src/cpu/x86/vm/frame_x86.cpp

rev 5697 : 8028412: AsyncGetCallTrace() is broken on x86 in JDK7u40
Reviewed-by:

@@ -92,17 +92,10 @@
     // First check if frame is complete and tester is reliable
     // Unfortunately we can only check frame complete for runtime stubs and nmethod
     // other generic buffer blobs are more problematic so we just assume they are
     // ok. adapter blobs never have a frame complete and are never ok.
 
-    // check for a valid frame_size, otherwise we are unlikely to get a valid sender_pc
-
-    if (!Interpreter::contains(_pc) && _cb->frame_size() <= 0) {
-      //assert(0, "Invalid frame_size");
-      return false;
-    }
-
     if (!_cb->is_frame_complete_at(_pc)) {
       if (_cb->is_nmethod() || _cb->is_adapter_blob() || _cb->is_runtime_stub()) {
         return false;
       }
     }

@@ -142,10 +135,15 @@
 
     } else {
       // must be some sort of compiled/runtime frame
       // fp does not have to be safe (although it could be check for c1?)
 
+      // check for a valid frame_size, otherwise we are unlikely to get a valid sender_pc
+      if (_cb->frame_size() <= 0) {
+        return false;
+      }
+
       sender_sp = _unextended_sp + _cb->frame_size();
       // On Intel the return_address is always the word on the stack
       sender_pc = (address) *(sender_sp-1);
     }