Write assembly language code segment for the following assignment statement. Ass

Question

Write assembly language code segment for the following assignment statement. Assume that the variables var1, var2, var3, and var4 are defined as SDWORD integers: var4 = (var1 * -5)/(-var2 % var3) Code instructions that implement the following pseudocode using conditional jump instructions. Do not use the .IF directive. Assume that variables are defined as SDWORD integers: if(val1 > val2 && val2 > eax) mov ebx, 1; else mov ebx, 2; What is the difference between JMP and CALL instructions? Assume 32-bit mode. For example what is the difference between using the following two instructions: JMP example CALL example Where, example is a label in the code segment. Assuming the following data definitions balance SWORD 10 DUP(?) max SWORD? len SWORD ? Write Assembly Language code fragment to implement the following C++ like statements: max = balance[0]; for(int I = 1; i

Explanation / Answer

1.Ans

.data
var1 BYTE 20h
var2 WORD 1000h
var3 DWORD ?
var4 BYTE 10, 20, 30, 40, 50

.data
VAR4 SDWORD ?
VAR1 SDWORD 26
VAR2 SDWORD 30
VAR3 SDWORD 40

.code;

MOV VAR1 -5

MOV RES VAR1

MOV var2 var3
MOV res1 var2
mov res1 res

2.

cmp var1 var2;
cmp val2 eax;
mov ebx,1;

jbe next ; quit if false
mov X,1 ; both are true
next:

iv) Ans

.data
txt1: .asciiz "Please enter apositive integer (negative integer to exit) : "
txt2: .asciiz " The maximum value is : "

.text
.globl main
main:
addi $s0, $zero, 0
loop:
la $a0, txt1
li $v0, 4
syscall
  
li $v0, 5
syscall
  
bltz $v0, average
add $s0, $v0, 0
add $t0, $t0, 1
add $t3, $t3, $s0
  
beq $t0, 1, first
blt $s0, $t1, min
bgt $s0, $t2, max
first:
add $t1, $s0, 0
add $t2, $s0, 0
j loop

j loop
max:
add $t2, $s0, 0
j loop

  
print:
la $a0, txt2
li $v0, 4
syscall
  

exit:
li $v0, 10
syscall

iii)Ans

section   .text
global _start ;must be declared for using gcc

_start:   ;tell linker entry point
mov ecx, [num1]
cmp ecx, [num2]
jg check_third_num
mov ecx, [num2]

   check_third_num:

cmp ecx, [num3]
jg _exit
mov ecx, [num3]

   _exit:

mov [largest], ecx
mov ecx,msg
mov edx, len
mov ebx,1   ;file descriptor (stdout)
mov eax,4   ;system call number (sys_write)
int 0x80   ;call kernel
  
mov ecx,largest
mov edx, 2
mov ebx,1   ;file descriptor (stdout)
mov eax,4   ;system call number (sys_write)
int 0x80   ;call kernel
  
mov eax, 1
int 80h

section   .data

msg db "The largest digit is: ", 0xA,0xD
len equ $- msg
num1 dd '47'
num2 dd '22'
num3 dd '31'

segment .bss
largest resb 2

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