--- a/hotspot/src/share/vm/runtime/deoptimization.cpp Sat Dec 05 05:15:35 2015 -0500
+++ b/hotspot/src/share/vm/runtime/deoptimization.cpp Sat Dec 05 10:40:22 2015 -0500
@@ -571,6 +571,23 @@
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))