X-Git-Url: https://git.saurik.com/apple/xnu.git/blobdiff_plain/378393581903b274cb7a4d18e0d978071a6b592d..e2fac8b15b12a7979f72090454d850e612fc5b13:/bsd/libkern/libkern.h diff --git a/bsd/libkern/libkern.h b/bsd/libkern/libkern.h index 6eee3e08c..81b719c2e 100644 --- a/bsd/libkern/libkern.h +++ b/bsd/libkern/libkern.h @@ -1,23 +1,29 @@ /* - * Copyright (c) 2000-2004 Apple Computer, Inc. All rights reserved. + * Copyright (c) 2000-2006 Apple Computer, Inc. All rights reserved. * - * @APPLE_LICENSE_HEADER_START@ + * @APPLE_OSREFERENCE_LICENSE_HEADER_START@ * - * The contents of this file constitute Original Code as defined in and - * are subject to the Apple Public Source License Version 1.1 (the - * "License"). You may not use this file except in compliance with the - * License. Please obtain a copy of the License at - * http://www.apple.com/publicsource and read it before using this file. + * This file contains Original Code and/or Modifications of Original Code + * as defined in and that are subject to the Apple Public Source License + * Version 2.0 (the 'License'). You may not use this file except in + * compliance with the License. The rights granted to you under the License + * may not be used to create, or enable the creation or redistribution of, + * unlawful or unlicensed copies of an Apple operating system, or to + * circumvent, violate, or enable the circumvention or violation of, any + * terms of an Apple operating system software license agreement. * - * This Original Code and all software distributed under the License are - * distributed on an "AS IS" basis, WITHOUT WARRANTY OF ANY KIND, EITHER + * Please obtain a copy of the License at + * http://www.opensource.apple.com/apsl/ and read it before using this file. + * + * The Original Code and all software distributed under the License are + * distributed on an 'AS IS' basis, WITHOUT WARRANTY OF ANY KIND, EITHER * EXPRESS OR IMPLIED, AND APPLE HEREBY DISCLAIMS ALL SUCH WARRANTIES, * INCLUDING WITHOUT LIMITATION, ANY WARRANTIES OF MERCHANTABILITY, - * FITNESS FOR A PARTICULAR PURPOSE OR NON-INFRINGEMENT. Please see the - * License for the specific language governing rights and limitations - * under the License. + * FITNESS FOR A PARTICULAR PURPOSE, QUIET ENJOYMENT OR NON-INFRINGEMENT. + * Please see the License for the specific language governing rights and + * limitations under the License. * - * @APPLE_LICENSE_HEADER_END@ + * @APPLE_OSREFERENCE_LICENSE_HEADER_END@ */ /*- * Copyright (c) 1992, 1993 @@ -53,12 +59,19 @@ * * @(#)libkern.h 8.1 (Berkeley) 6/10/93 */ +/* + * NOTICE: This file was modified by SPARTA, Inc. in 2005 to introduce + * support for mandatory and extensible security protections. This notice + * is included in support of clause 2.2 (b) of the Apple Public License, + * Version 2.0. + */ #ifndef _LIBKERN_LIBKERN_H_ #define _LIBKERN_LIBKERN_H_ #include #include +#include /* for platform-specific va_list */ #include #include #include @@ -121,6 +134,8 @@ ulmin(u_long a, u_long b) return (a < b ? a : b); } + + /* Prototypes for non-quad routines. */ extern int ffs(int); extern int locc(int, char *, u_int); @@ -132,11 +147,18 @@ extern long strtol(const char*, char **, int); extern u_long strtoul(const char *, char **, int); extern quad_t strtoq(const char *, char **, int); extern u_quad_t strtouq(const char *, char **, int); +extern char *strsep(char **stringp, const char *delim); -int snprintf(char *, size_t, const char *, ...); -int sprintf(char *bufp, const char *, ...); -int sscanf(const char *, char const *, ...); -void printf(const char *, ...); +int snprintf(char *, size_t, const char *, ...) __printflike(3,4); + +/* sprintf() is being deprecated. Please use snprintf() instead. */ +int sprintf(char *bufp, const char *, ...) __deprecated; +int sscanf(const char *, char const *, ...) __scanflike(2,3); +int printf(const char *, ...) __printflike(1,2); + +#if CONFIG_NO_PRINTF_STRINGS +#define printf(x, ...) do {} while (0) +#endif uint32_t crc32(uint32_t crc, const void *bufp, size_t len); @@ -146,15 +168,62 @@ int copyoutstr(const void *kaddr, user_addr_t udaddr, size_t len, size_t *done); int copyin(const user_addr_t uaddr, void *kaddr, size_t len); int copyout(const void *kaddr, user_addr_t udaddr, size_t len); -int vsscanf(const char *, char const *, __darwin_va_list); -extern int vsnprintf(char *, size_t, const char *, __darwin_va_list); -extern int vsprintf(char *bufp, const char *, __darwin_va_list); +int vsscanf(const char *, char const *, va_list); + +extern int vprintf(const char *, va_list); +extern int vsnprintf(char *, size_t, const char *, va_list); + +/* vsprintf() is being deprecated. Please use vsnprintf() instead. */ +extern int vsprintf(char *bufp, const char *, va_list) __deprecated; extern void invalidate_icache(vm_offset_t, unsigned, int); extern void flush_dcache(vm_offset_t, unsigned, int); extern void invalidate_icache64(addr64_t, unsigned, int); extern void flush_dcache64(addr64_t, unsigned, int); + +/* + * assembly versions of clz... ideally we would just call + * __builtin_clz(num), unfortunately this one is ill defined + * by gcc for num=0 + */ +static __inline__ unsigned int +clz(unsigned int num) +{ +#if __ppc__ + unsigned int result; + __asm__ volatile( + "cntlzw %0, %1" + : "=r" (result) + : "r" (num) + ); + return result; + +#elif __i386__ + unsigned int result; + __asm__ volatile( + "bsrl %1, %0\n\t" + "cmovel %2, %0" + : "=r" (result) + : "rm" (num), "r" (63) + ); + return 31 ^ result; + +#elif __arm__ && !__thumb__ && defined(_ARM_ARCH_5) + unsigned int result; + __asm__ volatile( + "clz %0, %1" + : "=r" (result) + : "r" (num) + ); + + return result; +#else + return num?__builtin_clz(num):__builtin_clz(0); +#endif +} + + __END_DECLS #endif /* _LIBKERN_LIBKERN_H_ */