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kvisc/ka/sys/intr/common.k
2019-07-24 16:52:26 +02:00

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; 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
; nx0 = caller's cr2
mov ax0, r14
mov ax1, $cr2
call RFS.LoadReg
; we don't preserve the r12 we got
mov r12, rax
mov rdx, zero
jmp rcx
TrapHandlers.epilog:
; TRAP return values: RAX-RDX
mov ax2, rax
call RFS.StoreReg, r14, $rax
mov ax2, rdx
call RFS.StoreReg, r14, $rdx
call IDT.DoneHandling, r13
iret