Package ghidra.app.util.bin.format.macho.dyld

Class LibObjcOptimization

java.lang.Object

ghidra.app.util.bin.format.macho.dyld.LibObjcOptimization

All Implemented Interfaces:

StructConverter

public class LibObjcOptimization
extends Object
implements StructConverter

Represents a objc_opt_t structure, which resides in the libobjc DYLIB within a DYLD cache

See Also:

• dyld/include/objc-shared-cache.h

Field Summary

Fields

Modifier and Type	Field	Description
static final String	SECTION_NAME	The name of the section that contains the objc_opt_t_structure

Fields inherited from interface ghidra.app.util.bin.StructConverter

ASCII, BYTE, DWORD, IBO32, IBO64, POINTER, QWORD, SLEB128, STRING, ULEB128, UTF16, UTF8, VOID, WORD

Constructor Summary

Constructors

Constructor	Description
LibObjcOptimization(Program program, Address objcOptRoSectionAddr)	Create a new LibObjcOptimization.

Method Summary

Modifier and Type	Method	Description
long	getAddr()	Gets the address of the objc_opt_t structure
long	getRelativeSelectorBaseAddressOffset()	Gets the relative method selector base address offset.
void	markup(Program program, AddressSpace space, MessageLog log, TaskMonitor monitor)	Marks up up this structure in memory
DataType	toDataType()	Returns a structure datatype representing the contents of the implementor of this interface.

Methods inherited from class java.lang.Object

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

Field Details

SECTION_NAME

public static final String SECTION_NAME

The name of the section that contains the objc_opt_t_structure

See Also:

• Constant Field Values

Constructor Details

LibObjcOptimization

public LibObjcOptimization(Program program,
 Address objcOptRoSectionAddr)
                    throws IOException

Create a new LibObjcOptimization.

Parameters:

program - The Program

objcOptRoSectionAddr - The start address of the __objc_opt_ro section

Throws:

IOException - if there was an IO-related problem parsing the structure

Method Details

getAddr

public long getAddr()

Gets the address of the objc_opt_t structure

Returns:

The address of the objc_opt_t structure

getRelativeSelectorBaseAddressOffset

public long getRelativeSelectorBaseAddressOffset()

Gets the relative method selector base address offset. This will be 0 if the version is less than 16.

Returns:

The relative method selector base address offset

markup

public void markup(Program program,
 AddressSpace space,
 MessageLog log,
 TaskMonitor monitor)

Marks up up this structure in memory

Parameters:

program - The Program

space - The AddressSpace

log - The log

monitor - A cancelable task monitor

toDataType

public DataType toDataType()
                    throws DuplicateNameException,
IOException

Description copied from interface: StructConverter

Returns a structure datatype representing the contents of the implementor of this interface.

For example, given:

 class A {
     int foo;
     double bar;
 }
 

The return value should be a structure data type with two data type components; an INT and a DOUBLE. The structure should contain field names and, if possible, field comments.

Specified by:

toDataType in interface StructConverter

Returns:

returns a structure datatype representing the implementor of this interface

Throws:

DuplicateNameException - when a datatype of the same name already exists

IOException - if an IO-related error occurs

See Also:

• StructureDataType