Method ParseCommand

pcsx2/PINE.cpp:511–757

}

PINEServer::IPCBuffer PINEServer::ParseCommand(std::span<u8> buf, std::vector<u8>& ret_buffer, u32 buf_size)
{
	u32 ret_cnt = 5;
	u32 buf_cnt = 0;

	while (buf_cnt < buf_size)
	{
		if (!SafetyChecks(buf_cnt, 1, ret_cnt, 0, buf_size)) [[unlikely]]
			return IPCBuffer{5, MakeFailIPC(ret_buffer)};
		buf_cnt++;
		// example IPC messages: MsgRead/Write
		// refer to the client doc for more info on the format
		//         IPC Message event (1 byte)
		//         |  Memory address (4 byte)
		//         |  |           argument (VLE)
		//         |  |           |
		// format: XX YY YY YY YY ZZ ZZ ZZ ZZ
		//        reply code: 00 = OK, FF = NOT OK
		//        |  return value (VLE)
		//        |  |
		// reply: XX ZZ ZZ ZZ ZZ
		switch ((IPCCommand)buf[buf_cnt - 1])
		{
			case MsgRead8:
			{
				if (!VMManager::HasValidVM())
					goto error;
				if (!SafetyChecks(buf_cnt, 4, ret_cnt, 1, buf_size)) [[unlikely]]
					goto error;
				const u32 a = FromSpan<u32>(buf, buf_cnt);
				const u8 res = vtlb_ramRead<mem8_t>(a);
				ToResultVector(ret_buffer, res, ret_cnt);
				ret_cnt += 1;
				buf_cnt += 4;
				break;
			}
			case MsgRead16:
			{
				if (!VMManager::HasValidVM())
					goto error;
				if (!SafetyChecks(buf_cnt, 4, ret_cnt, 2, buf_size)) [[unlikely]]
					goto error;
				const u32 a = FromSpan<u32>(buf, buf_cnt);
				const u16 res = vtlb_ramRead<mem16_t>(a);
				ToResultVector(ret_buffer, res, ret_cnt);
				ret_cnt += 2;
				buf_cnt += 4;
				break;
			}
			case MsgRead32:
			{
				if (!VMManager::HasValidVM())
					goto error;
				if (!SafetyChecks(buf_cnt, 4, ret_cnt, 4, buf_size)) [[unlikely]]
					goto error;
				const u32 a = FromSpan<u32>(buf, buf_cnt);
				const u32 res = vtlb_ramRead<mem32_t>(a);
				ToResultVector(ret_buffer, res, ret_cnt);