Date: Mon, 21 Apr 1997 12:06:15 +0000 From: Michael Flegel To: Leath Muller Cc: Liam , djgpp AT delorie DOT com Subject: Re: spawning NASM from GCC? In-Reply-To: <199704202328.JAA03863@solwarra.gbrmpa.gov.au> Message-Id: Mime-Version: 1.0 Content-Type: TEXT/PLAIN; charset=US-ASCII Precedence: bulk On Mon, 21 Apr 1997, Leath Muller wrote: > > > Because, frankly AT&T syntax is giving me the shits. I always > > > thought that anything non-intel was better, but I don't think it's > > > the case here. (Who ever heard of differentiating between movl, > > > movw and movb, when it's obvious from the kinds of operands > > > you use...) > > Just on this, whats the problem? If you know what your doing, you > should be able to automatically insert the correct character... > > > I don't like the PC AT&T syntax either, its too much of a > > cross between Intel and the one I describe below. > > The Amiga uses what is more like AT&T than Intel but > > A LOT easier than that on the IBM PC. > > I programmed the 680x0 range extensively, and found it extremely > easy to move from the ol' defunct Amiga to AT&T on the PC... > AT&T is _MUCH_ more closely related to Motorola syntax than > Intel... So I heard, but I never did program the Motorola > > The architectures are completely different, so you have to expect > completely different instructions, registers etc. Having segmented > registers has its advantages on the PC - fixed point math can be so > much easier on a PC simply because of this... > > > which would move the word in register d0 into d1. > > This all makes life easier when referring to memory > > locations and constants, you don't have to use > > 'WORD PTR'. > > You don't have to use WORD PTR _AT_ALL_ under DJGPP. Forget about > it. AT&T on the PC is extremely similar to Motorola syntax. > > Motorola: > mov.l (a0), d0 > AT&T: > movl (%esi), %eax > > Porting of code between the two is extremely easy, with the only > problems occuring when you have used a lot of 680x0 registers. I > would say you don't understand AT&T very well, or haven't bothered > to learn it... I understand it alright: I'm just used to intel, and AT&T is intel backwards: dest is the second operand and src is first. You have to use % every time, and have to classify a mov with l,w,b because the assembler can't figure it out for himself. ~~:-) MLF/SLi ;----------------------------------------------------------------------------; ; Michael Lamar Flegel ; Student of Math and Physics in Hamburg, Germany ; ; Am Ehrenmal 2 ;---------------------------------------------------; ; 21516 Schulendorf ; www.physnet.uni-hamburg.de/home/vms/flegel ; ; Germany ; flegel AT physnet DOT uni-hamburg DOT de ; ;----------------------------------------------------------------------------;