similar to: JIT - Resolve obj file without a main

Hi Lang, I'm using Windows. I was parsing an IR-File and added the Module to the ExectuionEngine. If I than searched for a function, I just got 0. But when the module had a main, I got an address. I solved the problem via a call to "generateCodeForModule". The JIT didn't even called my SymbolResolver in this special case. Could you please tell me, if there is a way to

Hello Lang, so you are part of the "Jitter-Team"? I'm really interested in this whole jitting-process. I wanted to know, is there a way to load other obj-files, than the one created with clang? Could I load - for example - a obj-File from VisualStudio? Or will the namemangeling fail? Kind regards Björn From: Lang Hames <lhames at gmail.com> To: bjoern.gaier at

Hi Bjoern, CCing cfg-dev (since that's where the conversation started) and llvm-dev (since it's relevant there). Do you know if there is a way to obtain the fully resolved obj-code? I > wanted to load the functions into a shared memory, but how? The only thing > I receive is a function pointer, but I don't know how large the function > 'behind' is. Even a call to

Hello, I append another clue I found out: The problem is definitely not caused by "__ImageBase" the problem comes with the "OFFSET". I generated another object file which crashed. The commonality: mov edx, DWORD PTR ?normalPlanschbecken@@3HA ; normalPlanschbecken lea rcx, OFFSET FLAT :??_C at _0CC@LCMJAIPO at Reading?5?$CCnormalPlanschbecken?$CC?5?$CFi@

I wouldn't be surprised if JITing COFF files on Windows doesn't work so well, since the object file format assumes most symbols are dllimport or within the local 2GB module address range. I'm not familiar with the current JIT state of the art, though. On Thu, Mar 22, 2018 at 1:45 AM via llvm-dev <llvm-dev at lists.llvm.org> wrote: > Hello, > > I append another clue I

Hello LLVM-people, I have a problem and I hope that you could help me. I'm jitting some .BC files at runtime with the LLVM under Windows 7. Thanks to the function " getImageBase()" located in RuntimeDyldCOFFX86_64.h I'm able to support exceptions. But when moving the program to Windows 10, the exceptions will crash the program. I read that the __ImageBase is important for

Historically? I implemented support for exceptions back in LLVM 3.3, before LLVM had an implementation of a Windows unwinder. Currently? As recent as LLVM 4.0, I don't think the JIT was fully capable of handling COFF files, and LLVM wouldn't emit the correct sections (with the COFF-formatted unwind tables) when used in ELF mode. The prolog is known to be standard since Julia disables FPO

Just to make sure: Both Operatingsystems have the same architecture (x64 or x86)? And in both cases you JIT to the same Architecture? 2018-02-05 16:21 GMT+01:00 via llvm-dev <llvm-dev at lists.llvm.org>: > Hello LLVM-people, > > I have a problem and I hope that you could help me. I'm jitting some .BC > files at runtime with the LLVM under Windows 7. Thanks to the function

Still no progress with this problem. Only that non-member functions seems to be working... Also: Even when I set the target triple of the Module (when the file was parsed at runtime) to "COFF" nothing changes... From: Bjoern Gaier/HE/HORIBA To: llvm-dev at lists.llvm.org Cc: cfe-dev at lists.llvm.org Date: 08.02.2018 12:28 Subject: Re: Calling virtual elf functions

Hello everyone, I was following the discussion, but I have to admit, that my skills aren't high enough to follow you guys. For my current exception problem, I don't have to stick around with the PECOFF format, so I used clang to don't compile to a PECOFF, but to a ELF file. Interesting, now I'm missing the functions: __cxa_allocate_exception __cxa_throw _ZTI I loaded the DLL

Hello LLVM-People, I'm still a beginner with the LLVM, but I really like the concept and the possibilities with the JIT. Currently I compile simple functions with clang-cl into bitcode files. After this I use another program to JIT this bitcode files and execute functions of it - like lli. Thanks to a lot of mails and so on, I understood that a bitcode file is in fact still IR-Code, but

Hello friendly LLVM-World, because I don't know if I had send my problem to the correct Mailing-List, I will send my problem to this address too. I'm not subscribed to this list, so please add my in CC if you response. Kind regards Björn From: Bjoern Gaier/HE/HORIBA To: Clang Dev <cfe-dev at lists.llvm.org>, "cfe-dev" <cfe-dev-bounces at lists.llvm.org>

Hello everyone, I have some questions about the possibilities with the LLVM but I'm not sure where to gather the information. 1.) Can I teach the LLVM new platform depended intrinsics? Like I provide assembly code and want to create a custom intrinsic for it. 2.) Does the IR language have some kind of template support? I'm not sure if this even possible - but I thought about having a

Hello Stefan, I'm happy someone replied to my problem! Many thanks! To be honest... I didn't understood much of your mail. I'm a beginner with the JIT - so I will explain what I've done. To manage the memory and resolve symbols, I'm using my own Resolver-Class, which overloads the allocation and the findSymbol functions. I've noticed today, that the

Heyho both Mailinglists, I'm not sure if I encountered a bug or if I'm doing something wrong. I compiled a "Hello World"-function with Clang to LLVM-IR code, while passing the "-mretpoline" flag. I tried jitting and calling that function with the KaleidoscopeJIT code, but when calling "lookup" for that function the application crashed. I also tried that file

Hi Björn, I'm not sure I understand what you are actually trying to achieve. Do you want to be able to debug from your main code, and step into the JITed code? Do you want to be able to set breakpoints, list callstacks, etc in the JITed code? Do you want to, from a crash, identify where in your JITed code it went wrong? The first two are definitely one or more order(s) of magnitude harder

But in my module this function already exist… I first want to delete it but without also deleting the calls to it… From: Boldizsar.Palotas at esa.int <Boldizsar.Palotas at esa.int> Sent: Donnerstag, 13. Dezember 2018 10:53 To: Gaier, Bjoern <Bjoern.Gaier at horiba.com> Cc: LLVM Developers Mailing List <llvm-dev at lists.llvm.org> Subject: Re: [llvm-dev] Setting a function in a

On Mon, Jan 14, 2019 at 3:21 AM Gaier, Bjoern via llvm-dev <llvm-dev at lists.llvm.org<mailto:llvm-dev at lists.llvm.org>> wrote: Hello LLVM-World, currently I play around with a „llvm::Module” and an external function defined there “puts”. Normally this function gets resolved in the JIT-Process but I wonder about two things: 1. Can I resolve the function already in this step? I

> So... there is no way to make throw and catch working in a jitted code > under Windows? > I have used throw and catch in jitted code, so "no way" is too strong. But there's a large range of possible states between "no way" and "always enabled OOTB". Currently, this is pretty close to the "mostly unimplemented" side of the spectrum in LLVM.

Hi Björn To first answer your questionin the subject: For x86 registerEHFrames() is only a stub. For x86_64 registerEHFrames() is implemented properly in RuntimeDyldCOFFX86_64, calling MemMgr.registerEHFrames() for each EH frame section. It should be called and work out of the box without your involvement, but unfortunately it won't solve your issue. All the essential information is there in