search for: disablesymbolsearch

Out of curiosity, I'm replacing the JIT with MCJIT on my compiler. As all "external" functions are provided by the language's FFI mechanism, it does MyExecutionEngine->DisableSymbolSearching(); MyExecutionEngine->InstallLazyFunctionCreator(&MyLazyFunctionCreator); which works fine with the JIT. However, MCJIT insists on resolving unknown symbols by searching them outdoors and seems oblivious of the existence of MyLazyFunctionCreator. Is this a bug? Is there a workaround, o...

...with the LLVM JIT. It is very important that the driver does not have access to any other function in the application except those I provide. It's not OK for our application to abort if a driver calls an undefined function - I want to just disable _that driver_ in that event. I can use DisableSymbolSearching() but that causes application to abort for unknown symbols. Please advice! /Marcus

On Oct 16, 2009, at 4:43 AM, Daniel Waterworth wrote: > Never mind, I used ExecutionEngine's InstallLazyFunctionCreator and > DisableSymbolSearching to cause malloc and free calls to be handled > by my logging functions. Sorry for the unnecessary list mail. No problem, this is a better way to go. The MallocInst and FreeInst instructions are about to be removed from LLVM IR. Malloc and free will be represented normal 'call'...

Never mind, I used ExecutionEngine's InstallLazyFunctionCreator and DisableSymbolSearching to cause malloc and free calls to be handled by my logging functions. Sorry for the unnecessary list mail. Is it possible to find out the size and beginning pointer of the current stack frame, from a function operating outside of the virtual machine, but called by a function within it? Thanks,...

Óscar Fuentes <ofv at wanadoo.es> writes: > Out of curiosity, I'm replacing the JIT with MCJIT on my compiler. As > all "external" functions are provided by the language's FFI mechanism, > it does > > MyExecutionEngine->DisableSymbolSearching(); > MyExecutionEngine->InstallLazyFunctionCreator(&MyLazyFunctionCreator); > > which works fine with the JIT. However, MCJIT insists on resolving > unknown symbols by searching them outdoors and seems oblivious of the > existence of MyLazyFunctionCreator. > > Is this...

Hello, I'm writing a virtual machine that functions as a sandbox based on llvm. In order to prevent programs from accessing memory that has not been allocated to them, I want to replace calls to malloc and free with calls to a logged functions that will record the memory that is being allocated to the program. Is it possible to cast/convert a MallocInst or FreeInst to a CallInst? Thanks,

...with the LLVM JIT. It is very important that the driver does not have access to any other function in the application except those I provide. It's not OK for our application to abort if a driver calls an undefined function - I want to just disable _that driver_ in that event. I can use DisableSymbolSearching() but that causes application to abort for unknown symbols. Please advice! /Marcus

...t; It is very important that the driver does not have access to any other > function in the application except those I provide. It's not OK for > our application to abort if a driver calls an undefined function - I > want to just disable _that driver_ in that event. > > I can use DisableSymbolSearching() but that causes application to > abort for unknown symbols. > > > Please advice! > > > /Marcus > _______________________________________________ > LLVM Developers mailing list > LLVMdev at cs.uiuc.edu http://llvm.cs.uiuc.edu > http://lists.cs.uiuc.edu/m...

...amp;a); } Preferably one which isn't destroyed by optimization. Thanks again, Daniel 2009/10/16 Chris Lattner <clattner at apple.com> > > On Oct 16, 2009, at 4:43 AM, Daniel Waterworth wrote: > > Never mind, I used ExecutionEngine's InstallLazyFunctionCreator and > DisableSymbolSearching to cause malloc and free calls to be handled by my > logging functions. Sorry for the unnecessary list mail. > > > No problem, this is a better way to go. The MallocInst and FreeInst > instructions are about to be removed from LLVM IR. Malloc and free will be > represented no...

...is very important that the driver does not have access to any other > function in the application except those I provide. It's not OK for > our application to abort if a driver calls an undefined function - I > want to just disable _that driver_ in that event. > > I can use DisableSymbolSearching() but that causes application to > abort for unknown symbols. An LLVM program can call any address, valid or not. If the programmer figures out the address of one of those "forbidden" functions, he can call it. You may write some pass for detecting suspicious constructs and rejec...

...e driver does not have access to any >> other >> function in the application except those I provide. It's not OK for >> our application to abort if a driver calls an undefined function - I >> want to just disable _that driver_ in that event. >> >> I can use DisableSymbolSearching() but that causes application to >> abort for unknown symbols. >> >> >> Please advice! >> >> >> /Marcus >> _______________________________________________ >> LLVM Developers mailing list >> LLVMdev at cs.uiuc.edu http://llvm.cs....

...MCJIT and Lazy Function Creators Óscar Fuentes <ofv at wanadoo.es> writes: > Out of curiosity, I'm replacing the JIT with MCJIT on my compiler. As > all "external" functions are provided by the language's FFI mechanism, > it does > > MyExecutionEngine->DisableSymbolSearching(); > MyExecutionEngine->InstallLazyFunctionCreator(&MyLazyFunctionCreator); > > which works fine with the JIT. However, MCJIT insists on resolving > unknown symbols by searching them outdoors and seems oblivious of the > existence of MyLazyFunctionCreator. > > Is th...

Hi, I am starting to poke at the LLVM JIT, which seems to be in need of some TLC. If you are a "sophisticated" JIT user and are using either internal APIs (either by integrating with LLVM, or by other C++ tricks), or are using obscure or poorly documented public APIs (e.g., why is runJITOnFunction exposed?) please make me aware of it! I reserve the right to break anything which