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cortex-m: remove owned interrupts.

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This commit is contained in:
Dario Nieuwenhuis
2023-06-01 02:22:46 +02:00
parent 2a435e53b7
commit 404aa29289
54 changed files with 239 additions and 439 deletions
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11
embassy-macros/src/lib.rs
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@ -169,14 +169,3 @@ pub fn cortex_m_interrupt_declare(item: TokenStream) -> TokenStream {
let name = syn::parse_macro_input!(item as syn::Ident);
cortex_m_interrupt_declare::run(name).unwrap_or_else(|x| x).into()
}
/// # interrupt_take procedural macro
///
/// core::panic! is used as a default way to panic in this macro as there is no sensible way of enabling/disabling defmt for macro generation.
/// We are aware that this brings bloat in the form of core::fmt, but the bloat is already included with e.g. array indexing panics.
/// To get rid of this bloat, use the compiler flags `-Zbuild-std=core -Zbuild-std-features=panic_immediate_abort`.
#[proc_macro]
pub fn cortex_m_interrupt_take(item: TokenStream) -> TokenStream {
let name = syn::parse_macro_input!(item as syn::Ident);
cortex_m_interrupt_take::run(name).unwrap_or_else(|x| x).into()
}

21
embassy-macros/src/macros/cortex_m_interrupt_declare.rs
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@ -3,32 +3,19 @@ use quote::{format_ident, quote};
pub fn run(name: syn::Ident) -> Result<TokenStream, TokenStream> {
let name = format_ident!("{}", name);
let name_interrupt = format_ident!("{}", name);
let name_handler = format!("__EMBASSY_{}_HANDLER", name);
let doc = format!("{} interrupt singleton.", name);
let doc = format!("{} interrupt.", name);
let result = quote! {
#[doc = #doc]
#[allow(non_camel_case_types)]
pub struct #name_interrupt(());
unsafe impl ::embassy_cortex_m::interrupt::Interrupt for #name_interrupt {
fn number(&self) -> u16 {
pub enum #name{}
unsafe impl ::embassy_cortex_m::interrupt::Interrupt for #name {
fn number() -> u16 {
use cortex_m::interrupt::InterruptNumber;
let irq = InterruptEnum::#name;
irq.number() as u16
}
unsafe fn steal() -> Self {
Self(())
}
unsafe fn __handler(&self) -> &'static ::embassy_cortex_m::interrupt::DynHandler {
#[export_name = #name_handler]
static HANDLER: ::embassy_cortex_m::interrupt::DynHandler = ::embassy_cortex_m::interrupt::DynHandler::new();
&HANDLER
}
}
::embassy_hal_common::impl_peripheral!(#name_interrupt);
};
Ok(result)
}

57
embassy-macros/src/macros/cortex_m_interrupt_take.rs
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@ -1,57 +0,0 @@
use proc_macro2::TokenStream;
use quote::{format_ident, quote};
pub fn run(name: syn::Ident) -> Result<TokenStream, TokenStream> {
let name = format!("{}", name);
let name_interrupt = format_ident!("{}", name);
let name_handler = format!("__EMBASSY_{}_HANDLER", name);
#[cfg(feature = "rtos-trace-interrupt")]
let (isr_enter, isr_exit) = (
quote! {
::embassy_executor::rtos_trace_interrupt! {
::embassy_executor::_export::trace::isr_enter();
}
},
quote! {
::embassy_executor::rtos_trace_interrupt! {
::embassy_executor::_export::trace::isr_exit();
}
},
);
#[cfg(not(feature = "rtos-trace-interrupt"))]
let (isr_enter, isr_exit) = (quote! {}, quote! {});
let result = quote! {
{
#[allow(non_snake_case)]
#[export_name = #name]
pub unsafe extern "C" fn trampoline() {
extern "C" {
#[link_name = #name_handler]
static HANDLER: interrupt::DynHandler;
}
let func = HANDLER.func.load(interrupt::_export::atomic::Ordering::Relaxed);
let ctx = HANDLER.ctx.load(interrupt::_export::atomic::Ordering::Relaxed);
let func: fn(*mut ()) = ::core::mem::transmute(func);
#isr_enter
func(ctx);
#isr_exit
}
static TAKEN: interrupt::_export::atomic::AtomicBool = interrupt::_export::atomic::AtomicBool::new(false);
if TAKEN.compare_exchange(false, true, interrupt::_export::atomic::Ordering::AcqRel, interrupt::_export::atomic::Ordering::Acquire).is_err() {
core::panic!("IRQ Already taken");
}
let irq: interrupt::#name_interrupt = unsafe { ::core::mem::transmute(()) };
irq
}
};
Ok(result)
}

1
embassy-macros/src/macros/mod.rs
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@ -1,5 +1,4 @@
pub mod cortex_m_interrupt;
pub mod cortex_m_interrupt_declare;
pub mod cortex_m_interrupt_take;
pub mod main;
pub mod task;