e4e673e75a
* Implement rebase opcodes. Rebase opcodes tell dyld where absolute addresses have been encoded in the binary. If the binary is not loaded at its preferred address, dyld has to rebase these addresses by adding an offset to them. * Support `-pie` and use it to test rebase opcodes. This is necessary for absolute address references in dylibs, bundles etc to work. Reviewed By: #lld-macho, gkm Differential Revision: https://reviews.llvm.org/D87199
75 lines
2.3 KiB
C++
75 lines
2.3 KiB
C++
//===- Config.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_CONFIG_H
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#define LLD_MACHO_CONFIG_H
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#include "llvm/ADT/DenseMap.h"
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#include "llvm/ADT/StringRef.h"
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#include "llvm/BinaryFormat/MachO.h"
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#include "llvm/Support/VersionTuple.h"
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#include "llvm/TextAPI/MachO/Architecture.h"
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#include "llvm/TextAPI/MachO/Platform.h"
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#include <vector>
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namespace lld {
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namespace macho {
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class Symbol;
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struct SymbolPriorityEntry;
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struct PlatformInfo {
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llvm::MachO::PlatformKind kind;
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llvm::VersionTuple minimum;
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llvm::VersionTuple sdk;
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};
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struct Configuration {
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Symbol *entry;
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bool hasReexports = false;
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bool allLoad = false;
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bool forceLoadObjC = false;
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bool staticLink = false;
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bool isPic = false;
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bool headerPadMaxInstallNames = false;
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bool searchDylibsFirst = false;
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uint32_t headerPad;
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llvm::StringRef installName;
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llvm::StringRef outputFile;
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llvm::MachO::Architecture arch;
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PlatformInfo platform;
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llvm::MachO::HeaderFileType outputType;
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std::vector<llvm::StringRef> systemLibraryRoots;
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std::vector<llvm::StringRef> librarySearchPaths;
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std::vector<llvm::StringRef> frameworkSearchPaths;
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std::vector<llvm::StringRef> runtimePaths;
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llvm::DenseMap<llvm::StringRef, SymbolPriorityEntry> priorities;
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};
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// The symbol with the highest priority should be ordered first in the output
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// section (modulo input section contiguity constraints). Using priority
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// (highest first) instead of order (lowest first) has the convenient property
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// that the default-constructed zero priority -- for symbols/sections without a
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// user-defined order -- naturally ends up putting them at the end of the
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// output.
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struct SymbolPriorityEntry {
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// The priority given to a matching symbol, regardless of which object file
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// it originated from.
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size_t anyObjectFile = 0;
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// The priority given to a matching symbol from a particular object file.
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llvm::DenseMap<llvm::StringRef, size_t> objectFiles;
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};
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extern Configuration *config;
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} // namespace macho
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} // namespace lld
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#endif
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