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/**************************************************************************
**
** This file is part of Qt Creator
**
** Copyright (c) 2011 Nokia Corporation and/or its subsidiary(-ies).
**
** Contact: Nokia Corporation (info@qt.nokia.com)
**
**
** GNU Lesser General Public License Usage
**
** This file may be used under the terms of the GNU Lesser General Public
** License version 2.1 as published by the Free Software Foundation and
** appearing in the file LICENSE.LGPL included in the packaging of this file.
** Please review the following information to ensure the GNU Lesser General
** Public License version 2.1 requirements will be met:
** http://www.gnu.org/licenses/old-licenses/lgpl-2.1.html.
**
** In addition, as a special exception, Nokia gives you certain additional
** rights. These rights are described in the Nokia Qt LGPL Exception
** version 1.1, included in the file LGPL_EXCEPTION.txt in this package.
**
** Other Usage
**
** Alternatively, this file may be used in accordance with the terms and
** conditions contained in a signed written agreement between you and Nokia.
**
** If you have questions regarding the use of this file, please contact
** Nokia at qt-info@nokia.com.
**
**************************************************************************/
#define QT_NO_CAST_FROM_ASCII
#include "lldbengineguest.h"
#include "debuggeractions.h"
#include "debuggerconstants.h"
#include "debuggerdialogs.h"
#include "debuggerplugin.h"
#include "debuggerstringutils.h"
#include "breakhandler.h"
#include "breakpoint.h"
#include "moduleshandler.h"
#include "registerhandler.h"
#include "stackhandler.h"
#include "watchhandler.h"
#include "watchutils.h"
#include "threadshandler.h"
#include <utils/qtcassert.h>
#include <QtCore/QDebug>
#include <QtCore/QProcess>
#include <QtCore/QFileInfo>
#include <QtCore/QThread>
#include <QtCore/QMutexLocker>
#include <lldb/API/LLDB.h>
#define DEBUG_FUNC_ENTER \
showMessage(QString(QLatin1String("LLDB guest engine: %1 ")) \
.arg(QLatin1String(Q_FUNC_INFO))); \
qDebug("%s", Q_FUNC_INFO)
#define SYNC_INFERIOR_OR(x) if (m_running) { x; }
namespace Debugger {
namespace Internal {
void LldbEventListener::listen(lldb::SBListener *listener)
{
while (true) {
lldb::SBEvent event;
if (listener->WaitForEvent(1000, event))
emit lldbEvent(&event);
}
}
LldbEngineGuest::LldbEngineGuest()
: IPCEngineGuest()
, m_running (false)
, m_worker (new LldbEventListener)
, m_lldb (new lldb::SBDebugger)
, m_target (new lldb::SBTarget)
, m_process (new lldb::SBProcess)
, m_listener(new lldb::SBListener("bla"))
, m_relistFrames (false)
#if defined(HAVE_LLDB_PRIVATE)
, py (new PythonLLDBToGdbMiHack)
#endif
{
qRegisterMetaType<lldb::SBListener *>("lldb::SBListener *");
qRegisterMetaType<lldb::SBEvent *>("lldb::SBEvent *");
m_worker->moveToThread(&m_wThread);
connect(m_worker, SIGNAL(lldbEvent(lldb::SBEvent *)), this,
SLOT(lldbEvent(lldb::SBEvent *)), Qt::BlockingQueuedConnection);
m_wThread.start();
setObjectName(QLatin1String("LLDBEngineGuest"));
}
LldbEngineGuest::~LldbEngineGuest()
{
delete m_lldb;
delete m_target;
delete m_process;
delete m_listener;
}
void LldbEngineGuest::nuke()
{
::exit(4);
}
void LldbEngineGuest::setupEngine()
{
DEBUG_FUNC_ENTER;
lldb::SBDebugger::Initialize();
*m_lldb = lldb::SBDebugger::Create();
m_lldb->Initialize();
if (m_lldb->IsValid())
notifyEngineSetupOk();
else
notifyEngineSetupFailed();
}
void LldbEngineGuest::setupInferior(const QString &executable,
const QStringList &args, const QStringList &env)
{
DEBUG_FUNC_ENTER;
foreach (const QString &s, args) {
m_arguments.append(s.toLocal8Bit());
}
foreach (const QString &s, env) {
m_environment.append(s.toLocal8Bit());
}
qDebug("creating target for %s", executable.toLocal8Bit().data());
showStatusMessage(QLatin1String("starting ") + executable);
*m_target = m_lldb->CreateTarget(executable.toLocal8Bit().data());
if (!m_target->IsValid()) {
notifyInferiorSetupFailed();
return;
}
DEBUG_FUNC_ENTER;
const char **argp = new const char *[m_arguments.count() + 1];
argp[m_arguments.count()] = 0;
for (int i = 0; i < m_arguments.count(); i++) {
argp[i] = m_arguments[i].data();
}
const char **envp = new const char *[m_environment.count() + 1];
envp[m_environment.count()] = 0;
for (int i = 0; i < m_environment.count(); i++) {
envp[i] = m_environment[i].data();
}
lldb::SBError err;
*m_process = m_target->Launch(argp, envp, NULL, NULL, true, err);
if (!err.Success()) {
showMessage(QString::fromLocal8Bit(err.GetCString()));
qDebug() << err.GetCString();
notifyInferiorSetupFailed();
}
/*
* note, the actual string ptrs are still valid. They are in m_environment.
* They probably leak. Considered the marvelous API, there is not much we can do
*/
delete [] envp;
if (!m_process->IsValid())
notifyEngineRunFailed();
QTC_ASSERT(m_listener->IsValid(), qDebug() << false);
m_listener->StartListeningForEvents(m_process->GetBroadcaster(), UINT32_MAX);
QMetaObject::invokeMethod(m_worker, "listen", Qt::QueuedConnection,
Q_ARG(lldb::SBListener *, m_listener));
notifyInferiorSetupOk();
}
void LldbEngineGuest::runEngine()
{
DEBUG_FUNC_ENTER;
m_process->Continue();
}
void LldbEngineGuest::shutdownInferior()
{
DEBUG_FUNC_ENTER;
m_process->Kill();
}
void LldbEngineGuest::shutdownEngine()
{
DEBUG_FUNC_ENTER;
m_currentFrame = lldb::SBFrame();
m_currentThread = lldb::SBThread();
m_breakpoints.clear();
m_localesCache.clear();
/*
* this leaks. However, Terminate is broken and lldb leaks anyway
* We should kill the engine guest process
*/
*m_lldb = lldb::SBDebugger();
// leakd.Terminate();
notifyEngineShutdownOk();
}
void LldbEngineGuest::detachDebugger()
{
DEBUG_FUNC_ENTER;
}
void LldbEngineGuest::executeStep()
{
DEBUG_FUNC_ENTER;
if (!m_currentThread.IsValid())
return;
m_currentThread.StepInto();
}
void LldbEngineGuest::executeStepOut()
{
DEBUG_FUNC_ENTER;
if (!m_currentThread.IsValid())
return;
m_currentThread.StepOut();
}
void LldbEngineGuest::executeNext()
{
DEBUG_FUNC_ENTER;
if (!m_currentThread.IsValid())
return;
m_currentThread.StepOver();
}
void LldbEngineGuest::executeStepI()
{
DEBUG_FUNC_ENTER;
if (!m_currentThread.IsValid())
return;
m_currentThread.StepInstruction(false);
}
void LldbEngineGuest::executeNextI()
{
DEBUG_FUNC_ENTER;
if (!m_currentThread.IsValid())
return;
m_currentThread.StepInstruction(true);
}
void LldbEngineGuest::continueInferior()
{
DEBUG_FUNC_ENTER;
notifyInferiorRunRequested();
m_process->Continue();
showStatusMessage(QLatin1String("resuming inferior"));
}
void LldbEngineGuest::interruptInferior()
{
DEBUG_FUNC_ENTER;
m_process->Stop();
notifyInferiorStopOk();
m_relistFrames = true;
updateThreads();
}
void LldbEngineGuest::executeRunToLine(const ContextData &data);
{
DEBUG_FUNC_ENTER;
// TODO
Q_UNUSED(data);
}
void LldbEngineGuest::executeRunToFunction(const QString &functionName)
{
DEBUG_FUNC_ENTER;
// TODO
Q_UNUSED(functionName);
}
void LldbEngineGuest::executeJumpToLine(const ContextData &data);
{
DEBUG_FUNC_ENTER;
// TODO
Q_UNUSED(data);
}
void LldbEngineGuest::activateFrame(qint64 token)
{
DEBUG_FUNC_ENTER;
SYNC_INFERIOR_OR(showMessage(QLatin1String(
"activateFrame called while inferior running")); return);
currentFrameChanged(token);
m_localesCache.clear();
lldb::SBFrame fr = m_currentThread.GetFrameAtIndex(token);
m_currentFrame = fr;
lldb::SBSymbolContext context = fr.GetSymbolContext(lldb::eSymbolContextEverything);
lldb::SBValueList values = fr.GetVariables(true, true, false, true);
QList<WatchData> wd;
QByteArray iname = "local";
for (uint i = 0; i < values.GetSize(); i++) {
lldb::SBValue v = values.GetValueAtIndex(i);
if (!v.IsInScope(fr))
continue;
getWatchDataR(v, 1, iname, wd);
}
updateWatchData(true, wd);
}
void LldbEngineGuest::requestUpdateWatchData(const Internal::WatchData &data,
const Internal::WatchUpdateFlags &)
{
DEBUG_FUNC_ENTER;
SYNC_INFERIOR_OR(return);
lldb::SBValue v = m_localesCache.value(QString::fromUtf8(data.iname));
QList<WatchData> wd;
for (uint j = 0; j < v.GetNumChildren(); j++) {
lldb::SBValue vv = v.GetChildAtIndex(j);
getWatchDataR(vv, 1, data.iname, wd);
}
updateWatchData(false, wd);
}
void LldbEngineGuest::getWatchDataR(lldb::SBValue v, int level,
const QByteArray &p_iname, QList<WatchData> &wd)
{
QByteArray iname = p_iname + '.' + QByteArray(v.GetName());
m_localesCache.insert(QString::fromLocal8Bit(iname), v);
#if defined(HAVE_LLDB_PRIVATE)
wd += py->expand(p_iname, v, m_currentFrame, *m_process);
#else
WatchData d;
d.name = QString::fromLocal8Bit(v.GetName());
d.iname = iname;
d.type = QByteArray(v.GetTypeName()).trimmed();
d.value = (QString::fromLocal8Bit(v.GetValue(m_currentFrame)));
d.hasChildren = v.GetNumChildren();
d.state = WatchData::State(0);
wd.append(d);
#endif
if (--level > 0) {
for (uint j = 0; j < v.GetNumChildren(); j++) {
lldb::SBValue vv = v.GetChildAtIndex(j);
getWatchDataR(vv, level, iname, wd);
}
}
}
void LldbEngineGuest::disassemble(quint64 pc)
{
DEBUG_FUNC_ENTER;
SYNC_INFERIOR_OR(return);
if (!m_currentThread.IsValid())
return;
for (uint j = 0; j < m_currentThread.GetNumFrames(); j++) {
lldb::SBFrame fr = m_currentThread.GetFrameAtIndex(j);
if (pc == fr.GetPCAddress().GetLoadAddress(*m_target)) {
QString linesStr = QString::fromLocal8Bit(fr.Disassemble());
DisassemblerLines lines;
foreach (const QString &lineStr, linesStr.split(QLatin1Char('\n'))) {
lines.appendLine(DisassemblerLine(lineStr));
}
disassembled(pc, lines);
}
}
}
void LldbEngineGuest::fetchFrameSource(qint64 frame)
{
QFile f(m_frame_to_file.value(frame));
f.open(QFile::ReadOnly);
frameSourceFetched(frame, QFileInfo(m_frame_to_file.value(frame)).fileName()
, QString::fromLocal8Bit(f.readAll()));
}
void LldbEngineGuest::addBreakpoint(BreakpointId id,
const Internal::BreakpointParameters &bp_)
{
DEBUG_FUNC_ENTER;
SYNC_INFERIOR_OR(notifyAddBreakpointFailed(id); return);
Internal::BreakpointParameters bp(bp_);
lldb::SBBreakpoint llbp = m_target->BreakpointCreateByLocation(
bp.fileName.toLocal8Bit().constData(), bp.lineNumber);
if (llbp.IsValid()) {
m_breakpoints.insert(id, llbp);
llbp.SetIgnoreCount(bp.ignoreCount);
bp.ignoreCount = llbp.GetIgnoreCount();
bp.enabled = llbp.IsEnabled();
lldb::SBBreakpointLocation location = llbp.GetLocationAtIndex(0);
if (location.IsValid()) {
bp.address = location.GetLoadAddress();
// FIXME get those from lldb
bp.lineNumber = bp.lineNumber;
bp.fileName = bp.fileName;
notifyAddBreakpointOk(id);
showMessage(QLatin1String("[BB] ok."));
notifyBreakpointAdjusted(id, bp);
} else {
m_breakpoints.take(id);
showMessage(QLatin1String("[BB] failed. cant resolve yet"));
// notifyAddBreakpointFailed(id);
// notifyAddBreakpointOk(id);
}
} else {
showMessage(QLatin1String("[BB] failed. dunno."));
notifyAddBreakpointFailed(id);
}
}
void LldbEngineGuest::removeBreakpoint(BreakpointId id)
{
DEBUG_FUNC_ENTER;
SYNC_INFERIOR_OR(notifyRemoveBreakpointFailed(id); return);
lldb::SBBreakpoint llbp = m_breakpoints.take(id);
llbp.SetEnabled(false);
notifyRemoveBreakpointOk(id);
}
void LldbEngineGuest::changeBreakpoint(BreakpointId id,
const Internal::BreakpointParameters &bp)
{
DEBUG_FUNC_ENTER;
// TODO
Q_UNUSED(id);
Q_UNUSED(bp);
}
void LldbEngineGuest::selectThread(qint64 token)
{
DEBUG_FUNC_ENTER;
SYNC_INFERIOR_OR(return);
m_frame_to_file.clear();
for (uint i = 0; i < m_process->GetNumThreads(); i++) {
lldb::SBThread t = m_process->GetThreadAtIndex(i);
if (t.GetThreadID() == token) {
m_currentThread = t;
StackFrames frames;
int firstResolvableFrame = -1;
for (uint j = 0; j < t.GetNumFrames(); j++) {
lldb::SBFrame fr = t.GetFrameAtIndex(j);
if (!fr.IsValid()) {
qDebug("warning: frame %i is garbage", j);
continue;
}
lldb::SBSymbolContext context =
fr.GetSymbolContext(lldb::eSymbolContextEverything);
lldb::SBSymbol sym = fr.GetSymbol();
lldb::SBFunction func = fr.GetFunction();
lldb::SBCompileUnit tu = fr.GetCompileUnit();
lldb::SBModule module = fr.GetModule();
lldb::SBBlock block = fr.GetBlock();
lldb::SBBlock fblock = fr.GetFrameBlock();
lldb::SBLineEntry le = fr.GetLineEntry();
lldb::SBValueList values = fr.GetVariables(true, true, true, false);
#if 0
qDebug()<<"\tframe "<<fr.GetFrameID();
qDebug() << "\t\tPC: " << ("0x" + QByteArray::number(
fr.GetPCAddress().GetLoadAddress(*m_target), 16)).data();
qDebug() << "\t\tFP: " << ("0x" + QByteArray::number(fr.GetFP(), 16)).data();
qDebug() << "\t\tSP: " << ("0x" + QByteArray::number(fr.GetSP(), 16)).data();
qDebug() << "\t\tsymbol: " << sym.IsValid() << sym.GetName() << sym.GetMangledName();
qDebug() << "\t\tfunction:" << func.IsValid();
qDebug() << "\t\ttu: " << tu.IsValid();
if (tu.IsValid()) {
}
qDebug() << "\t\tmodule: " << module.IsValid() << module.GetFileSpec().IsValid()
<< module.GetFileSpec().GetFilename();
qDebug() << "\t\tblock: " << block.IsValid() << block.GetInlinedName();
qDebug() << "\t\tfblock: " << block.IsValid() << block.GetInlinedName();
qDebug() << "\t\tle: " << le.IsValid() << le.GetLine()<<le.GetColumn();
qDebug() << "\t\tvalues: "<<values.IsValid() << values.GetSize();
qDebug() << "\t\tcontext: " << context.IsValid();
qDebug() << "\t\t\tmodule: " << context.GetModule().IsValid();
qDebug() << "\t\t\tfunction: " << context.GetFunction().IsValid();
qDebug() << "\t\t\tblock: " << context.GetBlock().IsValid();
qDebug() << "\t\t\tle: " << context.GetLineEntry().IsValid();
qDebug() << "\t\t\tsymbol: " << context.GetSymbol().IsValid();
// qDebug() << "\t\tdisassemly -->\n" << fr.Disassemble() << "<--";
#endif
QString sourceFile;
QString sourceFilePath;
int lineNumber = 0;
if (le.IsValid()) {
lineNumber = le.GetLine();
if (le.GetFileSpec().IsValid()) {
sourceFile = QString::fromLocal8Bit(le.GetFileSpec().GetFilename());
sourceFilePath = QString::fromLocal8Bit(le.GetFileSpec().GetDirectory())
+ QLatin1String("/") + sourceFile;
if (firstResolvableFrame < 0)
firstResolvableFrame = j;
}
}
sourceFilePath = QFileInfo(sourceFilePath).canonicalFilePath();
QString functionName;
if (func.IsValid())
functionName = QString::fromLocal8Bit(func.GetName());
else
functionName = QString::fromLocal8Bit(sym.GetName());
StackFrame frame;
frame.level = fr.GetFrameID();
if (func.IsValid())
frame.function = QString::fromLocal8Bit(func.GetName());
else
frame.function = QString::fromLocal8Bit(sym.GetName());
frame.from = QString::fromLocal8Bit(module.GetFileSpec().GetFilename());
frame.address = fr.GetPCAddress().GetLoadAddress(*m_target);
frame.line = lineNumber;
frame.file = sourceFilePath;
frame.usable = QFileInfo(frame.file).isReadable();
frames.append(frame);
m_frame_to_file.insert(j, frame.file);
}
currentThreadChanged(token);
listFrames(frames);
activateFrame(firstResolvableFrame > -1 ? firstResolvableFrame : 0);
return;
}
}
}
void LldbEngineGuest::updateThreads()
{
DEBUG_FUNC_ENTER;
SYNC_INFERIOR_OR(return);
/* There is no way to find the StopReason of a _process_
* We try to emulate gdb here, by assuming there must be exactly one 'guilty' thread.
* However, if there are no threads at all, it must be that the process
* no longer exists. Let's tear down the whole session.
*/
if (m_process->GetNumThreads() < 1) {
notifyEngineSpontaneousShutdown();
m_process->Kill();
m_process->Destroy();
}
Threads threads;
for (uint i = 0; i < m_process->GetNumThreads(); i++) {
lldb::SBThread t = m_process->GetThreadAtIndex(i);
if (!t.IsValid()) {
qDebug("warning: thread %i is garbage", i);
continue;
}
ThreadData thread;
thread.id = t.GetThreadID();
thread.targetId = QString::number(t.GetThreadID());
thread.core.clear();
thread.state = QString::number(t.GetStopReason());
switch (t.GetStopReason()) {
case lldb::eStopReasonInvalid:
case lldb::eStopReasonNone:
case lldb::eStopReasonTrace:
thread.state = QLatin1String("running");
break;
case lldb::eStopReasonBreakpoint:
case lldb::eStopReasonWatchpoint:
showStatusMessage(QLatin1String("hit breakpoint"));
thread.state = QLatin1String("hit breakpoint");
if (m_currentThread.GetThreadID() != t.GetThreadID()) {
m_currentThread = t;
currentThreadChanged(t.GetThreadID());
m_relistFrames = true;
}
break;
case lldb::eStopReasonSignal:
showStatusMessage(QLatin1String("stopped"));
thread.state = QLatin1String("stopped");
if (m_currentThread.GetThreadID() != t.GetThreadID()) {
m_currentThread = t;
currentThreadChanged(t.GetThreadID());
m_relistFrames = true;
}
break;
case lldb::eStopReasonException:
showStatusMessage(QLatin1String("application crashed."));
thread.state = QLatin1String("crashed");
if (m_currentThread.GetThreadID() != t.GetThreadID()) {
m_currentThread = t;
currentThreadChanged(t.GetThreadID());
m_relistFrames = true;
}
break;
case lldb::eStopReasonPlanComplete:
thread.state = QLatin1String("crazy things happened");
break;
};
thread.lineNumber = 0;
thread.name = QString::fromLocal8Bit(t.GetName());
lldb::SBFrame fr = t.GetFrameAtIndex(0);
if (!fr.IsValid()) {
qDebug("warning: frame 0 is garbage");
continue;
}
lldb::SBSymbolContext context = fr.GetSymbolContext(lldb::eSymbolContextEverything);
lldb::SBSymbol sym = fr.GetSymbol();
lldb::SBFunction func = fr.GetFunction();
lldb::SBLineEntry le = fr.GetLineEntry();
QString sourceFile;
QString sourceFilePath;
int lineNumber = 0;
if (le.IsValid()) {
lineNumber = le.GetLine();
if (le.GetFileSpec().IsValid()) {
sourceFile = QString::fromLocal8Bit(le.GetFileSpec().GetFilename());
sourceFilePath = QString::fromLocal8Bit(le.GetFileSpec().GetDirectory())
+ QLatin1String("/") + sourceFile;
}
}
QString functionName;
if (func.IsValid())
functionName = QString::fromLocal8Bit(func.GetName());
else
functionName = QString::fromLocal8Bit(sym.GetName());
lldb::SBValueList values = fr.GetVariables(true, true, false, false);
thread.fileName = sourceFile;
thread.function = functionName;
thread.address = fr.GetPCAddress().GetLoadAddress(*m_target);
thread.lineNumber = lineNumber;
threads.append(thread);
}
listThreads(threads);
if (m_relistFrames) {
selectThread(m_currentThread.GetThreadID());
m_relistFrames = false;
}
}
void LldbEngineGuest::lldbEvent(lldb::SBEvent *ev)
{
qDebug() << "lldbevent" << ev->GetType() <<
m_process->GetState() << (int)state();
uint32_t etype = ev->GetType();
switch (etype) {
// ProcessEvent
case 1:
switch (m_process->GetState()) {
case lldb::eStateRunning: // 5
if (!m_running) {
m_running = true;
}
notifyInferiorPid(m_process->GetProcessID());
switch (state()) {
case EngineRunRequested:
notifyEngineRunAndInferiorRunOk();
break;
case InferiorRunRequested:
notifyInferiorRunOk();
break;
case InferiorStopOk:
notifyInferiorRunRequested();
notifyInferiorRunOk();
break;
default:
break;
}
break;
case lldb::eStateExited: // 9
if (m_running) {
m_running = false;
}
switch (state()) {
case InferiorShutdownRequested:
notifyInferiorShutdownOk();
break;
case InferiorRunOk:
m_relistFrames = true;
updateThreads();
notifyEngineSpontaneousShutdown();
m_process->Kill();
m_process->Destroy();
break;
default:
updateThreads();
break;
}
break;
case lldb::eStateStopped: // 4
if (m_running) {
m_running = false;
}
switch (state()) {
case InferiorShutdownRequested:
notifyInferiorShutdownOk();
break;
case InferiorRunOk:
m_relistFrames = true;
updateThreads();
notifyInferiorSpontaneousStop();
// fall
default:
m_relistFrames = true;
updateThreads();
break;
}
break;
case lldb::eStateCrashed: // 7
if (m_running) {
m_running = false;
}
switch (state()) {
case InferiorShutdownRequested:
notifyInferiorShutdownOk();
break;
case InferiorRunOk:
m_relistFrames = true;
updateThreads();
notifyInferiorSpontaneousStop();
break;
default:
break;
}
break;
default:
qDebug("unexpected ProcessEvent");
break;
}
break;;
default:
break;;
};
}
} // namespace Internal
} // namespace Debugger
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