forked from qt-creator/qt-creator
ec40996904
Unblock COM reading. Ensure process is started only once. Read out registers. Read gdb memory request properly.
321 lines
9.1 KiB
C++
321 lines
9.1 KiB
C++
/**************************************************************************
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**
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** This file is part of Qt Creator
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**
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** Copyright (c) 2009 Nokia Corporation and/or its subsidiary(-ies).
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**
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** Contact: Nokia Corporation (qt-info@nokia.com)
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**
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** Commercial Usage
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**
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** Licensees holding valid Qt Commercial licenses may use this file in
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** accordance with the Qt Commercial License Agreement provided with the
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** Software or, alternatively, in accordance with the terms contained in
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** a written agreement between you and Nokia.
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**
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** GNU Lesser General Public License Usage
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**
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** Alternatively, this file may be used under the terms of the GNU Lesser
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** General Public License version 2.1 as published by the Free Software
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** Foundation and appearing in the file LICENSE.LGPL included in the
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** packaging of this file. Please review the following information to
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** ensure the GNU Lesser General Public License version 2.1 requirements
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** will be met: http://www.gnu.org/licenses/old-licenses/lgpl-2.1.html.
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**
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** If you are unsure which license is appropriate for your use, please
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** contact the sales department at http://www.qtsoftware.com/contact.
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**
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**************************************************************************/
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#include "trkutils.h"
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#include <QtCore/QDebug>
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#define logMessage(s) do { qDebug() << "TRKCLIENT: " << s; } while (0)
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namespace trk {
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QByteArray hexNumber(uint n, int digits)
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{
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QByteArray ba = QByteArray::number(n, 16);
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if (digits == 0 || ba.size() == digits)
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return ba;
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return QByteArray(digits - ba.size(), '0') + ba;
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}
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QString TrkResult::toString() const
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{
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QString res = stringFromByte(code) + "[" + stringFromByte(token);
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res.chop(1);
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return res + "] " + stringFromArray(data);
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}
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QByteArray frameMessage(byte command, byte token, const QByteArray &data)
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{
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byte s = command + token;
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for (int i = 0; i != data.size(); ++i)
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s += data.at(i);
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byte checksum = 255 - (s & 0xff);
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//int x = s + ~s;
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//logMessage("check: " << s << checksum << x;
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QByteArray response;
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response.append(char(command));
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response.append(char(token));
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response.append(data);
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response.append(char(checksum));
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QByteArray encodedData = encode7d(response);
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ushort encodedSize = encodedData.size() + 2; // 2 x 0x7e
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QByteArray ba;
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ba.append(char(0x01));
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ba.append(char(0x90));
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ba.append(char(encodedSize / 256));
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ba.append(char(encodedSize % 256));
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ba.append(char(0x7e));
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ba.append(encodedData);
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ba.append(char(0x7e));
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return ba;
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}
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/* returns 0 if array doesn't represent a result,
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otherwise returns the length of the result data */
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ushort isValidTrkResult(const QByteArray &buffer)
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{
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if (buffer.length() < 9)
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return 0;
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if (buffer.at(0) != 0x01 || byte(buffer.at(1)) != 0x90) {
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return 0;
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}
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ushort len = extractShort(buffer.data() + 2);
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//logMessage(" READ BUF: " << stringFromArray(*buffer));
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if (buffer.size() < len + 4) {
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return 0;
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}
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if (byte(buffer.at(4)) != 0x7e) {
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return 0;
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}
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if (byte(buffer.at(4 + len - 1)) != 0x7e) {
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return 0;
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}
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return len;
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}
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TrkResult extractResult(QByteArray *buffer)
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{
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TrkResult result;
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ushort len = isValidTrkResult(*buffer);
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if (!len)
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return result;
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// FIXME: what happens if the length contains 0xfe?
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// Assume for now that it passes unencoded!
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QByteArray data = decode7d(buffer->mid(5, len - 2));
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*buffer->remove(0, 4 + len);
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byte sum = 0;
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for (int i = 0; i < data.size(); ++i) // 3 = 2 * 0xfe + sum
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sum += byte(data.at(i));
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if (sum != 0xff)
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logMessage("*** CHECKSUM ERROR: " << byte(sum));
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result.code = data.at(0);
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result.token = data.at(1);
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result.data = data.mid(2, data.size() - 3);
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//logMessage(" REST BUF: " << stringFromArray(*buffer));
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//logMessage(" CURR DATA: " << stringFromArray(data));
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//QByteArray prefix = "READ BUF: ";
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//logMessage((prefix + "HEADER: " + stringFromArray(header).toLatin1()).data());
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return result;
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}
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ushort extractShort(const char *data)
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{
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return byte(data[0]) * 256 + byte(data[1]);
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}
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uint extractInt(const char *data)
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{
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uint res = byte(data[0]);
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res *= 256; res += byte(data[1]);
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res *= 256; res += byte(data[2]);
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res *= 256; res += byte(data[3]);
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return res;
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}
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QString quoteUnprintableLatin1(const QByteArray &ba)
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{
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QString res;
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char buf[10];
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for (int i = 0, n = ba.size(); i != n; ++i) {
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const byte c = ba.at(i);
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if (isprint(c)) {
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res += c;
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} else {
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qsnprintf(buf, sizeof(buf) - 1, "\\%x", int(c));
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res += buf;
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}
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}
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return res;
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}
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QByteArray decode7d(const QByteArray &ba)
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{
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QByteArray res;
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res.reserve(ba.size() + 2);
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for (int i = 0; i < ba.size(); ++i) {
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byte c = byte(ba.at(i));
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if (c == 0x7d) {
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++i;
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c = 0x20 ^ byte(ba.at(i));
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}
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res.append(c);
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}
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//if (res != ba)
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// logMessage("DECODED: " << stringFromArray(ba)
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// << " -> " << stringFromArray(res));
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return res;
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}
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QByteArray encode7d(const QByteArray &ba)
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{
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QByteArray res;
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res.reserve(ba.size() + 2);
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for (int i = 0; i < ba.size(); ++i) {
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byte c = byte(ba.at(i));
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if (c == 0x7e || c == 0x7d) {
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res.append(0x7d);
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res.append(0x20 ^ c);
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} else {
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res.append(c);
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}
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}
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//if (res != ba)
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// logMessage("ENCODED: " << stringFromArray(ba)
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// << " -> " << stringFromArray(res));
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return res;
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}
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// FIXME: Use the QByteArray based version below?
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QString stringFromByte(byte c)
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{
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return QString("%1 ").arg(c, 2, 16, QChar('0'));
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}
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QString stringFromArray(const QByteArray &ba, int maxLen)
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{
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QString str;
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QString ascii;
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const int size = maxLen == -1 ? ba.size() : qMin(ba.size(), maxLen);
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for (int i = 0; i < size; ++i) {
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//if (i == 5 || i == ba.size() - 2)
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// str += " ";
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int c = byte(ba.at(i));
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str += QString("%1 ").arg(c, 2, 16, QChar('0'));
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if (i >= 8 && i < ba.size() - 2)
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ascii += QChar(c).isPrint() ? QChar(c) : QChar('.');
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}
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if (size != ba.size()) {
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str += "...";
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ascii += "...";
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}
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return str + " " + ascii;
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}
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void appendByte(QByteArray *ba, byte b)
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{
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ba->append(b);
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}
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void appendShort(QByteArray *ba, ushort s, Endianness endian)
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{
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if (endian == BigEndian) {
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ba->append(s / 256);
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ba->append(s % 256);
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} else {
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ba->append(s % 256);
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ba->append(s / 256);
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}
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}
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void appendInt(QByteArray *ba, uint i, Endianness endian)
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{
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int b3 = i % 256; i -= b3; i /= 256;
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int b2 = i % 256; i -= b2; i /= 256;
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int b1 = i % 256; i -= b1; i /= 256;
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int b0 = i % 256; i -= b0; i /= 256;
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if (endian == BigEndian) {
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ba->append(b0);
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ba->append(b1);
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ba->append(b2);
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ba->append(b3);
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} else {
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ba->append(b3);
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ba->append(b2);
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ba->append(b1);
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ba->append(b0);
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}
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}
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void appendString(QByteArray *ba, const QByteArray &str, Endianness endian, bool appendNullTerminator)
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{
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const int n = str.size();
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const int fullSize = n + (appendNullTerminator ? 1 : 0);
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appendShort(ba, fullSize, endian); // count the terminating \0
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for (int i = 0; i != n; ++i)
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ba->append(str.at(i));
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if (appendNullTerminator)
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ba->append('\0');
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}
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QByteArray errorMessage(byte code)
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{
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switch (code) {
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case 0x00: return "No error";
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case 0x01: return "Generic error in CWDS message";
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case 0x02: return "Unexpected packet size in send msg";
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case 0x03: return "Internal error occurred in CWDS";
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case 0x04: return "Escape followed by frame flag";
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case 0x05: return "Bad FCS in packet";
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case 0x06: return "Packet too long";
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case 0x07: return "Sequence ID not expected (gap in sequence)";
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case 0x10: return "Command not supported";
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case 0x11: return "Command param out of range";
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case 0x12: return "An option was not supported";
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case 0x13: return "Read/write to invalid memory";
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case 0x14: return "Read/write invalid registers";
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case 0x15: return "Exception occurred in CWDS";
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case 0x16: return "Targeted system or thread is running";
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case 0x17: return "Breakpoint resources (HW or SW) exhausted";
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case 0x18: return "Requested breakpoint conflicts with existing one";
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case 0x20: return "General OS-related error";
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case 0x21: return "Request specified invalid process";
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case 0x22: return "Request specified invalid thread";
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}
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return "Unknown error";
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}
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uint swapEndian(uint in)
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{
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return (in>>24) | ((in<<8) & 0x00FF0000) | ((in>>8) & 0x0000FF00) | (in<<24);
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}
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int TrkResult::errorCode() const
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{
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// NAK means always error, else data sized 1 with a non-null element
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const bool isNAK = code == 0xff;
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if (data.size() != 1 && !isNAK)
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return 0;
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if (const int errorCode = data.at(0))
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return errorCode;
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return isNAK ? 0xff : 0;
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}
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} // namespace trk
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