forked from OSchip/llvm-project
87 lines
2.9 KiB
C++
87 lines
2.9 KiB
C++
//===- SymbolTable.h --------------------------------------------*- C++ -*-===//
|
|
//
|
|
// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
|
|
// See https://llvm.org/LICENSE.txt for license information.
|
|
// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
|
|
//
|
|
//===----------------------------------------------------------------------===//
|
|
|
|
#ifndef LLD_MACHO_SYMBOL_TABLE_H
|
|
#define LLD_MACHO_SYMBOL_TABLE_H
|
|
|
|
#include "Symbols.h"
|
|
|
|
#include "lld/Common/LLVM.h"
|
|
#include "llvm/ADT/CachedHashString.h"
|
|
#include "llvm/ADT/DenseMap.h"
|
|
#include "llvm/Object/Archive.h"
|
|
|
|
namespace lld::macho {
|
|
|
|
class ArchiveFile;
|
|
class DylibFile;
|
|
class InputFile;
|
|
class ObjFile;
|
|
class InputSection;
|
|
class MachHeaderSection;
|
|
class Symbol;
|
|
class Defined;
|
|
class Undefined;
|
|
|
|
/*
|
|
* Note that the SymbolTable handles name collisions by calling
|
|
* replaceSymbol(), which does an in-place update of the Symbol via `placement
|
|
* new`. Therefore, there is no need to update any relocations that hold
|
|
* pointers the "old" Symbol -- they will automatically point to the new one.
|
|
*/
|
|
class SymbolTable {
|
|
public:
|
|
Defined *addDefined(StringRef name, InputFile *, InputSection *,
|
|
uint64_t value, uint64_t size, bool isWeakDef,
|
|
bool isPrivateExtern, bool isThumb,
|
|
bool isReferencedDynamically, bool noDeadStrip,
|
|
bool isWeakDefCanBeHidden);
|
|
|
|
Defined *aliasDefined(Defined *src, StringRef target, InputFile *newFile,
|
|
bool makePrivateExtern = false);
|
|
|
|
Symbol *addUndefined(StringRef name, InputFile *, bool isWeakRef);
|
|
|
|
Symbol *addCommon(StringRef name, InputFile *, uint64_t size, uint32_t align,
|
|
bool isPrivateExtern);
|
|
|
|
Symbol *addDylib(StringRef name, DylibFile *file, bool isWeakDef, bool isTlv);
|
|
Symbol *addDynamicLookup(StringRef name);
|
|
|
|
Symbol *addLazyArchive(StringRef name, ArchiveFile *file,
|
|
const llvm::object::Archive::Symbol &sym);
|
|
Symbol *addLazyObject(StringRef name, InputFile &file);
|
|
|
|
Defined *addSynthetic(StringRef name, InputSection *, uint64_t value,
|
|
bool isPrivateExtern, bool includeInSymtab,
|
|
bool referencedDynamically);
|
|
|
|
ArrayRef<Symbol *> getSymbols() const { return symVector; }
|
|
Symbol *find(llvm::CachedHashStringRef name);
|
|
Symbol *find(StringRef name) { return find(llvm::CachedHashStringRef(name)); }
|
|
|
|
private:
|
|
std::pair<Symbol *, bool> insert(StringRef name, const InputFile *);
|
|
llvm::DenseMap<llvm::CachedHashStringRef, int> symMap;
|
|
std::vector<Symbol *> symVector;
|
|
};
|
|
|
|
void reportPendingUndefinedSymbols();
|
|
void reportPendingDuplicateSymbols();
|
|
|
|
// Call reportPendingUndefinedSymbols() to emit diagnostics.
|
|
void treatUndefinedSymbol(const Undefined &, StringRef source);
|
|
void treatUndefinedSymbol(const Undefined &, const InputSection *,
|
|
uint64_t offset);
|
|
|
|
extern std::unique_ptr<SymbolTable> symtab;
|
|
|
|
} // namespace lld::macho
|
|
|
|
#endif
|