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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 "base/enums.h"
#include "jni/quick/calling_convention.h"
namespace art {
namespace x86 {
class X86ManagedRuntimeCallingConvention final : public ManagedRuntimeCallingConvention {
public:
X86ManagedRuntimeCallingConvention(bool is_static, bool is_synchronized, const char* shorty)
: ManagedRuntimeCallingConvention(is_static,
is_synchronized,
shorty,
PointerSize::k32),
gpr_arg_count_(1u) {} // Skip EAX for ArtMethod*
~X86ManagedRuntimeCallingConvention() override {}
// Calling convention
ManagedRegister ReturnRegister() override;
void ResetIterator(FrameOffset displacement) override;
// Managed runtime calling convention
ManagedRegister MethodRegister() override;
void Next() override;
bool IsCurrentParamInRegister() override;
bool IsCurrentParamOnStack() override;
ManagedRegister CurrentParamRegister() override;
FrameOffset CurrentParamStackOffset() override;
private:
int gpr_arg_count_;
DISALLOW_COPY_AND_ASSIGN(X86ManagedRuntimeCallingConvention);
};
// Implements the x86 cdecl calling convention.
class X86JniCallingConvention final : public JniCallingConvention {
public:
X86JniCallingConvention(bool is_static,
bool is_synchronized,
bool is_critical_native,
const char* shorty);
~X86JniCallingConvention() override {}
// Calling convention
ManagedRegister ReturnRegister() override;
ManagedRegister IntReturnRegister() override;
// JNI calling convention
size_t FrameSize() const override;
size_t OutFrameSize() const override;
ArrayRef<const ManagedRegister> CalleeSaveRegisters() const override;
ManagedRegister SavedLocalReferenceCookieRegister() const override;
ManagedRegister ReturnScratchRegister() const override;
uint32_t CoreSpillMask() const override;
uint32_t FpSpillMask() const override;
bool IsCurrentParamInRegister() override;
bool IsCurrentParamOnStack() override;
ManagedRegister CurrentParamRegister() override;
FrameOffset CurrentParamStackOffset() override;
// x86 needs to extend small return types.
bool RequiresSmallResultTypeExtension() const override {
return HasSmallReturnType();
}
// Hidden argument register, used to pass the method pointer for @CriticalNative call.
ManagedRegister HiddenArgumentRegister() const override;
// Whether to use tail call (used only for @CriticalNative).
bool UseTailCall() const override;
private:
DISALLOW_COPY_AND_ASSIGN(X86JniCallingConvention);
};
} // namespace x86
} // namespace art
#endif // ART_COMPILER_JNI_QUICK_X86_CALLING_CONVENTION_X86_H_
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