X-Authentication-Warning:	delorie.com: mailnull set sender to djgpp-bounces using -f
From:	eplmst AT lu DOT erisoft DOT se (Martin Stromberg)
Newsgroups:	comp.os.msdos.djgpp
Subject:	Re: DS and ESP
Date:	22 Feb 2002 13:46:06 GMT
Organization:	Ericsson Erisoft AB, Sweden
Lines:	32
Message-ID:	<a55i2u$s3g$1@antares.lu.erisoft.se>
References:	<a4rfgu$sbg$1 AT news DOT tpi DOT pl> <968-Mon18Feb2002212153+0200-eliz AT is DOT elta DOT co DOT il> <a55f0s$dom$1 AT news DOT tpi DOT pl>
NNTP-Posting-Host:	lws256.lu.erisoft.se
X-Newsreader:	TIN [version 1.2 PL2]
To:	djgpp AT delorie DOT com
DJ-Gateway:	from newsgroup comp.os.msdos.djgpp
Reply-To:	djgpp AT delorie DOT com

MarKol (markol4 AT wp DOT pl) wrote:
: : Użytkownik "Eli Zaretskii" <eliz AT is DOT elta DOT co DOT il> napisał w wiadomo¶ci
: : DS may become invalid if a signal happens, like if you press Ctrl-C
: : or run with timers.  The library provides a special alias selector,
: : __djgpp_ds_alias, which is always valid and spans the same memory
: : region as the selector normally loaded into DS.

: Yes, but how do I load this __djgpp_ds_alias selector when my ds
: is invalid??

You use CS which is valid:

mov	ax, cs:__djgpp_ds_alias


: But I think this will work
: and I'm able to load proper ds segment in my wrapper routine.
: I can put something like this in my wrapper:

: .
: .
: .
: mov  ax, 0
: mov  ds, ax

If this is in protected mode, you have an exception the moment you
access any data. 


Right,

						MartinS

- Raw text -