From: linux@arm.linux.org.uk (Russell King - ARM Linux)
To: linux-arm-kernel@lists.infradead.org
Subject: Problem with GDB when debugging IRQ handlers
Date: Tue, 28 Jun 2011 15:37:59 +0100 [thread overview]
Message-ID: <20110628143758.GF21898@n2100.arm.linux.org.uk> (raw)
In-Reply-To: <20110628143014.GD7255@1n450.cable.virginmedia.net>
On Tue, Jun 28, 2011 at 03:30:14PM +0100, Catalin Marinas wrote:
> Actually since the return address is in S_PC (which maybe gdb assumes it
> would be the saved LR), this is probably not be correct. After SVC
> entry, we have he following structure on the stack:
>
> ORIG_r0
> CPSR
> <--- assuming this is the Call Frame Address (SP+S_PC+4)
> PC <--- CFA - 4
> LR <--- don't care
> SP <--- CFA - 12
> ...
If I'm reading this correctly, it's not correct.
parent SP --> parent context stack
[possible empty word]
ORIG_r0
parent context CPSR
parent context PC
parent context LR
parent context SP
...
new SP --> R0
That empty word may or may not be present if the parent SP is aligned to
a 64-bit boundary.
next prev parent reply other threads:[~2011-06-28 14:37 UTC|newest]
Thread overview: 24+ messages / expand[flat|nested] mbox.gz Atom feed top
2011-06-27 12:53 Problem with GDB when debugging IRQ handlers Dmitry Eremin-Solenikov
2011-06-27 13:27 ` Russell King - ARM Linux
2011-06-27 14:04 ` Dmitry Eremin-Solenikov
2011-06-27 14:11 ` Hui Zhu
2011-06-27 14:58 ` Yao Qi
2011-06-28 10:39 ` Russell King - ARM Linux
2011-06-28 12:06 ` Dmitry Eremin-Solenikov
2011-06-28 12:13 ` Russell King - ARM Linux
2011-06-28 14:20 ` Catalin Marinas
2011-06-28 14:30 ` Catalin Marinas
2011-06-28 14:37 ` Russell King - ARM Linux [this message]
2011-06-28 14:42 ` Catalin Marinas
2011-06-28 14:44 ` Dmitry Eremin-Solenikov
2011-06-28 14:54 ` Dmitry Eremin-Solenikov
2011-06-28 15:06 ` Catalin Marinas
2011-06-28 15:45 ` Dmitry Eremin-Solenikov
2011-06-28 16:11 ` Catalin Marinas
2011-06-28 22:26 ` Dmitry Eremin-Solenikov
2011-06-29 9:09 ` Catalin Marinas
2011-06-29 11:20 ` Dmitry Eremin-Solenikov
2011-06-28 12:06 ` Hui Zhu
2011-06-28 12:09 ` Russell King - ARM Linux
2011-06-28 13:24 ` Catalin Marinas
2011-06-28 13:15 ` Catalin Marinas
Reply instructions:
You may reply publicly to this message via plain-text email
using any one of the following methods:
* Save the following mbox file, import it into your mail client,
and reply-to-all from there: mbox
Avoid top-posting and favor interleaved quoting:
https://en.wikipedia.org/wiki/Posting_style#Interleaved_style
* Reply using the --to, --cc, and --in-reply-to
switches of git-send-email(1):
git send-email \
--in-reply-to=20110628143758.GF21898@n2100.arm.linux.org.uk \
--to=linux@arm.linux.org.uk \
--cc=linux-arm-kernel@lists.infradead.org \
/path/to/YOUR_REPLY
https://kernel.org/pub/software/scm/git/docs/git-send-email.html
* If your mail client supports setting the In-Reply-To header
via mailto: links, try the mailto: link
Be sure your reply has a Subject: header at the top and a blank line
before the message body.
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 NNTP newsgroup(s).