1//===- InputSection.cpp ---------------------------------------------------===// 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#include "InputSection.h" 10#include "OutputSegment.h" 11#include "Symbols.h" 12#include "Target.h" 13#include "lld/Common/Memory.h" 14#include "llvm/Support/Endian.h" 15 16using namespace llvm; 17using namespace llvm::MachO; 18using namespace llvm::support; 19using namespace lld; 20using namespace lld::macho; 21 22std::vector<InputSection *> macho::inputSections; 23 24uint64_t InputSection::getFileOffset() const { 25 return parent->fileOff + outSecFileOff; 26} 27 28uint64_t InputSection::getVA() const { return parent->addr + outSecOff; } 29 30void InputSection::writeTo(uint8_t *buf) { 31 if (getFileSize() == 0) 32 return; 33 34 memcpy(buf, data.data(), data.size()); 35 36 for (Reloc &r : relocs) { 37 uint64_t va = 0; 38 if (auto *s = r.target.dyn_cast<Symbol *>()) 39 va = target->getSymbolVA(*s, r.type); 40 else if (auto *isec = r.target.dyn_cast<InputSection *>()) 41 va = isec->getVA(); 42 43 uint64_t val = va + r.addend; 44 if (r.pcrel) 45 val -= getVA() + r.offset; 46 target->relocateOne(buf + r.offset, r, val); 47 } 48} 49