Use GetCodeFromTargetAddress everywhere, uniformly.

Review URL: http://codereview.chromium.org/193111

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@2888 ce2b1a6d-e550-0410-aec6-3dcde31c8c00

src/assembler.cc

@@ -494,7 +494,7 @@ void RelocInfo::Verify() {
       Address addr = target_address();
       ASSERT(addr != NULL);
       // Check that we can find the right code object.
-      HeapObject* code = HeapObject::FromAddress(addr - Code::kHeaderSize);
+      Code* code = Code::GetCodeFromTargetAddress(addr);
       Object* found = Heap::FindCodeObject(addr);
       ASSERT(found->IsCode());
       ASSERT(code->address() == HeapObject::cast(found)->address());

src/mark-compact.cc

@@ -279,7 +279,7 @@ class MarkingVisitor : public ObjectVisitor {
 
   void VisitCodeTarget(RelocInfo* rinfo) {
     ASSERT(RelocInfo::IsCodeTarget(rinfo->rmode()));
-    Code* code = CodeFromDerivedPointer(rinfo->target_address());
+    Code* code = Code::GetCodeFromTargetAddress(rinfo->target_address());
     if (FLAG_cleanup_ics_at_gc && code->is_inline_cache_stub()) {
       IC::Clear(rinfo->pc());
       // Please note targets for cleared inline cached do not have to be
@@ -289,7 +289,7 @@ class MarkingVisitor : public ObjectVisitor {
     }
     if (IsCompacting()) {
       // When compacting we convert the target to a real object pointer.
-      code = CodeFromDerivedPointer(rinfo->target_address());
+      code = Code::GetCodeFromTargetAddress(rinfo->target_address());
       rinfo->set_target_object(code);
     }
   }
@@ -297,7 +297,7 @@ class MarkingVisitor : public ObjectVisitor {
   void VisitDebugTarget(RelocInfo* rinfo) {
     ASSERT(RelocInfo::IsJSReturn(rinfo->rmode()) &&
            rinfo->IsCallInstruction());
-    HeapObject* code = CodeFromDerivedPointer(rinfo->call_address());
+    HeapObject* code = Code::GetCodeFromTargetAddress(rinfo->call_address());
     MarkCompactCollector::MarkObject(code);
     // When compacting we convert the call to a real object pointer.
     if (IsCompacting()) rinfo->set_call_object(code);
@@ -314,13 +314,6 @@ class MarkingVisitor : public ObjectVisitor {
   // Tells whether the mark sweep collection will perform compaction.
   bool IsCompacting() { return MarkCompactCollector::IsCompacting(); }
 
-  // Retrieves the Code pointer from derived code entry.
-  Code* CodeFromDerivedPointer(Address addr) {
-    ASSERT(addr != NULL);
-    return reinterpret_cast<Code*>(
-        HeapObject::FromAddress(addr - Code::kHeaderSize));
-  }
-
   // Visit an unmarked object.
   void VisitUnmarkedObject(HeapObject* obj) {
 #ifdef DEBUG

src/objects.cc

@@ -4967,7 +4967,7 @@ void Code::ConvertICTargetsFromAddressToObject() {
        !it.done(); it.next()) {
     Address ic_addr = it.rinfo()->target_address();
     ASSERT(ic_addr != NULL);
-    HeapObject* code = HeapObject::FromAddress(ic_addr - Code::kHeaderSize);
+    HeapObject* code = Code::GetCodeFromTargetAddress(ic_addr);
     ASSERT(code->IsHeapObject());
     it.rinfo()->set_target_object(code);
   }
@@ -4980,7 +4980,7 @@ void Code::ConvertICTargetsFromAddressToObject() {
       if (it.rinfo()->IsCallInstruction()) {
         Address addr = it.rinfo()->call_address();
         ASSERT(addr != NULL);
-        HeapObject* code = HeapObject::FromAddress(addr - Code::kHeaderSize);
+        HeapObject* code = Code::GetCodeFromTargetAddress(addr);
         ASSERT(code->IsHeapObject());
         it.rinfo()->set_call_object(code);
       }