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

/*
 *  This file is part of the SPL: Solaris Porting Layer.
 *
 *  Copyright (c) 2008 Lawrence Livermore National Security, LLC.
 *  Produced at Lawrence Livermore National Laboratory
 *  Written by:
 *          Brian Behlendorf <behlendorf1@llnl.gov>,
 *          Herb Wartens <wartens2@llnl.gov>,
 *          Jim Garlick <garlick@llnl.gov>
 *  UCRL-CODE-235197
 *
 *  This 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.
 *
 *  This 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 this program; if not, write to the Free Software Foundation, Inc.,
 *  51 Franklin Street, Fifth Floor, Boston, MA  02110-1301  USA.
 */

#ifndef _SPL_SYSMACROS_H
#define _SPL_SYSMACROS_H

#ifdef  __cplusplus
extern "C" {
#endif

#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

/* Missing defines.
 */
#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);

#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 P2ROUNDUP_TYPED(x, align, type) \
                             (-(-(type)(x) & -(type)(align)))
#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)
#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

#ifdef  __cplusplus
}
#endif

#endif  /* _SPL_SYSMACROS_H */
Commit	Line	Data
715f6251	1	/*
	2	* This file is part of the SPL: Solaris Porting Layer.
	3	*
	4	* Copyright (c) 2008 Lawrence Livermore National Security, LLC.
	5	* Produced at Lawrence Livermore National Laboratory
	6	* Written by:
	7	* Brian Behlendorf <behlendorf1@llnl.gov>,
	8	* Herb Wartens <wartens2@llnl.gov>,
	9	* Jim Garlick <garlick@llnl.gov>
	10	* UCRL-CODE-235197
	11	*
	12	* This is free software; you can redistribute it and/or modify it
	13	* under the terms of the GNU General Public License as published by
	14	* the Free Software Foundation; either version 2 of the License, or
	15	* (at your option) any later version.
	16	*
	17	* This is distributed in the hope that it will be useful, but WITHOUT
	18	* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
	19	* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
	20	* for more details.
	21	*
	22	* You should have received a copy of the GNU General Public License along
	23	* with this program; if not, write to the Free Software Foundation, Inc.,
	24	* 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
	25	*/
	26
14c5326c	27	#ifndef _SPL_SYSMACROS_H
	28	#define _SPL_SYSMACROS_H
	29
	30	#ifdef __cplusplus
	31	extern "C" {
	32	#endif
	33
	34	#include <linux/module.h>
57d1b188	35	#include <sys/debug.h>
05ae387b	36	#include <sys/varargs.h>
36e6f861	37	#include <sys/zone.h>
1ec74a11	38	#include <sys/signal.h>
14c5326c	39
	40	#ifndef _KERNEL
	41	#define _KERNEL __KERNEL__
	42	#endif
	43
	44	/* Missing defines.
	45	*/
ed61a7d0	46	#define FALSE 0
ed61a7d0	47	#define TRUE 1
b0dd3380	48
14c5326c	49	#define INT32_MAX INT_MAX
3b3ba48f	50	#define INT32_MIN INT_MIN
	51	#define UINT32_MAX UINT_MAX
	52	#define UINT32_MIN UINT_MIN
	53	#define INT64_MAX LLONG_MAX
	54	#define INT64_MIN LLONG_MIN
	55	#define UINT64_MAX ULLONG_MAX
	56	#define UINT64_MIN ULLONG_MIN
	57
14c5326c	58	#define NBBY 8
14c5326c	59	#define ENOTSUP ENOTSUPP
b0dd3380	60
05ae387b	61	#define MAXMSGLEN 256
14c5326c	62	#define MAXNAMELEN 256
14c5326c	63	#define MAXPATHLEN PATH_MAX
f500ccff RC	64
f500ccff RC	65	#ifdef _LP64
b0dd3380	66	#define MAXOFFSET_T 0x7fffffffffffffffl
f500ccff RC	67	#else
	68	#define MAXOFFSET_T 0x7fffffffl
	69	#endif
b0dd3380	70
	71	#define MAXBSIZE 8192
	72	#define DEV_BSIZE 512
	73	#define DEV_BSHIFT 9 /* log2(DEV_BSIZE) */
	74
36b313da BB	75	#define curproc current
36b313da BB	76	#define proc_pageout NULL
14c5326c	77	#define max_ncpus 64
12472b24	78	#define CPU_SEQID smp_processor_id() /* I think... */
b0dd3380	79	#define _NOTE(x)
14c5326c	80
36b313da	81
6adf99e7	82	#define RLIM64_INFINITY RLIM_INFINITY
6adf99e7	83
14c5326c	84	/* 0..MAX_PRIO-1: Process priority
	85	* 0..MAX_RT_PRIO-1: RT priority tasks
	86	* MAX_RT_PRIO..MAX_PRIO-1: SCHED_NORMAL tasks
	87	*
	88	* Treat shim tasks as SCHED_NORMAL tasks
	89	*/
	90	#define minclsyspri (MAX_RT_PRIO)
	91	#define maxclsyspri (MAX_PRIO-1)
	92
	93	#define NICE_TO_PRIO(nice) (MAX_RT_PRIO + (nice) + 20)
	94	#define PRIO_TO_NICE(prio) ((prio) - MAX_RT_PRIO - 20)
	95
14c5326c	96	/* Missing macros
	97	*/
	98	#define PAGESIZE PAGE_SIZE
	99
	100	/* from Solaris sys/byteorder.h */
	101	#define BSWAP_8(x) ((x) & 0xff)
	102	#define BSWAP_16(x) ((BSWAP_8(x) << 8) \| BSWAP_8((x) >> 8))
	103	#define BSWAP_32(x) ((BSWAP_16(x) << 16) \| BSWAP_16((x) >> 16))
	104	#define BSWAP_64(x) ((BSWAP_32(x) << 32) \| BSWAP_32((x) >> 32))
	105
	106	/* Map some simple functions.
	107	*/
	108	#define bzero(ptr,size) memset(ptr,0,size)
	109	#define bcopy(src,dest,size) memcpy(dest,src,size)
b0dd3380	110	#define bcmp(src,dest,size) memcmp((src), (dest), (size_t)(size))
a713518f	111
a713518f	112	/* Dtrace probes do not exist in the linux kernel */
0f372044 BB	113	#ifdef DTRACE_PROBE
	114	#undef DTRACE_PROBE
	115	#endif /* DTRACE_PROBE */
	116	#define DTRACE_PROBE(a) ((void)0)
a713518f	117
	118	#ifdef DTRACE_PROBE1
	119	#undef DTRACE_PROBE1
	120	#endif /* DTRACE_PROBE1 */
3b3ba48f	121	#define DTRACE_PROBE1(a, b, c) ((void)0)
a713518f	122
	123	#ifdef DTRACE_PROBE2
	124	#undef DTRACE_PROBE2
	125	#endif /* DTRACE_PROBE2 */
3b3ba48f	126	#define DTRACE_PROBE2(a, b, c, d, e) ((void)0)
a713518f	127
	128	#ifdef DTRACE_PROBE3
	129	#undef DTRACE_PROBE3
	130	#endif /* DTRACE_PROBE3 */
3b3ba48f	131	#define DTRACE_PROBE3(a, b, c, d, e, f, g) ((void)0)
a713518f	132
	133	#ifdef DTRACE_PROBE4
	134	#undef DTRACE_PROBE4
	135	#endif /* DTRACE_PROBE4 */
3b3ba48f	136	#define DTRACE_PROBE4(a, b, c, d, e, f, g, h, i) ((void)0)
14c5326c	137
77b1fe8f	138	/* Missing globals */
3561541c	139	extern char spl_version[16];
937879f1	140	extern long spl_hostid;
937879f1	141	extern char hw_serial[11];
14c5326c	142	extern int p0;
14c5326c	143
77b1fe8f	144	/* Missing misc functions */
77b1fe8f	145	extern int highbit(unsigned long i);
99639e4a	146	extern uint32_t zone_get_hostid(void *zone);
77b1fe8f	147
14c5326c	148	#define makedevice(maj,min) makedev(maj,min)
14c5326c	149
14c5326c	150	/* common macros */
14c5326c	151	#ifndef MIN
37319315	152	#define MIN(a, b) ((a) < (b) ? (a) : (b))
14c5326c	153	#endif
14c5326c	154	#ifndef MAX
37319315	155	#define MAX(a, b) ((a) < (b) ? (b) : (a))
14c5326c	156	#endif
14c5326c	157	#ifndef ABS
37319315 BB	158	#define ABS(a) ((a) < 0 ? -(a) : (a))
	159	#endif
	160	#ifndef DIV_ROUND_UP
	161	#define DIV_ROUND_UP(n,d) (((n) + (d) - 1) / (d))
	162	#endif
	163	#ifndef roundup
	164	#define roundup(x, y) ((((x) + ((y) - 1)) / (y)) * (y))
14c5326c	165	#endif
	166
	167	/*
	168	* Compatibility macros/typedefs needed for Solaris -> Linux port
	169	*/
	170	#define P2ALIGN(x, align) ((x) & -(align))
	171	#define P2CROSS(x, y, align) (((x) ^ (y)) > (align) - 1)
	172	#define P2ROUNDUP(x, align) (-(-(x) & -(align)))
	173	#define P2ROUNDUP_TYPED(x, align, type) \
	174	(-(-(type)(x) & -(type)(align)))
	175	#define P2PHASE(x, align) ((x) & ((align) - 1))
	176	#define P2NPHASE(x, align) (-(x) & ((align) - 1))
	177	#define P2NPHASE_TYPED(x, align, type) \
	178	(-(type)(x) & ((type)(align) - 1))
	179	#define ISP2(x) (((x) & ((x) - 1)) == 0)
	180	#define IS_P2ALIGNED(v, a) ((((uintptr_t)(v)) & ((uintptr_t)(a) - 1)) == 0)
160c63ab BB	181	#define P2BOUNDARY(off, len, align) \
160c63ab BB	182	(((off) ^ ((off) + (len) - 1)) > (align) - 1)
14c5326c	183
	184	/*
	185	* Typed version of the P2* macros. These macros should be used to ensure
	186	* that the result is correctly calculated based on the data type of (x),
	187	* which is passed in as the last argument, regardless of the data
	188	* type of the alignment. For example, if (x) is of type uint64_t,
	189	* and we want to round it up to a page boundary using "PAGESIZE" as
	190	* the alignment, we can do either
	191	* P2ROUNDUP(x, (uint64_t)PAGESIZE)
	192	* or
	193	* P2ROUNDUP_TYPED(x, PAGESIZE, uint64_t)
	194	*/
	195	#define P2ALIGN_TYPED(x, align, type) \
	196	((type)(x) & -(type)(align))
	197	#define P2PHASE_TYPED(x, align, type) \
	198	((type)(x) & ((type)(align) - 1))
	199	#define P2NPHASE_TYPED(x, align, type) \
	200	(-(type)(x) & ((type)(align) - 1))
	201	#define P2ROUNDUP_TYPED(x, align, type) \
	202	(-(-(type)(x) & -(type)(align)))
	203	#define P2END_TYPED(x, align, type) \
	204	(-(~(type)(x) & -(type)(align)))
	205	#define P2PHASEUP_TYPED(x, align, phase, type) \
	206	((type)(phase) - (((type)(phase) - (type)(x)) & -(type)(align)))
	207	#define P2CROSS_TYPED(x, y, align, type) \
	208	(((type)(x) ^ (type)(y)) > (type)(align) - 1)
	209	#define P2SAMEHIGHBIT_TYPED(x, y, type) \
	210	(((type)(x) ^ (type)(y)) < ((type)(x) & (type)(y)))
	211
	212	#if defined(_KERNEL) && !defined(_KMEMUSER) && !defined(offsetof)
	213
	214	/* avoid any possibility of clashing with <stddef.h> version */
	215
	216	#define offsetof(s, m) ((size_t)(&(((s *)0)->m)))
	217	#endif
	218
	219	#ifdef __cplusplus
	220	}
	221	#endif
	222
	223	#endif /* _SPL_SYSMACROS_H */