assembly - Why REP can be added to any String Data Transfer except LOADS? -


rep stosb (stosw or stosd ) rep movsb rep insb rep outsb 

those string data transfer allowed rep lodsb not ?

the rep lodsb, rep lodsw, rep lodsd , rep lodsq instructions valid. there's never use them though, can't data you've loaded.

the case can think of might useful areas of memory mapped io read side-effects (which extremely rare).


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