do_4_pixels r4, 16, 8
do_4_pixels r5, 0, 16
do_4_pixels r5, 16, 24
do_4_pixels r4, 16, 8
do_4_pixels r5, 0, 16
do_4_pixels r5, 16, 24
- subs r3, #1
- add r0, #2048
- add r1, #2048
+ subs r3, r3, #1
+ add r0, r0, #2048
+ add r1, r1, #2048
bgt 0b
ldmfd sp!, {r4-r8,pc}
bgt 0b
ldmfd sp!, {r4-r8,pc}