Mercurial > ecos-v2_0-branch
diff packages/language/c/libc/string/current/include/stringsupp.hxx @ 115:6ed91473a1cd ecos-sw-2000-08-21
Merge from eCos master repository on 2000-08-21-22:40:54-BST
| author | jlarmour |
|---|---|
| date | Fri, 25 Aug 2000 17:32:38 +0000 |
| parents | |
| children | e0c0827131d1 |
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new file mode 100644 --- /dev/null +++ b/packages/language/c/libc/string/current/include/stringsupp.hxx @@ -0,0 +1,205 @@ +#ifndef CYGONCE_LIBC_STRING_STRINGSUPP_HXX +#define CYGONCE_LIBC_STRING_STRINGSUPP_HXX +//=========================================================================== +// +// stringsupp.hxx +// +// Support for the ANSI standard string functions +// +//=========================================================================== +//####COPYRIGHTBEGIN#### +// +// ------------------------------------------- +// The contents of this file are subject to the Red Hat eCos Public License +// Version 1.1 (the "License"); you may not use this file except in +// compliance with the License. You may obtain a copy of the License at +// http://www.redhat.com/ +// +// Software distributed under the License is distributed on an "AS IS" +// basis, WITHOUT WARRANTY OF ANY KIND, either express or implied. See the +// License for the specific language governing rights and limitations under +// the License. +// +// The Original Code is eCos - Embedded Configurable Operating System, +// released September 30, 1998. +// +// The Initial Developer of the Original Code is Red Hat. +// Portions created by Red Hat are +// Copyright (C) 1998, 1999, 2000 Red Hat, Inc. +// All Rights Reserved. +// ------------------------------------------- +// +//####COPYRIGHTEND#### +//=========================================================================== +//#####DESCRIPTIONBEGIN#### +// +// Author(s): jlarmour +// Contributors: jlarmour +// Date: 2000-04-14 +// Purpose: Internal support for the libc string function implementations +// Description: +// Usage: +// +//####DESCRIPTIONEND#### +// +//=========================================================================== + +// CONFIGURATION + +#include <pkgconf/libc_string.h> // Configuration header + +// INCLUDES + +#include <cyg/infra/cyg_type.h> // Common type definitions +#include <stddef.h> // 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
