// Get reference to FileOutputStream constructor - two versions may apply
// Older (pre JDK1.4) version accepts (String name) parameters only
// Later version also accepts (String name, boolean append) parameter pattern
// If append mode function is found, set flag to indicate call parameter to be added
static jmethodID getStreamConstructor(JNIEnv *env, jclass& fileOutputStreamClass, bool overwriteModeOnly, bool& useAppendParam)
{
jmethodID fileOutputStreamConstructor = NULL;
useAppendParam = false;
if (!overwriteModeOnly)
{
fileOutputStreamConstructor = env->GetMethodID(fileOutputStreamClass, "<init>", "(Ljava/lang/String;Z)V");
// if this form of constructor not found (pre 1.4 JVM) then use simpler (String name) form instead
if (exceptionRaised(env) || (fileOutputStreamConstructor == NULL))
{
useAppendParam = false; // wanted later version, but not available in this JVM
}
else // found later constructor to use for appending to output file
{
useAppendParam = true;
}
}
// if not using later form of constructor, look for simpler (String name) form instead, no append
if (overwriteModeOnly || !useAppendParam)
{
fileOutputStreamConstructor = env->GetMethodID(fileOutputStreamClass, "<init>", "(Ljava/lang/String;)V");
}
return fileOutputStreamConstructor;
}
/**
* Processes a stop-reply message.
*
* @param msg The message to process.
*
* @return A NaviError code that describes whether the operation was successful
* or not.
*/
NaviError GdbSystem::processMessage(const std::string& msg) {
if (cpu->isBreakpointMessage(msg)) {
bool isRegular = cpu->hasRegularBreakpointMessage();
unsigned int signal =
isRegular ?
zylib::zycon::parseHexString<unsigned int>(msg.substr(2, 2)) : 0;
msglog->log(LOG_VERBOSE, "Received stop message %s", msg.c_str());
if (!isRegular || signal == 5) {
return processBreakpointMessage(msg);
} else if (signal == SIGSEGV) {
// SEGFAULT
msglog->log(LOG_ALWAYS, "Target process segfaulted");
cpu->sendAck();
CPUADDRESS address = 0;
NaviError eipResult = getInstructionPointer(
threadFromBreakpointMessage(msg), address);
if (eipResult) {
msglog->log(LOG_VERBOSE, "Error: Couldn't read the value of the "
"instruction pointer (Code %d)",
eipResult);
return eipResult;
}
exceptionRaised(threadFromBreakpointMessage(msg), address, signal);
return NaviErrors::SUCCESS;
} else {
msglog->log(LOG_ALWAYS, "Received unknown stop message %s", msg.c_str());
cpu->sendAck();
resume(threadFromBreakpointMessage(msg));
return NaviErrors::SUCCESS;
}
} else if (cpu->isProcessExitMessage(msg)
|| cpu->isProcessTerminateMessage(msg)) {
cpu->sendAck();
// Tell the base system that the process exited
processExit();
} else {
msglog->log(LOG_ALWAYS, "Error: Received unknown message %s", msg.c_str());
}
return NaviErrors::SUCCESS;
}