[mirror_spl-debian.git] / include / sys / sysmacros.h

/*****************************************************************************\
 *  Copyright (C) 2007-2010 Lawrence Livermore National Security, LLC.
 *  Copyright (C) 2007 The Regents of the University of California.
 *  Produced at Lawrence Livermore National Laboratory (cf, DISCLAIMER).
 *  Written by Brian Behlendorf <behlendorf1@llnl.gov>.
 *  UCRL-CODE-235197
 *
 *  This file is part of the SPL, Solaris Porting Layer.
 *  For details, see <http://github.com/behlendorf/spl/>.
 *
 *  The SPL is free software; you can redistribute it and/or modify it
 *  under the terms of the GNU General Public License as published by the
 *  Free Software Foundation; either version 2 of the License, or (at your
 *  option) any later version.
 *
 *  The SPL is distributed in the hope that it will be useful, but WITHOUT
 *  ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
 *  FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
 *  for more details.
 *
 *  You should have received a copy of the GNU General Public License along
 *  with the SPL.  If not, see <http://www.gnu.org/licenses/>.
\*****************************************************************************/

#ifndef _SPL_SYSMACROS_H
#define _SPL_SYSMACROS_H

#include <linux/module.h>
#include <sys/debug.h>
#include <sys/varargs.h>
#include <sys/zone.h>
#include <sys/signal.h>

#ifndef _KERNEL
#define _KERNEL                         __KERNEL__
#endif

#define FALSE				0
#define TRUE				1

#define INT32_MAX                       INT_MAX
#define INT32_MIN                       INT_MIN
#define UINT32_MAX			UINT_MAX
#define UINT32_MIN			UINT_MIN
#define INT64_MAX			LLONG_MAX
#define INT64_MIN			LLONG_MIN
#define UINT64_MAX                      ULLONG_MAX
#define UINT64_MIN			ULLONG_MIN

#define NBBY                            8
#define ENOTSUP                         ENOTSUPP

#define MAXMSGLEN			256
#define MAXNAMELEN                      256
#define MAXPATHLEN                      PATH_MAX

#ifdef _LP64
#define MAXOFFSET_T			0x7fffffffffffffffl
#else
#define MAXOFFSET_T			0x7fffffffl
#endif

#define MAXBSIZE			8192
#define DEV_BSIZE			512
#define DEV_BSHIFT			9 /* log2(DEV_BSIZE) */

#define curproc				current
#define proc_pageout			NULL
#define max_ncpus                       64
#define CPU_SEQID			smp_processor_id() /* I think... */
#define _NOTE(x)


#define RLIM64_INFINITY			RLIM_INFINITY

/* 0..MAX_PRIO-1:		Process priority
 * 0..MAX_RT_PRIO-1:		RT priority tasks
 * MAX_RT_PRIO..MAX_PRIO-1:	SCHED_NORMAL tasks
 *
 * Treat shim tasks as SCHED_NORMAL tasks
 */
#define minclsyspri                     (MAX_RT_PRIO)
#define maxclsyspri                     (MAX_PRIO-1)

#define NICE_TO_PRIO(nice)		(MAX_RT_PRIO + (nice) + 20)
#define PRIO_TO_NICE(prio)		((prio) - MAX_RT_PRIO - 20)

/* Missing macros
 */
#define PAGESIZE                        PAGE_SIZE

/* from Solaris sys/byteorder.h */
#define BSWAP_8(x)      ((x) & 0xff)
#define BSWAP_16(x)     ((BSWAP_8(x) << 8) | BSWAP_8((x) >> 8))
#define BSWAP_32(x)     ((BSWAP_16(x) << 16) | BSWAP_16((x) >> 16))
#define BSWAP_64(x)     ((BSWAP_32(x) << 32) | BSWAP_32((x) >> 32))

/* Map some simple functions.
 */
#define bzero(ptr,size)                 memset(ptr,0,size)
#define bcopy(src,dest,size)            memcpy(dest,src,size)
#define bcmp(src,dest,size)		memcmp((src), (dest), (size_t)(size))

/* Dtrace probes do not exist in the linux kernel */
#ifdef DTRACE_PROBE
#undef  DTRACE_PROBE
#endif  /* DTRACE_PROBE */
#define DTRACE_PROBE(a)					((void)0)

#ifdef DTRACE_PROBE1
#undef  DTRACE_PROBE1
#endif  /* DTRACE_PROBE1 */
#define DTRACE_PROBE1(a, b, c)				((void)0)

#ifdef DTRACE_PROBE2
#undef  DTRACE_PROBE2
#endif  /* DTRACE_PROBE2 */
#define DTRACE_PROBE2(a, b, c, d, e)			((void)0)

#ifdef DTRACE_PROBE3
#undef  DTRACE_PROBE3
#endif  /* DTRACE_PROBE3 */
#define DTRACE_PROBE3(a, b, c, d, e, f, g)		((void)0)

#ifdef DTRACE_PROBE4
#undef  DTRACE_PROBE4
#endif  /* DTRACE_PROBE4 */
#define DTRACE_PROBE4(a, b, c, d, e, f, g, h, i)	((void)0)

/* Missing globals */
extern char spl_version[16];
extern long spl_hostid;
extern char hw_serial[11];
extern int p0;

/* Missing misc functions */
extern int highbit(unsigned long i);
extern uint32_t zone_get_hostid(void *zone);
extern void spl_setup(void);
extern void spl_cleanup(void);

#define makedevice(maj,min) makedev(maj,min)

/* 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 DIV_ROUND_UP
#define DIV_ROUND_UP(n,d)	(((n) + (d) - 1) / (d))
#endif
#ifndef roundup
#define roundup(x, y)		((((x) + ((y) - 1)) / (y)) * (y))
#endif

/*
 * 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 P2PHASE(x, align)    ((x) & ((align) - 1))
#define P2NPHASE(x, align)   (-(x) & ((align) - 1))
#define ISP2(x)              (((x) & ((x) - 1)) == 0)
#define IS_P2ALIGNED(v, a)   ((((uintptr_t)(v)) & ((uintptr_t)(a) - 1)) == 0)
#define P2BOUNDARY(off, len, align) \
                             (((off) ^ ((off) + (len) - 1)) > (align) - 1)

/*
 * 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)))

#if defined(_KERNEL) && !defined(_KMEMUSER) && !defined(offsetof)

/* avoid any possibility of clashing with <stddef.h> version */

#define offsetof(s, m)  ((size_t)(&(((s *)0)->m)))
#endif

#endif  /* _SPL_SYSMACROS_H */
Commit	Line	Data
716154c5 BB	1	/*****************************************************************************\
	2	* Copyright (C) 2007-2010 Lawrence Livermore National Security, LLC.
	3	* Copyright (C) 2007 The Regents of the University of California.
	4	* Produced at Lawrence Livermore National Laboratory (cf, DISCLAIMER).
	5	* Written by Brian Behlendorf <behlendorf1@llnl.gov>.
715f6251	6	* UCRL-CODE-235197
715f6251	7	*
716154c5 BB	8	* This file is part of the SPL, Solaris Porting Layer.
	9	* For details, see <http://github.com/behlendorf/spl/>.
	10	*
	11	* The SPL is free software; you can redistribute it and/or modify it
	12	* under the terms of the GNU General Public License as published by the
	13	* Free Software Foundation; either version 2 of the License, or (at your
	14	* option) any later version.
715f6251	15	*
716154c5	16	* The SPL is distributed in the hope that it will be useful, but WITHOUT
715f6251	17	* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
	18	* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
	19	* for more details.
	20	*
	21	* You should have received a copy of the GNU General Public License along
716154c5 BB	22	* with the SPL. If not, see <http://www.gnu.org/licenses/>.
716154c5 BB	23	\*****************************************************************************/
715f6251	24
14c5326c	25	#ifndef _SPL_SYSMACROS_H
	26	#define _SPL_SYSMACROS_H
	27
14c5326c	28	#include <linux/module.h>
57d1b188	29	#include <sys/debug.h>
05ae387b	30	#include <sys/varargs.h>
36e6f861	31	#include <sys/zone.h>
1ec74a11	32	#include <sys/signal.h>
14c5326c	33
	34	#ifndef _KERNEL
	35	#define _KERNEL __KERNEL__
	36	#endif
	37
ed61a7d0	38	#define FALSE 0
ed61a7d0	39	#define TRUE 1
b0dd3380	40
14c5326c	41	#define INT32_MAX INT_MAX
3b3ba48f	42	#define INT32_MIN INT_MIN
	43	#define UINT32_MAX UINT_MAX
	44	#define UINT32_MIN UINT_MIN
	45	#define INT64_MAX LLONG_MAX
	46	#define INT64_MIN LLONG_MIN
	47	#define UINT64_MAX ULLONG_MAX
	48	#define UINT64_MIN ULLONG_MIN
	49
14c5326c	50	#define NBBY 8
14c5326c	51	#define ENOTSUP ENOTSUPP
b0dd3380	52
05ae387b	53	#define MAXMSGLEN 256
14c5326c	54	#define MAXNAMELEN 256
14c5326c	55	#define MAXPATHLEN PATH_MAX
f500ccff RC	56
f500ccff RC	57	#ifdef _LP64
b0dd3380	58	#define MAXOFFSET_T 0x7fffffffffffffffl
f500ccff RC	59	#else
	60	#define MAXOFFSET_T 0x7fffffffl
	61	#endif
b0dd3380	62
	63	#define MAXBSIZE 8192
	64	#define DEV_BSIZE 512
	65	#define DEV_BSHIFT 9 /* log2(DEV_BSIZE) */
	66
36b313da BB	67	#define curproc current
36b313da BB	68	#define proc_pageout NULL
14c5326c	69	#define max_ncpus 64
12472b24	70	#define CPU_SEQID smp_processor_id() /* I think... */
b0dd3380	71	#define _NOTE(x)
14c5326c	72
36b313da	73
6adf99e7	74	#define RLIM64_INFINITY RLIM_INFINITY
6adf99e7	75
14c5326c	76	/* 0..MAX_PRIO-1: Process priority
	77	* 0..MAX_RT_PRIO-1: RT priority tasks
	78	* MAX_RT_PRIO..MAX_PRIO-1: SCHED_NORMAL tasks
	79	*
	80	* Treat shim tasks as SCHED_NORMAL tasks
	81	*/
	82	#define minclsyspri (MAX_RT_PRIO)
	83	#define maxclsyspri (MAX_PRIO-1)
	84
	85	#define NICE_TO_PRIO(nice) (MAX_RT_PRIO + (nice) + 20)
	86	#define PRIO_TO_NICE(prio) ((prio) - MAX_RT_PRIO - 20)
	87
14c5326c	88	/* Missing macros
	89	*/
	90	#define PAGESIZE PAGE_SIZE
	91
	92	/* from Solaris sys/byteorder.h */
	93	#define BSWAP_8(x) ((x) & 0xff)
	94	#define BSWAP_16(x) ((BSWAP_8(x) << 8) \| BSWAP_8((x) >> 8))
	95	#define BSWAP_32(x) ((BSWAP_16(x) << 16) \| BSWAP_16((x) >> 16))
	96	#define BSWAP_64(x) ((BSWAP_32(x) << 32) \| BSWAP_32((x) >> 32))
	97
	98	/* Map some simple functions.
	99	*/
	100	#define bzero(ptr,size) memset(ptr,0,size)
	101	#define bcopy(src,dest,size) memcpy(dest,src,size)
b0dd3380	102	#define bcmp(src,dest,size) memcmp((src), (dest), (size_t)(size))
a713518f	103
a713518f	104	/* Dtrace probes do not exist in the linux kernel */
0f372044 BB	105	#ifdef DTRACE_PROBE
	106	#undef DTRACE_PROBE
	107	#endif /* DTRACE_PROBE */
	108	#define DTRACE_PROBE(a) ((void)0)
a713518f	109
	110	#ifdef DTRACE_PROBE1
	111	#undef DTRACE_PROBE1
	112	#endif /* DTRACE_PROBE1 */
3b3ba48f	113	#define DTRACE_PROBE1(a, b, c) ((void)0)
a713518f	114
	115	#ifdef DTRACE_PROBE2
	116	#undef DTRACE_PROBE2
	117	#endif /* DTRACE_PROBE2 */
3b3ba48f	118	#define DTRACE_PROBE2(a, b, c, d, e) ((void)0)
a713518f	119
	120	#ifdef DTRACE_PROBE3
	121	#undef DTRACE_PROBE3
	122	#endif /* DTRACE_PROBE3 */
3b3ba48f	123	#define DTRACE_PROBE3(a, b, c, d, e, f, g) ((void)0)
a713518f	124
	125	#ifdef DTRACE_PROBE4
	126	#undef DTRACE_PROBE4
	127	#endif /* DTRACE_PROBE4 */
3b3ba48f	128	#define DTRACE_PROBE4(a, b, c, d, e, f, g, h, i) ((void)0)
14c5326c	129
77b1fe8f	130	/* Missing globals */
3561541c	131	extern char spl_version[16];
937879f1	132	extern long spl_hostid;
937879f1	133	extern char hw_serial[11];
14c5326c	134	extern int p0;
14c5326c	135
77b1fe8f	136	/* Missing misc functions */
77b1fe8f	137	extern int highbit(unsigned long i);
99639e4a	138	extern uint32_t zone_get_hostid(void *zone);
51a727e9 BB	139	extern void spl_setup(void);
51a727e9 BB	140	extern void spl_cleanup(void);
77b1fe8f	141
14c5326c	142	#define makedevice(maj,min) makedev(maj,min)
14c5326c	143
14c5326c	144	/* common macros */
14c5326c	145	#ifndef MIN
37319315	146	#define MIN(a, b) ((a) < (b) ? (a) : (b))
14c5326c	147	#endif
14c5326c	148	#ifndef MAX
37319315	149	#define MAX(a, b) ((a) < (b) ? (b) : (a))
14c5326c	150	#endif
14c5326c	151	#ifndef ABS
37319315 BB	152	#define ABS(a) ((a) < 0 ? -(a) : (a))
	153	#endif
	154	#ifndef DIV_ROUND_UP
	155	#define DIV_ROUND_UP(n,d) (((n) + (d) - 1) / (d))
	156	#endif
	157	#ifndef roundup
	158	#define roundup(x, y) ((((x) + ((y) - 1)) / (y)) * (y))
14c5326c	159	#endif
	160
	161	/*
	162	* Compatibility macros/typedefs needed for Solaris -> Linux port
	163	*/
	164	#define P2ALIGN(x, align) ((x) & -(align))
	165	#define P2CROSS(x, y, align) (((x) ^ (y)) > (align) - 1)
	166	#define P2ROUNDUP(x, align) (-(-(x) & -(align)))
14c5326c	167	#define P2PHASE(x, align) ((x) & ((align) - 1))
14c5326c	168	#define P2NPHASE(x, align) (-(x) & ((align) - 1))
14c5326c	169	#define ISP2(x) (((x) & ((x) - 1)) == 0)
14c5326c	170	#define IS_P2ALIGNED(v, a) ((((uintptr_t)(v)) & ((uintptr_t)(a) - 1)) == 0)
160c63ab BB	171	#define P2BOUNDARY(off, len, align) \
160c63ab BB	172	(((off) ^ ((off) + (len) - 1)) > (align) - 1)
14c5326c	173
	174	/*
	175	* Typed version of the P2* macros. These macros should be used to ensure
	176	* that the result is correctly calculated based on the data type of (x),
	177	* which is passed in as the last argument, regardless of the data
	178	* type of the alignment. For example, if (x) is of type uint64_t,
	179	* and we want to round it up to a page boundary using "PAGESIZE" as
	180	* the alignment, we can do either
	181	* P2ROUNDUP(x, (uint64_t)PAGESIZE)
	182	* or
	183	* P2ROUNDUP_TYPED(x, PAGESIZE, uint64_t)
	184	*/
	185	#define P2ALIGN_TYPED(x, align, type) \
	186	((type)(x) & -(type)(align))
	187	#define P2PHASE_TYPED(x, align, type) \
	188	((type)(x) & ((type)(align) - 1))
	189	#define P2NPHASE_TYPED(x, align, type) \
	190	(-(type)(x) & ((type)(align) - 1))
	191	#define P2ROUNDUP_TYPED(x, align, type) \
	192	(-(-(type)(x) & -(type)(align)))
	193	#define P2END_TYPED(x, align, type) \
	194	(-(~(type)(x) & -(type)(align)))
	195	#define P2PHASEUP_TYPED(x, align, phase, type) \
	196	((type)(phase) - (((type)(phase) - (type)(x)) & -(type)(align)))
	197	#define P2CROSS_TYPED(x, y, align, type) \
	198	(((type)(x) ^ (type)(y)) > (type)(align) - 1)
	199	#define P2SAMEHIGHBIT_TYPED(x, y, type) \
	200	(((type)(x) ^ (type)(y)) < ((type)(x) & (type)(y)))
	201
	202	#if defined(_KERNEL) && !defined(_KMEMUSER) && !defined(offsetof)
	203
	204	/* avoid any possibility of clashing with <stddef.h> version */
	205
	206	#define offsetof(s, m) ((size_t)(&(((s *)0)->m)))
	207	#endif
	208
14c5326c	209	#endif /* _SPL_SYSMACROS_H */