.intel_syntax

.intel_syntax

[n mishra]

Hi all,
Could someone please tell me how the .intel_syntax works.I can't 
seem to find any reference to it in the man pages or any other 
documentation on it.I want to compile some code written in the 
intel syntax using gcc.
Thanks.
mishra.

Re: .intel_syntax

[hp]

AS (dvi, html or ps variant, 'info' is un-readable, 'man' doesn't even exist) 
documentation mentions only the difference wrt att syntax and some specific 
issues, basic coding should refer to intel docs.

find an excerpt at
	http://www.lxhp.in-berlin.de/lhpas86.html

basic rules, very short:
  <source> and <destn> appear exchanged (mostly! fp oprs are different!)
  mnonic+"l" for <dword> opr,  "w" for word, "b" for byte
  the operand never takes a size praefix.
  use "(...)" instead of " [ .. ]" or intel syntax "ptr" or "pointer".
  immediate oprs praefixed w. "$"
  indexed addressing by " disp(reg)" 
  or " disp( base-reg, scaled-reg, scale-factor)"
	where any of the rsp. items migh be left blank, e.g.
		movl $1, (,edx,2)
	which for nasm would be "mov dword[edx*2],1"

AS alway 'optimzes' branches and byte-codeable immeds, uncontrolably, 
but, any branches to labels which are declared "global" will be assembled  
'long' regardless of the displacement figure - "nasm "jmp/jcc near label".

other differences exist wrt pseudo operations, which are fully explaind in AS 
documentation.

insert ".att_syntax noprefix" at top asm line for un-prefixed registers which 
would otherwise be expected w. a leading "%" character.
AS's ".intel_syntax" not orderly implemented, imo, not recommendable.


best,
	hp

n  mishra am Donnerstag, 16. Januar 2003 01:19:
> Hi all,
> Could someone please tell me how the .intel_syntax works.I can't
> seem to find any reference to it in the man pages or any other
> documentation on it.I want to compile some code written in the
> intel syntax using gcc.

-- 
Linux,Assembly,Forth: http://www.lxhp.in-berlin.de/index-lx.shtml en/de
  >> clf -at- lxhp -dot- in-berlin -dot- de <<

Re: .intel_syntax

[hp]

hp am Donnerstag, 16. Januar 2003 06:30:

I forgot (didn't read carefully)

intel_syntax is not documented, at all. but, you'll find several examples to 
almost all mnemonics in the <binutils> sources - which also reveal the 
current state of in-completeness. 


-- 
Linux,Assembly,Forth: http://www.lxhp.in-berlin.de/index-lx.shtml en/de
  >> hp -at- lxhp -dot- in-berlin -dot- de <<

Re: .intel_syntax

[etienne]

n mishra wrote:

> Hi all,
> Could someone please tell me how the .intel_syntax works.I can't seem 
> to find any reference to it in the man pages or any other 
> documentation on it.I want to compile some code written in the intel 
> syntax using gcc. 

you cant (unless I am wrong)

gcc does at&t syntax only .......... and uses gas to compile assembly

but you can use nasm to compile intel syntax ..... and link nasm object 
files to gcc compiled C or C++

there is heaps of intel syntax docs on Intel's site

etienne

>
> Thanks.
> mishra.
>
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