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An architectural framework for supporting heterogeneous instruction-set architectures

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2 Author(s)
Silberman, G.M. ; IBM Thomas J. Watson Res. Center, Yorktown Heights, NY, USA ; Ebcioglu, K.

An architectural framework that allows software applications and operating system code written for a given instruction set to migrate to different, higher performance architectures is described. The framework provides a hardware mechanism that enhances application performance while keeping the same program behavior from a user perspective. The framework is designed to accommodate program exceptions, self-modifying code, tracing, and debugging. Examples are given for IBM System/390 operating-system code and AIX utilities, showing the performance potential of the scheme using a very long instruction word (VLIW) machine as the high-performance target architecture.<>

Published in:

Computer  (Volume:26 ,  Issue: 6 )