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 { 32 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 55 template <class ELFT> uint32_t calcMipsEFlags(); 56 57 uint8_t getMipsFpAbiFlag(uint8_t oldFlag, uint8_t newFlag, 58 llvm::StringRef fileName); 59 60 bool isMipsN32Abi(const InputFile *f); 61 bool isMicroMips(); 62 bool isMipsR6(); 63 } // namespace elf 64 } // namespace lld 65 66 #endif 67