[compiler] Sanitize entry points to LookupSlot access.

src/full-codegen/x87/full-codegen-x87.cc

Index: src/full-codegen/x87/full-codegen-x87.cc
diff --git a/src/full-codegen/x87/full-codegen-x87.cc b/src/full-codegen/x87/full-codegen-x87.cc
index 3c019b8c6e13a604232325bc14d06f0c343009b2..c533966c7cb3d914f460ce38a29eced7f6c2d8ac 100644
--- a/src/full-codegen/x87/full-codegen-x87.cc
+++ b/src/full-codegen/x87/full-codegen-x87.cc
@@ -2349,11 +2349,11 @@ void FullCodeGenerator::EmitVariableAssignment(Variable* var, Token::Value op,
              (var->mode() == CONST && op == Token::INIT)) {
     if (var->IsLookupSlot()) {
       // Assignment to var.
-      __ push(eax);  // Value.
-      __ push(esi);  // Context.
-      __ push(Immediate(var->name()));
-      __ push(Immediate(Smi::FromInt(language_mode())));
-      __ CallRuntime(Runtime::kStoreLookupSlot);
+      __ Push(var->name());
+      __ Push(eax);
+      __ CallRuntime(is_strict(language_mode())
+                         ? Runtime::kStoreLookupSlot_Strict
+                         : Runtime::kStoreLookupSlot_Sloppy);
     } else {
       // Assignment to var or initializing assignment to let/const in harmony
       // mode.
@@ -2693,11 +2693,10 @@ void FullCodeGenerator::PushCalleeAndWithBaseObject(Call* expr) {
     __ bind(&slow);
     // Call the runtime to find the function to call (returned in eax) and
     // the object holding it (returned in edx).
-    __ push(context_register());
-    __ push(Immediate(callee->name()));
-    __ CallRuntime(Runtime::kLoadLookupSlot);
-    __ push(eax);  // Function.
-    __ push(edx);  // Receiver.
+    __ Push(callee->name());
+    __ CallRuntime(Runtime::kLoadLookupSlotForCall);
+    __ Push(eax);  // Function.
+    __ Push(edx);  // Receiver.
     PrepareForBailoutForId(expr->LookupId(), NO_REGISTERS);
 
     // If fast case code has been generated, emit code to push the function