213 lines
7.4 KiB
C++
213 lines
7.4 KiB
C++
#include "gdbprocess.h"
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GDBProcess::GDBProcess(QObject *parent) : QObject(parent)
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{
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process=new QProcess();
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}
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GDBProcess::~GDBProcess()
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{
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delete process;
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}
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//运行一条GDB命令并获取输出字符串
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QString GDBProcess::runCmd(const QString &cmd)
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{
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process->readAllStandardOutput();
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process->write(cmd.toStdString().c_str());
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QString res="";
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do{
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process->waitForReadyRead(1);
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res+=process->readAllStandardOutput();
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}while(!res.endsWith("(gdb) "));
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return res;
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}
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//启动GDB进程
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void GDBProcess::start()
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{
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process->setProgram(QCoreApplication::applicationDirPath()+"/gdb/gdb.exe");//设置程序路径
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process->setWorkingDirectory(QCoreApplication::applicationDirPath()+"/gdb");//设置工作路径
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process->setNativeArguments("-q");//设置gdb在安静模式下打开
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process->start();//QProcess::Unbuffered|QProcess::ReadWrite);
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runCmd("set confirm off\r\n");//设置不要手动确认
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runCmd("set print pretty on\r\n");//设置结构体规范打印
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}
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//停止GDB进程
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void GDBProcess::stop()
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{
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if(process->state()!=QProcess::NotRunning)
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process->kill();
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}
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//命令GDB连接到远程目标,参数为"地址:端口号"
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void GDBProcess::connectToRemote(const QString &addr)
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{
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runCmd("target remote "+addr+"\r\n");
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runCmd("monitor resume\r\n");//恢复目标程序运行
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}
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//命令GDB从远处目标断开
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void GDBProcess::disconnectFromRemote()
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{
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runCmd("disconnect\r\n");
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}
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//设定临时符号文件名,文件位于GDB程序目录下
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void GDBProcess::setTempSymbolFileName(const QString &name)
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{
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tempSymbolFileName=name;
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}
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//加载符号文件,将指定文件复制到临时文件中,并加载到GDB中
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void GDBProcess::loadSymbolFile(const QString &path)
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{
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unloadSymbolFile();//确保卸载当前的临时文件
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QString tempPath=QCoreApplication::applicationDirPath()+"/gdb/"+tempSymbolFileName;//拼接临时文件路径
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QFile::copy(path,tempPath);//将所选符号文件复制为临时文件
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runCmd("symbol-file "+tempSymbolFileName+"\r\n");//设置符号文件
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}
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//卸载符号文件
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void GDBProcess::unloadSymbolFile()
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{
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runCmd("symbol-file\r\n");//取消符号文件,解除文件占用
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QString tempPath=QCoreApplication::applicationDirPath()+"/gdb/"+tempSymbolFileName;//拼接临时文件路径
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QFile::remove(tempPath);//删除复制过来的临时文件
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}
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//设置display列表
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void GDBProcess::setDisplayList(QStringList &list)
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{
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runCmd("delete display\r\n");//删除之前发送的变量列表
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foreach(QString name,list)//向display表中依次添加变量名
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runCmd("display "+name+"\r\n");
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}
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//截取display指令所返回字符串中指定变量名的变量值
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QString GDBProcess::captureValueFromDisplay(const QString &rawDisplay, const QString &name)
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{
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QString regName="";
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for(int i=0;i<name.length();i++)//将变量名每个转换为16进制格式,用于正则匹配
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regName+=QString("\\x%1").arg(name.at(i).unicode(),0,16);
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QRegExp rx(QString("\\d+:\\s%1\\s=\\s(.*)\\r\\n[\\d\\(]").arg(regName));//正则匹配模板,匹配选中的变量名并截取出变量值
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rx.setMinimal(true);//使用非贪心模式
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if(rx.indexIn(rawDisplay)!=-1)
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return rx.cap(1);//正则中截取出的字符串即为变量当前值
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else
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return "";
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}
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//尝试将display所返回的变量值转为double,返回值为是否转换成功
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bool GDBProcess::getDoubleFromDisplayValue(const QString &rawValue, double &result)
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{
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if(rawValue.isEmpty())
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return false;
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if(rawValue.contains('{')||rawValue.contains('(')
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||rawValue.contains('<')||rawValue.contains('['))//若含有这些符号,表示该变量可能为复合类型,不能被解析
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return false;
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result=rawValue.mid(0,rawValue.indexOf(' ')).toDouble();
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return true;
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}
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//将gdb所返回的无符号数组变量值转换为uint数组
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QList<uint> GDBProcess::getUintArrayFromDisplay(const QString &rawDisplay)
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{
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QRegExp rx("\\{(.*)\\}");
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rx.indexIn(rawDisplay);
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QString raw=rx.cap(1);
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raw=raw.replace("\r\n ","");
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QStringList rawList=raw.split(", ");
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QList<uint> numList;
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for(int index=0;index<rawList.size();index++)
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{
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if(rawList[index].contains('<'))//查找并展开重复值
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{
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QRegExp repeatRx("(\\d+)\\s<repeats\\s(\\d+)\\stimes>");
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repeatRx.indexIn(rawList[index]);
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int num=repeatRx.cap(1).toUInt();
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int times=repeatRx.cap(2).toUInt();
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for(int i=0;i<times;i++)
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numList<<num;
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}
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else
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{
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numList<<rawList[index].toUInt();
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}
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}
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return numList;
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}
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//命令GDB设定变量值
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void GDBProcess::setVarValue(const QString &varFullName, double value)
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{
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runCmd(QString("set %1=%2\r\n").arg(varFullName).arg(value));
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}
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//判断指定变量名是否为可展开类型
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bool GDBProcess::checkExpandableType(const QString &varFullName)
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{
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QString whatis=runCmd(QString("whatis %1\r\n").arg(varFullName));//先使用whatis指令判断数组和函数指针
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whatis.remove("type = ");
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whatis.remove("\r\n(gdb) ");
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if(whatis.contains("["))
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return true;
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if(whatis.contains('('))
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return false;
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QString ptype=runCmd(QString("ptype %1\r\n").arg(varFullName));//再使用ptype指令判断是否是其他可展开类型
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ptype.remove("type = ");
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if(ptype.startsWith("struct")||ptype.startsWith("union")||ptype.startsWith("class"))
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return true;
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return false;
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}
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//从GDB原始输出(info variables/ptype等指令)中解析变量列表
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QStringList GDBProcess::getVarListFromRawOutput(const QString &rawVarList)
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{
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QStringList list;
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QRegExp rootRx("\\s([^ (]*\\(\\*|)([^ ):]+)(\\)\\(.*\\)|\\s:\\s\\d+|);");//正则匹配模板
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rootRx.setMinimal(true);//非贪心匹配
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int pos=0;
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while((pos=rootRx.indexIn(rawVarList,pos))!=-1)
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{
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QString name=rootRx.cap(2);//获取截取出的变量名部分
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if(name.contains('*'))//手动剔除'*'
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name.remove('*');
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if(name.contains('['))//手动剔除数组长度部分
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name.remove(QRegExp("\\[\\d+\\]"));
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if(name!="const")//排除解析出来是保留字的情况
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list.append(name);
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pos+=rootRx.matchedLength();
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}
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return list;
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}
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//在raw字符串(可能由ptype等指令输出)中删除由'{}'嵌套的部分(跳过前offset个字符)
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void GDBProcess::removeInnerSection(QString &raw, int offset)
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{
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for(int startPos=offset;startPos<raw.length();startPos++)//startPos指针向后移动查找'{'
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{
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if(raw.at(startPos)=='{')//若找到'{',开始寻找对应的'}'
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{
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int innerLayer=1;//当前endPos所在的嵌套层级
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for(int endPos=startPos+1;endPos<raw.length();endPos++)//endPos指针向后查找对应的'}'
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{
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if(raw.at(endPos)=='{')//每遇到一个'{'则嵌套层级+1
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innerLayer++;
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else if(raw.at(endPos)=='}')//每遇到一个'}'则嵌套层级-1
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innerLayer--;
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if(raw.at(endPos)=='}' && innerLayer==0)//若遇到'}'时嵌套层级为0,表示找到了对应的'}'
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{
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raw.remove(startPos,endPos-startPos+1);//删除从'{'到'}'的子串
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startPos--;
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break;
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}
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}
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}
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}
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}
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