1 //===- MinGW.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_COFF_MINGW_H 10 #define LLD_COFF_MINGW_H 11 12 #include "Config.h" 13 #include "Symbols.h" 14 #include "lld/Common/LLVM.h" 15 #include "llvm/ADT/ArrayRef.h" 16 #include "llvm/ADT/StringSet.h" 17 #include "llvm/Option/ArgList.h" 18 #include <vector> 19 20 namespace lld { 21 namespace coff { 22 23 // Logic for deciding what symbols to export, when exporting all 24 // symbols for MinGW. 25 class AutoExporter { 26 public: 27 AutoExporter(); 28 29 void addWholeArchive(StringRef path); 30 31 llvm::StringSet<> excludeSymbols; 32 llvm::StringSet<> excludeSymbolPrefixes; 33 llvm::StringSet<> excludeSymbolSuffixes; 34 llvm::StringSet<> excludeLibs; 35 llvm::StringSet<> excludeObjects; 36 37 bool shouldExport(Defined *sym) const; 38 }; 39 40 void writeDefFile(StringRef name); 41 42 // The -wrap option is a feature to rename symbols so that you can write 43 // wrappers for existing functions. If you pass `-wrap:foo`, all 44 // occurrences of symbol `foo` are resolved to `__wrap_foo` (so, you are 45 // expected to write `__wrap_foo` function as a wrapper). The original 46 // symbol becomes accessible as `__real_foo`, so you can call that from your 47 // wrapper. 48 // 49 // This data structure is instantiated for each -wrap option. 50 struct WrappedSymbol { 51 Symbol *sym; 52 Symbol *real; 53 Symbol *wrap; 54 }; 55 56 std::vector<WrappedSymbol> addWrappedSymbols(llvm::opt::InputArgList &args); 57 58 void wrapSymbols(ArrayRef<WrappedSymbol> wrapped); 59 60 } // namespace coff 61 } // namespace lld 62 63 #endif 64