1/*
2 * Copyright (C) 2014 The Android Open Source Project
3 *
4 * Licensed under the Apache License, Version 2.0 (the "License");
5 * you may not use this file except in compliance with the License.
6 * You may obtain a copy of the License at
7 *
8 *      http://www.apache.org/licenses/LICENSE-2.0
9 *
10 * Unless required by applicable law or agreed to in writing, software
11 * distributed under the License is distributed on an "AS IS" BASIS,
12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
13 * See the License for the specific language governing permissions and
14 * limitations under the License.
15 */
16
17#ifndef ART_COMPILER_JNI_QUICK_X86_64_CALLING_CONVENTION_X86_64_H_
18#define ART_COMPILER_JNI_QUICK_X86_64_CALLING_CONVENTION_X86_64_H_
19
20#include "jni/quick/calling_convention.h"
21
22namespace art {
23namespace x86_64 {
24
25constexpr size_t kFramePointerSize = 8;
26
27class X86_64ManagedRuntimeCallingConvention FINAL : public ManagedRuntimeCallingConvention {
28 public:
29  explicit X86_64ManagedRuntimeCallingConvention(bool is_static, bool is_synchronized,
30                                              const char* shorty)
31      : ManagedRuntimeCallingConvention(is_static, is_synchronized, shorty, kFramePointerSize) {}
32  ~X86_64ManagedRuntimeCallingConvention() OVERRIDE {}
33  // Calling convention
34  ManagedRegister ReturnRegister() OVERRIDE;
35  ManagedRegister InterproceduralScratchRegister() OVERRIDE;
36  // Managed runtime calling convention
37  ManagedRegister MethodRegister() OVERRIDE;
38  bool IsCurrentParamInRegister() OVERRIDE;
39  bool IsCurrentParamOnStack() OVERRIDE;
40  ManagedRegister CurrentParamRegister() OVERRIDE;
41  FrameOffset CurrentParamStackOffset() OVERRIDE;
42  const ManagedRegisterEntrySpills& EntrySpills() OVERRIDE;
43 private:
44  ManagedRegisterEntrySpills entry_spills_;
45  DISALLOW_COPY_AND_ASSIGN(X86_64ManagedRuntimeCallingConvention);
46};
47
48class X86_64JniCallingConvention FINAL : public JniCallingConvention {
49 public:
50  explicit X86_64JniCallingConvention(bool is_static, bool is_synchronized, const char* shorty);
51  ~X86_64JniCallingConvention() OVERRIDE {}
52  // Calling convention
53  ManagedRegister ReturnRegister() OVERRIDE;
54  ManagedRegister IntReturnRegister() OVERRIDE;
55  ManagedRegister InterproceduralScratchRegister() OVERRIDE;
56  // JNI calling convention
57  size_t FrameSize() OVERRIDE;
58  size_t OutArgSize() OVERRIDE;
59  const std::vector<ManagedRegister>& CalleeSaveRegisters() const OVERRIDE {
60    return callee_save_regs_;
61  }
62  ManagedRegister ReturnScratchRegister() const OVERRIDE;
63  uint32_t CoreSpillMask() const OVERRIDE;
64  uint32_t FpSpillMask() const OVERRIDE;
65  bool IsCurrentParamInRegister() OVERRIDE;
66  bool IsCurrentParamOnStack() OVERRIDE;
67  ManagedRegister CurrentParamRegister() OVERRIDE;
68  FrameOffset CurrentParamStackOffset() OVERRIDE;
69
70  // x86-64 needs to extend small return types.
71  bool RequiresSmallResultTypeExtension() const OVERRIDE {
72    return true;
73  }
74
75 protected:
76  size_t NumberOfOutgoingStackArgs() OVERRIDE;
77
78 private:
79  // TODO: these values aren't unique and can be shared amongst instances
80  std::vector<ManagedRegister> callee_save_regs_;
81
82  DISALLOW_COPY_AND_ASSIGN(X86_64JniCallingConvention);
83};
84
85}  // namespace x86_64
86}  // namespace art
87
88#endif  // ART_COMPILER_JNI_QUICK_X86_64_CALLING_CONVENTION_X86_64_H_
89