Instructions like IRET, POPF and PUSHF used to not have a operand size
specifier but after applying macros they received the 'osm' one -
meaning must be the same as the BITS mode. Which is not true for these
instructions, using the operand size prefix doesn't change their
encoding and their default 64-bit encoding is the 32-bit version.
Align these with other similar instructions like RET, RETF and use the
'od#' keyword which returns their previous behavior.
Signed-off-by: Maciej Wieczor-Retman <maciej.wieczor-retman@intel.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.
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