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1 //===- Writer.h -------------------------------------------------*- C++ -*-===//
2 //
3 // Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
4 // See https://llvm.org/LICENSE.txt for license information.
5 // SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
6 //
7 //===----------------------------------------------------------------------===//
8 
9 #ifndef LLD_ELF_WRITER_H
10 #define LLD_ELF_WRITER_H
11 
12 #include "Config.h"
13 #include "llvm/ADT/ArrayRef.h"
14 #include "llvm/ADT/StringRef.h"
15 #include <cstdint>
16 #include <memory>
17 
18 namespace lld {
19 namespace elf {
20 class InputFile;
21 class OutputSection;
22 class InputSectionBase;
23 void copySectionsIntoPartitions();
24 template <class ELFT> void createSyntheticSections();
25 void combineEhSections();
26 template <class ELFT> void writeResult();
27 
28 // This describes a program header entry.
29 // Each contains type, access flags and range of output sections that will be
30 // placed in it.
31 struct PhdrEntry {
PhdrEntryPhdrEntry32   PhdrEntry(unsigned type, unsigned flags)
33       : p_align(type == llvm::ELF::PT_LOAD ? config->maxPageSize : 0),
34         p_type(type), p_flags(flags) {}
35   void add(OutputSection *sec);
36 
37   uint64_t p_paddr = 0;
38   uint64_t p_vaddr = 0;
39   uint64_t p_memsz = 0;
40   uint64_t p_filesz = 0;
41   uint64_t p_offset = 0;
42   uint32_t p_align = 0;
43   uint32_t p_type = 0;
44   uint32_t p_flags = 0;
45 
46   OutputSection *firstSec = nullptr;
47   OutputSection *lastSec = nullptr;
48   bool hasLMA = false;
49 
50   uint64_t lmaOffset = 0;
51 };
52 
53 void addReservedSymbols();
54 llvm::StringRef getOutputSectionName(const InputSectionBase *s);
55 
56 template <class ELFT> uint32_t calcMipsEFlags();
57 
58 uint8_t getMipsFpAbiFlag(uint8_t oldFlag, uint8_t newFlag,
59                          llvm::StringRef fileName);
60 
61 bool isMipsN32Abi(const InputFile *f);
62 bool isMicroMips();
63 bool isMipsR6();
64 } // namespace elf
65 } // namespace lld
66 
67 #endif
68