include/sys/sysmacros.h

   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>
   9 #include <sys/varargs.h>
  10 #include <sys/zone.h>
  11 #include <sys/signal.h>
  12
  13 #ifndef _KERNEL
  14 #define _KERNEL                         __KERNEL__
  15 #endif
  16
  17 /* Missing defines.
  18  */
  19 #define FALSE                           0
  20 #define TRUE                            1
  21
  22 #define INT32_MAX                       INT_MAX
  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
  31 #define NBBY                            8
  32 #define ENOTSUP                         ENOTSUPP
  33
  34 #define MAXMSGLEN                       256
  35 #define MAXNAMELEN                      256
  36 #define MAXPATHLEN                      PATH_MAX
  37 #define MAXOFFSET_T                     0x7fffffffffffffffl
  38
  39 #define MAXBSIZE                        8192
  40 #define DEV_BSIZE                       512
  41 #define DEV_BSHIFT                      9 /* log2(DEV_BSIZE) */
  42
  43 #define max_ncpus                       64
  44 #define CPU_SEQID                       smp_processor_id() /* I think... */
  45 #define _NOTE(x)
  46
  47 #define RLIM64_INFINITY                 RLIM_INFINITY
  48
  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
  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)
  75 #define bcmp(src,dest,size)             memcmp((src), (dest), (size_t)(size))
  76 #define ASSERT(x)                       BUG_ON(!(x))
  77 #define VERIFY(x)                       ASSERT(x)
  78
  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)) {                                 \
  83                 printk("spl: Error VERIFY3(" FMT " " #OP " " FMT ")\n", \
  84                         CAST __left,  CAST __right);                \
  85                 BUG();                                              \
  86         }                                                           \
  87 } while (0)
  88
  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 *))
  92
  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)
  96
  97 /* Dtrace probes do not exist in the linux kernel */
  98
  99 #ifdef DTRACE_PROBE1
 100 #undef  DTRACE_PROBE1
 101 #endif  /* DTRACE_PROBE1 */
 102 #define DTRACE_PROBE1(a, b, c)                          ((void)0)
 103
 104 #ifdef DTRACE_PROBE2
 105 #undef  DTRACE_PROBE2
 106 #endif  /* DTRACE_PROBE2 */
 107 #define DTRACE_PROBE2(a, b, c, d, e)                    ((void)0)
 108
 109 #ifdef DTRACE_PROBE3
 110 #undef  DTRACE_PROBE3
 111 #endif  /* DTRACE_PROBE3 */
 112 #define DTRACE_PROBE3(a, b, c, d, e, f, g)              ((void)0)
 113
 114 #ifdef DTRACE_PROBE4
 115 #undef  DTRACE_PROBE4
 116 #endif  /* DTRACE_PROBE4 */
 117 #define DTRACE_PROBE4(a, b, c, d, e, f, g, h, i)        ((void)0)
 118
 119 /* Missing globals */
 120 extern int p0;
 121 extern char hw_serial[11];
 122
 123 /* Missing misc functions */
 124 extern int highbit(unsigned long i);
 125 extern int ddi_strtoul(const char *hw_serial, char **nptr,
 126                        int base, unsigned long *result);
 127
 128 #define makedevice(maj,min) makedev(maj,min)
 129
 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 */