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/*
* Copyright (C) 2011 The Android Open Source Project
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
#ifndef ART_COMPILER_JNI_QUICK_X86_CALLING_CONVENTION_X86_H_
#define ART_COMPILER_JNI_QUICK_X86_CALLING_CONVENTION_X86_H_
#include "jni/quick/calling_convention.h"
namespace art {
namespace x86 {
constexpr size_t kFramePointerSize = 4;
class X86ManagedRuntimeCallingConvention FINAL : public ManagedRuntimeCallingConvention {
public:
explicit X86ManagedRuntimeCallingConvention(bool is_static, bool is_synchronized,
const char* shorty)
: ManagedRuntimeCallingConvention(is_static, is_synchronized, shorty, kFramePointerSize),
gpr_arg_count_(0) {}
~X86ManagedRuntimeCallingConvention() OVERRIDE {}
// Calling convention
ManagedRegister ReturnRegister() OVERRIDE;
ManagedRegister InterproceduralScratchRegister() OVERRIDE;
// Managed runtime calling convention
ManagedRegister MethodRegister() OVERRIDE;
bool IsCurrentParamInRegister() OVERRIDE;
bool IsCurrentParamOnStack() OVERRIDE;
ManagedRegister CurrentParamRegister() OVERRIDE;
FrameOffset CurrentParamStackOffset() OVERRIDE;
const ManagedRegisterEntrySpills& EntrySpills() OVERRIDE;
private:
int gpr_arg_count_;
ManagedRegister CurrentParamHighLongRegister();
ManagedRegisterEntrySpills entry_spills_;
DISALLOW_COPY_AND_ASSIGN(X86ManagedRuntimeCallingConvention);
};
class X86JniCallingConvention FINAL : public JniCallingConvention {
public:
explicit X86JniCallingConvention(bool is_static, bool is_synchronized, const char* shorty);
~X86JniCallingConvention() OVERRIDE {}
// Calling convention
ManagedRegister ReturnRegister() OVERRIDE;
ManagedRegister IntReturnRegister() OVERRIDE;
ManagedRegister InterproceduralScratchRegister() OVERRIDE;
// JNI calling convention
size_t FrameSize() OVERRIDE;
size_t OutArgSize() OVERRIDE;
const std::vector<ManagedRegister>& CalleeSaveRegisters() const OVERRIDE {
return callee_save_regs_;
}
ManagedRegister ReturnScratchRegister() const OVERRIDE;
uint32_t CoreSpillMask() const OVERRIDE;
uint32_t FpSpillMask() const OVERRIDE {
return 0;
}
bool IsCurrentParamInRegister() OVERRIDE;
bool IsCurrentParamOnStack() OVERRIDE;
ManagedRegister CurrentParamRegister() OVERRIDE;
FrameOffset CurrentParamStackOffset() OVERRIDE;
// x86 needs to extend small return types.
bool RequiresSmallResultTypeExtension() const OVERRIDE {
return true;
}
protected:
size_t NumberOfOutgoingStackArgs() OVERRIDE;
private:
// TODO: these values aren't unique and can be shared amongst instances
std::vector<ManagedRegister> callee_save_regs_;
DISALLOW_COPY_AND_ASSIGN(X86JniCallingConvention);
};
} // namespace x86
} // namespace art
#endif // ART_COMPILER_JNI_QUICK_X86_CALLING_CONVENTION_X86_H_
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