We start here with an analysis of how to exploit “direct instruction flow redirection” situations (classic function pointer/saved IP redirection), focusing mostly on the x86-32 architecture. We then will discuss arbitrary writes, covering the x86-64 architecture in more detail.J ...
Redirection table and predictor for fetching instruction routines in a virtual machine guestIn one embodiment, a processor comprises a redirect unit configured to detect a match of an instruction pointer (IP) in an IP redirect table, the IP corresponding to a guest instruction that the processor ...
(=PO2), respectively. In the PH 2, the pointer PO1, which has been connected to the pointer SPO1 in the PH 1, is increased by three while the processing section 3 analyzes the instruction and the processing section 4 processes the instruction. At this point, the instruction type is ...
If that's the case it likely means that your application somehow executes garbage code, maybe due to a stack buffer overrun, maybe due to an uninitialized function pointer etc. I would exclude a compiler error (since it runs on XP) and a library problem (since the mingw version runs on ...
If any architecture-stream instruction receives an invalid operand bypass value at the REG stage, the pipeline switches to advance mode again from the rally mode (unready consumer). Alternatively, if the DEQ pointer reaches the farthest point of the preserved PEEK pointer while in the rally mode...
A redirection cannot be detected as incorrect until such time as the instruction has been completely decoded by the ID and AG stages, and has actually commenced execution in the OE stage. At this point, the pipeline control hardware traps the microcrode to a special routine which locates and...
19. A system apparatus in accordance with claim 11 wherein said scaleable and reconfiguration data memory means is further comprised of a pointer manipulation circuit for receiving run-time requests to move, overlay, rotate, enlarge, or reduce a single or plurality of stored video articles, and...
A method of executing a program in a controlled environment includes initiating execution of an operating system with which the program is adapted to execute, inserting redirection logic at the beginning of the program, and executing the program such that the redirection logic is executed. A ...