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annotate packages/language/c/libc/current/src/clibincl/stringsupp.hxx @ 66:bf00f99aec69 ecos-sw-2000-02-02
Merge from eCos master repository on 2000-02-02-19:16:44-GMT
| author | jlarmour |
|---|---|
| date | Wed, 02 Feb 2000 19:57:02 +0000 |
| parents | c38311975d4f |
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| rev | line source |
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| 0 | 1 #ifndef CYGONCE_LIBC_CLIBINCL_STRINGSUPP_HXX |
| 2 #define CYGONCE_LIBC_CLIBINCL_STRINGSUPP_HXX | |
| 3 //=========================================================================== | |
| 4 // | |
| 5 // stringsupp.hxx | |
| 6 // | |
| 7 // Support for the ANSI standard string functions | |
| 8 // | |
| 9 //=========================================================================== | |
| 10 //####COPYRIGHTBEGIN#### | |
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11 // |
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12 // ------------------------------------------- |
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13 // The contents of this file are subject to the Red Hat eCos Public License |
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14 // Version 1.1 (the "License"); you may not use this file except in |
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15 // compliance with the License. You may obtain a copy of the License at |
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16 // http://www.redhat.com/ |
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17 // |
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18 // Software distributed under the License is distributed on an "AS IS" |
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19 // basis, WITHOUT WARRANTY OF ANY KIND, either express or implied. See the |
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20 // License for the specific language governing rights and limitations under |
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21 // the License. |
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22 // |
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23 // The Original Code is eCos - Embedded Configurable Operating System, |
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24 // released September 30, 1998. |
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25 // |
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26 // The Initial Developer of the Original Code is Red Hat. |
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27 // Portions created by Red Hat are |
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28 // Copyright (C) 1998, 1999, 2000 Red Hat, Inc. |
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29 // All Rights Reserved. |
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30 // ------------------------------------------- |
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31 // |
| 0 | 32 //####COPYRIGHTEND#### |
| 33 //=========================================================================== | |
| 34 //#####DESCRIPTIONBEGIN#### | |
| 35 // | |
| 36 // Author(s): jlarmour | |
| 2 | 37 // Contributors: jlarmour |
| 0 | 38 // Date: 1998-02-13 |
| 39 // Purpose: | |
| 40 // Description: | |
| 41 // Usage: | |
| 42 // | |
| 43 //####DESCRIPTIONEND#### | |
| 44 // | |
| 45 //=========================================================================== | |
| 46 | |
| 47 // CONFIGURATION | |
| 48 | |
| 49 #include <pkgconf/libc.h> // Configuration header | |
| 50 | |
| 51 // Include the C library? | |
| 52 #ifdef CYGPKG_LIBC | |
| 53 | |
| 54 // INCLUDES | |
| 55 | |
| 56 #include <cyg/infra/cyg_type.h> // Common type definitions | |
| 57 #include <stddef.h> // Compiler definitions such as | |
| 58 // size_t, NULL etc. | |
| 59 | |
| 60 // CONSTANTS | |
| 61 | |
| 62 #ifndef CYGIMP_LIBC_STRING_PREFER_SMALL_TO_FAST | |
| 63 | |
| 64 // Masks for CYG_LIBC_STR_DETECTNULL below | |
| 65 externC const cyg_uint64 Cyg_libc_str_null_mask_1; | |
| 66 externC const cyg_uint64 Cyg_libc_str_null_mask_2; | |
| 67 | |
| 68 #endif | |
| 69 | |
| 70 // MACROS | |
| 71 | |
| 72 // Nonzero if X is not aligned on a word boundary. | |
| 73 #define CYG_LIBC_STR_UNALIGNED(X) ((CYG_WORD)(X) & (sizeof (CYG_WORD) - 1)) | |
| 74 | |
| 75 // Nonzero if either X or Y is not aligned on a word boundary. | |
| 76 #define CYG_LIBC_STR_UNALIGNED2(X , Y) \ | |
| 77 (((CYG_WORD)(X) & (sizeof (CYG_WORD) - 1)) | \ | |
| 78 ((CYG_WORD)(Y) & (sizeof (CYG_WORD) - 1))) | |
| 79 | |
| 80 // Nonzero if any byte of X contains a NULL. | |
| 81 #define CYG_LIBC_STR_DETECTNULL(X) \ | |
| 82 (((X) - (CYG_WORD)Cyg_libc_str_null_mask_1) & \ | |
| 83 ~(X) & (CYG_WORD)Cyg_libc_str_null_mask_2) | |
| 84 | |
| 85 // How many bytes are copied each iteration of the 4X unrolled loop in the | |
| 86 // optimised string implementations | |
| 87 #define CYG_LIBC_STR_OPT_BIGBLOCKSIZE (sizeof(CYG_WORD) << 2) | |
| 88 | |
| 89 // How many bytes are copied each iteration of the word copy loop in the | |
| 90 // optimised string implementations | |
| 91 #define CYG_LIBC_STR_OPT_LITTLEBLOCKSIZE (sizeof (CYG_WORD)) | |
| 92 | |
| 93 // Threshold for punting to the byte copier in the optimised string | |
| 94 // implementations | |
| 95 #define CYG_LIBC_STR_OPT_TOO_SMALL(LEN) \ | |
| 96 ((LEN) < CYG_LIBC_STR_OPT_LITTLEBLOCKSIZE) | |
| 97 | |
| 98 | |
| 99 // FUNCTION PROTOTYPES | |
| 100 | |
| 101 // These are function prototypes for the aliased functions that actually | |
| 102 // implement the string functions | |
| 103 | |
| 104 //=========================================================================== | |
| 105 | |
| 106 // 7.11.2 Copying functions | |
| 107 | |
| 108 | |
| 109 | |
| 110 // memcpy is no longer implemented in the C library. It is now in the kernel | |
| 111 // However, the prototype is retained for consistency | |
| 112 | |
| 113 externC void * | |
| 114 _memcpy( void *, const void *, size_t ); | |
| 115 | |
| 116 | |
| 117 externC void * | |
| 118 _memmove( void *, const void *, size_t ); | |
| 119 | |
| 120 | |
| 121 externC char * | |
| 122 _strcpy( char *, const char * ); | |
| 123 | |
| 124 | |
| 125 externC char * | |
| 126 _strncpy( char *, const char *, size_t ); | |
| 127 | |
| 128 | |
| 129 //=========================================================================== | |
| 130 | |
| 131 // 7.11.3 Concatenation functions | |
| 132 | |
| 133 | |
| 134 externC char * | |
| 135 _strcat( char *, const char * ); | |
| 136 | |
| 137 | |
| 138 externC char * | |
| 139 _strncat( char *, const char *, size_t ); | |
| 140 | |
| 141 | |
| 142 //=========================================================================== | |
| 143 | |
| 144 // 7.11.4 Comparison functions | |
| 145 | |
| 146 externC int | |
| 147 _memcmp( const void *, const void *, size_t ); | |
| 148 | |
| 149 | |
| 150 externC int | |
| 151 _strcmp( const char *, const char * ); | |
| 152 | |
| 153 | |
| 154 externC int | |
| 155 _strcoll( const char *, const char * ); | |
| 156 | |
| 157 | |
| 158 externC int | |
| 159 _strncmp( const char *, const char *, size_t ); | |
| 160 | |
| 161 | |
| 162 externC size_t | |
| 163 _strxfrm( char *, const char *, size_t ); | |
| 164 | |
| 165 | |
| 166 //=========================================================================== | |
| 167 | |
| 168 // 7.11.5 Search functions | |
| 169 | |
| 170 | |
| 171 externC void * | |
| 172 _memchr( const void *, int , size_t ); | |
| 173 | |
| 174 | |
| 175 externC char * | |
| 176 _strchr( const char *, int ); | |
| 177 | |
| 178 | |
| 179 externC size_t | |
| 180 _strcspn( const char *, const char * ); | |
| 181 | |
| 182 | |
| 183 externC char * | |
| 184 _strpbrk( const char *, const char * ); | |
| 185 | |
| 186 | |
| 187 externC char * | |
| 188 _strrchr( const char *, int ); | |
| 189 | |
| 190 | |
| 191 externC size_t | |
| 192 _strspn( const char *, const char * ); | |
| 193 | |
| 194 | |
| 195 externC char * | |
| 196 _strstr( const char *, const char * ); | |
| 197 | |
| 198 | |
| 199 externC char * | |
| 200 _strtok( char *, const char * ); | |
| 201 | |
| 202 // For POSIX 1003.1 section 8.3.3 strtok_r() | |
| 203 | |
| 204 externC char * | |
| 205 _strtok_r( char *, const char *, char ** ); | |
| 206 | |
| 207 | |
| 208 //=========================================================================== | |
| 209 | |
| 210 // 7.11.6 Miscellaneous functions | |
| 211 | |
| 212 // memset is no longer implemented in the C library. It is now in the kernel | |
| 213 // However, the prototype is retained for consistency | |
| 214 | |
| 215 externC void * | |
| 216 _memset( void *, int, size_t ); | |
| 217 | |
| 218 | |
| 219 // _strerror is no longer in the C library, but in the error package. But | |
| 220 // the prototype is still here for symmetry as _strerror is still present | |
| 221 externC char * | |
| 222 _strerror( int ); | |
| 223 | |
| 224 | |
| 225 externC size_t | |
| 226 _strlen( const char * ); | |
| 227 | |
| 228 #endif // ifdef CYGPKG_LIBC | |
| 229 | |
| 230 #endif // CYGONCE_LIBC_CLIBINCL_STRINGSUPP_HXX multiple inclusion protection | |
| 231 | |
| 232 // EOF stringsupp.hxx |