3681 andl(temp_reg, 0x1);
3682 testl(temp_reg, temp_reg);
3683 jcc(Assembler::notZero, is_flattened);
3684 }
3685
3686 void MacroAssembler::test_flat_array_klass(Register klass, Register temp_reg,
3687 Label& is_flat_array) {
3688 movl(temp_reg, Address(klass, Klass::layout_helper_offset()));
3689 sarl(temp_reg, Klass::_lh_array_tag_shift);
3690 cmpl(temp_reg, Klass::_lh_array_tag_vt_value);
3691 jcc(Assembler::equal, is_flat_array);
3692 }
3693
3694
3695 void MacroAssembler::test_flat_array_oop(Register oop, Register temp_reg,
3696 Label& is_flat_array) {
3697 load_klass(temp_reg, oop);
3698 test_flat_array_klass(temp_reg, temp_reg, is_flat_array);
3699 }
3700
3701 void MacroAssembler::test_value_is_not_buffered(Register value, Register temp_reg, Label& not_buffered) {
3702 ExternalAddress VTBuffer_top(VTBuffer::top_addr());
3703 ExternalAddress VTBuffer_end(VTBuffer::end_addr());
3704
3705 // Test below is ordered based on the relative positions of
3706 // the Java heap and the VTBuffer to execute a single test for heap-allocated values
3707
3708 if (VTBuffer::base() < Universe::heap()->base()) {
3709 lea(temp_reg, VTBuffer_end);
3710 cmpptr(value, temp_reg);
3711 jcc(Assembler::greaterEqual, not_buffered);
3712 lea(temp_reg, VTBuffer_top);
3713 cmpptr(value, temp_reg);
3714 jcc(Assembler::less, not_buffered);
3715 } else {
3716 lea(temp_reg, VTBuffer_top);
3717 cmpptr(value, temp_reg);
3718 jcc(Assembler::less, not_buffered);
3719 lea(temp_reg, VTBuffer_end);
3720 cmpptr(value, temp_reg);
3721 jcc(Assembler::greaterEqual, not_buffered);
3722 }
3723 }
3724
3725 void MacroAssembler::os_breakpoint() {
3726 // instead of directly emitting a breakpoint, call os:breakpoint for better debugability
3727 // (e.g., MSVC can't call ps() otherwise)
3728 call(RuntimeAddress(CAST_FROM_FN_PTR(address, os::breakpoint)));
3729 }
3730
3731 void MacroAssembler::unimplemented(const char* what) {
3732 const char* buf = NULL;
3733 {
3734 ResourceMark rm;
3735 stringStream ss;
3736 ss.print("unimplemented: %s", what);
3737 buf = code_string(ss.as_string());
3738 }
3739 stop(buf);
3740 }
3741
3742 #ifdef _LP64
3743 #define XSTATE_BV 0x200
3744 #endif
|
3681 andl(temp_reg, 0x1);
3682 testl(temp_reg, temp_reg);
3683 jcc(Assembler::notZero, is_flattened);
3684 }
3685
3686 void MacroAssembler::test_flat_array_klass(Register klass, Register temp_reg,
3687 Label& is_flat_array) {
3688 movl(temp_reg, Address(klass, Klass::layout_helper_offset()));
3689 sarl(temp_reg, Klass::_lh_array_tag_shift);
3690 cmpl(temp_reg, Klass::_lh_array_tag_vt_value);
3691 jcc(Assembler::equal, is_flat_array);
3692 }
3693
3694
3695 void MacroAssembler::test_flat_array_oop(Register oop, Register temp_reg,
3696 Label& is_flat_array) {
3697 load_klass(temp_reg, oop);
3698 test_flat_array_klass(temp_reg, temp_reg, is_flat_array);
3699 }
3700
3701 void MacroAssembler::os_breakpoint() {
3702 // instead of directly emitting a breakpoint, call os:breakpoint for better debugability
3703 // (e.g., MSVC can't call ps() otherwise)
3704 call(RuntimeAddress(CAST_FROM_FN_PTR(address, os::breakpoint)));
3705 }
3706
3707 void MacroAssembler::unimplemented(const char* what) {
3708 const char* buf = NULL;
3709 {
3710 ResourceMark rm;
3711 stringStream ss;
3712 ss.print("unimplemented: %s", what);
3713 buf = code_string(ss.as_string());
3714 }
3715 stop(buf);
3716 }
3717
3718 #ifdef _LP64
3719 #define XSTATE_BV 0x200
3720 #endif
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