Store frame pointers

test/cctest/test-debug.cc

Index: test/cctest/test-debug.cc
diff --git a/test/cctest/test-debug.cc b/test/cctest/test-debug.cc
index 6375a6c47fe308eae4c9fbe5fd3bc857e4b55d0f..8782bca29000627bc8baf66509db16ae80bf6eda 100644
--- a/test/cctest/test-debug.cc
+++ b/test/cctest/test-debug.cc
@@ -7189,6 +7189,8 @@ static void DebugBreakInlineListener(
   int frame_count = result->Int32Value();
   CHECK_EQ(expected_frame_count, frame_count);
 
+  uint32_t last_frame_pointer_high;
+  uint32_t last_frame_pointer_low;
   for (int i = 0; i < frame_count; i++) {
     // The 5. element in the returned array of GetFrameDetails contains the
     // source position of that frame.
@@ -7196,6 +7198,24 @@ static void DebugBreakInlineListener(
     v8::Local<v8::Value> result = CompileRun(script);
     CHECK_EQ(expected_line_number[i],
              i::Script::GetLineNumber(source_script, result->Int32Value()));
+
+    // The 8. element in the returned array of GetFrameDetails contains the
+    // high address of the frame pointer.
+    SNPrintF(script_vector, "%%GetFrameDetails(%d, %d)[8]", break_id, i);
+    uint32_t frame_pointer_high = CompileRun(script)->Uint32Value();
+
+    // The 9. element in the returned array of GetFrameDetails contains the
+    // low address of the frame pointer.
+    SNPrintF(script_vector, "%%GetFrameDetails(%d, %d)[9]", break_id, i);
+    uint32_t frame_pointer_low = CompileRun(script)->Uint32Value();
+
+    if (i > 0) {
+      // We expect the stack to grow from high to low addresses.
+      CHECK(last_frame_pointer_high < frame_pointer_high ||
+            last_frame_pointer_low <= frame_pointer_low);
+    }
+    last_frame_pointer_high = frame_pointer_high;
+    last_frame_pointer_low = frame_pointer_low;
   }
   v8::Debug::SetDebugEventListener(NULL);
   v8::V8::TerminateExecution(CcTest::isolate());