Very first steps for a debugger

runtime/vm/code_patcher_ia32.cc

 // Copyright (c) 2011, 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"  // Needed here to get TARGET_ARCH_IA32.
 #if defined(TARGET_ARCH_IA32)
 
 #include "vm/assembler.h"
 #include "vm/code_patcher.h"
 #include "vm/cpu.h"
@@ skipping 143 matching lines @@
   *function = call.function();
 }
 
 
 void CodePatcher::PatchStaticCallAt(uword return_address, uword new_target) {
   StaticCall call(return_address);
   call.set_target(new_target);
 }
 
 
+void CodePatcher::PatchInstanceCallAt(uword return_address, uword new_target) {
+  InstanceCall call(return_address);
+  call.set_target(new_target);
+}
+
+
 static void SwapCode(intptr_t num_bytes, char* a, char* b) {
   for (intptr_t i = 0; i < num_bytes; i++) {
     char tmp = *a;
     *a = *b;
     *b = tmp;
     a++;
     b++;
   }
 }
 
@@ skipping 86 matching lines @@
 }
 
 
 intptr_t CodePatcher::InstanceCallSizeInBytes() {
   return DartCallPattern::kNumInstructions * DartCallPattern::kInstructionSize;
 }
 
 }  // namespace dart
 
 #endif  // defined TARGET_ARCH_IA32