src/hotspot/cpu/x86/stubGenerator_x86_64.cpp

@@ -1127,14 +1127,11 @@
     __ mov(r12, rsp);                               // remember rsp
     __ subptr(rsp, frame::arg_reg_save_area_bytes); // windows
     __ andptr(rsp, -16);                            // align stack as required by ABI
     BLOCK_COMMENT("call MacroAssembler::debug");
     __ call(RuntimeAddress(CAST_FROM_FN_PTR(address, MacroAssembler::debug64)));
-    __ mov(rsp, r12);                               // restore rsp
-    __ popa();                                      // pop registers (includes r12)
-    __ ret(4 * wordSize);                           // pop caller saved stuff
-
+    __ hlt();
     return start;
   }
 
   //
   // Verify that a register contains clean 32-bits positive value