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authorDavid S. Miller <davem@davemloft.net>2012-03-01 20:43:38 -0800
committerDavid S. Miller <davem@davemloft.net>2012-03-01 20:43:38 -0800
commitdfdb8ff2998cfcaf3c8978f522c061fe8a68fe68 (patch)
tree80f8b00fe1952d69f9229d34eebc91bea9143f30 /sysdeps/sparc/sparc64/fpu/s_signbit.S
parentead89f9695d358ec2e67cafbda13f44e5aaf5b53 (diff)
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Optimized sparc assembler for signbit{,f,l} and some variants of isnan.
	* sysdeps/sparc/sparc32/fpu/s_signbit.S: New file.
	* sysdeps/sparc/sparc32/fpu/s_signbitf.S: New file.
	* sysdeps/sparc/sparc32/fpu/s_signbitl.S: New file.
	* sysdeps/sparc/sparc32/sparcv9/fpu/s_isnan.S: New file.
	* sysdeps/sparc/sparc64/fpu/s_isnan.S: New file.
	* sysdeps/sparc/sparc64/fpu/s_isnanf.S: New file.
	* sysdeps/sparc/sparc64/fpu/s_signbit.S: New file.
	* sysdeps/sparc/sparc64/fpu/s_signbitf.S: New file.
	* sysdeps/sparc/sparc64/fpu/s_signbitl.S: New file.
Diffstat (limited to 'sysdeps/sparc/sparc64/fpu/s_signbit.S')
-rw-r--r--sysdeps/sparc/sparc64/fpu/s_signbit.S34
1 files changed, 34 insertions, 0 deletions
diff --git a/sysdeps/sparc/sparc64/fpu/s_signbit.S b/sysdeps/sparc/sparc64/fpu/s_signbit.S
new file mode 100644
index 0000000000..3c1ea000f1
--- /dev/null
+++ b/sysdeps/sparc/sparc64/fpu/s_signbit.S
@@ -0,0 +1,34 @@
+/* signbit().  sparc64 version.
+   Copyright (C) 2012 Free Software Foundation, Inc.
+   This file is part of the GNU C Library.
+
+   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>
+
+ENTRY (__signbit)
+	st	%f0, [%sp + STACK_BIAS + 128]
+	ld	[%sp + STACK_BIAS + 128], %o0
+	retl
+	 srl	%o0, 31, %o0
+END (__signbit)
+weak_alias (__signbit, signbit)
+
+/* On 64-bit the double version will also always work for
+   long-double-precision since in both cases the word with the
+   sign bit in it is passed always in register %f0.  */
+strong_alias (__signbit, __signbitl)
+hidden_def (__signbitl)
+weak_alias (__signbitl, signbitl)