.syntax unified
    .cpu cortex-a7
    .thumb
    @ maze entry logger: record lr/sp to mailbox 0x08062200, return 0.
    .text
    .global maze_stub
maze_stub:
    movw r12, #:lower16:0x08062200
    movt r12, #:upper16:0x08062200
    str lr, [r12]
    str sp, [r12, #4]
    movs r0, #0
    bx lr