delorie.com/archives/browse.cgi   search  
Mail Archives: djgpp/2002/05/28/14:45:14

From: Martin Str|mberg <ams AT speedy DOT ludd DOT luth DOT se>
Subject: Re: Hooking protected mode interrupts
Newsgroups: comp.os.msdos.djgpp
References: <3CF4EF43 DOT BC5325C9 AT arcor DOT de>
User-Agent: tin/1.4.4-20000803 ("Vet for the Insane") (UNIX) (NetBSD/1.5_BETA (alpha))
Message-ID: <1022611296.485030@queeg.ludd.luth.se>
Cache-Post-Path: queeg.ludd.luth.se!unknown AT speedy DOT ludd DOT luth DOT se
X-Cache: nntpcache 2.4.0b5 (see http://www.nntpcache.org/)
Date: 28 May 2002 18:41:36 GMT
Lines: 23
NNTP-Posting-Date: 28 May 2002 18:41:36 GMT
NNTP-Posting-Host: queeg.ludd.luth.se
X-Trace: 1022611296 news.luth.se 283 130.240.16.109
To: djgpp AT delorie DOT com
DJ-Gateway: from newsgroup comp.os.msdos.djgpp
Reply-To: djgpp AT delorie DOT com

Lars Erdmann <lars DOT erdmann AT arcor DOT de> wrote:
: I have successfully hooked a protected mode interrupt.
: Now I have read in some note, that the protected mode wrapper that is
: obtained via _go32_dpmi_alloc_iret_wrapper (or so) or via
: _go32_chain_protected_mode_interrupt_vector (or so) is not locked by
: djgpp.
: Since it is essential to lock all code and data accessed during
: interrupt time, I wonder if I risk a trap in my app.

Yes.

: Has this been fixed/changed in the newest release, maybe ?

There's nothing to fix.

: If not, what is the workaround ?

To lock it (ummm, I must misunderstand you because this is obvious)!


Right,

						MartinS

- Raw text -


  webmaster     delorie software   privacy  
  Copyright © 2019   by DJ Delorie     Updated Jul 2019