1 //===- WasmReader.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 "WasmReader.h" 10 11 namespace llvm { 12 namespace objcopy { 13 namespace wasm { 14 15 using namespace object; 16 using namespace llvm::wasm; 17 18 Expected<std::unique_ptr<Object>> Reader::create() const { 19 auto Obj = std::make_unique<Object>(); 20 Obj->Header = WasmObj.getHeader(); 21 std::vector<Section> Sections; 22 Obj->Sections.reserve(WasmObj.getNumSections()); 23 for (const SectionRef &Sec : WasmObj.sections()) { 24 const WasmSection &WS = WasmObj.getWasmSection(Sec); 25 Obj->Sections.push_back( 26 {static_cast<uint8_t>(WS.Type), WS.Name, WS.Content}); 27 // Give known sections standard names to allow them to be selected. 28 Section &ReaderSec = Obj->Sections.back(); 29 if (ReaderSec.SectionType > WASM_SEC_CUSTOM && 30 ReaderSec.SectionType <= WASM_SEC_TAG) 31 ReaderSec.Name = sectionTypeToString(ReaderSec.SectionType); 32 // If the section type is CUSTOM, it has a name already. If it's a new type 33 // of section that we don't explicitly handle here, it will have an empty 34 // name and objcopy won't be able to select it by name (e.g. for removal 35 // or dumping) but it will still be valid and able to be copied. 36 } 37 return std::move(Obj); 38 } 39 40 } // end namespace wasm 41 } // end namespace objcopy 42 } // end namespace llvm 43