* i8086 debugging issues.
@ 2005-09-22 4:10 Scott Robinson
0 siblings, 0 replies; only message in thread
From: Scott Robinson @ 2005-09-22 4:10 UTC (permalink / raw)
To: gdb
[-- Attachment #1: Type: text/plain, Size: 602 bytes --]
I am attempting to debug i8086 (16-bit) code with gdb, but am running
into a problem. This problem occurs with the gdb remotes in both bochs
and qemu.
My issue is the program counter. Specifically, $pc is mapped to $eip -
which isn't strictly valid in 16-bit mode. To obtain information about
the actual current $pc, I need to perform the calculation manually.
(($cs << 4) + $eip)
Manually setting $pc causes the system to panic, obviously. :-(
In short, is there a way to make gdb cognizent of the segment registers?
Scott.
--
http://quadhome.com/ - Personal webpage
[-- Attachment #2: Digital signature --]
[-- Type: application/pgp-signature, Size: 197 bytes --]
^ permalink raw reply [flat|nested] only message in thread
only message in thread, other threads:[~2005-09-22 4:10 UTC | newest]
Thread overview: (only message) (download: mbox.gz / follow: Atom feed)
-- links below jump to the message on this page --
2005-09-22 4:10 i8086 debugging issues Scott Robinson
This is a public inbox, see mirroring instructions
for how to clone and mirror all data and code used for this inbox;
as well as URLs for read-only IMAP folder(s) and NNTP newsgroup(s).