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

src/x64/virtual-frame-x64.cc

 // Copyright 2011 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 1106 matching lines @@
   Handle<Code> ic(Builtins::builtin(Builtins::KeyedLoadIC_Initialize));
   return RawCallCodeObject(ic, mode);
 }
 
 
 Result VirtualFrame::CallStoreIC(Handle<String> name,
                                  bool is_contextual,
                                  StrictModeFlag strict_mode) {
   // Value and (if not contextual) receiver are on top of the frame.
   // The IC expects name in rcx, value in rax, and receiver in rdx.
-  Handle<Code> ic(Builtins::builtin(strict_mode == kStrictMode
-      ? Builtins::StoreIC_Initialize_Strict
-      : Builtins::StoreIC_Initialize));
+  Handle<Code> ic(Builtins::builtin(
+      strict_mode == kStrictMode ? Builtins::StoreIC_Initialize_Strict
+                                 : Builtins::StoreIC_Initialize));
   Result value = Pop();
   RelocInfo::Mode mode;
   if (is_contextual) {
     PrepareForCall(0, 0);
     value.ToRegister(rax);
     __ movq(rdx, Operand(rsi, Context::SlotOffset(Context::GLOBAL_INDEX)));
     value.Unuse();
     mode = RelocInfo::CODE_TARGET_CONTEXT;
   } else {
     Result receiver = Pop();
     PrepareForCall(0, 0);
     MoveResultsToRegisters(&value, &receiver, rax, rdx);
     mode = RelocInfo::CODE_TARGET;
   }
   __ Move(rcx, name);
   return RawCallCodeObject(ic, mode);
 }
 
 
-Result VirtualFrame::CallKeyedStoreIC() {
+Result VirtualFrame::CallKeyedStoreIC(StrictModeFlag strict_mode) {
   // Value, key, and receiver are on the top of the frame.  The IC
   // expects value in rax, key in rcx, and receiver in rdx.
   Result value = Pop();
   Result key = Pop();
   Result receiver = Pop();
   PrepareForCall(0, 0);
   if (!cgen()->allocator()->is_used(rax) ||
       (value.is_register() && value.reg().is(rax))) {
     if (!cgen()->allocator()->is_used(rax)) {
       value.ToRegister(rax);
@@ skipping 23 matching lines @@
       __ xchg(rax, rcx);
     } else {
       __ xchg(rax, rcx);
       __ xchg(rax, rdx);
     }
     value.Unuse();
     key.Unuse();
     receiver.Unuse();
   }
 
-  Handle<Code> ic(Builtins::builtin(Builtins::KeyedStoreIC_Initialize));
+  Handle<Code> ic(Builtins::builtin(
+      strict_mode == kStrictMode ? Builtins::KeyedStoreIC_Initialize_Strict
+                                 : Builtins::KeyedStoreIC_Initialize));
   return RawCallCodeObject(ic, RelocInfo::CODE_TARGET);
 }
 
 
 Result VirtualFrame::CallCallIC(RelocInfo::Mode mode,
                                 int arg_count,
                                 int loop_nesting) {
   // Function name, arguments, and receiver are found on top of the frame
   // and dropped by the call.  The IC expects the name in rcx and the rest
   // on the stack, and drops them all.
@@ skipping 59 matching lines @@
   Adjust(kHandlerSize - 1);
   __ PushTryHandler(IN_JAVASCRIPT, type);
 }
 
 
 #undef __
 
 } }  // namespace v8::internal
 
 #endif  // V8_TARGET_ARCH_X64