Skip to content

Provide null segment selector as associated constant on SegmentSelector #373

New issue

Have a question about this project? Sign up for a free GitHub account to open an issue and contact its maintainers and the community.

Sign up for GitHub

By clicking “Sign up for GitHub”, you agree to our terms of service and privacy statement. We’ll occasionally send you account related emails.

Already on GitHub? Sign in to your account

Merged
merged 3 commits into from
Apr 12, 2022
Merged

Provide null segment selector as associated constant on SegmentSelector #373

Changes from all commits
Commits
Show all changes
3 commits
Select commit Hold shift + click to select a range
6797d63
Provide a method to retrieve the null segment descriptor.
Apr 8, 2022
0d3abb9
Rename function to null_segment_selctor
Apr 8, 2022
3959a0b
Provide null segment selector as associated constant on SegmentSelector
Apr 9, 2022
File filter

Filter by extension

Filter by extension
Conversations
Failed to load comments.
Loading
Jump to
Jump to file
Failed to load files.
Loading
Diff view
Diff view
4 changes: 4 additions & 0 deletions src/registers/segmentation.rs
View file
Open in desktop
Original file line number Diff line number Diff line change
Expand Up @@ -77,6 +77,10 @@ impl SegmentSelector {
SegmentSelector(index << 3 | (rpl as u16))
}

/// Can be used as a selector into a non-existent segment and assigned to segment registers,
/// e.g. data segment register in ring 0
pub const NULL: Self = Self::new(0, PrivilegeLevel::Ring0);

/// Returns the GDT index.
#[inline]
pub fn index(self) -> u16 {
Expand Down