Created
August 24, 2018 20:27
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```csharp | |
private void SetupVTables(bool destructorOnly = false) | |
{ | |
if (__OriginalVTables != null) | |
return; | |
__OriginalVTables = new void*[] { *(void**) (__Instance + 0) }; | |
if (_Thunks == null) | |
{ | |
_Thunks = new void*[2]; | |
_dtorDelegateInstance += _dtorDelegateHook; | |
_Thunks[0] = Marshal.GetFunctionPointerForDelegate(_dtorDelegateInstance).ToPointer(); | |
_AbstractDelegateInstance += _AbstractDelegateHook; | |
_Thunks[1] = Marshal.GetFunctionPointerForDelegate(_AbstractDelegateInstance).ToPointer(); | |
} | |
if (destructorOnly) | |
{ | |
if (__ManagedVTablesDtorOnly == null) | |
{ | |
__ManagedVTablesDtorOnly = new void*[1]; | |
var vtptr = Marshal.AllocHGlobal(5 * 8); | |
var vfptr0 = vtptr + 2 * 8; | |
__ManagedVTablesDtorOnly[0] = vfptr0.ToPointer(); | |
*(void**) (vfptr0 + -16) = *(void**) (new IntPtr(*(void**) __Instance) + 0 + -16); | |
*(void**) (vfptr0 + -8) = *(void**) (new IntPtr(*(void**) __Instance) + 0 + -8); | |
*(void**) (vfptr0 + 0) = *(void**) (new IntPtr(*(void**) __Instance) + 0 + 0); | |
*(void**) (vfptr0 + 8) = _Thunks[0]; | |
*(void**) (vfptr0 + 16) = *(void**) (new IntPtr(*(void**) __Instance) + 0 + 16); | |
} | |
*(void**) (__Instance + 0) = __ManagedVTablesDtorOnly[0]; | |
} | |
``` | |
``` | |
Vtable for 'AbstractWithVirtualDtor' (5 entries). | |
0 | offset_to_top (0) | |
1 | AbstractWithVirtualDtor RTTI | |
-- (AbstractWithVirtualDtor, 0) vtable address -- | |
2 | AbstractWithVirtualDtor::~AbstractWithVirtualDtor() [complete] | |
3 | AbstractWithVirtualDtor::~AbstractWithVirtualDtor() [deleting] | |
4 | void AbstractWithVirtualDtor::abstract() [pure] | |
``` | |
``` | |
define void @_ZN23AbstractWithVirtualDtorD1Ev(%class.AbstractWithVirtualDtor*) unnamed_addr #0 align 2 !dbg !5037 { | |
%2 = alloca %class.AbstractWithVirtualDtor*, align 8 | |
store %class.AbstractWithVirtualDtor* %0, %class.AbstractWithVirtualDtor** %2, align 8 | |
call void @llvm.dbg.declare(metadata %class.AbstractWithVirtualDtor** %2, metadata !5038, metadata !DIExpression()), !dbg !5039 | |
%3 = load %class.AbstractWithVirtualDtor*, %class.AbstractWithVirtualDtor** %2, align 8 | |
call void @llvm.trap() #7, !dbg !5040 | |
} | |
``` |
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