Invoke CallToRuntime via Thread instead of ObjectPools.

runtime/vm/assembler_arm64.cc

 // Copyright (c) 2014, 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"  // NOLINT
 #if defined(TARGET_ARCH_ARM64)
 
 #include "vm/assembler.h"
 #include "vm/cpu.h"
 #include "vm/longjump.h"
@@ skipping 594 matching lines @@
   ldr(TMP, FieldAddress(CODE_REG, Code::entry_point_offset()));
   blr(TMP);
 }
 
 
 void Assembler::BranchLinkPatchable(const StubEntry& stub_entry) {
   BranchLink(stub_entry, kPatchable);
 }
 
 
+void Assembler::BranchLinkToRuntime() {
+  ldr(LR, Address(THR, Thread::call_to_runtime_entry_point_offset()));
+  ldr(CODE_REG, Address(THR, Thread::call_to_runtime_stub_offset()));
+  blr(LR);
+}
+
+
 void Assembler::BranchLinkWithEquivalence(const StubEntry& stub_entry,
                                           const Object& equivalence) {
   const Code& target = Code::Handle(stub_entry.code());
   const int32_t offset = ObjectPool::element_offset(
       object_pool_wrapper_.FindObject(target, equivalence));
   LoadWordFromPoolOffset(CODE_REG, offset);
   ldr(TMP, FieldAddress(CODE_REG, Code::entry_point_offset()));
   blr(TMP);
 }
 
@@ skipping 860 matching lines @@
     add(base, array, Operand(index, LSL, shift));
   }
   const OperandSize size = Address::OperandSizeFor(cid);
   ASSERT(Address::CanHoldOffset(offset, Address::Offset, size));
   return Address(base, offset, Address::Offset, size);
 }
 
 }  // namespace dart
 
 #endif  // defined TARGET_ARCH_ARM64