More stub headers,

moved generic to sysmacros,
added some more macros for kernel compatibility


git-svn-id: https://outreach.scidac.gov/svn/spl/trunk@22 7e1ea52c-4ff2-0310-8f11-9dd32ca42a1c

1 files changed, 141 insertions, 0 deletions

diff --git a/include/sys/sysmacros.h b/include/sys/sysmacros.h
new file mode 100644
index 000000000..c48019fdb
--- /dev/null
+++ b/include/sys/sysmacros.h
@@ -0,0 +1,141 @@
+#ifndef _SPL_SYSMACROS_H
+#define _SPL_SYSMACROS_H
+
+#ifdef  __cplusplus
+extern "C" {
+#endif
+
+#include <linux/module.h>
+
+#ifndef _KERNEL
+#define _KERNEL                         __KERNEL__
+#endif
+
+/* Missing defines.
+ */
+#define INT32_MAX                       INT_MAX
+#define UINT64_MAX                      (~0ULL)
+#define NBBY                            8
+#define ENOTSUP                         ENOTSUPP
+#define MAXNAMELEN                      256
+#define MAXPATHLEN                      PATH_MAX
+#define __va_list                       va_list
+#define max_ncpus                       64
+
+/* 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)
+
+#define kred                            NULL
+
+#define FREAD                           1
+#define FWRITE                          2
+#define FCREAT  O_CREAT
+#define FTRUNC  O_TRUNC
+#define FOFFMAX O_LARGEFILE
+#define FSYNC   O_SYNC
+#define FDSYNC  O_DSYNC
+#define FRSYNC  O_RSYNC
+#define FEXCL   O_EXCL
+
+#define FNODSYNC  0x10000 /* fsync pseudo flag */
+#define FNOFOLLOW 0x20000 /* don't follow symlinks */
+
+/* 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 ASSERT(x)                       BUG_ON(!(x))
+#define ASSERT3U(left,OP,right)         BUG_ON(!((left) OP (right)))
+
+/* Missing globals
+ */
+extern int p0;
+
+#define makedevice(maj,min) makedev(maj,min)
+
+/* XXX - Borrowed from zfs project libsolcompat/include/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
+
+/*
+ * 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 */