paging-calculator is a CLI utility written in Rust that helps you find the indices that a
virtual address will have on different architectures or paging implementations.
It takes a (virtual) address in hexadecimal format and shows you which index will be used for what
page-table level. It can be installed with $ cargo install paging-calculator.
Valid inputs are:
- $ paging-calculator 0x1337
- $ paging-calculator 0xdead_beef (underscores are accepted)
The following screenshot summarizes its functionality:
I worked on a project where I need to set up page-tables on my own. I had a few problems to find out what I actually have to do and what indices are used at which level. With the help of this utility, things are a little clearer to me now. I didn't spend too much time to make the code nice. Hence, it's pretty quick and dirty.