Move interpreter to ObjPtr

Moved most of interpreter, interpreter_common,
interpreter_switch_impl, and some of mterp to ObjPtr.

Bug: 31113334

Test: test-art-host ART_TEST_INTERPRETER=true
Test: art/tools/run-libcore-tests.sh '--mode=host' '--variant=X32' --debug

Change-Id: I0935d18287e1332205c17c5a018aa167788ab897
diff --git a/runtime/entrypoints/entrypoint_utils.cc b/runtime/entrypoints/entrypoint_utils.cc
index cbefbba..1ccb4b0 100644
--- a/runtime/entrypoints/entrypoint_utils.cc
+++ b/runtime/entrypoints/entrypoint_utils.cc
@@ -237,7 +237,7 @@
   }
 }
 
-bool FillArrayData(mirror::Object* obj, const Instruction::ArrayDataPayload* payload) {
+bool FillArrayData(ObjPtr<mirror::Object> obj, const Instruction::ArrayDataPayload* payload) {
   DCHECK_EQ(payload->ident, static_cast<uint16_t>(Instruction::kArrayDataSignature));
   if (UNLIKELY(obj == nullptr)) {
     ThrowNullPointerException("null array in FILL_ARRAY_DATA");