LineNoClip.asm

line
    stmfd sp!,{r0-r12,lr}
    mov r7,#1
    subs r5,r3,r1
    rsbmi r5,r5,#0
    rsbmi r7,r7,#0
    mov r8,#1
    subs r6,r4,r2
    rsbpl r6,r6,#0
    rsbmi r8,r8,#0
    add r9,r5,r6
    mov r10,#0
lineloop
    bl setPixel
    cmp r1,r3
    cmpeq r2,r4
    beq endlineloop
    add r10,r9,r9
    cmp r10,r6
    addge r9,r9,r6
    addge r1,r1,r7
    cmp r10,r5
    addle r9,r9,r5
    addle r2,r2,r8
    b lineloop
endlineloop
    ldmfd sp!,{r0-r12,pc}