1 /*
2 * Copyright (c) 2018, 2019, 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
21 * questions.
22 *
23 */
24
25 #ifndef CPU_X86_GC_SHARED_BARRIERSETASSEMBLER_X86_HPP
26 #define CPU_X86_GC_SHARED_BARRIERSETASSEMBLER_X86_HPP
27
28 #include "asm/macroAssembler.hpp"
29 #include "memory/allocation.hpp"
30 #include "oops/access.hpp"
31 #ifdef COMPILER2
32 #include "opto/optoreg.hpp"
33
34 class BarrierStubC2;
35 class Node;
36 #endif // COMPILER2
37 class InterpreterMacroAssembler;
38
39 class BarrierSetAssembler: public CHeapObj<mtGC> {
40 public:
41 virtual void arraycopy_prologue(MacroAssembler* masm, DecoratorSet decorators, BasicType type,
42 Register src, Register dst, Register count) {}
43 virtual void arraycopy_epilogue(MacroAssembler* masm, DecoratorSet decorators, BasicType type,
44 Register src, Register dst, Register count) {}
45
46 virtual void load_at(MacroAssembler* masm, DecoratorSet decorators, BasicType type,
47 Register dst, Address src, Register tmp1, Register tmp_thread);
48 virtual void store_at(MacroAssembler* masm, DecoratorSet decorators, BasicType type,
49 Address dst, Register val, Register tmp1, Register tmp2, Register tmp3);
50
51 virtual void value_copy(MacroAssembler* masm, DecoratorSet decorators,
52 Register src, Register dst, Register value_klass);
53 virtual void flat_field_copy(MacroAssembler* masm, DecoratorSet decorators,
54 Register src, Register dst, Register inline_layout_info);
55
56 // The copy_[load/store]_at functions are used by arraycopy stubs. Be careful to only use
57 // r10 (aka rscratch1) in a context where restore_arg_regs_using_thread has been used instead
58 // of the looser setup_arg_regs. Currently this is done when using type T_OBJECT.
59 virtual void copy_load_at(MacroAssembler* masm,
60 DecoratorSet decorators,
61 BasicType type,
62 size_t bytes,
63 Register dst,
64 Address src,
65 Register tmp);
66
67 virtual void copy_store_at(MacroAssembler* masm,
68 DecoratorSet decorators,
69 BasicType type,
70 size_t bytes,
71 Address dst,
72 Register src,
73 Register tmp);
74
75 virtual void copy_load_at(MacroAssembler* masm,
76 DecoratorSet decorators,
77 BasicType type,
78 size_t bytes,
79 XMMRegister dst,
80 Address src,
81 Register tmp,
82 XMMRegister xmm_tmp);
83
84 virtual void copy_store_at(MacroAssembler* masm,
85 DecoratorSet decorators,
86 BasicType type,
87 size_t bytes,
88 Address dst,
89 XMMRegister src,
90 Register tmp1,
91 Register tmp2,
92 XMMRegister xmm_tmp);
93
94 virtual bool supports_avx3_masked_arraycopy() { return true; }
95
96 // Support for jniFastGetField to try resolving a jobject/jweak in native
97 virtual void try_resolve_jobject_in_native(MacroAssembler* masm, Register jni_env,
98 Register obj, Register tmp, Label& slowpath);
99
100 virtual void tlab_allocate(MacroAssembler* masm,
101 Register thread, Register obj,
102 Register var_size_in_bytes,
103 int con_size_in_bytes,
104 Register t1, Register t2,
105 Label& slow_case);
106
107 virtual void barrier_stubs_init() {}
108
109 virtual void nmethod_entry_barrier(MacroAssembler* masm, Label* slow_path, Label* continuation);
110 virtual void c2i_entry_barrier(MacroAssembler* masm);
111
112 virtual void check_oop(MacroAssembler* masm, Register obj, Register tmp1, Register tmp2, Label& error);
113
114 #ifdef COMPILER2
115 OptoReg::Name refine_register(const Node* node,
116 OptoReg::Name opto_reg);
117 #endif // COMPILER2
118 };
119
120 #ifdef COMPILER2
121
122 #ifdef _LP64
123
124 // This class saves and restores the registers that need to be preserved across
125 // the runtime call represented by a given C2 barrier stub. Use as follows:
126 // {
127 // SaveLiveRegisters save(masm, stub);
128 // ..
129 // __ call(RuntimeAddress(...);
130 // ..
131 // }
132 class SaveLiveRegisters {
133 private:
134 struct XMMRegisterData {
135 XMMRegister _reg;
136 int _size;
137
138 // Used by GrowableArray::find()
139 bool operator == (const XMMRegisterData& other) {
140 return _reg == other._reg;
141 }
142 };
143
144 MacroAssembler* const _masm;
145 GrowableArray<Register> _gp_registers;
146 GrowableArray<KRegister> _opmask_registers;
147 GrowableArray<XMMRegisterData> _xmm_registers;
148 int _spill_size;
149 int _spill_offset;
150
151 static int xmm_compare_register_size(XMMRegisterData* left, XMMRegisterData* right);
152 static int xmm_slot_size(OptoReg::Name opto_reg);
153 static uint xmm_ideal_reg_for_size(int reg_size);
154 bool xmm_needs_vzeroupper() const;
155 void xmm_register_save(const XMMRegisterData& reg_data);
156 void xmm_register_restore(const XMMRegisterData& reg_data);
157 void gp_register_save(Register reg);
158 void opmask_register_save(KRegister reg);
159 void gp_register_restore(Register reg);
160 void opmask_register_restore(KRegister reg);
161 void initialize(BarrierStubC2* stub);
162
163 public:
164 SaveLiveRegisters(MacroAssembler* masm, BarrierStubC2* stub);
165 ~SaveLiveRegisters();
166 };
167
168 #endif // _LP64
169
170 #endif // COMPILER2
171
172 #endif // CPU_X86_GC_SHARED_BARRIERSETASSEMBLER_X86_HPP