Architecture support for single address space operating systems
ASPLOS V Proceedings of the fifth international conference on Architectural support for programming languages and operating systems
Efficient software-based fault isolation
SOSP '93 Proceedings of the fourteenth ACM symposium on Operating systems principles
Microc/OS-II
Proceedings of the 10th international conference on Architectural support for programming languages and operating systems
Simple Memory Protection for Embedded Operating System Kernels
Proceedings of the FREENIX Track: 2002 USENIX Annual Technical Conference
On memory protection in real-time OS for small embedded systems
RTCSA '97 Proceedings of the 4th International Workshop on Real-Time Computing Systems and Applications
CCured: type-safe retrofitting of legacy software
ACM Transactions on Programming Languages and Systems (TOPLAS)
Segment protection for embedded systems using run-time checks
Proceedings of the 2005 international conference on Compilers, architectures and synthesis for embedded systems
Architectural support for safe software execution on embedded processors
CODES+ISSS '06 Proceedings of the 4th international conference on Hardware/software codesign and system synthesis
A system for coarse grained memory protection in tiny embedded processors
Proceedings of the 44th annual Design Automation Conference
A Run-Time Memory Protection Methodology
ASP-DAC '07 Proceedings of the 2007 Asia and South Pacific Design Automation Conference
CITWORKSHOPS '08 Proceedings of the 2008 IEEE 8th International Conference on Computer and Information Technology Workshops
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To deploy a memory protection mechanism, it requires CPU support hardware components like Memory Management Unit (MMU) or Memory Protection Unit (MPU). However, in embedded system, most of microcontrollers lack to be equipped these features because they cause the system incurred hardware cost and performance penalty. In this paper, a method to detect memory corruption at run-time without incurring hardware cost is proposed. Embedded system processor does not require having MMU or MPU. Off-chip detection based on FPGA by hooking on memory bus to monitor memory access for multitasking Realtime Operating System (RTOS) application is explored. Our solution, called MemMON, by combining hardware/software can detect memory access error such as task's stack overflow, task's reading/writing to code/data segments of the other tasks or memory access violation to OS kernel efficiently. In experimental evaluation, a comparison of realtime schedulability is carried out for both using and not using MemMON. Using our MemMON causes realtime schedulability of the system dropped-off about 3 times.