Package ghidra.program.util

Class LanguageTranslatorAdapter

java.lang.Object

ghidra.program.util.LanguageTranslatorAdapter

All Implemented Interfaces:

LanguageTranslator, ExtensionPoint

Direct Known Subclasses:

ProgramArchitectureTranslator

public abstract class LanguageTranslatorAdapter
extends Object
implements LanguageTranslator

LanguageTranslatorAdapter provides a default language translator behavior which may be extended to provide customized language translations.

Field Summary

Fields

Modifier and Type	Field	Description
protected static final String	DEFAULT_COMPILER_SPEC_ID

Constructor Summary

Constructors

Modifier	Constructor	Description
protected	LanguageTranslatorAdapter(LanguageID oldLanguageID, int oldLanguageVersion, LanguageID newLanguageID, int newLanguageVersion)	Constructor for customized language translators which want to leverage some of the default language mappings.
protected	LanguageTranslatorAdapter(Language oldLanguage, Language newLanguage)	Constructor for default translator.

Method Summary

Modifier and Type	Method	Description
protected static AddressSpace	findSpaceSameName(AddressSpace oldSpace, ArrayList<AddressSpace> newSpaces)
void	fixupInstructions(Program program, Language oldLanguage, TaskMonitor monitor)	Invoked after Program language upgrade has completed.
static LanguageTranslator	getDefaultLanguageTranslator(Language oldLanguage, Language newLanguage)	Return a validated default translator if one can be determined.
AddressSpace	getNewAddressSpace(String oldSpaceName)	Translate BASE address spaces (Overlay spaces are not handled)
CompilerSpecID	getNewCompilerSpecID(CompilerSpecID oldCompilerSpecID)	Obtain the new compiler specification ID given the old compiler spec ID.
Register	getNewContextRegister()	Returns the new processor context register or null if not defined
Language	getNewLanguage()	Returns new language
LanguageID	getNewLanguageID()	Returns new language name
Register	getNewRegister(Register oldReg)	Find new register which corresponds to the specified old register.
RegisterValue	getNewRegisterValue(RegisterValue oldValue)	Get the translated register value
int	getNewVersion()	Returns new language version
CompilerSpec	getOldCompilerSpec(CompilerSpecID oldCompilerSpecID)	Get a compiler spec suitable for use with the old language.
Register	getOldContextRegister()	Returns the old processor context register or null if not defined
Language	getOldLanguage()	Returns old language
LanguageID	getOldLanguageID()	Returns old language name
Register	getOldRegister(Address oldAddr, int size)	Get the old register at the specified oldAddr.
Register	getOldRegisterContaining(Address oldAddr)	Get the largest old register which contains the specified oldAddr
int	getOldVersion()	Returns old language version
protected boolean	isSameRegisterConstruction(Register oldReg, Register newReg)
boolean	isValid()	Validate translator to complete initialization and ensure language compatibility.
boolean	isValueTranslationRequired(Register oldReg)	Returns true if register value translation required for program context.
String	toString()
protected final void	validateDefaultSpaceMap()	Build and validate the default address space map.

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, wait, wait, wait

Field Details

DEFAULT_COMPILER_SPEC_ID

protected static final String DEFAULT_COMPILER_SPEC_ID

See Also:

• Constant Field Values

Constructor Details

LanguageTranslatorAdapter

protected LanguageTranslatorAdapter(Language oldLanguage,
 Language newLanguage)

Constructor for default translator.

Parameters:

oldLanguage -

newLanguage -

LanguageTranslatorAdapter

protected LanguageTranslatorAdapter(LanguageID oldLanguageID,
 int oldLanguageVersion,
 LanguageID newLanguageID,
 int newLanguageVersion)

Constructor for customized language translators which want to leverage some of the default language mappings. Successful construction does not guarantee the two languages can utilize the default address space mapping. This constructor

Parameters:

oldLanguageID -

oldLanguageVersion -

newLanguageID -

newLanguageVersion -

See Also:

• validateDefaultSpaceMap()

Method Details

isValid

public boolean isValid()

Description copied from interface: LanguageTranslator

Validate translator to complete initialization and ensure language compatibility. This method will be invoked by the LanguageTranslatorFactory before handing out this translator.

Specified by:

isValid in interface LanguageTranslator

Returns:

true if translator successfully validated

validateDefaultSpaceMap

protected final void validateDefaultSpaceMap()
                                      throws IncompatibleLanguageException

Build and validate the default address space map. This method must be invoked following instantiation if the default address space mapping will be used.

Throws:

IncompatibleLanguageException - if a default mapping of the address spaces could not be identified.

See Also:

• getNewAddressSpace(String)

findSpaceSameName

protected static AddressSpace findSpaceSameName(AddressSpace oldSpace,
 ArrayList<AddressSpace> newSpaces)
                                         throws IncompatibleLanguageException

Throws:

IncompatibleLanguageException

getOldLanguage

public Language getOldLanguage()

Description copied from interface: LanguageTranslator

Returns old language

Specified by:

getOldLanguage in interface LanguageTranslator

See Also:

• LanguageTranslator.isValid()

getOldLanguageID

public LanguageID getOldLanguageID()

Description copied from interface: LanguageTranslator

Returns old language name

Specified by:

getOldLanguageID in interface LanguageTranslator

getOldVersion

public int getOldVersion()

Description copied from interface: LanguageTranslator

Returns old language version

Specified by:

getOldVersion in interface LanguageTranslator

getNewLanguage

public Language getNewLanguage()

Description copied from interface: LanguageTranslator

Returns new language

Specified by:

getNewLanguage in interface LanguageTranslator

getNewLanguageID

public LanguageID getNewLanguageID()

Description copied from interface: LanguageTranslator

Returns new language name

Specified by:

getNewLanguageID in interface LanguageTranslator

getNewVersion

public int getNewVersion()

Description copied from interface: LanguageTranslator

Returns new language version

Specified by:

getNewVersion in interface LanguageTranslator

getOldRegister

public Register getOldRegister(Address oldAddr,
 int size)

Description copied from interface: LanguageTranslator

Get the old register at the specified oldAddr. This will null if the specified address is offcut within the register. The smallest register will be returned which is greater than or equal to the specified size.

Specified by:

getOldRegister in interface LanguageTranslator

Parameters:

oldAddr - old register address.

size - minimum register size

Returns:

old register or null if suitable register can not be found.

See Also:

• LanguageTranslator.getOldRegisterContaining(Address)

getOldRegisterContaining

public Register getOldRegisterContaining(Address oldAddr)

Description copied from interface: LanguageTranslator

Get the largest old register which contains the specified oldAddr

Specified by:

getOldRegisterContaining in interface LanguageTranslator

Parameters:

oldAddr - old register address which may be offcut

Returns:

old register or null if suitable register can not be found.

getOldContextRegister

public Register getOldContextRegister()

Description copied from interface: LanguageTranslator

Returns the old processor context register or null if not defined

Specified by:

getOldContextRegister in interface LanguageTranslator

getNewRegister

public Register getNewRegister(Register oldReg)

Description copied from interface: LanguageTranslator

Find new register which corresponds to the specified old register.

Specified by:

getNewRegister in interface LanguageTranslator

Parameters:

oldReg - old register

Returns:

new register or null if corresponding register not found.

getNewContextRegister

public Register getNewContextRegister()

Description copied from interface: LanguageTranslator

Returns the new processor context register or null if not defined

Specified by:

getNewContextRegister in interface LanguageTranslator

getNewAddressSpace

public AddressSpace getNewAddressSpace(String oldSpaceName)

Description copied from interface: LanguageTranslator

Translate BASE address spaces (Overlay spaces are not handled)

Specified by:

getNewAddressSpace in interface LanguageTranslator

Parameters:

oldSpaceName - old space name

Returns:

corresponding address space in new language

isValueTranslationRequired

public boolean isValueTranslationRequired(Register oldReg)

Description copied from interface: LanguageTranslator

Returns true if register value translation required for program context.

Specified by:

isValueTranslationRequired in interface LanguageTranslator

See Also:

• LanguageTranslator.getNewRegisterValue(RegisterValue)

isSameRegisterConstruction

protected boolean isSameRegisterConstruction(Register oldReg,
 Register newReg)

getNewRegisterValue

public RegisterValue getNewRegisterValue(RegisterValue oldValue)

Description copied from interface: LanguageTranslator

Get the translated register value

Specified by:

getNewRegisterValue in interface LanguageTranslator

Parameters:

oldValue - old register value (may not be null)

Returns:

new register value or null if register not mapped

See Also:

• LanguageTranslator.isValueTranslationRequired(Register)

toString

public String toString()

Overrides:

toString in class Object

getNewCompilerSpecID

public CompilerSpecID getNewCompilerSpecID(CompilerSpecID oldCompilerSpecID)

Description copied from interface: LanguageTranslator

Obtain the new compiler specification ID given the old compiler spec ID.

Specified by:

getNewCompilerSpecID in interface LanguageTranslator

Parameters:

oldCompilerSpecID - old compiler spec ID.

Returns:

new compiler spec ID.

getOldCompilerSpec

public CompilerSpec getOldCompilerSpec(CompilerSpecID oldCompilerSpecID)
                                throws CompilerSpecNotFoundException

Description copied from interface: LanguageTranslator

Get a compiler spec suitable for use with the old language. The compiler spec returned is intended for upgrade use only prior to the setLanguage and may be based upon compiler conventions specified in the new compiler spec returned by getNewCompilerSpec given the same compilerSpecID.

Specified by:

getOldCompilerSpec in interface LanguageTranslator

Parameters:

oldCompilerSpecID - old compiler spec ID.

Returns:

compiler spec for use with old language

Throws:

CompilerSpecNotFoundException - if new compiler spec not found based upon translator mappings.

fixupInstructions

public void fixupInstructions(Program program,
 Language oldLanguage,
 TaskMonitor monitor)
                       throws Exception,
CancelledException

Description copied from interface: LanguageTranslator

Invoked after Program language upgrade has completed. Implementation of this method permits the final re-disassembled program to be examined/modified to address more complex language upgrades. This method will only be invoked on the latest translator, which means all complex multi-version post-upgrade concerns must factor in the complete language transition. The program's language information will still reflect the original pre-upgrade state, and if the program is undergoing a schema version upgrade as well, certain complex upgrades may not have been completed (e.g., Function and Variable changes). Program modifications should be restricted to instruction and instruction context changes only.

Specified by:

fixupInstructions in interface LanguageTranslator

oldLanguage - the oldest language involved in the current upgrade translation (this is passed since this is the only fixup invocation which must handle the any relevant fixup complexities when transitioning from the specified oldLanguage).

monitor - task monitor

Throws:

Exception - if a bad exception occurs with the post upgrade fixup

CancelledException - if upgrade cancelled

getDefaultLanguageTranslator

public static LanguageTranslator getDefaultLanguageTranslator(Language oldLanguage,
 Language newLanguage)

Return a validated default translator if one can be determined.

Parameters:

oldLanguage -

newLanguage -

Returns:

default translator or null if reasonable mappings can not be determined.