Package ghidra.pcode.emu.jit

Class JitPassage.DecodeErrorInstruction

java.lang.Object

ghidra.app.util.PseudoInstruction

ghidra.pcode.emu.jit.JitPassage.DecodeErrorInstruction

All Implemented Interfaces:

InstructionContext, ProcessorContext, ProcessorContextView, CodeUnit, Instruction, MemBuffer, PropertySet

Enclosing class:

JitPassage

public static class JitPassage.DecodeErrorInstruction
extends PseudoInstruction

An instruction denoting a decode error

The Sleigh disassembler normally denotes this with a PseudoInstruction having an InvalidPrototype. We essentially do the same here, but with custom types that are simpler to identify. Additionally, the types contain additional information, e.g., the error message. We also need the prototype to produce a single JitPassage.DecodeErrorPcodeOp.

Field Summary

Fields

Modifier and Type	Field	Description
protected Address	address
protected byte[]	bytes
protected Map<Integer,String>	comments
protected static final Address[]	emptyAddrArray
protected static final Reference[]	emptyMemRefs
protected int	hash
protected boolean	isBigEndian
protected int	length
protected Address	maxAddress
protected Program	program
protected ReferenceManager	refMgr

Fields inherited from interface ghidra.program.model.listing.CodeUnit

COMMENT_PROPERTY, DEFINED_DATA_PROPERTY, EOL_COMMENT, INSTRUCTION_PROPERTY, MNEMONIC, NO_COMMENT, PLATE_COMMENT, POST_COMMENT, PRE_COMMENT, REPEATABLE_COMMENT, SPACE_PROPERTY

Fields inherited from interface ghidra.program.model.listing.Instruction

INVALID_DEPTH_CHANGE, MAX_LENGTH_OVERRIDE

Constructor Summary

Constructors

Constructor	Description
DecodeErrorInstruction(Language language, Address address, RegisterValue ctx, String message)	Construct an instruction to indicate a decode error

Method Summary

Modifier and Type	Method	Description
void	addMnemonicReference(Address refAddr, RefType refType, SourceType sourceType)	Add a reference to the mnemonic for this code unit.
void	addOperandReference(int opIndex, Address refAddr, RefType type, SourceType sourceType)	Add a user defined reference to the operand at the given index.
int	compareTo(Address a)	Compares the given address to the address range of this node.
boolean	contains(Address testAddr)	Determines if this code unit contains the indicated address.
Address	getAddress()	Get the Address which corresponds to the offset 0.
String	getAddressString(boolean showBlockName, boolean pad)	Get the string representation of the starting address for this code unit.
BigInteger	getBigInteger(int offset, int size, boolean signed)	returns the value at the given offset, taking into account the endianness.
byte	getByte(int offset)	Get one byte from memory at the current position plus offset.
byte[]	getBytes()	Gets the bytes for this code unit.
int	getBytes(byte[] b, int offset)	Reads b.length bytes from this memory buffer starting at the address of this memory buffer plus the given memoryBufferOffset from that position.
void	getBytesInCodeUnit(byte[] buffer, int bufferOffset)	Copies max(buffer.length, code unit length) bytes into buffer starting at location offset in buffer.
String	getComment(int commentType)	Get the comment for the given type
String[]	getCommentAsArray(int commentType)	Get the comment as an array where each element is a single line for the given type.
ExternalReference	getExternalReference(int opIndex)	Gets the external reference (if any) at the opIndex
int	getInt(int offset)	returns the int at the given offset, taking into account the endianness.
int	getIntProperty(String name)	Get the int property for name.
String	getLabel()	Deprecated.
final int	getLength()	Get the length of the code unit.
long	getLong(int offset)	returns the long at the given offset, taking into account the endianness.
Address	getMaxAddress()	Get the ending address for this code unit.
Memory	getMemory()	Get the Memory object actually used by the MemBuffer.
String	getMessage()	Get the message for the exception, should this instruction be "executed"
Address	getMinAddress()	Get the starting address for this code unit.
Reference[]	getMnemonicReferences()	Get references for the mnemonic for this instruction.
CodeUnit	getNextCodeUnit()	Get the code unit after this code unit.
Saveable	getObjectProperty(String name)	Get the object property for name; returns null if there is no name property for this code unit.
CodeUnit	getPreviousCodeUnit()	Get the code unit before this code unit.
Reference	getPrimaryReference(int index)	Get the primary reference for the operand index.
Symbol	getPrimarySymbol()	Get the primary Symbol for this code unit.
Program	getProgram()	Returns the program that generated this CodeUnit.
ReferenceIterator	getReferenceIteratorTo()	Get an iterator over all references TO this code unit.
Reference[]	getReferencesFrom()	Get ALL reference FROM this code unit.
short	getShort(int offset)	returns the short at the given offset, taking into account the endianness.
StackReference	getStackReference(int opIndex)
String	getStringProperty(String name)	Get the string property for name; returns null if there is no name property for this code unit.
Symbol[]	getSymbols()	Get the symbols for this code unit.
boolean	getVoidProperty(String name)	Returns whether this code unit is marked as having the name property.
int	hashCode()
boolean	hasProperty(String name)	Returns true if the codeunit has the given property defined.
void	invalidate()	Invalidate memory buffer
boolean	isBigEndian()	Returns true if the underlying bytes are in big-endian order, false if they are little endian.
boolean	isValid()
Iterator<String>	propertyNames()	Get an iterator over the property names which have values applied.
protected void	refreshIfNeeded()
void	removeExternalReference(int opIndex)	Remove external reference (if any) at the given opIndex opIndex the index of the operand from which to remove any external reference.
void	removeMnemonicReference(Address refAddr)	Remove a reference to the mnemonic for this instruction.
void	removeOperandReference(int opIndex, Address refAddr)	Remove a user defined reference to the operand at opIndex.
void	removeProperty(String name)	Remove the property value with the given name for this code unit.
void	removeStackReference(int opIndex)
void	setComment(int commentType, String comment)	Set the comment for the given type.
void	setCommentAsArray(int commentType, String[] comment)	Set the comment for the given type.
void	setExternalReference(Reference ref)
void	setMemoryReference(int opIndex, Address refAddr, RefType refType)
void	setPrimaryMemoryReference(Reference ref)	Sets a memory reference to be the primary reference at its address/opIndex location.
void	setProperty(String name)	Mark the property name as having a value for this code unit.
void	setProperty(String name, int value)	Set the property name with the given value for this code unit.
void	setProperty(String name, Saveable value)	Set the property name with the given value for this code unit.
void	setProperty(String name, String value)	Set the property name with the given value for this code unit.
void	setRegisterReference(int opIndex, Register reg, SourceType sourceType, RefType refType)	Sets a register reference at the offset on the specified operand index, which effectively substitutes the previous operation interpretation NOTE: If another reference was previously set on the operand, then it will be replaced with this register reference
void	setStackReference(int opIndex, int offset, SourceType sourceType, RefType refType)	Sets a stack reference at the offset on the specified operand index, which effectively substitutes the previous operation interpretation NOTE: If another reference was previously set on the operand, then it will be replaced with this stack reference

Methods inherited from class ghidra.app.util.PseudoInstruction

clearFallThroughOverride, clearRegister, equals, getAddress, getBaseContextRegister, getDefaultFallThrough, getDefaultFallThroughOffset, getDefaultFlows, getDefaultOperandRepresentation, getDefaultOperandRepresentationList, getDelaySlotDepth, getFallFrom, getFallThrough, getFlowOverride, getFlows, getFlowType, getInputObjects, getInstructionContext, getMemBuffer, getMnemonicString, getNext, getNumOperands, getOperandReferences, getOperandRefType, getOperandType, getOpObjects, getParsedBytes, getParsedLength, getParserContext, getParserContext, getPcode, getPcode, getPcode, getPrevious, getProcessorContext, getPrototype, getRegister, getRegister, getRegisters, getRegisterValue, getRepeatedByte, getResultObjects, getScalar, getSeparator, getValue, hasFallthrough, hasValue, isFallthrough, isFallThroughOverridden, isInDelaySlot, isLengthOverridden, setFallThrough, setFlowOverride, setInstructionBlock, setLengthOverride, setRegisterValue, setValue, toString

Methods inherited from class java.lang.Object

clone, finalize, getClass, notify, notifyAll, wait, wait, wait

Methods inherited from interface ghidra.program.model.listing.CodeUnit

addMnemonicReference, addOperandReference, compareTo, contains, getAddressString, getBytes, getBytesInCodeUnit, getComment, getCommentAsArray, getExternalReference, getLabel, getLength, getMaxAddress, getMinAddress, getMnemonicReferences, getPrimaryReference, getPrimarySymbol, getProgram, getReferenceIteratorTo, getReferencesFrom, getSymbols, removeExternalReference, removeMnemonicReference, removeOperandReference, setComment, setCommentAsArray, setPrimaryMemoryReference, setRegisterReference, setStackReference

Methods inherited from interface ghidra.program.model.lang.InstructionContext

getAddress

Methods inherited from interface ghidra.program.model.mem.MemBuffer

getAddress, getBigInteger, getByte, getBytes, getInputStream, getInputStream, getInt, getLong, getMemory, getShort, getUnsignedByte, getUnsignedInt, getUnsignedShort, getVarLengthInt, getVarLengthUnsignedInt, isBigEndian, isInitializedMemory

Methods inherited from interface ghidra.program.model.util.PropertySet

getIntProperty, getObjectProperty, getStringProperty, getVoidProperty, hasProperty, propertyNames, removeProperty, setProperty, setProperty, setProperty, setProperty

Field Details

address

protected Address address

maxAddress

protected Address maxAddress

program

protected Program program

length

protected int length

emptyAddrArray

protected static final Address[] emptyAddrArray

hash

protected int hash

bytes

protected byte[] bytes

isBigEndian

protected boolean isBigEndian

emptyMemRefs

protected static final Reference[] emptyMemRefs

comments

protected Map<Integer,String> comments

refMgr

protected ReferenceManager refMgr

Constructor Details

DecodeErrorInstruction

public DecodeErrorInstruction(Language language,
 Address address,
 RegisterValue ctx,
 String message)
                       throws AddressOverflowException

Construct an instruction to indicate a decode error

Parameters:

language - the emulation target langauge

address - the address where decode was attempted

ctx - the input decode context

message - a message for the DecodePcodeExecutionException if the emulator attempts to execute this instruction

Throws:

AddressOverflowException - never

Method Details

getMessage

public String getMessage()

Get the message for the exception, should this instruction be "executed"

Returns:

the error message

invalidate

public void invalidate()

Invalidate memory buffer

isValid

public boolean isValid()

getAddressString

public String getAddressString(boolean showBlockName,
 boolean pad)

Description copied from interface: CodeUnit

Get the string representation of the starting address for this code unit.

Specified by:

getAddressString in interface CodeUnit

Parameters:

showBlockName - true if the string should include the memory block name

pad - if true, the address will be padded with leading zeros. Even if pad is false, the string will be padded to make the address string contain at least 4 digits.

Returns:

string representation of address

getLength

public final int getLength()

Get the length of the code unit.

Specified by:

getLength in interface CodeUnit

Returns:

code unit length

refreshIfNeeded

protected void refreshIfNeeded()

getBytes

public byte[] getBytes()
                throws MemoryAccessException

Gets the bytes for this code unit.

Specified by:

getBytes in interface CodeUnit

Returns:

an array of bytes that are in memory at the codeunits address. The array length is the same as the codeUnits length

Throws:

MemoryAccessException - if the full number of bytes could not be read.

getBytes

public int getBytes(byte[] b,
 int offset)

Description copied from interface: MemBuffer

Reads b.length bytes from this memory buffer starting at the address of this memory buffer plus the given memoryBufferOffset from that position. The actual number of bytes may be fewer if bytes can't be read.

Specified by:

getBytes in interface MemBuffer

Parameters:

b - the buffer into which bytes will be placed

offset - the offset in this memory buffer from which to start reading bytes.

Returns:

the number of bytes read which may be fewer than b.length if available bytes are exhausted or no bytes are available at the specified offset.

getBytesInCodeUnit

public void getBytesInCodeUnit(byte[] buffer,
 int bufferOffset)
                        throws MemoryAccessException

Description copied from interface: CodeUnit

Copies max(buffer.length, code unit length) bytes into buffer starting at location offset in buffer.

Specified by:

getBytesInCodeUnit in interface CodeUnit

Parameters:

buffer - byte array to copy into

bufferOffset - offset in byte array the copy will start

Throws:

MemoryAccessException - if the full number of bytes could not be read.

isBigEndian

public boolean isBigEndian()

Description copied from interface: MemBuffer

Returns true if the underlying bytes are in big-endian order, false if they are little endian.

Specified by:

isBigEndian in interface MemBuffer

Returns:

true if the underlying bytes are in big-endian order, false if they are little endian.

getShort

public short getShort(int offset)
               throws MemoryAccessException

Description copied from interface: MemBuffer

returns the short at the given offset, taking into account the endianness.

Specified by:

getShort in interface MemBuffer

Parameters:

offset - the offset from the membuffers origin (the address that it is set at)

Returns:

the short at the given offset, taking into account the endianness.

Throws:

MemoryAccessException - if a 2-byte short value cannot be read at the specified offset

getInt

public int getInt(int offset)
           throws MemoryAccessException

Description copied from interface: MemBuffer

returns the int at the given offset, taking into account the endianness.

Specified by:

getInt in interface MemBuffer

Parameters:

offset - the offset from the membuffers origin (the address that it is set at)

Returns:

the int at the given offset, taking into account the endianness.

Throws:

MemoryAccessException - if a 4-byte integer value cannot be read at the specified offset

getLong

public long getLong(int offset)
             throws MemoryAccessException

Description copied from interface: MemBuffer

returns the long at the given offset, taking into account the endianness.

Specified by:

getLong in interface MemBuffer

Parameters:

offset - the offset from the membuffers origin (the address that it is set at)

Returns:

the long at the given offset, taking into account the endianness.

Throws:

MemoryAccessException - if a 8-byte long value cannot be read at the specified offset

getBigInteger

public BigInteger getBigInteger(int offset,
 int size,
 boolean signed)
                         throws MemoryAccessException

Description copied from interface: MemBuffer

returns the value at the given offset, taking into account the endianness.

Specified by:

getBigInteger in interface MemBuffer

Parameters:

offset - the offset from the membuffers origin (the address that it is set at)

size - the number of bytes to include in the value

signed - true if value should be treated as a signed twos-compliment value.

Returns:

the value at the given offset, taking into account the endianness.

Throws:

MemoryAccessException - if the request size value cannot be read at the specified offset

setProperty

public void setProperty(String name,
 Saveable value)

Set the property name with the given value for this code unit.

Specified by:

setProperty in interface PropertySet

Parameters:

name - the name of the property to save.

value - the value of the property to save.

Throws:

TypeMismatchException - if the property manager for name does not support object types

ConcurrentModificationException - if this object is no longer valid.

setProperty

public void setProperty(String name,
 String value)

Set the property name with the given value for this code unit.

Specified by:

setProperty in interface PropertySet

Parameters:

name - the name of the property to save.

value - the value of the property to save.

Throws:

TypeMismatchException - if the property manager for name does not support string types

ConcurrentModificationException - if this object is no longer valid.

setProperty

public void setProperty(String name,
 int value)

Set the property name with the given value for this code unit.

Specified by:

setProperty in interface PropertySet

Parameters:

name - the name of the property to save.

value - the value of the property to save.

Throws:

TypeMismatchException - if the property manager for name does not support int types

ConcurrentModificationException - if this object is no longer valid.

setProperty

public void setProperty(String name)

Mark the property name as having a value for this code unit.

Specified by:

setProperty in interface PropertySet

Parameters:

name - the name of the property to save.

Throws:

TypeMismatchException - if the property manager for name does not support void types

ConcurrentModificationException - if this object is no longer valid.

getObjectProperty

public Saveable getObjectProperty(String name)

Get the object property for name; returns null if there is no name property for this code unit.

Specified by:

getObjectProperty in interface PropertySet

Parameters:

name - the name of the property.

Returns:

Saveable property value, with map-specific implementation class, or null.

Throws:

TypeMismatchException - if the property manager for name does not support object types

ConcurrentModificationException - if this object is no longer valid.

getStringProperty

public String getStringProperty(String name)

Get the string property for name; returns null if there is no name property for this code unit.

Specified by:

getStringProperty in interface PropertySet

Parameters:

name - the name of the property.

Returns:

string property value or null

Throws:

TypeMismatchException - if the property manager for name does not support string types

ConcurrentModificationException - if this object is no longer valid.

getIntProperty

public int getIntProperty(String name)
                   throws NoValueException

Get the int property for name.

Specified by:

getIntProperty in interface PropertySet

Parameters:

name - the name of the property.

Returns:

integer property value property has been set

Throws:

NoValueException - if there is not name property for this code unit

TypeMismatchException - if the property manager for name does not support int types

ConcurrentModificationException - if this object is no longer valid.

hasProperty

public boolean hasProperty(String name)

Description copied from interface: PropertySet

Returns true if the codeunit has the given property defined. This method works for all property map types.

Specified by:

hasProperty in interface PropertySet

Parameters:

name - the name of the property

Returns:

true if property has been set, else false

getVoidProperty

public boolean getVoidProperty(String name)

Returns whether this code unit is marked as having the name property.

Specified by:

getVoidProperty in interface PropertySet

Parameters:

name - the name of the property.

Returns:

true if property has been set, else false

Throws:

TypeMismatchException - if the property manager for name does not support void types

ConcurrentModificationException - if this object is no longer valid.

propertyNames

public Iterator<String> propertyNames()

Description copied from interface: PropertySet

Get an iterator over the property names which have values applied.

Specified by:

propertyNames in interface PropertySet

Returns:

iterator of all property map names which have values applied

removeProperty

public void removeProperty(String name)

Remove the property value with the given name for this code unit.

Specified by:

removeProperty in interface PropertySet

Parameters:

name - the name of the property.

getLabel

@Deprecated
public String getLabel()

Deprecated.

Get the label for this code unit.

Specified by:

getLabel in interface CodeUnit

Throws:

ConcurrentModificationException - if this object is no longer valid.

getSymbols

public Symbol[] getSymbols()

Get the symbols for this code unit.

Specified by:

getSymbols in interface CodeUnit

Throws:

ConcurrentModificationException - if this object is no longer valid.

getPrimarySymbol

public Symbol getPrimarySymbol()

Get the primary Symbol for this code unit.

Specified by:

getPrimarySymbol in interface CodeUnit

Throws:

ConcurrentModificationException - if this object is no longer valid.

getMinAddress

public Address getMinAddress()

Get the starting address for this code unit.

Specified by:

getMinAddress in interface CodeUnit

Throws:

ConcurrentModificationException - if this object is no longer valid.

getMaxAddress

public Address getMaxAddress()

Get the ending address for this code unit.

Specified by:

getMaxAddress in interface CodeUnit

Throws:

ConcurrentModificationException - if this object is no longer valid.

getNextCodeUnit

public CodeUnit getNextCodeUnit()

Get the code unit after this code unit.

Throws:

ConcurrentModificationException - if this object is no longer valid.

getPreviousCodeUnit

public CodeUnit getPreviousCodeUnit()

Get the code unit before this code unit.

Throws:

ConcurrentModificationException - if this object is no longer valid.

getComment

public String getComment(int commentType)

Description copied from interface: CodeUnit

Get the comment for the given type

Specified by:

getComment in interface CodeUnit

Parameters:

commentType - either EOL_COMMENT, PRE_COMMENT, POST_COMMENT, or REPEATABLE_COMMENT

Returns:

the comment string of the appropriate type or null if no comment of that type exists for this codeunit

getCommentAsArray

public String[] getCommentAsArray(int commentType)

Get the comment as an array where each element is a single line for the given type.

Specified by:

getCommentAsArray in interface CodeUnit

Parameters:

commentType - must be either EOL_COMMENT_TYPE, PRE_COMMENT_TYPE, POST_COMMENT_TYPE, or PLATE_COMMENT_TYPE

Returns:

an array of strings where each item in the array is a line of text in the comment. If there is no comment of the requested type, an empty array is returned.

Throws:

IllegalArgumentException - if type is not one of the three types of comments supported

ConcurrentModificationException - if this object is no longer valid.

setCommentAsArray

public void setCommentAsArray(int commentType,
 String[] comment)

Set the comment for the given type.

Specified by:

setCommentAsArray in interface CodeUnit

Parameters:

commentType - must be either EOL_COMMENT, PRE_COMMENT, POST_COMMENT, or PLATE_COMMENT

comment - the lines that make up the comment

Throws:

IllegalArgumentException - if type is not one of the three types of comments supported

ConcurrentModificationException - if this object is no longer valid.

setComment

public void setComment(int commentType,
 String comment)

Set the comment for the given type.

Specified by:

setComment in interface CodeUnit

Parameters:

commentType - must be either EOL_COMMENT, PRE_COMMENT, POST_COMMENT, or PLATE_COMMENT

comment - the comment

Throws:

IllegalArgumentException - if type is not one of the three types of comments supported

ConcurrentModificationException - if this object is no longer valid.

contains

public boolean contains(Address testAddr)

Determines if this code unit contains the indicated address.

Specified by:

contains in interface CodeUnit

Parameters:

testAddr - the address to test

Returns:

true if address is contained in the range.

Throws:

ConcurrentModificationException - if this object is no longer valid.

compareTo

public int compareTo(Address a)

Compares the given address to the address range of this node.

Specified by:

compareTo in interface CodeUnit

Parameters:

a - the address

Returns:

a negative integer if addr is greater than the maximum range address zero if addr is in the range a positive integer if addr is less than minimum range address

Throws:

ConcurrentModificationException - if this object is no longer valid.

getByte

public byte getByte(int offset)
             throws MemoryAccessException

Get one byte from memory at the current position plus offset.

Specified by:

getByte in interface MemBuffer

Parameters:

offset - the displacement from the current position.

Returns:

the data at offset from the current position.

Throws:

AddressOutOfBoundsException - if offset exceeds address space

IndexOutOfBoundsException - if offset is negative

MemoryAccessException - if memory cannot be read

getAddress

public Address getAddress()

Get the Address which corresponds to the offset 0.

Specified by:

getAddress in interface MemBuffer

Returns:

the current address of offset 0.

getMemory

public Memory getMemory()

Get the Memory object actually used by the MemBuffer. return the Memory used by this MemBuffer.

Specified by:

getMemory in interface MemBuffer

Returns:

the Memory used by this MemBuffer or null if not available.

addMnemonicReference

public void addMnemonicReference(Address refAddr,
 RefType refType,
 SourceType sourceType)

Add a reference to the mnemonic for this code unit.

Specified by:

addMnemonicReference in interface CodeUnit

Parameters:

refAddr - address of reference to add

refType - type of reference being added

sourceType - the source of this reference

getMnemonicReferences

public Reference[] getMnemonicReferences()

Get references for the mnemonic for this instruction.

Specified by:

getMnemonicReferences in interface CodeUnit

Returns:

an array of memory references. A zero length array will be returned if there are no references for the mnemonic.

removeMnemonicReference

public void removeMnemonicReference(Address refAddr)

Remove a reference to the mnemonic for this instruction.

Specified by:

removeMnemonicReference in interface CodeUnit

Parameters:

refAddr - the address to remove as a reference.

addOperandReference

public void addOperandReference(int opIndex,
 Address refAddr,
 RefType type,
 SourceType sourceType)

Add a user defined reference to the operand at the given index.

Specified by:

addOperandReference in interface CodeUnit

Parameters:

opIndex - operand index

refAddr - reference address

type - the reference type to be added.

sourceType - the source of this reference

See Also:

• CodeUnit.addOperandReference(int, Address, RefType, SourceType)

removeOperandReference

public void removeOperandReference(int opIndex,
 Address refAddr)

Remove a user defined reference to the operand at opIndex.

Specified by:

removeOperandReference in interface CodeUnit

Parameters:

opIndex - operand index

refAddr - address referencing the operand

getReferencesFrom

public Reference[] getReferencesFrom()

Get ALL reference FROM this code unit.

Specified by:

getReferencesFrom in interface CodeUnit

Returns:

an array of memory references from this codeUnit or an empty array if there are no references.

setExternalReference

public void setExternalReference(Reference ref)

setMemoryReference

public void setMemoryReference(int opIndex,
 Address refAddr,
 RefType refType)

setStackReference

public void setStackReference(int opIndex,
 int offset,
 SourceType sourceType,
 RefType refType)

Description copied from interface: CodeUnit

Sets a stack reference at the offset on the specified operand index, which effectively substitutes the previous operation interpretation
NOTE: If another reference was previously set on the operand, then it will be replaced with this stack reference

Specified by:

setStackReference in interface CodeUnit

Parameters:

opIndex - the index of the operand to set this stack reference

offset - the (+/-) offset from stack base address

sourceType - the source of this reference

refType - type of reference, RefType.READ,WRITE,PTR...

setRegisterReference

public void setRegisterReference(int opIndex,
 Register reg,
 SourceType sourceType,
 RefType refType)

Description copied from interface: CodeUnit

Sets a register reference at the offset on the specified operand index, which effectively substitutes the previous operation interpretation
NOTE: If another reference was previously set on the operand, then it will be replaced with this register reference

Specified by:

setRegisterReference in interface CodeUnit

Parameters:

opIndex - the index of the operand to set this register reference

reg - a register

sourceType - the source of this reference

refType - type of reference, RefType.READ,WRITE,PTR...

getPrimaryReference

public Reference getPrimaryReference(int index)

Description copied from interface: CodeUnit

Get the primary reference for the operand index.

Specified by:

getPrimaryReference in interface CodeUnit

Parameters:

index - operand index (0 is the first operand)

setPrimaryMemoryReference

public void setPrimaryMemoryReference(Reference ref)

Description copied from interface: CodeUnit

Sets a memory reference to be the primary reference at its address/opIndex location. The primary reference is the one that is used in the getOperandRepresentation() method.

Specified by:

setPrimaryMemoryReference in interface CodeUnit

Parameters:

ref - the reference to be set as primary.

getStackReference

public StackReference getStackReference(int opIndex)

removeStackReference

public void removeStackReference(int opIndex)

getExternalReference

public ExternalReference getExternalReference(int opIndex)

Description copied from interface: CodeUnit

Gets the external reference (if any) at the opIndex

Specified by:

getExternalReference in interface CodeUnit

Parameters:

opIndex - the operand index to look for external references

Returns:

the external reference at the operand or null if none exists.

removeExternalReference

public void removeExternalReference(int opIndex)

Description copied from interface: CodeUnit

Remove external reference (if any) at the given opIndex opIndex the index of the operand from which to remove any external reference.

Specified by:

removeExternalReference in interface CodeUnit

getReferenceIteratorTo

public ReferenceIterator getReferenceIteratorTo()

Description copied from interface: CodeUnit

Get an iterator over all references TO this code unit.

Specified by:

getReferenceIteratorTo in interface CodeUnit

getProgram

public Program getProgram()

Description copied from interface: CodeUnit

Returns the program that generated this CodeUnit.

Specified by:

getProgram in interface CodeUnit

hashCode

public int hashCode()

Overrides:

hashCode in class Object