1 /*
 2  * Copyright (c) 2018, 2020, Oracle and/or its affiliates. All rights reserved.
 3  * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
 4  *
 5  * This code is free software; you can redistribute it and/or modify it
 6  * under the terms of the GNU General Public License version 2 only, as
 7  * published by the Free Software Foundation.
 8  *
 9  * This code is distributed in the hope that it will be useful, but WITHOUT
10  * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
11  * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
12  * version 2 for more details (a copy is included in the LICENSE file that
13  * accompanied this code).
14  *
15  * You should have received a copy of the GNU General Public License version
16  * 2 along with this work; if not, write to the Free Software Foundation,
17  * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
18  *
19  * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
20  * or visit www.oracle.com if you need additional information or have any
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24 
25 #ifndef CPU_AARCH64_GC_SHARED_BARRIERSETASSEMBLER_AARCH64_HPP
26 #define CPU_AARCH64_GC_SHARED_BARRIERSETASSEMBLER_AARCH64_HPP
27 
28 #include "asm/macroAssembler.hpp"
29 #include "gc/shared/barrierSet.hpp"
30 #include "gc/shared/barrierSetNMethod.hpp"
31 #include "memory/allocation.hpp"
32 #include "oops/access.hpp"
33 
34 class BarrierSetAssembler: public CHeapObj<mtGC> {
35 private:
36   void incr_allocated_bytes(MacroAssembler* masm,
37                             Register var_size_in_bytes, int con_size_in_bytes,
38                             Register t1 = noreg);
39 
40 public:
41   virtual void arraycopy_prologue(MacroAssembler* masm, DecoratorSet decorators, bool is_oop,
42                                   Register src, Register dst, Register count, RegSet saved_regs) {}
43   virtual void arraycopy_epilogue(MacroAssembler* masm, DecoratorSet decorators, bool is_oop,
44                                   Register start, Register end, Register tmp, RegSet saved_regs) {}
45   virtual void load_at(MacroAssembler* masm, DecoratorSet decorators, BasicType type,
46                        Register dst, Address src, Register tmp1, Register tmp_thread);
47   virtual void store_at(MacroAssembler* masm, DecoratorSet decorators, BasicType type,
48                         Address dst, Register val, Register tmp1, Register tmp2);
49 
50   virtual void try_resolve_jobject_in_native(MacroAssembler* masm, Register jni_env,
51                                              Register obj, Register tmp, Label& slowpath);
52 
53   virtual void tlab_allocate(MacroAssembler* masm,
54     Register obj,                      // result: pointer to object after successful allocation
55     Register var_size_in_bytes,        // object size in bytes if unknown at compile time; invalid otherwise
56     int      con_size_in_bytes,        // object size in bytes if   known at compile time
57     Register t1,                       // temp register
58     Register t2,                       // temp register
59     Label&   slow_case                 // continuation point if fast allocation fails
60   );
61 
62   void eden_allocate(MacroAssembler* masm,
63     Register obj,                      // result: pointer to object after successful allocation
64     Register var_size_in_bytes,        // object size in bytes if unknown at compile time; invalid otherwise
65     int      con_size_in_bytes,        // object size in bytes if   known at compile time
66     Register t1,                       // temp register
67     Label&   slow_case                 // continuation point if fast allocation fails
68   );
69   virtual void barrier_stubs_init() {}
70 
71   virtual void nmethod_entry_barrier(MacroAssembler* masm);
72   virtual void c2i_entry_barrier(MacroAssembler* masm);
73 
74 };
75 
76 #endif // CPU_AARCH64_GC_SHARED_BARRIERSETASSEMBLER_AARCH64_HPP