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

Load null selectors to all data registers

Browse Source 
This is required for some instructions such as iretq (ss must be valid or 0).
This commit is contained in:
Philipp Oppermann
2017-01-14 16:38:33 +01:00
parent e179dadf70
commit 8f8b46a9b6
1 changed files with 8 additions and 0 deletions
Download Patch File Download Diff File Expand all files Collapse all files

8
src/arch/x86_64/long_mode_init.asm
View File

@@ -13,6 +13,14 @@ extern rust_main
section .text
bits 64
long_mode_start:
; load 0 into all data segment registers
mov ax, 0
mov ss, ax
mov ds, ax
mov es, ax
mov fs, ax
mov gs, ax
; call rust main (with multiboot pointer in rdi)
call rust_main
.os_returned: