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Create a TSS and save the double fault stack pointer it its IST

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Philipp Oppermann
2017-04-18 18:21:45 +02:00
parent 00bbd6fbc6
commit a05db759d7
1 changed files with 8 additions and 0 deletions
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8
src/interrupts.rs
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@@ -1,4 +1,6 @@
use x86_64::VirtualAddress;
use x86_64::structures::idt::{Idt, ExceptionStackFrame}; use x86_64::structures::idt::{Idt, ExceptionStackFrame};
use x86_64::structures::tss::TaskStateSegment;
use memory::MemoryController; use memory::MemoryController;
lazy_static! { lazy_static! {
@@ -10,10 +12,16 @@ lazy_static! {
}; };
} }
const DOUBLE_FAULT_IST_INDEX: usize = 0;
pub fn init(memory_controller: &mut MemoryController) { pub fn init(memory_controller: &mut MemoryController) {
let double_fault_stack = memory_controller.alloc_stack(1) let double_fault_stack = memory_controller.alloc_stack(1)
.expect("could not allocate double fault stack"); .expect("could not allocate double fault stack");
let mut tss = TaskStateSegment::new();
tss.interrupt_stack_table[DOUBLE_FAULT_IST_INDEX] = VirtualAddress(
double_fault_stack.top());
IDT.load(); IDT.load();
} }