mirror of
https://github.com/lief-project/LIEF
synced 2026-06-08 15:30:44 +00:00
Romain Thomas
117 lines
3.3 KiB
C++
117 lines
3.3 KiB
C++
/* Copyright 2017 - 2026 R. Thomas
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* Copyright 2017 - 2026 Quarkslab
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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 LIEF_MACHO_RELOCATION_OBJECT_COMMAND_H
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#define LIEF_MACHO_RELOCATION_OBJECT_COMMAND_H
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#include <ostream>
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#include "LIEF/visibility.h"
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#include "LIEF/MachO/Relocation.hpp"
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namespace LIEF {
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namespace MachO {
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class BinaryParser;
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namespace details {
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struct relocation_info;
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struct scattered_relocation_info;
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}
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/// Class that represents a relocation presents in the MachO object
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/// file (``.o``). Usually, this kind of relocation is found in the MachO::Section
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///
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/// @see RelocationDyld
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class LIEF_API RelocationObject : public Relocation {
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friend class BinaryParser;
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public:
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using Relocation::Relocation;
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RelocationObject() = default;
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RelocationObject(const details::relocation_info& relocinfo);
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RelocationObject(const details::scattered_relocation_info& scattered_relocinfo);
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RelocationObject& operator=(const RelocationObject& other) = default;
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RelocationObject(const RelocationObject& other) = default;
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void swap(RelocationObject& other) noexcept;
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~RelocationObject() override = default;
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std::unique_ptr<Relocation> clone() const override {
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return std::unique_ptr<RelocationObject>(new RelocationObject(*this));
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}
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/// Whether the relocation is PC relative
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bool is_pc_relative() const override {
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return is_pcrel_;
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}
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/// Size of the relocation
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size_t size() const override;
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/// Address where the relocation is applied
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/// This address is relative to the start of the section where the relocation takes place
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uint64_t address() const override;
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/// ``true`` if the relocation is a scattered one
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bool is_scattered() const {
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return is_scattered_;
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}
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/// For **scattered** relocations:
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/// The address of the relocatable expression for the item in the file that needs
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/// to be updated if the address is changed.
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///
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/// For relocatable expressions with the difference of two section addresses,
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/// the address from which to subtract (in mathematical terms, the minuend)
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/// is contained in the first relocation entry and the address to subtract (the subtrahend)
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/// is contained in the second relocation entry.
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int32_t value() const;
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/// Origin of the relocation. For this object it should be Relocation::ORIGIN::RELOC_TABLE)
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ORIGIN origin() const override {
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return ORIGIN::RELOC_TABLE;
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}
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void pc_relative(bool val) override {
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is_pcrel_ = val;
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}
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void size(size_t size) override;
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void value(int32_t value);
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void accept(Visitor& visitor) const override;
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std::ostream& print(std::ostream& os) const override {
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return Relocation::print(os);
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}
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static bool classof(const Relocation& r) {
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return r.origin() == Relocation::ORIGIN::RELOC_TABLE;
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}
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private:
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bool is_pcrel_ = false;
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bool is_scattered_ = false;
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int32_t value_ = 0;
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};
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}
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}
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#endif
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