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

src/ia32/macro-assembler-ia32.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 23 matching lines @@
 #include "debug.h"
 #include "runtime.h"
 #include "serialize.h"
 
 namespace v8 {
 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()) {
 }
 
 
 void MacroAssembler::RecordWriteHelper(Register object,
                                        Register addr,
                                        Register scratch) {
   if (emit_debug_code()) {
     // Check that the object is not in new space.
     Label not_in_new_space;
     InNewSpace(object, scratch, not_equal, &not_in_new_space);
@@ skipping 165 matching lines @@
                                             Register scratch,
                                             Label* fail) {
   movzx_b(scratch, FieldOperand(map, Map::kInstanceTypeOffset));
   sub(Operand(scratch), Immediate(FIRST_JS_OBJECT_TYPE));
   cmp(scratch, LAST_JS_OBJECT_TYPE - FIRST_JS_OBJECT_TYPE);
   j(above, fail);
 }
 
 
 void MacroAssembler::FCmp() {
-  if (CpuFeatures::IsSupported(CMOV)) {
+  if (Isolate::Current()->cpu_features()->IsSupported(CMOV)) {
     fucomip();
     ffree(0);
     fincstp();
   } else {
     fucompp();
     push(eax);
     fnstsw_ax();
     sahf();
     pop(eax);
   }
@@ skipping 1736 matching lines @@
   ASSERT_EQ(0, kFlatAsciiStringMask & (kFlatAsciiStringMask << 3));
   and_(scratch1, kFlatAsciiStringMask);
   and_(scratch2, kFlatAsciiStringMask);
   lea(scratch1, Operand(scratch1, scratch2, times_8, 0));
   cmp(scratch1, kFlatAsciiStringTag | (kFlatAsciiStringTag << 3));
   j(not_equal, failure);
 }
 
 
 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));
   }
 }
 
 
 void MacroAssembler::CallCFunction(ExternalReference function,
                                    int num_arguments) {
   // Trashing eax is ok as it will be the return value.
   mov(Operand(eax), Immediate(function));
   CallCFunction(eax, num_arguments);
 }
 
 
 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();
   }
 
   call(Operand(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.
   ASSERT(masm_.reloc_info_writer.pos() == address_ + size_ + Assembler::kGap);
 }
 
 
 CodePatcher::~CodePatcher() {
   // Indicate that code has changed.
   CPU::FlushICache(address_, size_);
 
   // Check that the code was patched as expected.
   ASSERT(masm_.pc_ == address_ + size_);
   ASSERT(masm_.reloc_info_writer.pos() == address_ + size_ + Assembler::kGap);
 }
 
 
 } }  // namespace v8::internal
 
 #endif  // V8_TARGET_ARCH_IA32