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debugger.cpp
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/****************************************************************************
** SASM - simple IDE for assembler development
** Copyright (C) 2013 Dmitriy Manushin
** Contact: site: http://dman95.github.io/SASM/
** e-mail: [email protected]
**
** This file is part of SASM.
**
** SASM is free software: you can redistribute it and/or modify
** it under the terms of the GNU General Public License as published by
** the Free Software Foundation, either version 3 of the License, or
** (at your option) any later version.
**
** SASM is distributed in the hope that it will be useful,
** but WITHOUT ANY WARRANTY; without even the implied warranty of
** MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
** GNU General Public License for more details.
**
** You should have received a copy of the GNU General Public License
** along with SASM. If not, see <http://www.gnu.org/licenses/>.
**
** Этот файл — часть SASM.
**
** SASM - свободная программа: вы можете перераспространять ее и/или
** изменять ее на условиях Стандартной общественной лицензии GNU в том виде,
** в каком она была опубликована Фондом свободного программного обеспечения;
** либо версии 3 лицензии, либо (по вашему выбору) любой более поздней
** версии.
**
** SASM распространяется в надежде, что она будет полезной,
** но БЕЗО ВСЯКИХ ГАРАНТИЙ; даже без неявной гарантии ТОВАРНОГО ВИДА
** или ПРИГОДНОСТИ ДЛЯ ОПРЕДЕЛЕННЫХ ЦЕЛЕЙ. Подробнее см. в Стандартной
** общественной лицензии GNU.
**
** Вы должны были получить копию Стандартной общественной лицензии GNU
** вместе с этой программой. Если это не так, см.
** <http://www.gnu.org/licenses/>.)
**
****************************************************************************/
#include "debugger.h"
/**
* @file debugger.cpp
* Sets debugger information and runs the debugger.
*/
namespace {
// read struct like {<name1> = <value1>, ,,, <nameN> = <valueN>}
// from stream. Values may be simple or complex, like {v1, v2, v3 .. }
// all i have to be simple, two-level complex values unsupported
bool readStruct(QTextStream& str, QMap<QString, QString>* map);
}
Debugger::Debugger(QTextEdit *tEdit,
const QString &exePathParam,
const QString &workingDirectoryPathParam,
const QString &inputPathParam,
Assembler *assembler,
QWidget *parent,
bool i_verbose,
bool i_mimode)
: QObject(parent)
{
c = 0;
pid = 0;
firstStack = true;
firstAction = true;
firstRet = true;
textEdit = tEdit;
exePath = exePathParam;
workingDirectoryPath = workingDirectoryPathParam;
inputPath = inputPathParam;
registersOk = true;
this->assembler = assembler;
verbose = i_verbose;
mimode = i_mimode;
wincrflag = 0;
bitStack = 0;
systemStack = 16;
signStack = false;
run();
}
bool Debugger::run()
{
QSettings settings("SASM", "SASM");
if (settings.value("mode", QString("x86")).toString() == "x86")
addressSizeOffset = 4;
else
addressSizeOffset = 8;
#ifdef Q_OS_WIN32
QString gdb;
QString objdump;
wincrflag++;
if (settings.value("mode", QString("x86")).toString() == "x86") {
gdb = QCoreApplication::applicationDirPath() + "/MinGW/bin/gdb.exe";
objdump = QCoreApplication::applicationDirPath() + "/MinGW/bin/objdump.exe";
if (! QFile::exists(gdb))
gdb = QCoreApplication::applicationDirPath() + "/Windows/MinGW/bin/gdb.exe";
if (! QFile::exists(objdump))
objdump = QCoreApplication::applicationDirPath() + "/Windows/MinGW/bin/objdump.exe";
exitMessage = "mingw_CRTStartup";
} else {
gdb = QCoreApplication::applicationDirPath() + "/MinGW64/bin/gdb.exe";
objdump = QCoreApplication::applicationDirPath() + "/MinGW/bin/objdump.exe";
if (! QFile::exists(gdb))
gdb = QCoreApplication::applicationDirPath() + "/Windows/MinGW64/bin/gdb.exe";
if (! QFile::exists(objdump))
objdump = QCoreApplication::applicationDirPath() + "/Windows/MinGW/bin/objdump.exe";
exitMessage = "__fu0__set_invalid_parameter_handler";
}
#else
QString gdb = "gdb";
QString objdump = "objdump";
exitMessage = "libc_start_main";
#endif
cExitMessage = QRegExp("\\[Inferior .* exited");
connect(this, SIGNAL(wasStopped()), this, SLOT(emitStarted()));
//determine entry point
QProcess objdumpProcess;
QProcessEnvironment objdumpEnvironment = QProcessEnvironment::systemEnvironment();
QStringList objdumpArguments;
objdumpArguments << "-f" << exePath;
objdumpEnvironment.insert("LC_MESSAGES", "en_US");
objdumpProcess.setProcessEnvironment(objdumpEnvironment);
objdumpProcess.start(objdump, objdumpArguments);
objdumpProcess.waitForFinished();
QString objdumpResult = QString(objdumpProcess.readAllStandardOutput());
QString startAddress("start address ");
int index = objdumpResult.indexOf(startAddress);
objdumpResult = objdumpResult.mid(index + startAddress.length());
entryPoint = objdumpResult.toLongLong(0, 16);
QStringList arguments;
arguments << exePath;
if (mimode) {
arguments << "--interpreter=mi";
}
printLog(tr("Starting Debugger: ")+gdb+" "+arguments.join(" ")+"\n", Qt::darkGreen);
process = new QProcess;
process->start(gdb, arguments);
QObject::connect(process, SIGNAL(readyReadStandardOutput()), this, SLOT(readOutputToBuffer()));
QObject::connect(process, SIGNAL(readyReadStandardError()), this, SLOT(readOutputToBuffer()));
bufferTimer = new QTimer;
QObject::connect(bufferTimer, SIGNAL(timeout()), this, SLOT(processOutput()), Qt::QueuedConnection);
bufferTimer->start(10);
process->waitForStarted();
if (process->state() == QProcess::NotRunning)
{
// read output for debug information
readOutputToBuffer();
printLog(tr("Failed to start debugger!"), Qt::red);
if (buffer != "")
printLog(buffer, Qt::red);
if (errorBuffer != "")
printLog(errorBuffer, Qt::red);
delete process;
process = 0;
return false;
}
return true;
}
void Debugger::emitStarted()
{
disconnect(this, SIGNAL(wasStopped()), this, SLOT(emitStarted()));
emit started();
}
void Debugger::readOutputToBuffer()
{
if (!process)
return;
QByteArray error = process->readAllStandardError();
errorBuffer += QString::fromLocal8Bit(error.constData(), error.size());
QByteArray output = process->readAllStandardOutput();
buffer += QString::fromLocal8Bit(output.constData(), output.size());
}
void Debugger::processOutput()
{
bufferTimer->stop();
int index = buffer.indexOf(QString("(gdb)"));
int linefeedIndex = errorBuffer.indexOf("\n");
if (index != -1) { //if whole message ready to processing (end of whole message is "(gdb)")
if (verbose)
{
printLog(buffer+"\n", Qt::blue);
printLog(errorBuffer+"\n", Qt::blue);
}
QString output = buffer.left(index);
QString error = errorBuffer.left(linefeedIndex);
buffer.remove(0, index + 5);
//remove processed message
errorBuffer.remove(0, linefeedIndex + 1);
if(!mimode){
processMessage(output, error);
}else{
processMessageMiMode(output, error);
}
}
bufferTimer->start(10);
}
void Debugger::processMessage(QString output, QString error)
{
if (error.indexOf("PC register is not available") != -1) {
emit printLog(tr("GDB error\n"), Qt::red);
emit finished();
return;
}
if (c == 0) { //in start wait for printing of start gdb text like this:
/*GNU gdb (GDB) 7.4
Copyright (C) 2012 Free Software Foundation, Inc.
License GPLv3+: GNU GPL version 3 or later <http://gnu.org/licenses/gpl.html>
This is free software: you are free to change and redistribute it.
There is NO WARRANTY, to the extent permitted by law. Type "show copying"
and "show warranty" for details.
This GDB was configured as "i686-pc-mingw32".
For bug reporting instructions, please see:
<http://www.gnu.org/software/gdb/bugs/>...
Reading symbols from C:\Users\Dmitri\Dropbox\Projects\SASMstatic\release\Program\SASMprog.exe...
done.
(gdb)*/
#if 0
// not required anymore, since GDB can be specified
if (output.indexOf(QString(") 8.1.")) != -1) {
actionTypeQueue.enqueue(anyAction);
processAction(tr("GDB 8.1 not supported due to buggy implementation (b main [newline] run not producing a break). Please use a different version."));
QObject::disconnect(process, SIGNAL(readyReadStandardOutput()), this, SLOT(readOutputToBuffer()));
emit finished();
return;
}
#endif
c++;
doInput(QString("disas main\n"), none);
return;
}
if (c == 1) {
if (error.indexOf("No symbol", 0, Qt::CaseInsensitive)!=-1) {
dbgSymbols = false;
} else {
dbgSymbols = true;
}
}
if (dbgSymbols) { //debug symbols exists
if (c == 1 && output != " ") {
/*Dump of assembler code for function sasmStartL:
0x00401390 <+0>: xor %eax,%eax
0x00401392 <+2>: ret
0x00401393 <+3>: add %dl,-0x77(%ebp)
End of assembler dump.*/
//skip this information (for gdb 8.0)
c++;
gdb_cmd_run(); //perform Debugger::run(), that run program and open I/O files
return;
}
//determine run of program
//wait for message like this: Breakpoint 1, 0x00401390 in sasmStartL ()
if (c == 2 && output.indexOf(QString(" in ")) != -1) {
//set accordance between program in memory and program in file
//in example we need 0x00401390
//count offset
QRegExp r = QRegExp("0x[0-9a-fA-F]{8,16}");
int index = r.indexIn(output);
//take offset in hexadecimal representation (10 symbols) from string and convert it to int
offset = output.mid(index, r.matchedLength()).toULongLong(0, 16);
processLst(); //count accordance
c++;
actionTypeQueue.enqueue(ni);
doInput("info inferiors\n", none);
doInput(QString("p $sp\n"), infoStack);
}
//if an error with the wrong name of the section has occurred
if ((c == 2 && output.indexOf(QString("Make breakpoint pending on future shared library load")) != -1)
|| (c == 1 && output == " ")) {
actionTypeQueue.enqueue(anyAction);
processAction(tr("An error has occurred in the debugger. Please check the names of the sections."));
QObject::disconnect(process, SIGNAL(readyReadStandardOutput()), this, SLOT(readOutputToBuffer()));
emit finished();
}
} else { //debug symbols does not exists (for example, non-gcc linker)
if (c == 1) {
offset = entryPoint; //changes in processLst()
c++;
processLst(); //count accordance
gdb_cmd_run(); //perform Debugger::run(), that run program and open I/O files
return;
}
//determine run of program
//wait for message like this: Breakpoint 1, 0x00401390 in sasmStartL ()
if (c == 2 && output.indexOf(QString(" in ")) != -1) {
c++;
actionTypeQueue.enqueue(ni);
doInput("info inferiors\n", none);
doInput(QString("p $sp\n"), infoStack);
}
}
//interrupt while debugging (program was stopped)
#ifdef Q_OS_WIN32
QString interruptSig("SIGTRAP");
#else
QString interruptSig("SIGINT");
#endif
if (output.indexOf(interruptSig) != -1) {
stopped = true;
emit wasStopped();
QRegExp r = QRegExp("0x[0-9a-fA-F]{8,16}");
int index = r.indexIn(output);
if(index != -1){
quint64 lineNumber = output.mid(index, r.matchedLength()).toULongLong(0, 16);
bool found = false;
for (int i = lines.count() - 1; i >= 0; i--) {
if (lineNumber == lines[i].numInMem) {
lineNumber = lines[i].numInCode;
found = true;
break;
}
}
if (found) {
emit highlightLine(lineNumber);
}
}
return;
}
if (!pid) {
QRegExp r("Num +Description");
int index = output.indexOf(r);
if (index != -1) {
QString processString("process ");
r = QRegExp(processString + "[0-9]+");
index = output.indexOf(r);
output = output.mid(index + processString.length());
output = output.split(QChar(' ')).at(0);
pid = output.toULongLong(0, 10);
return;
}
}
//process all actions after start
if (c == 3)
if (output.indexOf(QString("$1 =")) == -1) //input file
processAction(output, error);
}
void Debugger::processAction(QString output, QString error)
{
bool backtrace = (output.indexOf(QRegExp("#\\d+ 0x[0-9a-fA-F]{8,16} in .* ()")) != -1);
if (output.indexOf(exitMessage) != -1 && !backtrace && firstRet) {
firstRet = false;
doInput("c\n", none);
return;
}
if (output.indexOf(QRegExp(cExitMessage)) != -1) { //if debug finished
//print output - message like bottom
/*Breakpoint 1, 0x08048510 in sasmStartL ()
"
" Continuing.
abccba123 //program output
567 //program output
[Inferior 1 (process 5693) exited normally]
" */
QRegExp continuingMsg("Continuing.\r?\n");
QRegExp inferiorMsg("\\[Inferior ");
int continuingIndex = continuingMsg.indexIn(output);
int continuingLength = continuingMsg.matchedLength();
int inferiorIndex = inferiorMsg.indexIn(output);
if (continuingIndex != -1) {
int outputLength = inferiorIndex - continuingIndex - continuingLength;
if (outputLength > 0) {
QString msg = output.mid(continuingIndex + continuingLength, outputLength); //program output
emit printOutput(msg);
}
}
//exit from debugging
QObject::disconnect(process, SIGNAL(readyReadStandardOutput()), this, SLOT(readOutputToBuffer()));
emit finished();
return;
}
if (actionTypeQueue.isEmpty()) {
return;
}
DebugActionType actionType = actionTypeQueue.dequeue();
if (actionType == breakpoint)
return;
if (actionType == si || actionType == ni || actionType == showLine) {
//message is: line number + data
//print line number and other data if si or ni and print line number only if showLine
//scan line number in memory
QRegExp r = QRegExp("0x[0-9a-fA-F]{8,16}");
int index = r.indexIn(output);
//print output
if (index > 1 && !firstAction) {
QString msg = output.left(index); //left part - probably output of program;
msg.remove(0, 1); //remove first whitespace
QRegExp continuingMsg("Continuing.\r?\n");
QRegExp breakpointMsg("\r?\nBreakpoint \\d+, ");
QRegExp threadMsg("\\[Switching to Thread [^\\]]*\\]\r?\n");
QRegExp signalMsg("\r?\n(Program received signal.*)");
msg.remove(continuingMsg);
msg.remove(breakpointMsg);
msg.remove(threadMsg);
if (signalMsg.indexIn(msg) != -1) {
QString recievedSignal = signalMsg.cap(1);
if (QRegExp("SIG(TRAP|INT)").indexIn(recievedSignal) == -1) {
emit printLog(recievedSignal, Qt::red);
}
msg.remove(signalMsg);
}
emit printOutput(msg);
}
firstAction = false;
quint64 lineNumber = output.mid(index, r.matchedLength()).toULongLong(0, 16);
//take line number in hexadecimal representation
//(10 symbols) in memory from string and convert it to int
//find line number in accordance array and get number line in file with code
bool found = false;
for (int i = lines.count() - 1; i >= 0; i--) {
if (lineNumber == lines[i].numInMem) {
lineNumber = lines[i].numInCode;
found = true;
break;
}
}
if (!found) {
//output = tr("Inside the macro or outside the program.") + '\n';
emit inMacro();
return;
} else { //if found highlight and print it
//highlight line number
emit highlightLine(lineNumber);
stopped = true;
emit wasStopped();
//print string number and all after it
//output = QString::number(lineNumber) + tr(" line") + output.mid(output.indexOf("()") + 2);
if (actionType == showLine)
return;
output.remove(0, output.indexOf("()") + 2);
}
}
if (actionType == anyAction) {
if (output[output.length() - 1] != '\n')
output += QChar('\n');
//process as ni or si
if (output.indexOf(QRegExp("0x[0-9a-fA-F]{8,16} in ")) != -1
&& !backtrace) {
actionTypeQueue.enqueue(showLine);
processAction(output);
}
if (!error.isEmpty()) {
if (output != " \n")
output = error + output;
else
output = error;
}
}
if (actionType == infoMemory) {
bool isValid = false;
if (output.indexOf(QString("No symbol")) == -1 &&
output.indexOf(QString("no debug info")) == -1 && output != QString(" ")) {
//if variable exists (isValid = true)
isValid = true;
int index = output.indexOf(QRegExp("\\$\\d+ = .*"));
if (index == -1)
isValid = false;
else {
output = output.right(output.length() - index);
output = output.right(output.length() - output.indexOf(QChar('=')) - 1);
for (int i = output.size() - 1; i >= 0; i--) {
if (output[i].isSpace())
output.remove(i, 1);
}
}
}
memoryInfo info;
if (isValid)
info.value = output;
info.isValid = isValid;
watches.append(info);
if (watchesCount == watches.size()) {
emit printMemory(watches);
watches.clear();
}
return;
}
if (actionType == infoRegisters) {
QTextStream registersStream(&output);
QList<registersInfo> registers;
registersInfo info;
QSettings settings("SASM", "SASM");
QSet<QString> general;
QString ip;
QSet<QString> segment;
segment << "cs" << "ds" << "ss" << "es" << "fs" << "gs";
QSet<QString> flags;
flags << "eflags" << "mxcsr";
QSet<QString> fpu_info;
fpu_info << "fctrl" << "fstat" << "ftag" << "fiseg" << "fioff" << "foseg" << "fooff" << "fop";
QRegExp mmx("mm\\d+");
QRegExp xmm("xmm\\d+");
QRegExp ymm("ymm\\d+");
QRegExp fpu_stack("st\\d+");
if (settings.value("mode", QString("x86")).toString() == "x86") {
//x86
general << "eax" << "ebx" << "ecx" << "edx" << "esi" << "edi" << "esp" << "ebp";
ip = "eip";
} else {
//x64
general << "rax" << "rbx" << "rcx" << "rdx" << "rsi" << "rdi" << "rsp" << "rbp" <<
"r8" << "r9" << "r10" << "r11" << "r12" << "r13" << "r14" << "r15";
ip = "rip";
}
for (int i = 0; !registersStream.atEnd(); i++) {
registersStream >> info.name;
if (info.name.isEmpty()) {
// last empty line
break;
}
if (general.contains(info.name) || segment.contains(info.name) || fpu_info.contains(info.name) ||
info.name == ip || flags.contains(info.name) || fpu_stack.exactMatch(info.name)) {
registersStream >> info.hexValue;
registersStream.skipWhiteSpace();
info.decValue = registersStream.readLine();
} else if (mmx.exactMatch(info.name) || xmm.exactMatch(info.name) || ymm.exactMatch(info.name)) {
//TODO
QMap<QString, QString> fields;
if (!readStruct(registersStream, &fields)) {
// bad news
emit printLog(QString("can not parse register data: ") + info.name + "\n", Qt::red);
break;
}
if (mmx.exactMatch(info.name))
info.decValue = fields["v8_int8"];
else if (xmm.exactMatch(info.name))
info.decValue = fields["uint128"];
else if (ymm.exactMatch(info.name))
info.decValue = fields["v2_int128"];
info.hexValue = "";
} else {
// unknown register, try to skip it.
registersStream.readLine();
emit printLog(QString("unknown register: ") + info.name + "\n", Qt::red);
continue;
}
registers.append(info);
if (i == 0 && info.name != "eax" && info.name != "rax" && registersOk) {
doInput(QString("info registers\n"), infoRegisters);
registersOk = false;
return;
}
}
emit printRegisters(registers);
return;
}
if (actionType == infoStack) {
QTextStream stackStream(&output);
QList<stackInfo> stacks;
QList<quint64> stacks2;
QRegExp r = QRegExp("0x[0-9a-fA-F]{6,12}");
int index;
if (firstStack){
firstStack = false;
index = r.indexIn(output);
if(index != -1)
stackBottom = output.mid(index, r.matchedLength()).toULongLong(0, 16);// - addressSizeOffset;
return;
}
stackInfo info;
quint64 address;
quint64 value;
QString temporary_line; // TODO
for (int i = 0; !stackStream.atEnd(); i++) {
//info.value = stackStream.readLine();
stackStream >> info.value;
index = info.value.indexOf(QString("Cannot access memory"));
if (index != -1){
emit printLog(QString("Error showing stack"), Qt::red);
return;
}
index = r.indexIn(info.value);
address = info.value.mid(index, r.matchedLength()).toULongLong(0, 16);
if (index == -1 || address >= stackBottom) {
break;
}
for(int j = 0; j < 2; j++){
stackStream >> info.value;
index = r.indexIn(info.value);
value = info.value.mid(index, r.matchedLength()).toULongLong(0, 16);
stackStream >> info.value;
index = r.indexIn(info.value);
value += (info.value.mid(index, r.matchedLength()).toULongLong(0, 16)) << 32;
for(int k = 0; k < 8; k++){ //per line
if (address + k + j*8 >= stackBottom) {
goto exit;
}
stacks2.append((value >> 8*k)&0xff);
}
}
}
exit:
quint64 stackelem;
stackInfo bottom;
bottom.address = QString("0x") + QString::number(stackBottom, 16);
bottom.value = QString("Bottom");
stacks.append(bottom);
for (int i = stacks2.size()-1; i >= 0; i-=bitStack){
stackelem = stacks2[i];
for (int j = 1; j < bitStack; j++){
if (i-j<0){
info.value = QString("(+") + QString::number(bitStack-j) + QString(" unused Byte) ") + QString::number(stackelem, systemStack);
info.address = QString("0x") + QString::number(stackBottom-bitStack-(stacks2.size()-1-i), 16);
stacks.append(info);
goto exit2;
}
stackelem = (stackelem << 8) + stacks2[i-j];
}
if (signStack)
info.value = signedNumberStack(stackelem);
else
info.value = QString::number(stackelem, systemStack);
info.address = QString("0x") + QString::number(stackBottom-bitStack-(stacks2.size()-1-i), 16);
stacks.append(info);
}
exit2:
if(stacks.size()>=100){
info.address = QString("");
info.value = QString("...");
stacks.append(info);
}
emit printStack(stacks);
return;
}
if (output == QString("\r\n") || output == QString("\n") ||
output == QString("\r\n\n") || output == QString("\n\n")) //if empty
return;
//print information to log field
emit printLog(output);
}
void Debugger::processMessageMiMode(QString output, QString error)
{
if (error.indexOf("PC register is not available") != -1) {
emit printLog(tr("GDB error\n"), Qt::red);
emit finished();
return;
}
if (c == 0) { //in start wait for printing of start gdb text like this:
/*GNU gdb (GDB) 7.4
Copyright (C) 2012 Free Software Foundation, Inc.
License GPLv3+: GNU GPL version 3 or later <http://gnu.org/licenses/gpl.html>
This is free software: you are free to change and redistribute it.
There is NO WARRANTY, to the extent permitted by law. Type "show copying"
and "show warranty" for details.
This GDB was configured as "i686-pc-mingw32".
For bug reporting instructions, please see:
<http://www.gnu.org/software/gdb/bugs/>...
Reading symbols from C:\Users\Dmitri\Dropbox\Projects\SASMstatic\release\Program\SASMprog.exe...
done.
(gdb)*/
c++;
doInput(QString("disas main\n"), none);
return;
}
if (c == 1) {
if (error.indexOf("No symbol", 0, Qt::CaseInsensitive)!=-1) {
dbgSymbols = false;
} else {
dbgSymbols = true;
}
}
if (dbgSymbols) { //debug symbols exists
if (c == 1 && output != " ") {
/*Dump of assembler code for function sasmStartL:
0x00401390 <+0>: xor %eax,%eax
0x00401392 <+2>: ret
0x00401393 <+3>: add %dl,-0x77(%ebp)
End of assembler dump.*/
//skip this information (for gdb 8.0)
c++;
gdb_cmd_run(); //perform Debugger::run(), that run program and open I/O files
return;
}
//determine run of program
//wait for message like this: Breakpoint 1, 0x00401390 in sasmStartL ()
if (c == 2 && output.indexOf(QString("*stopped,reason=\"breakpoint-hit")) != -1) {
//set accordance between program in memory and program in file
//in example we need 0x00401390
//count offset
QRegExp r = QRegExp("addr=\"0x[0-9a-fA-F]{8,16}");
int index = r.indexIn(output);
//take offset in hexadecimal representation (10 symbols) from string and convert it to int
offset = output.mid(index+6, r.matchedLength()-6).toULongLong(0, 16);
processLst(); //count accordance
c++;
actionTypeQueue.enqueue(ni);
doInput("info inferiors\n", none);
doInput(QString("p $sp\n"), infoStack);
}
//if an error with the wrong name of the section has occurred
if ((c == 2 && output.indexOf(QString("Make breakpoint pending on future shared library load")) != -1)
|| (c == 1 && output == " ")) {
actionTypeQueue.enqueue(anyAction);
processActionMiMode(tr("An error has occurred in the debugger. Please check the names of the sections."));
QObject::disconnect(process, SIGNAL(readyReadStandardOutput()), this, SLOT(readOutputToBuffer()));
emit finished();
}
} else { //debug symbols does not exists (for example, non-gcc linker)
if (c == 1) {
offset = entryPoint; //changes in processLst()
c++;
processLst(); //count accordance
gdb_cmd_run(); //perform Debugger::run(), that run program and open I/O files
return;
}
//determine run of program
//wait for message like this: Breakpoint 1, 0x00401390 in sasmStartL ()
if (c == 2 && output.indexOf(QString("*stopped,reason=\"breakpoint-hit")) != -1) {
c++;
actionTypeQueue.enqueue(ni);
doInput("info inferiors\n", none);
doInput(QString("p $sp\n"), infoStack);
}
}
//interrupt while debugging (program was stopped)
#ifdef Q_OS_WIN32
QString interruptSig("SIGTRAP");
#else
QString interruptSig("SIGINT");
#endif
if (output.indexOf(interruptSig) != -1) {
stopped = true;
emit wasStopped();
QRegExp r = QRegExp("addr=\"0x[0-9a-fA-F]{8,16}");
int index = r.indexIn(output);
if(index != -1){
quint64 lineNumber = output.mid(index+6, r.matchedLength()-6).toULongLong(0, 16);
bool found = false;
for (int i = lines.count() - 1; i >= 0; i--) {
if (lineNumber == lines[i].numInMem) {
lineNumber = lines[i].numInCode;
found = true;
break;
}
}
if (found) {
emit highlightLine(lineNumber);
}
}
return;
}
if (!pid) {
QRegExp r("Num +Description");
int index = output.indexOf(r);
if (index != -1) {
QString processString("process ");
r = QRegExp(processString + "[0-9]+");
index = output.indexOf(r);
output = output.mid(index + processString.length());
output = output.split(QChar(' ')).at(0);
pid = output.toULongLong(0, 10);
return;
}
}
if (output.indexOf(QString("&\"p"))!=-1 && firstPrint){
firstPrint = false;
return;
}
//process all actions after start
if (c == 3) //if (output.indexOf(QString("$1 =")) == -1 && output.indexOf(QString("&\"si")) == -1 && output.indexOf(QString("&\"ni")) == -1 &&) //input file
if (output.indexOf(QRegExp("\\$1 =|&\"si|&\"ni|&\"c")) == -1 || output.indexOf(QString("&\"clear")) != -1)
processActionMiMode(output, error);
}
void Debugger::processActionMiMode(QString output, QString error)
{
bool backtrace = (output.indexOf(QRegExp("#\\d+ 0x[0-9a-fA-F]{8,16} in .* ()")) != -1);
if (output.indexOf(exitMessage) != -1 && !backtrace) {
doInput("c\n", none);
return;
}
if (output.indexOf(QRegExp(cExitMessage)) != -1) { //if debug finished
//print output - message like bottom
/*...output...~"[Inferior 1 (process 7372) exited normally]\n"
=thread-exited,id="1",group-id="i1"\u000a=thread-group-exited,id="i1",exit-code="0"
*stopped,reason="exited-normally"\u000a"*/
QString msg = output.left(output.lastIndexOf(QChar('~'))); //program output
msg.remove(0,2); //rm first view whitespace
QRegExp threadMsg("=thread");
while (threadMsg.indexIn(msg) != -1)
msg.remove(threadMsg.indexIn(msg), msg.indexOf(QChar('\n'), threadMsg.indexIn(msg) + 7));
emit printOutput(msg);
//exit from debugging
QObject::disconnect(process, SIGNAL(readyReadStandardOutput()), this, SLOT(readOutputToBuffer()));
emit finished();
return;
}
if (actionTypeQueue.isEmpty()) {
return;
}
DebugActionType actionType = actionTypeQueue.dequeue();
if (actionType == breakpoint)
return;
if(actionType == ni && firstAction){
firstAction = false;
QRegExp r = QRegExp("addr=\"0x[0-9a-fA-F]{8,16}");
int index = r.indexIn(output);
quint64 lineNumber = output.mid(index+6, r.matchedLength()-6).toULongLong(0, 16);
bool found = false;
for (int i = lines.count() - 1; i >= 0; i--) {
if (lineNumber == lines[i].numInMem) {
lineNumber = lines[i].numInCode;
found = true;
break;
}
}
if (!found) {
//output = tr("Inside the macro or outside the program.") + '\n';
emit inMacro();
return;
} else { //if found highlight and print it
//highlight line number
emit highlightLine(lineNumber);
stopped = true;
emit wasStopped();
return;
}
}
if (actionType == si || actionType == ni || actionType == showLine) {
//message is: line number + data
//print line number and other data if si or ni and print line number only if showLine
//scan line number in memory
QRegExp r = QRegExp("addr=\"0x[0-9a-fA-F]{8,16}");
int index = r.indexIn(output);
int msgIndex = output.indexOf(QChar('~'));
//print output
if (msgIndex > 2+wincrflag) {
QString msg = output.left(msgIndex); //left part - probably output of program;
QRegExp asyncMsg("=thread|\\*running|\\*stopped|=library-|=traceframe-|=tsv-|=breakpoint|=record|=cmd-|=memory");
QRegExp signalMsg("\r?\n(Program received signal.*)");
while (asyncMsg.indexIn(msg) != -1){
msg.remove(asyncMsg.indexIn(msg), msg.indexOf(QChar('\n'), asyncMsg.indexIn(msg) + 7));
}
if (signalMsg.indexIn(msg) != -1) {
QString recievedSignal = signalMsg.cap(1);
if (QRegExp("SIG(TRAP|INT)").indexIn(recievedSignal) == -1) {
emit printLog(recievedSignal, Qt::red);
}
msg.remove(signalMsg);
}
msg.remove(0,2+wincrflag); //rm first view whitespace
emit printOutput(msg);
}
quint64 lineNumber = output.mid(index+6, r.matchedLength()-6).toULongLong(0, 16);
//take line number in hexadecimal representation
//(10 symbols) in memory from string and convert it to int
//find line number in accordance array and get number line in file with code
bool found = false;
for (int i = lines.count() - 1; i >= 0; i--) {
if (lineNumber == lines[i].numInMem) {
lineNumber = lines[i].numInCode;
found = true;
break;
}
}
if (!found) {
//output = tr("Inside the macro or outside the program.") + '\n';
emit inMacro();
} else { //if found highlight and print it
//highlight line number
emit highlightLine(lineNumber);
stopped = true;
emit wasStopped();
}
return;
}
if (actionType == anyAction) {
if (output[output.length() - 1] != '\n')
output += QChar('\n');
//process as ni or si
if (output.indexOf(QString("*stopped,reason")) != -1
&& !backtrace) {
actionTypeQueue.enqueue(showLine);
processActionMiMode(output);
}
if (!error.isEmpty()) {
if (output != " \n")
output = error + output;
else
output = error;
}
}
if (actionType == infoMemory) {
bool isValid = false;
if (output.indexOf(QString("No symbol")) == -1 &&
output.indexOf(QString("no debug info")) == -1 && output != QString(" ")) {
//if variable exists (isValid = true)
isValid = true;
int index = output.indexOf(QRegExp("\\$\\d+ = .*"));
if (index == -1)
isValid = false;
else {
QStringList tmpList;
bool firstElement = true;
for(QString t : output.split(QString("~\""))){
if (t.isEmpty()){
continue;
}
if (firstElement){
firstElement = false;
continue;
}
tmpList.append(t.left(t.indexOf(QChar('\"'))));
}