Consider the following C code segment for i 0 i Solutionext

Consider the following C code segment: for (i = 0; i

Solution

.extern printf .extern scanf .global main .text main:   push {ip, lr}   @--read lines and columns of matrix A   ldr r0, =scanf2   ldr r1, =linesA   ldr r2, =columnsA   bl scanf   @--read all values of matrix A   ldr r4, =linesA   ldr r4, [r4]   ldr r5, =columnsA   ldr r5, [r5]   mul r6, r4, r5   ldr r7, =matrixA   loop1:     cmp r6, #0     ble endloop1     ldr r0, =scanf1     mov r1, r7     bl scanf     sub r6, r6, #1     add r7, r7, #4     b loop1   endloop1:   @--read lines and columns of matrix B   ldr r0, =scanf2   ldr r1, =linesB   ldr r2, =columnsB   bl scanf   @--check if matrices are compatible   ldr r6, = linesB   ldr r6, [r6]   ldr r7, = columnsB   ldr r7, [r7]   cmp r5, r6   bne abort      @--read all values of matrix B   ldr r4, =linesB   ldr r4, [r4]   ldr r5, =columnsB   ldr r5, [r5]   mul r6, r4, r5   ldr r7, =matrixB   loop2:     cmp r6, #0     ble endloop2     ldr r0, =scanf1     mov r1, r7     bl scanf     sub r6, r6, #1     add r7, r7, #4     b loop2   endloop2:        @--load all the necessary numbers on registers r4-r9   ldr r4, =matrixA   ldr r5, =linesA   ldr r5, [r5]   ldr r6, =columnsA   ldr r6, [r6]   ldr r7, =matrixB   ldr r8, =linesB   ldr r8, [r8]   ldr r9, =columnsB   ldr r9, [r9]   @--perform calculations and output result   mov r0, #0   forLinesA:     cmp r0, r5     bge endForLinesA     mov r1, #0     forColumnsB:       cmp r1, r9       bge endForColumnsB       mov r2, #0       mov r3, #0       multiply:         mov r12, #4         cmp r3, r6         bge endMultiply         @--load first element, from matrixA         mul r10, r0, r6         add r10, r10, r3         mul r11, r10, r12         add r11, r11, r4         ldr r10, [r11]         @--load second elements, from matrixB         mul r11, r9, r3         add r11, r11, r1         push {r0}         mul r0, r11, r12         add r0, r0, r7         ldr r11, [r0]         pop {r0}         @--multiply and add to result variable         mul r12, r10, r11         add r2, r2, r12         @--loop         add r3, r3, #1         b multiply       endMultiply:       @--printf result       push {r0-r12}       ldr r0, =printfResult       mov r1, r2       bl printf       pop {r0-r12}       @--if necessary print white space       sub r10, r9, #1       cmp r1, r10       bge endif       push {r0-r12}       ldr r0, =printfSpace       bl printf       pop {r0-r12}       endif:       @--loop       add r1, r1, #1       b forColumnsB     endForColumnsB:     @--loop     sub r10, r5, #1     cmp r0, r10     bge endif2     push {r0-r12}     ldr r0, =printfNewline     bl printf     pop {r0-r12}     endif2:     add r0, r0, #1     b forLinesA   endForLinesA:            b end   @--abort, imcompatible matrices   abort:   ldr r0, =printfError   bl printf   @--normal end of program   end:   mov r0, #0   pop {ip, pc}    .data   linesA: .word 0   columnsA: .word 0   linesB: .word 0   columnsB: .word 0   matrixA: .space 400   matrixB: .space 400     scanf1: .asciz \"%d\"   scanf2: .asciz \"%d %d\"   printfError: .asciz \"Matrizes Incompativeis.n\"   printfResult: .asciz \"%05d\"   printfSpace: .asciz \" \"   printfNewline: .asciz \"n\"   debug: .asciz \"elemento = %dn\"   debug2: .asciz \"offset = %dn\"