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51 lines
1.0 KiB
51 lines
1.0 KiB
use x86_64;
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pub mod consts;
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mod handler;
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mod trapframe;
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pub use self::trapframe::*;
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pub use self::handler::*;
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use super::apic::*;
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use consts::KERNEL_OFFSET;
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#[inline(always)]
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pub unsafe fn enable() {
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x86_64::instructions::interrupts::enable();
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}
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#[inline(always)]
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pub unsafe fn disable() {
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x86_64::instructions::interrupts::disable();
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}
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#[inline(always)]
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pub unsafe fn disable_and_store() -> usize {
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let r: usize;
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asm!("pushfq; popq $0; cli" : "=r"(r) :: "memory");
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r
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}
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#[inline(always)]
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pub unsafe fn restore(flags: usize) {
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asm!("pushq $0; popfq" :: "r"(flags) : "memory" "flags");
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}
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#[inline(always)]
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pub fn no_interrupt(f: impl FnOnce()) {
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let flags = unsafe { disable_and_store() };
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f();
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unsafe { restore(flags) };
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}
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#[inline(always)]
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pub fn enable_irq(irq: u8) {
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let mut ioapic = unsafe { IoApic::new(KERNEL_OFFSET + IOAPIC_ADDR as usize) };
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ioapic.enable(irq, 0);
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}
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#[inline(always)]
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pub fn ack(irq: u8) {
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let mut lapic = unsafe { XApic::new(KERNEL_OFFSET + LAPIC_ADDR) };
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lapic.eoi();
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} |