.text
foo:
push {ip, lr}
    cmp r0, r1
    bgt k @r1>r0
     mov r2, r0
     mov r0, r1
     mov r1, r2
    k:
    mov r4, r0
    mov r5, r1
    mov r0, r4
    ldr r1, =t1
    bl decode

    ldr r0, =t1
    bl printDecoded

    mov r0, r5
    ldr r1, =t2
    bl decode
    ldr r0, =t2
    bl printDecoded

    ldr r8, =t1
    ldr r9, =t2
    ldr r10, =t3
    mov r11, #0

     mov r0, r4
     mov r1, r5
     lsr r0, #31
     lsr r1, #31
     cmp r0,r1
     beq dodawaj
    mov r11,#1

     mov r2, #0x7fffffff
     and r0, r4, r2
     and r1, r5, r2
     cmp r0, r1
     bgt dodawaj
     mov r7, r8
     mov r8, r9
     mov r9, r7

    dodawaj:
    mov r0, #0
    mov r1, #0
    ldrsb r0, [r8, #1]
    ldrsb r1, [r9, #1]
    sub r3, r0, r1
    ldrb r0, [r9, #2]
    ldrb r1, [r9, #3]
    ldrb r2, [r9, #4]
    cmp r3, #0
    beq cLoopEnd
    cLoop:
     lsr r2, #1
     lsrs r1, #1
     addcs r2, #0x80
     lsrs r0, #1
     addcs r1, #0x80
     subs r3, r3, #1
     cmp r3, #0
    bne cLoop
    cLoopEnd:
    ldr r4, [r8, #1]
    cmp r11, #0
    beq dodaj
    mov r3, #0
    ldrb r3, [r8, #4]
    add r2, r2, r3
    add r1, r2, lsr #8
    ldrb r3, [r8, #3]
    add r1, r1, r3
    add r0, r1, lsr #8
    ldrb r3, [r8, #2]
    add r0, r0, r3
    cmp r0, #0xff
    ldr r5, [r8, #0]
    ble zapisz
     mov r6, #0xff
     and r0, r0, r6
     and r1, r1, r6
     and r2, r2, r6
     add r4, #1
     mov r3, #0
     lsr r2, #1
     and r3, r1, #1
     add r2, r2, r3
     lsr r1, #1
     and r3, r0, #1
     add r1, r1, r3
     lsr r0, #1
    b zapisz


    b zapisz

       dodaj:
    mov r3, #0
    ldrb r3, [r8, #4]
    add r2, r2, r3
    add r1, r2, lsr #8
    ldrb r3, [r8, #3]
    add r1, r1, r3
    add r0, r1, lsr #8
    ldrb r3, [r8, #2]
    add r0, r0, r3
    cmp r0, #0xff
    ldr r5, [r8, #0]
    ble zapisz
     mov r6, #0xff
     and r0, r0, r6
     and r1, r1, r6
     and r2, r2, r6
     add r4, #1
     mov r3, #0
     lsr r2, #1
     and r3, r1, #1
     add r2, r2, r3
     lsr r1, #1
     and r3, r0, #1
     add r1, r1, r3
     lsr r0, #1
    b zapisz

    zapisz:
    strb r0, [r10, #2]
    strb r1, [r10, #3]
    strb r2, [r10, #4]
    strb r4, [r10, #1]
    strb r5, [r10, #0]
    ldr r0, =t3
    bl printDecoded
    ldr r0, =t3
    bl encode
    pop {ip,pc}
pop {ip,pc}
.data
t1: .byte 0,0,0,0,0,0
t2: .byte 0,0,0,0,0,0
t3: .byte 0,0,0,0,0,0