1 //===-- COFFDirectiveParser.cpp - JITLink coff directive parser --*- 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 // MSVC COFF directive parser 10 // 11 //===----------------------------------------------------------------------===// 12 13 #include "COFFDirectiveParser.h" 14 15 using namespace llvm; 16 using namespace jitlink; 17 18 #define DEBUG_TYPE "jitlink" 19 20 #define OPTTABLE_STR_TABLE_CODE 21 #include "COFFOptions.inc" 22 #undef OPTTABLE_STR_TABLE_CODE 23 24 #define OPTTABLE_PREFIXES_TABLE_CODE 25 #include "COFFOptions.inc" 26 #undef OPTTABLE_PREFIXES_TABLE_CODE 27 28 #define OPTTABLE_PREFIXES_UNION_CODE 29 #include "COFFOptions.inc" 30 #undef OPTTABLE_PREFIXES_UNION_CODE 31 32 // Create table mapping all options defined in COFFOptions.td 33 using namespace llvm::opt; 34 static constexpr opt::OptTable::Info infoTable[] = { 35 #define OPTION(...) \ 36 LLVM_CONSTRUCT_OPT_INFO_WITH_ID_PREFIX(COFF_OPT_, __VA_ARGS__), 37 #include "COFFOptions.inc" 38 #undef OPTION 39 }; 40 41 class COFFOptTable : public opt::PrecomputedOptTable { 42 public: 43 COFFOptTable() 44 : PrecomputedOptTable(OptionStrTable, OptionPrefixesTable, infoTable, 45 OptionPrefixesUnion, true) {} 46 }; 47 48 static COFFOptTable optTable; 49 50 Expected<opt::InputArgList> COFFDirectiveParser::parse(StringRef Str) { 51 SmallVector<StringRef, 16> Tokens; 52 SmallVector<const char *, 16> Buffer; 53 cl::TokenizeWindowsCommandLineNoCopy(Str, saver, Tokens); 54 for (StringRef Tok : Tokens) { 55 bool HasNul = Tok.end() != Str.end() && Tok.data()[Tok.size()] == '\0'; 56 Buffer.push_back(HasNul ? Tok.data() : saver.save(Tok).data()); 57 } 58 59 unsigned missingIndex; 60 unsigned missingCount; 61 62 auto Result = optTable.ParseArgs(Buffer, missingIndex, missingCount); 63 64 if (missingCount) 65 return make_error<JITLinkError>(Twine("COFF directive parsing failed: ") + 66 Result.getArgString(missingIndex) + 67 " missing argument"); 68 LLVM_DEBUG({ 69 for (auto *arg : Result.filtered(COFF_OPT_UNKNOWN)) 70 dbgs() << "Unknown coff option argument: " << arg->getAsString(Result) 71 << "\n"; 72 }); 73 return std::move(Result); 74 } 75