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::elf { 17 class InputFile; 18 class OutputSection; 19 void copySectionsIntoPartitions(); 20 template <class ELFT> void createSyntheticSections(); 21 template <class ELFT> void writeResult(); 22 23 // This describes a program header entry. 24 // Each contains type, access flags and range of output sections that will be 25 // placed in it. 26 struct PhdrEntry { 27 PhdrEntry(unsigned type, unsigned flags) 28 : p_align(type == llvm::ELF::PT_LOAD ? config->maxPageSize : 0), 29 p_type(type), p_flags(flags) {} 30 void add(OutputSection *sec); 31 32 uint64_t p_paddr = 0; 33 uint64_t p_vaddr = 0; 34 uint64_t p_memsz = 0; 35 uint64_t p_filesz = 0; 36 uint64_t p_offset = 0; 37 uint32_t p_align = 0; 38 uint32_t p_type = 0; 39 uint32_t p_flags = 0; 40 41 OutputSection *firstSec = nullptr; 42 OutputSection *lastSec = nullptr; 43 bool hasLMA = false; 44 45 uint64_t lmaOffset = 0; 46 }; 47 48 void addReservedSymbols(); 49 bool includeInSymtab(const Symbol &b); 50 51 template <class ELFT> uint32_t calcMipsEFlags(); 52 53 uint8_t getMipsFpAbiFlag(uint8_t oldFlag, uint8_t newFlag, 54 llvm::StringRef fileName); 55 56 bool isMipsN32Abi(const InputFile *f); 57 bool isMicroMips(); 58 bool isMipsR6(); 59 60 bool hasMemtag(); 61 bool canHaveMemtagGlobals(); 62 } // namespace lld::elf 63 64 #endif 65