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

#ifndef _SPL_SYSMACROS_H
#define _SPL_SYSMACROS_H

#ifdef  __cplusplus
extern "C" {
#endif

#include <linux/module.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
#define MAXOFFSET_T			0x7fffffffffffffffl

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

#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))
#define ASSERT(x)                       BUG_ON(!(x))
#define VERIFY(x)			ASSERT(x)

#define VERIFY3_IMPL(LEFT, OP, RIGHT, TYPE, FMT, CAST) do {         \
	const TYPE __left = (TYPE)(LEFT);                           \
	const TYPE __right = (TYPE)(RIGHT);                         \
	if (!(__left OP __right)) {                                 \
		printk("spl: Error VERIFY3(" FMT " " #OP " " FMT ")\n", \
		        CAST __left,  CAST __right);                \
		BUG();                                              \
	}                                                           \
} while (0)

#define VERIFY3S(x, y, z)   VERIFY3_IMPL(x, y, z, int64_t, "%ld", (long))
#define VERIFY3U(x, y, z)   VERIFY3_IMPL(x, y, z, uint64_t, "%lu", (unsigned long))
#define VERIFY3P(x, y, z)   VERIFY3_IMPL(x, y, z, uintptr_t, "%p", (void *))

#define ASSERT3S(x, y, z)   VERIFY3S(x, y, z)
#define ASSERT3U(x, y, z)   VERIFY3U(x, y, z)
#define ASSERT3P(x, y, z)   VERIFY3P(x, y, z)

/* Dtrace probes do not exist in the linux kernel */

#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 int p0;
extern char hw_serial[11];

/* Missing misc functions */
extern int highbit(unsigned long i);
extern int ddi_strtoul(const char *hw_serial, char **nptr,
		       int base, unsigned long *result);

#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

/*
 * 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)

/*
 * 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
14c5326c	1	#ifndef _SPL_SYSMACROS_H
	2	#define _SPL_SYSMACROS_H
	3
	4	#ifdef __cplusplus
	5	extern "C" {
	6	#endif
	7
	8	#include <linux/module.h>
05ae387b	9	#include <sys/varargs.h>
36e6f861	10	#include <sys/zone.h>
1ec74a11	11	#include <sys/signal.h>
14c5326c	12
	13	#ifndef _KERNEL
	14	#define _KERNEL __KERNEL__
	15	#endif
	16
	17	/* Missing defines.
	18	*/
ed61a7d0	19	#define FALSE 0
ed61a7d0	20	#define TRUE 1
b0dd3380	21
14c5326c	22	#define INT32_MAX INT_MAX
3b3ba48f	23	#define INT32_MIN INT_MIN
	24	#define UINT32_MAX UINT_MAX
	25	#define UINT32_MIN UINT_MIN
	26	#define INT64_MAX LLONG_MAX
	27	#define INT64_MIN LLONG_MIN
	28	#define UINT64_MAX ULLONG_MAX
	29	#define UINT64_MIN ULLONG_MIN
	30
14c5326c	31	#define NBBY 8
14c5326c	32	#define ENOTSUP ENOTSUPP
b0dd3380	33
05ae387b	34	#define MAXMSGLEN 256
14c5326c	35	#define MAXNAMELEN 256
14c5326c	36	#define MAXPATHLEN PATH_MAX
b0dd3380	37	#define MAXOFFSET_T 0x7fffffffffffffffl
	38
	39	#define MAXBSIZE 8192
	40	#define DEV_BSIZE 512
	41	#define DEV_BSHIFT 9 /* log2(DEV_BSIZE) */
	42
14c5326c	43	#define max_ncpus 64
12472b24	44	#define CPU_SEQID smp_processor_id() /* I think... */
b0dd3380	45	#define _NOTE(x)
14c5326c	46
6adf99e7	47	#define RLIM64_INFINITY RLIM_INFINITY
6adf99e7	48
14c5326c	49	/* 0..MAX_PRIO-1: Process priority
	50	* 0..MAX_RT_PRIO-1: RT priority tasks
	51	* MAX_RT_PRIO..MAX_PRIO-1: SCHED_NORMAL tasks
	52	*
	53	* Treat shim tasks as SCHED_NORMAL tasks
	54	*/
	55	#define minclsyspri (MAX_RT_PRIO)
	56	#define maxclsyspri (MAX_PRIO-1)
	57
	58	#define NICE_TO_PRIO(nice) (MAX_RT_PRIO + (nice) + 20)
	59	#define PRIO_TO_NICE(prio) ((prio) - MAX_RT_PRIO - 20)
	60
14c5326c	61	/* Missing macros
	62	*/
	63	#define PAGESIZE PAGE_SIZE
	64
	65	/* from Solaris sys/byteorder.h */
	66	#define BSWAP_8(x) ((x) & 0xff)
	67	#define BSWAP_16(x) ((BSWAP_8(x) << 8) \| BSWAP_8((x) >> 8))
	68	#define BSWAP_32(x) ((BSWAP_16(x) << 16) \| BSWAP_16((x) >> 16))
	69	#define BSWAP_64(x) ((BSWAP_32(x) << 32) \| BSWAP_32((x) >> 32))
	70
	71	/* Map some simple functions.
	72	*/
	73	#define bzero(ptr,size) memset(ptr,0,size)
	74	#define bcopy(src,dest,size) memcpy(dest,src,size)
b0dd3380	75	#define bcmp(src,dest,size) memcmp((src), (dest), (size_t)(size))
14c5326c	76	#define ASSERT(x) BUG_ON(!(x))
77b1fe8f	77	#define VERIFY(x) ASSERT(x)
a713518f	78
d429b03d	79	#define VERIFY3_IMPL(LEFT, OP, RIGHT, TYPE, FMT, CAST) do { \
	80	const TYPE __left = (TYPE)(LEFT); \
	81	const TYPE __right = (TYPE)(RIGHT); \
	82	if (!(__left OP __right)) { \
8d0f1ee9	83	printk("spl: Error VERIFY3(" FMT " " #OP " " FMT ")\n", \
d429b03d	84	CAST __left, CAST __right); \
	85	BUG(); \
	86	} \
a713518f	87	} while (0)
a713518f	88
d429b03d	89	#define VERIFY3S(x, y, z) VERIFY3_IMPL(x, y, z, int64_t, "%ld", (long))
	90	#define VERIFY3U(x, y, z) VERIFY3_IMPL(x, y, z, uint64_t, "%lu", (unsigned long))
	91	#define VERIFY3P(x, y, z) VERIFY3_IMPL(x, y, z, uintptr_t, "%p", (void *))
a713518f	92
d429b03d	93	#define ASSERT3S(x, y, z) VERIFY3S(x, y, z)
	94	#define ASSERT3U(x, y, z) VERIFY3U(x, y, z)
	95	#define ASSERT3P(x, y, z) VERIFY3P(x, y, z)
a713518f	96
	97	/* Dtrace probes do not exist in the linux kernel */
	98
	99	#ifdef DTRACE_PROBE1
	100	#undef DTRACE_PROBE1
	101	#endif /* DTRACE_PROBE1 */
3b3ba48f	102	#define DTRACE_PROBE1(a, b, c) ((void)0)
a713518f	103
	104	#ifdef DTRACE_PROBE2
	105	#undef DTRACE_PROBE2
	106	#endif /* DTRACE_PROBE2 */
3b3ba48f	107	#define DTRACE_PROBE2(a, b, c, d, e) ((void)0)
a713518f	108
	109	#ifdef DTRACE_PROBE3
	110	#undef DTRACE_PROBE3
	111	#endif /* DTRACE_PROBE3 */
3b3ba48f	112	#define DTRACE_PROBE3(a, b, c, d, e, f, g) ((void)0)
a713518f	113
	114	#ifdef DTRACE_PROBE4
	115	#undef DTRACE_PROBE4
	116	#endif /* DTRACE_PROBE4 */
3b3ba48f	117	#define DTRACE_PROBE4(a, b, c, d, e, f, g, h, i) ((void)0)
14c5326c	118
77b1fe8f	119	/* Missing globals */
14c5326c	120	extern int p0;
2f5d55aa	121	extern char hw_serial[11];
14c5326c	122
77b1fe8f	123	/* Missing misc functions */
77b1fe8f	124	extern int highbit(unsigned long i);
2f5d55aa	125	extern int ddi_strtoul(const char hw_serial, char *nptr,
2f5d55aa	126	int base, unsigned long *result);
77b1fe8f	127
14c5326c	128	#define makedevice(maj,min) makedev(maj,min)
14c5326c	129
14c5326c	130	/* common macros */
	131	#ifndef MIN
	132	#define MIN(a, b) ((a) < (b) ? (a) : (b))
	133	#endif
	134	#ifndef MAX
	135	#define MAX(a, b) ((a) < (b) ? (b) : (a))
	136	#endif
	137	#ifndef ABS
	138	#define ABS(a) ((a) < 0 ? -(a) : (a))
	139	#endif
	140
	141	/*
	142	* Compatibility macros/typedefs needed for Solaris -> Linux port
	143	*/
	144	#define P2ALIGN(x, align) ((x) & -(align))
	145	#define P2CROSS(x, y, align) (((x) ^ (y)) > (align) - 1)
	146	#define P2ROUNDUP(x, align) (-(-(x) & -(align)))
	147	#define P2ROUNDUP_TYPED(x, align, type) \
	148	(-(-(type)(x) & -(type)(align)))
	149	#define P2PHASE(x, align) ((x) & ((align) - 1))
	150	#define P2NPHASE(x, align) (-(x) & ((align) - 1))
	151	#define P2NPHASE_TYPED(x, align, type) \
	152	(-(type)(x) & ((type)(align) - 1))
	153	#define ISP2(x) (((x) & ((x) - 1)) == 0)
	154	#define IS_P2ALIGNED(v, a) ((((uintptr_t)(v)) & ((uintptr_t)(a) - 1)) == 0)
	155
	156	/*
	157	* Typed version of the P2* macros. These macros should be used to ensure
	158	* that the result is correctly calculated based on the data type of (x),
	159	* which is passed in as the last argument, regardless of the data
	160	* type of the alignment. For example, if (x) is of type uint64_t,
	161	* and we want to round it up to a page boundary using "PAGESIZE" as
	162	* the alignment, we can do either
	163	* P2ROUNDUP(x, (uint64_t)PAGESIZE)
	164	* or
	165	* P2ROUNDUP_TYPED(x, PAGESIZE, uint64_t)
	166	*/
	167	#define P2ALIGN_TYPED(x, align, type) \
	168	((type)(x) & -(type)(align))
	169	#define P2PHASE_TYPED(x, align, type) \
	170	((type)(x) & ((type)(align) - 1))
	171	#define P2NPHASE_TYPED(x, align, type) \
	172	(-(type)(x) & ((type)(align) - 1))
	173	#define P2ROUNDUP_TYPED(x, align, type) \
	174	(-(-(type)(x) & -(type)(align)))
	175	#define P2END_TYPED(x, align, type) \
	176	(-(~(type)(x) & -(type)(align)))
	177	#define P2PHASEUP_TYPED(x, align, phase, type) \
	178	((type)(phase) - (((type)(phase) - (type)(x)) & -(type)(align)))
	179	#define P2CROSS_TYPED(x, y, align, type) \
	180	(((type)(x) ^ (type)(y)) > (type)(align) - 1)
	181	#define P2SAMEHIGHBIT_TYPED(x, y, type) \
	182	(((type)(x) ^ (type)(y)) < ((type)(x) & (type)(y)))
	183
	184	#if defined(_KERNEL) && !defined(_KMEMUSER) && !defined(offsetof)
	185
	186	/* avoid any possibility of clashing with <stddef.h> version */
	187
	188	#define offsetof(s, m) ((size_t)(&(((s *)0)->m)))
	189	#endif
	190
	191	#ifdef __cplusplus
	192	}
	193	#endif
194
195	#endif /* _SPL_SYSMACROS_H */