mirror of
https://sourceware.org/git/glibc.git
synced 2024-11-30 16:50:07 +00:00
103 lines
2.2 KiB
ArmAsm
103 lines
2.2 KiB
ArmAsm
! SPARC v8 __mpn_mul_1 -- Multiply a limb vector with a single limb and
|
|
! store the product in a second limb vector.
|
|
|
|
! Copyright (C) 1992, 1994, 1995 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 2.1 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; see the file COPYING.LIB. 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)
|
|
sll %o2,4,%g1
|
|
mov %o7,%g4 ! Save return address register
|
|
and %g1,(4-1)<<4,%g1
|
|
1: call 2f
|
|
add %o7,3f-1b,%g3
|
|
2: mov %g4,%o7 ! Restore return address register
|
|
jmp %g3+%g1
|
|
ld [%o1+0],%o4 ! 1
|
|
|
|
.align 4
|
|
3:
|
|
LOC(00):
|
|
add %o0,-4,%o0
|
|
add %o1,-4,%o1
|
|
b LOC(loop00) /* 4, 8, 12, ... */
|
|
orcc %g0,%g0,%g2
|
|
LOC(01):
|
|
b LOC(loop01) /* 1, 5, 9, ... */
|
|
orcc %g0,%g0,%g2
|
|
nop
|
|
nop
|
|
LOC(10):
|
|
add %o0,-12,%o0 /* 2, 6, 10, ... */
|
|
add %o1,4,%o1
|
|
b LOC(loop10)
|
|
orcc %g0,%g0,%g2
|
|
nop
|
|
LOC(11):
|
|
add %o0,-8,%o0 /* 3, 7, 11, ... */
|
|
add %o1,-8,%o1
|
|
b LOC(loop11)
|
|
orcc %g0,%g0,%g2
|
|
|
|
LOC(loop):
|
|
addcc %g3,%g2,%g3 ! 1
|
|
ld [%o1+4],%o4 ! 2
|
|
st %g3,[%o0+0] ! 1
|
|
rd %y,%g2 ! 1
|
|
LOC(loop00):
|
|
umul %o4,%o3,%g3 ! 2
|
|
addxcc %g3,%g2,%g3 ! 2
|
|
ld [%o1+8],%o4 ! 3
|
|
st %g3,[%o0+4] ! 2
|
|
rd %y,%g2 ! 2
|
|
LOC(loop11):
|
|
umul %o4,%o3,%g3 ! 3
|
|
addxcc %g3,%g2,%g3 ! 3
|
|
ld [%o1+12],%o4 ! 4
|
|
add %o1,16,%o1
|
|
st %g3,[%o0+8] ! 3
|
|
rd %y,%g2 ! 3
|
|
LOC(loop10):
|
|
umul %o4,%o3,%g3 ! 4
|
|
addxcc %g3,%g2,%g3 ! 4
|
|
ld [%o1+0],%o4 ! 1
|
|
st %g3,[%o0+12] ! 4
|
|
add %o0,16,%o0
|
|
rd %y,%g2 ! 4
|
|
addx %g0,%g2,%g2
|
|
LOC(loop01):
|
|
addcc %o2,-4,%o2
|
|
bg LOC(loop)
|
|
umul %o4,%o3,%g3 ! 1
|
|
|
|
addcc %g3,%g2,%g3 ! 4
|
|
st %g3,[%o0+0] ! 4
|
|
rd %y,%g2 ! 4
|
|
retl
|
|
addx %g0,%g2,%o0
|
|
|
|
END(__mpn_mul_1)
|