O'Reilly logo

D Cookbook by Adam D. Ruppe

Stay ahead with the world's most comprehensive technology and business learning platform.

With Safari, you learn the way you learn best. Get unlimited access to videos, live online training, learning paths, books, tutorials, and more.

Start Free Trial

No credit card required

Adding interrupt handling to the bare metal x86 code

In the previous recipe, we displayed the "hello world" program on bare metal. Next, we'll add interrupt handling and enable keyboard support.

Getting ready

Get the code from the last recipe and ensure that it still compiles and runs. We will be adding to it here.

How to do it…

Execute the following steps to add interrupt handling to bare metal x86 code:

  1. Declare the constants and data structures needed to communicate with the hardware. The definitions can be translated from the hardware manuals.
  2. Write an empty interrupt handler with a naked inline assembly that does nothing except return with the iretd instruction.
  3. Write a keyboard interrupt handler with a naked inline assembly. We'll need to read the ...

With Safari, you learn the way you learn best. Get unlimited access to videos, live online training, learning paths, books, interactive tutorials, and more.

Start Free Trial

No credit card required