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

	RPL_MASK equ 00003H

	;
	; Gdt Descriptor Offset Definitions.
	;

	KGDT_R3_DATA equ 00020H
	KGDT_R0_PCR equ 00030H

	;++
	;
	; ENTER_TRAP
	;
	; Macro Description:
	;
	; Build the TRAP_FRAME structure and set registers needed by a trap.
	;
	;--

	TRAP_ENTRY macro

	push ebp
	push ebx
	push esi
	push edi

	push fs

	push eax
	push ecx
	push edx

	push ds
	push es
	push gs

	;
	; Set up segment registers.
	;

	mov ax, KGDT_R3_DATA or RPL_MASK
	mov ds, ax
	mov es, ax

	mov ax, KGDT_R0_PCR
	mov fs, ax

	endm

	TRAP_END macro

	pop gs
	pop es
	pop ds

	pop edx
	pop ecx
	pop eax

	pop fs

	pop edi
	pop esi
	pop ebx
	pop ebp

	endm