src/share/vm/runtime/deoptimization.cpp

*** 546,555 ****
--- 546,572 ----
    // incremented at the beginning of fetch_unroll_info() and (in C2) at
    // the beginning of uncommon_trap().
    thread->dec_in_deopt_handler();
  }
  
+ // Moved from cpu directories because none of the cpus has callee save values.
+ // If a cpu implements callee save values, move this to deoptimization_<cpu>.cpp.
+ void Deoptimization::unwind_callee_save_values(frame* f, vframeArray* vframe_array) {
+ 
+   // This code is sort of the equivalent of C2IAdapter::setup_stack_frame back in
+   // the days we had adapter frames. When we deoptimize a situation where a
+   // compiled caller calls a compiled caller will have registers it expects
+   // to survive the call to the callee. If we deoptimize the callee the only
+   // way we can restore these registers is to have the oldest interpreter
+   // frame that we create restore these values. That is what this routine
+   // will accomplish.
+ 
+   // At the moment we have modified c2 to not have any callee save registers
+   // so this problem does not exist and this routine is just a place holder.
+ 
+   assert(f->is_interpreted_frame(), "must be interpreted");
+ }
  
  // Return BasicType of value being returned
  JRT_LEAF(BasicType, Deoptimization::unpack_frames(JavaThread* thread, int exec_mode))
  
    // We are already active int he special DeoptResourceMark any ResourceObj's we