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/*
* Copyright (C) 2015 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_DEX2OAT_LINKER_ARM_RELATIVE_PATCHER_THUMB2_H_
#define ART_DEX2OAT_LINKER_ARM_RELATIVE_PATCHER_THUMB2_H_
#include "arch/arm/registers_arm.h"
#include "base/array_ref.h"
#include "linker/arm/relative_patcher_arm_base.h"
namespace art {
namespace linker {
class Thumb2RelativePatcher final : public ArmBaseRelativePatcher {
public:
explicit Thumb2RelativePatcher(RelativePatcherThunkProvider* thunk_provider,
RelativePatcherTargetProvider* target_provider);
void PatchCall(std::vector<uint8_t>* code,
uint32_t literal_offset,
uint32_t patch_offset,
uint32_t target_offset) override;
void PatchPcRelativeReference(std::vector<uint8_t>* code,
const LinkerPatch& patch,
uint32_t patch_offset,
uint32_t target_offset) override;
void PatchEntrypointCall(std::vector<uint8_t>* code,
const LinkerPatch& patch,
uint32_t patch_offset) override;
void PatchBakerReadBarrierBranch(std::vector<uint8_t>* code,
const LinkerPatch& patch,
uint32_t patch_offset) override;
protected:
uint32_t MaxPositiveDisplacement(const ThunkKey& key) override;
uint32_t MaxNegativeDisplacement(const ThunkKey& key) override;
private:
static void PatchBl(std::vector<uint8_t>* code, uint32_t literal_offset, uint32_t displacement);
static void SetInsn32(std::vector<uint8_t>* code, uint32_t offset, uint32_t value);
static uint32_t GetInsn32(ArrayRef<const uint8_t> code, uint32_t offset);
template <typename Vector>
static uint32_t GetInsn32(Vector* code, uint32_t offset);
static uint32_t GetInsn16(ArrayRef<const uint8_t> code, uint32_t offset);
template <typename Vector>
static uint32_t GetInsn16(Vector* code, uint32_t offset);
friend class Thumb2RelativePatcherTest;
DISALLOW_COPY_AND_ASSIGN(Thumb2RelativePatcher);
};
} // namespace linker
} // namespace art
#endif // ART_DEX2OAT_LINKER_ARM_RELATIVE_PATCHER_THUMB2_H_
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