Razčlenjevalnik izvršilne datoteke za pridobivanje informacij za razhroščevanje

DEBENJAK, MARKO (author), Puhan, Janez (mentor)

V pričujočem delu se ukvarjamo z razvojem razčlenjevalnika objektnih datotek formata ELF. Namen razčlenjevalnika je pridobiti informacije za razhroščevanje iz objektne datoteke. Zahtevani simboli so globalne spremenljivke, strukture in polja. V prvem delu dela predstavljamo objektno datoteko ELF in njene odseke iz katerih pridobivamo tovrstne informacije. Kasneje se podamo v opis algoritma, ki je razvit za direktno integracijo v že obstoječi program System Monitor za spremljanje vrednosti simbolov v realnem času. Zaradi te predpostavke, opisujemo tudi potrebne prilagoditve algoritma in problem pri integraciji.

• Language: Slovenian
• Keywords: Razčlenjevalnik, format ELF, format DWARF, razhroščevanje, realno časovno spremljanje
• Work type: Bachelor thesis/paper
• Organization: FE - Faculty of Electrical Engineering
• Year: 2017
• PID: 20.500.12556/RUL-94876
• Publication date in RUL: 08.09.2017

Secondary language

• Language: English
• Title: Parser of executable file for debug information extraction

Abstract

The thesis describe an ELF object parser. It parses out the ELF object sections with debugging information, i.e., global variables, structures and arrays. The ELF file format description is given in the introducing part of the thesis. The sections of our interest, that is the ones containing the debugging information, are pointed out. Procedures for extraction of the required symbols follow. The proposed algorithms were implemented and customized for integration into an existing software tool for real time symbol monitoring. The problems that occurred during the integration of the developed procedures are also discussed.

• Keywords: Parser, ELF format, DWARF format, debugging, real time monitoring