From:	"R. Brenner" <rene DOT brenner AT NO_SPAM_PLZbluewin DOT ch>
Newsgroups:	comp.os.msdos.djgpp
Subject:	problem with using external NASM procedures
Date:	Tue, 11 Aug 1998 00:58:49 +0200
Organization:	Swisscom AG, the blue window
Lines:	27
Message-ID:	<6qntq4$bl1$1@bw107zhb.bluewin.ch>
NNTP-Posting-Host:	zhb48pub38.bluewin.ch
To:	djgpp AT delorie DOT com
DJ-Gateway:	from newsgroup comp.os.msdos.djgpp

I'm using NASM with DJGPP together.
When I want to use an ASM routine,  I wrote, in my C program,
it works fine until I want to use it in a loop, like (for i=0; i<100; i++)
routine().
Then some really strange things happen like crashing or
rebooting my computer...what helps?

An example of an asm routine I use:
(which doesnt work in a loop)

_xcopy:
        push  ebp
        mov   ebp,esp

        mov   esi,[ebp+8]    ; param1 = source
        mov   edi,[ebp+12]    ; param2 = destination
        mov   ecx,[ebp+16]    ; param3 = length

        rep stosd

        mov   esp,ebp
        pop   ebp
        ret

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