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/******************************************************************
*
* kdbgwin - Helper application for DrKonqi
*
* This file is part of the KDE project
*
* Copyright (C) 2010 Ilie Halip <lupuroshu@gmail.com>
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public
* License as published by the Free Software Foundation; either
* version 2.1 of the License, or (at your option) version 3, or any
* later version accepted by the membership of KDE e.V. (or its
* successor approved by the membership of KDE e.V.), which shall
* act as a proxy defined in Section 6 of version 3 of the license.
*
* This library is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public
* License along with this library. If not, see <http://www.gnu.org/licenses/>
*****************************************************************/
#include "mingw_generator.h"
#include <bfd.h>
#include <cxxabi.h>
MingwGenerator::MingwGenerator(const Process& process)
: AbstractBTGenerator(process), file(NULL), func(NULL), line(0)
{}
struct MyBFD
{
QString module;
bfd* abfd;
asymbol** syms;
MyBFD() : abfd(0), syms(0)
{}
MyBFD(const QString& module, bfd* abfd, asymbol** syms)
{ this->module = module; this->abfd = abfd; this->syms = syms; }
bool operator==(const MyBFD& other)
{ return module == other.module; }
};
typedef QList<MyBFD> TBFDList;
TBFDList bfds;
asection* text = NULL;
bool MingwGenerator::Init()
{
bfd_init();
return true;
}
void MingwGenerator::UnInit()
{
}
void MingwGenerator::FrameChanged()
{
QString modPath = GetModulePath();
bool existsSymbol = false;
TSymbolsMap::const_iterator i = m_symbolsMap.find(modPath);
if (i == m_symbolsMap.end())
{
return;
}
MyBFD dummy(modPath, NULL, NULL);
int pos = bfds.indexOf(dummy);
if (pos == -1)
{
return;
}
MyBFD bfd = bfds[pos];
text = bfd_get_section_by_name(bfd.abfd, ".text");
long offset = m_currentFrame.AddrPC.Offset - text->vma;
file = DEFAULT_FILE;
func = DEFAULT_FUNC;
line = DEFAULT_LINE;
if (offset > 0)
{
bfd_find_nearest_line(bfd.abfd, text, bfd.syms, offset, &file, &func, (unsigned int*) &line);
}
}
QString MingwGenerator::GetFunctionName()
{
if (func != NULL)
{
char* realname = abi::__cxa_demangle(func, NULL, NULL, NULL);
if (realname != NULL)
{
QString strReturn = QString::fromLatin1(realname);
free(realname);
return strReturn;
}
else
{
return QString::fromLatin1(func);
}
}
return QString::fromLatin1(DEFAULT_FUNC);
}
QString MingwGenerator::GetFile()
{
if (file != NULL)
{
return QString::fromLatin1(file);
}
return QString::fromLatin1(DEFAULT_FILE);
}
int MingwGenerator::GetLine()
{
if (line > 0)
{
return line;
}
return -1;
}
void MingwGenerator::LoadSymbol(const QString& module, DWORD64 dwBaseAddr)
{
QString symbolFile = module;
symbolFile.truncate(symbolFile.length() - 4);
symbolFile.append(".sym");
m_symbolsMap[module] = false; // default
QString symbolType;
do
{
bfd* abfd = bfd_openr(symbolFile.toLatin1(), NULL);
if (abfd == NULL)
{
symbolType = QString::fromLatin1("no symbols loaded");
break;
}
bfd_check_format(abfd, bfd_object);
unsigned storage_needed = bfd_get_symtab_upper_bound(abfd);
assert(storage_needed > 4);
if (storage_needed <= 4)
{
// i don't know why the minimum value for this var is 4...
symbolType = QString::fromLatin1("no symbols loaded");
break;
}
asymbol** syms = (asymbol **) malloc(storage_needed);
assert(syms);
if (syms == NULL)
{
symbolType = QString::fromLatin1("no symbols loaded");
break;
}
symbolType = QString::fromLatin1("symbols loaded");
m_symbolsMap[module] = true;
bfds.push_back(MyBFD(module, abfd, syms));
}
while (0);
QString strOutput = QString::fromLatin1("Loaded %1 (%2)")
.arg(module).arg(symbolType);
emit DebugLine(strOutput);
}
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