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83 lines
2.3 KiB
Rust
83 lines
2.3 KiB
Rust
// SPDX-License-Identifier: MIT OR Apache-2.0
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//
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// Copyright (c) 2018-2022 Andre Richter <andre.o.richter@gmail.com>
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//! Architectural asynchronous exception handling.
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//!
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//! # Orientation
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//!
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//! Since arch modules are imported into generic modules using the path attribute, the path of this
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//! file is:
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//!
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//! crate::exception::asynchronous::arch_asynchronous
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use aarch64_cpu::registers::*;
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use tock_registers::interfaces::Readable;
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//--------------------------------------------------------------------------------------------------
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// Private Definitions
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//--------------------------------------------------------------------------------------------------
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trait DaifField {
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fn daif_field() -> tock_registers::fields::Field<u64, DAIF::Register>;
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}
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struct Debug;
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struct SError;
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struct IRQ;
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struct FIQ;
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//--------------------------------------------------------------------------------------------------
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// Private Code
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//--------------------------------------------------------------------------------------------------
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impl DaifField for Debug {
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fn daif_field() -> tock_registers::fields::Field<u64, DAIF::Register> {
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DAIF::D
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}
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}
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impl DaifField for SError {
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fn daif_field() -> tock_registers::fields::Field<u64, DAIF::Register> {
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DAIF::A
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}
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}
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impl DaifField for IRQ {
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fn daif_field() -> tock_registers::fields::Field<u64, DAIF::Register> {
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DAIF::I
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}
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}
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impl DaifField for FIQ {
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fn daif_field() -> tock_registers::fields::Field<u64, DAIF::Register> {
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DAIF::F
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}
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}
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fn is_masked<T>() -> bool
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where
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T: DaifField,
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{
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DAIF.is_set(T::daif_field())
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}
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//--------------------------------------------------------------------------------------------------
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// Public Code
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//--------------------------------------------------------------------------------------------------
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/// Print the AArch64 exceptions status.
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#[rustfmt::skip]
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pub fn print_state() {
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use crate::info;
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let to_mask_str = |x| -> _ {
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if x { "Masked" } else { "Unmasked" }
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};
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info!(" Debug: {}", to_mask_str(is_masked::<Debug>()));
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info!(" SError: {}", to_mask_str(is_masked::<SError>()));
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info!(" IRQ: {}", to_mask_str(is_masked::<IRQ>()));
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info!(" FIQ: {}", to_mask_str(is_masked::<FIQ>()));
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}
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