62
63 #ifndef PRODUCT
64 if (CountCompiledCalls) {
65 __ load_const(R11_scratch1, SharedRuntime::nof_megamorphic_calls_addr());
66 __ lwz(R12_scratch2, 0, R11_scratch1);
67 __ addi(R12_scratch2, R12_scratch2, 1);
68 __ stw(R12_scratch2, 0, R11_scratch1);
69 }
70 #endif
71
72 assert(VtableStub::receiver_location() == R3_ARG1->as_VMReg(), "receiver expected in R3_ARG1");
73
74 // Get receiver klass.
75 const Register rcvr_klass = R11_scratch1;
76
77 // We might implicit NULL fault here.
78 address npe_addr = __ pc(); // npe = null pointer exception
79 __ load_klass_with_trap_null_check(rcvr_klass, R3);
80
81 // Set method (in case of interpreted method), and destination address.
82 int entry_offset = InstanceKlass::vtable_start_offset() + vtable_index*vtableEntry::size();
83
84 #ifndef PRODUCT
85 if (DebugVtables) {
86 Label L;
87 // Check offset vs vtable length.
88 const Register vtable_len = R12_scratch2;
89 __ lwz(vtable_len, InstanceKlass::vtable_length_offset()*wordSize, rcvr_klass);
90 __ cmpwi(CCR0, vtable_len, vtable_index*vtableEntry::size());
91 __ bge(CCR0, L);
92 __ li(R12_scratch2, vtable_index);
93 __ call_VM(noreg, CAST_FROM_FN_PTR(address, bad_compiled_vtable_index), R3_ARG1, R12_scratch2, false);
94 __ bind(L);
95 }
96 #endif
97
98 int v_off = entry_offset*wordSize + vtableEntry::method_offset_in_bytes();
99
100 __ ld(R19_method, v_off, rcvr_klass);
101
102 #ifndef PRODUCT
103 if (DebugVtables) {
104 Label L;
105 __ cmpdi(CCR0, R19_method, 0);
106 __ bne(CCR0, L);
107 __ stop("Vtable entry is ZERO", 102);
108 __ bind(L);
109 }
110 #endif
111
112 // If the vtable entry is null, the method is abstract.
113 address ame_addr = __ pc(); // ame = abstract method error
114
115 __ load_with_trap_null_check(R12_scratch2, in_bytes(Method::from_compiled_offset()), R19_method);
116 __ mtctr(R12_scratch2);
117 __ bctr();
118 masm->flush();
144
145 assert(VtableStub::receiver_location() == R3_ARG1->as_VMReg(), "receiver expected in R3_ARG1");
146
147 // Entry arguments:
148 // R19_method: Interface
149 // R3_ARG1: Receiver
150 //
151
152 const Register rcvr_klass = R11_scratch1;
153 const Register vtable_len = R12_scratch2;
154 const Register itable_entry_addr = R21_tmp1;
155 const Register itable_interface = R22_tmp2;
156
157 // Get receiver klass.
158
159 // We might implicit NULL fault here.
160 address npe_addr = __ pc(); // npe = null pointer exception
161 __ load_klass_with_trap_null_check(rcvr_klass, R3_ARG1);
162
163 BLOCK_COMMENT("Load start of itable entries into itable_entry.");
164 __ lwz(vtable_len, InstanceKlass::vtable_length_offset() * wordSize, rcvr_klass);
165 __ slwi(vtable_len, vtable_len, exact_log2(vtableEntry::size() * wordSize));
166 __ add(itable_entry_addr, vtable_len, rcvr_klass);
167
168 // Loop over all itable entries until desired interfaceOop(Rinterface) found.
169 BLOCK_COMMENT("Increment itable_entry_addr in loop.");
170 const int vtable_base_offset = InstanceKlass::vtable_start_offset() * wordSize;
171 __ addi(itable_entry_addr, itable_entry_addr, vtable_base_offset + itableOffsetEntry::interface_offset_in_bytes());
172
173 const int itable_offset_search_inc = itableOffsetEntry::size() * wordSize;
174 Label search;
175 __ bind(search);
176 __ ld(itable_interface, 0, itable_entry_addr);
177
178 // Handle IncompatibleClassChangeError in itable stubs.
179 // If the entry is NULL then we've reached the end of the table
180 // without finding the expected interface, so throw an exception.
181 BLOCK_COMMENT("Handle IncompatibleClassChangeError in itable stubs.");
182 Label throw_icce;
183 __ cmpdi(CCR1, itable_interface, 0);
184 __ cmpd(CCR0, itable_interface, R19_method);
185 __ addi(itable_entry_addr, itable_entry_addr, itable_offset_search_inc);
186 __ beq(CCR1, throw_icce);
187 __ bne(CCR0, search);
188
189 // Entry found and itable_entry_addr points to it, get offset of vtable for interface.
190
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62
63 #ifndef PRODUCT
64 if (CountCompiledCalls) {
65 __ load_const(R11_scratch1, SharedRuntime::nof_megamorphic_calls_addr());
66 __ lwz(R12_scratch2, 0, R11_scratch1);
67 __ addi(R12_scratch2, R12_scratch2, 1);
68 __ stw(R12_scratch2, 0, R11_scratch1);
69 }
70 #endif
71
72 assert(VtableStub::receiver_location() == R3_ARG1->as_VMReg(), "receiver expected in R3_ARG1");
73
74 // Get receiver klass.
75 const Register rcvr_klass = R11_scratch1;
76
77 // We might implicit NULL fault here.
78 address npe_addr = __ pc(); // npe = null pointer exception
79 __ load_klass_with_trap_null_check(rcvr_klass, R3);
80
81 // Set method (in case of interpreted method), and destination address.
82 int entry_offset = in_bytes(InstanceKlass::vtable_start_offset()) + vtable_index*vtableEntry::size_in_bytes();
83
84 #ifndef PRODUCT
85 if (DebugVtables) {
86 Label L;
87 // Check offset vs vtable length.
88 const Register vtable_len = R12_scratch2;
89 __ lwz(vtable_len, in_bytes(InstanceKlass::vtable_length_offset()), rcvr_klass);
90 __ cmpwi(CCR0, vtable_len, vtable_index*vtableEntry::size());
91 __ bge(CCR0, L);
92 __ li(R12_scratch2, vtable_index);
93 __ call_VM(noreg, CAST_FROM_FN_PTR(address, bad_compiled_vtable_index), R3_ARG1, R12_scratch2, false);
94 __ bind(L);
95 }
96 #endif
97
98 int v_off = entry_offset + vtableEntry::method_offset_in_bytes();
99
100 __ ld(R19_method, v_off, rcvr_klass);
101
102 #ifndef PRODUCT
103 if (DebugVtables) {
104 Label L;
105 __ cmpdi(CCR0, R19_method, 0);
106 __ bne(CCR0, L);
107 __ stop("Vtable entry is ZERO", 102);
108 __ bind(L);
109 }
110 #endif
111
112 // If the vtable entry is null, the method is abstract.
113 address ame_addr = __ pc(); // ame = abstract method error
114
115 __ load_with_trap_null_check(R12_scratch2, in_bytes(Method::from_compiled_offset()), R19_method);
116 __ mtctr(R12_scratch2);
117 __ bctr();
118 masm->flush();
144
145 assert(VtableStub::receiver_location() == R3_ARG1->as_VMReg(), "receiver expected in R3_ARG1");
146
147 // Entry arguments:
148 // R19_method: Interface
149 // R3_ARG1: Receiver
150 //
151
152 const Register rcvr_klass = R11_scratch1;
153 const Register vtable_len = R12_scratch2;
154 const Register itable_entry_addr = R21_tmp1;
155 const Register itable_interface = R22_tmp2;
156
157 // Get receiver klass.
158
159 // We might implicit NULL fault here.
160 address npe_addr = __ pc(); // npe = null pointer exception
161 __ load_klass_with_trap_null_check(rcvr_klass, R3_ARG1);
162
163 BLOCK_COMMENT("Load start of itable entries into itable_entry.");
164 __ lwz(vtable_len, in_bytes(InstanceKlass::vtable_length_offset()), rcvr_klass);
165 __ slwi(vtable_len, vtable_len, exact_log2(vtableEntry::size_in_bytes()));
166 __ add(itable_entry_addr, vtable_len, rcvr_klass);
167
168 // Loop over all itable entries until desired interfaceOop(Rinterface) found.
169 BLOCK_COMMENT("Increment itable_entry_addr in loop.");
170 const int vtable_base_offset = in_bytes(InstanceKlass::vtable_start_offset());
171 __ addi(itable_entry_addr, itable_entry_addr, vtable_base_offset + itableOffsetEntry::interface_offset_in_bytes());
172
173 const int itable_offset_search_inc = itableOffsetEntry::size() * wordSize;
174 Label search;
175 __ bind(search);
176 __ ld(itable_interface, 0, itable_entry_addr);
177
178 // Handle IncompatibleClassChangeError in itable stubs.
179 // If the entry is NULL then we've reached the end of the table
180 // without finding the expected interface, so throw an exception.
181 BLOCK_COMMENT("Handle IncompatibleClassChangeError in itable stubs.");
182 Label throw_icce;
183 __ cmpdi(CCR1, itable_interface, 0);
184 __ cmpd(CCR0, itable_interface, R19_method);
185 __ addi(itable_entry_addr, itable_entry_addr, itable_offset_search_inc);
186 __ beq(CCR1, throw_icce);
187 __ bne(CCR0, search);
188
189 // Entry found and itable_entry_addr points to it, get offset of vtable for interface.
190
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