X-Git-Url: https://git.saurik.com/apple/xnu.git/blobdiff_plain/8f6c56a50524aa785f7e596d52dddfb331e18961..4a3eedf9ecc9bbe3f3a5c6ce5e53ad199d639d32:/bsd/libkern/libkern.h?ds=inline

diff --git a/bsd/libkern/libkern.h b/bsd/libkern/libkern.h
index 6ab2b9201..81b719c2e 100644
--- a/bsd/libkern/libkern.h
+++ b/bsd/libkern/libkern.h
@@ -1,5 +1,5 @@
 /*
- * Copyright (c) 2000-2004 Apple Computer, Inc. All rights reserved.
+ * Copyright (c) 2000-2006 Apple Computer, Inc. All rights reserved.
  *
  * @APPLE_OSREFERENCE_LICENSE_HEADER_START@
  * 
@@ -59,12 +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 <sys/appleapiopts.h>
 #include <stdint.h>
+#include <stdarg.h>	/* for platform-specific va_list */
 #include <string.h>
 #include <sys/cdefs.h>
 #include <sys/types.h>
@@ -127,6 +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);
@@ -138,11 +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 *, ...) __printflike(3,4);
 
-int	snprintf(char *, size_t, const char *, ...);
-int	sprintf(char *bufp, const char *, ...);
-int	sscanf(const char *, char const *, ...);
-void printf(const char *, ...);
+/* 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);
 
@@ -152,15 +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_ */