplication followed by addition.

Definition at line 255 of file integer.hh.

References add(), multiply(), gem5::PowerISA::ra, and gem5::PowerISA::IntOp::rc.

◆ multiplyAdd() [2/2]

std::tuple< uint64_t, uint64_t > gem5::PowerISA::IntArithOp::multiplyAdd	(	uint64_t	ra,
		uint64_t	rb,
		uint64_t	rc ) const

inlineprotected

Compute 128-bit result of 64-bit unsigned integer multiplication followed by addition.

Definition at line 235 of file integer.hh.

References add(), multiply(), gem5::PowerISA::ra, and gem5::PowerISA::IntOp::rc.

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

arch/power/insts/integer.hh
arch/power/insts/integer.cc

Protected Member Functions

Additional Inherited Members

Detailed Description

Constructor & Destructor Documentation

◆ IntArithOp()

Member Function Documentation

◆ add() [1/2]

◆ add() [2/2]

◆ divide() [1/2]

◆ divide() [2/2]

◆ generateDisassembly()

◆ multiply() [1/2]

◆ multiply() [2/2]

◆ multiplyAdd() [1/2]

◆ multiplyAdd() [2/2]