michaelkuc6/blog_os
1
0
Fork 0
mirror of https://github.com/phil-opp/blog_os.git synced 2025-12-16 22:37:49 +00:00
Code Issues Projects Releases Wiki Activity

Fix dead link

Browse Source
This commit is contained in:
Philipp Oppermann
2020-08-02 14:03:48 +02:00
parent 3c070c6dc0
commit 277368537b
2 changed files with 2 additions and 2 deletions
Download Patch File Download Diff File Expand all files Collapse all files

2
blog/content/first-edition/posts/10-double-faults/index.md
View File

@@ -495,7 +495,7 @@ We define that the 0th IST entry is the double fault stack (any other IST index
#### Loading the TSS #### Loading the TSS
Now that we created a new TSS, we need a way to tell the CPU that it should use it. Unfortunately, this is a bit cumbersome, since the TSS is a Task State _Segment_ (for historical reasons). So instead of loading the table directly, we need to add a new segment descriptor to the [Global Descriptor Table] \(GDT). Then we can load our TSS invoking the [`ltr` instruction] with the respective GDT index. Now that we created a new TSS, we need a way to tell the CPU that it should use it. Unfortunately, this is a bit cumbersome, since the TSS is a Task State _Segment_ (for historical reasons). So instead of loading the table directly, we need to add a new segment descriptor to the [Global Descriptor Table] \(GDT). Then we can load our TSS invoking the [`ltr` instruction] with the respective GDT index.
[Global Descriptor Table]: http://www.flingos.co.uk/docs/reference/Global-Descriptor-Table/ [Global Descriptor Table]: https://web.archive.org/web/20190217233448/https://www.flingos.co.uk/docs/reference/Global-Descriptor-Table/
[`ltr` instruction]: https://www.felixcloutier.com/x86/ltr [`ltr` instruction]: https://www.felixcloutier.com/x86/ltr
### The Global Descriptor Table (again) ### The Global Descriptor Table (again)

2
blog/content/second-edition/posts/06-double-faults/index.md
View File

@@ -271,7 +271,7 @@ Note that this double fault stack has no guard page that protects against stack
#### Loading the TSS #### Loading the TSS
Now that we created a new TSS, we need a way to tell the CPU that it should use it. Unfortunately this is a bit cumbersome, since the TSS uses the segmentation system (for historical reasons). Instead of loading the table directly, we need to add a new segment descriptor to the [Global Descriptor Table] \(GDT). Then we can load our TSS invoking the [`ltr` instruction] with the respective GDT index. (This is the reason why we named our module `gdt`.) Now that we created a new TSS, we need a way to tell the CPU that it should use it. Unfortunately this is a bit cumbersome, since the TSS uses the segmentation system (for historical reasons). Instead of loading the table directly, we need to add a new segment descriptor to the [Global Descriptor Table] \(GDT). Then we can load our TSS invoking the [`ltr` instruction] with the respective GDT index. (This is the reason why we named our module `gdt`.)
[Global Descriptor Table]: http://www.flingos.co.uk/docs/reference/Global-Descriptor-Table/ [Global Descriptor Table]: https://web.archive.org/web/20190217233448/https://www.flingos.co.uk/docs/reference/Global-Descriptor-Table/
[`ltr` instruction]: https://www.felixcloutier.com/x86/ltr [`ltr` instruction]: https://www.felixcloutier.com/x86/ltr
### The Global Descriptor Table ### The Global Descriptor Table