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author | Zack Weinberg <zackw@panix.com> | 2017-06-08 15:39:03 -0400 |
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committer | Zack Weinberg <zackw@panix.com> | 2017-06-08 15:39:03 -0400 |
commit | 5046dbb4a7eba5eccfd258f92f4735c9ffc8d069 (patch) | |
tree | 4470480d904b65cf14ca524f96f79eca818c3eaf /REORG.TODO/sysdeps/sparc/sparc32/sparcv9/submul_1.S | |
parent | 199fc19d3aaaf57944ef036e15904febe877fc93 (diff) | |
download | glibc-zack/build-layout-experiment.tar.gz glibc-zack/build-layout-experiment.tar.xz glibc-zack/build-layout-experiment.zip |
Prepare for radical source tree reorganization. zack/build-layout-experiment
All top-level files and directories are moved into a temporary storage directory, REORG.TODO, except for files that will certainly still exist in their current form at top level when we're done (COPYING, COPYING.LIB, LICENSES, NEWS, README), all old ChangeLog files (which are moved to the new directory OldChangeLogs, instead), and the generated file INSTALL (which is just deleted; in the new order, there will be no generated files checked into version control).
Diffstat (limited to 'REORG.TODO/sysdeps/sparc/sparc32/sparcv9/submul_1.S')
-rw-r--r-- | REORG.TODO/sysdeps/sparc/sparc32/sparcv9/submul_1.S | 82 |
1 files changed, 82 insertions, 0 deletions
diff --git a/REORG.TODO/sysdeps/sparc/sparc32/sparcv9/submul_1.S b/REORG.TODO/sysdeps/sparc/sparc32/sparcv9/submul_1.S new file mode 100644 index 0000000000..52b7d35aa4 --- /dev/null +++ b/REORG.TODO/sysdeps/sparc/sparc32/sparcv9/submul_1.S @@ -0,0 +1,82 @@ +! SPARC v9 32-bit __mpn_submul_1 -- Multiply a limb vector with a limb +! and subtract the result from a second limb vector. +! +! Copyright (C) 2013-2017 Free Software Foundation, Inc. +! This file is part of the GNU C Library. +! Contributed by David S. Miller <davem@davemloft.net> +! +! 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> + +#define res_ptr %i0 +#define s1_ptr %i1 +#define sz_arg %i2 +#define s2l_arg %i3 +#define sz %o4 +#define carry %o5 +#define s2_limb %g1 +#define tmp1 %l0 +#define tmp2 %l1 +#define tmp3 %l2 +#define tmp4 %l3 +#define tmp64_1 %g3 +#define tmp64_2 %o3 + +ENTRY(__mpn_submul_1) + save %sp, -96, %sp + srl sz_arg, 0, sz + srl s2l_arg, 0, s2_limb + subcc sz, 1, sz + be,pn %icc, .Lfinal_limb + subcc %g0, 0, carry + +.Lloop: + lduw [s1_ptr + 0x00], tmp1 + lduw [res_ptr + 0x00], tmp3 + lduw [s1_ptr + 0x04], tmp2 + lduw [res_ptr + 0x04], tmp4 + mulx tmp1, s2_limb, tmp64_1 + add s1_ptr, 8, s1_ptr + mulx tmp2, s2_limb, tmp64_2 + sub sz, 2, sz + add res_ptr, 8, res_ptr + addx carry, tmp64_1, tmp64_1 + srlx tmp64_1, 32, carry + subcc tmp3, tmp64_1, tmp64_1 + stw tmp64_1, [res_ptr - 0x08] + addx carry, tmp64_2, tmp64_2 + srlx tmp64_2, 32, carry + subcc tmp4, tmp64_2, tmp64_2 + brgz sz, .Lloop + stw tmp64_2, [res_ptr - 0x04] + + brlz,pt sz, .Lfinish + nop + +.Lfinal_limb: + lduw [s1_ptr + 0x00], tmp1 + lduw [res_ptr + 0x00], tmp3 + mulx tmp1, s2_limb, tmp64_1 + addx carry, tmp64_1, tmp64_1 + srlx tmp64_1, 32, carry + subcc tmp3, tmp64_1, tmp64_1 + stw tmp64_1, [res_ptr + 0x00] + +.Lfinish: + addx carry, 0, carry + jmpl %i7 + 0x8, %g0 + restore carry, 0, %o0 +END(__mpn_submul_1) |