What does this assembly lang script do?help?

[scripthelp0]

!BITPATTERN = 0xAB01CDFF
.global main
main:
save %sp, -96, %sp


set BITPATTERN, %l0

clr %l1 ! checkpoint 1


sll %l0, 24, %l2
add %l2, %l1, %l1 ! checkpoint 2

srl %l0, 8, %l2
sll %l2, 24, %l2
srl %l2, 8, %l2

add %l2, %l1, %l1 ! checkpoint 3


srl %l0, 16, %l2
sll %l2, 24, %l2
srl %l2, 16, %l2
add %l2, %l1, %l1 ! checkpoint 4


srl %l0, 24, %l2
add %l2, %l1, %l1 ! checkpoint 5

ret
restore