/*
* 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 "base/macros.h"
#include "quick/quick_method_frame_info.h"
namespace art HIDDEN {
class ArtMethod;
/**
* 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 .
*/
EXPORT bool CanMethodUseNterp(ArtMethod* method, InstructionSet isa = kRuntimeQuickCodeISA)
REQUIRES_SHARED(Locks::mutator_lock_);
/**
* Returns kAccNterpInvokeFastPathFlag and / or kAccNterpEntryPointFastPathFlag , if appropriate .
*/
uint32_t GetNterpFastPathFlags(std::string_view shorty, uint32_t access_flags, InstructionSet isa);
} // namespace art
#endif // ART_RUNTIME_NTERP_HELPERS_H_
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