Hi guys, we recently had an issue with running a program using FPU instructions to obtain the current EIP (basically a weird way of "call 0; pop eax") that was not working on QEMU (with TCG).
Looking at the problem, we found this patch to be useful/fixing the issue: https://launchpadlibrarian.net/140457932/patch-qemu-1.5.0-fpip.diff Looking through the DEVEL archives, I found this patch http://lists.nongnu.org/archive/html/qemu-devel/2011-06/msg01206.html that adds the FPU flags to the environment, but is only using them for KVM. I was wondering - since the above patch is rather old, you have probably come across it before - if there was a reason for not including it in QEMU (I checked in git:master and it's not applied). If there isn't, maybe it'd be worth re-considering :) thanks! -Clemens -- Clemens Kolbitsch Security Researcher kolbit...@lastline.com Lastline, Inc. 6950 Hollister Avenue, Suite 101 Goleta, CA 93117 www.lastline.com
