Adds the BreakpointRuntime stub to ARM and MIPS.

runtime/vm/stub_code_arm.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_ARM)
 
 #include "vm/assembler.h"
 #include "vm/code_generator.h"
 #include "vm/compiler.h"
@@ skipping 1740 matching lines @@
 
 
 void StubCode::GenerateTwoArgsUnoptimizedStaticCallStub(Assembler* assembler) {
   GenerateUsageCounterIncrement(assembler, R6);
   GenerateNArgsCheckInlineCacheStub(
       assembler, 2, kStaticCallMissHandlerTwoArgsRuntimeEntry);
 }
 
 
 void StubCode::GenerateBreakpointRuntimeStub(Assembler* assembler) {
-  __ Unimplemented("BreakpointRuntime stub");
+  __ Comment("BreakpointRuntime stub");
+  __ EnterStubFrame();
+  __ LoadImmediate(R0, reinterpret_cast<intptr_t>(Object::null()));
+  // Preserve arguments descriptor and make room for result.
+  __ PushList((1 << R0) | (1 << R4) | (1 << R5));
+  __ CallRuntime(kBreakpointRuntimeHandlerRuntimeEntry, 0);
+  __ PopList((1 << R0) | (1 << R4) | (1 << R5));
+  __ LeaveStubFrame();
+  __ bx(R0);
 }
 
 
 //  LR: return address (Dart code).
 //  R5: IC data (unoptimized static call).
 void StubCode::GenerateBreakpointStaticStub(Assembler* assembler) {
   // Create a stub frame as we are pushing some objects on the stack before
   // calling into the runtime.
   __ EnterStubFrame();
   __ LoadImmediate(R0, reinterpret_cast<intptr_t>(Object::null()));
@@ skipping 411 matching lines @@
   __ ldr(left, Address(SP, 4 * kWordSize));
   __ ldr(right, Address(SP, 3 * kWordSize));
   GenerateIdenticalWithNumberCheckStub(assembler, left, right, temp);
   __ PopList((1 << R0) | (1 << R1) | (1 << R2));
   __ Ret();
 }
 
 }  // namespace dart
 
 #endif  // defined TARGET_ARCH_ARM