1 files changed, 56 insertions, 0 deletions
diff --git a/libc/sysdeps/sparc/sparc64/fpu/multiarch/s_floorf-vis2.S b/libc/sysdeps/sparc/sparc64/fpu/multiarch/s_floorf-vis2.S
new file mode 100644
index 000000000..935fa853d
--- /dev/null
+++ b/libc/sysdeps/sparc/sparc64/fpu/multiarch/s_floorf-vis2.S
@@ -0,0 +1,56 @@
+/* Float floor function, sparc64 vis2 version.
+   Copyright (C) 2012-2013 Free Software Foundation, Inc.
+   This file is part of the GNU C Library.
+   Contributed by David S. Miller <davem@davemloft.net>, 2012.
+
+   The GNU C Library is free software; you can redistribute it and/or
+   modify it under the terms of the GNU Lesser General Public
+   License as published by the Free Software Foundation; either
+   version 2.1 of the License, or (at your option) any later version.
+
+   The GNU C Library 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
+   Lesser General Public License for more details.
+
+   You should have received a copy of the GNU Lesser General Public
+   License along with the GNU C Library; if not, see
+   <http://www.gnu.org/licenses/>.  */
+
+#include <sysdep.h>
+
+	/* 'siam' (Set Interval Arithmetic Mode) is used to quickly override
+	   the rounding mode during this routine.
+
+	   We add then subtract (or subtract than add if the initial
+	   value was negative) 2**23 to the value, then subtract it
+	   back out.
+
+	   This will clear out the fractional portion of the value and,
+	   with suitable 'siam' initiated rouding mode settings, round
+	   the final result in the proper direction.  */
+
+#define TWO_TWENTYTHREE	0x4b000000		/* 2**23 */
+
+#define ZERO		%f10			/* 0.0 */
+#define SIGN_BIT	%f12			/* -0.0 */
+
+ENTRY (__floorf_vis2)
+	sethi	%hi(TWO_TWENTYTHREE), %o2
+	fzeros	ZERO
+	fnegs	ZERO, SIGN_BIT
+	st	%o2, [%sp + STACK_BIAS + 128]
+	fabss	%f1, %f14
+	ld	[%sp + STACK_BIAS + 128], %f16
+	fcmps	%fcc3, %f14, %f16
+	fmovsuge %fcc3, ZERO, %f16
+	fands	%f1, SIGN_BIT, SIGN_BIT
+	fors	%f16, SIGN_BIT, %f16
+	siam	(1 << 2) | 3
+	fadds	%f1, %f16, %f5
+	siam	(1 << 2) | 0
+	fsubs	%f5, %f16, %f5
+	siam	(0 << 2)
+	retl
+	 fors	%f5, SIGN_BIT, %f0
+END (__floorf_vis2)