73 __ z_br(Z_R1);
74 __ end_a_stub(); // Update current stubs pointer and restore insts_end.
75 return stub;
76 #else
77 ShouldNotReachHere();
78 #endif
79 }
80
81 #undef __
82
83 int CompiledStaticCall::to_interp_stub_size() {
84 return 2 * MacroAssembler::load_const_from_toc_size() +
85 2; // branch
86 }
87
88 // Relocation entries for call stub, compiled java to interpreter.
89 int CompiledStaticCall::reloc_to_interp_stub() {
90 return 5; // 4 in emit_java_to_interp + 1 in Java_Static_Call
91 }
92
93 void CompiledStaticCall::set_to_interpreted(methodHandle callee, address entry) {
94 address stub = find_stub();
95 guarantee(stub != NULL, "stub not found");
96
97 if (TraceICs) {
98 ResourceMark rm;
99 tty->print_cr("CompiledStaticCall@" 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 + get_IC_pos_in_java_to_interp_stub());
106 NativeJump* jump = nativeJump_at(method_holder->next_instruction_address());
107
108 // A generated lambda form might be deleted from the Lambdaform
109 // cache in MethodTypeForm. If a jit compiled lambdaform method
110 // becomes not entrant and the cache access returns null, the new
111 // resolve will lead to a new generated LambdaForm.
112
113 assert(method_holder->data() == 0 || method_holder->data() == (intptr_t)callee() || callee->is_compiled_lambda_form(),
114 "a) MT-unsafe modification of inline cache");
115 assert(jump->jump_destination() == (address)-1 || jump->jump_destination() == entry,
116 "b) MT-unsafe modification of inline cache");
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 CompiledStaticCall::set_stub_to_clean(static_stub_Relocation* static_stub) {
127 assert (CompiledIC_lock->is_locked() || SafepointSynchronize::is_at_safepoint(), "mt unsafe call");
128 // Reset stub.
129 address stub = static_stub->addr();
130 assert(stub != NULL, "stub not found");
131 // Creation also verifies the object.
132 NativeMovConstReg* method_holder = nativeMovConstReg_at(stub + get_IC_pos_in_java_to_interp_stub());
133 NativeJump* jump = nativeJump_at(method_holder->next_instruction_address());
134 method_holder->set_data(0);
135 jump->set_jump_destination((address)-1);
136 }
137
138 //-----------------------------------------------------------------------------
139
140 #ifndef PRODUCT
141
142 void CompiledStaticCall::verify() {
143 // Verify call.
144 NativeCall::verify();
145 if (os::is_MP()) {
146 verify_alignment();
147 }
148
149 // Verify stub.
150 address stub = find_stub();
151 assert(stub != NULL, "no stub found for static call");
152 // Creation also verifies the object.
153 NativeMovConstReg* method_holder = nativeMovConstReg_at(stub + get_IC_pos_in_java_to_interp_stub());
154 NativeJump* jump = nativeJump_at(method_holder->next_instruction_address());
155
156 // Verify state.
157 assert(is_clean() || is_call_to_compiled() || is_call_to_interpreted(), "sanity check");
158 }
159
160 #endif // !PRODUCT
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73 __ z_br(Z_R1);
74 __ end_a_stub(); // Update current stubs pointer and restore insts_end.
75 return stub;
76 #else
77 ShouldNotReachHere();
78 #endif
79 }
80
81 #undef __
82
83 int CompiledStaticCall::to_interp_stub_size() {
84 return 2 * MacroAssembler::load_const_from_toc_size() +
85 2; // branch
86 }
87
88 // Relocation entries for call stub, compiled java to interpreter.
89 int CompiledStaticCall::reloc_to_interp_stub() {
90 return 5; // 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 + NativeCall::get_IC_pos_in_java_to_interp_stub());
106 NativeJump* jump = nativeJump_at(method_holder->next_instruction_address());
107
108 // A generated lambda form might be deleted from the Lambdaform
109 // cache in MethodTypeForm. If a jit compiled lambdaform method
110 // becomes not entrant and the cache access returns null, the new
111 // resolve will lead to a new generated LambdaForm.
112
113 assert(method_holder->data() == 0 || method_holder->data() == (intptr_t)callee() || callee->is_compiled_lambda_form(),
114 "a) MT-unsafe modification of inline cache");
115 assert(jump->jump_destination() == (address)-1 || jump->jump_destination() == entry,
116 "b) MT-unsafe modification of inline cache");
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 assert (CompiledIC_lock->is_locked() || SafepointSynchronize::is_at_safepoint(), "mt unsafe call");
128 // Reset stub.
129 address stub = static_stub->addr();
130 assert(stub != NULL, "stub not found");
131 // Creation also verifies the object.
132 NativeMovConstReg* method_holder = nativeMovConstReg_at(stub + NativeCall::get_IC_pos_in_java_to_interp_stub());
133 NativeJump* jump = nativeJump_at(method_holder->next_instruction_address());
134 method_holder->set_data(0);
135 jump->set_jump_destination((address)-1);
136 }
137
138 //-----------------------------------------------------------------------------
139
140 #ifndef PRODUCT
141
142 void CompiledDirectStaticCall::verify() {
143 // Verify call.
144 _call->verify();
145 if (os::is_MP()) {
146 _call->verify_alignment();
147 }
148
149 // Verify stub.
150 address stub = find_stub(/*is_aot*/ false);
151 assert(stub != NULL, "no stub found for static call");
152 // Creation also verifies the object.
153 NativeMovConstReg* method_holder = nativeMovConstReg_at(stub + NativeCall::get_IC_pos_in_java_to_interp_stub());
154 NativeJump* jump = nativeJump_at(method_holder->next_instruction_address());
155
156 // Verify state.
157 assert(is_clean() || is_call_to_compiled() || is_call_to_interpreted(), "sanity check");
158 }
159
160 #endif // !PRODUCT
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