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1 //===- Writer.h -------------------------------------------------*- C++ -*-===//
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2 //
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3 // Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
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4 // See https://llvm.org/LICENSE.txt for license information.
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5 // SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
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6 //
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7 //===----------------------------------------------------------------------===//
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8
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9 #ifndef LLD_ELF_WRITER_H
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10 #define LLD_ELF_WRITER_H
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11
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12 #include "Config.h"
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13 #include "llvm/ADT/ArrayRef.h"
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14 #include "llvm/ADT/StringRef.h"
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15 #include <cstdint>
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16 #include <memory>
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17
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18 namespace lld {
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19 namespace elf {
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20 class InputFile;
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21 class OutputSection;
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22 class InputSectionBase;
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23 void copySectionsIntoPartitions();
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24 template <class ELFT> void createSyntheticSections();
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25 void combineEhSections();
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26 template <class ELFT> void writeResult();
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27
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28 // This describes a program header entry.
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29 // Each contains type, access flags and range of output sections that will be
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30 // placed in it.
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31 struct PhdrEntry {
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32 PhdrEntry(unsigned type, unsigned flags)
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33 : p_align(type == llvm::ELF::PT_LOAD ? config->maxPageSize : 0),
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34 p_type(type), p_flags(flags) {}
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35 void add(OutputSection *sec);
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36
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37 uint64_t p_paddr = 0;
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38 uint64_t p_vaddr = 0;
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39 uint64_t p_memsz = 0;
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40 uint64_t p_filesz = 0;
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41 uint64_t p_offset = 0;
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42 uint32_t p_align = 0;
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43 uint32_t p_type = 0;
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44 uint32_t p_flags = 0;
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45
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46 OutputSection *firstSec = nullptr;
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47 OutputSection *lastSec = nullptr;
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48 bool hasLMA = false;
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49
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50 uint64_t lmaOffset = 0;
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51 };
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52
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53 void addReservedSymbols();
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54 llvm::StringRef getOutputSectionName(const InputSectionBase *s);
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55
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56 template <class ELFT> uint32_t calcMipsEFlags();
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57
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58 uint8_t getMipsFpAbiFlag(uint8_t oldFlag, uint8_t newFlag,
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59 llvm::StringRef fileName);
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60
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61 bool isMipsN32Abi(const InputFile *f);
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62 bool isMicroMips();
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63 bool isMipsR6();
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64 } // namespace elf
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65 } // namespace lld
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66
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67 #endif
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