Learn to Program with Assembly: Foundational Learning for New Programmers

© The Author(s), under exclusive license to APress Media, LLC, part of Springer Nature 2021

J. BartlettLearn to Program with Assemblyhttps://doi.org/10.1007/978-1-4842-7437-8_6

6. Working with Data in Memory

Jonathan Bartlett¹  

(1)

Tulsa, OK, USA

 

While registers store the values that the CPU is actively processing, most of a program’s data is in main memory, not in registers. In this chapter, we will learn the basics of how to access main memory in assembly language.

6.1 Adding Fixed-Length Data Sections to Programs

To begin with, we will look at adding fixed-length data sections to programs.

Data sections are marked in code with the command .section .data . This will allow you to add fixed-length data sections to your program. Within the data section, ...