search for: loadlibrarypermanently

...om> wrote: >> > >> > HI >> > Did you run the static constructor and destructor? How did you make >> your process symbols visible to ORC jit? >> >> Yes. It's the constructor that generates the undefined symbol error. >> We use DynamicLibrary::LoadLibraryPermanently(nullptr) to add process >> symbols. >> >> > Could you please share us the for what symbols you get undefined >> references :-) >> >> Certainly! Mangled: >> >> _ZNSi4swapERSi >> _ZNSt13basic_filebufIcSt11char_traitsIcEE4swapERS2_ >&...

...4:56 PM Praveen Velliengiri <praveenvelliengiri at gmail.com> wrote: > > HI > Did you run the static constructor and destructor? How did you make your process symbols visible to ORC jit? Yes. It's the constructor that generates the undefined symbol error. We use DynamicLibrary::LoadLibraryPermanently(nullptr) to add process symbols. > Could you please share us the for what symbols you get undefined references :-) Certainly! Mangled: _ZNSi4swapERSi _ZNSt13basic_filebufIcSt11char_traitsIcEE4swapERS2_ And unmangled: std::basic_istream<char, std::char_traits<char> >:...

...ast, bool EnumModules) { ExecutionEngine *EE = 0; if (EnumModules) { // Make sure we can resolve symbols in the program as well. The zero arg // to the function tells DynamicLibrary to load the program, not a library. if (sys::DynamicLibrary::LoadLibraryPermanently(0, ErrorStr)) return 0; } ... Your help would be appreciated. Rob.

Greetings, LLVM wizards. We are using Clang and Orc JIT (v1) to compile and execute C++ code on the fly. If a C++ module calls functions from external libraries, we add them via DynamicLibrary::LoadLibraryPermanently(). The problem we have run into recently is when a module calls a function from the STL -- in particular this swap() function for input streams: #include <fstream> std::ifstream stream1, stream2; stream1.swap(stream2); When we run the constructors for the module, we get two undefined symbo...

Hi Rob, Can you comment on exactly what the problem is you want to solve? Is it a performance issue with LoadLibraryPermanently, or do you simply not want the external symbols to be resolved from within the JIT? - Daniel On Wed, Jul 22, 2009 at 11:22 PM, Evan Cheng<evan.cheng at apple.com> wrote: > > On Jul 22, 2009, at 9:43 PM, Rob Grapes wrote: > >> Hi, >> >> Would it be possible to mak...

...bool EnumModules) { > ExecutionEngine *EE = 0; > if (EnumModules) { > // Make sure we can resolve symbols in the program as well. The > zero arg > // to the function tells DynamicLibrary to load the program, not > a library. > if (sys::DynamicLibrary::LoadLibraryPermanently(0, ErrorStr)) > return 0; > } > ... > > Your help would be appreciated. > > Rob. > > _______________________________________________ > LLVM Developers mailing list > LLVMdev at cs.uiuc.edu http://llvm.cs.uiuc.edu > http://lists.cs.uiuc.edu/mailman/...

>> llvm::sys::DynamicLibrary::LoadLibraryPermanently(nullptr) This is one is a bit tricky and hard to find. I spent quiet some time digging into MC and ORC JIT execution engines trying to find what makes them work. The problem is that this trick (LoadLibraryPermanently) happens inside of EngineBuilder, despite that the functionality belongs to a JIT...

...v-bounces at cs.uiuc.edu] On Behalf Of Daniel Dunbar Sent: Thursday, 23 July 2009 6:35 p.m. To: LLVM Developers Mailing List Subject: Re: [LLVMdev] Possible change to ExecutionEngine::create() Hi Rob, Can you comment on exactly what the problem is you want to solve? Is it a performance issue with LoadLibraryPermanently, or do you simply not want the external symbols to be resolved from within the JIT? - Daniel On Wed, Jul 22, 2009 at 11:22 PM, Evan Cheng<evan.cheng at apple.com> wrote: > > On Jul 22, 2009, at 9:43 PM, Rob Grapes wrote: > >> Hi, >> >> Would it be possible to mak...

...work on Windows? -- lg > On May 18, 2016, at 1:52 PM, Lang Hames <lhames at gmail.com> wrote: > > Hi Larry, > > You're basically there, but you're hitting a couple of subtle issues: > > (1) On both platforms you'll want to call llvm::sys::DynamicLibrary::LoadLibraryPermanently(nullptr) at program startup. This makes exported symbols in the main program searchable by RTDyldMemoryManager::getSymbolAddressInProcess (important for making 'sqr' findable on any platform). > > (2) On Linux (if I understand correctly) symbols aren't exported from the main proc...

...s? > > -- lg > > On May 18, 2016, at 1:52 PM, Lang Hames <lhames at gmail.com> wrote: > > Hi Larry, > > You're basically there, but you're hitting a couple of subtle issues: > > (1) On both platforms you'll want to call > llvm::sys::DynamicLibrary::LoadLibraryPermanently(nullptr) at program > startup. This makes exported symbols in the main program searchable by > RTDyldMemoryManager::getSymbolAddressInProcess (important for making 'sqr' > findable on any platform). > > (2) On Linux (if I understand correctly) symbols aren't exported from...

Albert and Anton, thanks for all the answers. I tried to load a DLL with DynamicLibrary::LoadLibraryPermanently and it works perfectly, so there is no need to use ExecutionEngine::addGlobalMapping. However Function objects still need to be constructed since they are required when creating a call, right? Victor 2009/6/15 Albert Graef <Dr.Graef at t-online.de> > Victor Zverovich wrote: > > I...

Hello, Attached is a simple fix for getting error messages from dlerror in LoadLibraryPermanently. The current code modifies the value of a pointer that is passed by value, so the caller never gets the message. Hope this helps, Julien -- Julien Lerouge PGP Key Id: 0xB1964A62 PGP Fingerprint: 392D 4BAD DB8B CE7F 4E5F FA3C 62DB 4AA7 B196 4A62 PGP Public Key from: keyserver.pgp.com ------------...

...whereas the second one provides extra passes which make use of the first library's support code. In other words, the symbols loaded in for the first library should be available when the second library is loaded. In LLVM 2.1, this approach worked, but I noticed that the DynamicLibrary::LoadLibraryPermanently(...) implementation in $LLVM/ lib/System/DynamicLibrary.cpp has been altered for LLVM 2.3. The rewrite does not make loaded symbols available for future loaded libraries. Changing on line 64: void *H = dlopen(Filename, RTLD_LAZY); ... into ... void *H = dlopen(Filename, RTLD_LAZY | RTLD_GL...

...ectory afaik, this error is related to lli using dlopen() with a NULL path to resolve symbols for the main program (lli program) itself. This happens when lli initially tries to create an ExecutionEngine ("EE = builder.create();" in lli.cpp), which leads to "if (sys::DynamicLibrary::LoadLibraryPermanently(0, ErrorStr)" in ExecutionEngine.cpp. Could anyone tell me how to resolve this? Thanks in advance! Toan Mai. -- View this message in context: http://old.nabble.com/Running-LLVM-JIT-on-qemu-system-arm-tp33763272p33763272.html Sent from the LLVM - Dev mailing list archive at Nabble.com.

On Jul 22, 2009, at 5:23 PM, Chris Lattner wrote: > > On Jul 22, 2009, at 1:32 PM, Dan Gohman wrote: > >>>> >>>> - A null pointer is associated with no addresses. >>>> >>> >>> A null pointer in address space 0. >> >> I'm not fond of weird address-space semantics, but for consistency >> with what the optimizer is

...to make no difference: "LLVM ERROR: Program used external function '_a_outside_func' which could not be resolved!". ............. After a day's wasting I unconsciously packed my external function "a_outside_func" into a shared object,called llvm::sys::DynamicLibrary::LoadLibraryPermanently("ext_func.so"); at the beginning of the program and named the function "_a_outside_func" in the IR. OMG IT WORKS THEN?! So I'd like to ask why llvm cant resolve my external function from the program itself(in fact i dont get such problems on linux)? -------------- next part...

...9;t need any additional linker flags. Very nice. Thanks, Frank On 06/28/2018 04:38 PM, Alex Denisov wrote: > Hi Frank, > > If I am not mistaken it doesn't look in the whole process space by default. > Please, try loading all the symbols explicitly: > > sys::DynamicLibrary::LoadLibraryPermanently(nullptr); > > If it doesn't help, then you may try compiling your host program with -rdynamic, otherwise dlsym may not see all the symbols. At least it was the case for me on Linux. > > I hope it helps. > > Cheers, > Alex. > >> On 28. Jun 2018, at 21:40, Frank Wint...

...sed external function > > '_a_outside_func' which could not be resolved!". > > ............. > > After a day's wasting I unconsciously packed my external function > > "a_outside_func" into a shared object,called > > llvm::sys::DynamicLibrary::LoadLibraryPermanently("ext_func.so"); at the > > beginning of the program and named the function "_a_outside_func" in the > IR. > > OMG IT WORKS THEN?! > > So I'd like to ask why llvm cant resolve my external function from the > > program itself(in fact i dont get such...

...n@@GLIBC_2.1 (in /lib/libdl.so.2) ==10132== by 0x87076FC: sys_dl_open ( ltdl.c:1110) ==10132== by 0x8707F75: tryall_dlopen (ltdl.c:2431) ==10132== by 0x8709500: try_dlopen (ltdl.c:3374) ==10132== by 0x87096A8: lt_dlopen (ltdl.c:3420) ==10132== by 0x86FE22E: llvm::sys::DynamicLibrary::LoadLibraryPermanently(char const*) ( DynamicLibrary.cpp:103) ==10132== by 0x86F4599: llvm::PluginLoader::operator=(std::string const&) (PluginLoader.cpp:31) ==10132== by 0x83D3D79: void llvm::cl::opt_storage<llvm::PluginLoader, false, true>::setValue<std::string>(std::string const&) ( CommandLi...

...at adding support for this. - Lang. On Fri, Aug 14, 2015 at 7:38 AM, Andy Somogyi <andy.somogyi at gmail.com> wrote: > After some fiddling with it, it does in fact look like it works as you > describe Lang. > > The trick was you had to call > > llvm::sys::DynamicLibrary::LoadLibraryPermanently(nullptr); > > to add the currently running process before calling > > llvm::RTDyldMemoryManager::getSymbolAddressInProcess(name);. > > Also, all of the function needs to be declared as extern C to avoid name > mangling. > > I however think that adding the addGlobalMapping...