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//! Application Program Status Register
/// Application Program Status Register
pub struct Apsr {
bits: u32,
}
impl Apsr {
/// Returns the contents of the register as raw bits
pub fn bits(&self) -> u32 {
self.bits
}
/// DSP overflow and saturation flag
pub fn q(&self) -> bool {
self.bits & (1 << 27) == (1 << 27)
}
/// Overflow flag
pub fn v(&self) -> bool {
self.bits & (1 << 28) == (1 << 28)
}
/// Carry or borrow flag
pub fn c(&self) -> bool {
self.bits & (1 << 29) == (1 << 29)
}
/// Zero flag
pub fn z(&self) -> bool {
self.bits & (1 << 30) == (1 << 30)
}
/// Negative flag
pub fn n(&self) -> bool {
self.bits & (1 << 31) == (1 << 31)
}
}
/// Reads the CPU register
#[inline(always)]
pub fn read() -> Apsr {
let r: u32;
unsafe {
asm!("mrs $0, APSR"
: "=r"(r)
:
:
: "volatile");
}
Apsr { bits: r }
}