Re: [OSDev] How to switch to long mode in x86 CPUs?

cross@spitfire.i.gajendra.net (Dan Cross) writes:

I am trying to develop my own, simple operating system to learn more
about how kernels work and low level stuff like that.  However, I am
stuck at setting up paging while switching long mode (64-bit protected
mode) in x86 processors.

Two things in addition to the fellow who cross-posted this and gave
you some great analysis.

1. If you use bochs, you can single step the emulator itself, and
basically have a microcode view of what the processor's trying to do
with your code.  This can save you _tons_ of time.

2. You should crib from working code.  For 32-bit x86, may I humbly
point at my protected mode microkernel, VSTa:

https://sources.vsta.org:7100/vsta/index

Andy Valencia
Home page: https://www.vsta.org/andy/
To contact me: https://www.vsta.org/contact/andy.html
Fediverse: @vandys@goto.vsta.org