[compiler] Sanitize entry points to LookupSlot access.

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

 // Copyright 2012 the V8 project authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #if V8_TARGET_ARCH_X87
 
 #include "src/ast/scopes.h"
 #include "src/code-factory.h"
 #include "src/code-stubs.h"
 #include "src/codegen.h"
@@ skipping 2331 matching lines @@
     __ j(equal, &uninitialized_this);
     __ push(Immediate(var->name()));
     __ CallRuntime(Runtime::kThrowReferenceError);
     __ bind(&uninitialized_this);
     EmitStoreToStackLocalOrContextSlot(var, location);
 
   } else if (!var->is_const_mode() ||
              (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.
       DCHECK(var->IsStackAllocated() || var->IsContextSlot());
       MemOperand location = VarOperand(var, ecx);
       if (generate_debug_code_ && var->mode() == LET && op == Token::INIT) {
         // Check for an uninitialized let binding.
         __ mov(edx, location);
         __ cmp(edx, isolate()->factory()->the_hole_value());
         __ Check(equal, kLetBindingReInitialization);
@@ skipping 319 matching lines @@
   if (callee->var()->IsLookupSlot()) {
     Label slow, done;
     SetExpressionPosition(callee);
     // Generate code for loading from variables potentially shadowed by
     // eval-introduced variables.
     EmitDynamicLookupFastCase(callee, NOT_INSIDE_TYPEOF, &slow, &done);
 
     __ 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
     // and receiver and have the slow path jump around this code.
     if (done.is_linked()) {
       Label call;
       __ jmp(&call, Label::kNear);
       __ bind(&done);
       // Push function.
       __ push(eax);
@@ skipping 1853 matching lines @@
             Assembler::target_address_at(call_target_address,
                                          unoptimized_code));
   return OSR_AFTER_STACK_CHECK;
 }
 
 
 }  // namespace internal
 }  // namespace v8
 
 #endif  // V8_TARGET_ARCH_X87