GDB/DDD Reference Sheet V1.0 (All commands work both in GDB ...

Examining codeprint/a $pc (print the program counter)print $sp (print the stack pointer)disas(display the function around the current line)DDD: (Have the Machine Code Window Displaying)To Turn Machine Code Window ON/OFF (SELECT => MACHINE CODE WINDOW)disas ADDR (display the function around the address)disas ADDR1 ADDR2 (display the function between the addresses)disas FUNCTION (displays the machine instructions for that function)EX. disas phase_1 (disassembles phase_1 function instructions)Examining dataprint $eaxp/x $eaxp/a $eaxp/d $eaxp/t $eaxp/c $eaxp 0x100p/x 555(print the contents of %eax)(print the contents of %eax as hex)(print the contents of %eax as an address)(print the contents of %eax as decimal)(print the contents of %eax as binary)(print the contents of %eax as a character)(print decimal repr. of hex value)(print hex repr. of decimal value)x ADDR (print the contents of ADDR in memory)x/NFU ADDR (print the contents at ADDR in memory:N = number of units to displayF = display format-Uses all the same ones as print (p) and hasthese additional ones:s = (print-out null-terminated string)i = (print out machine instructions)U = b (bytes), h (2 bytes), w (4 bytes))Autodisplaying informationdisplay $eax (print contents of %eax every time the program stops)display(print the auto-displayed items)delete display (stop displaying item NUM)DDD (THIS WILL REALLY HELP!!):Displaying in the DATA WINDOWNote: To Turn Data Window ON/OFF (SELECT => DATA WINDOW)graph display `(p or x Command)`Ex. graph display `x/a $ebp+8`Ex. graph display `x/s *(int*)($ebp+8)`(I casted value to a pointer and than dereferenced)Ex. graph display `x/8xb 0x08048e2c`` = Tick Mark (below the Escape Key)Useful information commandshelp infoinfo r (registers and their contents)DDD: Select Status => Registersinfo b (status of user-settable breakpoints)DDD: Select Source => Breakpointsinfo stack (backtrace of the stack)DDD: Select Status => Backtraceinfo address SYMBOL (use for looking up addresses of functions)info frame (information about the current stack frame)