OLLVM调试

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//luoTst.c
#include <stdlib.h>
#include <stdio.h>
//int fun1(int a, int b) __attribute((__annotate__(("fla"))));
//int fun2(int a, int b) __attribute((__annotate__(("nofla"))));
//int main(int argc, char** argv) __attribute((__annotate__(("bcf"))));

int fun1(int a, int b){
  if(a + b > 10){
    return 10;
  }else{
    return 100;
  }
}

int fun2(int a, int b){
   if(a - b > 10){
    return 5;
  }else{
    return 50;
  }
}

int main(int argc, char** argv) {
  if(argc > 2){
    printf("hello world\n");
  }else{
    printf("hello ollvm\n");
  }
  printf("fun1:%d\n", fun1(argc, 6));
  printf("fun2:%d\n", fun2(argc, 8));
  return 0;
}

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①将llvm编译出的debug二进制文件添加到环境变量中
export PATH=/home/luohun/Desktop/llvm-project-9.0.1/build_debug/bin:$PATH

②用CLion打开上述移植的ollvm so工程,命令行添加如下命令
-Xclang -load -Xclang /home/luohun/Desktop/OLLVM/cmake-build-debug/ollvm/lib/Transforms/Obfuscation/LLVMObfuscation.so -mllvm -fla /home/luohun/Desktop/luo/luoTst.c -emit-llvm -S -o /home/luohun/Desktop/luo/luoTst_fla.ll

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-cc1 -triple x86_64-unknown-linux-gnu -emit-llvm -disable-free -main-file-name luoTst.c -mrelocation-model static -mthread-model posix -mdisable-fp-elim -fmath-errno -masm-verbose -mconstructor-aliases -munwind-tables -fuse-init-array -target-cpu x86-64 -dwarf-column-info -debugger-tuning=gdb -coverage-notes-file /home/luohun/Desktop/luo/luoTst_fla.gcno -resource-dir /home/luohun/Desktop/llvm-project-9.0.1/build_debug/lib/clang/9.0.1 -internal-isystem /usr/local/include -internal-isystem /home/luohun/Desktop/llvm-project-9.0.1/build_debug/lib/clang/9.0.1/include -internal-externc-isystem /usr/include/x86_64-linux-gnu -internal-externc-isystem /include -internal-externc-isystem /usr/include -fdebug-compilation-dir /home/luohun/Desktop/llvm-project-9.0.1/build_debug/bin -ferror-limit 19 -fmessage-length 0 -fobjc-runtime=gcc -fdiagnostics-show-option -fcolor-diagnostics -load /home/luohun/Desktop/OLLVM/cmake-build-debug/ollvm/lib/Transforms/Obfuscation/LLVMObfuscation.so -mllvm -fla -faddrsig -o /home/luohun/Desktop/luo/luoTst_fla.ll -x c /home/luohun/Desktop/luo/luoTst.c