8e44f037dc
This change writes the module name to the name section of the wasm binary. We use the `-soname` argument to determine the name and we default the output file basename if this option is not specified. In the future we will likely want to embed the soname in the dylink section too, but this the first step in supporting `-soname`. Differential Revision: https://reviews.llvm.org/D158001
131 lines
3.8 KiB
C++
131 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 soName;
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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 separate
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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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