100 int CompiledStaticCall::to_interp_stub_size() {
101 return 8 * NativeInstruction::instruction_size;
102 }
103
104 void CompiledDirectStaticCall::set_to_interpreted(const methodHandle& callee, address entry) {
105 address stub = find_stub(/*is_aot*/ false);
106 guarantee(stub != NULL, "stub not found");
107
108 if (TraceICs) {
109 ResourceMark rm;
110 tty->print_cr("CompiledDirectStaticCall@" INTPTR_FORMAT ": set_to_interpreted %s",
111 p2i(instruction_address()),
112 callee->name_and_sig_as_C_string());
113 }
114
115 // Creation also verifies the object.
116 NativeMovConstReg* method_holder = nativeMovConstReg_at(stub);
117 NativeJump* jump = nativeJump_at(method_holder->next_instruction_address());
118
119 #ifdef ASSERT
120 // read the value once
121 volatile intptr_t data = method_holder->data();
122 volatile address destination = jump->jump_destination();
123 assert(data == 0 || data == (intptr_t)callee(),
124 "a) MT-unsafe modification of inline cache");
125 assert(destination == (address)-1 || destination == entry,
126 "b) MT-unsafe modification of inline cache");
127 #endif
128
129 // Update stub.
130 method_holder->set_data((intptr_t)callee());
131 jump->set_jump_destination(entry);
132
133 ICache::invalidate_range(stub, to_interp_stub_size());
134
135 // Update jump to call.
136 set_destination_mt_safe(stub);
137 }
138
139 void CompiledDirectStaticCall::set_stub_to_clean(static_stub_Relocation* static_stub) {
140 // Reset stub.
141 address stub = static_stub->addr();
142 assert(stub != NULL, "stub not found");
143 assert(CompiledICLocker::is_safe(stub), "mt unsafe call");
144 // Creation also verifies the object.
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100 int CompiledStaticCall::to_interp_stub_size() {
101 return 8 * NativeInstruction::instruction_size;
102 }
103
104 void CompiledDirectStaticCall::set_to_interpreted(const methodHandle& callee, address entry) {
105 address stub = find_stub(/*is_aot*/ false);
106 guarantee(stub != NULL, "stub not found");
107
108 if (TraceICs) {
109 ResourceMark rm;
110 tty->print_cr("CompiledDirectStaticCall@" INTPTR_FORMAT ": set_to_interpreted %s",
111 p2i(instruction_address()),
112 callee->name_and_sig_as_C_string());
113 }
114
115 // Creation also verifies the object.
116 NativeMovConstReg* method_holder = nativeMovConstReg_at(stub);
117 NativeJump* jump = nativeJump_at(method_holder->next_instruction_address());
118
119 #ifdef ASSERT
120 // A generated lambda form might be deleted from the Lambdaform
121 // cache in MethodTypeForm. If a jit compiled lambdaform method
122 // becomes not entrant and the cache access returns null, the new
123 // resolve will lead to a new generated LambdaForm.
124 Method* old_method = reinterpret_cast<Method*>(method_holder->data());
125 assert(old_method == NULL || old_method == callee() ||
126 callee->is_compiled_lambda_form() ||
127 !old_method->method_holder()->is_loader_alive() ||
128 old_method->is_old(), // may be race patching deoptimized nmethod due to redefinition.
129 "a) MT-unsafe modification of inline cache");
130
131 address destination = jump->jump_destination();
132 assert(destination == (address)-1 || destination == entry,
133 "b) MT-unsafe modification of inline cache");
134 #endif
135
136 // Update stub.
137 method_holder->set_data((intptr_t)callee());
138 jump->set_jump_destination(entry);
139
140 ICache::invalidate_range(stub, to_interp_stub_size());
141
142 // Update jump to call.
143 set_destination_mt_safe(stub);
144 }
145
146 void CompiledDirectStaticCall::set_stub_to_clean(static_stub_Relocation* static_stub) {
147 // Reset stub.
148 address stub = static_stub->addr();
149 assert(stub != NULL, "stub not found");
150 assert(CompiledICLocker::is_safe(stub), "mt unsafe call");
151 // Creation also verifies the object.
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