Date: Tue, 14 Nov 1995 19:33:27 +0200 (IST)
From: Eli Zaretskii <eliz AT is DOT elta DOT co DOT il>
To: David Friedman <dfriedmn AT wam DOT umd DOT edu>
Cc: DJGPP Mailing List <djgpp AT sun DOT soe DOT clarkson DOT edu>
Subject: Re: GAS (i86) assembling incorectly


On Tue, 14 Nov 1995, David Friedman wrote:

>   It seems that if you don't specify a opcode suffix, GAS will assemble some 
> instructions with the wrong opperand size and not produce any warnings or 
> error messages! It gleefully assembled "out %al, %dx" into *outw %ax, 
> %dx*.  I suppose it looked at the DX register, ignored the AL regsiter and 
> decided to use the 16-bit form.
>   Is there anyone I can notify to get this fixed?
> 
> David Friedman
>   who just spent 3 days
>   debugging before he
>   solved the above problem

This is a well-known problem.  So well-known, in fact, that it is 
mentioned in the DJGPP FAQ list (available as faq102.zip from the same 
place you get DJGPP), section 17.1.  And in this case, it probably would 
have saved you those 3 days of debugging.

Please, *please*, PLEASE, read the FAQ!!