Revert "VM: New calling convention for generated code."

runtime/vm/debugger.cc

Index: runtime/vm/debugger.cc
diff --git a/runtime/vm/debugger.cc b/runtime/vm/debugger.cc
index ca49376e9b6c08a463fa377e83fa17817d6aea17..e0dd4a9b3993aace4e9f87df2164157db449a7db 100644
--- a/runtime/vm/debugger.cc
+++ b/runtime/vm/debugger.cc
@@ -220,7 +220,6 @@ void Breakpoint::PrintJSON(JSONStream* stream) {
 
 void CodeBreakpoint::VisitObjectPointers(ObjectPointerVisitor* visitor) {
   visitor->VisitPointer(reinterpret_cast<RawObject**>(&code_));
-  visitor->VisitPointer(reinterpret_cast<RawObject**>(&saved_value_));
 }
 
 
@@ -1114,7 +1113,7 @@ CodeBreakpoint::CodeBreakpoint(const Code& code,
       bpt_location_(NULL),
       next_(NULL),
       breakpoint_kind_(kind),
-      saved_value_(Code::null()) {
+      saved_value_(0) {
   ASSERT(!code.IsNull());
   ASSERT(token_pos_ > 0);
   ASSERT(pc_ != 0);
@@ -1398,9 +1397,7 @@ RawArray* Debugger::DeoptimizeToArray(Isolate* isolate,
   DeoptContext* deopt_context =
       new DeoptContext(frame, code,
                        DeoptContext::kDestIsAllocated,
-                       NULL,
-                       NULL,
-                       true);
+                       NULL, NULL);
   isolate->set_deopt_context(deopt_context);
 
   deopt_context->FillDestFrame();
@@ -3009,13 +3006,13 @@ CodeBreakpoint* Debugger::GetCodeBreakpoint(uword breakpoint_address) {
 }
 
 
-RawCode* Debugger::GetPatchedStubAddress(uword breakpoint_address) {
+uword Debugger::GetPatchedStubAddress(uword breakpoint_address) {
   CodeBreakpoint* bpt = GetCodeBreakpoint(breakpoint_address);
   if (bpt != NULL) {
     return bpt->OrigStubAddress();
   }
   UNREACHABLE();
-  return Code::null();
+  return 0L;
 }