assembler syntax: low(sym) vs. sym@l

Hans-Peter Nilsson hans-peter.nilsson@axis.com
Fri Jan 26 07:30:00 GMT 2001


> Date: Thu, 25 Jan 2001 22:28:00 -0700
> From: Greg McGary <greg@mcgary.org>
> 
> PPC provides this syntax for specifying 16-bit pieces of a word:
> sym@h, sym@ha, sym@l.  m32r, OTOH, uses this syntax: high(sym),
> shigh(sym), low(sym).
> 
> I need to choose a syntax for a new gas port.  Is there a substantial
> reason (i.e., other than aesthetics) for choosing one over the other?
> I'll likely go with @xx suffixes if there's no good reason to prefer
> the other notation.

Just as an alternative :-) you could also catch the right piece
with "(symexpr >> N) & 65535", N = 0, 16, 32, 48.  That means
you need to do a bit more hacking to inspect the operand
expression, though.

brgds, H-P


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