Please provide me with a written solution to facilitate my learning please. Thank you so much!

$($a$)$ Suppose register r $2$ holds the address $0x40000000,$ and we execute the following

instruction.

STMIA $r2!,\{r4,r3,r0,lr\}$

Write the memory address that now holds the value which was in registers $r4,r3,$

r$0$ and lr respectively. What is the value of register r$2$ after the execution?

$(10$ Marks$)$

$($b$)$ For the following ARM instructions, write the corresponding equivalent THUMB

instructions.

$($i$)$ LDRB r$2,[$r$3],$ #$1$

$($ii$)$ LDMFD sp$!,\{$r$2-$r$4,$ r$15\}$

$($iii$)$ ADDS r$2,$ r$2,$ r$1,$ ASR#$4$

$($iv$)$ STRH r$3,[$r$4],$ # $-4$

$(8$ Marks$)$

$($c$)$ Functions and subroutines are written in C and Assembly respectively. They are

called upon one another and must follow the ARM Application Procedure Call

Standard $($AAPCS$).$ A function int $z($int $a,$ int $b,$ int $c,$ int $d,$ int $e,$ int f $)$ is written

in C$.$ How would this function be called from an assembly program?

$(7$ Marks$)$