kvisc/ka/sys/main.k

; 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