src/cpu/aarch64/vm/interp_masm_aarch64.cpp

rev 12502 : 8172144: AArch64: Implement "JEP 270: Reserved Stack Areas for Critical Sections"
Reviewed-by: duke

*** 617,626 ****
--- 617,642 ----
  
    // remove activation
    // get sender esp
    ldr(esp,
        Address(rfp, frame::interpreter_frame_sender_sp_offset * wordSize));
+   if (StackReservedPages > 0) {
+     // testing if reserved zone needs to be re-enabled
+     Label no_reserved_zone_enabling;
+ 
+     ldr(rscratch1, Address(rthread, JavaThread::reserved_stack_activation_offset()));
+     cmp(esp, rscratch1);
+     br(Assembler::LS, no_reserved_zone_enabling);
+ 
+     call_VM_leaf(
+       CAST_FROM_FN_PTR(address, SharedRuntime::enable_stack_reserved_zone), rthread);
+     call_VM(noreg, CAST_FROM_FN_PTR(address,
+                    InterpreterRuntime::throw_delayed_StackOverflowError));
+     should_not_reach_here();
+ 
+     bind(no_reserved_zone_enabling);
+   }
    // remove frame anchor
    leave();
    // If we're returning to interpreted code we will shortly be
    // adjusting SP to allow some space for ESP.  If we're returning to
    // compiled code the saved sender SP was saved in sender_sp, so this