?? io.h
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/***************************************** Copyright (c) 2001-2002 Sigma Designs, Inc. All Rights Reserved Proprietary and Confidential *****************************************//* This file is part of the boot loader *//* * io.h * * Raw I/O * * first revision by Ho Lee 10/31/2002 */#ifndef __BOOTLOADER_IO_H#define __BOOTLOADER_IO_H#define mb() __asm__ __volatile__ ("" : : : "memory")//// RAW I/O//static __inline__ unsigned char __raw_readb(unsigned int addr){ volatile unsigned char *ptr = (volatile unsigned char *) (addr); return *ptr;}static __inline__ unsigned short __raw_readw(unsigned int addr){ volatile unsigned short *ptr = (volatile unsigned short *) (addr); return *ptr;}static __inline__ unsigned int __raw_readl(unsigned int addr){ volatile unsigned int *ptr = (volatile unsigned int *) (addr); return *ptr;}static __inline__ void __raw_writeb(unsigned int data, unsigned int addr){ volatile unsigned char *ptr = (volatile unsigned char *) (addr); *ptr = (unsigned char) data;}static __inline__ void __raw_writew(unsigned int data, unsigned int addr){ volatile unsigned short *ptr = (volatile unsigned short *) (addr); *ptr = (unsigned short) data;}static __inline__ void __raw_writel(unsigned int data, unsigned int addr){ volatile unsigned int *ptr = (volatile unsigned int *) (addr); *ptr = data;}#endif?? 快捷鍵說明
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