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| author | David S. Miller <davem@davemloft.net> | 2012-03-01 20:43:38 -0800 |
|---|---|---|
| committer | David S. Miller <davem@davemloft.net> | 2012-03-01 20:43:38 -0800 |
| commit | dfdb8ff2998cfcaf3c8978f522c061fe8a68fe68 (patch) | |
| tree | 80f8b00fe1952d69f9229d34eebc91bea9143f30 /sysdeps/sparc/sparc64/fpu/s_signbit.S | |
| parent | ead89f9695d358ec2e67cafbda13f44e5aaf5b53 (diff) | |
| download | glibc-dfdb8ff2998cfcaf3c8978f522c061fe8a68fe68.zip glibc-dfdb8ff2998cfcaf3c8978f522c061fe8a68fe68.tar.gz glibc-dfdb8ff2998cfcaf3c8978f522c061fe8a68fe68.tar.bz2 | |
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.S | 34 |
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 0000000..3c1ea00 --- /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) |