Distinguish instructions which have once been valid (OBSOLETE) from
those that never saw the light of day (NEVER). Futhermore, flag
instructions which devolve to an architectural noop from those with
undefined behavior and possibly recycled opcodes.
Signed-off-by: H. Peter Anvin (Intel) <hpa@zytor.com>
Many many developers all over the net respect NASM for what it is:
a widespread (thus netwide), portable (thus netwide!), very flexible
and mature assembler tool with support for many output formats (thus netwide!!).
Now we have good news for you: NASM is licensed under the "simplified"
(2-clause) BSD license.
This means its development is open to even wider society of programmers
wishing to improve their lovely assembler.
Visit our nasm.us website for more details.
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