llvm

I want to replace indirect jmp *(eax) instructions in the code to mov *(eax),ebx; jmp *ebx for the x86 executables. Before implementing this, i would like to make LLVM compiler, log an output every time it detects a jmp *(eax) instruction by adding some print statements. Then i want to move on to replacing the indirect sequence. From what i have seen from google searches and articles, i can probably achieve this by modifying the x86asmprinter in the llvm backend. But i am not sure how to go about it. Any help or reading would be appreciated. Note: My actual requirement deals with indirect

clang supports plugins, and often this concept is used to build tools like static analysis and such. To start playing with it I took this example which prints all function names present in the target cpp file(s). I compiled the plugin running the following: clang++ -v -std=c++11 PrintFunctionNames.cpp \ $(llvm-config --cxxflags --ldflags) \ -o plugin.so -shared -Wl,-undefined,dynamic_lookup and then run it "by the book": clang++ \ -c main.cpp \ -Xclang -load \ -Xclang $PWD/plugin.so \ -Xclang -plugin \ -Xclang print-fns it works just fine: it prints the function names in main.cpp and exit

I have built the LLVM 3.4 from source using Cmake. I referred to documentation for Getting Started with the LLVM System using Microsoft Visual Studio for the installation. I now want to use the LLVM in my own project. I have added the LLVM libraries in VS 2012 using the Properties -> C/C++ -> General . When I try to build my compiler, I get the following linker errors when I Build my project: 1>main.obj : error LNK2019: unresolved external symbol LLVMInitializeX86TargetInfo referenced in function "bool __cdecl llvm::InitializeNativeTarget(void)" (?InitializeNativeTarget@llvm@@YA_NXZ) 1>main

I'm trying to 'make' using a pretty simple makefile. My makefile is named 'Makefile' so I'm simply using the command 'make'. I get this strange error: make: *** No rule to make target `/Makefile', needed by `Makefile'. Stop. If, however, I use make -f "full-path-to-makefile" it actually does run (with odd consequences...). I should say that I'm running all this from the directory where the Makefile lies, of course. I'm working on Mac OSX, using tcsh. Edit: I'm working in the LLVM framework, trying to compile a pass function and this is the associated makefile: LEVEL = ../../../ LIBRARYNAME =

I want to add debug metadata to my generated llvm IR, which is created via the C API. However, I can't figure out how to create named metadata nodes (such as !llvm.dbg.cu), or even how to create metadata nodes with unique numbers (ie. !0, !1, etc.). Adding metadata operands to instructions looks pretty simple, but I cannot figure out how to create standalone metadata nodes. As at LLVM 3.0, there is no function exposed in the C API for creating or modifying named metadata. A new function (LLVMAddNamedMetadataOperand) was recently added to the API , after the 3.0 release. If you're comfortable