21 * or visit www.oracle.com if you need additional information or have any
22 * questions.
23 *
24 */
25
26 #include "precompiled.hpp"
27 #include "asm/macroAssembler.inline.hpp"
28 #include "gc/shared/barrierSetAssembler.hpp"
29 #include "interpreter/interp_masm.hpp"
30
31 #define __ masm->
32
33 void BarrierSetAssembler::arraycopy_epilogue(MacroAssembler* masm, DecoratorSet decorators, BasicType type,
34 Register dst, Register count, bool do_return) {
35 if (do_return) { __ z_br(Z_R14); }
36 }
37
38 void BarrierSetAssembler::load_at(MacroAssembler* masm, DecoratorSet decorators, BasicType type,
39 const Address& addr, Register dst, Register tmp1, Register tmp2, Label *L_handle_null) {
40 bool on_heap = (decorators & IN_HEAP) != 0;
41 bool on_root = (decorators & IN_ROOT) != 0;
42 bool not_null = (decorators & OOP_NOT_NULL) != 0;
43 assert(on_heap || on_root, "where?");
44
45 switch (type) {
46 case T_ARRAY:
47 case T_OBJECT: {
48 if (UseCompressedOops && on_heap) {
49 __ z_llgf(dst, addr);
50 if (L_handle_null != NULL) { // Label provided.
51 __ compareU32_and_branch(dst, (intptr_t)0, Assembler::bcondEqual, *L_handle_null);
52 __ oop_decoder(dst, dst, false);
53 } else {
54 __ oop_decoder(dst, dst, !not_null);
55 }
56 } else {
57 __ z_lg(dst, addr);
58 if (L_handle_null != NULL) {
59 __ compareU64_and_branch(dst, (intptr_t)0, Assembler::bcondEqual, *L_handle_null);
60 }
61 }
62 break;
63 }
64 default: Unimplemented();
65 }
66 }
67
68 void BarrierSetAssembler::store_at(MacroAssembler* masm, DecoratorSet decorators, BasicType type,
69 const Address& addr, Register val, Register tmp1, Register tmp2, Register tmp3) {
70 bool on_heap = (decorators & IN_HEAP) != 0;
71 bool on_root = (decorators & IN_ROOT) != 0;
72 bool not_null = (decorators & OOP_NOT_NULL) != 0;
73 assert(on_heap || on_root, "where?");
74 assert_different_registers(val, tmp1, tmp2);
75
76 switch (type) {
77 case T_ARRAY:
78 case T_OBJECT: {
79 if (UseCompressedOops && on_heap) {
80 if (val == noreg) {
81 __ clear_mem(addr, 4);
82 } else if (Universe::narrow_oop_mode() == Universe::UnscaledNarrowOop) {
83 __ z_st(val, addr);
84 } else {
85 Register tmp = (tmp1 != Z_R1) ? tmp1 : tmp2; // Avoid tmp == Z_R1 (see oop_encoder).
86 __ oop_encoder(tmp, val, !not_null);
87 __ z_st(tmp, addr);
88 }
89 } else {
90 if (val == noreg) {
91 __ clear_mem(addr, 8);
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21 * or visit www.oracle.com if you need additional information or have any
22 * questions.
23 *
24 */
25
26 #include "precompiled.hpp"
27 #include "asm/macroAssembler.inline.hpp"
28 #include "gc/shared/barrierSetAssembler.hpp"
29 #include "interpreter/interp_masm.hpp"
30
31 #define __ masm->
32
33 void BarrierSetAssembler::arraycopy_epilogue(MacroAssembler* masm, DecoratorSet decorators, BasicType type,
34 Register dst, Register count, bool do_return) {
35 if (do_return) { __ z_br(Z_R14); }
36 }
37
38 void BarrierSetAssembler::load_at(MacroAssembler* masm, DecoratorSet decorators, BasicType type,
39 const Address& addr, Register dst, Register tmp1, Register tmp2, Label *L_handle_null) {
40 bool on_heap = (decorators & IN_HEAP) != 0;
41 bool on_root = (decorators & IN_NATIVE) != 0;
42 bool not_null = (decorators & OOP_NOT_NULL) != 0;
43 assert(on_heap || on_root, "where?");
44
45 switch (type) {
46 case T_ARRAY:
47 case T_OBJECT: {
48 if (UseCompressedOops && on_heap) {
49 __ z_llgf(dst, addr);
50 if (L_handle_null != NULL) { // Label provided.
51 __ compareU32_and_branch(dst, (intptr_t)0, Assembler::bcondEqual, *L_handle_null);
52 __ oop_decoder(dst, dst, false);
53 } else {
54 __ oop_decoder(dst, dst, !not_null);
55 }
56 } else {
57 __ z_lg(dst, addr);
58 if (L_handle_null != NULL) {
59 __ compareU64_and_branch(dst, (intptr_t)0, Assembler::bcondEqual, *L_handle_null);
60 }
61 }
62 break;
63 }
64 default: Unimplemented();
65 }
66 }
67
68 void BarrierSetAssembler::store_at(MacroAssembler* masm, DecoratorSet decorators, BasicType type,
69 const Address& addr, Register val, Register tmp1, Register tmp2, Register tmp3) {
70 bool on_heap = (decorators & IN_HEAP) != 0;
71 bool on_root = (decorators & IN_NATIVE) != 0;
72 bool not_null = (decorators & OOP_NOT_NULL) != 0;
73 assert(on_heap || on_root, "where?");
74 assert_different_registers(val, tmp1, tmp2);
75
76 switch (type) {
77 case T_ARRAY:
78 case T_OBJECT: {
79 if (UseCompressedOops && on_heap) {
80 if (val == noreg) {
81 __ clear_mem(addr, 4);
82 } else if (Universe::narrow_oop_mode() == Universe::UnscaledNarrowOop) {
83 __ z_st(val, addr);
84 } else {
85 Register tmp = (tmp1 != Z_R1) ? tmp1 : tmp2; // Avoid tmp == Z_R1 (see oop_encoder).
86 __ oop_encoder(tmp, val, !not_null);
87 __ z_st(tmp, addr);
88 }
89 } else {
90 if (val == noreg) {
91 __ clear_mem(addr, 8);
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