Wed, 21 Jan 2015 12:38:11 +0100
8068013: [TESTBUG] Aix support in hotspot jtreg tests
Reviewed-by: ctornqvi, fzhinkin, farvidsson
1 /*
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3 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
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23 */
25 #include "precompiled.hpp"
26 #include "asm/macroAssembler.inline.hpp"
27 #include "code/compiledIC.hpp"
28 #include "code/icBuffer.hpp"
29 #include "code/nmethod.hpp"
30 #include "memory/resourceArea.hpp"
31 #include "runtime/mutexLocker.hpp"
32 #include "runtime/safepoint.hpp"
34 // Release the CompiledICHolder* associated with this call site is there is one.
35 void CompiledIC::cleanup_call_site(virtual_call_Relocation* call_site) {
36 // This call site might have become stale so inspect it carefully.
37 NativeCall* call = nativeCall_at(call_site->addr());
38 if (is_icholder_entry(call->destination())) {
39 NativeMovConstReg* value = nativeMovConstReg_at(call_site->cached_value());
40 InlineCacheBuffer::queue_for_release((CompiledICHolder*)value->data());
41 }
42 }
44 bool CompiledIC::is_icholder_call_site(virtual_call_Relocation* call_site) {
45 // This call site might have become stale so inspect it carefully.
46 NativeCall* call = nativeCall_at(call_site->addr());
47 return is_icholder_entry(call->destination());
48 }
50 // ----------------------------------------------------------------------------
52 #define __ _masm.
53 void CompiledStaticCall::emit_to_interp_stub(CodeBuffer &cbuf) {
54 // Stub is fixed up when the corresponding call is converted from
55 // calling compiled code to calling interpreted code.
56 // movq rbx, 0
57 // jmp -5 # to self
59 address mark = cbuf.insts_mark(); // Get mark within main instrs section.
61 // Note that the code buffer's insts_mark is always relative to insts.
62 // That's why we must use the macroassembler to generate a stub.
63 MacroAssembler _masm(&cbuf);
65 address base =
66 __ start_a_stub(to_interp_stub_size()*2);
67 if (base == NULL) return; // CodeBuffer::expand failed.
68 // Static stub relocation stores the instruction address of the call.
69 __ relocate(static_stub_Relocation::spec(mark), Assembler::imm_operand);
70 // Static stub relocation also tags the Method* in the code-stream.
71 __ mov_metadata(rbx, (Metadata*) NULL); // Method is zapped till fixup time.
72 // This is recognized as unresolved by relocs/nativeinst/ic code.
73 __ jump(RuntimeAddress(__ pc()));
75 // Update current stubs pointer and restore insts_end.
76 __ end_a_stub();
77 }
78 #undef __
80 int CompiledStaticCall::to_interp_stub_size() {
81 return NOT_LP64(10) // movl; jmp
82 LP64_ONLY(15); // movq (1+1+8); jmp (1+4)
83 }
85 // Relocation entries for call stub, compiled java to interpreter.
86 int CompiledStaticCall::reloc_to_interp_stub() {
87 return 4; // 3 in emit_to_interp_stub + 1 in emit_call
88 }
90 void CompiledStaticCall::set_to_interpreted(methodHandle callee, address entry) {
91 address stub = find_stub();
92 guarantee(stub != NULL, "stub not found");
94 if (TraceICs) {
95 ResourceMark rm;
96 tty->print_cr("CompiledStaticCall@" INTPTR_FORMAT ": set_to_interpreted %s",
97 p2i(instruction_address()),
98 callee->name_and_sig_as_C_string());
99 }
101 // Creation also verifies the object.
102 NativeMovConstReg* method_holder = nativeMovConstReg_at(stub);
103 NativeJump* jump = nativeJump_at(method_holder->next_instruction_address());
105 assert(method_holder->data() == 0 || method_holder->data() == (intptr_t)callee(),
106 "a) MT-unsafe modification of inline cache");
107 assert(jump->jump_destination() == (address)-1 || jump->jump_destination() == entry,
108 "b) MT-unsafe modification of inline cache");
110 // Update stub.
111 method_holder->set_data((intptr_t)callee());
112 jump->set_jump_destination(entry);
114 // Update jump to call.
115 set_destination_mt_safe(stub);
116 }
118 void CompiledStaticCall::set_stub_to_clean(static_stub_Relocation* static_stub) {
119 assert (CompiledIC_lock->is_locked() || SafepointSynchronize::is_at_safepoint(), "mt unsafe call");
120 // Reset stub.
121 address stub = static_stub->addr();
122 assert(stub != NULL, "stub not found");
123 // Creation also verifies the object.
124 NativeMovConstReg* method_holder = nativeMovConstReg_at(stub);
125 NativeJump* jump = nativeJump_at(method_holder->next_instruction_address());
126 method_holder->set_data(0);
127 jump->set_jump_destination((address)-1);
128 }
130 //-----------------------------------------------------------------------------
131 // Non-product mode code
132 #ifndef PRODUCT
134 void CompiledStaticCall::verify() {
135 // Verify call.
136 NativeCall::verify();
137 if (os::is_MP()) {
138 verify_alignment();
139 }
141 // Verify stub.
142 address stub = find_stub();
143 assert(stub != NULL, "no stub found for static call");
144 // Creation also verifies the object.
145 NativeMovConstReg* method_holder = nativeMovConstReg_at(stub);
146 NativeJump* jump = nativeJump_at(method_holder->next_instruction_address());
148 // Verify state.
149 assert(is_clean() || is_call_to_compiled() || is_call_to_interpreted(), "sanity check");
150 }
152 #endif // !PRODUCT