/* * 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_H