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authorIan Lance Taylor <ian@airs.com>2009-03-28 05:22:30 +0000
committerIan Lance Taylor <ian@airs.com>2009-03-28 05:22:30 +0000
commitfd03461a93f2e080e317da40dc4929ee437ffb76 (patch)
treeb39eddbb67236e3cb29f78f93ef59b9737c8fe78 /gold/ffsll.c
parent1b31f75d637045dd1fb0c8ee3dedf21ee6f147f5 (diff)
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* ffsll.c: New file.
* configure.ac: Call AC_REPLACE_FUNCS on ffsll. * gold.h (ffsll): Declare if HAVE_FFSLL is not defined. * ftruncate.c (ftruncate): Declare before definition. * mremap.c (mremap): Likewise. * pread.c (pread): Likewise. * configure, Makefile.in, config.in: Rebuild.
Diffstat (limited to 'gold/ffsll.c')
-rw-r--r--gold/ffsll.c43
1 files changed, 43 insertions, 0 deletions
diff --git a/gold/ffsll.c b/gold/ffsll.c
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--- /dev/null
+++ b/gold/ffsll.c
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+/* ffsll.c -- version of ffsll for gold. */
+
+/* Copyright 2009 Free Software Foundation, Inc.
+ Written by Ian Lance Taylor <iant@google.com>.
+
+ This file is part of gold.
+
+ This program is free software; you can redistribute it and/or modify
+ it under the terms of the GNU General Public License as published by
+ the Free Software Foundation; either version 3 of the License, or
+ (at your option) any later version.
+
+ This program is distributed in the hope that it will be useful,
+ but WITHOUT ANY WARRANTY; without even the implied warranty of
+ MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ GNU General Public License for more details.
+
+ You should have received a copy of the GNU General Public License
+ along with this program; if not, write to the Free Software
+ Foundation, Inc., 51 Franklin Street - Fifth Floor, Boston,
+ MA 02110-1301, USA. */
+
+#include "config.h"
+
+#include <string.h>
+
+extern int ffsll (long long);
+
+/* This file implements ffsll for systems which don't have it. We use
+ ffsll if possible because gcc supports it as a builtin which will
+ use a machine instruction if there is one. */
+
+int
+ffsll (long long arg)
+{
+ unsigned long long i;
+ int ret;
+
+ ret = 0;
+ for (i = (unsigned long long) arg; i != 0; i >>= 1)
+ ++ret;
+ return ret;
+}