Invoke CallToRuntime via Thread instead of ObjectPools.

runtime/vm/assembler_mips.h

 // 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.
 
 #ifndef VM_ASSEMBLER_MIPS_H_
 #define VM_ASSEMBLER_MIPS_H_
 
 #ifndef VM_ASSEMBLER_H_
 #error Do not include assembler_mips.h directly; use assembler.h instead.
 #endif
@@ skipping 911 matching lines @@
     LoadImmediate(rd, imm);
     SubuDetectOverflow(rd, rs, rd, ro);
   }
 
   void Branch(const StubEntry& stub_entry, Register pp = PP);
 
   void BranchLink(const StubEntry& stub_entry,
                   Patchability patchable = kNotPatchable);
 
   void BranchLinkPatchable(const StubEntry& stub_entry);
+  void BranchLinkToRuntime();
 
   // Emit a call that shares its object pool entries with other calls
   // that have the same equivalence marker.
   void BranchLinkWithEquivalence(const StubEntry& stub_entry,
                                  const Object& equivalence);
 
   void Drop(intptr_t stack_elements) {
     ASSERT(stack_elements >= 0);
     if (stack_elements > 0) {
       addiu(SP, SP, Immediate(stack_elements * kWordSize));
@@ skipping 819 matching lines @@
                                   Register value,
                                   Label* no_update);
 
   DISALLOW_ALLOCATION();
   DISALLOW_COPY_AND_ASSIGN(Assembler);
 };
 
 }  // namespace dart
 
 #endif  // VM_ASSEMBLER_MIPS_H_