p - step

t - trace

pa - step to address

ta - trace to address

pc - step to next call

tc - trace to next call

tb - trace to next branch (只适用于内核调试)

pt - step to next return

tt - trace to next return

ph - step to next branch

th - trace to next branch

wt - trace and watch data

g - go

gh - go handled.(告诉系统已经处理异常)

gn - go not handled.(告诉系统没有处理异常)

gu - go up. (return to current function)