4268e677da
The `DebugObjectManagerPlugin` implements debugger support for ELF platforms with the GDB JIT Interface. It emits a separate debug object allocation in addition to the LinkGraph's own allocation. This used to happen in the plugin's `notifyEmitted()` callback, i.e. after the LinkGraph's allocation was finalized. In the meantime, it had to block finalization of the corresponding materialization unit to make sure that the debugger can register the object before the code runs. This patch switches the plugin to use an allocation action instead. We can remove the `notifyEmitted()` hook and implement all steps as JITLink passes.
60 lines
2.1 KiB
C++
60 lines
2.1 KiB
C++
//===------ DebuggerSupport.cpp - Utils for enabling debugger support -----===//
|
|
//
|
|
// 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/Debugging/DebuggerSupport.h"
|
|
#include "llvm/ExecutionEngine/Orc/DebugObjectManagerPlugin.h"
|
|
#include "llvm/ExecutionEngine/Orc/Debugging/DebuggerSupportPlugin.h"
|
|
#include "llvm/ExecutionEngine/Orc/LLJIT.h"
|
|
|
|
#define DEBUG_TYPE "orc"
|
|
|
|
using namespace llvm;
|
|
using namespace llvm::orc;
|
|
|
|
namespace llvm::orc {
|
|
|
|
Error enableDebuggerSupport(LLJIT &J) {
|
|
auto *ObjLinkingLayer = dyn_cast<ObjectLinkingLayer>(&J.getObjLinkingLayer());
|
|
if (!ObjLinkingLayer)
|
|
return make_error<StringError>("Cannot enable LLJIT debugger support: "
|
|
"Debugger support requires JITLink",
|
|
inconvertibleErrorCode());
|
|
auto ProcessSymsJD = J.getProcessSymbolsJITDylib();
|
|
if (!ProcessSymsJD)
|
|
return make_error<StringError>("Cannot enable LLJIT debugger support: "
|
|
"Process symbols are not available",
|
|
inconvertibleErrorCode());
|
|
|
|
auto &ES = J.getExecutionSession();
|
|
const auto &TT = J.getTargetTriple();
|
|
|
|
switch (TT.getObjectFormat()) {
|
|
case Triple::ELF: {
|
|
Error TargetSymErr = Error::success();
|
|
ObjLinkingLayer->addPlugin(std::make_unique<DebugObjectManagerPlugin>(
|
|
ES, false, true, TargetSymErr));
|
|
return TargetSymErr;
|
|
}
|
|
case Triple::MachO: {
|
|
auto DS = GDBJITDebugInfoRegistrationPlugin::Create(ES, *ProcessSymsJD, TT);
|
|
if (!DS)
|
|
return DS.takeError();
|
|
ObjLinkingLayer->addPlugin(std::move(*DS));
|
|
return Error::success();
|
|
}
|
|
default:
|
|
return make_error<StringError>(
|
|
"Cannot enable LLJIT debugger support: " +
|
|
Triple::getObjectFormatTypeName(TT.getObjectFormat()) +
|
|
" is not supported",
|
|
inconvertibleErrorCode());
|
|
}
|
|
}
|
|
|
|
} // namespace llvm::orc
|