Xref: news2.mv.net comp.os.msdos.djgpp:5477
From: Geert Goossens <gagoosse AT info DOT vub DOT ac DOT be>
Newsgroups: comp.os.msdos.djgpp
Subject: GDB remote serial debugging
Date: Thu, 27 Jun 1996 15:23:15 +0200
Organization: Brussels Free Universities VUB/ULB
Lines: 33
Message-ID: <31D28B43.38C0@info.vub.ac.be>
NNTP-Posting-Host: info4.vub.ac.be
Mime-Version: 1.0
Content-Type: text/plain; charset=us-ascii
Content-Transfer-Encoding: 7bit
To: djgpp AT delorie DOT com
DJ-Gateway: from newsgroup comp.os.msdos.djgpp

Hi,

I'm trying to setup gdb for remote debugging. I've found the TSR program
asynctsr.com in the archive aeasy102.zip. This archive also contains a
test program gtest, that sets up a tty session with a remote host and
works just fine.
But when I recompile gtest, it crashes when I run it with the error:
Segmentation violation in pointer 0x00000018

This happens when it tries to read the address at interrupt 12 (where
the TSR program is installed). It reads the address as:
	*((unsigned short*)(0xE0000000 + 12*4))
This produces a general protection error. As said, the compiled program
I found in the archive works perfectly. It's just the program that I
compile with gcc v. 2.7.2 that produces this problem. Since I have to
recompile gdb to set it up for remote debugging, gdb suffers from the
same problem.
Has anybody had this problem before and does anonyone know what causes
it?


-- 
+------------------------------------------+
| Geert Goossens   (geert AT info DOT vub DOT ac DOT be)  |
| Digital Telecom Department INFO/TW       |
| Vrije Universiteit Brussel               |
| Pleinlaan 2                              |
| 1050 Brussel                             |
| Belgium                                  |
|                                          |
| tel.: +32-2-629.29.77                    |
| fax.: +32-2-629.28.70                    |
+------------------------------------------+