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/*
* Copyright (C) 2020 Intel Corporation
*
* SPDX-License-Identifier: MIT
*
*/
#pragma once
#include "shared/source/device_binary_format/elf/elf.h"
#include "shared/source/helpers/aligned_memory.h"
#include "shared/source/utilities/arrayref.h"
#include "shared/source/utilities/const_stringref.h"
#include "shared/source/utilities/stackvec.h"
#include <queue>
#include <string>
namespace NEO {
namespace Elf {
template <ELF_IDENTIFIER_CLASS NumBits = EI_CLASS_64>
struct ElfEncoder {
ElfEncoder(bool addUndefSectionHeader = true, bool addHeaderSectionNamesSection = true, uint64_t defaultDataAlignment = 8U);
void appendSection(const ElfSectionHeader<NumBits> §ionHeader, const ArrayRef<const uint8_t> sectionData);
void appendSegment(const ElfProgramHeader<NumBits> &programHeader, const ArrayRef<const uint8_t> segmentData);
ElfSectionHeader<NumBits> &appendSection(SECTION_HEADER_TYPE sectionType, ConstStringRef sectionLabel, const ArrayRef<const uint8_t> sectionData);
ElfProgramHeader<NumBits> &appendSegment(PROGRAM_HEADER_TYPE segmentType, const ArrayRef<const uint8_t> segmentData);
template <typename SectionHeaderEnumT>
ElfSectionHeader<NumBits> &appendSection(SectionHeaderEnumT sectionType, ConstStringRef sectionLabel, const ArrayRef<const uint8_t> sectionData) {
return appendSection(static_cast<SECTION_HEADER_TYPE>(sectionType), sectionLabel, sectionData);
}
template <typename SectionHeaderEnumT>
ElfSectionHeader<NumBits> &appendSection(SectionHeaderEnumT sectionType, ConstStringRef sectionLabel, const std::string §ionData) {
return appendSection(static_cast<SECTION_HEADER_TYPE>(sectionType), sectionLabel,
ArrayRef<const uint8_t>(reinterpret_cast<const uint8_t *>(sectionData.c_str()), sectionData.size() + 1));
}
uint32_t appendSectionName(ConstStringRef str);
std::vector<uint8_t> encode() const;
ElfFileHeader<NumBits> &getElfFileHeader() {
return elfFileHeader;
}
protected:
bool addUndefSectionHeader = false;
bool addHeaderSectionNamesSection = false;
uint64_t defaultDataAlignment = 8U;
uint64_t maxDataAlignmentNeeded = 1U;
ElfFileHeader<NumBits> elfFileHeader;
StackVec<ElfProgramHeader<NumBits>, 32> programHeaders;
StackVec<ElfSectionHeader<NumBits>, 32> sectionHeaders;
std::vector<uint8_t> data;
std::vector<char> stringTable;
struct {
uint32_t shStrTab = 0;
uint32_t undef = 0;
} specialStringsOffsets;
};
extern template struct ElfEncoder<EI_CLASS_32>;
extern template struct ElfEncoder<EI_CLASS_64>;
} // namespace Elf
} // namespace NEO
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