163dcd8513
This makes our error messages more informative. But the bigger motivation is for LTO symbol resolution, which will be in an upcoming diff. The changes in this one are largely mechanical. Reviewed By: #lld-macho, smeenai Differential Revision: https://reviews.llvm.org/D94316
69 lines
2.0 KiB
C++
69 lines
2.0 KiB
C++
//===- SymbolTable.h --------------------------------------------*- C++ -*-===//
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//
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// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
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// See https://llvm.org/LICENSE.txt for license information.
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// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
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//
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//===----------------------------------------------------------------------===//
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#ifndef LLD_MACHO_SYMBOL_TABLE_H
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#define LLD_MACHO_SYMBOL_TABLE_H
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#include "lld/Common/LLVM.h"
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#include "llvm/ADT/CachedHashString.h"
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#include "llvm/ADT/DenseMap.h"
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#include "llvm/Object/Archive.h"
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namespace lld {
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namespace macho {
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class ArchiveFile;
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class DylibFile;
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class InputFile;
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class ObjFile;
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class InputSection;
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class MachHeaderSection;
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class Symbol;
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class Undefined;
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/*
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* Note that the SymbolTable handles name collisions by calling
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* replaceSymbol(), which does an in-place update of the Symbol via `placement
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* new`. Therefore, there is no need to update any relocations that hold
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* pointers the "old" Symbol -- they will automatically point to the new one.
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*/
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class SymbolTable {
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public:
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Symbol *addDefined(StringRef name, InputFile *, InputSection *,
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uint32_t value, bool isWeakDef, bool isPrivateExtern);
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Symbol *addUndefined(StringRef name, InputFile *, bool isWeakRef);
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Symbol *addCommon(StringRef name, InputFile *, uint64_t size, uint32_t align,
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bool isPrivateExtern);
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Symbol *addDylib(StringRef name, DylibFile *file, bool isWeakDef, bool isTlv);
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Symbol *addLazy(StringRef name, ArchiveFile *file,
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const llvm::object::Archive::Symbol &sym);
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Symbol *addDSOHandle(const MachHeaderSection *);
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ArrayRef<Symbol *> getSymbols() const { return symVector; }
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Symbol *find(StringRef name);
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private:
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std::pair<Symbol *, bool> insert(StringRef name);
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llvm::DenseMap<llvm::CachedHashStringRef, int> symMap;
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std::vector<Symbol *> symVector;
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};
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void treatUndefinedSymbol(const Undefined &);
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extern SymbolTable *symtab;
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} // namespace macho
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} // namespace lld
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#endif
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