What does the following assembly language script do?

[scripthelp]

!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

In unix..using sparc
What does ths assembly language script do? I am a beginnerr..and I have no clue plz help me understand this

[GNU-Fan]

You take a sheet of paper and draw a table on it.
On the rows you put the line numbers and the columns are the registers and variables.

Then you look up what every single line does to the registers and write in your table what the contents of the registers are after execution of each line.

When you reach the last line, you will understand what the program does.

[Rubberman]

This is sparc assembly language. Get the Sun/Sparc assembler documentation to find out what this does. You can probably download or access it from Sun's web site.