72 __ add(start, start, scratch);
73 __ bind(L_loop);
74 __ strb(zr, Address(start, count));
75 __ subs(count, count, 1);
76 __ br(Assembler::GE, L_loop);
77 __ bind(L_done);
78 }
79
80 void CardTableBarrierSetAssembler::oop_store_at(MacroAssembler* masm, DecoratorSet decorators, BasicType type,
81 Address dst, Register val, Register tmp1, Register tmp2, Register tmp3) {
82 bool in_heap = (decorators & IN_HEAP) != 0;
83 bool is_array = (decorators & IS_ARRAY) != 0;
84 bool on_anonymous = (decorators & ON_UNKNOWN_OOP_REF) != 0;
85 bool precise = is_array || on_anonymous;
86
87 bool needs_post_barrier = val != noreg && in_heap;
88 BarrierSetAssembler::store_at(masm, decorators, type, dst, val, noreg, noreg, noreg);
89 if (needs_post_barrier) {
90 // flatten object address if needed
91 if (!precise || (dst.index() == noreg && dst.offset() == 0)) {
92 store_check(masm, dst.base(), dst);
93 } else {
94 __ lea(tmp3, dst);
95 store_check(masm, tmp3, dst);
96 }
97 }
98 }
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72 __ add(start, start, scratch);
73 __ bind(L_loop);
74 __ strb(zr, Address(start, count));
75 __ subs(count, count, 1);
76 __ br(Assembler::GE, L_loop);
77 __ bind(L_done);
78 }
79
80 void CardTableBarrierSetAssembler::oop_store_at(MacroAssembler* masm, DecoratorSet decorators, BasicType type,
81 Address dst, Register val, Register tmp1, Register tmp2, Register tmp3) {
82 bool in_heap = (decorators & IN_HEAP) != 0;
83 bool is_array = (decorators & IS_ARRAY) != 0;
84 bool on_anonymous = (decorators & ON_UNKNOWN_OOP_REF) != 0;
85 bool precise = is_array || on_anonymous;
86
87 bool needs_post_barrier = val != noreg && in_heap;
88 BarrierSetAssembler::store_at(masm, decorators, type, dst, val, noreg, noreg, noreg);
89 if (needs_post_barrier) {
90 // flatten object address if needed
91 if (!precise || (dst.index() == noreg && dst.offset() == 0)) {
92 if (tmp3 != noreg) {
93 // Called by MacroAssembler::pack_inline_helper. We cannot corrupt the dst.base() register
94 __ mov(tmp3, dst.base());
95 store_check(masm, tmp3, dst);
96 } else {
97 // It's OK to corrupt the dst.base() register.
98 store_check(masm, dst.base(), dst);
99 }
100
101 } else {
102 __ lea(tmp3, dst);
103 store_check(masm, tmp3, dst);
104 }
105 }
106
107 }
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