mirror of
https://github.com/RGBCube/serenity
synced 2025-07-25 19:07:35 +00:00
Kernel: Fix GDT and segment selectors to make userland work on x86_64
Userland faulted on the very first instruction before because the PML4T/PDPT/etc. weren't marked as user-accessible. For some reason x86 doesn't care about that. Also, we need to provide an appropriate userspace stack segment selector to iretq.
This commit is contained in:
parent
04fc7d708c
commit
b5aad1c81d
4 changed files with 16 additions and 9 deletions
|
@ -1070,6 +1070,7 @@ UNMAP_AFTER_INIT void Processor::gdt_init()
|
|||
#else
|
||||
write_raw_gdt_entry(GDT_SELECTOR_CODE0, 0x0000ffff, 0x00af9a00); // code0
|
||||
write_raw_gdt_entry(GDT_SELECTOR_CODE3, 0x0000ffff, 0x00affa00); // code3
|
||||
write_raw_gdt_entry(GDT_SELECTOR_DATA3, 0x0000ffff, 0x008ff200); // data3
|
||||
#endif
|
||||
|
||||
#if ARCH(I386)
|
||||
|
|
Loading…
Add table
Add a link
Reference in a new issue