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Merge branch 'post-08' into post-09

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Philipp Oppermann
2019-02-12 19:31:09 +01:00
parent bda1b8929c babf9d8cce
commit 76d3715eef
1 changed files with 15 additions and 6 deletions
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21
src/interrupts.rs
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@@ -13,8 +13,17 @@ use x86_64::structures::idt::{ExceptionStackFrame, InterruptDescriptorTable, Pag
pub const PIC_1_OFFSET: u8 = 32;
pub const PIC_2_OFFSET: u8 = PIC_1_OFFSET + 8;
pub const TIMER_INTERRUPT_ID: u8 = PIC_1_OFFSET;
pub const KEYBOARD_INTERRUPT_ID: u8 = PIC_1_OFFSET + 1;
#[derive(Debug, Clone, Copy)]
#[repr(u8)]
pub enum InterruptIndex {
Timer = PIC_1_OFFSET,
Keyboard,
}
impl InterruptIndex {
fn as_u8(self) -> u8 { self as u8 }
fn as_usize(self) -> usize { usize::from(self.as_u8()) }
}
pub static PICS: spin::Mutex<ChainedPics> =
spin::Mutex::new(unsafe { ChainedPics::new(PIC_1_OFFSET, PIC_2_OFFSET) });
@@ -29,8 +38,8 @@ lazy_static! {
.set_handler_fn(double_fault_handler)
.set_stack_index(gdt::DOUBLE_FAULT_IST_INDEX);
}
idt[usize::from(TIMER_INTERRUPT_ID)].set_handler_fn(timer_interrupt_handler);
idt[usize::from(KEYBOARD_INTERRUPT_ID)].set_handler_fn(keyboard_interrupt_handler);
idt[InterruptIndex::Timer.as_usize()].set_handler_fn(timer_interrupt_handler);
idt[InterruptIndex::Keyboard.as_usize()].set_handler_fn(keyboard_interrupt_handler);
idt
};
}
@@ -66,7 +75,7 @@ extern "x86-interrupt" fn double_fault_handler(
extern "x86-interrupt" fn timer_interrupt_handler(_stack_frame: &mut ExceptionStackFrame) {
print!(".");
unsafe { PICS.lock().notify_end_of_interrupt(TIMER_INTERRUPT_ID) }
unsafe { PICS.lock().notify_end_of_interrupt(InterruptIndex::Timer.as_u8()) }
}
extern "x86-interrupt" fn keyboard_interrupt_handler(_stack_frame: &mut ExceptionStackFrame) {
@@ -92,5 +101,5 @@ extern "x86-interrupt" fn keyboard_interrupt_handler(_stack_frame: &mut Exceptio
}
}
unsafe { PICS.lock().notify_end_of_interrupt(KEYBOARD_INTERRUPT_ID) }
unsafe { PICS.lock().notify_end_of_interrupt(InterruptIndex::Keyboard.as_u8()) }
}