1 /* 2 * Copyright (C) 2011 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_CALLING_CONVENTION_X86_H_ 18 #define ART_COMPILER_JNI_QUICK_X86_CALLING_CONVENTION_X86_H_ 19 20 #include "jni/quick/calling_convention.h" 21 22 namespace art { 23 namespace x86 { 24 25 constexpr size_t kFramePointerSize = 4; 26 27 class X86ManagedRuntimeCallingConvention FINAL : public ManagedRuntimeCallingConvention { 28 public: X86ManagedRuntimeCallingConvention(bool is_static,bool is_synchronized,const char * shorty)29 X86ManagedRuntimeCallingConvention(bool is_static, bool is_synchronized, const char* shorty) 30 : ManagedRuntimeCallingConvention(is_static, is_synchronized, shorty, kFramePointerSize), 31 gpr_arg_count_(0) {} ~X86ManagedRuntimeCallingConvention()32 ~X86ManagedRuntimeCallingConvention() 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 44 private: 45 int gpr_arg_count_; 46 ManagedRegister CurrentParamHighLongRegister(); 47 ManagedRegisterEntrySpills entry_spills_; 48 DISALLOW_COPY_AND_ASSIGN(X86ManagedRuntimeCallingConvention); 49 }; 50 51 class X86JniCallingConvention FINAL : public JniCallingConvention { 52 public: 53 X86JniCallingConvention(bool is_static, bool is_synchronized, const char* shorty); ~X86JniCallingConvention()54 ~X86JniCallingConvention() OVERRIDE {} 55 // Calling convention 56 ManagedRegister ReturnRegister() OVERRIDE; 57 ManagedRegister IntReturnRegister() OVERRIDE; 58 ManagedRegister InterproceduralScratchRegister() OVERRIDE; 59 // JNI calling convention 60 size_t FrameSize() OVERRIDE; 61 size_t OutArgSize() OVERRIDE; CalleeSaveRegisters()62 const std::vector<ManagedRegister>& CalleeSaveRegisters() const OVERRIDE { 63 return callee_save_regs_; 64 } 65 ManagedRegister ReturnScratchRegister() const OVERRIDE; 66 uint32_t CoreSpillMask() const OVERRIDE; FpSpillMask()67 uint32_t FpSpillMask() const OVERRIDE { 68 return 0; 69 } 70 bool IsCurrentParamInRegister() OVERRIDE; 71 bool IsCurrentParamOnStack() OVERRIDE; 72 ManagedRegister CurrentParamRegister() OVERRIDE; 73 FrameOffset CurrentParamStackOffset() OVERRIDE; 74 75 // x86 needs to extend small return types. RequiresSmallResultTypeExtension()76 bool RequiresSmallResultTypeExtension() const OVERRIDE { 77 return true; 78 } 79 80 protected: 81 size_t NumberOfOutgoingStackArgs() OVERRIDE; 82 83 private: 84 // TODO: these values aren't unique and can be shared amongst instances 85 std::vector<ManagedRegister> callee_save_regs_; 86 87 DISALLOW_COPY_AND_ASSIGN(X86JniCallingConvention); 88 }; 89 90 } // namespace x86 91 } // namespace art 92 93 #endif // ART_COMPILER_JNI_QUICK_X86_CALLING_CONVENTION_X86_H_ 94