2761
2762 Register Roop = reg_to_register_object($oop$$reg);
2763 Register Rbox = reg_to_register_object($box$$reg);
2764 Register Rscratch = reg_to_register_object($scratch$$reg);
2765 Register Rmark = reg_to_register_object($scratch2$$reg);
2766
2767 assert(Roop != Rscratch, "");
2768 assert(Roop != Rmark, "");
2769 assert(Rbox != Rscratch, "");
2770 assert(Rbox != Rmark, "");
2771
2772 __ compiler_unlock_object(Roop, Rmark, Rbox, Rscratch, UseBiasedLocking && !UseOptoBiasInlining);
2773 %}
2774
2775 enc_class enc_cas( iRegP mem, iRegP old, iRegP new ) %{
2776 MacroAssembler _masm(&cbuf);
2777 Register Rmem = reg_to_register_object($mem$$reg);
2778 Register Rold = reg_to_register_object($old$$reg);
2779 Register Rnew = reg_to_register_object($new$$reg);
2780
2781 // casx_under_lock picks 1 of 3 encodings:
2782 // For 32-bit pointers you get a 32-bit CAS
2783 // For 64-bit pointers you get a 64-bit CASX
2784 __ casn(Rmem, Rold, Rnew); // Swap(*Rmem,Rnew) if *Rmem == Rold
2785 __ cmp( Rold, Rnew );
2786 %}
2787
2788 enc_class enc_casx( iRegP mem, iRegL old, iRegL new) %{
2789 Register Rmem = reg_to_register_object($mem$$reg);
2790 Register Rold = reg_to_register_object($old$$reg);
2791 Register Rnew = reg_to_register_object($new$$reg);
2792
2793 MacroAssembler _masm(&cbuf);
2794 __ mov(Rnew, O7);
2795 __ casx(Rmem, Rold, O7);
2796 __ cmp( Rold, O7 );
2797 %}
2798
2799 // raw int cas, used for compareAndSwap
2800 enc_class enc_casi( iRegP mem, iRegL old, iRegL new) %{
2801 Register Rmem = reg_to_register_object($mem$$reg);
2802 Register Rold = reg_to_register_object($old$$reg);
2803 Register Rnew = reg_to_register_object($new$$reg);
2804
|
2761
2762 Register Roop = reg_to_register_object($oop$$reg);
2763 Register Rbox = reg_to_register_object($box$$reg);
2764 Register Rscratch = reg_to_register_object($scratch$$reg);
2765 Register Rmark = reg_to_register_object($scratch2$$reg);
2766
2767 assert(Roop != Rscratch, "");
2768 assert(Roop != Rmark, "");
2769 assert(Rbox != Rscratch, "");
2770 assert(Rbox != Rmark, "");
2771
2772 __ compiler_unlock_object(Roop, Rmark, Rbox, Rscratch, UseBiasedLocking && !UseOptoBiasInlining);
2773 %}
2774
2775 enc_class enc_cas( iRegP mem, iRegP old, iRegP new ) %{
2776 MacroAssembler _masm(&cbuf);
2777 Register Rmem = reg_to_register_object($mem$$reg);
2778 Register Rold = reg_to_register_object($old$$reg);
2779 Register Rnew = reg_to_register_object($new$$reg);
2780
2781 __ cas_ptr(Rmem, Rold, Rnew); // Swap(*Rmem,Rnew) if *Rmem == Rold
2782 __ cmp( Rold, Rnew );
2783 %}
2784
2785 enc_class enc_casx( iRegP mem, iRegL old, iRegL new) %{
2786 Register Rmem = reg_to_register_object($mem$$reg);
2787 Register Rold = reg_to_register_object($old$$reg);
2788 Register Rnew = reg_to_register_object($new$$reg);
2789
2790 MacroAssembler _masm(&cbuf);
2791 __ mov(Rnew, O7);
2792 __ casx(Rmem, Rold, O7);
2793 __ cmp( Rold, O7 );
2794 %}
2795
2796 // raw int cas, used for compareAndSwap
2797 enc_class enc_casi( iRegP mem, iRegL old, iRegL new) %{
2798 Register Rmem = reg_to_register_object($mem$$reg);
2799 Register Rold = reg_to_register_object($old$$reg);
2800 Register Rnew = reg_to_register_object($new$$reg);
2801
|