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/StringRef.h" 14 #include <cstdint> 15 16 namespace lld { 17 namespace elf { 18 class InputFile; 19 class OutputSection; 20 void copySectionsIntoPartitions(); 21 template <class ELFT> void createSyntheticSections(); 22 void combineEhSections(); 23 template <class ELFT> void writeResult(); 24 25 // This describes a program header entry. 26 // Each contains type, access flags and range of output sections that will be 27 // placed in it. 28 struct PhdrEntry { 29 PhdrEntry(unsigned type, unsigned flags) 30 : p_align(type == llvm::ELF::PT_LOAD ? config->maxPageSize : 0), 31 p_type(type), p_flags(flags) {} 32 void add(OutputSection *sec); 33 34 uint64_t p_paddr = 0; 35 uint64_t p_vaddr = 0; 36 uint64_t p_memsz = 0; 37 uint64_t p_filesz = 0; 38 uint64_t p_offset = 0; 39 uint32_t p_align = 0; 40 uint32_t p_type = 0; 41 uint32_t p_flags = 0; 42 43 OutputSection *firstSec = nullptr; 44 OutputSection *lastSec = nullptr; 45 bool hasLMA = false; 46 47 uint64_t lmaOffset = 0; 48 }; 49 50 void addReservedSymbols(); 51 52 template <class ELFT> uint32_t calcMipsEFlags(); 53 54 uint8_t getMipsFpAbiFlag(uint8_t oldFlag, uint8_t newFlag, 55 llvm::StringRef fileName); 56 57 bool isMipsN32Abi(const InputFile *f); 58 bool isMicroMips(); 59 bool isMipsR6(); 60 } // namespace elf 61 } // namespace lld 62 63 #endif 64