set disassemble-next-line on
b _start
target remote : 1234
c

b start_kernel
# b trap_vector
# b user_task4
# b user_task5
# b task_delay
# b idle_task

display/z $mscratch
display/z $mepc
display/z $mstatus
display/z $ra
display/z $sp
display/z $a0
display/z $a1
display/z $a2