Subversion Repositories openrisc_2011-10-31

#ifndef CYGONCE_INFRA_CYG_TYPE_H

#define CYGONCE_INFRA_CYG_TYPE_H

//==========================================================================

//

//      cyg_type.h

//

//      Standard types, and some useful coding macros.

//

//==========================================================================

//####COPYRIGHTBEGIN####

//                                                                          

// ----------------------------------------------------------------------------

// Copyright (C) 1997, 1998, 1999, 2000 Red Hat, Inc.

//

// This file is part of the eCos host tools.

//

// This program 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 of the License, or (at your option) 

// any later version.

// 

// 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.  See the GNU General Public License for 

// more details.

// 

// You should have received a copy of the GNU General Public License along with

// this program; if not, write to the Free Software Foundation, Inc., 

// 59 Temple Place - Suite 330, Boston, MA  02111-1307, USA.

//

// ----------------------------------------------------------------------------

//                                                                          

//####COPYRIGHTEND####

//==========================================================================

//#####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

// -------------------------------------------------------------------------

// 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

# ifdef __cplusplus

#  define cyg_halbool bool

# else

#  define cyg_halbool int

# endif

#endif

#ifndef cyg_halatomic

# define cyg_halatomic cyg_halint8

#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 ;

typedef   signed cyg_halcount16 cyg_count16  ;

typedef unsigned cyg_halcount32 cyg_ucount32 ;

typedef   signed cyg_halcount32 cyg_count32  ;

typedef unsigned cyg_halcount64 cyg_ucount64 ;

typedef   signed cyg_halcount64 cyg_count64  ;

// -------------------------------------------------------------------------

// Define a type to be used for atomic accesses. This type is guaranteed

// to be read or written in a single uninterruptible operation. This type

// is at least a single byte.

typedef volatile unsigned cyg_halatomic  cyg_atomic;

typedef volatile unsigned cyg_halatomic  CYG_ATOMIC;

// -------------------------------------------------------------------------

// Define types for access plain, on-the-metal memory or devices.

typedef cyg_uint32  CYG_WORD;

typedef cyg_uint8   CYG_BYTE;

typedef cyg_uint16  CYG_WORD16;

typedef cyg_uint32  CYG_WORD32;

typedef cyg_uint64  CYG_WORD64;

typedef cyg_haladdress  CYG_ADDRESS;

typedef cyg_haladdrword CYG_ADDRWORD;

// -------------------------------------------------------------------------

// Constructor ordering macros.  These are added as annotations to all

// static objects to order the constuctors appropriately.

#if defined(__cplusplus) && defined(__GNUC__)

# define CYGBLD_ATTRIB_INIT_PRI( _pri_ ) __attribute__((init_priority(_pri_)))

#else

// FIXME: should maybe just bomb out if this is attempted anywhere else?

// Not sure

# define CYGBLD_ATTRIB_INIT_PRI( _pri_ )

#endif

// The following will be removed eventually as it doesn't allow the use of

// e.g. pri+5 format

#define CYG_INIT_PRIORITY( _pri_ ) CYGBLD_ATTRIB_INIT_PRI( CYG_INIT_##_pri_ )

#define CYGBLD_ATTRIB_INIT_BEFORE( _pri_ ) CYGBLD_ATTRIB_INIT_PRI(_pri_-100)

#define CYGBLD_ATTRIB_INIT_AFTER( _pri_ )  CYGBLD_ATTRIB_INIT_PRI(_pri_+100)

#define CYG_INIT_HAL                    10000

#define CYG_INIT_SCHEDULER              11000

#define CYG_INIT_INTERRUPTS             12000

#define CYG_INIT_DRIVERS                13000

#define CYG_INIT_CLOCK                  14000

#define CYG_INIT_IDLE_THREAD            15000

#define CYG_INIT_THREADS                16000

#define CYG_INIT_KERNEL                 40000

#define CYG_INIT_IO                     49000

#define CYG_INIT_LIBC                   50000

#define CYG_INIT_COMPAT                 55000

#define CYG_INIT_APPLICATION            60000

#define CYG_INIT_PREDEFAULT             65534

#define CYG_INIT_DEFAULT                65535

// -------------------------------------------------------------------------

// COMPILER-SPECIFIC STUFF

#ifdef __GNUC__

// Force a 'C' routine to be called like a 'C++' contructor

# define CYGBLD_ATTRIB_CONSTRUCTOR __attribute__((constructor))

// Define a compiler-specific rune for saying a function doesn't return

# define CYGBLD_ATTRIB_NORET __attribute__((noreturn))

// How to define weak symbols - this is only relevant for ELF and a.out,

// but that won't be a problem for eCos

# define CYGBLD_ATTRIB_WEAK __attribute__ ((weak))

// How to define alias to symbols. Just pass in the symbol itself, not

// the string name of the symbol

# define CYGBLD_ATTRIB_ALIAS(__symbol__) \

        __attribute__ ((alias (#__symbol__)))

// This effectively does the reverse of the previous macro. It defines

// a name that the attributed variable or function will actually have

// in assembler.

# define CYGBLD_ATTRIB_ASM_ALIAS(__symbol__) \

            __asm__ ( #__symbol__ )

// Shows that a function returns the same value when given the same args, but

// note this can't be used if there are pointer args

# define CYGBLD_ATTRIB_CONST __attribute__((const))

#else // non-GNU

# define CYGBLD_ATTRIB_CONSTRUCTOR

# define CYGBLD_ATTRIB_NORET

    // This intentionally gives an error only if we actually try to

    // use it.  #error would give an error if we simple can't.

# define CYGBLD_ATTRIB_WEAK !!!-- Attribute weak not defined --!!!

# define CYGBLD_ATTRIB_ALIAS(__x__) !!!-- Attribute alias not defined --!!!

# define CYGBLD_ATTRIB_ASM_ALIAS(__symbol__) !!!-- Asm alias not defined --!!!

# define CYGBLD_ATTRIB_CONST

#endif

// How to define weak aliases. Currently this is simply a mixture of the

// above

# define CYGBLD_ATTRIB_WEAK_ALIAS(__symbol__) \

        CYGBLD_ATTRIB_WEAK CYGBLD_ATTRIB_ALIAS(__symbol__)

// -------------------------------------------------------------------------

// Label name macro. Some toolsets generate labels with initial

// underscores and others don't. This macro should be used on labels

// that are defined in assembly code or linker scripts so that we can

// do the right thing.

#ifndef CYG_LABEL_NAME

#define CYG_LABEL_NAME(_name_) _name_

#endif

// -------------------------------------------------------------------------

// Various "flavours" of memory regions that can be described by the 

// Memory Layout Tool (MLT).

#define CYGMEM_REGION_ATTR_R  0x01  // Region can be read

#define CYGMEM_REGION_ATTR_W  0x02  // Region can be written

// -------------------------------------------------------------------------

#endif // CYGONCE_INFRA_CYG_TYPE_H multiple inclusion protection

// EOF cyg_type.h