Question $1$: Consider the following ARM assembly code segment.

a$.$ Accurately comment each line of code

b$.$ Describe what parameters $\backslash (\backslash$mathrm$\{$r$0\}\backslash )$ and r $1($passed into the function$)$ are used for.

c$.$ What are each of the local variables $\backslash (\backslash$mathrm$\{$r$\}4-\backslash$mathrm$\{$r$\}8\backslash )$ used for?

d$.$ What is the purpose of this function?

e$.$ Explain in detail the specific purpose of $"$stmfd$"$ and "Idmfd" in this function.

$```$

$.$globl $\_$MyFunc

$.$text

MyFunc:

stmfd sp$!,\{$r$4,$ r$5,$ r$6,$ r$7,$ r$8,$ lr$\}$

cmp rl$,$ #l

ble end outer

sub r$5,$ r$1,$ #$1$

mov r$4,$ r$0$

mov r$6,$ #$0$

loop$\_$start:

ldr r$7,[$r$4],4$

ldr r$8,[$r$4]$

cmp r$7,$ r$8$

ble no$\_$go

mov r$6,$ #$1$

sub r$4,$ r$4,4$

swp r$8,$ r$8,[$r$4]$

str r$8,[$r$4,4]!$

no$\_$go:

subs r$5,$ r$5,$ #$1$

bne loop start

end$\_$inner:

cmp r$6,$ #$0$

beq end$\_$outer

mov r$6,$ #$0$

mov r$4,$ r$0$

sub r$5,$ r$1,$ #$1$

b loop start

end outer:

ldmfd sp$!,\{$r$4,$ r$5,$ r$6,$ r$7,$ r$8,$ pc$\}$

$```$