static std::vector<SgAsmFunction*>
loadFunctions(const std::vector<std::string> &specimen, P2::Engine &engine) {
    engine.reset();                                            // clear all but config properties
    engine.doingPostAnalysis(false);                           // not needed for this tool
    SgAsmBlock *gblock = engine.buildAst(specimen);            // parse, load, link, disassemble, partition, build AST
    return SageInterface::querySubTree<SgAsmFunction>(gblock); // return just the functions
}
示例#2
0
SgProject*
buildAst(int argc, char *argv[], Settings &settings) {
    using namespace Sawyer::CommandLine;
    P2::Engine engine;

    // Parse the commane-line
    Parser p = engine.commandLineParser("transcode to LLVM", "Convert an ELF/PE specimen to LLVM assembly for testing.");
    SwitchGroup tool("Tool-specific switches");
    tool.insert(Switch("llvm")
                .argument("version", anyParser(settings.llvmVersionString))
                .doc("Version number for LLVM.  The version number is a doublet or triplet of integers such as \"3.5\" or "
                     "\"3.5.0\" and indicates which dialect of assembly should be emitted. The LLVM assembly syntax, being "
                     "mostly an LLVM internal language, changes in incompatible ways between LLVM versions. This transcoder "
                     "supports only certain versions (e.g., 3.5.0 and 3.7.0 as of December 2015)."));

    std::vector<std::string> specimen = p.with(tool).parse(argc, argv).apply().unreachedArgs();
    if (specimen.empty()) {
        ::mlog[FATAL] <<"no binary specimen; see --help for usage\n";
        exit(1);
    }

    // Parse the LLVM version number specified on the command-line
    if (!settings.llvmVersionString.empty()) {
        const char *s = settings.llvmVersionString.c_str();
        char *rest = NULL;
        errno = 0;
        int a = strtol(s, &rest, 10), b = 0, c = 0;
        if ('.'==*rest && 0==errno) {
            b = strtol(rest+1, &rest, 10);
            if ('.'==*rest && 0==errno)
                c = strtol(rest+1, &rest, 10);
        }
        settings.llvmVersion = 1000000 * a + 1000 * b + c;
    }

    // Parse, load, disassemble, and partition the specimen.
    (void) engine.buildAst(specimen);
    SgProject *project = SageInterface::getProject();
    if (!project) {
        ::mlog[FATAL] <<"This tool only supports ELF/PE specimens.\n";
        exit(1);
    }
    
    return project;
}