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
21namespace lld::coff {
22class COFFLinkerContext;
23
24// Logic for deciding what symbols to export, when exporting all
25// symbols for MinGW.
26class AutoExporter {
27public:
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
44private:
45 SymbolTable &symtab;
46};
47
48void 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//
58void addWrappedSymbols(SymbolTable &symtab, llvm::opt::InputArgList &args);
59
60void wrapSymbols(SymbolTable &symtab);
61
62} // namespace lld::coff
63
64#endif
65