svn commit: r289765 - in head/sys: conf libkern sys
Conrad E. Meyer
cem at FreeBSD.org
Thu Oct 22 20:28:39 UTC 2015
Author: cem
Date: Thu Oct 22 20:28:37 2015
New Revision: 289765
URL: https://svnweb.freebsd.org/changeset/base/289765
Log:
Add libkern ffsll() for parity with flsll()
Sponsored by: EMC / Isilon Storage Division
Differential Revision: https://reviews.freebsd.org/D3962
Added:
head/sys/libkern/ffsll.c (contents, props changed)
Modified:
head/sys/conf/files.arm
head/sys/conf/files.arm64
head/sys/conf/files.i386
head/sys/conf/files.mips
head/sys/conf/files.pc98
head/sys/conf/files.powerpc
head/sys/conf/files.sparc64
head/sys/sys/libkern.h
Modified: head/sys/conf/files.arm
==============================================================================
--- head/sys/conf/files.arm Thu Oct 22 19:42:57 2015 (r289764)
+++ head/sys/conf/files.arm Thu Oct 22 20:28:37 2015 (r289765)
@@ -120,6 +120,7 @@ libkern/ashldi3.c standard
libkern/ashrdi3.c standard
libkern/divdi3.c standard
libkern/ffsl.c standard
+libkern/ffsll.c standard
libkern/fls.c standard
libkern/flsl.c standard
libkern/flsll.c standard
Modified: head/sys/conf/files.arm64
==============================================================================
--- head/sys/conf/files.arm64 Thu Oct 22 19:42:57 2015 (r289764)
+++ head/sys/conf/files.arm64 Thu Oct 22 20:28:37 2015 (r289765)
@@ -82,6 +82,7 @@ kern/subr_dummy_vdso_tc.c standard
libkern/bcmp.c standard
libkern/ffs.c standard
libkern/ffsl.c standard
+libkern/ffsll.c standard
libkern/fls.c standard
libkern/flsl.c standard
libkern/flsll.c standard
Modified: head/sys/conf/files.i386
==============================================================================
--- head/sys/conf/files.i386 Thu Oct 22 19:42:57 2015 (r289764)
+++ head/sys/conf/files.i386 Thu Oct 22 20:28:37 2015 (r289765)
@@ -530,6 +530,7 @@ kern/imgact_aout.c optional compat_aout
kern/imgact_gzip.c optional gzip
kern/subr_sfbuf.c standard
libkern/divdi3.c standard
+libkern/ffsll.c standard
libkern/flsll.c standard
libkern/memmove.c standard
libkern/memset.c standard
Modified: head/sys/conf/files.mips
==============================================================================
--- head/sys/conf/files.mips Thu Oct 22 19:42:57 2015 (r289764)
+++ head/sys/conf/files.mips Thu Oct 22 20:28:37 2015 (r289765)
@@ -56,6 +56,7 @@ kern/subr_sfbuf.c optional mips | mips
# gcc/clang runtime
libkern/ffsl.c standard
+libkern/ffsll.c standard
libkern/fls.c standard
libkern/flsl.c standard
libkern/flsll.c standard
Modified: head/sys/conf/files.pc98
==============================================================================
--- head/sys/conf/files.pc98 Thu Oct 22 19:42:57 2015 (r289764)
+++ head/sys/conf/files.pc98 Thu Oct 22 20:28:37 2015 (r289765)
@@ -222,6 +222,7 @@ kern/imgact_aout.c optional compat_aout
kern/imgact_gzip.c optional gzip
kern/subr_sfbuf.c standard
libkern/divdi3.c standard
+libkern/ffsll.c standard
libkern/flsll.c standard
libkern/memmove.c standard
libkern/memset.c standard
Modified: head/sys/conf/files.powerpc
==============================================================================
--- head/sys/conf/files.powerpc Thu Oct 22 19:42:57 2015 (r289764)
+++ head/sys/conf/files.powerpc Thu Oct 22 20:28:37 2015 (r289765)
@@ -87,6 +87,7 @@ libkern/cmpdi2.c optional powerpc
libkern/divdi3.c optional powerpc
libkern/ffs.c standard
libkern/ffsl.c standard
+libkern/ffsll.c standard
libkern/fls.c standard
libkern/flsl.c standard
libkern/flsll.c standard
Modified: head/sys/conf/files.sparc64
==============================================================================
--- head/sys/conf/files.sparc64 Thu Oct 22 19:42:57 2015 (r289764)
+++ head/sys/conf/files.sparc64 Thu Oct 22 20:28:37 2015 (r289765)
@@ -67,6 +67,7 @@ kern/syscalls.c optional ktr
kern/subr_sfbuf.c standard
libkern/ffs.c standard
libkern/ffsl.c standard
+libkern/ffsll.c standard
libkern/fls.c standard
libkern/flsl.c standard
libkern/flsll.c standard
Added: head/sys/libkern/ffsll.c
==============================================================================
--- /dev/null 00:00:00 1970 (empty, because file is newly added)
+++ head/sys/libkern/ffsll.c Thu Oct 22 20:28:37 2015 (r289765)
@@ -0,0 +1,48 @@
+/*-
+ * Copyright (c) 1990, 1993
+ * The Regents of the University of California. All rights reserved.
+ *
+ * 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.
+ * 4. 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.
+ */
+
+#include <sys/cdefs.h>
+__FBSDID("$FreeBSD$");
+
+#include <sys/libkern.h>
+
+/*
+ * Find First Set bit
+ */
+int
+ffsll(long long mask)
+{
+ int bit;
+
+ if (mask == 0)
+ return (0);
+ for (bit = 1; !(mask & 1); bit++)
+ mask = (unsigned long long)mask >> 1;
+ return (bit);
+}
Modified: head/sys/sys/libkern.h
==============================================================================
--- head/sys/sys/libkern.h Thu Oct 22 19:42:57 2015 (r289764)
+++ head/sys/sys/libkern.h Thu Oct 22 20:28:37 2015 (r289765)
@@ -89,6 +89,9 @@ int ffs(int);
#ifndef HAVE_INLINE_FFSL
int ffsl(long);
#endif
+#ifndef HAVE_INLINE_FFSLL
+int ffsll(long long);
+#endif
#ifndef HAVE_INLINE_FLS
int fls(int);
#endif
More information about the svn-src-head
mailing list