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I need to write a mips assembly program. I will be using mars assmebly language for this project to display N list of prime numbers. For this assignment, do not include 1 as prime number. Additonal information, the value of N is found by using .data as a word at memory location referred to by the label N. First read this value into register $s0. After finding the primes, write each to following memory locations starting at a location indicated by the label PRIMES. Lastly, display on the console the number N and the list of primes separated by commas. For example, if N = 5: 5 2,3,5,7,11
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Answered! Please comment every line of code. I need to write a mips assembly program. I will be using mars assmebly language for this project to display N list of…
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main: li $v0, 4 # print welcome message la $a0, welcome syscall la $a0, prompt # prompt for user input syscall #receive input li $v0, 5 syscall add $s1, $v0, $zero # $s1 = user input beq $s1, $zero, quit # if input == zero, quit #print 1st prime li $v0, 1 # print int addi $a0, $zero, 2 # argument = 2 syscall li $v0, 4 # print new line la $a0, line syscall addi $s2, $s2, 1 # $s2 = 1 (prime counter)
addi $a2, $zero, 2 # $a2 = 2
loop: addi $a2, $a2, 1 # argument++ #beq $s2, $s1, quit # if prime counter == input, quit jal test_prime beq $v1, $zero, loop # if test_prime returns false, repeat addi $s2, $s2, 1 # else $s2++ #print next prime li $v0, 1 # print int add $a0, $a2, $zero # argument = $a2
syscall li $v0, 4 # print new line la $a0, line syscall beq $s2, $s1, quit # if prime counter == input, quit j loop test_prime: add $t1, $a2, $zero # $t1 = argument addi $t2, $zero, 1 # $t2 = 1 loop2: addi $t2, $t2, 1 # $t2++ beq $t2, $t1, true # if $t2 == $t1, return div $t3, $t1, $t2 # $t3 = $t1 / $t2 mfhi $t4 # $t4 = remainder beq $t4, $zero, false j loop2 false: li $v1, 0 # $v1 = false jr $ra
true: li $v1, 1 # $v1 = true jr $ra quit: # program exit li $v0, 10 syscall .data welcome: .asciiz "Prime Numbers are n" prompt: .asciiz "How many prime numbers? " line: .asciiz "n"
