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add homogeneous multi-core support

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This commit is contained in:
Jorge Aparicio 2019-06-18 10:31:31 +02:00
parent 81275bfa4f
commit 9897728709
33 changed files with 385 additions and 53 deletions
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17
macros/src/codegen/pre_init.rs
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@ -39,7 +39,8 @@ pub fn codegen(
}
stmts.push(quote!(
let mut core = rtfm::export::Peripherals::steal();
// NOTE(transmute) to avoid debug_assertion in multi-core mode
let mut core: rtfm::export::Peripherals = core::mem::transmute(());
));
let device = extra.device;
@ -64,25 +65,33 @@ pub fn codegen(
stmts.push(quote!(let _ = [(); ((1 << #nvic_prio_bits) - #priority as usize)];));
// NOTE this also checks that the interrupt exists in the `Interrupt` enumeration
let interrupt = util::interrupt_ident(core, app.args.cores);
stmts.push(quote!(
core.NVIC.set_priority(
#device::Interrupt::#name,
#device::#interrupt::#name,
rtfm::export::logical2hw(#priority, #nvic_prio_bits),
);
));
// NOTE unmask the interrupt *after* setting its priority: changing the priority of a pended
// interrupt is implementation defined
stmts.push(quote!(core.NVIC.enable(#device::Interrupt::#name);));
stmts.push(quote!(core.NVIC.enable(#device::#interrupt::#name);));
}
// cross-spawn barriers: now that priorities have been set and the interrupts have been unmasked
// we are ready to receive messages from *other* cores
if analysis.spawn_barriers.contains_key(&core) {
let sb = util::spawn_barrier(core);
let shared = if cfg!(feature = "heterogeneous") {
Some(quote!(
#[rtfm::export::shared]
))
} else {
None
};
const_app.push(quote!(
#[rtfm::export::shared]
#shared
static #sb: rtfm::export::Barrier = rtfm::export::Barrier::new();
));