how to decode back trace addresses manually?

[Han]

Hi,

I am using  backtrace and backtrace_symbols to print back traces in a
C program. Sometimes it cannot print out the symbols and print only
the hex address from a library.  However it is a bit difficult for me
to re-compile the library with -rdynamic option.

My question is: can I manually decode the address given I have the
source code and object files?  Btw, I don't have to find out the line
number, but at least the function names.

thanks
Han