From: Blue Swirl <blauwirbel@gmail.com>
To: Stefano Bonifazi <stefboombastic@gmail.com>
Cc: QEMU Developers <qemu-devel@nongnu.org>
Subject: Re: [Qemu-devel] Changing the content of target cpu registers
Date: Tue, 18 Jan 2011 17:17:41 +0000 [thread overview]
Message-ID: <AANLkTim9ZLDEQscwcO4hswzz4nJbP-KLnYJ_cU-MYNEw@mail.gmail.com> (raw)
In-Reply-To: <4D355D75.6070004@gmail.com>
On Tue, Jan 18, 2011 at 9:29 AM, Stefano Bonifazi
<stefboombastic@gmail.com> wrote:
> Hi all!
> I am working on qemu-user (qemu-ppc).
> I'd like to edit the values of target registers during the execution. Can I
> do that by simply changing the content of env->gpr[] or do these only
> contain a copy of the values of the registers?
> In this last case, where are the real values of the target registers stored
> so that by modifying them I can alter the behavior of the target code
> execution?
env->gpr is the canonical location, but the translator assigns TCG
variables to them (cpu_gpr[] in translate.c), so GPR contents may be
cached to these. But when helpers are called or the TB finishes,
env->gpr should be valid again.
next prev parent reply other threads:[~2011-01-18 17:18 UTC|newest]
Thread overview: 5+ messages / expand[flat|nested] mbox.gz Atom feed top
2011-01-18 9:29 [Qemu-devel] Changing the content of target cpu registers Stefano Bonifazi
2011-01-18 17:17 ` Blue Swirl [this message]
2011-01-18 18:13 ` Stefano Bonifazi
2011-01-21 22:41 ` Raphaël Lefèvre
2011-01-22 19:35 ` Blue Swirl
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=AANLkTim9ZLDEQscwcO4hswzz4nJbP-KLnYJ_cU-MYNEw@mail.gmail.com \
--to=blauwirbel@gmail.com \
--cc=qemu-devel@nongnu.org \
--cc=stefboombastic@gmail.com \
/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).