Package ghidra.app.plugin.exceptionhandlers.gcc.structures.gccexcepttable

Class LSDAHeader

java.lang.Object

ghidra.app.plugin.exceptionhandlers.gcc.GccAnalysisClass

ghidra.app.plugin.exceptionhandlers.gcc.structures.gccexcepttable.LSDAHeader

public class LSDAHeader
extends GccAnalysisClass

Defines the bounds of exception unwinding support, within a function, and unwind procedures. * lpStartAddr is the program address where support begins. This value is encoded according to lpStartEncoding. * ttypeAddr is the location-relative program address, encoded per ttypeEncoding, of the associated C++ types table (types of thrown values).

Field Summary

Fields inherited from class ghidra.app.plugin.exceptionhandlers.gcc.GccAnalysisClass

dwordDT, monitor, NEWLINE, program, ptrDT, ptrSize

Constructor Summary

Constructors

Constructor	Description
LSDAHeader(TaskMonitor monitor, Program program, RegionDescriptor region)	Constructor for the LSDA header which indicates encoding for the LSDA tables.

Method Summary

Modifier and Type	Method	Description
void	create(Address addr)	Create a LSDA Header from the bytes at addr.
AddressRange	getBody()	Gets the address range containing the LSDA header.
int	getCallSiteTableEncoding()	Gets the dwarf encoding used for the call site table.
int	getCallSiteTableHeaderSize()	Get the size of the header in the call site table.
int	getCallSiteTableLength()	Gets the length of the call site table.
long	getHeaderSize()	Gets the size of this LSDA header.
Address	getLPStartAddress()	Gets the landing pad start address.
int	getLPStartEncoding()	Gets the indicator of the encoding used for the landing pad start.
Address	getNextAddress()	Gets the next address indicating the address after this LSDA header.
Address	getTTypeBaseAddress()	Gets the base address of the type table.
int	getTTypeEncoding()	Gets the encoding used for the type table.
int	getTTypeOffset()	The offset from the type offset field to get to the base address of the type table.
boolean	hasTypeTable()	Determines if this LSDA has a type table.

Methods inherited from class ghidra.app.plugin.exceptionhandlers.gcc.GccAnalysisClass

createAndCommentData, createData, init

Methods inherited from class java.lang.Object

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

Constructor Detail

LSDAHeader

public LSDAHeader(TaskMonitor monitor,
                  Program program,
                  RegionDescriptor region)

Constructor for the LSDA header which indicates encoding for the LSDA tables.
Note: The create(Address) method must be called after constructing an LSDAHeader to associate it with an address before any of its "get..." methods are called.

Parameters:

monitor - task monitor to see if the user has cancelled analysis.

program - the program containing this header.

region - the region of the program associated with this header.

Method Detail

create

public void create(Address addr)
            throws MemoryAccessException

Create a LSDA Header from the bytes at addr.
Note: This method must get called before any of the "get..." methods.

Parameters:

addr - the start (minimum address) of this LSDA header.

Throws:

MemoryAccessException - if memory for the header couldn't be read.

getNextAddress

public Address getNextAddress()

Gets the next address indicating the address after this LSDA header.

Returns:

the next address after this LSDA header or null if this LSDA header hasn't been created at any address yet.

getBody

public AddressRange getBody()

Gets the address range containing the LSDA header.

Returns:

the address range of the header

getHeaderSize

public long getHeaderSize()

Gets the size of this LSDA header.

Returns:

the header size

getLPStartEncoding

public int getLPStartEncoding()

Gets the indicator of the encoding used for the landing pad start.

Returns:

the LP start encoding

getLPStartAddress

public Address getLPStartAddress()

Gets the landing pad start address.

Returns:

the LP start address

hasTypeTable

public boolean hasTypeTable()

Determines if this LSDA has a type table.

Returns:

true if there is a type table

getTTypeEncoding

public int getTTypeEncoding()

Gets the encoding used for the type table.

Returns:

the value indicating the type table's encoding

getTTypeOffset

public int getTTypeOffset()

The offset from the type offset field to get to the base address of the type table.

Returns:

the type table offset

getTTypeBaseAddress

public Address getTTypeBaseAddress()

Gets the base address of the type table. The base address is the last byte (maximum address) of the type table. The type table is ordered in reverse.

Returns:

the type table's base address or Address.NO_ADDRESS

getCallSiteTableEncoding

public int getCallSiteTableEncoding()

Gets the dwarf encoding used for the call site table.

Returns:

the encoding value

getCallSiteTableLength

public int getCallSiteTableLength()

Gets the length of the call site table.

Returns:

the table length

getCallSiteTableHeaderSize

public int getCallSiteTableHeaderSize()

Get the size of the header in the call site table.

Returns:

the header size