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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 <cstring>
#include <cstdio>
#include <iostream>
#include <fstream>
#include <iomanip>
#include <rld-process.h>
#include "TraceWriterQEMU.h"
#include "ExecutableInfo.h"
#include "CoverageMap.h"
#include "qemu-traces.h"
namespace Trace {
TraceWriterQEMU::TraceWriterQEMU():
TraceWriterBase()
{
}
TraceWriterQEMU::~TraceWriterQEMU()
{
}
bool TraceWriterQEMU::writeFile(
const std::string& file,
Trace::TraceReaderBase* log,
bool verbose
)
{
struct trace_header header;
int status;
std::ofstream traceFile;
uint8_t taken;
uint8_t notTaken;
taken = targetInfo_m->qemuTakenBit();
notTaken = targetInfo_m->qemuNotTakenBit();
//
// Verify that the TraceList has a non-zero size.
//
if ( log->Trace.set.empty() ) {
std::cerr << "ERROR: Empty TraceList" << std::endl;
return false;
}
//
// Open the trace file.
//
traceFile.open( file );
if ( !traceFile.is_open() ) {
std::ostringstream what;
std::cerr << "Unable to open " << file << std::endl;
return false;
}
//
// Write the Header to the file
//
// The header.magic field is actually 12 bytes, but QEMU_TRACE_MAGIC is
// 13 bytes including the NULL.
memcpy( header.magic, QEMU_TRACE_MAGIC, sizeof(header.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 ??
header._pad = 0;
traceFile.write( (char *) &header, sizeof( trace_header ) );
if ( traceFile.fail() ) {
std::cerr << "Unable to write header to " << file << std::endl;
return false;
}
if ( verbose ) {
std::cerr << "magic = " << QEMU_TRACE_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.
//
for ( const auto& itr : log->Trace.set ) {
struct trace_entry32 entry;
entry._pad[0] = 0;
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;
}
traceFile.write( (char *) &entry, sizeof( entry ) );
if ( traceFile.fail() ) {
std::cerr << "Unable to write entry to " << file << std::endl;
return false;
}
}
return true;
}
}
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