VM: New calling convention for generated code.

runtime/vm/raw_object.h

Index: runtime/vm/raw_object.h
diff --git a/runtime/vm/raw_object.h b/runtime/vm/raw_object.h
index bf37591c8ae8950a7c05d519ecbef375bddb72da..376e2f1342b3e6a557614145d4c6ccec024d21f0 100644
--- a/runtime/vm/raw_object.h
+++ b/runtime/vm/raw_object.h
@@ -571,6 +571,7 @@ class RawObject {
   friend class MarkingVisitor;
   friend class Object;
   friend class OneByteString;  // StoreSmi
+  friend class RawCode;
   friend class RawExternalTypedData;
   friend class RawInstructions;
   friend class RawInstance;
@@ -585,6 +586,7 @@ class RawObject {
   friend class TypedDataView;
   friend class WeakProperty;  // StorePointer
   friend class Instance;  // StorePointer
+  friend class StackFrame;  // GetCodeObject assertion.
 
   DISALLOW_ALLOCATION();
   DISALLOW_IMPLICIT_CONSTRUCTORS(RawObject);
@@ -761,7 +763,7 @@ class RawFunction : public RawObject {
   RawObject** to_no_code() {
     return reinterpret_cast<RawObject**>(&ptr()->ic_data_array_);
   }
-  RawInstructions* instructions_;  // Instructions of currently active code.
+  RawCode* code_;  // Currently active code.
   RawCode* unoptimized_code_;  // Unoptimized code, keep it after optimization.
   RawObject** to() {
     return reinterpret_cast<RawObject**>(&ptr()->unoptimized_code_);
@@ -977,6 +979,7 @@ class RawCode : public RawObject {
     return reinterpret_cast<RawObject**>(&ptr()->instructions_);
   }
   RawInstructions* instructions_;
+  RawObjectPool* object_pool_;
   // If owner_ is Function::null() the owner is a regular stub.
   // If owner_ is a Class the owner is the allocation stub for that class.
   // Else, owner_ is a regular Dart Function.
@@ -1014,6 +1017,8 @@ class RawCode : public RawObject {
   int32_t* data() { OPEN_ARRAY_START(int32_t, int32_t); }
   const int32_t* data() const { OPEN_ARRAY_START(int32_t, int32_t); }
 
+  static bool ContainsPC(RawObject* raw_obj, uword pc);
+
   friend class Function;
   friend class MarkingVisitor;
   friend class StackFrame;
@@ -1044,14 +1049,6 @@ class RawObjectPool : public RawObject {
 class RawInstructions : public RawObject {
   RAW_HEAP_OBJECT_IMPLEMENTATION(Instructions);
 
-  RawObject** from() {
-    return reinterpret_cast<RawObject**>(&ptr()->code_);
-  }
-  RawCode* code_;
-  RawObjectPool* object_pool_;
-  RawObject** to() {
-    return reinterpret_cast<RawObject**>(&ptr()->object_pool_);
-  }
   int32_t size_;
 
   // Variable length data follows here.