130 lines
3.8 KiB
C++
130 lines
3.8 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_WASM_CONFIG_H
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#define LLD_WASM_CONFIG_H
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#include "llvm/ADT/SmallVector.h"
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#include "llvm/ADT/StringRef.h"
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#include "llvm/ADT/StringSet.h"
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#include "llvm/BinaryFormat/Wasm.h"
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#include "llvm/Support/CachePruning.h"
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#include <optional>
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namespace llvm::CodeGenOpt {
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enum Level : int;
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} // namespace llvm::CodeGenOpt
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namespace lld::wasm {
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class InputFile;
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class Symbol;
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// For --unresolved-symbols.
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enum class UnresolvedPolicy { ReportError, Warn, Ignore, ImportDynamic };
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// For --build-id.
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enum class BuildIdKind { None, Fast, Sha1, Hexstring, Uuid };
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// This struct contains the global configuration for the linker.
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// Most fields are direct mapping from the command line options
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// and such fields have the same name as the corresponding options.
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// Most fields are initialized by the driver.
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struct Configuration {
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bool bsymbolic;
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bool checkFeatures;
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bool compressRelocations;
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bool demangle;
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bool disableVerify;
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bool experimentalPic;
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bool emitRelocs;
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bool exportAll;
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bool exportDynamic;
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bool exportTable;
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bool extendedConst;
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bool growableTable;
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bool gcSections;
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std::optional<std::pair<llvm::StringRef, llvm::StringRef>> memoryImport;
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std::optional<llvm::StringRef> memoryExport;
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bool sharedMemory;
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bool importTable;
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bool importUndefined;
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std::optional<bool> is64;
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bool mergeDataSegments;
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bool pie;
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bool printGcSections;
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bool relocatable;
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bool saveTemps;
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bool shared;
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bool stripAll;
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bool stripDebug;
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bool stackFirst;
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bool isStatic = false;
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bool trace;
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uint64_t globalBase;
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uint64_t initialMemory;
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uint64_t maxMemory;
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uint64_t zStackSize;
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unsigned ltoPartitions;
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unsigned ltoo;
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llvm::CodeGenOpt::Level ltoCgo;
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unsigned optimize;
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llvm::StringRef thinLTOJobs;
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bool ltoDebugPassManager;
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UnresolvedPolicy unresolvedSymbols;
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BuildIdKind buildId = BuildIdKind::None;
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llvm::StringRef entry;
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llvm::StringRef mapFile;
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llvm::StringRef outputFile;
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llvm::StringRef thinLTOCacheDir;
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llvm::StringRef whyExtract;
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llvm::StringSet<> allowUndefinedSymbols;
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llvm::StringSet<> exportedSymbols;
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std::vector<llvm::StringRef> requiredExports;
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llvm::SmallVector<llvm::StringRef, 0> searchPaths;
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llvm::CachePruningPolicy thinLTOCachePolicy;
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std::optional<std::vector<std::string>> features;
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std::optional<std::vector<std::string>> extraFeatures;
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llvm::SmallVector<uint8_t, 0> buildIdVector;
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// The following config options do not directly correspond to any
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// particular command line options, and should probably be moved to seperate
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// Ctx struct as in ELF/Config.h
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// True if we are creating position-independent code.
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bool isPic;
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// True if we have an MVP input that uses __indirect_function_table and which
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// requires it to be allocated to table number 0.
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bool legacyFunctionTable = false;
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// The table offset at which to place function addresses. We reserve zero
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// for the null function pointer. This gets set to 1 for executables and 0
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// for shared libraries (since they always added to a dynamic offset at
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// runtime).
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uint32_t tableBase = 0;
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// Will be set to true if bss data segments should be emitted. In most cases
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// this is not necessary.
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bool emitBssSegments = false;
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// A tuple of (reference, extractedFile, sym). Used by --why-extract=.
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llvm::SmallVector<std::tuple<std::string, const InputFile *, const Symbol &>,
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0>
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whyExtractRecords;
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};
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// The only instance of Configuration struct.
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extern Configuration *config;
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} // namespace lld::wasm
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#endif
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