blob: bbf3ada1d4bad2ae063ff518dcc804e01b112b2f [file] [log] [blame]
//===---------------- TPCDynamicLibrarySearchGenerator.cpp ----------------===//
// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
// See for license information.
// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
#include "llvm/ExecutionEngine/Orc/TPCDynamicLibrarySearchGenerator.h"
namespace llvm {
namespace orc {
TPCDynamicLibrarySearchGenerator::Load(TargetProcessControl &TPC,
const char *LibraryPath,
SymbolPredicate Allow) {
auto Handle = TPC.loadDylib(LibraryPath);
if (!Handle)
return Handle.takeError();
return std::make_unique<TPCDynamicLibrarySearchGenerator>(TPC, *Handle,
Error TPCDynamicLibrarySearchGenerator::tryToGenerate(
LookupState &LS, LookupKind K, JITDylib &JD,
JITDylibLookupFlags JDLookupFlags, const SymbolLookupSet &Symbols) {
if (Symbols.empty())
return Error::success();
SymbolLookupSet LookupSymbols;
for (auto &KV : Symbols) {
// Skip symbols that don't match the filter.
if (Allow && !Allow(KV.first))
LookupSymbols.add(KV.first, SymbolLookupFlags::WeaklyReferencedSymbol);
SymbolMap NewSymbols;
TargetProcessControl::LookupRequest Request(H, LookupSymbols);
auto Result = TPC.lookupSymbols(Request);
if (!Result)
return Result.takeError();
assert(Result->size() == 1 && "Results for more than one library returned");
assert(Result->front().size() == LookupSymbols.size() &&
"Result has incorrect number of elements");
auto ResultI = Result->front().begin();
for (auto &KV : LookupSymbols) {
if (*ResultI)
NewSymbols[KV.first] =
JITEvaluatedSymbol(*ResultI, JITSymbolFlags::Exported);
// If there were no resolved symbols bail out.
if (NewSymbols.empty())
return Error::success();
// Define resolved symbols.
return JD.define(absoluteSymbols(std::move(NewSymbols)));
} // end namespace orc
} // end namespace llvm