How To Save A Value Into A Register In Mips

Assembly tin can be a tough linguistic communication to wrap one's head around. It's nitty, information technology's gritty, and can be tricky to debug. The Microprocessor without Interlocked Pipelined Stages (MIPS) compages is a simplified language that many universities apply as an introduction to assembly.

1 Store Word (SW)
two Load Word (LW)
3 Summary

While MIPS is considered a Reduced Instruction Set Computer (RISC) it can still be difficult to get familiarized with. 2 of the basic operations available to programmers are the Store Word (SW) and Load Discussion (LW) commands. These commands are used to retrieve (load) and save (store) values from specified memory locations.

Shop Discussion (SW)

mips store word illustration — In this MIPS sw case, the sw command copies a register value into a memory location

The MIPS SW control has the post-obit instruction signature: sw, $source, get-go($destination) where:

sw is the command;
$destination is the register in which to salve the value;
outset is the memory beginning;
$source is the base address.

This command instructs the CPU to accept whatsoever value is stored at memory location $source and re-create it to the retentiveness location at $destination.

TL;DR – sw gets a value from a register and puts into memory

Load Give-and-take (LW)

mips load word definition infographic — In this MIPS lw instance, the lw command is loading the value at memory location $sp into register $s0

The MIPS LW command has the post-obit signature: lw, $destination, showtime($source) where

lw is the command;
$destinationis the annals to which the value is to be stored;
offset is the memory offset;
$source is the base address from which information is retrieved.

This control instructs the CPU to take whatever value is held in the $source register and salve it into memory at the $destination address.

TL;DR – lw gets a value from memory and puts into a register

Summary

MIPS is a dandy linguistic communication to acquire the basics of assembly programming. The MIPS32 architecture helps betrayal a RISC ready of instructions in a reduced memory setting which helps simplify things further. Basically, one wrangles 32-bit memory addresses during debugging rather than 64-bit addresses.

The sw and lw commands in MIPS are essential to loading and saving values from registers and memory locations. Understanding the central actions of these commands tin help pave the way to basic operations such equally loading values into arrays, copying arrays, and preparing registers for procedure calls.