50 lines
1.5 KiB
C
50 lines
1.5 KiB
C
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/*
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* Copyright (C) 2016 The Android Open Source Project
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*
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*/
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#ifndef _LIBUNWINDSTACK_DWARF_EH_FRAME_H
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#define _LIBUNWINDSTACK_DWARF_EH_FRAME_H
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#include <stdint.h>
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#include <unwindstack/DwarfSection.h>
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#include <unwindstack/Memory.h>
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namespace unwindstack {
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template <typename AddressType>
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class DwarfEhFrame : public DwarfSectionImpl<AddressType> {
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public:
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DwarfEhFrame(Memory* memory) : DwarfSectionImpl<AddressType>(memory) {}
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virtual ~DwarfEhFrame() = default;
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uint64_t GetCieOffsetFromFde32(uint32_t pointer) override {
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return this->memory_.cur_offset() - pointer - 4;
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}
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uint64_t GetCieOffsetFromFde64(uint64_t pointer) override {
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return this->memory_.cur_offset() - pointer - 8;
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}
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uint64_t AdjustPcFromFde(uint64_t pc) override {
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// The eh_frame uses relative pcs.
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return pc + this->memory_.cur_offset() - 4;
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}
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};
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} // namespace unwindstack
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#endif // _LIBUNWINDSTACK_DWARF_EH_FRAME_H
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