An apparatus comprises processing circuitry 14 to perform data processing in response to instructions, the processing circuitry supporting speculative processing of read operations for reading data from a memory system 20, 22; and control circuitry 12, 14, 20 to identify whether a sequence of instructions to be processed by the processing circuitry includes a speculative side-channel hint instruction indicative of whether there is a risk of information leakage if at least one subsequent read operation is processed speculatively, and to determine whether to trigger a speculative side-channel mitigation measure depending on whether the instructions include the speculative side-channel hint instruction. This can help to reduce the performance impact of measures taken to protect against speculative side-channel attacks.

Embodiments of the present disclosure provide a wireless debugger and a wireless debugging system. The wireless debugger includes: a processor, a wireless communication module, and a first peripheral interface; the processor is electrically connected to the wireless communication module and the first peripheral interface, respectively; the processor, is configured to receive debugging instructions through the wireless communication module, and the debugging instructions are used to instruct debugging/stop debugging a target board; the processor, is further configured to parse the debugging instructions and convert the parsed debugging instructions so that the debugging instructions are adapted to a protocol of the first peripheral interface; and the processor, is further configured to transmit the converted debugging instructions to the to-be-debugged target board through the first peripheral interface. Debugging control is convenient and reliable.

Systems and methods for delta state tracking for event stream analysis. Events at a device are tracked and stored locally or forwarded to a server. The events collectively form an event stream. When an event of interest occurs, the precise configuration of a device at the time of the event of interest can be determined by applying the event stream in chronological or reverse chronological order to a snapshot of the device's configuration. Thus, the snapshot can be taken at any time. Tracking the deltas to the device's configuration enables the precise configuration at the time of the event of interest to be determined.

In one embodiment, an apparatus includes: a first trace source to generate a plurality of first trace messages and a first local platform description identifier to identify the first trace source; a second trace source to generate a plurality of second trace messages and a second local platform description identifier to identify the second trace source; and a trace aggregator coupled to the first and the second trace sources, the trace aggregator to generate a global platform description identifier for the apparatus and output a trace stream including the global platform destination identifier, the first and second local platform description identifiers, the plurality of first trace messages and the plurality of second trace messages. Other embodiments are described and claimed.

Disclosed in some examples are methods, systems, devices, and machine-readable mediums that use parallel hardware execution with software co-simulation to enable more advanced debugging operations on data flow architectures. Upon a halt to execution of a program thread, a state of the tiles that are executing the thread are saved and offloaded from the HTF to a host system. A developer may then examine this state on the host system to debug their program. Additionally, the state may be loaded into a software simulator that simulates the HTF hardware. This simulator allows for the developer to step through the code and to examine values to find bugs.

Systems, methods, and computer media are described for creating efficient error reproduction scenarios. Raw workload capture data can be consolidated based on transactional dependence of the requests in the capture data. The consolidated workload capture data can be stored as a separate data structure that can be accessed to identify requests on which a request of interest in the raw workload capture data is transactionally dependent. For a request of interest (e.g., a request that caused an error), a lightweight error reproduction scenario can be generated that includes the identified transactionally dependent requests and excludes unrelated requests.

A method for blocking external debugger application from analysing code of software program installed on computing device. The method including initializing software program including an application program and an internal debugger application. The software program, upon initialization thereof, instructs internal debugger application to load application program in internal debugger application. The internal debugger application is configured to utilize kernel resources of an operating system of the computing device. The method includes executing internal debugger application to set one or more break-points in code of application program to define execution path for code of application program, executing application program as per defined execution path for code thereof, stopping execution of code of application program upon reaching any of one or more break-points therein, and handing control to internal debugger application to provide an address for next instruction to be executed in defined execution path for code of application program.

A semiconductor device comprises a plurality of memory elements, test control circuitry, and a testing interface. The test control circuitry is configure to determine that one or more clock signals associated with the memory elements have been stopped and generate a scan clock signal based on the determination that the one or more clock signals have been stopped. The test control circuitry is further configured to communicate the scan clock signal to the memory elements. The testing interface is configured to communicate test data from the memory elements. In one example, the test data is delimited with start and end marker elements. The semiconductor device is mounted to a circuit board and is communicatively coupled to communication pins of the circuit board.

A device, such as a system on a chip (SoC), includes a plurality of processor cores, a broadcaster module, a plurality of decoder units, and an aggregator module. The broadcaster module broadcasts a debug request from a debugger device to one or more of the plurality of processor cores via a bus, the debug request including an address specifying a logical identifier associated with a target processor core of the plurality of processor cores. The decoder units, associated with the processor cores, forward the debug request to a debug module of the respective processor core in response to detecting a match. If no match is detected, the decoder units forward the debug request to a subsequent processor core via the bus. The aggregator module forward a response message to the debugger device, the response message originating from the target processor core.

A debugging method for a Universal Serial Bus (USB) device includes: receiving input information of a terminal through a Human Interface Device (HID) device; when report ID of the input information is a serial port ID, transmitting the input information to a buffer of a virtual serial port Teletype (TTY) device; and extracting the input information of the terminal from the buffer of the virtual serial port TTY device, executing a shell command on the input information, and returning execution result to the terminal through an original path. The method uses a USB interface to implement a HID device, thereby realizing drive-free execution. In addition, use of the endpoint of the HID device can save endpoints needed for additional debugging and driving.