src/hotspot/cpu/aarch64/templateInterpreterGenerator_aarch64.cpp

@@ -610,10 +610,45 @@
    __ membar(Assembler::AnyAny);
    __ dispatch_via(vtos, Interpreter::_normal_table.table_for(vtos));
    return entry;
  }
  
+ address TemplateInterpreterGenerator::generate_cont_preempt_rerun_interpreter_adapter() {
+   if (!Continuations::enabled()) return nullptr;
+   address start = __ pc();
+ 
+   // Restore rfp first since we need it to restore rest of registers
+   __ leave();
+ 
+   // Restore constant pool cache
+   __ ldr(rcpool, Address(rfp, frame::interpreter_frame_cache_offset * wordSize));
+ 
+   // Restore Java expression stack pointer
+   __ ldr(rscratch1, Address(rfp, frame::interpreter_frame_last_sp_offset * wordSize));
+   __ lea(esp, Address(rfp, rscratch1, Address::lsl(Interpreter::logStackElementSize)));
+   // and NULL it as marker that esp is now tos until next java call
+   __ str(zr, Address(rfp, frame::interpreter_frame_last_sp_offset * wordSize));
+ 
+   // Restore machine SP
+   __ ldr(rscratch1, Address(rfp, frame::interpreter_frame_extended_sp_offset * wordSize));
+   __ lea(sp, Address(rfp, rscratch1, Address::lsl(LogBytesPerWord)));
+ 
+   // Prepare for adjustment on return to call_VM_leaf_base()
+   __ ldr(rmethod, Address(rfp, frame::interpreter_frame_method_offset * wordSize));
+   __ stp(rscratch1, rmethod, Address(__ pre(sp, -2 * wordSize)));
+ 
+   // Restore dispatch
+   uint64_t offset;
+   __ adrp(rdispatch, ExternalAddress((address)Interpreter::dispatch_table()), offset);
+   __ add(rdispatch, rdispatch, offset);
+ 
+   __ ret(lr);
+ 
+   return start;
+ }
+ 
+ 
  // Helpers for commoning out cases in the various type of method entries.
  //
  
  
  // increment invocation count & check for overflow