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Date: Sun, 19 Mar 2000 15:26:11 +0000
From: Ben Smithurst <ben@scientia.demon.co.uk>
To: matteotti <carloma@bluewin.ch>
Cc: freebsd-questions@FreeBSD.ORG
Subject: Re: NASM
Message-ID: <20000319152611.K14381@strontium.scientia.demon.co.uk>
References: <38D4CDEA.D8218E53@bluewin.ch>
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matteotti wrote:

> _start:
>  mov eax,4
>  mov ebx,1
>  mov ecx,msg
>  mov edx,11
>  int 0x80
>  mov ebx,0
>  mov eax,1
>  int 0x80
> 
> section .data
> msg db 'Hallo Welt',0x0A
> 
> I compile it with : nasm -f elf hello.asm
> I link it with : ld -o hello hello.o
> 
> I get an executable 'hello'. Running it gives no output whatsoever !
> My OS is  FreeBSD3.2. NASM version 0.98
> 
> The same procedure as above works perfectly under Linux.

A similar question came up on the -hackers list a while back. I think
the answer was that FreeBSD and Linux handle syscalls differently in
asm.  Search the -hackers list archive for more details, since I know
next to nothing about asm.

-- 
Ben Smithurst / ben@scientia.demon.co.uk / PGP: 0x99392F7D


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