Description

Architecture-specific information for the Java virtual machine.

A Java virtual machine (JVM) is a virtual machine that enables a computer to run Java programs as well as programs written in other languages that are also compiled to Java bytecode. The JVM is detailed by a specification that formally describes what is required in a JVM implementation. Having a specification ensures interoperability of Java programs across different implementations so that program authors using the Java Development Kit (JDK) need not worry about idiosyncrasies of the underlying hardware platform.

The JVM reference implementation is developed by the OpenJDK project as open source code and includes a JIT compiler called HotSpot. The commercially supported Java releases available from Oracle are based on the OpenJDK runtime. Eclipse OpenJ9 is another open source JVM for OpenJDK.

Definition at line 22 of file Rose/BinaryAnalysis/Architecture/Jvm.h.

#include <Rose/BinaryAnalysis/Architecture/Jvm.h>

Inheritance diagram for Rose::BinaryAnalysis::Architecture::Jvm:

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Collaboration diagram for Rose::BinaryAnalysis::Architecture::Jvm:

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Public Types
using	Ptr = JvmPtr

Public Types inherited from Rose::BinaryAnalysis::Architecture::Base
using	Ptr = BasePtr
	Reference counting pointer.

using	ConstPtr = BaseConstPtr
	Reference counting pointer to const object.

Public Member Functions
RegisterDictionary::Ptr	registerDictionary () const override
	Property: Register dictionary.

bool	matchesHeader (SgAsmGenericHeader *) const override
	Tests whether this architecture matches a file header.

Sawyer::Container::Interval< size_t >	bytesPerInstruction () const override
	Valid sizes for encoded machine instructions.

Alignment	instructionAlignment () const override
	Alignment for encoded machine instructions.

std::string	instructionMnemonic (const SgAsmInstruction *) const override
	Mnemonic for an instruction.

std::string	instructionDescription (const SgAsmInstruction *) const override
	Description for an instruction.

bool	isUnknown (const SgAsmInstruction *) const override
	Returns true if the instruction is the special "unknown" instruction.

bool	terminatesBasicBlock (SgAsmInstruction *) const override
	Determines whether the specified instruction normally terminates a basic block.

bool	isFunctionCallFast (const std::vector< SgAsmInstruction * > &, rose_addr_t target, rose_addr_t ret) const override
	Returns true if the specified basic block looks like a function call.

bool	isFunctionReturnFast (const std::vector< SgAsmInstruction * > &) const override
	Returns true if the specified basic block looks like a function return.

Sawyer::Optional< rose_addr_t >	branchTarget (SgAsmInstruction *) const override
	Obtains the virtual address for a branching instruction.

AddressSet	getSuccessors (SgAsmInstruction *, bool &complete) const override
	Control flow successors for a single instruction.

Disassembler::BasePtr	newInstructionDecoder () const override
	Construct and return a new instruction decoder.

Unparser::BasePtr	newUnparser () const override
	Construct and return a new instruction unparser.

Public Member Functions inherited from Rose::BinaryAnalysis::Architecture::Base
const std::string &	name () const
	Property: Architecture definition name.

ByteOrder::Endianness	byteOrder () const
	Property: Byte order for memory.

virtual RegisterDictionaryPtr	interruptDictionary () const
	Property: Interrupt dictionary.

virtual const CallingConvention::Dictionary &	callingConventions () const
	Property: Calling convention definitions.

virtual bool	matchesName (const std::string &) const
	Tests whether this architecture matches a name.

virtual InstructionSemantics::BaseSemantics::DispatcherPtr	newInstructionDispatcher (const InstructionSemantics::BaseSemantics::RiscOperatorsPtr &) const
	Construct and return a new instruction dispatcher.

bool	instructionsCanOverlap () const
	Whether instructions can overlap in memory.

virtual std::string	toString (const SgAsmExpression *) const
	Unparse an expression to a string.

virtual bool	isControlTransfer (const SgAsmInstruction *) const
	Returns true if the specified instruction is a control transfer instruction.

virtual std::vector< Partitioner2::FunctionPrologueMatcherPtr >	functionPrologueMatchers (const Partitioner2::EnginePtr &) const
	Instruction patterns matching function prologues.

virtual std::vector< Partitioner2::BasicBlockCallbackPtr >	basicBlockCreationHooks (const Partitioner2::EnginePtr &) const
	Architecture-specific basic block callbacks for partitioning.

const Sawyer::Optional< size_t > &	registrationId () const
	Property: Registration identification number.

void	registrationId (const Sawyer::Optional< size_t > &)
	Property: Registration identification number.

size_t	bytesPerWord () const
	Property: Word size.

size_t	bitsPerWord () const
	Property: Word size.

virtual Unparser::BasePtr	newInstructionUnparser () const
	Construct and return a new instruction unparser.

virtual std::string	toString (const SgAsmInstruction *) const
	Unparse an instruction to a string.

virtual std::string	toStringNoAddr (const SgAsmInstruction *) const
	Unparse an instruction to a string.

virtual bool	isFunctionCallSlow (const std::vector< SgAsmInstruction * > &, rose_addr_t target, rose_addr_t ret) const
	Returns true if the specified basic block looks like a function call.

virtual bool	isFunctionReturnSlow (const std::vector< SgAsmInstruction * > &) const
	Returns true if the specified basic block looks like a function return.

AddressSet	getSuccessors (const std::vector< SgAsmInstruction * > &basicBlock, bool &complete) const
	Control flow successors for a basic block.

virtual AddressSet	getSuccessors (const std::vector< SgAsmInstruction * > &basicBlock, bool &complete, const MemoryMapPtr &initial_memory) const
	Control flow successors for a basic block.

Static Public Member Functions
static Ptr	instance ()
	Allocating constructor.

Additional Inherited Members
Protected Member Functions inherited from Rose::BinaryAnalysis::Architecture::Base
	Base (const std::string &name, size_t bytesPerWord, ByteOrder::Endianness byteOrder)

Ptr	ptr ()

ConstPtr	constPtr () const

virtual Unparser::BasePtr	insnUnparser () const

Protected Attributes inherited from Rose::BinaryAnalysis::Architecture::Base
Sawyer::Cached< RegisterDictionaryPtr >	registerDictionary_

Sawyer::Cached< RegisterDictionaryPtr >	interruptDictionary_

Sawyer::Cached< CallingConvention::Dictionary >	callingConventions_

Sawyer::Cached< Unparser::Base::Ptr >	insnToString_

Sawyer::Cached< Unparser::Base::Ptr >	insnToStringNoAddr_

Member Typedef Documentation

◆ Ptr

using Rose::BinaryAnalysis::Architecture::Jvm::Ptr = JvmPtr

Definition at line 24 of file Rose/BinaryAnalysis/Architecture/Jvm.h.

Member Function Documentation

◆ registerDictionary()

RegisterDictionary::Ptr Rose::BinaryAnalysis::Architecture::Jvm::registerDictionary ( ) const

overridevirtual

Property: Register dictionary.

The register dictionary defines a mapping between register names and register descriptors (RegisterDescriptor), and thus how the registers map into hardware.

Since dictionaries are generally not modified, it is permissible for this function to return the same dictionary every time it's called. The dictionary can be constructed on the first call.

Thread safety: Thread safe.

Implements Rose::BinaryAnalysis::Architecture::Base.

◆ matchesHeader()

bool Rose::BinaryAnalysis::Architecture::Jvm::matchesHeader ( SgAsmGenericHeader * ) const

overridevirtual

Tests whether this architecture matches a file header.

Returns true if this architecture matches the specified file header, and false otherwise.

The default implementation always returns false.

Reimplemented from Rose::BinaryAnalysis::Architecture::Base.

◆ bytesPerInstruction()

Sawyer::Container::Interval< size_t > Rose::BinaryAnalysis::Architecture::Jvm::bytesPerInstruction ( ) const

overridevirtual

Valid sizes for encoded machine instructions.

Returns the range of valid sizes for encoded machine instructions. For instance, an x86 instruction can be from one to 15 bytes in length, but a PowerPC PPC32 instruction is always exactly 4 bytes.

Implements Rose::BinaryAnalysis::Architecture::Base.

◆ instructionAlignment()

Alignment Rose::BinaryAnalysis::Architecture::Jvm::instructionAlignment ( ) const

overridevirtual

Alignment for encoded machine instructions.

Implements Rose::BinaryAnalysis::Architecture::Base.

◆ instructionMnemonic()

std::string Rose::BinaryAnalysis::Architecture::Jvm::instructionMnemonic ( const SgAsmInstruction * ) const

overridevirtual

Mnemonic for an instruction.

Returns the mnemonic for a particular instruction.

Thread safety: Thread safe.

Implements Rose::BinaryAnalysis::Architecture::Base.

◆ instructionDescription()

std::string Rose::BinaryAnalysis::Architecture::Jvm::instructionDescription ( const SgAsmInstruction * ) const

overridevirtual

Description for an instruction.

Returns the description for a particular instruction. The description must be a single line with no leading or trailing white space, no line termination characters, and no non-printable characters. Most subclasses will just return a string based on the instruction mnemonic, such as "push a value onto the stack" for a PUSH instruction. The instruction argument must not be a null pointer and must be valid for this architecture.

The default implementation returns an empty string.

Thread safety: Thread safe.

Reimplemented from Rose::BinaryAnalysis::Architecture::Base.

◆ isUnknown()

bool Rose::BinaryAnalysis::Architecture::Jvm::isUnknown ( const SgAsmInstruction * ) const

overridevirtual

Returns true if the instruction is the special "unknown" instruction.

Each instruction architecture in ROSE defines an "unknown" instruction to be used when the disassembler is unable to create a real instruction. This can happen, for instance, if the bit pattern does not represent a valid instruction for the architecture. The instruction must not be a null pointer, and must be valid for this architecture.

Thread safety: Thread safe.

Implements Rose::BinaryAnalysis::Architecture::Base.

◆ terminatesBasicBlock()

bool Rose::BinaryAnalysis::Architecture::Jvm::terminatesBasicBlock ( SgAsmInstruction * ) const

overridevirtual

Determines whether the specified instruction normally terminates a basic block.

The analysis generally only looks at the individual instruction and therefore is not very sophisticated. For instance, a conditional branch will always terminate a basic block by this method even if its condition is opaque. The instruction argument must not be a null pointer and must be valid for this architecture.

Thread safety: Thread safe.

Implements Rose::BinaryAnalysis::Architecture::Base.

◆ isFunctionCallFast()

bool Rose::BinaryAnalysis::Architecture::Jvm::isFunctionCallFast	(	const std::vector< SgAsmInstruction * > &	,
		rose_addr_t *	target,
		rose_addr_t *	ret
	)		const

overridevirtual

Returns true if the specified basic block looks like a function call.

If the basic block looks like a function call then this method returns true. If (and only if) the target address is known (i.e., the address of the called function) then target is set to this address (otherwise target is unmodified). If the return address is known or can be guessed, then return_va is initialized to the return address, which is normally the fall-through address of the last instruction; otherwise the return_va is unmodified.

The "fast" and "slow" versions differ only in what kind of anlysis they do. The "fast" version typically looks only at instruction patterns while the slow version might incur more expense by looking at instruction semantics.

The base implementation of the fast method always returns false. The base implementation of the slow method just calls the fast method.

Thread safety: Thread safe.

Reimplemented from Rose::BinaryAnalysis::Architecture::Base.

◆ isFunctionReturnFast()

bool Rose::BinaryAnalysis::Architecture::Jvm::isFunctionReturnFast ( const std::vector< SgAsmInstruction * > & ) const

overridevirtual

Returns true if the specified basic block looks like a function return.

The "fast" and "slow" versions differ only in what kind of anlysis they do. The "fast" version typically looks only at instruction patterns while the slow version might incur more expense by looking at instruction semantics.

The base implementaiton of the fast method always returns false. The base implementation of the slow method just calls the fast method.

Thread safety: Thread safe.

Reimplemented from Rose::BinaryAnalysis::Architecture::Base.

◆ branchTarget()

Sawyer::Optional< rose_addr_t > Rose::BinaryAnalysis::Architecture::Jvm::branchTarget ( SgAsmInstruction * ) const

overridevirtual

Obtains the virtual address for a branching instruction.

Returns the branch target address if the specified instruction is a branching instruction and the target is known; otherwise returns nothing.

The default implementation returns nothing.

Thread safety: Thread safe.

Reimplemented from Rose::BinaryAnalysis::Architecture::Base.

◆ getSuccessors()

AddressSet Rose::BinaryAnalysis::Architecture::Jvm::getSuccessors	(	SgAsmInstruction *	,
		bool &	complete
	)		const

overridevirtual

Control flow successors for a single instruction.

The return value does not consider neighboring instructions, and therefore is quite naive. It returns only the information it can glean from this single instruction. If the returned set of virtual instructions is fully known then the complete argument will be set to true, otherwise false. The instruction must not be null, and must be valid for this architecture.

The default implementation always returns an empty set and clears complete.

Thread safety: Thread saafe.

Reimplemented from Rose::BinaryAnalysis::Architecture::Base.

◆ newInstructionDecoder()

Disassembler::BasePtr Rose::BinaryAnalysis::Architecture::Jvm::newInstructionDecoder ( ) const

overridevirtual

Construct and return a new instruction decoder.

Returns a new decoder for this architecture if possible, otherwise a null pointer.

Thread safety: Thread safe.

Implements Rose::BinaryAnalysis::Architecture::Base.

◆ newUnparser()

Unparser::BasePtr Rose::BinaryAnalysis::Architecture::Jvm::newUnparser ( ) const

overridevirtual

Construct and return a new instruction unparser.

An unparser is responsible for generating pseudo assembly listings.

The newUnparser returns a default configured unparser suitable for unparsing instructions in the context of an assembly listing. The newInstructionUnparser returns a parser configured to show individual instructions showing only the instruction address, the instruction mnemonic, and the operands.

Example: The default instruction unparser uses color by default. If you want to turn off the color, you must create a new unparser, configure it to disable color, and then use it to unparse the instruction.

SgAsmInstruction *insn = ...;
 
// Produce colored output
std::cout <<insn->toString() <<"\n";
 
// Produce monochrome output
auto unparser = notnull(insn->architecture()->newInstructionUnparser());
unparser->settings().colorization.enabled = Color::Enabled::OFF;
std::cout <<unparser->unparse(insn) <<"\n";

Thread safety: Thread safe.

Implements Rose::BinaryAnalysis::Architecture::Base.

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

Rose/BinaryAnalysis/Architecture/Jvm.h

Description

Public Types

Public Member Functions

Static Public Member Functions

Additional Inherited Members

Member Typedef Documentation

◆ Ptr

Member Function Documentation

◆ registerDictionary()

◆ matchesHeader()

◆ bytesPerInstruction()

◆ instructionAlignment()

◆ instructionMnemonic()

◆ instructionDescription()

◆ isUnknown()

◆ terminatesBasicBlock()

◆ isFunctionCallFast()

◆ isFunctionReturnFast()

◆ branchTarget()

◆ getSuccessors()

◆ newInstructionDecoder()

◆ newUnparser()