>gdb ./sysprocess
(gdb)set args -id 0 -taskcfg ub900proc
(gdb)r //run
Starting program: ../sysprocess -id 0 -taskcfg ub900proc
..
Program received signal SIGSEGV, Segmentation fault.
(gdb)backtrace //打印當前的函數調用棧的所有信息。
(gdb)frame 7 //查看信息，n是一個從0開始的整數，是棧中的層編號
(gdb)up
(gdb)down
(gdb)quit