1/*
2 * Copyright (C) 2015 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_MIPS64_CALLING_CONVENTION_MIPS64_H_
18#define ART_COMPILER_JNI_QUICK_MIPS64_CALLING_CONVENTION_MIPS64_H_
19
20#include "jni/quick/calling_convention.h"
21
22namespace art {
23namespace mips64 {
24
25constexpr size_t kFramePointerSize = 8;
26
27class Mips64ManagedRuntimeCallingConvention FINAL : public ManagedRuntimeCallingConvention {
28 public:
29  Mips64ManagedRuntimeCallingConvention(bool is_static, bool is_synchronized, const char* shorty)
30      : ManagedRuntimeCallingConvention(is_static, is_synchronized, shorty, kFramePointerSize) {}
31  ~Mips64ManagedRuntimeCallingConvention() 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
43 private:
44  ManagedRegisterEntrySpills entry_spills_;
45
46  DISALLOW_COPY_AND_ASSIGN(Mips64ManagedRuntimeCallingConvention);
47};
48
49class Mips64JniCallingConvention FINAL : public JniCallingConvention {
50 public:
51  Mips64JniCallingConvention(bool is_static, bool is_synchronized, const char* shorty);
52  ~Mips64JniCallingConvention() OVERRIDE {}
53  // Calling convention
54  ManagedRegister ReturnRegister() OVERRIDE;
55  ManagedRegister IntReturnRegister() OVERRIDE;
56  ManagedRegister InterproceduralScratchRegister() OVERRIDE;
57  // JNI calling convention
58  size_t FrameSize() OVERRIDE;
59  size_t OutArgSize() OVERRIDE;
60  const std::vector<ManagedRegister>& CalleeSaveRegisters() const OVERRIDE {
61    return callee_save_regs_;
62  }
63  ManagedRegister ReturnScratchRegister() const OVERRIDE;
64  uint32_t CoreSpillMask() const OVERRIDE;
65  uint32_t FpSpillMask() const OVERRIDE {
66    return 0;  // Floats aren't spilled in JNI down call
67  }
68  bool IsCurrentParamInRegister() OVERRIDE;
69  bool IsCurrentParamOnStack() OVERRIDE;
70  ManagedRegister CurrentParamRegister() OVERRIDE;
71  FrameOffset CurrentParamStackOffset() OVERRIDE;
72
73  // Mips64 does not need to extend small return types.
74  bool RequiresSmallResultTypeExtension() const OVERRIDE {
75    return false;
76  }
77
78 protected:
79  size_t NumberOfOutgoingStackArgs() OVERRIDE;
80
81 private:
82  // TODO: these values aren't unique and can be shared amongst instances
83  std::vector<ManagedRegister> callee_save_regs_;
84
85  DISALLOW_COPY_AND_ASSIGN(Mips64JniCallingConvention);
86};
87
88}  // namespace mips64
89}  // namespace art
90
91#endif  // ART_COMPILER_JNI_QUICK_MIPS64_CALLING_CONVENTION_MIPS64_H_
92