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/**************************************************************************
**
** This file is part of Qt Creator
**
** Copyright (c) 2011 Nokia Corporation and/or its subsidiary(-ies).
**
** Contact: Nokia Corporation (qt-info@nokia.com)
**
** No Commercial Usage
**
** This file contains pre-release code and may not be distributed.
** You may use this file in accordance with the terms and conditions
** contained in the Technology Preview License Agreement accompanying
** this package.
**
** GNU Lesser General Public License Usage
**
** Alternatively, 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.
**
** If you have questions regarding the use of this file, please contact
** Nokia at qt-info@nokia.com.
**
**************************************************************************/
#include "cdbassembler.h"
#include "cdbdebugoutput.h"
#include "cdbengine_p.h"
#include "cdbsymbolgroupcontext.h"
#include "registerhandler.h"
#include <QtCore/QVector>
namespace Debugger {
namespace Internal {
Registers getRegisters(CIDebugControl *ctl,
CIDebugRegisters *ireg,
QString *errorMessage, int base)
{
ULONG count;
HRESULT hr = ireg->GetNumberRegisters(&count);
if (FAILED(hr)) {
*errorMessage= CdbCore::msgComFailed("GetNumberRegisters", hr);
return Registers();
}
if (!count)
return Registers();
Registers registers(count);
// Retrieve names
char buf[MAX_PATH];
for (ULONG r = 0; r < count; r++) {
hr = ireg->GetDescription(r, buf, MAX_PATH - 1, 0, 0);
if (FAILED(hr)) {
*errorMessage= CdbCore::msgComFailed("GetDescription", hr);
return Registers();
}
registers[r].name = QByteArray(buf);
}
// get values
QVector<DEBUG_VALUE> values(count);
DEBUG_VALUE *valuesPtr = &(*values.begin());
memset(valuesPtr, 0, count * sizeof(DEBUG_VALUE));
hr = ireg->GetValues(count, 0, 0, valuesPtr);
if (FAILED(hr)) {
*errorMessage= CdbCore::msgComFailed("GetValues", hr);
return Registers();
}
if (base < 2)
base = 10;
for (ULONG r = 0; r < count; r++)
registers[r].value = CdbCore::debugValueToString(values.at(r), 0, base, ctl);
return registers;
}
/* Output parser for disassembler lines: Parse a disassembler line:
* \code
module!class::foo:
004017cf cc int 3
77 mainwindow.cpp 004018ff 8d4da8 lea ecx,[ebp-0x58]
\endcode
* and reformat to something like:
* \code
00000001400043c9 mainwindow.cpp+296 90 nop
00000001400043ca mainwindow.cpp+296 488d8c24d8020000 lea rcx,[rsp+2D8h]
00000001400043d2 mainwindow.cpp+296 ff1500640300 call qword ptr [gitgui!_imp_??1QStringQEAAXZ (00000001`4003a7d8)]
\endcode
* Reformatting brings address to the front for disassembler agent's extracting
* the address for location marker to work.
* Moves symbol information to the 2nd column, using the source file lines as
* symbol until it encounters a C++ symbol (function entered), from which then on
* it uses that symbol, indicating the offset.
*/
class DisassemblerOutputParser
{
Q_DISABLE_COPY(DisassemblerOutputParser)
public:
explicit DisassemblerOutputParser(QTextStream &str, int addressFieldWidth = 0);
void parse(const QStringList &l);
private:
enum ParseResult { ParseOk, ParseIgnore, ParseFailed };
ParseResult parseDisassembled(const QString &in);
const int m_addressFieldWidth;
QTextStream &m_str;
QString m_sourceSymbol;
int m_sourceSymbolOffset;
};
DisassemblerOutputParser::DisassemblerOutputParser(QTextStream &str, int addressFieldWidth) :
m_addressFieldWidth(addressFieldWidth),
m_str(str),
m_sourceSymbolOffset(0)
{
}
DisassemblerOutputParser::ParseResult
DisassemblerOutputParser::parseDisassembled(const QString &in)
{
// Check if there is a source file
if (in.size() < 7)
return ParseIgnore;
const bool hasSourceFile = !in.at(6).isSpace();
// Sometimes, empty lines occur
const QString simplified = in.simplified();
if (simplified.isEmpty())
return ParseIgnore;
const QStringList tokens = simplified.split(QLatin1Char(' '), QString::SkipEmptyParts);
const int tokenCount = tokens.size();
// Check for symbols as 'module!class::foo:' (start of function encountered)
// and store as state.
if (tokenCount == 1) {
QString symbol = tokens.front();
if (symbol.endsWith(QLatin1Char(':')) && symbol.contains(QLatin1Char('!'))) {
symbol.truncate(symbol.size() - 1);
m_sourceSymbol = symbol;
m_sourceSymbolOffset = 0;
}
return ParseIgnore;
}
if (tokenCount < 2)
return ParseIgnore;
if (tokenCount < 3)
return ParseFailed;
// Format line. Start with address which is important for setting the marker.
// Fix CDB word separator for location marker hex conversion to work.
const int addressTokenPos = hasSourceFile ? 2 : 0;
QString addressToken = tokens.at(addressTokenPos);
if (addressToken.size() > 9 && addressToken.at(8) == QLatin1Char('`'))
addressToken.remove(8, 1);
m_str << addressToken << ' ';
// Symbol display: Do we know a symbol? -> Display with offset.
// Else default to source file information.
if (m_sourceSymbol.isEmpty()) {
if (hasSourceFile)
m_str << tokens.at(1) << '+' << tokens.front();
} else {
m_str << '<' << m_sourceSymbol;
if (m_sourceSymbolOffset)
m_str << '+' << m_sourceSymbolOffset;
m_str << '>';
m_sourceSymbolOffset++;
}
for (int i = addressTokenPos + 1; i < tokenCount; i++)
m_str << ' ' << tokens.at(i);
m_str << '\n';
return ParseOk;
}
void DisassemblerOutputParser::parse(const QStringList &l)
{
foreach(const QString &line, l) {
switch (parseDisassembled(line)) {
case ParseOk:
case ParseIgnore:
break;
case ParseFailed:
qWarning("Failed to parse '%s'\n", qPrintable(line));
break;
}
}
}
bool dissassemble(CdbCore::CoreEngine *engine,
ULONG64 offset,
unsigned long beforeLines,
unsigned long afterLines,
QTextStream &str,
QString *errorMessage)
{
if (debugCDB)
qDebug() << Q_FUNC_INFO << offset;
QString lines;
if (!engine->dissassemble(offset, beforeLines, afterLines, &lines, errorMessage))
return false;
DisassemblerOutputParser parser(str);
parser.parse(lines.split(QLatin1Char('\n')));
return true;
}
} // namespace Internal
} // namespace Debugger
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