diff options
Diffstat (limited to 'macros/src/codegen/pre_init.rs')
-rw-r--r-- | macros/src/codegen/pre_init.rs | 85 |
1 files changed, 0 insertions, 85 deletions
diff --git a/macros/src/codegen/pre_init.rs b/macros/src/codegen/pre_init.rs deleted file mode 100644 index 28ba29c0..00000000 --- a/macros/src/codegen/pre_init.rs +++ /dev/null @@ -1,85 +0,0 @@ -use crate::syntax::ast::App; -use proc_macro2::TokenStream as TokenStream2; -use quote::quote; - -use crate::{analyze::Analysis, codegen::util}; - -/// Generates code that runs before `#[init]` -pub fn codegen(app: &App, analysis: &Analysis) -> Vec<TokenStream2> { - let mut stmts = vec![]; - - let rt_err = util::rt_err_ident(); - - // Disable interrupts -- `init` must run with interrupts disabled - stmts.push(quote!(rtic::export::interrupt::disable();)); - - stmts.push(quote!( - // To set the variable in cortex_m so the peripherals cannot be taken multiple times - let mut core: rtic::export::Peripherals = rtic::export::Peripherals::steal().into(); - )); - - let device = &app.args.device; - let nvic_prio_bits = quote!(#device::NVIC_PRIO_BITS); - - // check that all dispatchers exists in the `Interrupt` enumeration regardless of whether - // they are used or not - let interrupt = util::interrupt_ident(); - for name in app.args.dispatchers.keys() { - stmts.push(quote!(let _ = #rt_err::#interrupt::#name;)); - } - - let interrupt_ids = analysis.interrupts.iter().map(|(p, (id, _))| (p, id)); - - // Unmask interrupts and set their priorities - for (&priority, name) in interrupt_ids.chain(app.hardware_tasks.values().filter_map(|task| { - if util::is_exception(&task.args.binds) { - // We do exceptions in another pass - None - } else { - Some((&task.args.priority, &task.args.binds)) - } - })) { - let es = format!( - "Maximum priority used by interrupt vector '{name}' is more than supported by hardware" - ); - // Compile time assert that this priority is supported by the device - stmts.push(quote!( - const _: () = if (1 << #nvic_prio_bits) < #priority as usize { ::core::panic!(#es); }; - )); - - stmts.push(quote!( - core.NVIC.set_priority( - #rt_err::#interrupt::#name, - rtic::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!(rtic::export::NVIC::unmask(#rt_err::#interrupt::#name);)); - } - - // Set exception priorities - for (name, priority) in app.hardware_tasks.values().filter_map(|task| { - if util::is_exception(&task.args.binds) { - Some((&task.args.binds, task.args.priority)) - } else { - None - } - }) { - let es = format!( - "Maximum priority used by interrupt vector '{name}' is more than supported by hardware" - ); - // Compile time assert that this priority is supported by the device - stmts.push(quote!( - const _: () = if (1 << #nvic_prio_bits) < #priority as usize { ::core::panic!(#es); }; - )); - - stmts.push(quote!(core.SCB.set_priority( - rtic::export::SystemHandler::#name, - rtic::export::logical2hw(#priority, #nvic_prio_bits), - );)); - } - - stmts -} |