[cdt-dev] Unable to fetch getLineNumber/Addr2line object using ElfBinary

[Kamakshi Sridhar <itskamakshi@xxxxxxxxx>]

Hi All,

I am unable to fetch getLineNumber  of any symbol obtained using ELFBinayObject.java and ElfBinaryParser.java, I executed as following :

ElfBinaryObject elfBinaryObject = (ElfBinaryObject) elfParser.createBinaryObject(path);

ISymbol[] symbols = elfBinaryObject.getSymbols();

for(int i = 0; i< symbols.length ; i++){

System.out.println("Line : " + symbols[i].getLineNumber(<some offset value>) + "-- ");

}

it always returns -1.

I have checked the code  Symbol.java, there they internally returning the value as -1 only.

       //public void getElfBinaryObject

/*

* (non-Javadoc)

* 

* @see org.eclipse.cdt.core.IBinaryParser.ISymbol#getLineNumber(long)

*/

public int getLineNumber(long offset) {

return -1;

}

We can achieve the line number by modifying the above code as follows :

public int getLineNumber(long offset) {

int line = -1;

try {

Addr2line addr2line = (Addr2line) binaryObj.getAddressFactory();   // This doesn't work..... 

if (addr2line != null) {

line = addr2line.getLineNumber(addr.add(offset));

addr2line.dispose();

}

} catch (IOException e){

}

return line;

}

But for this we doesn't have any way to fetch Addr2Line using ElfBinaryObject.java or ELF.java or the property IAddressFactory.

Please tell how to achieve to find Addr2line object or getLineNumber , as we do in GNUElfBinaryObject.java.

I am working in Windows OS , using Java API's. Please tell me if any patch related to it is been released so far or any other solution for this.

Thanks & Regards,

Kamakshi