|
[ source navigation ] [ diff markup ] [ identifier search ] [ general search ] |
|||
|
001 /* Copyright (C) 2003 The KOS Team 002 Copyright (C) 1999 Free Software Foundation 003 004 This program is free software; you can redistribute it and/or 005 modify it under the terms of the GNU General Public License 006 as published by the Free Software Foundation; either version 2 007 of the License, or (at your option) any later version. 008 009 This program is distributed in the hope that it will be useful, 010 but WITHOUT ANY WARRANTY; without even the implied warranty of 011 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the 012 GNU General Public License for more details. 013 014 You should have received a copy of the GNU General Public License 015 along with this program; if not, write to the Free Software 016 Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, 017 USA. 018 */ 019 #ifndef _SOS_KLIBC_H_ 020 #define _SOS_KLIBC_H_ 021 022 /** 023 * @file klibc.h 024 * 025 * Basic libc-style support for common useful functions (string.h, 026 * stdarg.h), some with slight non-standard behavior (see comments). 027 */ 028 029 #include <sos/types.h> 030 031 /* string.h functions */ 032 033 void *memcpy(void *dst, const void *src, register unsigned int size ) ; 034 void *memset(void *dst, register int c, register unsigned int length ) ; 035 int memcmp(const void *s1, const void *s2, sos_size_t n); 036 037 unsigned int strlen( register const char *str) ; 038 unsigned int strnlen(const char * s, sos_size_t maxlen); 039 040 /** 041 * @note Same as strncpy(), with a slightly different semantic. 042 * Actually, strncpy(3C) says " The result will not be null-terminated 043 * if the length of 'from' is n or more.". Here, 'dst' is ALWAYS 044 * null-terminated. And its total len will ALWAYS be <= len, with 045 * null-terminating-char included. 046 */ 047 char *strzcpy( register char *dst, register const char *src, 048 register int len ) ; 049 050 /** 051 * @note Same as strncat(), with the same semantic : 'dst' is ALWAYS 052 * null-terminated. And its total len will ALWAYS be <= len, with 053 * null-terminating-char included. 054 */ 055 char *strzcat (char *dest, const char *src, 056 const sos_size_t len); 057 058 int strcmp(register const char *s1, register const char *s2 ); 059 int strncmp(register const char *s1, register const char *s2, 060 register int len ); 061 062 /* Basic stdarg.h macros. Taken from gcc support files */ 063 #define __GNUC_VA_LIST 064 typedef void *__gnuc_va_list; 065 typedef __gnuc_va_list va_list; 066 #define __va_rounded_size(TYPE) \ 067 (((sizeof (TYPE) + sizeof (int) - 1) / sizeof (int)) * sizeof (int)) 068 #define va_start(AP, LASTARG) \ 069 (AP = ((__gnuc_va_list) __builtin_next_arg (LASTARG))) 070 #define va_end(AP) \ 071 ((void)0) 072 #define va_arg(AP, TYPE) \ 073 (AP = (__gnuc_va_list) ((char *) (AP) + __va_rounded_size (TYPE)), \ 074 *((TYPE *) (void *) ((char *) (AP) - __va_rounded_size (TYPE)))) 075 #define __va_copy(dest, src) \ 076 (dest) = (src) 077 078 /* stdarg.h functions. There might be a non-standard behavior: there 079 will always be a trailing '\0' in the resulting string */ 080 int vsnprintf(char *, sos_size_t, const char *, va_list); 081 int snprintf(char *, sos_size_t, const char *, /*args*/ ...) 082 __attribute__ ((format (printf, 3, 4))); 083 084 #endif /* _SOS_KLIBC_H_ */
[ source navigation ] | [ diff markup ] | [ identifier search ] | [ general search ] |