mirror of
https://git.proxmox.com/git/mirror_zfs.git
synced 2024-11-18 02:20:59 +03:00
99 lines
3.5 KiB
C
99 lines
3.5 KiB
C
|
/*
|
||
|
|
* 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
|
||
|
|
|
||
|
|
#define makedevice(maj,min) makedev(maj,min)
|
||
|
|
#define _sysconf(a) sysconf(a)
|
||
|
|
#define __NORETURN __attribute__ ((noreturn))
|
||
|
|
|
||
|
|
/*
|
||
|
|
* 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) & -(align)))
|
||
|
|
#define P2ROUNDUP_TYPED(x, align, type) \
|
||
|
|
(-(-(type)(x) & -(type)(align)))
|
||
|
|
#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) & -(type)(align)))
|
||
|
|
#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
|
||
|
|
|
||
|
|
#endif /* _LIBSPL_SYS_SYSMACROS_H */
|