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/*
* RTEMS Tools Project (http://www.rtems.org/)
* Copyright 2014 OAR Corporation
* All rights reserved.
*
* This file is part of the RTEMS Tools package in 'rtems-tools'.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions are met:
*
* 1. Redistributions of source code must retain the above copyright notice,
* this list of conditions and the following disclaimer.
*
* 2. Redistributions in binary form must reproduce the above copyright notice,
* this list of conditions and the following disclaimer in the documentation
* and/or other materials provided with the distribution.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
* AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
* ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE
* LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
* CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
* SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
* INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
* CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
* ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
* POSSIBILITY OF SUCH DAMAGE.
*/
/*! @file TraceWriterQEMU.cc
* @brief TraceWriterQEMU Implementation
*
* This file contains the implementation of the functions supporting
* reading the QEMU coverage data files.
*/
#include <stdio.h>
#include <stdlib.h>
#include <sys/stat.h>
#include <iostream>
#include <iomanip>
#include <rld-process.h>
#include "app_common.h"
#include "TraceWriterQEMU.h"
#include "ExecutableInfo.h"
#include "CoverageMap.h"
#include "qemu-traces.h"
#if HAVE_STAT64
#define STAT stat64
#else
#define STAT stat
#endif
#if HAVE_OPEN64
#define OPEN fopen64
#else
#define OPEN fopen
#endif
namespace Trace {
TraceWriterQEMU::TraceWriterQEMU():
TraceWriterBase()
{
}
TraceWriterQEMU::~TraceWriterQEMU()
{
}
bool TraceWriterQEMU::writeFile(
const char* const file,
Trace::TraceReaderBase *log
)
{
struct trace_header header;
int status;
FILE* traceFile;
uint8_t taken;
uint8_t notTaken;
taken = TargetInfo->qemuTakenBit();
notTaken = TargetInfo->qemuNotTakenBit();
//
// Verify that the TraceList has a non-zero size.
//
if ( log->Trace.set.begin() == log->Trace.set.end() ){
fprintf( stderr, "ERROR: Empty TraceList\n" );
return false;
}
//
// Open the trace file.
//
traceFile = ::OPEN( file, "w" );
if (!traceFile) {
std::ostringstream what;
std::cerr << "Unable to open " << file << std::endl;
return false;
}
//
// Write the Header to the file
//
sprintf( header.magic, "%s", QEMU_TRACE_MAGIC );
header.version = QEMU_TRACE_VERSION;
header.kind = QEMU_TRACE_KIND_RAW; // XXX ??
header.sizeof_target_pc = 32;
header.big_endian = false;
header.machine[0] = 0; // XXX ??
header.machine[1] = 0; // XXX ??
status = ::fwrite( &header, sizeof(trace_header), 1, traceFile );
if (status != 1) {
std::cerr << "Unable to write header to " << file << std::endl;
return false;
}
if (Verbose)
std::cerr << "magic = " << header.magic << std::endl
<< "version = " << header.version << std::endl
<< "kind = " << header.kind << std::endl
<< "sizeof_target_pc = " << header.sizeof_target_pc << std::endl
<< "big_endian = " << header.big_endian << std::endl
<< std::hex << std::setfill('0')
<< "machine = " << std::setw(2) << header.machine[0]
<< ':' << header.machine[1]
<< std::dec << std::setfill(' ')
<< std::endl;
//
// Loop through log and write each entry.
//
struct trace_entry32 entry;
TraceList::ranges_t::iterator itr;
for (itr = log->Trace.set.begin(); (itr != log->Trace.set.end()); itr++ ){
entry.pc = itr->lowAddress;
entry.size = itr-> length;
entry.op = TRACE_OP_BLOCK;
switch (itr->exitReason) {
case TraceList::EXIT_REASON_BRANCH_TAKEN:
entry.op |= taken;
break;
case TraceList::EXIT_REASON_BRANCH_NOT_TAKEN:
entry.op |= notTaken;
break;
case TraceList::EXIT_REASON_OTHER:
break;
default:
throw rld::error( "Unknown exit Reason", "TraceWriterQEMU::writeFile" );
break;
}
if ( Verbose )
std::cerr << std::hex << std::setfill('0')
<< entry.pc << ' ' << entry.size << ' ' << entry.op
<< std::dec << std::setfill(' ')
<< std::endl;
status = ::fwrite( &entry, sizeof(entry), 1, traceFile );
if (status != 1) {
std::cerr << "Unable to write entry to " << file << std::endl;
return false;
}
}
::fclose( traceFile );
return true;
}
}
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