Communications of the ACM
DIGITAL FX!32: combining emulation and binary translation
Digital Technical Journal
Dynamo: a transparent dynamic optimization system
PLDI '00 Proceedings of the ACM SIGPLAN 2000 conference on Programming language design and implementation
FX!32: A Profile-Directed Binary Translator
IEEE Micro
Proceedings of the international symposium on Code generation and optimization: feedback-directed and runtime optimization
Proceedings of the 36th annual IEEE/ACM International Symposium on Microarchitecture
LIFT: A Low-Overhead Practical Information Flow Tracking System for Detecting Security Attacks
Proceedings of the 39th Annual IEEE/ACM International Symposium on Microarchitecture
Computer Architecture, Fourth Edition: A Quantitative Approach
Computer Architecture, Fourth Edition: A Quantitative Approach
Virtual Machines: Versatile Platforms for Systems and Processes (The Morgan Kaufmann Series in Computer Architecture and Design)
QEMU, a fast and portable dynamic translator
ATEC '05 Proceedings of the annual conference on USENIX Annual Technical Conference
Valgrind: a framework for heavyweight dynamic binary instrumentation
Proceedings of the 2007 ACM SIGPLAN conference on Programming language design and implementation
PinOS: a programmable framework for whole-system dynamic instrumentation
Proceedings of the 3rd international conference on Virtual execution environments
Supporting speculative multithreading on simultaneous multithreaded processors
HiPC'06 Proceedings of the 13th international conference on High Performance Computing
Runtime adaptation: a case for reactive code alignment
Proceedings of the 2nd International Workshop on Adaptive Self-Tuning Computing Systems for the Exaflop Era
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Binary translation (BT) has been an important approach to migrate application software across instruction set architectures (ISAs). Some architectures, such as X86, allow misaligned data accesses (MDAs), while most modern architectures have the alignment restriction that requires data to be aligned in memory on natural boundaries. In a binary translation system, where the source ISA allows MDA and the target ISA does not, memory operations must be carefully translated to satisfy the alignment restriction. Naive translation will cause frequent misaligned data access traps to occur at runtime on the target machine, and severely slow down the migrated application.This paper evaluates different approaches in handling MDA in binary translation systems. It also proposes a new mechanism to deal with MDAs. Measurements based on SPEC CPU2000 and CPU2006 benchmark show that the proposed approach can significantly outperform existing methods.