1 files changed, 103 insertions, 0 deletions
diff --git a/sys/contrib/openzfs/lib/libspl/include/os/linux/sys/sysmacros.h b/sys/contrib/openzfs/lib/libspl/include/os/linux/sys/sysmacros.h
new file mode 100644
index 000000000000..22fcb04b94e0
--- /dev/null
+++ b/sys/contrib/openzfs/lib/libspl/include/os/linux/sys/sysmacros.h
@@ -0,0 +1,103 @@
+/*
+ * CDDL HEADER START
+ *
+ * The contents of this file are subject to the terms of the
+ * Common Development and Distribution License, Version 1.0 only
+ * (the "License").  You may not use this file except in compliance
+ * with the License.
+ *
+ * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE
+ * or http://www.opensolaris.org/os/licensing.
+ * See the License for the specific language governing permissions
+ * and limitations under the License.
+ *
+ * When distributing Covered Code, include this CDDL HEADER in each
+ * file and include the License file at usr/src/OPENSOLARIS.LICENSE.
+ * If applicable, add the following below this CDDL HEADER, with the
+ * fields enclosed by brackets "[]" replaced with your own identifying
+ * information: Portions Copyright [yyyy] [name of copyright owner]
+ *
+ * CDDL HEADER END
+ */
+/*
+ * Copyright 2007 Sun Microsystems, Inc.  All rights reserved.
+ * Use is subject to license terms.
+ */
+
+#ifndef _LIBSPL_SYS_SYSMACROS_H
+#define	_LIBSPL_SYS_SYSMACROS_H
+
+#include_next <sys/sysmacros.h>
+
+/* common macros */
+#ifndef MIN
+#define	MIN(a, b)	((a) < (b) ? (a) : (b))
+#endif
+#ifndef MAX
+#define	MAX(a, b)	((a) < (b) ? (b) : (a))
+#endif
+#ifndef ABS
+#define	ABS(a)		((a) < 0 ? -(a) : (a))
+#endif
+#ifndef ARRAY_SIZE
+#define	ARRAY_SIZE(a) (sizeof (a) / sizeof (a[0]))
+#endif
+#ifndef	DIV_ROUND_UP
+#define	DIV_ROUND_UP(n, d)	(((n) + (d) - 1) / (d))
+#endif
+
+#define	makedevice(maj, min)	makedev(maj, min)
+#define	_sysconf(a)		sysconf(a)
+
+/*
+ * Compatibility macros/typedefs needed for Solaris -> Linux port
+ */
+#define	P2ALIGN(x, align)	((x) & -(align))
+#define	P2CROSS(x, y, align)	(((x) ^ (y)) > (align) - 1)
+#define	P2ROUNDUP(x, align)	((((x) - 1) | ((align) - 1)) + 1)
+#define	P2BOUNDARY(off, len, align) \
+				(((off) ^ ((off) + (len) - 1)) > (align) - 1)
+#define	P2PHASE(x, align)	((x) & ((align) - 1))
+#define	P2NPHASE(x, align)	(-(x) & ((align) - 1))
+#define	P2NPHASE_TYPED(x, align, type) \
+				(-(type)(x) & ((type)(align) - 1))
+#define	ISP2(x)			(((x) & ((x) - 1)) == 0)
+#define	IS_P2ALIGNED(v, a)	((((uintptr_t)(v)) & ((uintptr_t)(a) - 1)) == 0)
+
+/*
+ * Typed version of the P2* macros.  These macros should be used to ensure
+ * that the result is correctly calculated based on the data type of (x),
+ * which is passed in as the last argument, regardless of the data
+ * type of the alignment.  For example, if (x) is of type uint64_t,
+ * and we want to round it up to a page boundary using "PAGESIZE" as
+ * the alignment, we can do either
+ *      P2ROUNDUP(x, (uint64_t)PAGESIZE)
+ * or
+ *      P2ROUNDUP_TYPED(x, PAGESIZE, uint64_t)
+ */
+#define	P2ALIGN_TYPED(x, align, type)		\
+	((type)(x) & -(type)(align))
+#define	P2PHASE_TYPED(x, align, type)		\
+	((type)(x) & ((type)(align) - 1))
+#define	P2NPHASE_TYPED(x, align, type)		\
+	(-(type)(x) & ((type)(align) - 1))
+#define	P2ROUNDUP_TYPED(x, align, type)		\
+	((((type)(x) - 1) | ((type)(align) - 1)) + 1)
+#define	P2END_TYPED(x, align, type)		\
+	(-(~(type)(x) & -(type)(align)))
+#define	P2PHASEUP_TYPED(x, align, phase, type)	\
+	((type)(phase) - (((type)(phase) - (type)(x)) & -(type)(align)))
+#define	P2CROSS_TYPED(x, y, align, type)	\
+	(((type)(x) ^ (type)(y)) > (type)(align) - 1)
+#define	P2SAMEHIGHBIT_TYPED(x, y, type)		\
+	(((type)(x) ^ (type)(y)) < ((type)(x) & (type)(y)))
+
+
+/* avoid any possibility of clashing with <stddef.h> version */
+#if defined(_KERNEL) && !defined(_KMEMUSER) && !defined(offsetof)
+#define	offsetof(s, m)	((size_t)(&(((s *)0)->m)))
+#endif
+
+#define	_NOTE(x)
+
+#endif /* _LIBSPL_SYS_SYSMACROS_H */