NetBSD/lib/libarch/arm32/arm32_drain_writebuf.2

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.\" Copyright (c) 1997 Mark Brinicombe
.\" All rights reserved.
.\"
.\" Redistribution and use in source and binary forms, with or without
.\" modification, are permitted provided that the following conditions
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.\" 2. Redistributions in binary form must reproduce the above copyright
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.\" documentation and/or other materials provided with the distribution.
.\" 3. All advertising materials mentioning features or use of this software
.\" must display the following acknowledgement:
.\" This product includes software developed by Mark Brinicombe
.\" 4. Neither the name of the University nor the names of its contributors
.\" may be used to endorse or promote products derived from this software
.\" without specific prior written permission.
.\"
.\" THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
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.\" DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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.\" $NetBSD: arm32_drain_writebuf.2,v 1.1 1997/10/05 23:17:31 mark Exp $
.\"
.Dd October 03, 1997
.Dt ARM32_DRAIN_WRITEBUF 2
.Os NetBSD
.Sh NAME
.Nm arm32_drain_writebuf
.Nd drains the cpu write buffer
.Sh SYNOPSIS
.Fd #include <machine/sysarch.h>
.Ft int
.Fn arm32_drain_writebuf
.Sh DESCRIPTION
.Fn arm32_drain_writebuf
will make sure that all the entries in the processor write buffer are
written out to memory.
.Pp
Not all processors support this operation (currently only the SA110).
Those processes that do not treat this function as a null-op.
.Sh ERRORS
.Fn arm32_drain_writebuf
will never fail so will always return 0.
.Sh REFERENCES
StrongARM Data Sheet