44 lines
674 B
Plaintext
44 lines
674 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:
|
|
mov rcx, STRLEN_MAX
|
|
mov rdx, .bootmsg
|
|
prns.rep.nz rdx
|
|
ret
|
|
|
|
.bootmsg = "Starting DOS...\n\n"
|
|
|
|
;
|
|
; Initialize TRAP handlers
|
|
;
|
|
InitSyscalls:
|
|
mov ax0, 1
|
|
|
|
.prepare_next:
|
|
call RFS.ActivateFrame
|
|
|
|
mov ax1, $rip
|
|
mov ax2, trap0_handler
|
|
call RFS.StoreReg
|
|
|
|
mov ax1, ax0
|
|
add ax0, ax0, 255 # TRAP no. (ax0 - 1)
|
|
call IDT.AddHandler
|
|
|
|
ret
|
|
|
|
SwitchToCMD:
|
|
mov rax, Sys.Exit
|
|
trap 0
|
|
|
|
;
|
|
; Main function
|
|
;
|
|
main:
|
|
call PrintBootMsg
|
|
call InitSyscalls
|
|
call SwitchToCMD
|
|
ret
|
|
|