From:	yorka AT dlc DOT fi (Atte Koivula)
Newsgroups:	comp.os.msdos.djgpp
Subject:	Re: Inline ASM: movsx?
Date:	Thu, 28 May 1998 21:23:36 GMT
Organization:	Majik
Lines:	32
Message-ID:	<356ed3e8.28967556@news.dlc.fi>
References:	<aTLa1.196$iY6 DOT 841039 AT news DOT itd DOT umich DOT edu>
NNTP-Posting-Host:	kou83.pp.dlc.fi
Mime-Version:	1.0
To:	djgpp AT delorie DOT com
DJ-Gateway:	from newsgroup comp.os.msdos.djgpp

GNU assembler doesn't recognize the instructions "movzx" or "movsx".
Instead, the equivalent for "movzx" for example is "movzXY", where "X"
is the size of the from-operation and "Y" for the
destination-operation, for example movzwl (w == word, l == dword/long,
ie. from word to long). I would give you the exact rules about using
all "mov with X extention" -opcodes under GAS, but I seem to have
forgotten most of them as I've not-so-recently moved from inline asm
to NASM. Anyway, I hope this was of help.

- Atte "Yorka" Koivula   

On Wed, 27 May 1998 03:36:38 GMT, krian AT umich DOT edu (Krian U) wrote:

>Hi,
>
>I've recently started using inline assembly in DJGPP (GCC 2.8.1), and I ran 
>into this problem. 
>Instructions like movsx and movcx give an "unrecognized 386 instruction" 
>error. Is there a way I can use inline assembly with the 486 or later 
>instruction set? I can't seem to find much info on GCC inline asm in the FAQ 
>or around the web.
>
>Another quick question:
>I believe this may have been asked many times before, but I was wondering if 
>there is a way to access local variables in inline asm, without having to pass 
>them in as arguments, or fiddling around with the bp.
>
>Any help would be much appreciated,
>
>-Krian

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