Fixing CI break caused by previous checkin of the unboxing stubs region to enable the RhGetCodeTarget API:

1) Stubs are still grouped, but by section now. Linker will merge/fold/sort the unboxing stubs by section name.
2) All unboxing stubs are delimited by __unbox_a and __unbox_z symbols
3) __unbox_a and __unbox_z works on all platforms (tested on ProjectN (no regressions verification), ProjectX single and multi-file, Windows CoreRT, Unbuntu CoreRT, and OSX CoreRT)
4) Implementation uses a registration mechanism for unboxing stubs regions, and is multi-file ready for CoreRT (uses a linked list of stub regions)

5) Deleting the R2R section of unboxing stubs since it doesn't work on non-windows. Using extern "C" variables instead.
6) Removing the module enumeration API exposed by the TypeLoaderCallbacks (no longer needed)

[tfs-changeset: 1672333]

1 files changed, 42 insertions, 1 deletions

diff --git a/src/Native/Runtime/RuntimeInstance.cpp b/src/Native/Runtime/RuntimeInstance.cpp
index 30dfc9328..b7254a401 100644
--- a/src/Native/Runtime/RuntimeInstance.cpp
+++ b/src/Native/Runtime/RuntimeInstance.cpp
@@ -297,7 +297,8 @@ RuntimeInstance::RuntimeInstance() :
     m_pStaticGCRefsDescChunkList(NULL),
     m_pThreadStaticGCRefsDescChunkList(NULL),
     m_pGenericUnificationHashtable(NULL),
-    m_conservativeStackReportingEnabled(false)
+    m_conservativeStackReportingEnabled(false),
+    m_pUnboxingStubsRegion(NULL)
 {
 }
 
@@ -430,6 +431,46 @@ extern "C" void __stdcall UnregisterCodeManager(ICodeManager * pCodeManager)
 }
 #endif
 
+bool RuntimeInstance::RegisterUnboxingStubs(PTR_VOID pvStartRange, UInt32 cbRange)
+{
+    ASSERT(pvStartRange != NULL && cbRange > 0);
+
+    UnboxingStubsRegion * pEntry = new (nothrow) UnboxingStubsRegion();
+    if (NULL == pEntry)
+        return false;
+
+    pEntry->m_pRegionStart = pvStartRange;
+    pEntry->m_cbRegion = cbRange;
+
+    do
+    {
+        pEntry->m_pNextRegion = m_pUnboxingStubsRegion;
+    } 
+    while (PalInterlockedCompareExchangePointer((void *volatile *)&m_pUnboxingStubsRegion, pEntry, pEntry->m_pNextRegion) != pEntry->m_pNextRegion);
+
+    return true;
+}
+
+bool RuntimeInstance::IsUnboxingStub(UInt8* pCode)
+{
+    UnboxingStubsRegion * pCurrent = m_pUnboxingStubsRegion;
+    while (pCurrent != NULL)
+    {
+        UInt8* pUnboxingStubsRegion = dac_cast<UInt8*>(pCurrent->m_pRegionStart);
+        if (pCode >= pUnboxingStubsRegion && pCode < (pUnboxingStubsRegion + pCurrent->m_cbRegion))
+            return true;
+
+        pCurrent = pCurrent->m_pNextRegion;
+    }
+
+    return false;
+}
+
+extern "C" bool __stdcall RegisterUnboxingStubs(PTR_VOID pvStartRange, UInt32 cbRange)
+{
+    return GetRuntimeInstance()->RegisterUnboxingStubs(pvStartRange, cbRange);
+}
+
 bool RuntimeInstance::RegisterTypeManager(TypeManager * pTypeManager)
 {
     TypeManagerEntry * pEntry = new (nothrow) TypeManagerEntry();