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Fixes: debugger: start symbol is WinMainCRTStartup, not _start

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sometimes...
This commit is contained in:
hjk
2009-02-13 12:34:10 +01:00
parent f867061d5b
commit 7ad54e6313
2 changed files with 48 additions and 26 deletions
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72
src/plugins/debugger/gdbengine.cpp
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@@ -230,6 +230,15 @@ static bool isLeavableFunction(const QString &funcName, const QString &fileName)
return false; return false;
} }
static QString startSymbolName()
{
#ifdef Q_OS_WIN
return "WinMainCRTStartup";
#else
return "_start";
#endif
}
/////////////////////////////////////////////////////////////////////// ///////////////////////////////////////////////////////////////////////
// //
@@ -251,6 +260,7 @@ GdbEngine::~GdbEngine()
void GdbEngine::init() void GdbEngine::init()
{ {
m_pendingRequests = 0; m_pendingRequests = 0;
m_waitingForBreakpointSynchronizationToContinue = false;
m_gdbVersion = 100; m_gdbVersion = 100;
m_outputCodec = QTextCodec::codecForLocale(); m_outputCodec = QTextCodec::codecForLocale();
m_dataDumperState = DataDumperUninitialized; m_dataDumperState = DataDumperUninitialized;
@@ -650,7 +660,7 @@ void GdbEngine::maybeHandleInferiorPidChanged(const QString &pid0)
} }
if (pid == q->m_attachedPID) if (pid == q->m_attachedPID)
return; return;
//qDebug() << "FOUND PID " << pid; qDebug() << "FOUND PID " << pid;
q->m_attachedPID = pid; q->m_attachedPID = pid;
qq->notifyInferiorPidChanged(pid); qq->notifyInferiorPidChanged(pid);
} }
@@ -750,8 +760,10 @@ void GdbEngine::handleResultRecord(const GdbResultRecord &record)
--m_pendingRequests; --m_pendingRequests;
PENDING_DEBUG(" TYPE " << cmd.type << " DECREMENTS PENDING TO: " PENDING_DEBUG(" TYPE " << cmd.type << " DECREMENTS PENDING TO: "
<< m_pendingRequests << cmd.command); << m_pendingRequests << cmd.command);
if (m_pendingRequests <= 0) if (m_pendingRequests <= 0) {
PENDING_DEBUG(" .... AND TRIGGERS MODEL UPDATE");
updateWatchModel2(); updateWatchModel2();
}
} else { } else {
PENDING_DEBUG(" UNKNOWN TYPE " << cmd.type << " LEAVES PENDING AT: " PENDING_DEBUG(" UNKNOWN TYPE " << cmd.type << " LEAVES PENDING AT: "
<< m_pendingRequests << cmd.command); << m_pendingRequests << cmd.command);
@@ -1065,8 +1077,10 @@ void GdbEngine::handleAsyncOutput(const GdbMi &data)
QString msg = data.findChild("consolestreamoutput").data(); QString msg = data.findChild("consolestreamoutput").data();
if (reason.isEmpty()) { if (reason.isEmpty()) {
GdbMi frame = data.findChild("frame"); GdbMi frame = data.findChild("frame");
if (frame.findChild("func").data() == "_start") { if (frame.findChild("func").data() == startSymbolName()) {
//
// that's the "early stop" // that's the "early stop"
//
frame.findChild("func").data() + '%'; frame.findChild("func").data() + '%';
#if defined(Q_OS_WIN) #if defined(Q_OS_WIN)
sendCommand("info proc", GdbInfoProc); sendCommand("info proc", GdbInfoProc);
@@ -1078,9 +1092,6 @@ void GdbEngine::handleAsyncOutput(const GdbMi &data)
sendCommand("info pid", GdbInfoProc, QVariant(), true); sendCommand("info pid", GdbInfoProc, QVariant(), true);
#endif #endif
sendCommand("-file-list-exec-source-files", GdbQuerySources); sendCommand("-file-list-exec-source-files", GdbQuerySources);
sendCommand("sharedlibrary libc"); // for malloc
sendCommand("sharedlibrary libdl"); // for dlopen
tryLoadCustomDumpers(); tryLoadCustomDumpers();
// intentionally after tryLoadCustomDumpers(), // intentionally after tryLoadCustomDumpers(),
@@ -1098,11 +1109,12 @@ void GdbEngine::handleAsyncOutput(const GdbMi &data)
sendCommand("set auto-solib-add off"); sendCommand("set auto-solib-add off");
sendCommand("set stop-on-solib-events 0"); sendCommand("set stop-on-solib-events 0");
} }
reloadModules();
// this will "continue" if done // this will "continue" if done
attemptBreakpointSynchronization(); m_waitingForBreakpointSynchronizationToContinue = true;
QTimer::singleShot(0, this, SLOT(attemptBreakpointSynchronization()));
return; return;
} }
qDebug() << "EMPTY REASON FOR STOPPED";
// fall through // fall through
} }
@@ -1231,7 +1243,7 @@ void GdbEngine::handleAsyncOutput2(const GdbMi &data)
// //
// Breakpoints // Breakpoints
// //
//qDebug() << "BREAK ASYNC: " << output.toString(); //qDebug() << "BREAK ASYNC: " << data.toString();
//sendListBreakpoints(); //sendListBreakpoints();
//attemptBreakpointSynchronization(); //attemptBreakpointSynchronization();
//if (m_breakListOnStopNeeded) //if (m_breakListOnStopNeeded)
@@ -1572,7 +1584,7 @@ bool GdbEngine::startDebugger()
if (!q->m_processArgs.isEmpty()) if (!q->m_processArgs.isEmpty())
sendCommand("-exec-arguments " + q->m_processArgs.join(" ")); sendCommand("-exec-arguments " + q->m_processArgs.join(" "));
sendCommand("set auto-solib-add off"); sendCommand("set auto-solib-add off");
sendCommand("x/2i _start", GdbStart); sendCommand("x/2i " + startSymbolName(), GdbStart);
} }
if (q->startMode() == q->attachExternal) { if (q->startMode() == q->attachExternal) {
@@ -1597,8 +1609,6 @@ bool GdbEngine::startDebugger()
else else
qq->breakHandler()->setAllPending(); qq->breakHandler()->setAllPending();
//QTimer::singleShot(0, this, SLOT(attemptBreakpointSynchronization()));
return true; return true;
} }
@@ -1618,7 +1628,7 @@ void GdbEngine::handleStart(const GdbResultRecord &response)
// stdout:~"0x404540 <_start>:\txor %ebp,%ebp\n" // stdout:~"0x404540 <_start>:\txor %ebp,%ebp\n"
// stdout:~"0x404542 <_start+2>:\tmov %rdx,%r9\n" // stdout:~"0x404542 <_start+2>:\tmov %rdx,%r9\n"
QString msg = response.data.findChild("consolestreamoutput").data(); QString msg = response.data.findChild("consolestreamoutput").data();
QRegExp needle("0x([0-9a-f]+) <_start\\+.*>:"); QRegExp needle("0x([0-9a-f]+) <" + startSymbolName() + "\\+.*>:");
if (needle.indexIn(msg) != -1) { if (needle.indexIn(msg) != -1) {
//qDebug() << "STREAM: " << msg << needle.cap(1); //qDebug() << "STREAM: " << msg << needle.cap(1);
sendCommand("tbreak *0x" + needle.cap(1)); sendCommand("tbreak *0x" + needle.cap(1));
@@ -2080,11 +2090,14 @@ void GdbEngine::handleBreakInsert1(const GdbResultRecord &record, int index)
void GdbEngine::attemptBreakpointSynchronization() void GdbEngine::attemptBreakpointSynchronization()
{ {
// Non-lethal check for nested calls
static bool inBreakpointSychronization = false;
QTC_ASSERT(!inBreakpointSychronization, /**/);
inBreakpointSychronization = true;
BreakHandler *handler = qq->breakHandler(); BreakHandler *handler = qq->breakHandler();
//qDebug() << "BREAKPOINT SYNCHRONIZATION ";
foreach (BreakpointData *data, handler->takeRemovedBreakpoints()) { foreach (BreakpointData *data, handler->takeRemovedBreakpoints()) {
//qDebug() << " SYNCHRONIZATION REMOVING" << data;
QString bpNumber = data->bpNumber; QString bpNumber = data->bpNumber;
if (!bpNumber.trimmed().isEmpty()) if (!bpNumber.trimmed().isEmpty())
sendCommand("-break-delete " + bpNumber, BreakDelete, 0, true); sendCommand("-break-delete " + bpNumber, BreakDelete, 0, true);
@@ -2150,10 +2163,13 @@ void GdbEngine::attemptBreakpointSynchronization()
} }
} }
if (!updateNeeded) { if (!updateNeeded && m_waitingForBreakpointSynchronizationToContinue) {
m_waitingForBreakpointSynchronizationToContinue = false;
// we continue the execution // we continue the execution
continueInferior(); continueInferior();
} }
inBreakpointSychronization = false;
} }
@@ -3931,12 +3947,14 @@ void GdbEngine::tryLoadCustomDumpers()
if (QFileInfo(lib).isExecutable()) { if (QFileInfo(lib).isExecutable()) {
//sendCommand("p dlopen"); //sendCommand("p dlopen");
QString flag = QString::number(RTLD_NOW); QString flag = QString::number(RTLD_NOW);
sendSynchronizedCommand("call (void)dlopen(\"" + lib + "\", " + flag + ")", sendCommand("sharedlibrary libc"); // for malloc
sendCommand("sharedlibrary libdl"); // for dlopen
sendCommand("call (void)dlopen(\"" + lib + "\", " + flag + ")",
WatchDumpCustomSetup); WatchDumpCustomSetup);
// some older systems like CentOS 4.6 prefer this: // some older systems like CentOS 4.6 prefer this:
sendSynchronizedCommand("call (void)__dlopen(\"" + lib + "\", " + flag + ")", sendCommand("call (void)__dlopen(\"" + lib + "\", " + flag + ")",
WatchDumpCustomSetup); WatchDumpCustomSetup);
sendSynchronizedCommand("sharedlibrary " + dotEscape(lib)); sendCommand("sharedlibrary " + dotEscape(lib));
} else { } else {
qDebug() << "DEBUG HELPER LIBRARY IS NOT USABLE: " qDebug() << "DEBUG HELPER LIBRARY IS NOT USABLE: "
<< lib << QFileInfo(lib).isExecutable(); << lib << QFileInfo(lib).isExecutable();
@@ -3945,11 +3963,12 @@ void GdbEngine::tryLoadCustomDumpers()
#if defined(Q_OS_MAC) #if defined(Q_OS_MAC)
QString lib = q->m_buildDir + "/qtc-gdbmacros/libgdbmacros.dylib"; QString lib = q->m_buildDir + "/qtc-gdbmacros/libgdbmacros.dylib";
if (QFileInfo(lib).isExecutable()) { if (QFileInfo(lib).isExecutable()) {
//sendCommand("p dlopen"); // FIXME: remove me sendCommand("sharedlibrary libc"); // for malloc
sendCommand("sharedlibrary libdl"); // for dlopen
QString flag = QString::number(RTLD_NOW); QString flag = QString::number(RTLD_NOW);
sendSynchronizedCommand("call (void)dlopen(\"" + lib + "\", " + flag + ")", sendCommand("call (void)dlopen(\"" + lib + "\", " + flag + ")",
WatchDumpCustomSetup); WatchDumpCustomSetup);
sendSynchronizedCommand("sharedlibrary " + dotEscape(lib)); sendCommand("sharedlibrary " + dotEscape(lib));
} else { } else {
qDebug() << "DEBUG HELPER LIBRARY IS NOT USABLE: " qDebug() << "DEBUG HELPER LIBRARY IS NOT USABLE: "
<< lib << QFileInfo(lib).isExecutable(); << lib << QFileInfo(lib).isExecutable();
@@ -3958,11 +3977,12 @@ void GdbEngine::tryLoadCustomDumpers()
#if defined(Q_OS_WIN) #if defined(Q_OS_WIN)
QString lib = q->m_buildDir + "/qtc-gdbmacros/debug/gdbmacros.dll"; QString lib = q->m_buildDir + "/qtc-gdbmacros/debug/gdbmacros.dll";
if (QFileInfo(lib).exists()) { if (QFileInfo(lib).exists()) {
sendCommand("sharedlibrary .*"); // for LoadLibraryA
//sendCommand("handle SIGSEGV pass stop print"); //sendCommand("handle SIGSEGV pass stop print");
//sendCommand("set unwindonsignal off"); //sendCommand("set unwindonsignal off");
sendSynchronizedCommand("call LoadLibraryA(\"" + lib + "\")", sendCommand("call LoadLibraryA(\"" + lib + "\")",
WatchDumpCustomSetup); WatchDumpCustomSetup);
sendSynchronizedCommand("sharedlibrary " + dotEscape(lib)); sendCommand("sharedlibrary " + dotEscape(lib));
} else { } else {
qDebug() << "DEBUG HELPER LIBRARY IS NOT USABLE: " qDebug() << "DEBUG HELPER LIBRARY IS NOT USABLE: "
<< lib << QFileInfo(lib).isExecutable(); << lib << QFileInfo(lib).isExecutable();
@@ -3970,9 +3990,9 @@ void GdbEngine::tryLoadCustomDumpers()
#endif #endif
// retreive list of dumpable classes // retreive list of dumpable classes
sendSynchronizedCommand("call qDumpObjectData440(1,%1+1,0,0,0,0,0,0)", sendCommand("call qDumpObjectData440(1,%1+1,0,0,0,0,0,0)",
GdbQueryDataDumper1); GdbQueryDataDumper1);
sendSynchronizedCommand("p (char*)qDumpOutBuffer", GdbQueryDataDumper2); sendCommand("p (char*)qDumpOutBuffer", GdbQueryDataDumper2);
} }

2
src/plugins/debugger/gdbengine.h
View File

@@ -328,6 +328,8 @@ private:
QString m_currentFrame; QString m_currentFrame;
QMap<QString, QString> m_varToType; QMap<QString, QString> m_varToType;
bool m_waitingForBreakpointSynchronizationToContinue;
DebuggerManager *q; DebuggerManager *q;
IDebuggerManagerAccessForEngines *qq; IDebuggerManagerAccessForEngines *qq;
}; };