(early draft) Strict mode - throw exception on assignment to read only property.

src/arm/stub-cache-arm.cc

 // Copyright 2006-2009 the V8 project authors. All rights reserved.
 // Redistribution and use in source and binary forms, with or without
 // modification, are permitted provided that the following conditions are
 // met:
 //
 //     * Redistributions of source code must retain the above copyright
 //       notice, this list of conditions and the following disclaimer.
 //     * Redistributions in binary form must reproduce the above
 //       copyright notice, this list of conditions and the following
 //       disclaimer in the documentation and/or other materials provided
@@ skipping 2653 matching lines @@
   if (receiver->IsJSGlobalProxy()) {
     __ CheckAccessGlobalProxy(r1, r3, &miss);
   }
 
   // Stub is never generated for non-global objects that require access
   // checks.
   ASSERT(receiver->IsJSGlobalProxy() || !receiver->IsAccessCheckNeeded());
 
   __ Push(r1, r2, r0);  // Receiver, name, value.
 
+  __ mov(r0, Operand(Smi::FromInt(strict_mode_)));
+  __ push(r0);  // strict mode
+
   // Do tail-call to the runtime system.
   ExternalReference store_ic_property =
       ExternalReference(IC_Utility(IC::kStoreInterceptorProperty));
-  __ TailCallExternalReference(store_ic_property, 3, 1);
+  __ TailCallExternalReference(store_ic_property, 4, 1);
 
   // Handle store cache miss.
   __ bind(&miss);
   Handle<Code> ic(Builtins::builtin(Builtins::StoreIC_Miss));
   __ Jump(ic, RelocInfo::CODE_TARGET);
 
   // Return the generated code.
   return GetCode(INTERCEPTOR, name);
 }
 
@@ skipping 1361 matching lines @@
   // ---------- S t a t e --------------
   //  -- r0     : value
   //  -- r1     : key
   //  -- r2     : receiver
   //  -- lr     : return address
   // -----------------------------------
 
   // Push receiver, key and value for runtime call.
   __ Push(r2, r1, r0);
 
-  __ TailCallRuntime(Runtime::kSetProperty, 3, 1);
+  __ mov(r1, Operand(Smi::FromInt(NONE)));  // PropertyAttributes
+  __ mov(r0, Operand(Smi::FromInt(
+      Code::ExtractExtraICStateFromFlags(flags) == kStrictMode
+        ? kStrictMode
+        : kNonStrictMode)));
+  __ Push(r1, r0);
+
+  __ TailCallRuntime(Runtime::kSetProperty, 5, 1);
 
   return GetCode(flags);
 }
 
 
 #undef __
 
 } }  // namespace v8::internal
 
 #endif  // V8_TARGET_ARCH_ARM