search for: lehigh

Dear LLVM developers, I am Shen, a PhD student at Lehigh Univ. PA. Now I am implementing a Program Dependence Graph(PDG) on LLVM. I have 4 passes here: 1. ProgramDependenceGraph (a *ModulePass *on the highest level) 2. DataDependenceGraph (a Intermediate *FunctionPass*). 3. FlowDependenceAnalysis Pass (a intermediate *FunctionPass*) which uses llvm bui...

...''t think moving to update 9 is an option (yet), nor is OSOL or SXCE. Bottom line: Do ZFS / mpxio / cfgadm issues still make mpxio an iffy proposition as a reliability enhancement? Is there a patch set that addresses ZFS / cfgadm / mpxio issues for s10u7? TIA. Bryan -- Bryan Hodgson Lehigh University Computer Science & Engineering Packard Lab 019 room 115 19 Memorial Drive West Bethlehem, PA 18015-3016

Dear LLVM developers, My name is Ben Niu and I am a Ph.D. student at Lehigh University. I compiled the MUSL C library using Clang 3.3, and dumped the generated LLVM IR files. I found that the MUSL-defined FILE struct (aliasing __FILE_s) struct __FILE_s { unsigned flags; unsigned char *rpos, *rend; int (*close)(FILE *); unsigned char *wend, *wpos; unsig...

...; that became available in early summer 2011. CentOS 6.2 x64 install halts during initial boot, with boot messages stopping at "Detecting hardware". I'm clueless on this one. Suggestions appreciated. Does anyone have CentOS running on this hardware or this chipset? Bryan Hodgson Lehigh University

...]# man doveadm|egrep -i -- -v -v Enables verbosity, including progress counter. [root]# FWIW this is CentOS 7 with dovecot installed from an RPM: [root]# yum list dovecot Loaded plugins: fastestmirror, langpacks, versionlock Loading mirror speeds from cached hostfile * base: linux.cc.lehigh.edu * epel: mirror.umd.edu * extras: mirror.es.its.nyu.edu * updates: mirrors.advancedhosters.com Installed Packages dovecot.x86_64 1:2.2.10-4.el7_0.1 @updates thx/stv

Dear All, To add to this, you can find examples of inserting NOPs for X86 in the CFI pass originally written at Lehigh University that we ported to 64-bit X86 for SVA: https://github.com/jtcriswell/SVA/blob/master/llvm/lib/Target/X86/X86CFIOptPass.cpp Alternatively, you could use an InlineAsm call at the LLVM IR level (which I think would be easier to implement). Regards, John Criswell On 7/9/15 8:56 AM, Dan...

...w it at all. I was trying to mount and partition it using Webmin, but I can't figure out the device name I need to give it to mount and partition it. How is the best way to figure that out? This particular server is running CentOS 4. Thanks, Tim -- Tim McGeary Senior Systems Specialist Lehigh University 610-758-4998 tim.mcgeary at lehigh.edu Google Talk: timmcgeary

Hi all, i hope to get the MemoryLocation for argument %1 in a CallInst like "call void @function(i32* %1)", and i found an interface "getForArgument()" which seems available for this. However, i don't know how to correcly fill the 3rd argument TargetLibraryInfo in my own code and can't find an example in google. Does anybody know how to do it? Or some other advice for

Hi all, I plan to use LLVM to instrument/rewrite X86 instructions during the compilation of a program. For example, insert checking target instructions before jmp instructions, or rewrite a instruction to prevent code using a specific register. I think the work should be done at the CodeGen phase, but I'm not quite clear how can I start. Can anyone give me some suggestion? Thanks very much,

Hi all, I plan to use LLVM to instrument/rewrite X86 instructions during the compilation of a program. For example, insert checking target instructions before jmp instructions, or rewrite a instruction to prevent code using a specific register. I think the work should be done at the CodeGen phase, but I'm not quite clear how can I start. Can anyone give me some suggestion? Thanks very

...Enables verbosity, including progress counter. > [root]# > > FWIW this is CentOS 7 with dovecot installed from an RPM: > > [root]# yum list dovecot > Loaded plugins: fastestmirror, langpacks, versionlock > Loading mirror speeds from cached hostfile > * base: linux.cc.lehigh.edu > * epel: mirror.umd.edu > * extras: mirror.es.its.nyu.edu > * updates: mirrors.advancedhosters.com > Installed Packages > dovecot.x86_64 1:2.2.10-4.el7_0.1 @updates Documentation for -o was added recently, it is not even on the man-pages of the 2.2.15 release. b...

dovecot --version 2.2.10 I've only be able to status a mailbox for currently existing users, is it possible to status a mailbox reloaded from tape to an alternate location? The user may or may not exist at this time, but I still need to inspect the mailbox ... thank you, Steve

On Tue, Sep 10, 2013 at 7:13 PM, Ben Niu <niuben003 at gmail.com> wrote: > Dear LLVM developers, > > My name is Ben Niu and I am a Ph.D. student at Lehigh University. I > compiled the MUSL C library using Clang 3.3, and dumped the generated LLVM > IR files. I found that the MUSL-defined FILE struct (aliasing __FILE_s) > > struct __FILE_s { > unsigned flags; > unsigned char *rpos, *rend; > int (*close)(FILE *); >...

..., although non-control data attacks are still possible. The fastest CFI implementation at present has an average overhead of 7.74% on 32-bit x86, and by using a very conservative callgraph, you can use it without whole program analysis. I've got the LLVM implementation from the authors at LeHigh and am updating the code for x86_64 and LLVM 3.1 for use in one of my research projects. If you're interested in the code, I can ask them if they'd be willing to release the code as open-source. Optimizations for memory safety tools like ASan, SAFECode, and SoftBound would be even bet...

...endency: libreoffice6.0-ure <= 6.0.4.2-2 for package: libobasis6.0-core-6.0.4.2-2.x86_64 Loading mirror speeds from cached hostfile * base: mirror.net.cen.ct.gov * elrepo: mirrors.coreix.net * epel: fedora-epel.mirrors.tds.net * epel-debuginfo: fedora-epel.mirrors.tds.net * extras: linux.cc.lehigh.edu * nux-dextop: mirror.li.nux.ro * updates: mirror.atlanticmetro.net --> Processing Dependency: libreoffice6.0-ure >= 6.0.4.2 for package: libobasis6.0-core-6.0.4.2-2.x86_64 while trying to work around that I "yum remove"d all existing libreoffice rpms, but that didn't fix...

John, thanks for your helpful advice. My ultimate goal is to construct a full instruction-level program dependence graph for a given IR file. The hard point is how to establish the correct data dependence edges when some function arguments are multi-level pointers. To solve this problem I hope to check the point-to level for each pointer variable. I think the data dependence through pointers can

My pass runs after optimization passes. On Thu, Jul 9, 2015 at 1:11 PM, David Chisnall <David.Chisnall at cl.cam.ac.uk> wrote: > Hi, > > What are you trying to achieve? Inserting NOPs into LLVM IR is likely to > be pointless, as optimisations (in the IR or SelectionDAG) will remove them > before machine code generation. If you want to insert NOPs into the > generated

> On Dec 9, 2014, at 11:00 AM, Steffen Kaiser <skdovecot at smail.inf.fh-brs.de> wrote: > > -----BEGIN PGP SIGNED MESSAGE----- > Hash: SHA1 > > On Tue, 9 Dec 2014, Stephen Lidie wrote: >>> On Dec 9, 2014, at 2:34 AM, Steffen Kaiser <skdovecot at smail.inf.fh-brs.de> wrote: >>> On Mon, 8 Dec 2014, Stephen Lidie wrote: >>> >>>>

Hello, I plan to implement "Stack Smashing Protection - Strong" support in LLVM. Below is a description of this feature and an overview of the implementation plan. I have divided up the implementation into stages that can be delivered incrementally. I'm looking for any feedback (suggestions, requests, etc) before I actually begin the work. Thank you! Josh

Hi all, Usually if we want to get the called Function we can directly use CallInst->getCalledFunction(), however, today i encounter an unusual CallInst as follows: %call11 = call double (...)* bitcast (double ()* @quantum_frand to double (...)*)() the original C source involve type cast: float u,v; extern double quantum_frand(); u = 2 * quantum_frand() - 1; v = 2 * quantum_frand() -