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