trap.asm
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trap.asm
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	include common.inc

	;
	; Extern functions.
	;

	EXTRN AvmRdtscEmulationTrap0D:PROC
	EXTRN AvmpRdtscEmulationTrap0DOriginalHandler:QWORD

	; ;
	; ------------------------------------------------------------------- ;
	; CODE SECTION ;
	; ------------------------------------------------------------------- ;
	; ;

	.CODE

	AvmpRdtscEmulationTrap0D PROC PUBLIC
	TRAP_ENTRY
	;
	; Call our new trap function.
	;

	mov rcx, rsp ; set first parameter

	sub rsp, 32 ; shadow space
	call AvmRdtscEmulationTrap0D
	add rsp, 32 ; shadow space

	;
	; If our trap did not handle the fault,
	; pass it to the original trap handler.
	;

	cmp rax, 0
	jz OldHandler

	;
	; Fault has been handled,
	; return from the interrupt handler.
	;

	TRAP_END

	add rsp, 8
	iretq

	OldHandler:

	TRAP_END
	jmp qword ptr [AvmpRdtscEmulationTrap0DOriginalHandler]

	AvmpRdtscEmulationTrap0D ENDP

	END