53 lines · cpp
1//===--------- SectCreate.cpp - Emulate ld64's -sectcreate option ---------===//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-exception6//7//===----------------------------------------------------------------------===//8 9#include "llvm/ExecutionEngine/Orc/SectCreate.h"10 11#define DEBUG_TYPE "orc"12 13using namespace llvm::jitlink;14 15namespace llvm::orc {16 17void SectCreateMaterializationUnit::materialize(18 std::unique_ptr<MaterializationResponsibility> R) {19 auto G = std::make_unique<LinkGraph>(20 "orc_sectcreate_" + SectName,21 ObjLinkingLayer.getExecutionSession().getSymbolStringPool(),22 ObjLinkingLayer.getExecutionSession().getTargetTriple(),23 SubtargetFeatures(), getGenericEdgeKindName);24 25 auto &Sect = G->createSection(SectName, MP);26 auto Content = G->allocateContent(ArrayRef<char>(Data->getBuffer()));27 auto &B = G->createContentBlock(Sect, Content, ExecutorAddr(), Alignment, 0);28 29 for (auto &[Name, Info] : ExtraSymbols) {30 auto L = Info.Flags.isStrong() ? Linkage::Strong : Linkage::Weak;31 auto S = Info.Flags.isExported() ? Scope::Default : Scope::Hidden;32 G->addDefinedSymbol(B, Info.Offset, *Name, 0, L, S, Info.Flags.isCallable(),33 true);34 }35 36 ObjLinkingLayer.emit(std::move(R), std::move(G));37}38 39void SectCreateMaterializationUnit::discard(const JITDylib &JD,40 const SymbolStringPtr &Name) {41 ExtraSymbols.erase(Name);42}43 44MaterializationUnit::Interface SectCreateMaterializationUnit::getInterface(45 const ExtraSymbolsMap &ExtraSymbols) {46 SymbolFlagsMap SymbolFlags;47 for (auto &[Name, Info] : ExtraSymbols)48 SymbolFlags[Name] = Info.Flags;49 return {std::move(SymbolFlags), nullptr};50}51 52} // End namespace llvm::orc.53