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-rw-r--r--covoar/GcovData.cc508
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diff --git a/covoar/GcovData.cc b/covoar/GcovData.cc
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--- a/covoar/GcovData.cc
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-/*
- * TODO: use strings instead of cstrings for reliability and saving memory
- * TODO: use global buffers
- *
- */
-
-/*! @file GcovData.cc
- * @brief GcovData Implementation
- *
- * This file contains the implementation of the functions supporting
- * reading *.gcno and writing *.gcda files for gcov support
- */
-
-#include <libgen.h>
-#include <stdio.h>
-#include <string.h>
-#include <stdlib.h>
-//#include <sys/stat.h>
-
-//#include "app_common.h"
-#include "GcovData.h"
-//#include "ExecutableInfo.h"
-//#include "CoverageMap.h"
-//#include "qemu-traces.h"
-
-
-namespace Gcov {
-
- GcovData::GcovData()
- {
- numberOfFunctions = 0;
- }
-
- GcovData::~GcovData()
- {
- }
-
- bool GcovData::readGcnoFile( const char* const fileName )
- {
- int status;
- FILE* gcovFile;
- char* tempString;
- char* tempString2;
- char* tempString3;
-
- if ( strlen(fileName) >= FILE_NAME_LENGTH ){
- fprintf(
- stderr,
- "ERROR: File name is too long to be correctly stored: %u\n",
- (unsigned int) strlen(fileName)
- );
- return false;
- }
- strcpy( gcnoFileName, fileName );
- strcpy( gcdaFileName, fileName );
- strcpy( textFileName, fileName );
- strcpy( cFileName, fileName );
- tempString = strstr( gcdaFileName,".gcno" );
- tempString2 = strstr( textFileName,".gcno" );
- tempString3 = strstr( cFileName,".gcno" );
-
- if ( (tempString == NULL) && (tempString2 == NULL) ){
- fprintf(stderr, "ERROR: incorrect name of *.gcno file\n");
- }
- else
- {
- strcpy( tempString, ".gcda"); // construct gcda file name
- strcpy( tempString2, ".txt"); // construct report file name
- strcpy( tempString3, ".c"); // construct source file name
- }
-
- // Debug message
- // fprintf( stderr, "Readning file: %s\n", gcnoFileName);
-
- // Open the notes file.
- gcovFile = fopen( gcnoFileName, "r" );
- if ( !gcovFile ) {
- fprintf( stderr, "Unable to open %s\n", gcnoFileName );
- return false;
- }
-
- // Read and validate the gcnoPreamble (magic, version, timestamp) from the file
- status = readFilePreamble( &gcnoPreamble, gcovFile, GCNO_MAGIC );
- if ( status <= 0 ){
- fprintf( stderr, "Unable to read %s\n", gcnoFileName );
- fclose( gcovFile );
- return false;
- }
-
- //Read all remaining frames from file
- while( readFrame(gcovFile) ){}
-
- fclose( gcovFile );
- return true;
- }
-
-
- bool GcovData::writeGcdaFile ()
- {
- gcov_preamble preamble;
- gcov_frame_header header;
- FILE* gcdaFile;
- functions_iterator_t currentFunction;
- arcs_iterator_t currentArc;
- uint32_t buffer;
- uint32_t countersFound;
- uint32_t countersFoundSum;
- uint64_t countersSum;
- uint64_t countersMax;
- uint64_t llBuffer[4096]; // TODO: Use common buffer
- gcov_statistics objectStats;
- gcov_statistics programStats;
- size_t status;
-
- // Debug message
- // fprintf( stderr, "Writing file: %s\n", gcdaFileName);
-
- // Lets clear counters sumators
- countersSum = 0;
- countersMax = 0;
- countersFoundSum = 0;
-
- // Open the data file.
- gcdaFile = fopen( gcdaFileName, "w" );
- if ( !gcdaFile ) {
- fprintf( stderr, "Unable to create %s\n", gcdaFileName );
- return false;
- }
-
- //Form preamble
- preamble.magic = GCDA_MAGIC;
- preamble.version = gcnoPreamble.version;
- preamble.timestamp = gcnoPreamble.timestamp;
-
- //Write preamble
- status = fwrite (&preamble , sizeof( preamble ), 1 , gcdaFile );
- if ( status != 1 )
- fprintf( stderr, "Error while writing gcda preamble to a file %s\n", gcdaFileName );
-
- //Write function info and counter counts
- for (
- currentFunction = functions.begin();
- currentFunction != functions.end();
- currentFunction++
- )
- {
- //Write function announcement frame header (length always equals 2)
- header.tag = GCOV_TAG_FUNCTION;
- header.length = 2;
- status = fwrite (&header, sizeof(header), 1, gcdaFile );
- if ( status != 1 )
- fprintf( stderr, "Error while writing function announcement to a file %s\n", gcdaFileName );
-
- //Write function id
- buffer = (*currentFunction)->getId();
- status = fwrite (&buffer, sizeof( buffer ), 1, gcdaFile );
- if ( status != 1 )
- fprintf( stderr, "Error while writing function id to a file %s\n", gcdaFileName );
-
- //Write function checksum
- buffer = (*currentFunction)->getChecksum();
- status = fwrite (&buffer, sizeof( buffer ), 1, gcdaFile );
- if ( status != 1 )
- fprintf( stderr, "Error while writing function checksum to a file %s\n", gcdaFileName );
-
- // Determine how many counters there are
- // and store their counts in buffer
- countersFound = 0;
- (*currentFunction)->getCounters( llBuffer, countersFound, countersSum, countersMax );
- countersFoundSum += countersFound;
-
- //Write info about counters
- header.tag = GCOV_TAG_COUNTER;
- header.length = countersFound * 2;
- status = fwrite (&header, sizeof( header ), 1, gcdaFile );
- if ( status != 1 )
- fprintf( stderr, "Error while writing counter header to a file %s\n", gcdaFileName );
-
- status = fwrite (llBuffer, sizeof( uint64_t ), countersFound , gcdaFile );
- if ( status != countersFound )
- fprintf( stderr, "Error while writing counter data to a file %s\n", gcdaFileName );
- }
-
- // Prepare frame with object file statistics
- header.tag = GCOV_TAG_OBJECT_SUMMARY;
- header.length = 9;
- objectStats.checksum = 0; // TODO: have no idea hov to calculates it :)
- objectStats.counters = countersFoundSum;
- objectStats.runs = 1; // We are lying for now, we have no means of figuring this out
- objectStats.sum = countersSum; // Sum of all counters
- objectStats.max = countersMax; // max value for counter on last run, we have no clue
- objectStats.sumMax = countersMax; // we have no clue
-
- // Write data
- status = fwrite (&header, sizeof( header ), 1, gcdaFile );
- if ( status != 1 )
- fprintf( stderr, "Error while writing stats header to a file %s\n", gcdaFileName );
- status = fwrite (&objectStats, sizeof( objectStats ), 1, gcdaFile );
- if ( status != 1 )
- fprintf( stderr, "Error while writing object stats to a file %s\n", gcdaFileName );
-
-
- // Prepare frame with program statistics
- header.tag = GCOV_TAG_PROGRAM_SUMMARY;
- header.length = 9;
- programStats.checksum = 0; // TODO: have no idea hov to calculate it :)
- programStats.counters = countersFoundSum;
- programStats.runs = 1; // We are lying for now, we have no clue
- programStats.sum = countersSum; // Sum of all counters
- programStats.max = countersMax; // max value for counter on last run, we have no clue
- programStats.sumMax = countersMax; // we have no clue
-
- // Write data
- status = fwrite (&header, sizeof( header ), 1, gcdaFile );
- if ( status != 1 )
- fprintf( stderr, "Error while writing stats header to a file %s\n", gcdaFileName );
- status = fwrite (&programStats, sizeof( programStats ), 1, gcdaFile );
- if ( status != 1 )
- fprintf( stderr, "Error while writing program stats to a file %s\n", gcdaFileName );
-
- fclose( gcdaFile );
-
- return true;
- }
-
- bool GcovData::readFrame(
- FILE* gcovFile
- )
- {
- gcov_frame_header header;
- char buffer[512];
- uint32_t intBuffer[4096];
- uint32_t tempBlockId;
- blocks_iterator_t tempBlockIterator;
- int status;
- GcovFunctionData* newFunction;
-
- status = readFrameHeader( &header, gcovFile);
-
- if ( status <= 0 ){
- // Not printing error message because this
- // happenns at the end of each file
- return false;
- }
-
- switch (header.tag){
-
- case GCOV_TAG_FUNCTION:
-
- numberOfFunctions++;
- newFunction = new GcovFunctionData;
- if ( !readFunctionFrame(header, gcovFile, newFunction) ){
- fprintf( stderr, "Error while reading FUNCTION from gcov file...\n" );
- return false;
- }
- functions.push_back(newFunction);
- break;
-
- case GCOV_TAG_BLOCKS:
-
- status = fread( &intBuffer, 4, header.length, gcovFile );
- if ( status != (int) header.length){
- fprintf(
- stderr, "Error while reading BLOCKS from gcov file...\n"
- "Header lenght is %u instead of %u\n",
- header.length,
- status
- );
- return false;
- }
-
- for( uint32_t i = 0; i < header.length; i++ )
- functions.back()->addBlock(i, intBuffer[i], "");
-
- break;
-
- case GCOV_TAG_ARCS:
-
- status = fread( &intBuffer, 4, header.length, gcovFile );
- if (status != (int) header.length){
- return false;
- }
-
- for ( int i = 1; i < (int) header.length; i += 2 )
- functions.back()->addArc(intBuffer[0], intBuffer[i], intBuffer[i+1]);
-
- break;
-
- case GCOV_TAG_LINES:
-
- status = fread( &intBuffer, 4, 2, gcovFile );
- if (status != 2 || intBuffer[1] != 0){
- fprintf(
- stderr,
- "Error while reading block id for LINES from gcov file..."
- );
- return false;
- }
- tempBlockId = intBuffer[0];
- header.length -= 2;
-
- // Find the right block
- tempBlockIterator =functions.back()->findBlockById(tempBlockId);
-
- header.length -= readString(buffer, gcovFile);
- functions.back()->setBlockFileName( tempBlockIterator, buffer );
-
- status = fread( &intBuffer, 4, header.length, gcovFile );
- if (status != (int) header.length){
- fprintf( stderr, "Error while reading LINES from gcov file..." );
- return false;
- }
-
- else
- for (int i = 0; i < (int) (header.length - 2); i++)
- functions.back()->addBlockLine( tempBlockIterator, intBuffer[i] );
-
- break;
-
- default:
-
- fprintf( stderr, "\n\nERROR - encountered unknown *.gcno tag : 0x%x\n", header.tag );
- break;
- }
-
- return true;
- }
-
- int GcovData::readString(
- char* buffer, //TODO: use global buffer here
- FILE* gcovFile
- )
- {
- int status;
- int length;
-
- status = fread( &length, sizeof(int), 1, gcovFile );
- if (status != 1){
- fprintf( stderr, "ERROR: Unable to read string length from gcov file\n" );
- return -1;
- }
-
- status = fread( buffer, length * 4 , 1, gcovFile );
- if (status != 1){
- fprintf( stderr, "ERROR: Unable to read string from gcov file\n" );
- return -1;
- }
-
- buffer[length * 4] = '\0';
-
- return length +1;
- }
-
- int GcovData::readFrameHeader(
- gcov_frame_header* header,
- FILE* gcovFile
- )
- {
- int status;
- int length;
-
- length = sizeof(gcov_frame_header);
- status = fread( header, length, 1, gcovFile );
- if (status != 1){
- //fprintf( stderr, "ERROR: Unable to read frame header from gcov file\n" );
- return -1;
- }
-
- return length / 4;
- }
-
- int GcovData::readFilePreamble(
- gcov_preamble* preamble,
- FILE* gcovFile,
- uint32_t desiredMagic
- )
- {
- int status;
- int length;
-
- length = sizeof( gcov_preamble );
- status = fread( preamble, sizeof( gcov_preamble), 1, gcovFile );
- if (status <= 0) {
- fprintf( stderr, "Error while reading file preamble\n" );
- return -1;
- }
-
- if ( preamble->magic != GCNO_MAGIC ) {
- fprintf( stderr, "File is not a valid *.gcno output (magic: 0x%4x)\n", preamble->magic );
- return -1;
- }
-
- return length / 4;
- }
-
- bool GcovData::readFunctionFrame(
- gcov_frame_header header,
- FILE* gcovFile,
- GcovFunctionData* function
- )
- {
- char buffer[512]; //TODO: use common buffers
- uint32_t intBuffer[4096];
- int status;
-
- status = fread( &intBuffer, 8, 1, gcovFile );
- if (status != 1){
- fprintf( stderr, "ERROR: Unable to read Function ID & checksum\n" );
- return false;
- }
- header.length -= 2;
- function->setId( intBuffer[0] );
- function->setChecksum( intBuffer[1] );
-
- header.length -= readString( buffer, gcovFile );
- function->setFunctionName( buffer );
- header.length -= readString( buffer, gcovFile );
- function->setFileName( buffer );
- status = fread( &intBuffer, 4, header.length, gcovFile );
- if (status <= 0){
- fprintf( stderr, "ERROR: Unable to read Function starting line number\n" );
- return false;
- }
- function->setFirstLineNumber( intBuffer[0] );
-
- return true;
- }
-
- bool GcovData::writeReportFile()
- {
- functions_iterator_t currentFunction;
- uint32_t i = 1; //iterator
- FILE* textFile;
-
- // Debug message
- // fprintf( stderr, "Writing file: %s\n", textFileName);
-
- // Open the data file.
- textFile = fopen( textFileName, "w" );
- if ( !textFile ) {
- fprintf( stderr, "Unable to create %s\n", textFileName );
- return false;
- }
-
- printGcnoFileInfo( textFile );
-
- for (
- currentFunction = functions.begin();
- currentFunction != functions.end();
- currentFunction++
- )
- {
- (*currentFunction)->printFunctionInfo( textFile, i );
- (*currentFunction)->printCoverageInfo( textFile, i );
- i++;
- }
-
- fclose ( textFile );
- return true;
- }
-
- void GcovData::printGcnoFileInfo( FILE * textFile )
- {
- fprintf(
- textFile,
- "\nFILE:\t\t\t%s\n"
- "magic:\t\t\t%x\n"
- "version:\t\t%x\n"
- "timestamp:\t\t%x\n"
- "functions found: \t%u\n\n",
- gcnoFileName,
- gcnoPreamble.magic,
- gcnoPreamble.version,
- gcnoPreamble.timestamp,
- numberOfFunctions
- );
- }
-
- void GcovData::writeGcovFile( )
- {
- char path[512];
- char command[512];
-
- //fprintf (stderr, "Attempting to run gcov for: %s\n", cFileName );
- strcpy( path, cFileName );
- dirname( path );
- sprintf( command, "( cd %s && gcov %s &>> gcov.log)", path, basename( cFileName ) );
- //fprintf (stderr, "> %s\n", command );
- system( command );
- }
-
- bool GcovData::processCounters( )
- {
- functions_iterator_t currentFunction;
- bool status = true;
- for (
- currentFunction = functions.begin();
- currentFunction != functions.end();
- currentFunction++
- )
- {
- if ( !(*currentFunction)->processFunctionCounters( ) )
- status = false;
- }
-
- return status;
- }
-}
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