Enable mixed mode assembly loading (#19542)

Bring back functionality for loading IJW assemblies and calling managed->native. Also add workaround to test case for the C++ compiler inserting calls to mscoree.

1 files changed, 7 insertions, 0 deletions

diff --git a/src/vm/methodtablebuilder.cpp b/src/vm/methodtablebuilder.cpp
index 08474ad3cf..cb3012f1e9 100644
--- a/src/vm/methodtablebuilder.cpp
+++ b/src/vm/methodtablebuilder.cpp
@@ -5955,6 +5955,13 @@ MethodTableBuilder::InitMethodDesc(
             pNewNMD->ndirect.m_cbStackArgumentSize = 0xFFFF;
 #endif // defined(_TARGET_X86_)
 
+            // If the RVA of a native method is set, this is an early-bound IJW call
+            if (RVA != 0 && IsMiUnmanaged(dwImplFlags) && IsMiNative(dwImplFlags))
+            {
+                // Note that we cannot initialize the stub directly now in the general case,
+                // as LoadLibrary may not have been performed yet.
+                pNewNMD->SetIsEarlyBound();
+            }
 
             pNewNMD->GetWriteableData()->m_pNDirectTarget = pNewNMD->GetNDirectImportThunkGlue()->GetEntrypoint();
         }