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

src/ia32/ic-ia32.cc

Index: src/ia32/ic-ia32.cc
diff --git a/src/ia32/ic-ia32.cc b/src/ia32/ic-ia32.cc
index 73cd60df56f4b5d41cfb15452cc2f5b2c5b38c02..4e808d53501a5ec9085e4ae63378fbb2060bdaef 100644
--- a/src/ia32/ic-ia32.cc
+++ b/src/ia32/ic-ia32.cc
@@ -761,7 +761,8 @@ void KeyedLoadIC::GenerateIndexedInterceptor(MacroAssembler* masm) {
 }
 
 
-void KeyedStoreIC::GenerateGeneric(MacroAssembler* masm) {
+void KeyedStoreIC::GenerateGeneric(MacroAssembler* masm,
+                                   StrictModeFlag strict_mode) {
   // ----------- S t a t e -------------
   //  -- eax    : value
   //  -- ecx    : key
@@ -801,7 +802,7 @@ void KeyedStoreIC::GenerateGeneric(MacroAssembler* masm) {
 
   // Slow case: call runtime.
   __ bind(&slow);
-  GenerateRuntimeSetProperty(masm);
+  GenerateRuntimeSetProperty(masm, strict_mode);
 
   // Check whether the elements is a pixel array.
   __ bind(&check_pixel_array);
@@ -1617,7 +1618,7 @@ void StoreIC::GenerateNormal(MacroAssembler* masm) {
 }
 
 
-void StoreIC::GenerateGlobalProxy(MacroAssembler* masm) {
+void StoreIC::GenerateGlobalProxy(MacroAssembler* masm, StrictModeFlag strict) {
   // ----------- S t a t e -------------
   //  -- eax    : value
   //  -- ecx    : name
@@ -1628,14 +1629,17 @@ void StoreIC::GenerateGlobalProxy(MacroAssembler* masm) {
   __ push(edx);
   __ push(ecx);
   __ push(eax);
-  __ push(ebx);
+  __ push(Immediate(Smi::FromInt(NONE)));   // PropertyAttributes
+  __ push(Immediate(Smi::FromInt(strict)));
+  __ push(ebx);                             // return address
 
   // Do tail-call to runtime routine.
-  __ TailCallRuntime(Runtime::kSetProperty, 3, 1);
+  __ TailCallRuntime(Runtime::kSetProperty, 5, 1);
 }
 
 
-void KeyedStoreIC::GenerateRuntimeSetProperty(MacroAssembler* masm) {
+void KeyedStoreIC::GenerateRuntimeSetProperty(MacroAssembler* masm,
+                                              StrictModeFlag strict_mode) {
   // ----------- S t a t e -------------
   //  -- eax    : value
   //  -- ecx    : key
@@ -1647,10 +1651,12 @@ void KeyedStoreIC::GenerateRuntimeSetProperty(MacroAssembler* masm) {
   __ push(edx);
   __ push(ecx);
   __ push(eax);
-  __ push(ebx);
+  __ push(Immediate(Smi::FromInt(NONE)));         // PropertyAttributes
+  __ push(Immediate(Smi::FromInt(strict_mode)));  // Strict mode.
+  __ push(ebx);   // return address
 
   // Do tail-call to runtime routine.
-  __ TailCallRuntime(Runtime::kSetProperty, 3, 1);
+  __ TailCallRuntime(Runtime::kSetProperty, 5, 1);
 }