[Crash-utility] crash-bt-user-space

Hi, Is it possible to display the user stack trace of a process (Not kernel stack trace of a process) from kernel core dump using crash utility. #bt <pid> will display the kernel stack trace of the process pid. I know extension 'gcore' can generate an process coredump,then use gdb bt to print user stack trace Is there any command can more quickly display this in crash shell? Or if I want to develop a command for this, How should I do? To call embeded gdb function? --Regards jie ming