Load the native call wrapper via Thread.

runtime/vm/stub_code_mips.cc

 // Copyright (c) 2013, the Dart project authors.  Please see the AUTHORS file
 // for details. All rights reserved. Use of this source code is governed by a
 // BSD-style license that can be found in the LICENSE file.
 
 #include "vm/globals.h"
 #if defined(TARGET_ARCH_MIPS)
 
 #include "vm/assembler.h"
 #include "vm/code_generator.h"
 #include "vm/compiler.h"
@@ skipping 181 matching lines @@
   __ addiu(SP, SP, Immediate(-4 * kWordSize));
   __ sw(A3, Address(SP, 3 * kWordSize));
   __ sw(A2, Address(SP, 2 * kWordSize));
   __ sw(A1, Address(SP, 1 * kWordSize));
   __ sw(A0, Address(SP, 0 * kWordSize));
   __ mov(A0, SP);  // Pass the pointer to the NativeArguments.
 
 
   __ mov(A1, T5);  // Pass the function entrypoint.
   __ ReserveAlignedFrameSpace(2 * kWordSize);  // Just passing A0, A1.
+
   // Call native wrapper function or redirection via simulator.
-#if defined(USING_SIMULATOR)
-  uword entry = reinterpret_cast<uword>(NativeEntry::NativeCallWrapper);
-  entry = Simulator::RedirectExternalReference(
-      entry, Simulator::kNativeCall, NativeEntry::kNumCallWrapperArguments);
-  __ LoadImmediate(T9, entry);
+  __ lw(T9, Address(THR, Thread::native_call_wrapper_entry_point_offset()));
   __ jalr(T9);
-#else
-  __ BranchLink(&NativeEntry::NativeCallWrapperLabel(), kNotPatchable);
-#endif
   __ Comment("CallNativeCFunctionStub return");
 
   // Mark that the isolate is executing Dart code.
   __ LoadImmediate(A2, VMTag::kDartTagId);
   __ sw(A2, Address(S2, Isolate::vm_tag_offset()));
 
   // Reset exit frame information in Isolate structure.
   __ sw(ZR, Address(THR, Thread::top_exit_frame_info_offset()));
 
   __ LeaveStubFrameAndReturn();
@@ skipping 2055 matching lines @@
 // Result:
 //  T1: entry point.
 void StubCode::GenerateMegamorphicLookupStub(Assembler* assembler) {
   EmitMegamorphicLookup(assembler, T0, T1, T1);
   __ Ret();
 }
 
 }  // namespace dart
 
 #endif  // defined TARGET_ARCH_MIPS