* 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.

1 files changed, 43 insertions, 0 deletions

diff --git a/gold/ffsll.c b/gold/ffsll.c
new file mode 100644
index 00000000000..aeae845f094
--- /dev/null
+++ b/gold/ffsll.c
@@ -0,0 +1,43 @@
+/* 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;
+}