89 lines
2.5 KiB
Rust
89 lines
2.5 KiB
Rust
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//! Interrupts.
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use core::fmt;
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/// x86 External Interrupts (1-16).
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pub static EXCEPTIONS: [InterruptDescription; 21] = [
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Descriptor::new("Division error", Kind::Fault),
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Descriptor::new("Debug trap", Kind::Trap),
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Descriptor::new("Unmaskable interrupt", Kind::Unmaskable),
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Descriptor::new("Breakpoint", Kind::Trap),
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Descriptor::new("Overflow", Kind::Trap),
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Descriptor::new("Out of bound", Kind::Fault),
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Descriptor::new("Invalid opcode", Kind::Fault),
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Descriptor::new("Device unavailable", Kind::Fault),
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Descriptor::new("Double fault", Kind::Fault),
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Descriptor::new("Coprocessor segment overrun", Kind::Fault),
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Descriptor::new("Invalid TSS", Kind::Fault),
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Descriptor::new("Segment not present", Kind::Fault),
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Descriptor::new("Stack-segment fault", Kind::Fault),
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Descriptor::new("General protection", Kind::Fault),
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Descriptor::new("Page fault", Kind::Fault),
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Descriptor::new("Reserved", Kind::Reserved),
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Descriptor::new("x87 FPU", Kind::Fault),
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Descriptor::new("Unaligned memory access", Kind::Fault),
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Descriptor::new("Machine check", Kind::Abort),
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Descriptor::new("SIMD floating-point", Kind::Fault),
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Descriptor::new("SIMD floating-point", Kind::Fault),
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Descriptor::new("Virtualization violation", Kind::Fault),
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];
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/// An interrupt description.
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#[derive(Debug, Copy, Clone)]
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pub struct Descriptor {
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/// The description of this interrupt.
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pub desc: &'static str,
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/// The interrupt type.
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pub kind: Kind,
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}
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impl Descriptor {
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/// Create a new interrupt description.
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pub fn new(desc: &'static str, kind: Kind) -> Descriptor {
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Descriptor {
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desc: desc,
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kind: kind,
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}
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}
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}
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/// The interrupt kind.
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pub enum Kind {
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/// A fault.
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///
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/// This can have multiple sources, but is often a result of a program error of some sort.
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Fault,
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/// A trap.
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///
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/// These are often for debugging purposes.
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Trap,
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/// A deliberate abort.
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Abort,
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/// An unmaskable interrupt.
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///
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/// This is a forced interrupt which need to be handled immediately.
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Unmaskable,
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/// Reserved or deprecated.
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Reserved,
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}
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/// Enable interrupts.
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pub unsafe fn enable() {
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asm!("sti");
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}
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/// Disable interrupts.
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pub unsafe fn disable() {
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asm!("cli");
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}
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/// Fire a software interrupt.
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///
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/// Due to inlining being strictly required, we use a macro.
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#[macro_export]
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macro_rules! interrupt {
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($int:expr) => {{
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asm!("int $0" :: "N" ($int));
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}};
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}
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