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[/] [openrisc/] [trunk/] [rtos/] [rtems/] [c/] [src/] [exec/] [score/] [cpu/] [sh/] [rtems/] [score/] [sh_io.h] - Rev 173
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/* * These are some macros to access memory mapped devices * on the SH7000-architecture. * * Inspired from the linux kernel's include/asm/io.h * * Authors: Ralf Corsepius (corsepiu@faw.uni-ulm.de) and * Bernd Becker (becker@faw.uni-ulm.de) * * COPYRIGHT (c) 1996-1998, FAW Ulm, Germany * * This program is distributed in the hope that it will be useful, * but WITHOUT ANY WARRANTY; without even the implied warranty of * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. * * * COPYRIGHT (c) 1998. * On-Line Applications Research Corporation (OAR). * Copyright assigned to U.S. Government, 1994. * * The license and distribution terms for this file may be * found in the file LICENSE in this distribution or at * http://www.OARcorp.com/rtems/license.html. * * $Id: sh_io.h,v 1.2 2001-09-27 11:59:30 chris Exp $ */ #ifndef _asm_io_h #define _asm_io_h #define readb(addr) (*(volatile unsigned char *) (addr)) #define readw(addr) (*(volatile unsigned short *) (addr)) #define readl(addr) (*(volatile unsigned int *) (addr)) #define read8(addr) (*(volatile unsigned8 *) (addr)) #define read16(addr) (*(volatile unsigned16 *) (addr)) #define read32(addr) (*(volatile unsigned32 *) (addr)) #define writeb(b,addr) ((*(volatile unsigned char *) (addr)) = (b)) #define writew(b,addr) ((*(volatile unsigned short *) (addr)) = (b)) #define writel(b,addr) ((*(volatile unsigned int *) (addr)) = (b)) #define write8(b,addr) ((*(volatile unsigned8 *) (addr)) = (b)) #define write16(b,addr) ((*(volatile unsigned16 *) (addr)) = (b)) #define write32(b,addr) ((*(volatile unsigned32 *) (addr)) = (b)) #define inb(addr) readb(addr) #define outb(b,addr) writeb(b,addr) #endif