diff options
Diffstat (limited to 'gmp/mpn/sh/sh2/addmul_1.s')
| -rw-r--r-- | gmp/mpn/sh/sh2/addmul_1.s | 51 |
1 files changed, 51 insertions, 0 deletions
diff --git a/gmp/mpn/sh/sh2/addmul_1.s b/gmp/mpn/sh/sh2/addmul_1.s new file mode 100644 index 0000000000..df22deaf5c --- /dev/null +++ b/gmp/mpn/sh/sh2/addmul_1.s @@ -0,0 +1,51 @@ +! SH2 __gmpn_addmul_1 -- Multiply a limb vector with a limb and add +! the result to a second limb vector. + +! Copyright 1995, 2000 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 r4 +! s1_ptr r5 +! size r6 +! s2_limb r7 + + .text + .align 1 + .global ___gmpn_addmul_1 +___gmpn_addmul_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 ! lo_prod += old cy_limb + sts mach,r2 ! new cy_limb = hi_prod + mov.l @r4,r3 + addc r0,r2 ! cy_limb += T, T = 0 + addc r3,r1 + addc r0,r2 ! cy_limb += T, T = 0 + dt r6 + mov.l r1,@r4 + bf.s Loop + add #4,r4 + + rts + mov r2,r0 |