diff options
Diffstat (limited to 'gnu/lib/libgmp/mpn/sh/sh2/mul_1.s')
| -rw-r--r-- | gnu/lib/libgmp/mpn/sh/sh2/mul_1.s | 50 |
1 files changed, 50 insertions, 0 deletions
diff --git a/gnu/lib/libgmp/mpn/sh/sh2/mul_1.s b/gnu/lib/libgmp/mpn/sh/sh2/mul_1.s new file mode 100644 index 00000000000..7ca275671f0 --- /dev/null +++ b/gnu/lib/libgmp/mpn/sh/sh2/mul_1.s @@ -0,0 +1,50 @@ +! SH2 __mpn_mul_1 -- Multiply a limb vector with a limb and store +! the result in a second limb vector. + +! Copyright (C) 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 Library General Public License as published by +! the Free Software Foundation; either version 2 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 Library General Public +! License for more details. + +! You should have received a copy of the GNU Library General Public License +! along with the GNU MP Library; see the file COPYING.LIB. If not, write to +! the Free Software Foundation, Inc., 59 Temple Place - Suite 330, Boston, +! MA 02111-1307, USA. + + +! INPUT PARAMETERS +! res_ptr r4 +! s1_ptr r5 +! size r6 +! s2_limb r7 + + .text + .align 1 + .global ___mpn_mul_1 +___mpn_mul_1: + mov #0,r2 ! cy_limb = 0 + mov #0,r0 ! Keep r0 = 0 for entire loop + clrt + +Loop: mov.l @r5+,r3 + dmulu.l r3,r7 + sts macl,r1 + addc r2,r1 + sts mach,r2 + addc r0,r2 ! propagate carry to cy_limb (dt clobbers T) + dt r6 + mov.l r1,@r4 + bf.s Loop + add #4,r4 + + rts + mov r2,r0 |