c07e838130
This flag acts just like the existing `--features` flag but instead of replacing the set of inferred features it adds to it. This is useful for example if you want to `--export` a mutable global but none of the input of object were built with mutable global support. In that case you can do `--extra-features=mutable-globals` to avoid the linker error that would otherwise be generated in this case: wasm-ld: error: mutable global exported but 'mutable-globals' feature not present in inputs: `__stack_pointer`. Use --no-check-features to suppress. Differential Revision: https://reviews.llvm.org/D135831
110 lines
3.1 KiB
C++
110 lines
3.1 KiB
C++
//===- 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"
|
|
|
|
namespace lld {
|
|
namespace wasm {
|
|
|
|
// For --unresolved-symbols.
|
|
enum class UnresolvedPolicy { ReportError, Warn, Ignore, ImportDynamic };
|
|
|
|
// 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;
|
|
bool importMemory;
|
|
bool sharedMemory;
|
|
bool importTable;
|
|
bool importUndefined;
|
|
llvm::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 initialMemory;
|
|
uint64_t maxMemory;
|
|
uint64_t zStackSize;
|
|
unsigned ltoPartitions;
|
|
unsigned ltoo;
|
|
unsigned optimize;
|
|
llvm::StringRef thinLTOJobs;
|
|
bool ltoDebugPassManager;
|
|
UnresolvedPolicy unresolvedSymbols;
|
|
|
|
llvm::StringRef entry;
|
|
llvm::StringRef mapFile;
|
|
llvm::StringRef outputFile;
|
|
llvm::StringRef thinLTOCacheDir;
|
|
|
|
llvm::StringSet<> allowUndefinedSymbols;
|
|
llvm::StringSet<> exportedSymbols;
|
|
std::vector<llvm::StringRef> requiredExports;
|
|
llvm::SmallVector<llvm::StringRef, 0> searchPaths;
|
|
llvm::CachePruningPolicy thinLTOCachePolicy;
|
|
llvm::Optional<std::vector<std::string>> features;
|
|
llvm::Optional<std::vector<std::string>> extraFeatures;
|
|
|
|
// The following config options do not directly correspond to any
|
|
// particular command line options.
|
|
|
|
// True if we are creating position-independent code.
|
|
bool isPic;
|
|
|
|
// 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;
|
|
|
|
// 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).
|
|
uint32_t tableBase = 0;
|
|
|
|
// Will be set to true if bss data segments should be emitted. In most cases
|
|
// this is not necessary.
|
|
bool emitBssSegments = false;
|
|
};
|
|
|
|
// The only instance of Configuration struct.
|
|
extern Configuration *config;
|
|
|
|
} // namespace wasm
|
|
} // namespace lld
|
|
|
|
#endif
|