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Refactor MethodBase / MethodInfo

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This commit is contained in:
Katy Coe
2019-10-28 03:06:32 +01:00
parent 4e0f11bde4
commit 2e256909a6
4 changed files with 83 additions and 83 deletions
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73
Il2CppInspector/Reflection/MethodBase.cs
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@@ -13,6 +13,11 @@ namespace Il2CppInspector.Reflection
{
public abstract class MethodBase : MemberInfo
{
// IL2CPP-specific data
public Il2CppMethodDefinition Definition { get; }
public int Index { get; }
public ulong VirtualAddress { get; }
// Information/flags about the method
public MethodAttributes Attributes { get; protected set; }
@@ -41,7 +46,73 @@ namespace Il2CppInspector.Reflection
// TODO: GetMethodBody()
protected MethodBase(TypeInfo declaringType) : base(declaringType) { }
protected MethodBase(Il2CppInspector pkg, int methodIndex, TypeInfo declaringType) : base(declaringType) {
Definition = pkg.Methods[methodIndex];
Index = methodIndex;
Name = pkg.Strings[Definition.nameIndex];
// Find method pointer
if (Definition.methodIndex >= 0) {
// Global method pointer array
if (pkg.Version <= 24.1) {
VirtualAddress = pkg.GlobalMethodPointers[Definition.methodIndex];
}
// Per-module method pointer array uses the bottom 24 bits of the method's metadata token
// Derived from il2cpp::vm::MetadataCache::GetMethodPointer
else {
var method = (Definition.token & 0xffffff);
if (method != 0) {
// In the event of an exception, the method pointer is not set in the file
// This probably means it has been optimized away by the compiler, or is an unused generic method
try {
pkg.BinaryImage.Position = pkg.BinaryImage.MapVATR(Assembly.Module.methodPointers + (ulong)((method - 1) * (pkg.BinaryImage.Bits / 8)));
VirtualAddress = (ulong)pkg.BinaryImage.ReadWord();
}
catch (Exception) { }
}
}
// Remove ARM Thumb marker LSB if necessary
VirtualAddress &= 0xffff_ffff_ffff_fffe;
}
if ((Definition.flags & Il2CppConstants.METHOD_ATTRIBUTE_MEMBER_ACCESS_MASK) == Il2CppConstants.METHOD_ATTRIBUTE_PRIVATE)
Attributes |= MethodAttributes.Private;
if ((Definition.flags & Il2CppConstants.METHOD_ATTRIBUTE_MEMBER_ACCESS_MASK) == Il2CppConstants.METHOD_ATTRIBUTE_PUBLIC)
Attributes |= MethodAttributes.Public;
if ((Definition.flags & Il2CppConstants.METHOD_ATTRIBUTE_MEMBER_ACCESS_MASK) == Il2CppConstants.METHOD_ATTRIBUTE_FAM_AND_ASSEM)
Attributes |= MethodAttributes.FamANDAssem;
if ((Definition.flags & Il2CppConstants.METHOD_ATTRIBUTE_MEMBER_ACCESS_MASK) == Il2CppConstants.METHOD_ATTRIBUTE_ASSEM)
Attributes |= MethodAttributes.Assembly;
if ((Definition.flags & Il2CppConstants.METHOD_ATTRIBUTE_MEMBER_ACCESS_MASK) == Il2CppConstants.METHOD_ATTRIBUTE_FAMILY)
Attributes |= MethodAttributes.Family;
if ((Definition.flags & Il2CppConstants.METHOD_ATTRIBUTE_MEMBER_ACCESS_MASK) == Il2CppConstants.METHOD_ATTRIBUTE_FAM_OR_ASSEM)
Attributes |= MethodAttributes.FamORAssem;
if ((Definition.flags & Il2CppConstants.METHOD_ATTRIBUTE_VIRTUAL) != 0)
Attributes |= MethodAttributes.Virtual;
if ((Definition.flags & Il2CppConstants.METHOD_ATTRIBUTE_ABSTRACT) != 0)
Attributes |= MethodAttributes.Abstract;
if ((Definition.flags & Il2CppConstants.METHOD_ATTRIBUTE_STATIC) != 0)
Attributes |= MethodAttributes.Static;
if ((Definition.flags & Il2CppConstants.METHOD_ATTRIBUTE_FINAL) != 0)
Attributes |= MethodAttributes.Final;
if ((Definition.flags & Il2CppConstants.METHOD_ATTRIBUTE_HIDE_BY_SIG) != 0)
Attributes |= MethodAttributes.HideBySig;
if ((Definition.flags & Il2CppConstants.METHOD_ATTRIBUTE_VTABLE_LAYOUT_MASK) == Il2CppConstants.METHOD_ATTRIBUTE_NEW_SLOT)
Attributes |= MethodAttributes.NewSlot;
if ((Definition.flags & Il2CppConstants.METHOD_ATTRIBUTE_PINVOKE_IMPL) != 0)
Attributes |= MethodAttributes.PinvokeImpl;
if ((Definition.flags & Il2CppConstants.METHOD_ATTRIBUTE_SPECIAL_NAME) != 0)
Attributes |= MethodAttributes.SpecialName;
if ((Definition.flags & Il2CppConstants.METHOD_ATTRIBUTE_UNMANAGED_EXPORT) != 0)
Attributes |= MethodAttributes.UnmanagedExport;
// Add arguments
for (var p = Definition.parameterStart; p < Definition.parameterStart + Definition.parameterCount; p++)
DeclaredParameters.Add(new ParameterInfo(pkg, p, this));
}
public string GetModifierString() {
// Interface methods and properties have no visible modifiers (they are always declared 'public abstract')