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// Copyright (C) 2016 The Qt Company Ltd.
// SPDX-License-Identifier: LicenseRef-Qt-Commercial OR GPL-3.0-only WITH Qt-GPL-exception-1.0
#include "disassemblerlines.h"
#include <QDebug>
#include <QFile>
#include <QTextStream>
namespace Debugger::Internal {
void DisassemblerLine::fromString(const QString &unparsed)
{
int pos = -1;
for (int i = 0; i != unparsed.size(); ++i) {
const uint c = unparsed.at(i).unicode();
if (c == ' ' || c == ':' || c == '\t') {
pos = i;
break;
}
}
// Mac gdb has an overflow reporting 64bit addresses causing the instruction
// to follow the last digit "0x000000013fff4810mov 1,1". Truncate here.
if (pos > 19 && unparsed.mid(3, 16).toULongLong())
pos = 19;
QString addr = unparsed.left(pos);
// MSVC 64bit: Remove 64bit separator 00000000`00a45000'.
if (addr.size() >= 9 && addr.at(8) == '`')
addr.remove(8, 1);
if (addr.endsWith(':')) // clang
addr.chop(1);
if (addr.startsWith("0x"))
addr.remove(0, 2);
bool ok = false;
address = addr.toULongLong(&ok, 16);
if (ok)
data = unparsed.mid(pos + 1);
else
data = unparsed;
}
quint64 DisassemblerLines::startAddress() const
{
for (int i = 0; i < m_data.size(); ++i)
if (m_data.at(i).address)
return m_data.at(i).address;
return 0;
}
quint64 DisassemblerLines::endAddress() const
{
for (int i = m_data.size()- 1; i >= 0; --i)
if (m_data.at(i).address)
return m_data.at(i).address;
return 0;
}
int DisassemblerLines::lineForAddress(quint64 address) const
{
return m_rowCache.value(address);
}
bool DisassemblerLines::coversAddress(quint64 address) const
{
return m_rowCache.value(address) != 0;
}
void DisassemblerLines::appendLine(const DisassemblerLine &dl)
{
m_data.append(dl);
m_rowCache[dl.address] = m_data.size();
}
// Append source line: Cache current file.
struct SourceFileCache
{
QString fileName;
QStringList lines;
};
Q_GLOBAL_STATIC(SourceFileCache, sourceFileCache)
void DisassemblerLines::appendSourceLine(const QString &fileName, int lineNumber)
{
if (fileName.isEmpty() || lineNumber == 0)
return;
lineNumber--; // Fix 1..n range.
SourceFileCache *cache = sourceFileCache();
if (fileName != cache->fileName) {
cache->fileName = fileName;
cache->lines.clear();
QFile file(fileName);
if (file.open(QIODevice::ReadOnly)) {
QTextStream ts(&file);
cache->lines = ts.readAll().split('\n');
}
}
if (lineNumber >= cache->lines.size())
return;
DisassemblerLine dl;
dl.lineNumber = lineNumber;
dl.data = cache->lines.at(lineNumber);
appendLine(dl);
}
void DisassemblerLines::appendComment(const QString &line)
{
DisassemblerLine dl;
dl.data = line;
appendLine(dl);
}
void DisassemblerLines::appendUnparsed(const QString &unparsed)
{
QString line = unparsed.trimmed();
if (line.isEmpty())
return;
if (line.startsWith("Current language:"))
return;
if (line.startsWith("Dump of assembler")) {
m_lastFunction.clear();
return;
}
if (line.startsWith("The current source"))
return;
if (line.startsWith("End of assembler")) {
m_lastFunction.clear();
return;
}
if (line.startsWith("=> "))
line = line.mid(3);
if (line.startsWith("0x")) {
// Address line. Split at the tab.
int tab1 = line.indexOf('\t');
if (tab1 == -1) {
appendComment(line);
return;
}
int tab2 = line.indexOf('\t', tab1 + 1);
if (tab2 == -1)
tab2 = tab1;
QString address = line.left(tab1);
if (address.endsWith(':'))
address.chop(1);
int pos1 = address.indexOf('<') + 1;
DisassemblerLine dl;
dl.bytes = line.mid(tab1, tab2 - tab1).trimmed();
m_bytesLength = qMax(m_bytesLength, tab2 - tab1);
dl.data = line.mid(tab2).trimmed();
if (pos1 && address.indexOf("<UNDEFINED> instruction:") == -1) {
if (address.endsWith('>'))
address.chop(1);
int pos2 = address.indexOf('+', pos1);
if (pos1 < pos2) {
QString function = address.mid(pos1, pos2 - pos1);
if (function != m_lastFunction) {
DisassemblerLine dl;
dl.data = "Function: " + function;
m_data.append(dl);
m_lastFunction = function;
}
}
dl.address = address.left(pos1 - 1).toULongLong(nullptr, 0);
dl.function = m_lastFunction;
dl.offset = address.mid(pos2).toUInt();
} else {
// Plain data like "0x0000cd64:\tadd\tlr, pc, lr\n"
dl.address = address.toULongLong(nullptr, 0);
dl.function = m_lastFunction;
dl.offset = 0;
}
m_rowCache[dl.address] = m_data.size() + 1;
m_data.append(dl);
} else {
// Comment or code line.
QTextStream ts(&line);
DisassemblerLine dl;
ts >> dl.lineNumber;
dl.data = line.mid(ts.pos());
m_data.append(dl);
}
}
QString DisassemblerLine::toString(int maxOp) const
{
const QString someSpace = " ";
QString str;
if (isAssembler()) {
if (address)
str += QString("0x%1 ").arg(address, 0, 16);
if (offset)
str += QString("<+%1> ").arg(offset, 5);
else
str += " ";
str += QString(" %1 ").arg(bytes);
str += QString(maxOp - bytes.size(), ' ');
str += data;
} else if (isCode()) {
str += someSpace;
str += QString::number(lineNumber);
if (hunk)
str += QString(" [%1]").arg(hunk);
else
str += " ";
str += data;
} else {
str += someSpace;
str += data;
}
return str;
}
QString DisassemblerLines::toString() const
{
QString str;
for (int i = 0, n = size(); i != n; ++i) {
str += m_data.at(i).toString(m_bytesLength);
str += '\n';
}
return str;
}
} // Debugger::Internal
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