GDT data segment
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@ -1,7 +1,7 @@
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use lazy_static::lazy_static;
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use x86_64::{
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instructions::tables::load_tss,
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registers::segmentation::{Segment, CS},
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registers::segmentation::{Segment, CS, DS, ES, FS, GS, SS},
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structures::{
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gdt::{Descriptor, GlobalDescriptorTable, SegmentSelector},
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tss::TaskStateSegment,
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@ -30,12 +30,14 @@ lazy_static! {
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static ref GDT: (GlobalDescriptorTable, Selectors) = {
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let mut gdt = GlobalDescriptorTable::new();
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let code_selector = gdt.append(Descriptor::kernel_code_segment());
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let data_selector = gdt.append(Descriptor::kernel_data_segment());
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let tss_selector = gdt.append(Descriptor::tss_segment(&TSS));
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(
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gdt,
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Selectors {
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code_selector,
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data_selector,
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tss_selector,
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},
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)
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@ -44,6 +46,7 @@ lazy_static! {
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struct Selectors {
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code_selector: SegmentSelector,
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data_selector: SegmentSelector,
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tss_selector: SegmentSelector,
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}
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@ -52,6 +55,11 @@ pub fn init() {
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unsafe {
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CS::set_reg(GDT.1.code_selector);
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DS::set_reg(GDT.1.data_selector);
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ES::set_reg(GDT.1.data_selector);
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FS::set_reg(GDT.1.data_selector);
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GS::set_reg(GDT.1.data_selector);
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SS::set_reg(GDT.1.data_selector);
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load_tss(GDT.1.tss_selector);
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}
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}
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