diff options
| author | David S. Miller <davem@davemloft.net> | 2013-01-10 16:15:32 -0800 |
|---|---|---|
| committer | David S. Miller <davem@davemloft.net> | 2013-01-10 16:15:32 -0800 |
| commit | b9de2dde539ff09325818fb65391accd2c4a1c79 (patch) | |
| tree | a225c18b8341efa52aaf954bf0f72b6122d07fee /sysdeps/sparc/sparc32/sparcv9/mul_1.S | |
| parent | 55d984e037cdeecf03268e1895d7cd1c5905dbd1 (diff) | |
| download | glibc-b9de2dde539ff09325818fb65391accd2c4a1c79.tar.gz glibc-b9de2dde539ff09325818fb65391accd2c4a1c79.tar.xz glibc-b9de2dde539ff09325818fb65391accd2c4a1c79.zip | |
Optimize sparc 32-bit V9 GMP multiply routines.
* sysdeps/sparc/sparc32/sparcv9/mul_1.S: Properly optimize for 32-bit sparc V9 rather than using V8 code. * sysdeps/sparc/sparc32/sparcv9/addmul_1.S: Likewise. * sysdeps/sparc/sparc32/sparcv9/submul_1.S: Likewise.
Diffstat (limited to 'sysdeps/sparc/sparc32/sparcv9/mul_1.S')
| -rw-r--r-- | sysdeps/sparc/sparc32/sparcv9/mul_1.S | 65 |
1 files changed, 64 insertions, 1 deletions
diff --git a/sysdeps/sparc/sparc32/sparcv9/mul_1.S b/sysdeps/sparc/sparc32/sparcv9/mul_1.S index 42284eada6..af51ee47e6 100644 --- a/sysdeps/sparc/sparc32/sparcv9/mul_1.S +++ b/sysdeps/sparc/sparc32/sparcv9/mul_1.S @@ -1 +1,64 @@ -#include <sparcv8/mul_1.S> +! SPARC v9 32-bit mpn_mul_1. +! +! Copyright 2010-2013 Free Software Foundation, Inc. +! +! This file is part of the GNU MP Library. +! +! The GNU MP 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 3 of the License, or (at +! your option) any later version. + +! The GNU MP 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 MP Library. If not, see http://www.gnu.org/licenses/. + +! INPUT PARAMETERS +! res_ptr %o0 +! s1_ptr %o1 +! size %o2 +! s2_limb %o3 + +#include <sysdep.h> + +ENTRY(__mpn_mul_1) + srl %o2, 0, %o2 + srl %o3, 0, %o3 + subcc %o2, 1, %o2 + be .Lfinal_one + clr %o5 + +.Ltop: + lduw [%o1+0], %g1 + lduw [%o1+4], %g2 + mulx %g1, %o3, %g3 + add %o1, 8, %o1 + mulx %g2, %o3, %o4 + sub %o2, 2, %o2 + add %o0, 8, %o0 + add %o5, %g3, %g3 + stw %g3, [%o0-8] + srlx %g3, 32, %o5 + add %o5, %o4, %o4 + stw %o4, [%o0-4] + brgz %o2, .Ltop + srlx %o4, 32, %o5 + + brlz,pt %o2, .Ldone + nop + +.Lfinal_one: + lduw [%o1+0], %g1 + mulx %g1, %o3, %g3 + add %o5, %g3, %g3 + stw %g3, [%o0+0] + srlx %g3, 32, %o5 + +.Ldone: + retl + mov %o5, %o0 +END(__mpn_mul_1) |