From fb69c7b05894cee2b8bb691ead948798a0674059 Mon Sep 17 00:00:00 2001 From: Loic Guegan Date: Fri, 30 Apr 2021 10:43:44 +0200 Subject: Setup TSS segment --- src/core/gdt.S | 17 +++++++++++++++++ 1 file changed, 17 insertions(+) (limited to 'src/core/gdt.S') diff --git a/src/core/gdt.S b/src/core/gdt.S index f928b3f..c32db59 100644 --- a/src/core/gdt.S +++ b/src/core/gdt.S @@ -1,4 +1,5 @@ .code64 +.global gdt64_tss gdt64: gdt64_null: @@ -15,6 +16,22 @@ gdt64: .byte 0 .byte 0b10010010 .word 0 + gdt64_cs_user: + .long 0 + .byte 0 + .byte 0b11111100 + .byte 0b00100000 + .byte 0 + gdt64_ds_user: + .long 0 + .byte 0 + .byte 0b11110010 + .word 0 + gdt64_tss: + .long 0 + .long 0 + .long 0 + .long 0 gdtr: .word . - gdt64 - 1 .quad gdt64 -- cgit v1.2.3