54 lines
1.8 KiB
ArmAsm
54 lines
1.8 KiB
ArmAsm
/* $XFree86: xc/programs/Xserver/hw/xfree86/os-support/misc/IODelay.S,v 1.1 1999/07/10 07:24:50 dawes Exp $ */
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/*******************************************************************************
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Copyright 1994 by Glenn G. Lai
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All Rights Reserved
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Permission to use, copy, modify, and distribute this software and its
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documentation for any purpose and without fee is hereby granted,
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provided that the above copyr notice appear in all copies and that
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both that copyr notice and this permission notice appear in
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supporting documentation, and that the name of Glenn G. Lai not be
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used in advertising or publicity pertaining to distribution of the
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software without specific, written prior permission.
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Glenn G. Lai DISCLAIMS ALL WARRANTIES WITH REGARD TO THIS SOFTWARE, INCLUDING
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ALL IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS, IN NO EVENT SHALL
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DIGITAL BE LIABLE FOR ANY SPECIAL, INDIRECT OR CONSEQUENTIAL DAMAGES OR
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ANY DAMAGES WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS,
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WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION,
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ARISING OUT OF OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS
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SOFTWARE.
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Glenn G. Lai
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P.O. Box 4314
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Austin, Tx 78765
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glenn@cs.utexas.edu)
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7/21/94
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*******************************************************************************/
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/* $XConsortium: IODelay.s /main/4 1996/02/21 17:40:21 kaleb $ */
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/*
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* All we really need is a delay of about 40ns for I/O recovery for just
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* about any occasion, but we'll be more conservative here: On a
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* 100-MHz CPU, produce at least a delay of 1,000ns.
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*/
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#include "assyntax.h"
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FILE("DACDelay.s")
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AS_BEGIN
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GLOBL GLNAME(xf86IODelay)
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SEG_TEXT
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ALIGNTEXT4
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GLNAME(xf86IODelay):
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MOV_L (CONST(100), EAX)
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delay_it:
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DEC_L (EAX)
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JNE (delay_it)
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RET
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