source: rtems-tools/tester/covoar/covoar.cc @ 0333442

#include <ctype.h>
#include <errno.h>
#include <fcntl.h>
#include <limits.h>
#include <signal.h>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <sys/types.h>
#include <sys/stat.h>
#include <unistd.h>

#include <list>

#include "app_common.h"
#include "CoverageFactory.h"
#include "CoverageMap.h"
#include "DesiredSymbols.h"
#include "ExecutableInfo.h"
#include "Explanations.h"
#include "ObjdumpProcessor.h"
#include "ReportsBase.h"
#include "TargetFactory.h"
#include "GcovData.h"

#include "rld-process.h"

#ifdef _WIN32
  #define kill(p,s) raise(s)
#endif

/*
 *  Variables to control general behavior
 */
const char*                          coverageFileExtension = NULL;
std::list<std::string>               coverageFileNames;
int                                  coverageExtensionLength = 0;
Coverage::CoverageFormats_t          coverageFormat;
Coverage::CoverageReaderBase*        coverageReader = NULL;
char*                                executable = NULL;
const char*                          executableExtension = NULL;
int                                  executableExtensionLength = 0;
std::list<Coverage::ExecutableInfo*> executablesToAnalyze;
const char*                          explanations = NULL;
char*                                progname;
const char*                          symbolsFile = NULL;
const char*                          gcnosFileName = NULL;
char                                 gcnoFileName[FILE_NAME_LENGTH];
char                                 gcdaFileName[FILE_NAME_LENGTH];
char                                 gcovBashCommand[256];
const char*                          target = NULL;
const char*                          format = NULL;
FILE*                                gcnosFile = NULL;
Gcov::GcovData*          gcovFile;

/*
 *  Print program usage message
 */
void usage()
{
  fprintf(
    stderr,
    "Usage: %s [-v] -T TARGET -f FORMAT [-E EXPLANATIONS] -1 EXECUTABLE coverage1 ... coverageN\n"
    "--OR--\n"
    "Usage: %s [-v] -T TARGET -f FORMAT [-E EXPLANATIONS] -e EXE_EXTENSION -c COVERAGEFILE_EXTENSION EXECUTABLE1 ... EXECUTABLE2\n"
    "\n"
    "  -v                        - verbose at initialization\n"
    "  -T TARGET                 - target name\n"
    "  -f FORMAT                 - coverage file format "
           "(RTEMS, QEMU, TSIM or Skyeye)\n"
    "  -E EXPLANATIONS           - name of file with explanations\n"
    "  -s SYMBOLS_FILE           - name of file with symbols of interest\n"
    "  -1 EXECUTABLE             - name of executable to get symbols from\n"
    "  -e EXE_EXTENSION          - extension of the executables to analyze\n"
    "  -c COVERAGEFILE_EXTENSION - extension of the coverage files to analyze\n"
    "  -g GCNOS_LIST             - name of file with list of *.gcno files\n"
    "  -p PROJECT_NAME           - name of the project\n"
    "  -C ConfigurationFileName  - name of configuration file\n"
    "  -O Output_Directory       - name of output directory (default=."
    "\n",
    progname,
    progname
  );
}

#define PrintableString(_s) \
((!(_s)) ? "NOT SET" : (_s))

static void
fatal_signal( int signum )
{
  signal( signum, SIG_DFL );

  rld::process::temporaries_clean_up();

  /*
   * Get the same signal again, this time not handled, so its normal effect
   * occurs.
   */
  kill( getpid(), signum );
}

static void
setup_signals( void )
{
  if ( signal( SIGINT, SIG_IGN ) != SIG_IGN )
    signal( SIGINT, fatal_signal );
#ifdef SIGHUP
  if ( signal( SIGHUP, SIG_IGN ) != SIG_IGN )
    signal( SIGHUP, fatal_signal );
#endif
  if ( signal( SIGTERM, SIG_IGN ) != SIG_IGN )
    signal( SIGTERM, fatal_signal );
#ifdef SIGPIPE
  if ( signal( SIGPIPE, SIG_IGN ) != SIG_IGN )
    signal( SIGPIPE, fatal_signal );
#endif
#ifdef SIGCHLD
  signal( SIGCHLD, SIG_DFL );
#endif
}

int main(
  int    argc,
  char** argv
)
{
  std::list<std::string>::iterator               citr;
  std::string                                    coverageFileName;
  std::list<Coverage::ExecutableInfo*>::iterator eitr;
  Coverage::ExecutableInfo*                      executableInfo = NULL;
  int                                            i;
  int                                            opt;
  const char*                                    singleExecutable = NULL;
  rld::process::tempfile                         objdumpFile( ".dmp" );
  rld::process::tempfile                         err( ".err" );
  bool                                           debug = false;
  std::string                                    option;

  setup_signals();

  //
  // Process command line options.
  //
  progname = argv[0];

  while ((opt = getopt(argc, argv, "1:L:e:c:g:E:f:s:T:O:p:v:d")) != -1) {
    switch (opt) {
      case '1': singleExecutable      = optarg; break;
      case 'L': dynamicLibrary        = optarg; break;
      case 'e': executableExtension   = optarg; break;
      case 'c': coverageFileExtension = optarg; break;
      case 'g': gcnosFileName         = optarg; break;
      case 'E': explanations          = optarg; break;
      case 'f': format                = optarg; break;
      case 's': symbolsFile           = optarg; break;
      case 'T': target                = optarg; break;
      case 'O': outputDirectory       = optarg; break;
      case 'v': Verbose               = true;   break;
      case 'p': projectName           = optarg; break;
      case 'd': debug                 = true;   break;
      default: /* '?' */
        usage();
        exit(EXIT_FAILURE);
    }
  }
  try
  {
    /*
     * Validate inputs.
     */

    /*
     * Target name must be set.
     */
    if ( !target ) {
      option = "target -T";
      throw option;
    }

    /*
     * Validate simulator format.
     */
    if ( !format ) {
      option = "format -f";
      throw option;
    }

    /*
     * Has path to explanations.txt been specified.
     */
    if ( !explanations ) {
      option = "explanations -E";
      throw option;
    }

    /*
     * Has coverage file extension been specified.
     */
    if ( !coverageFileExtension ) {
      option = "coverage extension -c";
      throw option;
    }

    /*
     * Has executable extension been specified.
     */
    if ( !executableExtension ) {
      option = "executable extension -e";
      throw option;
    }

    /*
     * Check for project name.
     */
    if ( !projectName ) {
      option = "project name -p";
      throw option;
    }
  }
  catch( std::string option )
  {
    std::cout << "error missing option: " + option << std::endl;
    usage();
    exit(EXIT_FAILURE);
  }

  // If a single executable was specified, process the remaining
  // arguments as coverage file names.
  if (singleExecutable) {

    // Ensure that the executable is readable.
    if (!FileIsReadable( singleExecutable )) {
      fprintf(
        stderr,
        "WARNING: Unable to read executable %s\n",
        singleExecutable
      );
    } else {

      for (i=optind; i < argc; i++) {
        // Ensure that the coverage file is readable.
        if (!FileIsReadable( argv[i] )) {
          fprintf(
            stderr,
            "WARNING: Unable to read coverage file %s\n",
            argv[i]
          );
        } else {
          coverageFileNames.push_back( argv[i] );
        }
      }

      // If there was at least one coverage file, create the
      // executable information.
      if (!coverageFileNames.empty()) {
        if (dynamicLibrary) {
          executableInfo = new Coverage::ExecutableInfo(
            singleExecutable, dynamicLibrary
          );
        } else {
          executableInfo = new Coverage::ExecutableInfo( singleExecutable );
        }

        executablesToAnalyze.push_back( executableInfo );
      }
    }
  }

  // If not invoked with a single executable, process the remaining
  // arguments as executables and derive the coverage file names.
  else {
    for (i = optind; i < argc; i++) {

      // Ensure that the executable is readable.
      if (!FileIsReadable( argv[i] )) {
        fprintf(
          stderr,
          "WARNING: Unable to read executable %s\n",
          argv[i]
        );
      } else {
        coverageFileName = argv[i];
        coverageFileName.replace(
          coverageFileName.length() - executableExtensionLength,
          executableExtensionLength,
          coverageFileExtension
        );

        if (!FileIsReadable( coverageFileName.c_str() )) {
          fprintf(
            stderr,
            "WARNING: Unable to read coverage file %s\n",
            coverageFileName.c_str()
          );
        } else {
          executableInfo = new Coverage::ExecutableInfo( argv[i] );
          executablesToAnalyze.push_back( executableInfo );
          coverageFileNames.push_back( coverageFileName );
        }
      }
    }
  }

  // Ensure that there is at least one executable to process.
  if (executablesToAnalyze.empty()) {
    fprintf(
      stderr, "ERROR: No information to analyze\n"
    );
    exit(EXIT_FAILURE);
  }

  if (Verbose) {
    if (singleExecutable) {
      fprintf(
        stderr,
        "Processing a single executable and multiple coverage files\n"
      );
    } else {
      fprintf(
        stderr,
        "Processing multiple executable/coverage file pairs\n"
      );
    }
    fprintf( stderr, "Coverage Format : %s\n", format );
    fprintf( stderr, "Target          : %s\n", PrintableString(target) );
    fprintf( stderr, "\n" );
#if 1
    // Process each executable/coverage file pair.
    eitr = executablesToAnalyze.begin();
    for (citr = coverageFileNames.begin();
         citr != coverageFileNames.end();
         citr++) {

      fprintf(
        stderr,
        "Coverage file %s for executable %s\n",
        (*citr).c_str(),
        ((*eitr)->getFileName()).c_str()
      );

      if (!singleExecutable)
        eitr++;
    }
#endif
  }

  //
  // Create data to support analysis.
  //

  // Create data based on target.
  TargetInfo = Target::TargetFactory( target );

  // Create the set of desired symbols.
  SymbolsToAnalyze = new Coverage::DesiredSymbols();
  SymbolsToAnalyze->load( symbolsFile );
  if (Verbose) {
    fprintf(
      stderr,
      "Analyzing %u symbols\n",
      (unsigned int) SymbolsToAnalyze->set.size()
    );
  }

  // Create explanations.
  AllExplanations = new Coverage::Explanations();
  if ( explanations )
    AllExplanations->load( explanations );

  // Create coverage map reader.
  coverageReader = Coverage::CreateCoverageReader(coverageFormat);
  if (!coverageReader) {
    fprintf( stderr, "ERROR: Unable to create coverage file reader\n" );
    exit(EXIT_FAILURE);
  }

  // Create the objdump processor.
  objdumpProcessor = new Coverage::ObjdumpProcessor();

  // Prepare each executable for analysis.
  for (eitr = executablesToAnalyze.begin();
       eitr != executablesToAnalyze.end();
       eitr++) {

    if (Verbose) {
      fprintf(
        stderr,
        "Extracting information from %s\n",
        ((*eitr)->getFileName()).c_str()
      );
    }

    // If a dynamic library was specified, determine the load address.
    if (dynamicLibrary) {
      (*eitr)->setLoadAddress(
        objdumpProcessor->determineLoadAddress( *eitr )
      );
    }

    // Load the objdump for the symbols in this executable.
    objdumpProcessor->load( *eitr, objdumpFile, err );
  }

  //
  // Analyze the coverage data.
  //

  // Process each executable/coverage file pair.
  eitr = executablesToAnalyze.begin();
  for (citr = coverageFileNames.begin();
       citr != coverageFileNames.end();
       citr++) {

    if (Verbose) {
      fprintf(
        stderr,
        "Processing coverage file %s for executable %s\n",
        (*citr).c_str(),
        ((*eitr)->getFileName()).c_str()
      );
    }

    // Process its coverage file.
    coverageReader->processFile( (*citr).c_str(), *eitr );

    // Merge each symbols coverage map into a unified coverage map.
    (*eitr)->mergeCoverage();

    // DEBUG Print ExecutableInfo content
    //(*eitr)->dumpExecutableInfo();

    if (!singleExecutable) {
      eitr++;
    }
  }

  // Do necessary preprocessing of uncovered ranges and branches
  if (Verbose) {
    fprintf( stderr, "Preprocess uncovered ranges and branches\n" );
  }
  SymbolsToAnalyze->preprocess();

  //
  // Generate Gcov reports
  //
  if (Verbose) {
    fprintf( stderr, "Generating Gcov reports...\n");
  }
  gcnosFile = fopen ( gcnosFileName , "r" );

  if ( !gcnosFile ) {
    fprintf( stderr, "Unable to open %s\n", gcnosFileName );
  }
  else {
    while ( fscanf( gcnosFile, "%s", inputBuffer ) != EOF) {
      gcovFile = new Gcov::GcovData();
      strcpy( gcnoFileName, inputBuffer );

      if ( Verbose ) {
        fprintf( stderr, "Processing file: %s\n", gcnoFileName );
      }

      if ( gcovFile->readGcnoFile( gcnoFileName ) ) {
        // Those need to be in this order
        gcovFile->processCounters();
        gcovFile->writeReportFile();
        gcovFile->writeGcdaFile();
        gcovFile->writeGcovFile();
      }

      delete gcovFile;
    }
    fclose( gcnosFile );
  }

  // Determine the uncovered ranges and branches.
  if (Verbose) {
    fprintf( stderr, "Computing uncovered ranges and branches\n" );
  }
  SymbolsToAnalyze->computeUncovered();

  // Calculate remainder of statistics.
  if (Verbose) {
    fprintf( stderr, "Calculate statistics\n" );
  }
  SymbolsToAnalyze->calculateStatistics();

  // Look up the source lines for any uncovered ranges and branches.
  if (Verbose) {
    fprintf(
      stderr, "Looking up source lines for uncovered ranges and branches\n"
    );
  }
  SymbolsToAnalyze->findSourceForUncovered();

  //
  // Report the coverage data.
  //
  if (Verbose) {
    fprintf(
      stderr, "Generate Reports\n"
    );
  }
  Coverage::GenerateReports();

  // Write explanations that were not found.
  if ( explanations ) {
    std::string notFound;

    notFound = outputDirectory;
    notFound += "/";
    notFound += "ExplanationsNotFound.txt";

    if (Verbose) {
      fprintf( stderr, "Writing Not Found Report (%s)\n", notFound.c_str() );
    }
    AllExplanations->writeNotFound( notFound.c_str() );
  }

  //Leave tempfiles around if debug flag (-d) is enabled.
  if ( debug ) {
    objdumpFile.override( "objdump_file" );
    objdumpFile.keep();
    err.override( "objdump_exec_log" );
    err.keep();
  }
  return 0;
}