Package ghidra.app.util.bin.format.golang

Class GoFunctionFixup

java.lang.Object

ghidra.app.util.bin.format.golang.GoFunctionFixup

public class GoFunctionFixup
extends Object

Utility class to fix Golang function parameter storage

Constructor Summary

Constructors

Constructor	Description
GoFunctionFixup()

Method Summary

Modifier and Type	Method	Description
static void	fixupFunction(Function func)	Assigns custom storage for a function's parameters, using the function's current parameter list (formal info only) as starting information.
static void	fixupFunction(Function func, GoVer goVersion)	Assigns custom storage for a function's parameters, using the function's current parameter list (formal info only) as starting information.
static boolean	isGolangAbi0Func(Function func)
static boolean	isInLocalVarStorageArea(Function func, long stackOffset)
static DataType	makeEmptyArrayDataType(DataType dt)	Returns a Ghidra data type that represents a zero-length array, to be used as a replacement for a zero-length array parameter.
static void	reverseNonStackStorageLocations(List<Varnode> varnodes)	Invert the order of the any register storage locations to match the decompiler's logic for assigning storage to structs that varies on endianness.

Methods inherited from class java.lang.Object

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

Constructor Details

GoFunctionFixup

public GoFunctionFixup()

Method Details

fixupFunction

public static void fixupFunction(Function func)
                          throws DuplicateNameException,
InvalidInputException

Assigns custom storage for a function's parameters, using the function's current parameter list (formal info only) as starting information.

Parameters:

func - Ghidra Function to fix

Throws:

DuplicateNameException - if invalid parameter names

InvalidInputException - if invalid data types or storage

fixupFunction

public static void fixupFunction(Function func,
 GoVer goVersion)
                          throws DuplicateNameException,
InvalidInputException

Assigns custom storage for a function's parameters, using the function's current parameter list (formal info only) as starting information.

Parameters:

func - Ghidra Function to fix

goVersion - GoVer enum

Throws:

DuplicateNameException - if invalid parameter names

InvalidInputException - if invalid data types or storage

makeEmptyArrayDataType

public static DataType makeEmptyArrayDataType(DataType dt)

Returns a Ghidra data type that represents a zero-length array, to be used as a replacement for a zero-length array parameter.

Parameters:

dt - data type that will donate its name to the created empty array type

Returns:

DataType that represents a specific zero-length array type

isGolangAbi0Func

public static boolean isGolangAbi0Func(Function func)

isInLocalVarStorageArea

public static boolean isInLocalVarStorageArea(Function func,
 long stackOffset)

reverseNonStackStorageLocations

public static void reverseNonStackStorageLocations(List<Varnode> varnodes)

Invert the order of the any register storage locations to match the decompiler's logic for assigning storage to structs that varies on endianness.

Only valid for storage scheme that has all register storages listed first / contiguous.

Parameters:

varnodes - list of varnodes that will be modified in-place