The document provides an overview of the GNU Debugger (GDB). It lists common GDB commands for debugging programs like breakpoints, watching variables, backtracing functions, and examining runtime behavior. Additional debugger tools are also mentioned like gdbtui, Xcode, and Emacs plugins that build on GDB. The document ends with references to online resources for learning more about using GDB and debugging with it.

1. GNU Debugger

7. Debugger!

9. Debugger ?

11. bug

12. ?

13. !

14. bug
?

15. debug

16. ↑ ↑ ↓ ↓ ← → ← → BA

17. printf

19. RUNTIME
TRACING

20. DYNAMIC
ANALYSIS

21. •
•
•
•
•

22. Good
and
Evil

23. Good
and
Evil

24. White
and
Black

25. White -box
and
Black -box

26. Debug
Event

27. Breakpoints

28. soft
Breakpoint

29. hardware
Breakpoint

30. memory
Breakpoint

31. Memory violation

32. Memory violation
(segmentation faults)

33. Exceptions

35. GDB

36. ?

38. $ gcc test.c -o test.o
$ ./test.o

39. $ gcc -g test.c -o test.o
$ gdb test.o

40. file
run
start main break
Ctrl+c
list [line/function]
print [var]
next [times]
step [times]
until [line]
continue
finish function
jump [line]
info [command] (ex:info break)

41. Breakpoint
help breakpoints breakpoints
break [line] breakpoint
break [function]
info break breakpoints
delete [n] breakpoint ( )
clear [line] breakpoint ( )
enable [n] breakpoint ( )
enable once [n] breakpoint break
disable [n] breakpoint ( )
ignore [n] [cont] breakpoint ( ) (cont )
condition [n] [cond] cond break
break [line] [cond]
break 10 if n > 5
commands [n] break ,

42. watchpoint
watch [var] var break
rwatch [var] var break
awatch [var] var
info watch break watch point

43. display
step next
display [var] display
undisplay [n] n display
enable display n display
[n]
disable display n display
[n] display
info display table

44. function calls
backtrace function stack
up
down
frame [n] frame
return [var] return

47. • (gdb) help all
• (gdb) help
• Reference

49. gdbtui ccdebug Xcode
cgdb Glewn GDBtk/Insight
Xxgdb Emacs WDB
GVD DDD Dev-c
Nemiver KDb ........

50. gdbtui ccdebug Xcode
cgdb Glewn GDBtk/Insight
Xxgdb Emacs WDB
GVD DDD Dev-c
Nemiver KDb ........

51. gdbtui ccdebug Xcode
cgdb Glewn GDBtk/Insight
Xxgdb Emacs WDB
GVD DDD Dev-c
Nemiver KDb ........

56. GDB

57. Reference
• GNU
http://www.gnu.org/software/gdb/
• GNU Debugger (gdb) Part I
http://jserv.sayya.org/debugger/HappyGDB-PartI-2008-07-12.pdf
• debugger GNU GDB
http://cse.tw/981class/file/upe3.pdf
• Gray Hat Python
• http://www.cmlab.csie.ntu.edu.tw/~daniel/linux/gdb.html
• http://www.study-area.org/cyril/opentools/opentools/
x1253.html

58. Q&A