From dfdb8ff2998cfcaf3c8978f522c061fe8a68fe68 Mon Sep 17 00:00:00 2001 From: "David S. Miller" Date: Thu, 1 Mar 2012 20:43:38 -0800 Subject: 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. --- sysdeps/sparc/sparc32/fpu/s_signbit.S | 32 ++++++++++++++++++++++++++++++++ 1 file changed, 32 insertions(+) create mode 100644 sysdeps/sparc/sparc32/fpu/s_signbit.S (limited to 'sysdeps/sparc/sparc32/fpu/s_signbit.S') diff --git a/sysdeps/sparc/sparc32/fpu/s_signbit.S b/sysdeps/sparc/sparc32/fpu/s_signbit.S new file mode 100644 index 0000000000..3756bf431a --- /dev/null +++ b/sysdeps/sparc/sparc32/fpu/s_signbit.S @@ -0,0 +1,32 @@ +/* signbit(). sparc32 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 + . */ + +#include + +ENTRY (__signbit) + retl + srl %o0, 31, %o0 +END (__signbit) +weak_alias (__signbit, signbit) + +/* On 32-bit the double version will also always work for + single-precision since in both cases the word with the + sign bit in it is passed always in register %o0. */ +strong_alias (__signbit, __signbitf) +hidden_def (__signbitf) +weak_alias (__signbitf, signbitf) -- cgit 1.4.1