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#[derive(Clone, Copy, Debug, Eq, PartialEq)]
pub enum Primask {
Active,
Inactive,
}
impl Primask {
pub fn is_active(&self) -> bool {
*self == Primask::Active
}
pub fn is_inactive(&self) -> bool {
*self == Primask::Inactive
}
}
#[inline(always)]
pub fn read() -> Primask {
let r: u32;
unsafe {
asm!("mrs $0, PRIMASK"
: "=r"(r)
:
:
: "volatile");
}
if r & (1 << 0) == (1 << 0) {
Primask::Inactive
} else {
Primask::Active
}
}