Serializer: serialize internal references via object visitor.

src/x64/assembler-x64-inl.h

 // 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.
 
 #ifndef V8_X64_ASSEMBLER_X64_INL_H_
 #define V8_X64_ASSEMBLER_X64_INL_H_
 
 #include "src/x64/assembler-x64.h"
 
 #include "src/base/cpu.h"
@@ skipping 247 matching lines @@
                                       ConstantPoolArray* constant_pool,
                                       Address target,
                                       ICacheFlushMode icache_flush_mode) {
   Memory::int32_at(pc) = static_cast<int32_t>(target - pc - 4);
   if (icache_flush_mode != SKIP_ICACHE_FLUSH) {
     CpuFeatures::FlushICache(pc, sizeof(int32_t));
   }
 }
 
 
+void Assembler::deserialization_set_target_internal_reference_at(
+    Address pc, Address target) {
+  Memory::Address_at(pc) = target;
+}
+
+
 Address Assembler::target_address_from_return_address(Address pc) {
   return pc - kCallTargetAddressOffset;
 }
 
 
 Address Assembler::break_address_from_return_address(Address pc) {
   return pc - Assembler::kPatchDebugBreakSlotReturnOffset;
 }
 
 
@@ skipping 93 matching lines @@
   return Memory::Address_at(pc_);
 }
 
 
 Address RelocInfo::target_internal_reference() {
   DCHECK(rmode_ == INTERNAL_REFERENCE);
   return Memory::Address_at(pc_);
 }
 
 
-void RelocInfo::set_target_internal_reference(Address target) {
+Address RelocInfo::target_internal_reference_address() {
   DCHECK(rmode_ == INTERNAL_REFERENCE);
-  Memory::Address_at(pc_) = target;
+  return reinterpret_cast<Address>(pc_);
 }
 
 
 void RelocInfo::set_target_object(Object* target,
                                   WriteBarrierMode write_barrier_mode,
                                   ICacheFlushMode icache_flush_mode) {
   DCHECK(IsCodeTarget(rmode_) || rmode_ == EMBEDDED_OBJECT);
   Memory::Object_at(pc_) = target;
   if (icache_flush_mode != SKIP_ICACHE_FLUSH) {
     CpuFeatures::FlushICache(pc_, sizeof(Address));
@@ skipping 49 matching lines @@
       host() != NULL) {
     // TODO(1550) We are passing NULL as a slot because cell can never be on
     // evacuation candidate.
     host()->GetHeap()->incremental_marking()->RecordWrite(
         host(), NULL, cell);
   }
 }
 
 
 void RelocInfo::WipeOut() {
-  if (IsEmbeddedObject(rmode_) || IsExternalReference(rmode_)) {
+  if (IsEmbeddedObject(rmode_) || IsExternalReference(rmode_) ||
+      IsInternalReference(rmode_)) {
     Memory::Address_at(pc_) = NULL;
   } else if (IsCodeTarget(rmode_) || IsRuntimeEntry(rmode_)) {
     // Effectively write zero into the relocation.
     Assembler::set_target_address_at(pc_, host_, pc_ + sizeof(int32_t));
   } else {
     UNREACHABLE();
   }
 }
 
 
@@ skipping 83 matching lines @@
   RelocInfo::Mode mode = rmode();
   if (mode == RelocInfo::EMBEDDED_OBJECT) {
     visitor->VisitEmbeddedPointer(this);
     CpuFeatures::FlushICache(pc_, sizeof(Address));
   } else if (RelocInfo::IsCodeTarget(mode)) {
     visitor->VisitCodeTarget(this);
   } else if (mode == RelocInfo::CELL) {
     visitor->VisitCell(this);
   } else if (mode == RelocInfo::EXTERNAL_REFERENCE) {
     visitor->VisitExternalReference(this);
-    CpuFeatures::FlushICache(pc_, sizeof(Address));
+  } else if (mode == RelocInfo::INTERNAL_REFERENCE) {
+    visitor->VisitInternalReference(this);
   } else if (RelocInfo::IsCodeAgeSequence(mode)) {
     visitor->VisitCodeAgeSequence(this);
   } else if (((RelocInfo::IsJSReturn(mode) &&
               IsPatchedReturnSequence()) ||
              (RelocInfo::IsDebugBreakSlot(mode) &&
               IsPatchedDebugBreakSlotSequence())) &&
              isolate->debug()->has_break_points()) {
     visitor->VisitDebugTarget(this);
   } else if (RelocInfo::IsRuntimeEntry(mode)) {
     visitor->VisitRuntimeEntry(this);
   }
 }
 
 
 template<typename StaticVisitor>
 void RelocInfo::Visit(Heap* heap) {
   RelocInfo::Mode mode = rmode();
   if (mode == RelocInfo::EMBEDDED_OBJECT) {
     StaticVisitor::VisitEmbeddedPointer(heap, this);
     CpuFeatures::FlushICache(pc_, sizeof(Address));
   } else if (RelocInfo::IsCodeTarget(mode)) {
     StaticVisitor::VisitCodeTarget(heap, this);
   } else if (mode == RelocInfo::CELL) {
     StaticVisitor::VisitCell(heap, this);
   } else if (mode == RelocInfo::EXTERNAL_REFERENCE) {
     StaticVisitor::VisitExternalReference(this);
-    CpuFeatures::FlushICache(pc_, sizeof(Address));
+  } else if (mode == RelocInfo::INTERNAL_REFERENCE) {
+    StaticVisitor::VisitInternalReference(this);
   } else if (RelocInfo::IsCodeAgeSequence(mode)) {
     StaticVisitor::VisitCodeAgeSequence(heap, this);
   } else if (heap->isolate()->debug()->has_break_points() &&
              ((RelocInfo::IsJSReturn(mode) &&
               IsPatchedReturnSequence()) ||
              (RelocInfo::IsDebugBreakSlot(mode) &&
               IsPatchedDebugBreakSlotSequence()))) {
     StaticVisitor::VisitDebugTarget(heap, this);
   } else if (RelocInfo::IsRuntimeEntry(mode)) {
     StaticVisitor::VisitRuntimeEntry(this);
@@ skipping 40 matching lines @@
 
 void Operand::set_disp64(int64_t disp) {
   DCHECK_EQ(1, len_);
   int64_t* p = reinterpret_cast<int64_t*>(&buf_[len_]);
   *p = disp;
   len_ += sizeof(disp);
 }
 } }  // namespace v8::internal
 
 #endif  // V8_X64_ASSEMBLER_X64_INL_H_