Default Interface Method Prototype (#10505)

* allow non-zero RVA on abstract interface method in ilasm

* Revert "allow non-zero RVA on abstract interface method in ilasm"

This reverts commit eecb8024e58f14a20e5e49359f38019f5768ac41.

* add a test case and allow virtual non-abstract method in ilasm

* allow non-abstract methods in the loader

* fixup dispatch map

* support for simple default interface method scenario

* fix a bug with incorrect usage of MethodIterator skpping the first method. add a test case for overriding but it may not be what we want

* add another simple test case for base class

* allow private/internal methods in ilasm and add a explict impl test

* update reference to mscorlib in il test

* add shared generics and variance case

* allow interface dispatch to return instantiating stubs with the right PARAM_TYPE calling conv

* simple factoring and add a valuetype test case

* add a test case for generic virtual methods

* a bit more refactoring by moving the CALLCONV_PARAMTYPE logic inside getMethodSigInternal

* support explicit methodimpl and remove implicit methodimpl test case

* update test cases to give more clear output

* Fix a bug where GetMethodDescForSlot chokes on interface MethodDesc without precode. This is accdentally discovered by methodimpl test case when iterating methods on a default interface method that has already been JITted

* cleanup code after review and add a bit more comments

* update comments

* only use custom ILAsm for default interface methods tests - some tests are choking on CoreCLR ilasm for security related stuff

* address comments and allow instance methods, and add a constraint value type call test scenario

* disable the failing protected method scenario

1 files changed, 8 insertions, 0 deletions

diff --git a/src/vm/methodtable.h b/src/vm/methodtable.h
index d3eb0ce9b5..11296b09d6 100644
--- a/src/vm/methodtable.h
+++ b/src/vm/methodtable.h
@@ -2485,6 +2485,14 @@ public:
         UINT32         slotNumber, 
         DispatchSlot * pImplSlot);
 
+
+#ifndef DACCESS_COMPILE
+    BOOL FindDefaultMethod(
+        MethodDesc *pInterfaceMD,
+        MethodTable *pObjectMT,
+        MethodDesc **ppDefaultMethod);
+#endif // DACCESS_COMPILE
+
     DispatchSlot FindDispatchSlot(UINT32 typeID, UINT32 slotNumber);
 
     DispatchSlot FindDispatchSlot(DispatchToken tok);