palaniraja palaniraja

Comprehensive Guide to 32-Bit RISC-V Assembly Programming (RV32I)

This guide provides a thorough introduction to programming in 32-bit RISC-V assembly language, focusing on the RV32I base integer instruction set. It starts with content from this cheat sheet and expands it into a complete, structured reference. The guide is organized for easy navigation, with clear sections, tables for listings, explanations, examples, and notes. It draws from official specifications and tutorials to ensure accuracy and completeness. Beginners can follow sequentially, while experienced users can reference specific sections.

Key assumptions:

We use the GNU Assembler (GAS) syntax, common for RISC-V tools.
Examples assume a bare-metal or simple simulator environment (e.g., RARS, Spike, or QEMU).
RV32I is the base; extensions like M (multiply/divide) are noted but not required unless specified.
Code snippets are testable in simulators; error handling and overflows are ign

Assembly is wacky but cool!

Author: Varun Gandhi (@typesanitizer)

Panel 1

Compilers generate assembly in the penultimate stage of compilation.

The assembly is processed by an assembler, which generates machine code for subsequent processing by a linker.

	#!/bin/zsh
	# <bitbar.title>Volume Manager</bitbar.title>
	# <bitbar.version>250624</bitbar.version>
	# <bitbar.author>Matt Sephton</bitbar.author>
	# <bitbar.author.github>gingerbeardman</bitbar.author.github>
	# <bitbar.desc>Lists and manages mounted user volumes</bitbar.desc>
	# <bitbar.dependencies>zsh</bitbar.dependencies>
	# <bitbar.abouturl>https://gist.github.com/gingerbeardman/610f22180117ad20465d7c529cc5faa0</bitbar.abouturl>

	setopt EXTENDED_GLOB

	// 8 Channel PPM output from flysky fs-i6X tranmitter,
	// Ch1/2/3/4 - Default
	// SwA - Ch5
	// SwB - Ch6
	// SwC - Ch7
	// SwD - Ch8

	#define numChannels 8
	#define axisMin 0
	#define axisMax 32767 // Seems that this should be set to 127 for Android devices

	//
	// ContentView.swift
	// SwiftUIPlayground
	//
	// Created by BJ Homer on 4/26/21.
	//

	import SwiftUI

	%
	% manuscript.latex
	%
	% Copyright (c) 2022 Don Melton
	%
	% LaTeX template for Pandoc to create PDFs in standard manuscript format
	% with both short story and novel layouts.
	%
	% Version: 2022052301
	%

	import UIKit

	extension UITextField {
	/// Add a trailing placeholder label that tracks the text as it changes
	func addTrailingPlaceholder(_ placeholder: String) {
	let label = UILabel()
	label.text = placeholder
	label.alpha = 0.3
	label.isHidden = true
	let container = UIView()

	<!DOCTYPE html>
	<html lang="en">
	<head>
	<meta charset="UTF-8">
	<meta http-equiv="X-UA-Compatible" content="IE=edge">
	<meta name="viewport" content="width=device-width, initial-scale=1.0">
	<title>ASCII to Binary</title>
	<script src="https://cdn.jsdelivr.net/npm/vue@2.6.14"></script>
	<style>
	body {

	set deviceName to "Kevin’s iPhone"

	activateScreenKeepAwake()
	readyQuickTime()
	setVideoInput(deviceName)
	setAudioInput(deviceName)
	setVolume(1.0)
	setScreenSize("maximize")

	# ----- Functions -----

	//
	// Combine-CLLocationManagerDelegate.playground
	//
	// Created by Felix Mau on 30.07.20.
	// Copyright © 2020 Felix Mau. All rights reserved.
	//

	import PlaygroundSupport
	import Combine
	import CoreLocation