89 lines
2.4 KiB
C++
89 lines
2.4 KiB
C++
/*
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* Copyright (C) 2017-2018 Intel Corporation
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*
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* SPDX-License-Identifier: MIT
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*
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*/
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#pragma once
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#include "types.h"
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#include <queue>
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#include <string>
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namespace CLElfLib {
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struct SSectionNode {
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E_SH_TYPE type = E_SH_TYPE::SH_TYPE_NULL;
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E_SH_FLAG flag = E_SH_FLAG::SH_FLAG_NONE;
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std::string name;
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std::string data;
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uint32_t dataSize = 0u;
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SSectionNode() = default;
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template <typename T1, typename T2>
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SSectionNode(E_SH_TYPE type, E_SH_FLAG flag, T1 &&name, T2 &&data, uint32_t dataSize)
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: type(type), flag(flag), name(std::forward<T1>(name)), data(std::forward<T2>(data)), dataSize(dataSize) {}
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~SSectionNode() = default;
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};
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/******************************************************************************\
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Class: CElfWriter
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Description: Class to provide simpler interaction with the ELF standard
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binary object. SElf64Header defines the ELF header type and
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SElf64SectionHeader defines the section header type.
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\******************************************************************************/
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class CElfWriter {
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public:
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CElfWriter(
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E_EH_TYPE type,
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E_EH_MACHINE machine,
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Elf64_Xword flag) : type(type), machine(machine), flag(flag) {
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addSection(SSectionNode());
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}
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~CElfWriter() {}
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template <typename T>
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void addSection(T &§ionNode) {
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size_t nameSize = 0;
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uint32_t dataSize = 0;
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nameSize = sectionNode.name.size() + 1u;
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dataSize = sectionNode.dataSize;
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// push the node onto the queue
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nodeQueue.push(std::forward<T>(sectionNode));
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// increment the sizes for each section
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this->dataSize += dataSize;
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stringTableSize += nameSize;
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numSections++;
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}
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void resolveBinary(ElfBinaryStorage &binary);
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size_t getTotalBinarySize() {
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return sizeof(SElf64Header) +
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((numSections + 1) * sizeof(SElf64SectionHeader)) + // +1 to account for string table entry
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dataSize + stringTableSize;
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}
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protected:
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E_EH_TYPE type = E_EH_TYPE::EH_TYPE_NONE;
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E_EH_MACHINE machine = E_EH_MACHINE::EH_MACHINE_NONE;
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Elf64_Xword flag = 0U;
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std::queue<SSectionNode> nodeQueue;
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uint32_t dataSize = 0U;
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uint32_t numSections = 0U;
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size_t stringTableSize = 0U;
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void patchElfHeader(SElf64Header &pBinary);
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};
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} // namespace CLElfLib
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