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A perf ABI fixA perf ABI fixPosted Sep 26, 2013 20:13 UTC (Thu) by ncm (subscriber, #165)In reply to: A perf ABI fix by etienne Parent article: A perf ABI fix What mpr said. Further, any use of bitfields to control hardware makes the driver non-portable to any other architecture. Further further, there is no way to know, ABI notwithstanding, how any particular compiler version will implement a series of bitfield operations, so use of bitfields makes your driver code non-portable even to the next release of the same compiler. Categorically, there is never any excuse to use bitfields to operate hardware registers. Use of bitfields in a driver is a marker of crippling incompetence. Publishing code written that way will blight your career more reliably than publishing designs for amateur road mines.
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