michaelkuc6/blog_os
1
0
Fork 0
mirror of https://github.com/phil-opp/blog_os.git synced 2025-12-16 14:27:49 +00:00
Code Issues Projects Releases Wiki Activity

Merge branch 'post-09' into post-10

Browse Source
This commit is contained in:
Philipp Oppermann
2019-02-12 19:31:09 +01:00
parent ff49104764 76d3715eef
commit 36d6c6d0e9
1 changed files with 15 additions and 6 deletions
Download Patch File Download Diff File Expand all files Collapse all files

21
src/interrupts.rs
View File

@@ -13,8 +13,17 @@ use x86_64::structures::idt::{ExceptionStackFrame, InterruptDescriptorTable, Pag
pub const PIC_1_OFFSET: u8 = 32; pub const PIC_1_OFFSET: u8 = 32;
pub const PIC_2_OFFSET: u8 = PIC_1_OFFSET + 8; pub const PIC_2_OFFSET: u8 = PIC_1_OFFSET + 8;
pub const TIMER_INTERRUPT_ID: u8 = PIC_1_OFFSET; #[derive(Debug, Clone, Copy)]
pub const KEYBOARD_INTERRUPT_ID: u8 = PIC_1_OFFSET + 1; #[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> = pub static PICS: spin::Mutex<ChainedPics> =
spin::Mutex::new(unsafe { ChainedPics::new(PIC_1_OFFSET, PIC_2_OFFSET) }); 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_handler_fn(double_fault_handler)
.set_stack_index(gdt::DOUBLE_FAULT_IST_INDEX); .set_stack_index(gdt::DOUBLE_FAULT_IST_INDEX);
} }
idt[usize::from(TIMER_INTERRUPT_ID)].set_handler_fn(timer_interrupt_handler); idt[InterruptIndex::Timer.as_usize()].set_handler_fn(timer_interrupt_handler);
idt[usize::from(KEYBOARD_INTERRUPT_ID)].set_handler_fn(keyboard_interrupt_handler); idt[InterruptIndex::Keyboard.as_usize()].set_handler_fn(keyboard_interrupt_handler);
idt idt
}; };
} }
@@ -66,7 +75,7 @@ extern "x86-interrupt" fn double_fault_handler(
extern "x86-interrupt" fn timer_interrupt_handler(_stack_frame: &mut ExceptionStackFrame) { extern "x86-interrupt" fn timer_interrupt_handler(_stack_frame: &mut ExceptionStackFrame) {
print!("."); 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) { 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()) }
} }