Question

C code to MIPS Translate the following C command into MIPS assembly. Assume that the base address of arrays A is stored in register $s1. 시 I-A[2] + 7;

Answer 1

Answer

Assume that the base address of array A is stored in the register $s1.

Th given C command is

${\color{Red} A[1] = A[2] + 7;}$

The above instruction can be converted to MIPS assembly by using below three lines of code.

lw $t0, 8($s1)        #load the content of A[2] to $t0
add $t1, $t0, 7       #set $t1 to $t0 + 7
sw $t1, 4($s1)       #store content of $t1 to A[1]

Demo program with output

Edit Execute array.asm* 1 .data 2 A: .word 4, 5, 33, 72, 24 #data section #variable to store array of numbers 4text #code section 5 .globl main 6 main: #load the base address of arr in $s1 τ.hich is assumed In the question #load the content of A[2] to $to #set $t1 to $t0 + 7 #store content of sti to A[1] add $tl, $to, 7 12 13 lw $a0, 4($s1) syscall #load service number 1 to SVO for printing integer #load content of A[1] to 0 #issue a system call 16 Line: 14 Column: 33 Show Line Numbers Mars MessagesRun IIO 40 program is finished running (dropped off bottom) -- Clear