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export: cortex_source_mask update

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This commit is contained in:
Oleksandr Babak 2025-05-15 16:49:20 +02:00 • committed by Emil Fresk
parent e8428f7c2c
commit d16ad16bd7
1 changed files with 24 additions and 18 deletions
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42
rtic/src/export/cortex_source_mask.rs
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@ -127,25 +127,27 @@ pub unsafe fn lock<T, R, const M: usize>(
masks: &[Mask<M>; 3],
f: impl FnOnce(&mut T) -> R,
) -> R {
if ceiling >= 4 {
// safe to manipulate outside critical section
// execute closure under protection of raised system ceiling
unsafe {
if ceiling >= 4 {
// safe to manipulate outside critical section
// execute closure under protection of raised system ceiling
// safe to manipulate outside critical section
critical_section::with(|_| f(&mut *ptr))
} else {
// safe to manipulate outside critical section
let mask = compute_mask(0, ceiling, masks);
let old_mask = read_mask(mask);
clear_enable_mask(mask);
// safe to manipulate outside critical section
critical_section::with(|_| f(&mut *ptr))
} else {
// safe to manipulate outside critical section
let mask = compute_mask(0, ceiling, masks);
let old_mask = read_mask(mask);
clear_enable_mask(mask);
// execute closure under protection of raised system ceiling
let r = f(&mut *ptr);
// execute closure under protection of raised system ceiling
let r = f(&mut *ptr);
set_enable_mask(mask, old_mask);
set_enable_mask(mask, old_mask);
// safe to manipulate outside critical section
r
// safe to manipulate outside critical section
r
}
}
}
@ -187,7 +189,7 @@ unsafe fn read_mask<const M: usize>(mask: Mask<M>) -> Mask<M> {
for i in 0..M {
// This check should involve compile time constants and be optimized out.
if mask.0[i] != 0 {
out.0[i] = (*NVIC::PTR).iser[i].read();
out.0[i] = unsafe { (*NVIC::PTR).iser[i].read() };
}
}
@ -200,7 +202,9 @@ unsafe fn set_enable_mask<const M: usize>(mask: Mask<M>, old_mask: Mask<M>) {
for i in 0..M {
// This check should involve compile time constants and be optimized out.
if mask.0[i] != 0 {
(*NVIC::PTR).iser[i].write(old_mask.0[i]);
unsafe {
(*NVIC::PTR).iser[i].write(old_mask.0[i]);
}
}
}
}
@ -211,7 +215,9 @@ unsafe fn clear_enable_mask<const M: usize>(mask: Mask<M>) {
for i in 0..M {
// This check should involve compile time constants and be optimized out.
if mask.0[i] != 0 {
(*NVIC::PTR).icer[i].write(mask.0[i]);
unsafe {
(*NVIC::PTR).icer[i].write(mask.0[i]);
}
}
}
}