2.3-InternetRadio/nutos/nut/include/arch/avr32.h

#ifndef _ARCH_AVR32_H_
#define _ARCH_AVR32_H_

/*!
 * Copyright (C) 2001-2010 by egnite Software GmbH
 *
 * All rights reserved.
 *
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions
 * are met:
 *
 * 1. Redistributions of source code must retain the above copyright
 *    notice, this list of conditions and the following disclaimer.
 * 2. Redistributions in binary form must reproduce the above copyright
 *    notice, this list of conditions and the following disclaimer in the
 *    documentation and/or other materials provided with the distribution.
 * 3. Neither the name of the copyright holders 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.
 *
 * For additional information see http://www.ethernut.de/
 *
 * Portions Copyright Atmel Corporation, see the following note.
 */

/*This file is prepared for Doxygen automatic documentation generation.*/
/*! \file *********************************************************************
 *
 * \brief Compiler file for AVR32.
 *
 * This file defines commonly used types and macros.
 *
 * - Compiler:           IAR EWAVR32 and GNU GCC for AVR32
 * - Supported devices:  All AVR32 devices can be used.
 * - AppNote:
 *
 * \author               Atmel Corporation: http://www.atmel.com \n
 *                       Support and FAQ: http://support.atmel.no/
 *
 ******************************************************************************/

/* Copyright (c) 2009 Atmel Corporation. All rights reserved.
 *
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions are met:
 *
 * 1. Redistributions of source code must retain the above copyright notice, this
 * list of conditions and the following disclaimer.
 *
 * 2. Redistributions in binary form must reproduce the above copyright notice,
 * this list of conditions and the following disclaimer in the documentation
 * and/or other materials provided with the distribution.
 *
 * 3. The name of Atmel may not be used to endorse or promote products derived
 * from this software without specific prior written permission.
 *
 * 4. This software may only be redistributed and used in connection with an Atmel
 * AVR product.
 *
 * THIS SOFTWARE IS PROVIDED BY ATMEL "AS IS" AND ANY EXPRESS OR IMPLIED
 * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
 * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT ARE
 * EXPRESSLY AND SPECIFICALLY DISCLAIMED. IN NO EVENT SHALL ATMEL 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
 *
 */

/*
* $Log: avr32.h,v $
*
*/

#include <cfg/arch.h>

/* AVR32 is big endian core */
#if !defined(__BIG_ENDIAN__)
#define __BIG_ENDIAN__
#endif

#ifdef __GNUC__
# define CONST      const
# define INLINE     inline
#else
# ifndef CONST
#  define CONST      const
# endif
# ifndef INLINE
#  define INLINE
# endif
#endif

#define PSTR(p)    (p)
#define PRG_RDB(p) (*((const char *)(p)))

#define prog_char  const char
#define PGM_P const char *

#define strlen_P(x)             strlen((char *)(x))
#define strcpy_P(x,y)           strcpy(x,(char *)(y))

#define strcmp_P(x, y)          strcmp((char *)(x), (char *)(y))
#define memcpy_P(x, y, z)       memcpy(x, y, z)

#define SIGNAL(x)  __attribute__((__interrupt__)) void x(void)

/* -------------------------------------------------------------------------
* redefine main
* ------------------------------------------------------------------------- */
#if !defined(__cplusplus)
# define main       NutAppMain
#endif

#define strlen_P(x)             strlen((char *)(x))
#define strcpy_P(x,y)           strcpy(x,(char *)(y))

#define strcmp_P(x, y)          strcmp((char *)(x), (char *)(y))
#define memcpy_P(x, y, z)       memcpy(x, y, z)

#ifndef __ASSEMBLER__
/*!
* \brief End of uninitialized data segment. Defined in the linker script.
*/
extern void *__bss_end;

#endif

#ifndef _NOP
# ifdef __GNUC__
#  define _NOP() __asm__ __volatile__ ("nop")
# else
#  define _NOP() asm("nop")
# endif
#endif

#define outb(_reg, _val)  (*((volatile unsigned char *)(_reg)) = (_val))
#define outw(_reg, _val)  (*((volatile unsigned short *)(_reg)) = (_val))
#define outr(_reg, _val)  (*((volatile unsigned long *)(_reg)) = (_val))

#define inb(_reg)   (*((volatile unsigned char *)(_reg)))
#define inw(_reg)   (*((volatile unsigned short *)(_reg)))
#define inr(_reg)   (*((volatile unsigned long *)(_reg)))

#define _BV(bit)    (1 << (bit))

#ifdef __IMAGECRAFT__
# define __attribute__(x)
#endif

#define _SFR_MEM8(addr)     (addr)
#define _SFR_MEM16(addr)    (addr)


/*! \brief Reads the bits of a value specified by a given bit-mask.
 *
 * \param value Value to read bits from.
 * \param mask  Bit-mask indicating bits to read.
 *
 * \return Read bits.
 */
#define Rd_bits( value, mask)        ((value) & (mask))

/*! \brief Tests the bits of a value specified by a given bit-mask.
 *
 * \param value Value of which to test bits.
 * \param mask  Bit-mask indicating bits to test.
 *
 * \return \c 1 if at least one of the tested bits is set, else \c 0.
 */
#define Tst_bits( value, mask)  (Rd_bits(value, mask) != 0)


/*!
 * \brief Gets the value of the \a sysreg system register.
 *
 * \param sysreg  Address of the system register of which to get the value.
 *
 * \return Value of the \a sysreg system register.
 */
#if __GNUC__
# define Get_system_register(sysreg)         __builtin_mfsr(sysreg)
#elif __ICCAVR32__
# define Get_system_register(sysreg)         __get_system_register(sysreg)
#endif

/*!
 * \brief Sets the value of the \a sysreg system register to \a value.
 *
 * \param sysreg  Address of the system register of which to set the value.
 * \param value   Value to set the \a sysreg system register to.
 */
#if __GNUC__
# define Set_system_register(sysreg, value)  __builtin_mtsr(sysreg, value)
#elif __ICCAVR32__
# define Set_system_register(sysreg, value)  __set_system_register(sysreg, value)
#endif

/*! \brief Tells whether interrupts are globally enabled.
 *
 * \return \c 1 if interrupts are globally enabled, else \c 0.
 */
#define Is_global_interrupt_enabled()        (!Tst_bits(Get_system_register(AVR32_SR), AVR32_SR_GM_MASK))

/*! \brief Disables interrupts globally.
 */
#if (defined __GNUC__)
  #define Disable_global_interrupt()          ({__asm__ __volatile__ ("ssrf\t%0" :  : "i" (AVR32_SR_GM_OFFSET));})
#elif (defined __ICCAVR32__)
  #define Disable_global_interrupt()          (__disable_interrupt())
#endif

/*! \brief Enables interrupts globally.
 */
#if (defined __GNUC__)
  #define Enable_global_interrupt()           ({__asm__ __volatile__ ("csrf\t%0" :  : "i" (AVR32_SR_GM_OFFSET));})
#elif (defined __ICCAVR32__)
  #define Enable_global_interrupt()           (__enable_interrupt())
#endif



#endif // _ARCH_AVR32_H_