similar to: adding prefixes to certain instructions x86 -- where to start?

Displaying 20 results from an estimated 3000 matches similar to: "adding prefixes to certain instructions x86 -- where to start?"

2015 Sep 11
2
adding prefixes to certain instructions x86 -- where to start?
I'm trying to make a security sandbox. For example, lets say my program has a LoadInst in the LLVM IR and I know I want to confine the address range this LoadInst is accessing. Maybe that LoadInst gets emitted as a MOV machine code instruction by the backend. During execution an attacker could potentially control the operands of the MOV instruction through some exploit, but usually he
2013 Mar 12
0
[LLVMdev] LNT BenchmarkGame
----- Original Message ----- > From: "Daniel Dunbar" <daniel at zuster.org> > To: "Renato Golin" <renato.golin at linaro.org> > Cc: "Hal Finkel" <hfinkel at anl.gov>, "Marshall Clow" <mclow.lists at gmail.com>, "LLVM Dev" <llvmdev at cs.uiuc.edu> > Sent: Tuesday, March 12, 2013 12:30:12 PM > Subject: Re:
2013 Mar 12
5
[LLVMdev] LNT BenchmarkGame
On Tue, Mar 12, 2013 at 10:23 AM, Renato Golin <renato.golin at linaro.org>wrote: > On 12 March 2013 16:48, Daniel Dunbar <daniel at zuster.org> wrote: > >> The former mode is historically what the test suite did, the latter mode >> is substantially faster (and independent of bugs in the native CC). >> > > Yes, I agree this is better for many cases, but
2016 May 10
2
Trying to build bootable iso but very confused by syslinux documentation
On 05/03/2016 02:31 AM, Thomas Schmitt via Syslinux wrote: > Hi, > > John Lewis wrote: >> https://help.ubuntu.com/community/LiveCDCustomizationFromScratch >> >> The show stopper for me was the mkisofs because the closest command I >> had available was xorrisofs and I think a switch was different. > If you have questions about xorrisofs, then just ask me. :))
2014 Jan 22
3
wiki account request
Hi, me: > > Please enable editing. Gene Cumm: > Done. Thanks. I have now edited http://www.syslinux.org/wiki/index.php/Hardware_Compatibility#USB-Miscellaneous ------------------------------------------------------------ Next i'll try to develop a user oriented hint for SYSLINUX#Creating_a_Bootable_Disk which takes into respect the opinions of Ady, Mattias, me, and of any
2007 Apr 25
2
Re: compiz: Changes to 'master'
On Wed, 2007-04-25 at 11:09 -0700, Robert Carr wrote: > include/compiz.h | 1 + > 1 files changed, 1 insertion(+) > > New commits: > commit 2402215a6a3bd50e9d87e99d4a45de14b635ecea > Merge: 1b0ae38... 7f518da... > Author: Robert Carr <racarr@gorbie.(none)> > Date: Wed Apr 25 14:09:38 2007 -0400 > > Merge branch 'master' of
2007 May 29
6
NCQ performance
I''ve been looking into the performance impact of NCQ. Here''s what i found out: http://blogs.sun.com/erickustarz/entry/ncq_performance_analysis Curiously, there''s not too much performance data on NCQ available via a google search ... enjoy, eric
2016 Apr 20
2
Link using a linker script
For example something like STARTUP ( http://wiki.osdev.org/Linker_Scripts#STARTUP) is not accepted by the LLVM LLD. :-/ On Wed, Apr 20, 2016 at 9:08 PM, Sky Flyer <skylake007 at gmail.com> wrote: > Yeah I found it, that's nice. Thanks a milion. > Could you please tell me how can I specify my bootstrap (startup code) in > the linking process? > > > On Wed, Apr 20, 2016
2008 May 23
3
Rss-wxruby
Bonjour Alex. J''ai créer une application(Rss-wxruby) et je l''ai déposée en téléchargement sur le site "Tom''s guide". Ils ont créer les screenshots, et la problème: Il y a des carrés qui ressortent de partout??? Voilà un url pour l''exemple du problème avec les carrés qui ressortent:
2020 Mar 02
2
[PATCH] drm/bochs: Remove vga write
On Fri, Feb 28, 2020 at 1:57 AM Gerd Hoffmann <kraxel at redhat.com> wrote: > > On Thu, Feb 27, 2020 at 01:04:54PM -0800, Alistair Francis wrote: > > The QEMU model for the Bochs display has no VGA memory section at offset > > 0x400 [1]. By writing to this register Linux can create a write to > > unassigned memory which depending on machine and architecture can result
2020 Mar 02
2
[PATCH] drm/bochs: Remove vga write
On Fri, Feb 28, 2020 at 1:57 AM Gerd Hoffmann <kraxel at redhat.com> wrote: > > On Thu, Feb 27, 2020 at 01:04:54PM -0800, Alistair Francis wrote: > > The QEMU model for the Bochs display has no VGA memory section at offset > > 0x400 [1]. By writing to this register Linux can create a write to > > unassigned memory which depending on machine and architecture can result
2007 Mar 15
20
C''mon ARC, stay small...
Running an mmap-intensive workload on ZFS on a X4500, Solaris 10 11/06 (update 3). All file IO is mmap(file), read memory segment, unmap, close. Tweaked the arc size down via mdb to 1GB. I used that value because c_min was also 1GB, and I was not sure if c_max could be larger than c_min....Anyway, I set c_max to 1GB. After a workload run....: > arc::print -tad { . . . ffffffffc02e29e8
2007 May 14
37
Lots of overhead with ZFS - what am I doing wrong?
I was trying to simply test bandwidth that Solaris/ZFS (Nevada b63) can deliver from a drive, and doing this: dd if=(raw disk) of=/dev/null gives me around 80MB/s, while dd if=(file on ZFS) of=/dev/null gives me only 35MB/s!?. I am getting basically the same result whether it is single zfs drive, mirror or a stripe (I am testing with two Seagate 7200.10 320G drives hanging off the same interface
2015 Dec 29
4
How to check for 64-bit CPU?
Rafa?l Carr? wrote: > That would need a special case for Linux x32 which is x86_64 with 32 > bits pointers It won't be wrong for x32, just sub-optimal. Please feel free to suggest a way to detect x32. Erik -- ---------------------------------------------------------------------- Erik de Castro Lopo http://www.mega-nerd.com/
2013 Mar 12
2
[LLVMdev] LNT BenchmarkGame
On 12 March 2013 19:21, Hal Finkel <hfinkel at anl.gov> wrote: > +1 > > There are a couple of example implementations here which are only a few > lines long: > http://wiki.osdev.org/Random_Number_Generator I was going to rant about the quality of simple LCGs but it seems that *all* standard implementations rely on that, so the argument of using a standard library against a
2016 Feb 12
3
CloneFunction during LTO leads to seg fault?
In general I use DebugInfoFinder and clear out Metadata if GV in null or GV->isDeclaration(). If there is any interest, I can post that patch... Sergei --- Qualcomm Innovation Center, Inc. is a member of Code Aurora Forum, hosted by The Linux Foundation > -----Original Message----- > From: Tobias Edler von Koch [mailto:tobias at codeaurora.org] > Sent: Friday, February 12, 2016
2008 Mar 19
3
RPM verify weirdness
Hi all, Can anyone explain this to me? (CentOS 4/5) # rpm -qf /etc/exports setup # rpm -V setup S.5....T c /etc/bashrc S.5....T c /etc/printcap ..?..... c /etc/securetty # echo '#### foo' > /etc/exports # cat /etc/exports #### foo # rpm -V setup S.5....T c /etc/bashrc S.5....T c /etc/printcap ..?..... c /etc/securetty I thought verify was supposed to check
2008 Mar 13
2
graphics defaults
Can someone point me to a justification for the design decisions, which seem to be similar in lattice and ggplot2, of (1) gray backgrounds and (2) filled points? [I seem to remember seeing somewhere the opposite recommendation for points, i.e. that open points make it much easier to see if there are overlapping values -- and this would be a reason that pch=1 gives an open circle ...] cheers
2016 Feb 09
2
CloneFunction during LTO leads to seg fault?
Hi Medhi, Thanks for you reply. Here is the full output of -print-after-all [1] and just the module itself after my pass[2]. I've looked over the IR, but I can't see anything obviously wrong. I'm not sure what you meant by: > You may want to try to add it at the end of the pipeline My pass is the last one added inside populateLTOPassManager. Should I add it to the
2007 Apr 26
3
Extension languages and Compiz.
My recent work on Compiz-scheme has brought to my attention several problems preventing a real compiz extension language. Note that when I refer to an extension language, I am not referring to the ability to add plugins in some other languages, but more of something in the vein of emacs lisp. The major problem right now is extension languages are locked in to one plugin and what core exposes.