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

TrapHandlers.prolog:
    mov rbp, rsp
    sub rsp, rsp, 24
    mov q[rbp-8], r11
    mov q[rbp-16], r12
    mov q[rbp-24], r13

    mov rdx, cr2

    ; nx0 = caller's cr2
    mov ax0, r12
    mov ax1, $cr2
    iocall CPUDEV, RFS.LoadReg.slot

    mov nx0, cr2
    mov cr2, rdx
    mov rdx, zero

    jmp rcx

TrapHandlers.epilog:
    mov r13, q[rbp-24]
    mov r12, q[rbp-16]
    mov r11, q[rbp-8]

    ; TRAP return values: RAX-RDX

    mov ax2, rax
    call RFS.StoreReg, r12, $rax

    mov ax2, rdx
    call RFS.StoreReg, r12, $rdx

    call IDT.DoneHandling, r11

    iret