| 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/DenseSet.h" |
|---|
| 17 | #include "llvm/ADT/StringSet.h" |
|---|
| 18 | #include "llvm/Option/ArgList.h" |
|---|
| 19 | #include <vector> |
|---|
| 20 | |
|---|
| 21 | namespace lld::coff { |
|---|
| 22 | class COFFLinkerContext; |
|---|
| 23 | |
|---|
| 24 | // Logic for deciding what symbols to export, when exporting all |
|---|
| 25 | // symbols for MinGW. |
|---|
| 26 | class AutoExporter { |
|---|
| 27 | public: |
|---|
| 28 | AutoExporter(SymbolTable &symtab, |
|---|
| 29 | const llvm::DenseSet<StringRef> &manualExcludeSymbols); |
|---|
| 30 | |
|---|
| 31 | void addWholeArchive(StringRef path); |
|---|
| 32 | void addExcludedSymbol(StringRef symbol); |
|---|
| 33 | |
|---|
| 34 | llvm::StringSet<> excludeSymbols; |
|---|
| 35 | llvm::StringSet<> excludeSymbolPrefixes; |
|---|
| 36 | llvm::StringSet<> excludeSymbolSuffixes; |
|---|
| 37 | llvm::StringSet<> excludeLibs; |
|---|
| 38 | llvm::StringSet<> excludeObjects; |
|---|
| 39 | |
|---|
| 40 | const llvm::DenseSet<StringRef> &manualExcludeSymbols; |
|---|
| 41 | |
|---|
| 42 | bool shouldExport(Defined *sym) const; |
|---|
| 43 | |
|---|
| 44 | private: |
|---|
| 45 | SymbolTable &symtab; |
|---|
| 46 | }; |
|---|
| 47 | |
|---|
| 48 | void writeDefFile(COFFLinkerContext &, StringRef name, |
|---|
| 49 | const std::vector<Export> &exports); |
|---|
| 50 | |
|---|
| 51 | // The -wrap option is a feature to rename symbols so that you can write |
|---|
| 52 | // wrappers for existing functions. If you pass `-wrap:foo`, all |
|---|
| 53 | // occurrences of symbol `foo` are resolved to `__wrap_foo` (so, you are |
|---|
| 54 | // expected to write `__wrap_foo` function as a wrapper). The original |
|---|
| 55 | // symbol becomes accessible as `__real_foo`, so you can call that from your |
|---|
| 56 | // wrapper. |
|---|
| 57 | // |
|---|
| 58 | void addWrappedSymbols(SymbolTable &symtab, llvm::opt::InputArgList &args); |
|---|
| 59 | |
|---|
| 60 | void wrapSymbols(SymbolTable &symtab); |
|---|
| 61 | |
|---|
| 62 | } // namespace lld::coff |
|---|
| 63 | |
|---|
| 64 | #endif |
|---|
| 65 | |
|---|
