---
freebsd/sys/sys/bitstring.h | 3 +
rtemsbsd/include/machine/bitstring.h | 107 +++++++++++++++++++++++++++++++++++
2 files changed, 110 insertions(+)
create mode 100644 rtemsbsd/include/machine/bitstring.h
diff --git a/freebsd/sys/sys/bitstring.h b/freebsd/sys/sys/bitstring.h
index 18c9187..8fd9b25 100644
--- a/freebsd/sys/sys/bitstring.h
+++ b/freebsd/sys/sys/bitstring.h
@@ -68,6 +68,9 @@
#endif
#include <sys/types.h>
+#ifdef __rtems__
+#include <machine/bitstring.h>
+#endif /* __rtems__ */
typedef unsigned long bitstr_t;
diff --git a/rtemsbsd/include/machine/bitstring.h
b/rtemsbsd/include/machine/bitstring.h
new file mode 100644
index 0000000..419cb6d
--- /dev/null
+++ b/rtemsbsd/include/machine/bitstring.h
@@ -0,0 +1,107 @@
+/*-
+ * Copyright (c) 1982, 1986, 1991, 1993, 1994
+ * The Regents of the University of California. All rights reserved.
+ * (c) UNIX System Laboratories, Inc.
+ * All or some portions of this file are derived from material licensed
+ * to the University of California by American Telephone and Telegraph
+ * Co. or Unix System Laboratories, Inc. and are reproduced herein with
+ * the permission of UNIX System Laboratories, Inc.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ * notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ * notice, this list of conditions and the following disclaimer in the
+ * documentation and/or other materials provided with the distribution.
+ * 3. Neither the name of the University nor the names of its contributors
+ * may be used to endorse or promote products derived from this software
+ * without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ *
+ * @(#)types.h 8.6 (Berkeley) 2/19/95
+ * $FreeBSD$
+ */
+
+#ifndef _RTEMS_BSD_MACHINE_BITSTRING_H_
+#define _RTEMS_BSD_MACHINE_BITSTRING_H_
+
+#ifndef _SYS_BITSTRING_H_
+#error "the header file <sys/bitstring.h> must be included first"
+#endif
+
+#ifdef __POPCNT__
+#define __bitcount64(x) __builtin_popcountll((__uint64_t)(x))
+#define __bitcount32(x) __builtin_popcount((__uint32_t)(x))
+#define __bitcount16(x) __builtin_popcount((__uint16_t)(x))
+#define __bitcountl(x) __builtin_popcountl((unsigned long)(x))
+#define __bitcount(x) __builtin_popcount((unsigned int)(x))
+#else
+/*
+ * Population count algorithm using SWAR approach
+ * - "SIMD Within A Register".
+ */
+static __inline __uint16_t
+__bitcount16(__uint16_t _x)
+{
+
+ _x = (_x & 0x5555) + ((_x & 0xaaaa) >> 1);
+ _x = (_x & 0x3333) + ((_x & 0xcccc) >> 2);
+ _x = (_x + (_x >> 4)) & 0x0f0f;
+ _x = (_x + (_x >> 8)) & 0x00ff;
+ return (_x);
+}
+
+static __inline __uint32_t
+__bitcount32(__uint32_t _x)
+{
+
+ _x = (_x & 0x55555555) + ((_x & 0xaaaaaaaa) >> 1);
+ _x = (_x & 0x33333333) + ((_x & 0xcccccccc) >> 2);
+ _x = (_x + (_x >> 4)) & 0x0f0f0f0f;
+ _x = (_x + (_x >> 8));
+ _x = (_x + (_x >> 16)) & 0x000000ff;
+ return (_x);
+}
+
+#ifdef __LP64__
+static __inline __uint64_t
+__bitcount64(__uint64_t _x)
+{
+
+ _x = (_x & 0x5555555555555555) + ((_x & 0xaaaaaaaaaaaaaaaa) >> 1);
+ _x = (_x & 0x3333333333333333) + ((_x & 0xcccccccccccccccc) >> 2);
+ _x = (_x + (_x >> 4)) & 0x0f0f0f0f0f0f0f0f;
+ _x = (_x + (_x >> 8));
+ _x = (_x + (_x >> 16));
+ _x = (_x + (_x >> 32)) & 0x000000ff;
+ return (_x);
+}
+
+#define __bitcountl(x) __bitcount64((unsigned long)(x))
+#else
+static __inline __uint64_t
+__bitcount64(__uint64_t _x)
+{
+
+ return (__bitcount32(_x >> 32) + __bitcount32(_x));
+}
+
+#define __bitcountl(x) __bitcount32((unsigned long)(x))
+#endif
+#define __bitcount(x) __bitcount32((unsigned int)(x))
+#endif
+
+#endif /* !_RTEMS_BSD_MACHINE_BITSTRING_H_ */
--
1.9.1
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