74 Label slow;
75
76 unsigned long offset;
77 __ adrp(rcounter_addr,
78 SafepointSynchronize::safepoint_counter_addr(), offset);
79 Address safepoint_counter_addr(rcounter_addr, offset);
80 __ ldrw(rcounter, safepoint_counter_addr);
81 __ tbnz(rcounter, 0, slow);
82 __ eor(robj, c_rarg1, rcounter);
83 __ eor(robj, robj, rcounter); // obj, since
84 // robj ^ rcounter ^ rcounter == robj
85 // robj is address dependent on rcounter.
86
87 BarrierSetAssembler* bs = BarrierSet::barrier_set()->barrier_set_assembler();
88 bs->try_resolve_jobject_in_native(masm, c_rarg0, robj, rscratch1, slow);
89
90 __ lsr(roffset, c_rarg2, 2); // offset
91
92 assert(count < LIST_CAPACITY, "LIST_CAPACITY too small");
93 speculative_load_pclist[count] = __ pc(); // Used by the segfault handler
94 switch (type) {
95 case T_BOOLEAN: __ ldrb (result, Address(robj, roffset)); break;
96 case T_BYTE: __ ldrsb (result, Address(robj, roffset)); break;
97 case T_CHAR: __ ldrh (result, Address(robj, roffset)); break;
98 case T_SHORT: __ ldrsh (result, Address(robj, roffset)); break;
99 case T_FLOAT: __ ldrw (result, Address(robj, roffset)); break;
100 case T_INT: __ ldrsw (result, Address(robj, roffset)); break;
101 case T_DOUBLE:
102 case T_LONG: __ ldr (result, Address(robj, roffset)); break;
103 default: ShouldNotReachHere();
104 }
105
106 // counter_addr is address dependent on result.
107 __ eor(rcounter_addr, rcounter_addr, result);
108 __ eor(rcounter_addr, rcounter_addr, result);
109 __ ldrw(rscratch1, safepoint_counter_addr);
110 __ cmpw(rcounter, rscratch1);
111 __ br (Assembler::NE, slow);
112
113 switch (type) {
114 case T_FLOAT: __ fmovs(v0, result); break;
115 case T_DOUBLE: __ fmovd(v0, result); break;
116 default: __ mov(r0, result); break;
117 }
118 __ ret(lr);
119
120 slowcase_entry_pclist[count++] = __ pc();
121 __ bind(slow);
122 address slow_case_addr;
123 switch (type) {
124 case T_BOOLEAN: slow_case_addr = jni_GetBooleanField_addr(); break;
125 case T_BYTE: slow_case_addr = jni_GetByteField_addr(); break;
126 case T_CHAR: slow_case_addr = jni_GetCharField_addr(); break;
127 case T_SHORT: slow_case_addr = jni_GetShortField_addr(); break;
128 case T_INT: slow_case_addr = jni_GetIntField_addr(); break;
129 case T_LONG: slow_case_addr = jni_GetLongField_addr(); break;
130 case T_FLOAT: slow_case_addr = jni_GetFloatField_addr(); break;
131 case T_DOUBLE: slow_case_addr = jni_GetDoubleField_addr(); break;
132 default: ShouldNotReachHere();
133 slow_case_addr = NULL; // unreachable
134 }
135
136 {
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74 Label slow;
75
76 unsigned long offset;
77 __ adrp(rcounter_addr,
78 SafepointSynchronize::safepoint_counter_addr(), offset);
79 Address safepoint_counter_addr(rcounter_addr, offset);
80 __ ldrw(rcounter, safepoint_counter_addr);
81 __ tbnz(rcounter, 0, slow);
82 __ eor(robj, c_rarg1, rcounter);
83 __ eor(robj, robj, rcounter); // obj, since
84 // robj ^ rcounter ^ rcounter == robj
85 // robj is address dependent on rcounter.
86
87 BarrierSetAssembler* bs = BarrierSet::barrier_set()->barrier_set_assembler();
88 bs->try_resolve_jobject_in_native(masm, c_rarg0, robj, rscratch1, slow);
89
90 __ lsr(roffset, c_rarg2, 2); // offset
91
92 assert(count < LIST_CAPACITY, "LIST_CAPACITY too small");
93 speculative_load_pclist[count] = __ pc(); // Used by the segfault handler
94
95 // Ensure that field has finished loading before loading the safepoint_counter.
96 // We must not load into r0 yet. It's also c_rarg0 and would clobber the JNIEnv* pointer.
97 switch (type) {
98 case T_FLOAT:
99 case T_DOUBLE:
100 __ access_load_at(type, IN_HEAP, noreg /* tos: r0/v0 */, Address(robj, roffset), noreg, noreg);
101 __ membar(MacroAssembler::LoadLoad);
102 break;
103 default:
104 __ access_load_at(type, IN_HEAP, result, Address(robj, roffset), noreg, noreg);
105 // counter_addr is address dependent on result.
106 __ eor(rcounter_addr, rcounter_addr, result);
107 __ eor(rcounter_addr, rcounter_addr, result);
108 }
109
110 __ ldrw(rscratch1, safepoint_counter_addr);
111 __ cmpw(rcounter, rscratch1);
112 __ br (Assembler::NE, slow);
113
114 switch (type) {
115 case T_FLOAT:
116 case T_DOUBLE:
117 // Result is already in v0. Nothing to do.
118 break;
119 default:
120 // Move result over to r0.
121 __ mov(r0, result);
122 }
123 __ ret(lr);
124
125 slowcase_entry_pclist[count++] = __ pc();
126 __ bind(slow);
127 address slow_case_addr;
128 switch (type) {
129 case T_BOOLEAN: slow_case_addr = jni_GetBooleanField_addr(); break;
130 case T_BYTE: slow_case_addr = jni_GetByteField_addr(); break;
131 case T_CHAR: slow_case_addr = jni_GetCharField_addr(); break;
132 case T_SHORT: slow_case_addr = jni_GetShortField_addr(); break;
133 case T_INT: slow_case_addr = jni_GetIntField_addr(); break;
134 case T_LONG: slow_case_addr = jni_GetLongField_addr(); break;
135 case T_FLOAT: slow_case_addr = jni_GetFloatField_addr(); break;
136 case T_DOUBLE: slow_case_addr = jni_GetDoubleField_addr(); break;
137 default: ShouldNotReachHere();
138 slow_case_addr = NULL; // unreachable
139 }
140
141 {
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