; The OS/K Team licenses this file to you under the MIT license.
; See the LICENSE file in the project root for more information.

TRAP0_STACK := 0x300000

trap0_handler:

.init:
    mov rax, .impl
    mov rbp, TRAP0_STACK
    jmp TrapHandlers.prolog

.impl:
    mov ax0, r12
    call RFS.LoadArgs

    b.z ax0, Sys.HLT, .handle_HLT
    b.z ax0, Sys.DIR, .handle_DIR

.fini:
    jmp TrapHandlers.epilog

;
; Syscall implementations
;

.handle_DIR:
    call CMD.builtins.dir
    jmp .fini

.handle_HLT:
    hlt

.HLT.loop:
    xpause

    scan rax
    b.z rax, 0, .HLT.loop

    prn rax
    jmp .HLT.loop