cyg_type.h

eCos/RedBoot for勤研ARM AnywhereII(4510) 含全部源代码

#ifndef CYGONCE_INFRA_CYG_TYPE_H
#define CYGONCE_INFRA_CYG_TYPE_H

//==========================================================================
//
//      cyg_type.h
//
//      Standard types, and some useful coding macros.
//
//==========================================================================
//####ECOSGPLCOPYRIGHTBEGIN####
// -------------------------------------------
// This file is part of eCos, the Embedded Configurable Operating System.
// Copyright (C) 1998, 1999, 2000, 2001, 2002 Red Hat, Inc.
//
// eCos is free software; you can redistribute it and/or modify it under
// the terms of the GNU General Public License as published by the Free
// Software Foundation; either version 2 or (at your option) any later version.
//
// eCos 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.  See the GNU General Public License
// for more details.
//
// You should have received a copy of the GNU General Public License along
// with eCos; if not, write to the Free Software Foundation, Inc.,
// 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA.
//
// As a special exception, if other files instantiate templates or use macros
// or inline functions from this file, or you compile this file and link it
// with other works to produce a work based on this file, this file does not
// by itself cause the resulting work to be covered by the GNU General Public
// License. However the source code for this file must still be made available
// in accordance with section (3) of the GNU General Public License.
//
// This exception does not invalidate any other reasons why a work based on
// this file might be covered by the GNU General Public License.
//
// Alternative licenses for eCos may be arranged by contacting Red Hat, Inc.
// at http://sources.redhat.com/ecos/ecos-license/
// -------------------------------------------
//####ECOSGPLCOPYRIGHTEND####
//==========================================================================
//#####DESCRIPTIONBEGIN####
//
// Author(s):   nickg from an original by hmt
// Contributors:  nickg
// Date:        1997-09-08
// Purpose:     share unambiguously sized types.
// Description: we typedef [cyg_][u]int8,16,32 &c for general use.
// Usage:       #include "cyg/infra/cyg_type.h"
//              ...
//              cyg_int32 my_32bit_integer;
//              
//####DESCRIPTIONEND####
//

#include <stddef.h>           // Definition of NULL from the compiler

// -------------------------------------------------------------------------
// Some useful macros. These are defined here by default.

// __externC is used in mixed C/C++ headers to force C linkage on an external
// definition. It avoids having to put all sorts of ifdefs in.

#ifdef __cplusplus
# define __externC extern "C"
#else
# define __externC extern
#endif
// Also define externC for now - but it is deprecated
#define externC __externC

// -------------------------------------------------------------------------
// The header <basetype.h> defines the base types used here. It is
// supplied either by the target architecture HAL, or by the host
// porting kit. They are all defined as macros, and only those that
// make choices other than the defaults given below need be defined.

#define CYG_LSBFIRST 1234
#define CYG_MSBFIRST 4321

#include <cyg/hal/basetype.h>

#if (CYG_BYTEORDER != CYG_LSBFIRST) && (CYG_BYTEORDER != CYG_MSBFIRST)
# error You must define CYG_BYTEORDER to equal CYG_LSBFIRST or CYG_MSBFIRST
#endif

#ifndef CYG_DOUBLE_BYTEORDER
#define CYG_DOUBLE_BYTEORDER CYG_BYTEORDER
#endif

#ifndef cyg_halint8
# define cyg_halint8 char
#endif
#ifndef cyg_halint16
# define cyg_halint16 short
#endif
#ifndef cyg_halint32
# define cyg_halint32 int
#endif
#ifndef cyg_halint64
# define cyg_halint64 long long
#endif

#ifndef cyg_halcount8
# define cyg_halcount8 int
#endif
#ifndef cyg_halcount16
# define cyg_halcount16 int
#endif
#ifndef cyg_halcount32
# define cyg_halcount32 int
#endif
#ifndef cyg_halcount64
# define cyg_halcount64 long long
#endif

#ifndef cyg_haladdress
# define cyg_haladdress cyg_uint32
#endif
#ifndef cyg_haladdrword
# define cyg_haladdrword cyg_uint32
#endif

#ifndef cyg_halbool
# define cyg_halbool int
#endif

#ifndef cyg_halatomic
# define cyg_halatomic cyg_halint8
#endif

// -------------------------------------------------------------------------
// Provide a default architecture alignment
// This may be overridden in basetype.h if necessary.
// These should be straightforward numbers to allow use in assembly.

#ifndef CYGARC_ALIGNMENT
# define CYGARC_ALIGNMENT 8
#endif
// And corresponding power of two alignment
#ifndef CYGARC_P2ALIGNMENT
# define CYGARC_P2ALIGNMENT 3
#endif
#if (CYGARC_ALIGNMENT) != (1 << CYGARC_P2ALIGNMENT)
# error "Inconsistent CYGARC_ALIGNMENT and CYGARC_P2ALIGNMENT values"
#endif

// -------------------------------------------------------------------------
// The obvious few that compilers may define for you.
// But in case they don't:

#ifndef NULL
# define NULL 0
#endif

#ifndef __cplusplus

typedef cyg_halbool bool;

# ifndef false
#  define false 0
# endif

# ifndef true
#  define true (!false)
# endif

#endif

// -------------------------------------------------------------------------
// Allow creation of procedure-like macros that are a single statement,
// and must be followed by a semi-colon

#define CYG_MACRO_START do {
#define CYG_MACRO_END   } while (0)

#define CYG_EMPTY_STATEMENT CYG_MACRO_START CYG_MACRO_END

#define CYG_UNUSED_PARAM( _type_, _name_ ) CYG_MACRO_START      \
  _type_ __tmp1 = (_name_);                                     \
  _type_ __tmp2 = __tmp1;                                       \
  __tmp1 = __tmp2;                                              \
CYG_MACRO_END


// -------------------------------------------------------------------------
// Reference a symbol without explicitly making use of it. Ensures that
// the object containing the symbol will be included when linking.

#define CYG_REFERENCE_OBJECT(__object__)                                 \
     CYG_MACRO_START                                                     \
     static void *__cygvar_discard_me__ __attribute__ ((unused)) =       \
                                                          &(__object__); \
     CYG_MACRO_END

// -------------------------------------------------------------------------
// Define basic types for using integers in memory and structures;
// depends on compiler defaults and CPU type.

typedef unsigned cyg_halint8    cyg_uint8  ;
typedef   signed cyg_halint8    cyg_int8   ;

typedef unsigned cyg_halint16   cyg_uint16 ;
typedef   signed cyg_halint16   cyg_int16  ;

typedef unsigned cyg_halint32   cyg_uint32 ;
typedef   signed cyg_halint32   cyg_int32  ;

typedef unsigned cyg_halint64   cyg_uint64 ;
typedef   signed cyg_halint64   cyg_int64  ;

typedef  cyg_halbool            cyg_bool   ;

// -------------------------------------------------------------------------
// Define types for using integers in registers for looping and the like;
// depends on CPU type, choose what it is most comfortable with, with at
// least the range required.

typedef unsigned cyg_halcount8  cyg_ucount8  ;
typedef   signed cyg_halcount8  cyg_count8   ;

typedef unsigned cyg_halcount16 cyg_ucount16 ;