ELF32 for PPC

Hi, The elf format definition document did not say how the .line section is defined. Does anyone know where to get such information for PPC? I am trying to map a function symbol to the file where it is defined. I don't get any clue from the ELF document how this should be done. Can anybody here give some hints? I know that GNU BINUTILS does this, but I didn't get through the source code. Thanks. Jonas __________________________________ Celebrate Yahoo!'s 10th Birthday! Yahoo! Netrospective: 100 Moments of the Web http://birthday.yahoo.com/netrospective/