similar to: [LLVMdev] how to transform elf binary to llvm IR?

For every level of translation [in terms of "human readable -> machine code translation", not someone translating a literary work from one language to another - although often some subtle details are lost here too], a little bit of the semantic meaning is lost. This means that you can almost never completely reconstruct the code in original form from the machine-code, or the C-code

2015-11-30 12:58 GMT+08:00 Chris Bieneman <beanz at apple.com>: > The autotools build system is officially deprecated and will be removed in a > future release. > > CMake is the recommended configuration system, but it is only a > configuration system. It generates build files for multiple different build > systems. One of the most popular build systems is Ninja. You cannot

2015-08-29 14:45 GMT+08:00 Martell Malone <martellmalone at gmail.com>: > Why are there two ways to compile LLVM? >> make and cmake! >> What's the difference of those two ways? > > > make and cmake are used together not separately. > cmake is a high level generator that creates a makefile for make > > I compile llvm according to this website(

Ask a simple question : I svn checkout compiler-rt in llvm/project. And I compile llvm through cmake. How can I make for all those testing files? make test? - mudongliang 2015-09-02 0:58 GMT+08:00 Kostya Serebryany <kcc at google.com>: > Take a look at > > clang.llvm.org/docs/ControlFlowIntegrityDesign.html > clang.llvm.org/docs/ControlFlowIntegrity.html > > And the

I want to create an experiment to show the effectiveness of cfi : For example , I first need a program with vulnerability so that we can hijack its control flow; then I enforce cfi of llvm and we can't hijack its control flow. Do you have any advice for me? - mudongliang -------------- next part -------------- An HTML attachment was scrubbed... URL:

When I see one book about llvm and choose the building method between autotools, cmake, and ninja building methods, I was confused. Is there any link about this content? Thanks for reply. -- My best regards to you. No System Is Safe! mudongliang

2015-09-01 11:38 GMT+08:00 John Criswell <jtcriswel at gmail.com>: > On 8/31/15 10:43 PM, 慕冬亮 via llvm-dev wrote: > > I want to create an experiment to show the effectiveness of cfi : > For example , > I first need a program with vulnerability so that we can hijack its > control flow; > > then I enforce cfi of llvm and we can't hijack its control flow. > >

Hello everyone, I have written simple LLVM passes, but I cannot able to write a MachineFunctionPass pass. I am following the steps form the following link but it is not working: http://www.gabriel.urdhr.fr/2014/09/26/adding-a-llvm-pass/ Please share the sample MachineFunctionPass code or steps to follow to write MachineFunctionPass. Thanks, Bala -- Thanks, Bala IIITA Allahabad --------------

2015-12-01 1:20 GMT+08:00 Chris Bieneman <beanz at apple.com>: > > On Nov 29, 2015, at 9:09 PM, 慕冬亮 <mudongliangabcd at gmail.com> wrote: > > 2015-11-30 12:58 GMT+08:00 Chris Bieneman <beanz at apple.com>: > > The autotools build system is officially deprecated and will be removed in a > future release. > > CMake is the recommended configuration system,

First you should learn how to write a pass and then a MachineFunctionPass. >From LLVM website, you can refer to http://llvm.org/docs/WritingAnLLVMPass.html And for outside pass, you can refer to http://adriansampson.net/blog/llvm.html It's a great article. And the author put the source code on Github <https://github.com/sampsyo/llvm-pass-skeleton>. 2016-03-01 14:36 GMT+08:00

In LLVM, is there any way to monitor read operation to some special blocks? For example, I have a memory block from A1 to A2 to protect. Any read operation to the address between A1 and A2 will be caught. And I can return other values, not true values to them or just report errors about this read operation. - mudongliang

Hi, It looks like the DeadStoreElimination optimization doesn't work across BasicBlock boundaries. The project I'm working on (https://github.com/trailofbits/mcsema), would tremendously benefit from even simple cross-block DSE. There was a patch to do non-local DSE few years ago (http://lists.cs.uiuc.edu/pipermail/llvmdev/2010-January/028751.html), but seems that the patch was never

Why are there two ways to compile LLVM? make and cmake! What's the difference of those two ways? - mudongliang

Hi All, 2 of my summer interns (Aimee Dipietro and Greg Simpson) used their time over the summer to resurrect the LLVM C Backend: https://github.com/draperlaboratory/llvm-cbe Improvements include recovery of simple for/while loops (instead of goto), better variable naming, inline asm support, and making it work on a more recent version of llvm. I believe they used the repository here as a

Hey Matt, That's awesome. Thank you very much for all the information and clarification! Just a few follow up questions. Could you kindly shed some lights on it? Thank you! 1. I tried to tweak the code in the following way: - Clang [-> LLVM-IR]: https://llvm.godbolt.org/z/n9rGrs - [LLVM-IR ->] opt: https://llvm.godbolt.org/z/Uc6h5Y And i note that the outputs are: Alias sets for

Hi again! Replying in chronological order: > On Thu, Jul 9, 2020 at 6:51 PM Shuai Wang <wangshuai901 at gmail.com > <mailto:wangshuai901 at gmail.com>> wrote: > > Hey Matt, > > That's awesome. Thank you very much for all the information and > clarification! Just a few follow up questions. Could you kindly shed > some lights on it? Thank

Hi! On 7/10/2020 07:17, Shuai Wang wrote: > Hello! > > Thank you very much! Yes, that makes a lot of sense to me. However, just > want to point out two things that are still unclear: > > 1. The output contains a alias set of only one element, for instance: > "must alias, Mod       Pointers: (i32* %y, LocationSize::precise(4))" > > This one really confused

I want to use Clang to do a *source to source transformation* of cpp code, I have achieve certain goals like this tutorial<http://eli.thegreenplace.net/2012/06/08/basic-source-to-source-transformation-with-clang/> and currently I am trying to assign a unique ID to each basic control block. Could anybody give me some help about how to find the basic control block? Be more specified, I think

Hello, I am performing alias analysis toward the following simple code: struct MyStruct { int * f1; int * f2; }; void NOALIAS(void* p, void* q){ } int main() { struct MyStruct s[2]; int a,b; s[0].f1 = &a; s[1].f1 = &b; NOALIAS(s[a].f1, s[b].f2); return 0; } When I use the following command to generate .bc code and conduct alias analysis: clang -c -emit-llvm t.c -O2 opt -basicaa

With pleasure we announce the release of tinc versions 1.0.34. Here is a summary of the changes in tinc 1.0.34: * Fix a potential segmentation fault when connecting to an IPv6 peer via a proxy. * Minor improvements to the build system. * Make the systemd service file identical to the one from the 1.1 branch. * Fix a potential problem causing IPv4 sockets to not work on macOS. Thanks to