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//===------- COFFVCRuntimeSupport.cpp - VC runtime support in ORC ---------===//
//
// 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
//
//===----------------------------------------------------------------------===//
#include "llvm/ExecutionEngine/Orc/COFFVCRuntimeSupport.h"
#include "llvm/ExecutionEngine/Orc/ExecutionUtils.h"
#include "llvm/ExecutionEngine/Orc/LookupAndRecordAddrs.h"
#include "llvm/Support/VirtualFileSystem.h"
#include "llvm/WindowsDriver/MSVCPaths.h"
#define DEBUG_TYPE "orc"
using namespace llvm;
using namespace llvm::orc;
using namespace llvm::orc::shared;
Expected<std::unique_ptr<COFFVCRuntimeBootstrapper>>
COFFVCRuntimeBootstrapper::Create(ExecutionSession &ES,
ObjectLinkingLayer &ObjLinkingLayer,
const char *RuntimePath) {
return std::unique_ptr<COFFVCRuntimeBootstrapper>(
new COFFVCRuntimeBootstrapper(ES, ObjLinkingLayer, RuntimePath));
}
COFFVCRuntimeBootstrapper::COFFVCRuntimeBootstrapper(
ExecutionSession &ES, ObjectLinkingLayer &ObjLinkingLayer,
const char *RuntimePath)
: ES(ES), ObjLinkingLayer(ObjLinkingLayer) {
if (RuntimePath)
this->RuntimePath = RuntimePath;
}
Expected<std::vector<std::string>>
COFFVCRuntimeBootstrapper::loadStaticVCRuntime(JITDylib &JD,
bool DebugVersion) {
StringRef VCLibs[] = {"libvcruntime.lib", "libcmt.lib", "libcpmt.lib"};
StringRef UCRTLibs[] = {"libucrt.lib"};
std::vector<std::string> ImportedLibraries;
if (auto Err = loadVCRuntime(JD, ImportedLibraries, ArrayRef(VCLibs),
ArrayRef(UCRTLibs)))
return std::move(Err);
return ImportedLibraries;
}
Expected<std::vector<std::string>>
COFFVCRuntimeBootstrapper::loadDynamicVCRuntime(JITDylib &JD,
bool DebugVersion) {
StringRef VCLibs[] = {"vcruntime.lib", "msvcrt.lib", "msvcprt.lib"};
StringRef UCRTLibs[] = {"ucrt.lib"};
std::vector<std::string> ImportedLibraries;
if (auto Err = loadVCRuntime(JD, ImportedLibraries, ArrayRef(VCLibs),
ArrayRef(UCRTLibs)))
return std::move(Err);
return ImportedLibraries;
}
Error COFFVCRuntimeBootstrapper::loadVCRuntime(
JITDylib &JD, std::vector<std::string> &ImportedLibraries,
ArrayRef<StringRef> VCLibs, ArrayRef<StringRef> UCRTLibs) {
MSVCToolchainPath Path;
if (!RuntimePath.empty()) {
Path.UCRTSdkLib = RuntimePath;
Path.VCToolchainLib = RuntimePath;
} else {
auto ToolchainPath = getMSVCToolchainPath();
if (!ToolchainPath)
return ToolchainPath.takeError();
Path = *ToolchainPath;
}
LLVM_DEBUG({
dbgs() << "Using VC toolchain pathes\n";
dbgs() << " VC toolchain path: " << Path.VCToolchainLib << "\n";
dbgs() << " UCRT path: " << Path.UCRTSdkLib << "\n";
});
auto LoadLibrary = [&](SmallString<256> LibPath, StringRef LibName) -> Error {
sys::path::append(LibPath, LibName);
auto G = StaticLibraryDefinitionGenerator::Load(ObjLinkingLayer,
LibPath.c_str());
if (!G)
return G.takeError();
for (auto &Lib : (*G)->getImportedDynamicLibraries())
ImportedLibraries.push_back(Lib);
JD.addGenerator(std::move(*G));
return Error::success();
};
for (auto &Lib : UCRTLibs)
if (auto Err = LoadLibrary(Path.UCRTSdkLib, Lib))
return Err;
for (auto &Lib : VCLibs)
if (auto Err = LoadLibrary(Path.VCToolchainLib, Lib))
return Err;
ImportedLibraries.push_back("ntdll.dll");
ImportedLibraries.push_back("Kernel32.dll");
return Error::success();
}
Error COFFVCRuntimeBootstrapper::initializeStaticVCRuntime(JITDylib &JD) {
ExecutorAddr jit_scrt_initialize, jit_scrt_dllmain_before_initialize_c,
jit_scrt_initialize_type_info,
jit_scrt_initialize_default_local_stdio_options;
if (auto Err = lookupAndRecordAddrs(
ES, LookupKind::Static, makeJITDylibSearchOrder(&JD),
{{ES.intern("__scrt_initialize_crt"), &jit_scrt_initialize},
{ES.intern("__scrt_dllmain_before_initialize_c"),
&jit_scrt_dllmain_before_initialize_c},
{ES.intern("?__scrt_initialize_type_info@@YAXXZ"),
&jit_scrt_initialize_type_info},
{ES.intern("__scrt_initialize_default_local_stdio_options"),
&jit_scrt_initialize_default_local_stdio_options}}))
return Err;
auto RunVoidInitFunc = [&](ExecutorAddr Addr) -> Error {
if (auto Res = ES.getExecutorProcessControl().runAsVoidFunction(Addr))
return Error::success();
else
return Res.takeError();
};
auto R =
ES.getExecutorProcessControl().runAsIntFunction(jit_scrt_initialize, 0);
if (!R)
return R.takeError();
if (auto Err = RunVoidInitFunc(jit_scrt_dllmain_before_initialize_c))
return Err;
if (auto Err = RunVoidInitFunc(jit_scrt_initialize_type_info))
return Err;
if (auto Err =
RunVoidInitFunc(jit_scrt_initialize_default_local_stdio_options))
return Err;
SymbolAliasMap Alias;
Alias[ES.intern("__run_after_c_init")] = {
ES.intern("__scrt_dllmain_after_initialize_c"), JITSymbolFlags::Exported};
if (auto Err = JD.define(symbolAliases(Alias)))
return Err;
return Error::success();
}
Expected<COFFVCRuntimeBootstrapper::MSVCToolchainPath>
COFFVCRuntimeBootstrapper::getMSVCToolchainPath() {
std::string VCToolChainPath;
ToolsetLayout VSLayout;
IntrusiveRefCntPtr<vfs::FileSystem> VFS = vfs::getRealFileSystem();
if (!findVCToolChainViaCommandLine(*VFS, std::nullopt, std::nullopt,
std::nullopt, VCToolChainPath, VSLayout) &&
!findVCToolChainViaEnvironment(*VFS, VCToolChainPath, VSLayout) &&
!findVCToolChainViaSetupConfig(*VFS, {}, VCToolChainPath, VSLayout) &&
!findVCToolChainViaRegistry(VCToolChainPath, VSLayout))
return make_error<StringError>("Couldn't find msvc toolchain.",
inconvertibleErrorCode());
std::string UniversalCRTSdkPath;
std::string UCRTVersion;
if (!getUniversalCRTSdkDir(*VFS, std::nullopt, std::nullopt, std::nullopt,
UniversalCRTSdkPath, UCRTVersion))
return make_error<StringError>("Couldn't find universal sdk.",
inconvertibleErrorCode());
MSVCToolchainPath ToolchainPath;
SmallString<256> VCToolchainLib(VCToolChainPath);
sys::path::append(VCToolchainLib, "lib", "x64");
ToolchainPath.VCToolchainLib = VCToolchainLib;
SmallString<256> UCRTSdkLib(UniversalCRTSdkPath);
sys::path::append(UCRTSdkLib, "Lib", UCRTVersion, "ucrt", "x64");
ToolchainPath.UCRTSdkLib = UCRTSdkLib;
return ToolchainPath;
}
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