library/amiga_beginio.c
/*
* $Id: amiga_beginio.c,v 1.5 2006-09-25 15:12:47 obarthel Exp $
*
* :ts=4
*
* Portable ISO 'C' (1994) runtime library for the Amiga computer
* Copyright (c) 2002-2015 by Olaf Barthel <obarthel (at) gmx.net>
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
*
* - Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
*
* - Neither the name of Olaf Barthel nor the names of contributors
* may be used to endorse or promote products derived from this
* software without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
* AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
* ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE
* LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
* CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
* SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
* INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
* CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
* ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
* POSSIBILITY OF SUCH DAMAGE.
*/
#include <exec/devices.h>
#include <exec/io.h>
#include <clib/alib_protos.h>
/****************************************************************************/
#include "debug.h"
/****************************************************************************/
#ifndef __PPC__
/****************************************************************************/
#if defined(__SASC)
VOID __begin_io(struct IORequest * ior);
#pragma libcall DeviceBase __begin_io 01e 901
#endif /* __SASC */
/****************************************************************************/
#if defined(__GNUC__)
#define __begin_io(ior) ({ \
struct IORequest * _BeginIO_ior = (ior); \
{ \
register struct Library * const __BeginIO__bn __asm("a6") = (struct Library *) (DeviceBase);\
register struct IORequest * __BeginIO_ior __asm("a1") = (_BeginIO_ior); \
__asm volatile ("jsr a6@(-30:W)" \
: \
: "r"(__BeginIO__bn), "r"(__BeginIO_ior) \
: "d0", "d1", "a0", "a1", "fp0", "fp1", "cc", "memory"); \
} \
})
#endif /* __GNUC__ */
/****************************************************************************/
VOID
BeginIO(struct IORequest *ior)
{
struct Device * DeviceBase;
ENTER();
assert( ior != NULL && ior->io_Device != NULL );
DeviceBase = ior->io_Device;
__begin_io(ior);
LEAVE();
}
/****************************************************************************/
#else
/****************************************************************************/
#include <proto/exec.h>
/****************************************************************************/
#if defined(BeginIO)
#undef BeginIO
#endif /* BeginIO */
/****************************************************************************/
VOID BeginIO(struct IORequest *ior);
/****************************************************************************/
VOID
BeginIO(struct IORequest *ior)
{
ENTER();
assert( ior != NULL && ior->io_Device != NULL );
IExec->BeginIO(ior);
LEAVE();
}
/****************************************************************************/
#endif /* __PPC__ */