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/*
* Copyright (C) 2016 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 _LIBUNWINDSTACK_DWARF_EH_FRAME_H
#define _LIBUNWINDSTACK_DWARF_EH_FRAME_H
#include <stdint.h>
#include <unwindstack/DwarfSection.h>
#include <unwindstack/Memory.h>
namespace unwindstack {
template <typename AddressType>
class DwarfEhFrame : public DwarfSectionImpl<AddressType> {
public:
DwarfEhFrame(Memory* memory) : DwarfSectionImpl<AddressType>(memory) {}
virtual ~DwarfEhFrame() = default;
uint64_t GetCieOffsetFromFde32(uint32_t pointer) override {
return this->memory_.cur_offset() - pointer - 4;
}
uint64_t GetCieOffsetFromFde64(uint64_t pointer) override {
return this->memory_.cur_offset() - pointer - 8;
}
uint64_t AdjustPcFromFde(uint64_t pc) override {
// The eh_frame uses relative pcs.
return pc + this->memory_.cur_offset() - 4;
}
};
} // namespace unwindstack
#endif // _LIBUNWINDSTACK_DWARF_EH_FRAME_WITH_HDR_H