blob: ceefa25a703b6e38d22d3b8c6d5586c1bbd990a4 (
plain) (
blame)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
|
//===- lib/Passes/PassPluginLoader.cpp - Load Plugins for New PM Passes ---===//
//
// 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/Passes/PassPlugin.h"
#include "llvm/Support/raw_ostream.h"
#include <cstdint>
using namespace llvm;
Expected<PassPlugin> PassPlugin::Load(const std::string &Filename) {
std::string Error;
auto Library =
sys::DynamicLibrary::getPermanentLibrary(Filename.c_str(), &Error);
if (!Library.isValid())
return make_error<StringError>(Twine("Could not load library '") +
Filename + "': " + Error,
inconvertibleErrorCode());
PassPlugin P{Filename, Library};
intptr_t getDetailsFn =
(intptr_t)Library.SearchForAddressOfSymbol("llvmGetPassPluginInfo");
if (!getDetailsFn)
// If the symbol isn't found, this is probably a legacy plugin, which is an
// error
return make_error<StringError>(Twine("Plugin entry point not found in '") +
Filename + "'. Is this a legacy plugin?",
inconvertibleErrorCode());
P.Info = reinterpret_cast<decltype(llvmGetPassPluginInfo) *>(getDetailsFn)();
if (P.Info.APIVersion != LLVM_PLUGIN_API_VERSION)
return make_error<StringError>(
Twine("Wrong API version on plugin '") + Filename + "'. Got version " +
Twine(P.Info.APIVersion) + ", supported version is " +
Twine(LLVM_PLUGIN_API_VERSION) + ".",
inconvertibleErrorCode());
if (!P.Info.RegisterPassBuilderCallbacks)
return make_error<StringError>(Twine("Empty entry callback in plugin '") +
Filename + "'.'",
inconvertibleErrorCode());
return P;
}
|
