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      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 "base/enums.h"
     21 #include "jni/quick/calling_convention.h"
     22 
     23 namespace art {
     24 namespace x86_64 {
     25 
     26 class X86_64ManagedRuntimeCallingConvention FINAL : public ManagedRuntimeCallingConvention {
     27  public:
     28   X86_64ManagedRuntimeCallingConvention(bool is_static, bool is_synchronized, const char* shorty)
     29       : ManagedRuntimeCallingConvention(is_static,
     30                                         is_synchronized,
     31                                         shorty,
     32                                         PointerSize::k64) {}
     33   ~X86_64ManagedRuntimeCallingConvention() OVERRIDE {}
     34   // Calling convention
     35   ManagedRegister ReturnRegister() OVERRIDE;
     36   ManagedRegister InterproceduralScratchRegister() OVERRIDE;
     37   // Managed runtime calling convention
     38   ManagedRegister MethodRegister() OVERRIDE;
     39   bool IsCurrentParamInRegister() OVERRIDE;
     40   bool IsCurrentParamOnStack() OVERRIDE;
     41   ManagedRegister CurrentParamRegister() OVERRIDE;
     42   FrameOffset CurrentParamStackOffset() OVERRIDE;
     43   const ManagedRegisterEntrySpills& EntrySpills() OVERRIDE;
     44  private:
     45   ManagedRegisterEntrySpills entry_spills_;
     46   DISALLOW_COPY_AND_ASSIGN(X86_64ManagedRuntimeCallingConvention);
     47 };
     48 
     49 class X86_64JniCallingConvention FINAL : public JniCallingConvention {
     50  public:
     51   X86_64JniCallingConvention(bool is_static,
     52                              bool is_synchronized,
     53                              bool is_critical_native,
     54                              const char* shorty);
     55   ~X86_64JniCallingConvention() OVERRIDE {}
     56   // Calling convention
     57   ManagedRegister ReturnRegister() OVERRIDE;
     58   ManagedRegister IntReturnRegister() OVERRIDE;
     59   ManagedRegister InterproceduralScratchRegister() OVERRIDE;
     60   // JNI calling convention
     61   size_t FrameSize() OVERRIDE;
     62   size_t OutArgSize() OVERRIDE;
     63   ArrayRef<const ManagedRegister> CalleeSaveRegisters() const OVERRIDE;
     64   ManagedRegister ReturnScratchRegister() const OVERRIDE;
     65   uint32_t CoreSpillMask() const OVERRIDE;
     66   uint32_t FpSpillMask() const OVERRIDE;
     67   bool IsCurrentParamInRegister() OVERRIDE;
     68   bool IsCurrentParamOnStack() OVERRIDE;
     69   ManagedRegister CurrentParamRegister() OVERRIDE;
     70   FrameOffset CurrentParamStackOffset() OVERRIDE;
     71 
     72   // x86-64 needs to extend small return types.
     73   bool RequiresSmallResultTypeExtension() const OVERRIDE {
     74     return true;
     75   }
     76 
     77  protected:
     78   size_t NumberOfOutgoingStackArgs() OVERRIDE;
     79 
     80  private:
     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