src/hotspot/cpu/x86/interp_masm_x86.cpp

rev 47415 : Add Thread Local handshakes and thread local polling

*** 33,42 ****
--- 33,43 ----
  #include "oops/method.hpp"
  #include "prims/jvmtiExport.hpp"
  #include "prims/jvmtiThreadState.hpp"
  #include "runtime/basicLock.hpp"
  #include "runtime/biasedLocking.hpp"
+ #include "runtime/safepointMechanism.hpp"
  #include "runtime/sharedRuntime.hpp"
  #include "runtime/thread.inline.hpp"
  
  // Implementation of InterpreterMacroAssembler
  
*** 825,836 ****
--- 826,853 ----
    }
    if (verifyoop) {
      verify_oop(rax, state);
    }
  #ifdef _LP64
+ 
+   Label no_safepoint, dispatch;
+   address* const safepoint_table = Interpreter::safept_table(state);
+   if (SafepointMechanism::uses_thread_local_poll() && table != safepoint_table) {
+     NOT_PRODUCT(block_comment("Thread-local Safepoint poll"));
+ 
+     testb(Address(r15_thread, Thread::polling_page_offset()), SafepointMechanism::poll_bit());
+ 
+     jccb(Assembler::zero, no_safepoint);
+     lea(rscratch1, ExternalAddress((address)safepoint_table));
+     jmpb(dispatch);
+   }
+ 
+   bind(no_safepoint);
    lea(rscratch1, ExternalAddress((address)table));
+   bind(dispatch);
    jmp(Address(rscratch1, rbx, Address::times_8));
+ 
  #else
    Address index(noreg, rbx, Address::times_ptr);
    ExternalAddress tbl((address)table);
    ArrayAddress dispatch(tbl, index);
    jump(dispatch);