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Use bitflags to create an EntryFlags type

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Philipp Oppermann
2017-04-13 18:28:32 +02:00
parent f957f2ecde
commit 148d506629
1 changed files with 19 additions and 0 deletions
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19
src/memory/paging/entry.rs
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@@ -10,4 +10,23 @@ impl Entry {
pub fn set_unused(&mut self) { pub fn set_unused(&mut self) {
self.0 = 0; self.0 = 0;
} }
pub fn flags(&self) -> EntryFlags {
EntryFlags::from_bits_truncate(self.0)
}
}
bitflags! {
pub flags EntryFlags: u64 {
const PRESENT = 1 << 0,
const WRITABLE = 1 << 1,
const USER_ACCESSIBLE = 1 << 2,
const WRITE_THROUGH = 1 << 3,
const NO_CACHE = 1 << 4,
const ACCESSED = 1 << 5,
const DIRTY = 1 << 6,
const HUGE_PAGE = 1 << 7,
const GLOBAL = 1 << 8,
const NO_EXECUTE = 1 << 63,
}
} }