16 * 2 along with this work; if not, write to the Free Software Foundation,
17 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
18 *
19 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
20 * or visit www.oracle.com if you need additional information or have any
21 * questions.
22 *
23 */
24
25 #include "precompiled.hpp"
26 #include "gc/shared/barrierSetAssembler.hpp"
27 #include "runtime/jniHandles.hpp"
28
29 #define __ masm->
30
31 void BarrierSetAssembler::load_at(MacroAssembler* masm, DecoratorSet decorators, BasicType type,
32 Register dst, Address src, Register tmp1, Register tmp_thread) {
33
34 // LR is live. It must be saved around calls.
35
36 bool on_heap = (decorators & IN_HEAP) != 0;
37 bool on_root = (decorators & IN_ROOT) != 0;
38 bool oop_not_null = (decorators & OOP_NOT_NULL) != 0;
39 switch (type) {
40 case T_OBJECT:
41 case T_ARRAY: {
42 if (on_heap) {
43 if (UseCompressedOops) {
44 __ ldrw(dst, src);
45 if (oop_not_null) {
46 __ decode_heap_oop_not_null(dst);
47 } else {
48 __ decode_heap_oop(dst);
49 }
50 } else {
51 __ ldr(dst, src);
52 }
53 } else {
54 assert(on_root, "why else?");
55 __ ldr(dst, src);
56 }
57 break;
58 }
59 case T_BOOLEAN: __ load_unsigned_byte (dst, src); break;
60 case T_BYTE: __ load_signed_byte (dst, src); break;
61 case T_CHAR: __ load_unsigned_short(dst, src); break;
62 case T_SHORT: __ load_signed_short (dst, src); break;
63 case T_INT: __ ldrw (dst, src); break;
64 case T_LONG: __ ldr (dst, src); break;
65 case T_ADDRESS: __ ldr (dst, src); break;
66 case T_FLOAT: __ ldrs (v0, src); break;
67 case T_DOUBLE: __ ldrd (v0, src); break;
68 default: Unimplemented();
69 }
70 }
71
72 void BarrierSetAssembler::store_at(MacroAssembler* masm, DecoratorSet decorators, BasicType type,
73 Address dst, Register val, Register tmp1, Register tmp2) {
74 bool on_heap = (decorators & IN_HEAP) != 0;
75 bool on_root = (decorators & IN_ROOT) != 0;
76 switch (type) {
77 case T_OBJECT:
78 case T_ARRAY: {
79 val = val == noreg ? zr : val;
80 if (on_heap) {
81 if (UseCompressedOops) {
82 assert(!dst.uses(val), "not enough registers");
83 if (val != zr) {
84 __ encode_heap_oop(val);
85 }
86 __ strw(val, dst);
87 } else {
88 __ str(val, dst);
89 }
90 } else {
91 assert(on_root, "why else?");
92 __ str(val, dst);
93 }
94 break;
95 }
96 case T_BOOLEAN:
97 __ andw(val, val, 0x1); // boolean is true if LSB is 1
98 __ strb(val, dst);
99 break;
100 case T_BYTE: __ strb(val, dst); break;
101 case T_CHAR: __ strh(val, dst); break;
102 case T_SHORT: __ strh(val, dst); break;
103 case T_INT: __ strw(val, dst); break;
104 case T_LONG: __ str (val, dst); break;
105 case T_ADDRESS: __ str (val, dst); break;
106 case T_FLOAT: __ strs(v0, dst); break;
107 case T_DOUBLE: __ strd(v0, dst); break;
108 default: Unimplemented();
109 }
110 }
111
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16 * 2 along with this work; if not, write to the Free Software Foundation,
17 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
18 *
19 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
20 * or visit www.oracle.com if you need additional information or have any
21 * questions.
22 *
23 */
24
25 #include "precompiled.hpp"
26 #include "gc/shared/barrierSetAssembler.hpp"
27 #include "runtime/jniHandles.hpp"
28
29 #define __ masm->
30
31 void BarrierSetAssembler::load_at(MacroAssembler* masm, DecoratorSet decorators, BasicType type,
32 Register dst, Address src, Register tmp1, Register tmp_thread) {
33
34 // LR is live. It must be saved around calls.
35
36 bool in_heap = (decorators & IN_HEAP) != 0;
37 bool in_native = (decorators & IN_NATIVE) != 0;
38 bool oop_not_null = (decorators & OOP_NOT_NULL) != 0;
39 switch (type) {
40 case T_OBJECT:
41 case T_ARRAY: {
42 if (in_heap) {
43 if (UseCompressedOops) {
44 __ ldrw(dst, src);
45 if (oop_not_null) {
46 __ decode_heap_oop_not_null(dst);
47 } else {
48 __ decode_heap_oop(dst);
49 }
50 } else {
51 __ ldr(dst, src);
52 }
53 } else {
54 assert(in_native, "why else?");
55 __ ldr(dst, src);
56 }
57 break;
58 }
59 case T_BOOLEAN: __ load_unsigned_byte (dst, src); break;
60 case T_BYTE: __ load_signed_byte (dst, src); break;
61 case T_CHAR: __ load_unsigned_short(dst, src); break;
62 case T_SHORT: __ load_signed_short (dst, src); break;
63 case T_INT: __ ldrw (dst, src); break;
64 case T_LONG: __ ldr (dst, src); break;
65 case T_ADDRESS: __ ldr (dst, src); break;
66 case T_FLOAT: __ ldrs (v0, src); break;
67 case T_DOUBLE: __ ldrd (v0, src); break;
68 default: Unimplemented();
69 }
70 }
71
72 void BarrierSetAssembler::store_at(MacroAssembler* masm, DecoratorSet decorators, BasicType type,
73 Address dst, Register val, Register tmp1, Register tmp2) {
74 bool in_heap = (decorators & IN_HEAP) != 0;
75 bool in_native = (decorators & IN_NATIVE) != 0;
76 switch (type) {
77 case T_OBJECT:
78 case T_ARRAY: {
79 val = val == noreg ? zr : val;
80 if (in_heap) {
81 if (UseCompressedOops) {
82 assert(!dst.uses(val), "not enough registers");
83 if (val != zr) {
84 __ encode_heap_oop(val);
85 }
86 __ strw(val, dst);
87 } else {
88 __ str(val, dst);
89 }
90 } else {
91 assert(in_native, "why else?");
92 __ str(val, dst);
93 }
94 break;
95 }
96 case T_BOOLEAN:
97 __ andw(val, val, 0x1); // boolean is true if LSB is 1
98 __ strb(val, dst);
99 break;
100 case T_BYTE: __ strb(val, dst); break;
101 case T_CHAR: __ strh(val, dst); break;
102 case T_SHORT: __ strh(val, dst); break;
103 case T_INT: __ strw(val, dst); break;
104 case T_LONG: __ str (val, dst); break;
105 case T_ADDRESS: __ str (val, dst); break;
106 case T_FLOAT: __ strs(v0, dst); break;
107 case T_DOUBLE: __ strd(v0, dst); break;
108 default: Unimplemented();
109 }
110 }
111
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