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debugger: work on trk memory access

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This commit is contained in:
hjk
2009-10-02 16:56:48 +02:00
parent ebccd4c02a
commit dd09a4a16d
2 changed files with 201 additions and 26 deletions
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186
src/plugins/debugger/gdb/trkgdbadapter.cpp
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@@ -92,7 +92,7 @@ TrkGdbAdapter::TrkGdbAdapter(GdbEngine *engine, const TrkOptionsPtr &options) :
m_running(false),
m_gdbAckMode(true),
m_verbose(2),
m_bufferedMemoryRead(true),
m_bufferedMemoryRead(false),
m_waitCount(0)
{
m_gdbServer = 0;
@@ -235,11 +235,25 @@ QByteArray TrkGdbAdapter::trkReadMemoryMessage(uint addr, uint len)
return ba;
}
QByteArray TrkGdbAdapter::trkWriteMemoryMessage(uint addr, const QByteArray &data)
{
QByteArray ba;
ba.reserve(11 + data.size());
appendByte(&ba, 0x08); // Options, FIXME: why?
appendShort(&ba, data.size());
appendInt(&ba, addr);
appendInt(&ba, m_session.pid);
appendInt(&ba, m_session.tid);
ba.append(data);
return ba;
}
QByteArray TrkGdbAdapter::trkStepRangeMessage(byte option)
{
QByteArray ba;
ba.reserve(13);
ba.reserve(17);
appendByte(&ba, option);
qDebug() << "STEP ON " << hexxNumber(m_snapshot.registers[RegisterPC]);
appendInt(&ba, m_snapshot.registers[RegisterPC]); // Start address
appendInt(&ba, m_snapshot.registers[RegisterPC]); // End address
appendInt(&ba, m_session.pid);
@@ -1669,13 +1683,6 @@ void TrkGdbAdapter::write(const QByteArray &data)
{
// Write magic packets directly to TRK.
if (data.startsWith("@#")) {
QByteArray ba = QByteArray::fromHex(data.mid(2));
qDebug() << "Writing: " << quoteUnprintableLatin1(ba);
if (ba.size() >= 1)
sendTrkMessage(ba.at(0), TrkCB(handleDirectTrk), ba.mid(1));
return;
}
if (data.startsWith("@@")) {
QByteArray data1 = data.mid(2);
if (data1.endsWith(char(10)))
data1.chop(1);
@@ -1689,16 +1696,173 @@ void TrkGdbAdapter::write(const QByteArray &data)
directStep(addr);
return;
}
if (data.startsWith("@$")) {
QByteArray ba = QByteArray::fromHex(data.mid(2));
qDebug() << "Writing: " << quoteUnprintableLatin1(ba);
if (ba.size() >= 1)
sendTrkMessage(ba.at(0), TrkCB(handleDirectTrk), ba.mid(1));
return;
}
if (data.startsWith("@@")) {
// Read data
sendTrkMessage(0x10, TrkCB(handleDirectWrite1),
trkReadMemoryMessage(m_session.dataseg, 12));
return;
}
m_gdbProc.write(data, data.size());
}
uint oldPC;
QByteArray oldMem;
uint scratch;
void TrkGdbAdapter::handleDirectWrite1(const TrkResult &response)
{
scratch = m_session.dataseg + 512;
logMessage("DIRECT WRITE1: " + response.toString());
if (const int errorCode = response.errorCode()) {
logMessage("ERROR: " + response.errorString() + "in handleDirectWrite1");
} else {
oldMem = response.data.mid(3);
oldPC = m_snapshot.registers[RegisterPC];
logMessage("READ MEM: " + oldMem.toHex());
//qDebug("READ MEM: " + oldMem.toHex());
QByteArray ba;
appendByte(&ba, 0xaa);
appendByte(&ba, 0xaa);
appendByte(&ba, 0xaa);
appendByte(&ba, 0xaa);
#if 0
// Arm:
// 0: e51f4004 ldr r4, [pc, #-4] ; 4 <.text+0x4>
appendByte(&ba, 0x04);
appendByte(&ba, 0x50); // R5
appendByte(&ba, 0x1f);
appendByte(&ba, 0xe5);
#else
// Thumb:
// subs r0, #16
appendByte(&ba, 0x08);
appendByte(&ba, 0x3b);
// subs r0, #16
appendByte(&ba, 0x08);
appendByte(&ba, 0x3b);
//
appendByte(&ba, 0x08);
appendByte(&ba, 0x3b);
// subs r0, #16
appendByte(&ba, 0x08);
appendByte(&ba, 0x3b);
#endif
// Write data
sendTrkMessage(0x11, TrkCB(handleDirectWrite2),
trkWriteMemoryMessage(scratch, ba));
}
}
void TrkGdbAdapter::handleDirectWrite2(const TrkResult &response)
{
logMessage("DIRECT WRITE2: " + response.toString());
if (const int errorCode = response.errorCode()) {
logMessage("ERROR: " + response.errorString() + "in handleDirectWrite1");
} else {
// Check
sendTrkMessage(0x10, TrkCB(handleDirectWrite3),
trkReadMemoryMessage(scratch, 12));
}
}
void TrkGdbAdapter::handleDirectWrite3(const TrkResult &response)
{
logMessage("DIRECT WRITE3: " + response.toString());
if (const int errorCode = response.errorCode()) {
logMessage("ERROR: " + response.errorString() + "in handleDirectWrite1");
} else {
// Set PC
sendTrkMessage(0x13, TrkCB(handleDirectWrite4),
trkWriteRegisterMessage(RegisterPC, scratch + 4));
}
}
void TrkGdbAdapter::handleDirectWrite4(const TrkResult &response)
{
m_snapshot.registers[RegisterPC] = scratch + 4;
return;
logMessage("DIRECT WRITE4: " + response.toString());
if (const int errorCode = response.errorCode()) {
logMessage("ERROR: " + response.errorString() + "in handleDirectWrite1");
} else {
QByteArray ba1;
appendByte(&ba1, 0x11); // options "step over"
appendInt(&ba1, scratch + 4);
appendInt(&ba1, scratch + 4);
appendInt(&ba1, m_session.pid);
appendInt(&ba1, m_session.tid);
sendTrkMessage(0x19, TrkCB(handleDirectWrite5), ba1);
}
}
void TrkGdbAdapter::handleDirectWrite5(const TrkResult &response)
{
logMessage("DIRECT WRITE5: " + response.toString());
if (const int errorCode = response.errorCode()) {
logMessage("ERROR: " + response.errorString() + "in handleDirectWrite1");
} else {
// Restore PC
sendTrkMessage(0x13, TrkCB(handleDirectWrite6),
trkWriteRegisterMessage(RegisterPC, oldPC));
}
}
void TrkGdbAdapter::handleDirectWrite6(const TrkResult &response)
{
logMessage("DIRECT WRITE6: " + response.toString());
if (const int errorCode = response.errorCode()) {
logMessage("ERROR: " + response.errorString() + "in handleDirectWrite1");
} else {
// Restore memory
sendTrkMessage(0x11, TrkCB(handleDirectWrite7),
trkWriteMemoryMessage(scratch, oldMem));
}
}
void TrkGdbAdapter::handleDirectWrite7(const TrkResult &response)
{
logMessage("DIRECT WRITE7: " + response.toString());
if (const int errorCode = response.errorCode()) {
logMessage("ERROR: " + response.errorString() + "in handleDirectWrite1");
} else {
// Check
sendTrkMessage(0x10, TrkCB(handleDirectWrite8),
trkReadMemoryMessage(scratch, 8));
}
}
void TrkGdbAdapter::handleDirectWrite8(const TrkResult &response)
{
logMessage("DIRECT WRITE8: " + response.toString());
if (const int errorCode = response.errorCode()) {
logMessage("ERROR: " + response.errorString() + "in handleDirectWrite1");
} else {
// Re-read registers
sendTrkMessage(0x12,
TrkCB(handleAndReportReadRegistersAfterStop),
trkReadRegistersMessage());
}
}
void TrkGdbAdapter::handleDirectWrite9(const TrkResult &response)
{
logMessage("DIRECT WRITE9: " + response.toString());
}
void TrkGdbAdapter::handleDirectTrk(const TrkResult &result)
{
logMessage("HANDLE DIRECT TRK: " + stringFromArray(result.data));
}
uint oldPC;
void TrkGdbAdapter::directStep(uint addr)
{
// Write PC: