Debugger: use debug break slots to break at function exit.

src/objects.cc

 // Copyright 2013 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.
 
 #include <iomanip>
 #include <sstream>
 
 #include "src/v8.h"
 
 #include "src/accessors.h"
@@ skipping 10745 matching lines @@
   Object* cell = rinfo->target_cell();
   Object* old_cell = cell;
   VisitPointer(&cell);
   if (cell != old_cell) {
     rinfo->set_target_cell(reinterpret_cast<Cell*>(cell));
   }
 }
 
 
 void ObjectVisitor::VisitDebugTarget(RelocInfo* rinfo) {
-  DCHECK((RelocInfo::IsJSReturn(rinfo->rmode()) &&
-          rinfo->IsPatchedReturnSequence()) ||
-         (RelocInfo::IsDebugBreakSlot(rinfo->rmode()) &&
-          rinfo->IsPatchedDebugBreakSlotSequence()));
-  Object* target = Code::GetCodeFromTargetAddress(rinfo->call_address());
+  DCHECK(RelocInfo::IsDebugBreakSlot(rinfo->rmode()) &&
+         rinfo->IsPatchedDebugBreakSlotSequence());
+  Object* target = Code::GetCodeFromTargetAddress(rinfo->debug_call_address());
   Object* old_target = target;
   VisitPointer(&target);
   CHECK_EQ(target, old_target);  // VisitPointer doesn't change Code* *target.
 }
 
 
 void ObjectVisitor::VisitEmbeddedPointer(RelocInfo* rinfo) {
   DCHECK(rinfo->rmode() == RelocInfo::EMBEDDED_OBJECT);
   Object* p = rinfo->target_object();
   VisitPointer(&p);
@@ skipping 5339 matching lines @@
                                             Handle<Object> new_value) {
   if (cell->value() != *new_value) {
     cell->set_value(*new_value);
     Isolate* isolate = cell->GetIsolate();
     cell->dependent_code()->DeoptimizeDependentCodeGroup(
         isolate, DependentCode::kPropertyCellChangedGroup);
   }
 }
 }  // namespace internal
 }  // namespace v8