linux-kernel - Debugging Linux OMAP kernel with kgdb and Eclipse

lists.openwall.net		lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC
Open Source and information security mailing list archives

Hash Suite: Windows password security audit tool. GUI, reports in PDF.

[<prev] [next>] [day] [month] [year] [list]

Message-id: <1A4750AE-4E56-4376-A187-0742A81AAA53@mac.com>
Date:	Thu, 07 Oct 2010 13:55:24 +0400
From:	Elvis Dowson <elvis.dowson@....com>
To:	Linux OMAP Mailing List <linux-omap@...r.kernel.org>,
	Linux Kernel Mailing List <linux-kernel@...r.kernel.org>
Subject: Debugging Linux OMAP kernel with kgdb and Eclipse

Hi,
       I'm trying to setup a kernel debugging environment for the Gumstix Overo Earth (TI OMAP 3503) + Palo43 using Eclipse. 

I have enabled kgdb in the kernel (linux-omap-2.6.32 based android kernel).

My bootargs were

# setenv console ttyS2,115200n8
# setenv mmcargs 'setenv bootargs console=${console} vram=12M omapfb.vram=0:4M omapfb.mode=dvi:${dvimode} omapdss.def_disp=${defaultdisplay} root=/dev/mmcblk0p2 rw rootfstype=ext3 rootwait init=/init kgdboc=${console} kgdbwait'

The kernel boots and waits correctly for input as follows:

console [ttyS2] enabled
kgdb: Registered I/O driver kgdboc.
kgdb: Waiting for connection from remote gdb...

I have also configure Eclipse IDE, and built the kernel, and when I run it in debug mode, it launches the kernel and the whole android OS boots correctly, and Eclipse IDE shows a number of threads running, but I can seem to see any source code highlighted, even through I set a breakpoint in board-overo.c (my board file) for the init board routine. It should have stopped and paused execution at the breakpoint. 

Question 01: When building from Eclipse IDE, it builds uImage, but for the debug settings, I selected vmlinux that was generated in the root folder. I ran uImage on the target board, but for the executable for the debug session I used vmimage. Is that correct?

When I launch Eclipse debugger, I can see a number of threads running, it doesn't display any source code, I can't pause any threads, and the breakpoints don't appear to be working. 

What should I do ?

Best regards,

Elvis Dowson
--
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to majordomo@...r.kernel.org
More majordomo info at  http://vger.kernel.org/majordomo-info.html
Please read the FAQ at  http://www.tux.org/lkml/