common.inc
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	;
	; Constants for system irql and IDT vector conversion.
	;

	RPL_MASK equ 00003H

	;
	; Gdt Descriptor Offset Definitions.
	;

	KGDT64_R3_DATA equ 00028H
	KGDT64_R3_CMTEB equ 00050H

	;
	; Define constants for system IRQL and IDT vector conversion.
	;

	MODE_MASK equ 00001H

	;
	; Define TRAP_FRAME64 field offsets.
	;
	TrErrorCode equ 00058H
	TrRip equ 00060H
	TrSegCs equ 00068H
	TrEFlags equ 00070H
	TrRsp equ 00078H
	TrSegSs equ 00080H

	;
	; Define special macros to align trap entry points on cache line boundaries.
	;
	; N.B. This will only work if all functions in this module are declared with
	; these macros.
	;

	TRAP_ENTRY macro

	local KernelMode

	push rbp
	push rsi
	push rdi
	push rbx

	push r11
	push r10
	push r9
	push r8
	push rdx
	push rcx
	push rax

	test byte ptr TrSegCs[rsp], MODE_MASK
	jz KernelMode

	swapgs

	KernelMode:

	mov rbp, rsp

	endm

	;
	; TRAP_END macro.
	;

	TRAP_END macro

	local KernelMode

	test byte ptr TrSegCs[rsp], MODE_MASK
	jz KernelMode

	swapgs

	KernelMode:

	pop rax
	pop rcx
	pop rdx
	pop r8
	pop r9
	pop r10
	pop r11

	pop rbx
	pop rdi
	pop rsi
	pop rbp

	endm