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to reflect the new license. We understand that people may be surprised that we're moving the header entirely to discuss the new license. We checked this carefully with the Foundation's lawyer and we believe this is the correct approach. Essentially, all code in the project is now made available by the LLVM project under our new license, so you will see that the license headers include that license only. Some of our contributors have contributed code under our old license, and accordingly, we have retained a copy of our old license notice in the top-level files in each project and repository. llvm-svn: 351636
52 lines
2.0 KiB
C++
52 lines
2.0 KiB
C++
//===- lib/Passes/PassPluginLoader.cpp - Load Plugins for New PM Passes ---===//
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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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#include "llvm/Passes/PassPlugin.h"
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#include "llvm/Support/raw_ostream.h"
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#include <cstdint>
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using namespace llvm;
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Expected<PassPlugin> PassPlugin::Load(const std::string &Filename) {
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std::string Error;
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auto Library =
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sys::DynamicLibrary::getPermanentLibrary(Filename.c_str(), &Error);
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if (!Library.isValid())
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return make_error<StringError>(Twine("Could not load library '") +
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Filename + "': " + Error,
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inconvertibleErrorCode());
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PassPlugin P{Filename, Library};
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intptr_t getDetailsFn =
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(intptr_t)Library.SearchForAddressOfSymbol("llvmGetPassPluginInfo");
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if (!getDetailsFn)
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// If the symbol isn't found, this is probably a legacy plugin, which is an
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// error
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return make_error<StringError>(Twine("Plugin entry point not found in '") +
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Filename + "'. Is this a legacy plugin?",
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inconvertibleErrorCode());
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P.Info = reinterpret_cast<decltype(llvmGetPassPluginInfo) *>(getDetailsFn)();
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if (P.Info.APIVersion != LLVM_PLUGIN_API_VERSION)
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return make_error<StringError>(
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Twine("Wrong API version on plugin '") + Filename + "'. Got version " +
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Twine(P.Info.APIVersion) + ", supported version is " +
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Twine(LLVM_PLUGIN_API_VERSION) + ".",
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inconvertibleErrorCode());
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if (!P.Info.RegisterPassBuilderCallbacks)
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return make_error<StringError>(Twine("Empty entry callback in plugin '") +
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Filename + "'.'",
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inconvertibleErrorCode());
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return P;
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}
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