glibc/sysdeps/sparc/sparc32/sparcv9/addmul_1.S
Siddhesh Poyarekar 30891f35fa Remove "Contributed by" lines
We stopped adding "Contributed by" or similar lines in sources in 2012
in favour of git logs and keeping the Contributors section of the
glibc manual up to date.  Removing these lines makes the license
header a bit more consistent across files and also removes the
possibility of error in attribution when license blocks or files are
copied across since the contributed-by lines don't actually reflect
reality in those cases.

Move all "Contributed by" and similar lines (Written by, Test by,
etc.) into a new file CONTRIBUTED-BY to retain record of these
contributions.  These contributors are also mentioned in
manual/contrib.texi, so we just maintain this additional record as a
courtesy to the earlier developers.

The following scripts were used to filter a list of files to edit in
place and to clean up the CONTRIBUTED-BY file respectively.  These
were not added to the glibc sources because they're not expected to be
of any use in future given that this is a one time task:

https://gist.github.com/siddhesh/b5ecac94eabfd72ed2916d6d8157e7dc
https://gist.github.com/siddhesh/15ea1f5e435ace9774f485030695ee02

Reviewed-by: Carlos O'Donell <carlos@redhat.com>
2021-09-03 22:06:44 +05:30

81 lines
2.1 KiB
ArmAsm

! SPARC v9 32-bit __mpn_addmul_1 -- Multiply a limb vector with a limb
! and add the result to a second limb vector.
!
! Copyright (C) 2013-2021 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
! <https://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_addmul_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
clr 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
add tmp3, tmp64_1, tmp64_1
add carry, tmp64_1, tmp64_1
stw tmp64_1, [res_ptr - 0x08]
srlx tmp64_1, 32, carry
add tmp4, tmp64_2, tmp64_2
add carry, tmp64_2, tmp64_2
stw tmp64_2, [res_ptr - 0x04]
brgz sz, .Lloop
srlx tmp64_2, 32, carry
brlz,pt sz, .Lfinish
nop
.Lfinal_limb:
lduw [s1_ptr + 0x00], tmp1
lduw [res_ptr + 0x00], tmp3
mulx tmp1, s2_limb, tmp64_1
add tmp3, tmp64_1, tmp64_1
add carry, tmp64_1, tmp64_1
stw tmp64_1, [res_ptr + 0x00]
srlx tmp64_1, 32, carry
.Lfinish:
jmpl %i7 + 0x8, %g0
restore carry, 0, %o0
END(__mpn_addmul_1)