mirror of
https://gitlab.os-k.eu/os-k-team/kvisc.git
synced 2023-08-25 14:05:46 +02:00
53 lines
800 B
Plaintext
53 lines
800 B
Plaintext
; The OS/K Team licenses this file to you under the MIT license.
|
|
; See the LICENSE file in the project root for more information.
|
|
|
|
PrintBootMsg:
|
|
call print, .bootmsg
|
|
ret
|
|
|
|
.bootmsg = "Starting DOS...\n\n"
|
|
|
|
;
|
|
; Initialize TRAP handlers
|
|
;
|
|
InitSyscalls:
|
|
mov ax0, 1
|
|
call RFS.ActivateFrame
|
|
|
|
mov ax1, $rip
|
|
mov ax2, DefaultTrapHandler
|
|
call RFS.StoreReg
|
|
|
|
mov ax0, 256
|
|
mov ax1, 1
|
|
call IDT.AddHandler
|
|
|
|
ret
|
|
|
|
InitExcepts:
|
|
mov ax0, 2
|
|
call RFS.ActivateFrame
|
|
|
|
mov ax1, $rip
|
|
mov ax2, DefaultExceptionHandler
|
|
call RFS.StoreReg
|
|
|
|
mov ax0, zero
|
|
mov ax1, 2
|
|
call IDT.AddHandler
|
|
|
|
SwitchToCMD:
|
|
mov rax, Sys.Exit
|
|
trap 0
|
|
|
|
;
|
|
; Main function
|
|
;
|
|
main:
|
|
call PrintBootMsg
|
|
call InitSyscalls
|
|
call InitExcepts
|
|
call SwitchToCMD
|
|
ret
|
|
|