36
37 // Release the CompiledICHolder* associated with this call site is there is one.
38 void CompiledIC::cleanup_call_site(virtual_call_Relocation* call_site) {
39 // This call site might have become stale so inspect it carefully.
40 NativeCall* call = nativeCall_at(call_site->addr());
41 if (is_icholder_entry(call->destination())) {
42 NativeMovConstReg* value = nativeMovConstReg_at(call_site->cached_value());
43 InlineCacheBuffer::queue_for_release((CompiledICHolder*)value->data());
44 }
45 }
46
47 bool CompiledIC::is_icholder_call_site(virtual_call_Relocation* call_site) {
48 // This call site might have become stale so inspect it carefully.
49 NativeCall* call = nativeCall_at(call_site->addr());
50 return is_icholder_entry(call->destination());
51 }
52
53 // ----------------------------------------------------------------------------
54
55 #define __ _masm.
56 address CompiledStaticCall::emit_to_interp_stub(CodeBuffer &cbuf) {
57 #ifdef COMPILER2
58 // Stub is fixed up when the corresponding call is converted from calling
59 // compiled code to calling interpreted code.
60 // set (empty), G5
61 // jmp -1
62
63 address mark = cbuf.insts_mark(); // Get mark within main instrs section.
64
65 MacroAssembler _masm(&cbuf);
66
67 address base = __ start_a_stub(to_interp_stub_size());
68 if (base == NULL) {
69 return NULL; // CodeBuffer::expand failed.
70 }
71
72 // Static stub relocation stores the instruction address of the call.
73 __ relocate(static_stub_Relocation::spec(mark));
74
75 __ set_metadata(NULL, as_Register(Matcher::inline_cache_reg_encode()));
76
77 __ set_inst_mark();
78 AddressLiteral addrlit(-1);
79 __ JUMP(addrlit, G3, 0);
80
81 __ delayed()->nop();
82
83 // Update current stubs pointer and restore code_end.
84 __ end_a_stub();
85 return base;
86 #else
87 ShouldNotReachHere();
88 #endif
89 }
90 #undef __
91
92 int CompiledStaticCall::to_interp_stub_size() {
93 // This doesn't need to be accurate but it must be larger or equal to
94 // the real size of the stub.
95 return (NativeMovConstReg::instruction_size + // sethi/setlo;
96 NativeJump::instruction_size + // sethi; jmp; nop
97 (TraceJumps ? 20 * BytesPerInstWord : 0) );
98 }
99
100 // Relocation entries for call stub, compiled java to interpreter.
101 int CompiledStaticCall::reloc_to_interp_stub() {
102 return 10; // 4 in emit_java_to_interp + 1 in Java_Static_Call
103 }
104
105 void CompiledStaticCall::set_to_interpreted(methodHandle callee, address entry) {
106 address stub = find_stub();
107 guarantee(stub != NULL, "stub not found");
108
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36
37 // Release the CompiledICHolder* associated with this call site is there is one.
38 void CompiledIC::cleanup_call_site(virtual_call_Relocation* call_site) {
39 // This call site might have become stale so inspect it carefully.
40 NativeCall* call = nativeCall_at(call_site->addr());
41 if (is_icholder_entry(call->destination())) {
42 NativeMovConstReg* value = nativeMovConstReg_at(call_site->cached_value());
43 InlineCacheBuffer::queue_for_release((CompiledICHolder*)value->data());
44 }
45 }
46
47 bool CompiledIC::is_icholder_call_site(virtual_call_Relocation* call_site) {
48 // This call site might have become stale so inspect it carefully.
49 NativeCall* call = nativeCall_at(call_site->addr());
50 return is_icholder_entry(call->destination());
51 }
52
53 // ----------------------------------------------------------------------------
54
55 #define __ _masm.
56 address CompiledStaticCall::emit_to_interp_stub(CodeBuffer &cbuf, address mark) {
57 // Stub is fixed up when the corresponding call is converted from calling
58 // compiled code to calling interpreted code.
59 // set (empty), G5
60 // jmp -1
61
62 if (mark == NULL) {
63 mark = cbuf.insts_mark(); // Get mark within main instrs section.
64 }
65
66 MacroAssembler _masm(&cbuf);
67
68 address base = __ start_a_stub(to_interp_stub_size());
69 if (base == NULL) {
70 return NULL; // CodeBuffer::expand failed.
71 }
72
73 // Static stub relocation stores the instruction address of the call.
74 __ relocate(static_stub_Relocation::spec(mark));
75
76 __ set_metadata(NULL, as_Register(Matcher::inline_cache_reg_encode()));
77
78 __ set_inst_mark();
79 AddressLiteral addrlit(-1);
80 __ JUMP(addrlit, G3, 0);
81
82 __ delayed()->nop();
83
84 assert(__ pc() - base <= to_interp_stub_size(), "wrong stub size");
85
86 // Update current stubs pointer and restore code_end.
87 __ end_a_stub();
88 return base;
89 }
90 #undef __
91
92 int CompiledStaticCall::to_interp_stub_size() {
93 // This doesn't need to be accurate but it must be larger or equal to
94 // the real size of the stub.
95 return (NativeMovConstReg::instruction_size + // sethi/setlo;
96 NativeJump::instruction_size + // sethi; jmp; nop
97 (TraceJumps ? 20 * BytesPerInstWord : 0) );
98 }
99
100 // Relocation entries for call stub, compiled java to interpreter.
101 int CompiledStaticCall::reloc_to_interp_stub() {
102 return 10; // 4 in emit_java_to_interp + 1 in Java_Static_Call
103 }
104
105 void CompiledStaticCall::set_to_interpreted(methodHandle callee, address entry) {
106 address stub = find_stub();
107 guarantee(stub != NULL, "stub not found");
108
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