Store frame pointers

src/runtime.cc

Index: src/runtime.cc
diff --git a/src/runtime.cc b/src/runtime.cc
index 77c7bb99f78771e92432a40921cc0dc8b7bcc7f6..eb1f18de7dad9ad2b08b95475284de2af96cfa38 100644
--- a/src/runtime.cc
+++ b/src/runtime.cc
@@ -11226,9 +11226,10 @@ static const int kFrameDetailsLocalCountIndex = 4;
 static const int kFrameDetailsSourcePositionIndex = 5;
 static const int kFrameDetailsConstructCallIndex = 6;
 static const int kFrameDetailsAtReturnIndex = 7;
-static const int kFrameDetailsFlagsIndex = 8;
-static const int kFrameDetailsFirstDynamicIndex = 9;
-
+static const int kFrameDetailsFramePointerHighIndex = 8;
+static const int kFrameDetailsFramePointerLowIndex = 9;
+static const int kFrameDetailsFlagsIndex = 10;
+static const int kFrameDetailsFirstDynamicIndex = 11;
 
 static SaveContext* FindSavedContextForFrame(Isolate* isolate,
                                              JavaScriptFrame* frame) {
@@ -11271,7 +11272,9 @@ static int FindIndexedNonNativeFrame(JavaScriptFrameIterator* it, int index) {
 // 5: Source position
 // 6: Constructor call
 // 7: Is at return
-// 8: Flags
+// 8: Frame pointer high
+// 9: Frame pointer low
+// 10: Flags
 // Arguments name, value
 // Locals name, value
 // Return value if any
@@ -11448,6 +11451,20 @@ RUNTIME_FUNCTION(Runtime_GetFrameDetails) {
   // Add the at return information.
   details->set(kFrameDetailsAtReturnIndex, heap->ToBoolean(at_return));
 
+  uintptr_t frame_pointer =
+      reinterpret_cast<uintptr_t>(it.frame()->UnpaddedFP());
+
+#ifdef V8_HOST_ARCH_64_BIT
+  Handle<Object> frame_pointer_high = isolate->factory()->NewNumberFromUint(
+          static_cast<uint32_t>(frame_pointer >> 32));
+  details->set(kFrameDetailsFramePointerHighIndex, *frame_pointer_high);
+#else
+  details->set(kFrameDetailsFramePointerHighIndex, Smi::FromInt(0));
+#endif
+  Handle<Object> frame_pointer_low = isolate->factory()->NewNumberFromUint(
+          static_cast<uint32_t>(frame_pointer & 0xffffffff));
+  details->set(kFrameDetailsFramePointerLowIndex, *frame_pointer_low);
+
   // Add flags to indicate information on whether this frame is
   //   bit 0: invoked in the debugger context.
   //   bit 1: optimized frame.