80 lines
1.3 KiB
NASM
80 lines
1.3 KiB
NASM
title "NtCurTeb.asm"
|
|
;++
|
|
;
|
|
; Copyright (c) 1989 Microsoft Corporation
|
|
;
|
|
; Module Name:
|
|
;
|
|
; NtCurTeb.asm
|
|
;
|
|
; Abstract:
|
|
;
|
|
; Efficient NtCurrentTeb code.
|
|
;
|
|
; Author:
|
|
;
|
|
; Bryan Willman (bryanwi) 28 feb 90
|
|
;
|
|
; Environment:
|
|
;
|
|
; Revision History:
|
|
;
|
|
;--
|
|
|
|
.386p
|
|
.xlist
|
|
include ks386.inc
|
|
include callconv.inc ; calling convention macros
|
|
.list
|
|
|
|
page ,132
|
|
subttl "NtCurrentTeb"
|
|
|
|
IFDEF NTOS_KERNEL_RUNTIME
|
|
.PAGE SEGMENT DWORD PUBLIC 'CODE'
|
|
ELSE
|
|
_TEXT SEGMENT DWORD PUBLIC 'CODE'
|
|
ENDIF
|
|
ASSUME DS:FLAT, ES:FLAT, SS:NOTHING, FS:NOTHING, GS:NOTHING
|
|
|
|
;++
|
|
;
|
|
; PTEB
|
|
; NtCurrentTeb();
|
|
;
|
|
; Routine Description:
|
|
;
|
|
; This routine returns the address of the current TEB.
|
|
;
|
|
; Arguments:
|
|
;
|
|
; None
|
|
;
|
|
; Return Value:
|
|
;
|
|
; Address of TEB.
|
|
;
|
|
;--
|
|
cPublicProc ___NtCurrentTeb ,0
|
|
cPublicFpo 0,0
|
|
|
|
;
|
|
; How this works in both user and kernel mode.
|
|
;
|
|
; In user mode, TEB.TIB.Self is flat address of containing structure.
|
|
; In kernel mode, PCR.TIB.Self is flat address of the TEB.
|
|
; Same offset both places, so fs:PcTeb is always the flat address
|
|
; of the TEB.
|
|
;
|
|
|
|
mov eax,fs:[PcTeb]
|
|
stdRET ___NtCurrentTeb
|
|
|
|
stdENDP ___NtCurrentTeb
|
|
IFDEF NTOS_KERNEL_RUNTIME
|
|
.PAGE ENDS
|
|
ELSE
|
|
_TEXT ENDS
|
|
ENDIF
|
|
end
|