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/*
* Copyright (C) 2019 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_RUNTIME_NTERP_HELPERS_H_
#define ART_RUNTIME_NTERP_HELPERS_H_
#include "quick/quick_method_frame_info.h"
namespace art {
class ArtMethod;
/**
* The frame size nterp will use for the given method.
*/
size_t NterpGetFrameSize(ArtMethod* method, InstructionSet isa = kRuntimeISA)
REQUIRES_SHARED(Locks::mutator_lock_);
/**
* Returns the QuickMethodFrameInfo of the given frame corresponding to the
* given method.
*/
QuickMethodFrameInfo NterpFrameInfo(ArtMethod** frame)
REQUIRES_SHARED(Locks::mutator_lock_);
/**
* Returns the dex PC at which the given nterp frame is executing.
*/
uint32_t NterpGetDexPC(ArtMethod** frame)
REQUIRES_SHARED(Locks::mutator_lock_);
/**
* Returns the reference array to be used by the GC to visit references in an
* nterp frame.
*/
uintptr_t NterpGetReferenceArray(ArtMethod** frame)
REQUIRES_SHARED(Locks::mutator_lock_);
/**
* Returns the dex register array to be used by the GC to update references in
* an nterp frame.
*/
uintptr_t NterpGetRegistersArray(ArtMethod** frame)
REQUIRES_SHARED(Locks::mutator_lock_);
/**
* Returns the nterp landing pad for catching an exception.
*/
uintptr_t NterpGetCatchHandler();
/**
* Returns the value of dex register number `vreg` in the given frame.
*/
uint32_t NterpGetVReg(ArtMethod** frame, uint16_t vreg)
REQUIRES_SHARED(Locks::mutator_lock_);
/**
* Returns the value of dex register number `vreg` in the given frame if it is a
* reference. Return 0 otehrwise.
*/
uint32_t NterpGetVRegReference(ArtMethod** frame, uint16_t vreg)
REQUIRES_SHARED(Locks::mutator_lock_);
/**
* Returns whether the given method can run with nterp. The instruction set can
* be passed for cross-compilation.
*/
bool CanMethodUseNterp(ArtMethod* method, InstructionSet isa = kRuntimeISA)
REQUIRES_SHARED(Locks::mutator_lock_);
} // namespace art
#endif // ART_RUNTIME_NTERP_HELPERS_H_
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