28 Sep
2004
28 Sep
'04
8:58 a.m.
ben franchuk wrote:
I have yet to see a good use for self-modifying code.
Other than
subroutines and interupts placing data into a code segement the only
self modifying code I have seen was for the 8088.
I saw it actually pretty often, in computer graphics/imaging.
A lot of times you got very fast blitter routines by writing a
small function (at runtime) which performs what you like to do,
and branch to it. Or just changing the actual pixel-op at runtime,
or design the filter the "right" way (meaning that the routine knows
already that it starts on odd byte adressess, but can transfer
longwords, deals with overlaps, etc)
cheers