Revert "[Arguments] Merge (7442,7496] from bleeding_edge."

src/ia32/macro-assembler-ia32.cc

Index: src/ia32/macro-assembler-ia32.cc
diff --git a/src/ia32/macro-assembler-ia32.cc b/src/ia32/macro-assembler-ia32.cc
index 40554980ede4ca5c83ffb7d85c4199b044713e44..ba30c49ced678c18fcc4658323e9ff779e38ecd6 100644
--- a/src/ia32/macro-assembler-ia32.cc
+++ b/src/ia32/macro-assembler-ia32.cc
@@ -41,14 +41,11 @@ namespace internal {
 // -------------------------------------------------------------------------
 // MacroAssembler implementation.
 
-MacroAssembler::MacroAssembler(Isolate* arg_isolate, void* buffer, int size)
-    : Assembler(arg_isolate, buffer, size),
+MacroAssembler::MacroAssembler(void* buffer, int size)
+    : Assembler(buffer, size),
       generating_stub_(false),
-      allow_stub_calls_(true) {
-  if (isolate() != NULL) {
-    code_object_ = Handle<Object>(isolate()->heap()->undefined_value(),
-                                  isolate());
-  }
+      allow_stub_calls_(true),
+      code_object_(isolate()->heap()->undefined_value()) {
 }
 
 
@@ -234,7 +231,7 @@ void MacroAssembler::IsInstanceJSObjectType(Register map,
 
 
 void MacroAssembler::FCmp() {
-  if (CpuFeatures::IsSupported(CMOV)) {
+  if (Isolate::Current()->cpu_features()->IsSupported(CMOV)) {
     fucomip();
     ffree(0);
     fincstp();
@@ -1991,14 +1988,17 @@ void MacroAssembler::JumpIfNotBothSequentialAsciiStrings(Register object1,
 
 
 void MacroAssembler::PrepareCallCFunction(int num_arguments, Register scratch) {
-  int frame_alignment = OS::ActivationFrameAlignment();
-  if (frame_alignment != 0) {
+  // Reserve space for Isolate address which is always passed as last parameter
+  num_arguments += 1;
+
+  int frameAlignment = OS::ActivationFrameAlignment();
+  if (frameAlignment != 0) {
     // Make stack end at alignment and make room for num_arguments words
     // and the original value of esp.
     mov(scratch, esp);
     sub(Operand(esp), Immediate((num_arguments + 1) * kPointerSize));
-    ASSERT(IsPowerOf2(frame_alignment));
-    and_(esp, -frame_alignment);
+    ASSERT(IsPowerOf2(frameAlignment));
+    and_(esp, -frameAlignment);
     mov(Operand(esp, num_arguments * kPointerSize), scratch);
   } else {
     sub(Operand(esp), Immediate(num_arguments * kPointerSize));
@@ -2016,6 +2016,11 @@ void MacroAssembler::CallCFunction(ExternalReference function,
 
 void MacroAssembler::CallCFunction(Register function,
                                    int num_arguments) {
+  // Pass current isolate address as additional parameter.
+  mov(Operand(esp, num_arguments * kPointerSize),
+      Immediate(ExternalReference::isolate_address()));
+  num_arguments += 1;
+
   // Check stack alignment.
   if (emit_debug_code()) {
     CheckStackAlignment();
@@ -2025,15 +2030,13 @@ void MacroAssembler::CallCFunction(Register function,
   if (OS::ActivationFrameAlignment() != 0) {
     mov(esp, Operand(esp, num_arguments * kPointerSize));
   } else {
-    add(Operand(esp), Immediate(num_arguments * kPointerSize));
+    add(Operand(esp), Immediate(num_arguments * sizeof(int32_t)));
   }
 }
 
 
 CodePatcher::CodePatcher(byte* address, int size)
-    : address_(address),
-      size_(size),
-      masm_(Isolate::Current(), address, size + Assembler::kGap) {
+    : address_(address), size_(size), masm_(address, size + Assembler::kGap) {
   // Create a new macro assembler pointing to the address of the code to patch.
   // The size is adjusted with kGap on order for the assembler to generate size
   // bytes of instructions without failing with buffer size constraints.