MIPS: remove most uses of Isolate::Current in arch specific files.

Port r16643 (b818da5)

BUG=
R=gergely@homejinni.com

Review URL: https://codereview.chromium.org/24108002

Patch from Balazs Kilvady <kilvadyb@homejinni.com>.

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@16657 ce2b1a6d-e550-0410-aec6-3dcde31c8c00

src/mips/assembler-mips-inl.h

@@ -338,7 +338,7 @@ bool RelocInfo::IsPatchedDebugBreakSlotSequence() {
 }
 
 
-void RelocInfo::Visit(ObjectVisitor* visitor) {
+void RelocInfo::Visit(Isolate* isolate, ObjectVisitor* visitor) {
   RelocInfo::Mode mode = rmode();
   if (mode == RelocInfo::EMBEDDED_OBJECT) {
     visitor->VisitEmbeddedPointer(this);
@@ -351,12 +351,11 @@ void RelocInfo::Visit(ObjectVisitor* visitor) {
   } else if (RelocInfo::IsCodeAgeSequence(mode)) {
     visitor->VisitCodeAgeSequence(this);
 #ifdef ENABLE_DEBUGGER_SUPPORT
-  // TODO(isolates): Get a cached isolate below.
   } else if (((RelocInfo::IsJSReturn(mode) &&
               IsPatchedReturnSequence()) ||
              (RelocInfo::IsDebugBreakSlot(mode) &&
              IsPatchedDebugBreakSlotSequence())) &&
-             Isolate::Current()->debug()->has_break_points()) {
+             isolate->debug()->has_break_points()) {
     visitor->VisitDebugTarget(this);
 #endif
   } else if (RelocInfo::IsRuntimeEntry(mode)) {

src/mips/assembler-mips.cc

@@ -238,15 +238,12 @@ void RelocInfo::PatchCodeWithCall(Address target, int guard_bytes) {
 // See assembler-mips-inl.h for inlined constructors.
 
 Operand::Operand(Handle<Object> handle) {
-#ifdef DEBUG
-  Isolate* isolate = Isolate::Current();
-#endif
   AllowDeferredHandleDereference using_raw_address;
   rm_ = no_reg;
   // Verify all Objects referred by code are NOT in new space.
   Object* obj = *handle;
-  ASSERT(!isolate->heap()->InNewSpace(obj));
   if (obj->IsHeapObject()) {
+    ASSERT(!HeapObject::cast(obj)->GetHeap()->InNewSpace(obj));
     imm32_ = reinterpret_cast<intptr_t>(handle.location());
     rmode_ = RelocInfo::EMBEDDED_OBJECT;
   } else {

src/mips/code-stubs-mips.cc

@@ -649,7 +649,7 @@ void DoubleToIStub::Generate(MacroAssembler* masm) {
 }
 
 
-bool WriteInt32ToHeapNumberStub::IsPregenerated() {
+bool WriteInt32ToHeapNumberStub::IsPregenerated(Isolate* isolate) {
   // These variants are compiled ahead of time.  See next method.
   if (the_int_.is(a1) &&
       the_heap_number_.is(v0) &&
@@ -2723,8 +2723,8 @@ bool CEntryStub::NeedsImmovableCode() {
 }
 
 
-bool CEntryStub::IsPregenerated() {
-  return (!save_doubles_ || Isolate::Current()->fp_stubs_generated()) &&
+bool CEntryStub::IsPregenerated(Isolate* isolate) {
+  return (!save_doubles_ || isolate->fp_stubs_generated()) &&
           result_size_ == 1;
 }
 
@@ -6585,7 +6585,7 @@ static const AheadOfTimeWriteBarrierStubList kAheadOfTime[] = {
 #undef REG
 
 
-bool RecordWriteStub::IsPregenerated() {
+bool RecordWriteStub::IsPregenerated(Isolate* isolate) {
   for (const AheadOfTimeWriteBarrierStubList* entry = kAheadOfTime;
        !entry->object.is(no_reg);
        entry++) {

src/mips/code-stubs-mips.h

@@ -69,7 +69,7 @@ class StoreBufferOverflowStub: public PlatformCodeStub {
 
   void Generate(MacroAssembler* masm);
 
-  virtual bool IsPregenerated() { return true; }
+  virtual bool IsPregenerated(Isolate* isolate) V8_OVERRIDE { return true; }
   static void GenerateFixedRegStubsAheadOfTime(Isolate* isolate);
   virtual bool SometimesSetsUpAFrame() { return false; }
 
@@ -240,7 +240,7 @@ class WriteInt32ToHeapNumberStub : public PlatformCodeStub {
     ASSERT(SignRegisterBits::is_valid(sign_.code()));
   }
 
-  bool IsPregenerated();
+  virtual bool IsPregenerated(Isolate* isolate) V8_OVERRIDE;
   static void GenerateFixedRegStubsAheadOfTime(Isolate* isolate);
 
  private:
@@ -316,7 +316,7 @@ class RecordWriteStub: public PlatformCodeStub {
     INCREMENTAL_COMPACTION
   };
 
-  virtual bool IsPregenerated();
+  virtual bool IsPregenerated(Isolate* isolate) V8_OVERRIDE;
   static void GenerateFixedRegStubsAheadOfTime(Isolate* isolate);
   virtual bool SometimesSetsUpAFrame() { return false; }
 

src/mips/debug-mips.cc

@@ -60,7 +60,7 @@ void BreakLocationIterator::SetDebugBreakAtReturn() {
   // li and Call pseudo-instructions emit two instructions each.
   patcher.masm()->li(v8::internal::t9,
       Operand(reinterpret_cast<int32_t>(
-          Isolate::Current()->debug()->debug_break_return()->entry())));
+        debug_info_->GetIsolate()->debug()->debug_break_return()->entry())));
   patcher.masm()->Call(v8::internal::t9);
   patcher.masm()->nop();
   patcher.masm()->nop();
@@ -105,7 +105,7 @@ void BreakLocationIterator::SetDebugBreakAtSlot() {
   //   call t9          (jalr t9 / nop instruction pair)
   CodePatcher patcher(rinfo()->pc(), Assembler::kDebugBreakSlotInstructions);
   patcher.masm()->li(v8::internal::t9, Operand(reinterpret_cast<int32_t>(
-      Isolate::Current()->debug()->debug_break_slot()->entry())));
+      debug_info_->GetIsolate()->debug()->debug_break_slot()->entry())));
   patcher.masm()->Call(v8::internal::t9);
 }
 

src/mips/ic-mips.cc

@@ -359,7 +359,7 @@ void CallICBase::GenerateMonomorphicCacheProbe(MacroAssembler* masm,
                                          extra_state,
                                          Code::NORMAL,
                                          argc);
-  Isolate::Current()->stub_cache()->GenerateProbe(
+  masm->isolate()->stub_cache()->GenerateProbe(
       masm, flags, a1, a2, a3, t0, t1, t2);
 
   // If the stub cache probing failed, the receiver might be a value.
@@ -395,7 +395,7 @@ void CallICBase::GenerateMonomorphicCacheProbe(MacroAssembler* masm,
 
   // Probe the stub cache for the value object.
   __ bind(&probe);
-  Isolate::Current()->stub_cache()->GenerateProbe(
+  masm->isolate()->stub_cache()->GenerateProbe(
       masm, flags, a1, a2, a3, t0, t1, t2);
 
   __ bind(&miss);
@@ -658,7 +658,7 @@ void LoadIC::GenerateMegamorphic(MacroAssembler* masm) {
   Code::Flags flags = Code::ComputeFlags(
       Code::STUB, MONOMORPHIC, Code::kNoExtraICState,
       Code::NORMAL, Code::LOAD_IC);
-  Isolate::Current()->stub_cache()->GenerateProbe(
+  masm->isolate()->stub_cache()->GenerateProbe(
       masm, flags, a0, a2, a3, t0, t1, t2);
 
   // Cache miss: Jump to runtime.
@@ -1498,7 +1498,7 @@ void StoreIC::GenerateMegamorphic(MacroAssembler* masm,
   Code::Flags flags = Code::ComputeFlags(
       Code::STUB, MONOMORPHIC, strict_mode,
       Code::NORMAL, Code::STORE_IC);
-  Isolate::Current()->stub_cache()->GenerateProbe(
+  masm->isolate()->stub_cache()->GenerateProbe(
       masm, flags, a1, a2, a3, t0, t1, t2);
 
   // Cache miss: Jump to runtime.

src/mips/regexp-macro-assembler-mips.cc

@@ -882,7 +882,7 @@ Handle<HeapObject> RegExpMacroAssemblerMIPS::GetCode(Handle<String> source) {
   masm_->GetCode(&code_desc);
   Handle<Code> code = isolate()->factory()->NewCode(
       code_desc, Code::ComputeFlags(Code::REGEXP), masm_->CodeObject());
-  LOG(Isolate::Current(), RegExpCodeCreateEvent(*code, *source));
+  LOG(masm_->isolate(), RegExpCodeCreateEvent(*code, *source));
   return Handle<HeapObject>::cast(code);
 }
 
@@ -1086,7 +1086,6 @@ int RegExpMacroAssemblerMIPS::CheckStackGuardState(Address* return_address,
                                                    Code* re_code,
                                                    Address re_frame) {
   Isolate* isolate = frame_entry<Isolate*>(re_frame, kIsolate);
-  ASSERT(isolate == Isolate::Current());
   if (isolate->stack_guard()->IsStackOverflow()) {
     isolate->StackOverflow();
     return EXCEPTION;