/*! @file CoverageReaderTSIM.cc
 *  @brief CoverageReaderTSIM Implementation
 *
 *  This file contains the implementation of the CoverageReader class
 *  for the coverage files written by the SPARC simulator TSIM.
 */

#include <stdio.h>
#include <stdlib.h>
#include <sys/stat.h>

#include <iostream>
#include <iomanip>

#include <rld.h>

#include "app_common.h"
#include "CoverageReaderTSIM.h"
#include "CoverageMap.h"
#include "ExecutableInfo.h"

namespace Coverage {

  CoverageReaderTSIM::CoverageReaderTSIM()
  {

  }

  CoverageReaderTSIM::~CoverageReaderTSIM()
  {
  }

  void CoverageReaderTSIM::processFile(
    const char* const     file,
    ExecutableInfo* const executableInformation
  )
  {
    CoverageMapBase* aCoverageMap = NULL;
    int              baseAddress;
    int              cover;
    FILE*            coverageFile;
    int              i;
    int              status;

    //
    // Open the coverage file.
    //
    coverageFile = ::fopen( file, "r" );
    if (!coverageFile) {
      std::ostringstream what;
      what << "Unable to open " << file;
      throw rld::error( what, "CoverageReaderTSIM::processFile" );
    }

    //
    // Read and process each line of the coverage file.
    //
    while ( true ) {
      status = ::fscanf( coverageFile, "%x : ", &baseAddress );
      if (status == EOF || status == 0) {
        break;
      }

      for (i = 0; i < 0x80; i += 4) {
        unsigned int a;
        status = ::fscanf( coverageFile, "%x", &cover );
	if (status == EOF || status == 0) {
          std::cerr << "CoverageReaderTSIM: WARNING! Short line in "
                    << file
                    << " at address 0x"
                    << std::hex << std::setfill('0')
                    << baseAddress
                    << std::setfill(' ') << std::dec
                    << std::endl;
          break;
	}

        //
        // Obtain the coverage map containing the address and
        // mark the address as executed.
        //
	a = baseAddress + i;
	aCoverageMap = executableInformation->getCoverageMap( a );
        if ( !aCoverageMap )
          continue;
        if ( cover & 0x01 ) {
          aCoverageMap->setWasExecuted( a );
          aCoverageMap->setWasExecuted( a + 1 );
          aCoverageMap->setWasExecuted( a + 2 );
          aCoverageMap->setWasExecuted( a + 3 );
          if ( cover & 0x08 ) {
	    aCoverageMap->setWasTaken( a );
	    BranchInfoAvailable = true;
          }
          if ( cover & 0x10 ) {
	    aCoverageMap->setWasNotTaken( a );
	    BranchInfoAvailable = true;
          }
        }
      }
    }

    ::fclose( coverageFile );
  }
}