[builtins] New frame type for exits to C++ builtins

src/frames-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_FRAMES_INL_H_
 #define V8_FRAMES_INL_H_
 
 #include "src/frames.h"
 #include "src/isolate.h"
 #include "src/objects-inl.h"
@@ skipping 80 matching lines @@
 inline EntryConstructFrame::EntryConstructFrame(
     StackFrameIteratorBase* iterator)
     : EntryFrame(iterator) {
 }
 
 
 inline ExitFrame::ExitFrame(StackFrameIteratorBase* iterator)
     : StackFrame(iterator) {
 }
 
+inline BuiltinExitFrame::BuiltinExitFrame(StackFrameIteratorBase* iterator)
+    : ExitFrame(iterator) {}
+
+inline Object* BuiltinExitFrame::function_slot_object() const {
+  return Memory::Object_at(fp() + BuiltinExitFrameConstants::kTargetOffset);
+}
 
 inline StandardFrame::StandardFrame(StackFrameIteratorBase* iterator)
     : StackFrame(iterator) {
 }
 
 
 inline Object* StandardFrame::GetExpression(int index) const {
   return Memory::Object_at(GetExpressionAddress(index));
 }
 
@@ skipping 188 matching lines @@
   return static_cast<JavaScriptFrame*>(frame());
 }
 
 WasmFrame* StackTraceFrameIterator::wasm_frame() const {
   DCHECK(is_wasm());
   return static_cast<WasmFrame*>(frame());
 }
 
 inline StackFrame* SafeStackFrameIterator::frame() const {
   DCHECK(!done());
-  DCHECK(frame_->is_java_script() || frame_->is_exit());
+  DCHECK(frame_->is_java_script() || frame_->is_exit() ||
+         frame_->is_builtin_exit());
   return frame_;
 }
 
 
 }  // namespace internal
 }  // namespace v8
 
 #endif  // V8_FRAMES_INL_H_