89 int CompiledStaticCall::reloc_to_interp_stub() {
90 return 10; // 4 in emit_java_to_interp + 1 in Java_Static_Call
91 }
92
93 void CompiledDirectStaticCall::set_to_interpreted(const methodHandle& callee, address entry) {
94 address stub = find_stub(/*is_aot*/ false);
95 guarantee(stub != NULL, "stub not found");
96
97 if (TraceICs) {
98 ResourceMark rm;
99 tty->print_cr("CompiledDirectStaticCall@" INTPTR_FORMAT ": set_to_interpreted %s",
100 p2i(instruction_address()),
101 callee->name_and_sig_as_C_string());
102 }
103
104 // Creation also verifies the object.
105 NativeMovConstReg* method_holder = nativeMovConstReg_at(stub);
106 NativeJump* jump = nativeJump_at(method_holder->next_instruction_address());
107
108 #ifdef ASSERT
109 // read the value once
110 volatile intptr_t data = method_holder->data();
111 volatile address destination = jump->jump_destination();
112 assert(data == 0 || data == (intptr_t)callee(),
113 "a) MT-unsafe modification of inline cache");
114 assert(destination == (address)-1 || destination == entry,
115 "b) MT-unsafe modification of inline cache");
116 #endif
117
118 // Update stub.
119 method_holder->set_data((intptr_t)callee());
120 jump->set_jump_destination(entry);
121
122 // Update jump to call.
123 set_destination_mt_safe(stub);
124 }
125
126 void CompiledDirectStaticCall::set_stub_to_clean(static_stub_Relocation* static_stub) {
127 // Reset stub.
128 address stub = static_stub->addr();
129 assert(stub != NULL, "stub not found");
130 assert(CompiledICLocker::is_safe(stub), "mt unsafe call");
131 // Creation also verifies the object.
132 NativeMovConstReg* method_holder = nativeMovConstReg_at(stub);
133 NativeJump* jump = nativeJump_at(method_holder->next_instruction_address());
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89 int CompiledStaticCall::reloc_to_interp_stub() {
90 return 10; // 4 in emit_java_to_interp + 1 in Java_Static_Call
91 }
92
93 void CompiledDirectStaticCall::set_to_interpreted(const methodHandle& callee, address entry) {
94 address stub = find_stub(/*is_aot*/ false);
95 guarantee(stub != NULL, "stub not found");
96
97 if (TraceICs) {
98 ResourceMark rm;
99 tty->print_cr("CompiledDirectStaticCall@" INTPTR_FORMAT ": set_to_interpreted %s",
100 p2i(instruction_address()),
101 callee->name_and_sig_as_C_string());
102 }
103
104 // Creation also verifies the object.
105 NativeMovConstReg* method_holder = nativeMovConstReg_at(stub);
106 NativeJump* jump = nativeJump_at(method_holder->next_instruction_address());
107
108 #ifdef ASSERT
109 // A generated lambda form might be deleted from the Lambdaform
110 // cache in MethodTypeForm. If a jit compiled lambdaform method
111 // becomes not entrant and the cache access returns null, the new
112 // resolve will lead to a new generated LambdaForm.
113 Method* volatile old_method = reinterpret_cast<Method*>(method_holder->data());
114 assert(old_method == NULL || old_method == callee() ||
115 callee->is_compiled_lambda_form() ||
116 !old_method->method_holder()->is_loader_alive() ||
117 old_method->is_old(), // may be race patching deoptimized nmethod due to redefinition.
118 "a) MT-unsafe modification of inline cache");
119
120 volatile address destination = jump->jump_destination();
121 assert(destination == (address)-1 || destination == entry,
122 "b) MT-unsafe modification of inline cache");
123 #endif
124
125 // Update stub.
126 method_holder->set_data((intptr_t)callee());
127 jump->set_jump_destination(entry);
128
129 // Update jump to call.
130 set_destination_mt_safe(stub);
131 }
132
133 void CompiledDirectStaticCall::set_stub_to_clean(static_stub_Relocation* static_stub) {
134 // Reset stub.
135 address stub = static_stub->addr();
136 assert(stub != NULL, "stub not found");
137 assert(CompiledICLocker::is_safe(stub), "mt unsafe call");
138 // Creation also verifies the object.
139 NativeMovConstReg* method_holder = nativeMovConstReg_at(stub);
140 NativeJump* jump = nativeJump_at(method_holder->next_instruction_address());
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