Answer

Create your assembly language source file. The Ex__6_expr_arm.s file contains the following example solution to this exercise:

.text
.global _start
_start:
    // Print the leading output string
    ldr     r1, =msg1
    mov     r2, #msg1_len
    bl      print_string
    // Compute [(129 – 66) * (445 + 136)] / 3
    mov     r0, #129
    sub     r0, r0, #66
    ldr     r1, =#445
    add     r1, r1, #136
    mul     r0, r1, r0
    mov     r1, #3
    udiv    r0, r0, r1
    // Print the upper byte of the result
    push    {r0}
    lsr     r0, r0, #8
    bl      print_byte
    // Print the lower byte of the result    
    pop     {r0}
    bl      print_byte
    
    // Print the trailng output string
    ldr     r1, =msg2
    mov     r2, #msg2_len
    bl      print_string
    
    // Exit the program with syscall 1, returning status 0
    mov     r0, #0
    mov     r7, #1
    svc     0
// Print a string; r1=string address, r2=string length
print_string:
    mov     r0...