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#ifndef CYGONCE_LIBC_STRING_STRINGSUPP_HXX

#define CYGONCE_LIBC_STRING_STRINGSUPP_HXX

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

//

//      stringsupp.hxx

//

//      Support for the ANSI standard string functions

//

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

//####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):     jlarmour

// Contributors:  jlarmour

// Date:          2000-04-14

// Purpose:       Internal support for the libc string function implementations

// Description:

// Usage:

//

//####DESCRIPTIONEND####

//

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

// CONFIGURATION

#include    // Configuration header

// INCLUDES

#include  // Common type definitions

#include              // Compiler definitions such as

                                // size_t, NULL etc.

// CONSTANTS

#ifndef CYGIMP_LIBC_STRING_PREFER_SMALL_TO_FAST

// Masks for CYG_LIBC_STR_DETECTNULL below

externC const cyg_uint64 Cyg_libc_str_null_mask_1;

externC const cyg_uint64 Cyg_libc_str_null_mask_2;

#endif

// MACROS

// Nonzero if X is not aligned on a word boundary.

#define CYG_LIBC_STR_UNALIGNED(X) ((CYG_WORD)(X) & (sizeof (CYG_WORD) - 1))

// Nonzero if either X or Y is not aligned on a word boundary.

#define CYG_LIBC_STR_UNALIGNED2(X , Y) \

    (((CYG_WORD)(X) & (sizeof (CYG_WORD) - 1)) | \

     ((CYG_WORD)(Y) & (sizeof (CYG_WORD) - 1)))

// Nonzero if any byte of X contains a NULL.

#define CYG_LIBC_STR_DETECTNULL(X) \

    (((X) - (CYG_WORD)Cyg_libc_str_null_mask_1) & \

     ~(X) & (CYG_WORD)Cyg_libc_str_null_mask_2)

// How many bytes are copied each iteration of the 4X unrolled loop in the

// optimised string implementations

#define CYG_LIBC_STR_OPT_BIGBLOCKSIZE     (sizeof(CYG_WORD) << 2)

// How many bytes are copied each iteration of the word copy loop in the

// optimised string implementations

#define CYG_LIBC_STR_OPT_LITTLEBLOCKSIZE  (sizeof (CYG_WORD))

// Threshold for punting to the byte copier in the optimised string

// implementations

#define CYG_LIBC_STR_OPT_TOO_SMALL(LEN) \

    ((LEN) < CYG_LIBC_STR_OPT_LITTLEBLOCKSIZE)

// FUNCTION PROTOTYPES

// These are function prototypes for the aliased functions that actually

// implement the string functions

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

// 7.11.2 Copying functions

externC void *

__memmove( void *, const void *, size_t );

externC char *

__strcpy( char *, const char * );

externC char *

__strncpy( char *, const char *, size_t );

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

// 7.11.3 Concatenation functions

externC char *

__strcat( char *, const char * );

externC char *

__strncat( char *, const char *, size_t );

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

// 7.11.4 Comparison functions

externC int

__memcmp( const void *, const void *, size_t );

externC int

__strcmp( const char *, const char * );

externC int

__strcoll( const char *, const char * );

externC int

__strncmp( const char *, const char *, size_t );

externC size_t

__strxfrm( char *, const char *, size_t );

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

// 7.11.5 Search functions

externC void *

__memchr( const void *, int , size_t );

externC char *

__strchr( const char *, int );

externC size_t

__strcspn( const char *, const char * );

externC char *

__strpbrk( const char *, const char * );

externC char *

__strrchr( const char *, int );

externC size_t

__strspn( const char *, const char * );

externC char *

__strstr( const char *, const char * );

externC char *

__strtok( char *, const char * );

// For POSIX 1003.1 section 8.3.3 strtok_r()

externC char *

__strtok_r( char *, const char *, char ** );

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

// 7.11.6 Miscellaneous functions

externC size_t

__strlen( const char * );

#endif // CYGONCE_LIBC_STRING_STRINGSUPP_HXX multiple inclusion protection

// EOF stringsupp.hxx