877
878 void InterpreterMacroAssembler::index_check_without_pop(Register array, Register index, int index_shift, Register tmp, Register res) {
879 assert_not_delayed();
880
881 verify_oop(array);
882 // sign extend since tos (index) can be a 32bit value
883 sra(index, G0, index);
884
885 // check array
886 Label ptr_ok;
887 tst(array);
888 throw_if_not_1_x( notZero, ptr_ok );
889 delayed()->ld( array, arrayOopDesc::length_offset_in_bytes(), tmp ); // check index
890 throw_if_not_2( Interpreter::_throw_NullPointerException_entry, G3_scratch, ptr_ok);
891
892 Label index_ok;
893 cmp(index, tmp);
894 throw_if_not_1_icc( lessUnsigned, index_ok );
895 if (index_shift > 0) delayed()->sll(index, index_shift, index);
896 else delayed()->add(array, index, res); // addr - const offset in index
897 // convention: move aberrant index into G3_scratch for exception message
898 mov(index, G3_scratch);
899 throw_if_not_2( Interpreter::_throw_ArrayIndexOutOfBoundsException_entry, G4_scratch, index_ok);
900
901 // add offset if didn't do it in delay slot
902 if (index_shift > 0) add(array, index, res); // addr - const offset in index
903 }
904
905
906 void InterpreterMacroAssembler::index_check(Register array, Register index, int index_shift, Register tmp, Register res) {
907 assert_not_delayed();
908
909 // pop array
910 pop_ptr(array);
911
912 // check array
913 index_check_without_pop(array, index, index_shift, tmp, res);
914 }
915
916
917 void InterpreterMacroAssembler::get_const(Register Rdst) {
918 ld_ptr(Lmethod, in_bytes(Method::const_offset()), Rdst);
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877
878 void InterpreterMacroAssembler::index_check_without_pop(Register array, Register index, int index_shift, Register tmp, Register res) {
879 assert_not_delayed();
880
881 verify_oop(array);
882 // sign extend since tos (index) can be a 32bit value
883 sra(index, G0, index);
884
885 // check array
886 Label ptr_ok;
887 tst(array);
888 throw_if_not_1_x( notZero, ptr_ok );
889 delayed()->ld( array, arrayOopDesc::length_offset_in_bytes(), tmp ); // check index
890 throw_if_not_2( Interpreter::_throw_NullPointerException_entry, G3_scratch, ptr_ok);
891
892 Label index_ok;
893 cmp(index, tmp);
894 throw_if_not_1_icc( lessUnsigned, index_ok );
895 if (index_shift > 0) delayed()->sll(index, index_shift, index);
896 else delayed()->add(array, index, res); // addr - const offset in index
897 // Pass the array to create more detailed exceptions.
898 // convention: move aberrant index into G3_scratch for exception message
899 mov(index, Otos_i);
900 mov(array, G3_scratch);
901 throw_if_not_2( Interpreter::_throw_ArrayIndexOutOfBoundsException_entry, G4_scratch, index_ok);
902
903 // add offset if didn't do it in delay slot
904 if (index_shift > 0) add(array, index, res); // addr - const offset in index
905 }
906
907
908 void InterpreterMacroAssembler::index_check(Register array, Register index, int index_shift, Register tmp, Register res) {
909 assert_not_delayed();
910
911 // pop array
912 pop_ptr(array);
913
914 // check array
915 index_check_without_pop(array, index, index_shift, tmp, res);
916 }
917
918
919 void InterpreterMacroAssembler::get_const(Register Rdst) {
920 ld_ptr(Lmethod, in_bytes(Method::const_offset()), Rdst);
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