Implement set trap for proxies, and revamp class hierarchy in preparation

src/ia32/builtins-ia32.cc

Index: src/ia32/builtins-ia32.cc
diff --git a/src/ia32/builtins-ia32.cc b/src/ia32/builtins-ia32.cc
index 44f0a977dca4e227046c37cb8596c6fcb4ec71bd..1dffae95468188bf8cd449833e93dd06aa895d1f 100644
--- a/src/ia32/builtins-ia32.cc
+++ b/src/ia32/builtins-ia32.cc
@@ -359,8 +359,8 @@ static void Generate_JSConstructStubHelper(MacroAssembler* masm,
   __ j(zero, &use_receiver);
 
   // If the type of the result (stored in its map) is less than
-  // FIRST_JS_OBJECT_TYPE, it is not an object in the ECMA sense.
-  __ CmpObjectType(eax, FIRST_JS_OBJECT_TYPE, ecx);
+  // FIRST_SPEC_OBJECT_TYPE, it is not an object in the ECMA sense.
+  __ CmpObjectType(eax, FIRST_SPEC_OBJECT_TYPE, ecx);
   __ j(above_equal, &exit);
 
   // Throw away the result of the constructor invocation and use the
@@ -617,8 +617,9 @@ void Builtins::Generate_FunctionCall(MacroAssembler* masm) {
     // We don't use IsObjectJSObjectType here because we jump on success.
     __ mov(ecx, FieldOperand(ebx, HeapObject::kMapOffset));
     __ movzx_b(ecx, FieldOperand(ecx, Map::kInstanceTypeOffset));
-    __ sub(Operand(ecx), Immediate(FIRST_JS_OBJECT_TYPE));
-    __ cmp(ecx, LAST_JS_OBJECT_TYPE - FIRST_JS_OBJECT_TYPE);
+    __ sub(Operand(ecx), Immediate(FIRST_NONCALLABLE_SPEC_OBJECT_TYPE));
+    __ cmp(ecx, LAST_NONCALLABLE_SPEC_OBJECT_TYPE -
+                FIRST_NONCALLABLE_SPEC_OBJECT_TYPE);
     __ j(below_equal, &shift_arguments);
 
     __ bind(&convert_to_object);
@@ -780,8 +781,9 @@ void Builtins::Generate_FunctionApply(MacroAssembler* masm) {
   // We don't use IsObjectJSObjectType here because we jump on success.
   __ mov(ecx, FieldOperand(ebx, HeapObject::kMapOffset));
   __ movzx_b(ecx, FieldOperand(ecx, Map::kInstanceTypeOffset));
-  __ sub(Operand(ecx), Immediate(FIRST_JS_OBJECT_TYPE));
-  __ cmp(ecx, LAST_JS_OBJECT_TYPE - FIRST_JS_OBJECT_TYPE);
+  __ sub(Operand(ecx), Immediate(FIRST_NONCALLABLE_SPEC_OBJECT_TYPE));
+  __ cmp(ecx, LAST_NONCALLABLE_SPEC_OBJECT_TYPE -
+              FIRST_NONCALLABLE_SPEC_OBJECT_TYPE);
   __ j(below_equal, &push_receiver);
 
   // Convert the receiver to an object.