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  X86_64ManagedRuntimeCallingConvention(bool is_static, bool is_synchronized, const char* shorty)
30      : ManagedRuntimeCallingConvention(is_static, is_synchronized, shorty, kFramePointerSize) {}
31  ~X86_64ManagedRuntimeCallingConvention() OVERRIDE {}
32  // Calling convention
33  ManagedRegister ReturnRegister() OVERRIDE;
34  ManagedRegister InterproceduralScratchRegister() OVERRIDE;
35  // Managed runtime calling convention
36  ManagedRegister MethodRegister() OVERRIDE;
37  bool IsCurrentParamInRegister() OVERRIDE;
38  bool IsCurrentParamOnStack() OVERRIDE;
39  ManagedRegister CurrentParamRegister() OVERRIDE;
40  FrameOffset CurrentParamStackOffset() OVERRIDE;
41  const ManagedRegisterEntrySpills& EntrySpills() OVERRIDE;
42 private:
43  ManagedRegisterEntrySpills entry_spills_;
44  DISALLOW_COPY_AND_ASSIGN(X86_64ManagedRuntimeCallingConvention);
45};
46
47class X86_64JniCallingConvention FINAL : public JniCallingConvention {
48 public:
49  X86_64JniCallingConvention(bool is_static, bool is_synchronized, const char* shorty);
50  ~X86_64JniCallingConvention() OVERRIDE {}
51  // Calling convention
52  ManagedRegister ReturnRegister() OVERRIDE;
53  ManagedRegister IntReturnRegister() OVERRIDE;
54  ManagedRegister InterproceduralScratchRegister() OVERRIDE;
55  // JNI calling convention
56  size_t FrameSize() OVERRIDE;
57  size_t OutArgSize() OVERRIDE;
58  const std::vector<ManagedRegister>& CalleeSaveRegisters() const OVERRIDE {
59    return callee_save_regs_;
60  }
61  ManagedRegister ReturnScratchRegister() const OVERRIDE;
62  uint32_t CoreSpillMask() const OVERRIDE;
63  uint32_t FpSpillMask() const OVERRIDE;
64  bool IsCurrentParamInRegister() OVERRIDE;
65  bool IsCurrentParamOnStack() OVERRIDE;
66  ManagedRegister CurrentParamRegister() OVERRIDE;
67  FrameOffset CurrentParamStackOffset() OVERRIDE;
68
69  // x86-64 needs to extend small return types.
70  bool RequiresSmallResultTypeExtension() const OVERRIDE {
71    return true;
72  }
73
74 protected:
75  size_t NumberOfOutgoingStackArgs() OVERRIDE;
76
77 private:
78  // TODO: these values aren't unique and can be shared amongst instances
79  std::vector<ManagedRegister> callee_save_regs_;
80
81  DISALLOW_COPY_AND_ASSIGN(X86_64JniCallingConvention);
82};
83
84}  // namespace x86_64
85}  // namespace art
86
87#endif  // ART_COMPILER_JNI_QUICK_X86_64_CALLING_CONVENTION_X86_64_H_
88