1 /* S390 __mpn_addmul_1 -- Multiply a limb vector with a limb and add
2 the result to a second limb vector.
3 Copyright (C) 2000, 2001 Free Software Foundation, Inc.
4 Contributed by Martin Schwidefsky (schwidefsky@de.ibm.com).
5 This file is part of the GNU MP Library.
7 The GNU MP Library is free software; you can redistribute it and/or modify
8 it under the terms of the GNU Lesser General Public License as published by
9 the Free Software Foundation; either version 2.1 of the License, or (at your
10 option) any later version.
12 The GNU MP Library is distributed in the hope that it will be useful, but
13 WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
14 or FITNESS FOR A PARTICULAR PURPOSE. See the GNU Lesser General Public
15 License for more details.
17 You should have received a copy of the GNU Lesser General Public License
18 along with the GNU MP Library; see the file COPYING.LIB. If not,
19 see <http://www.gnu.org/licenses/>. */
30 #include "asm-syntax.h"
36 slr %r6,%r6 # cy_limb = 0
37 .L0: icm %r1,15,0(%r3) # get s1_ptr[i]
38 mr %r0,%r5 # umul_ppmm(prod_high,prod_low,s1_ptr[j],s2_limb)
44 .L2: alr %r1,%r6 # prod_low += cy_limb
45 lr %r6,%r0 # cy_limb = prod_high
47 ahi %r6,1 # + (prod_low < cy_limb)
48 .L3: al %r1,0(%r2) # prod_low += res_ptr[i]
55 lr %r2,%r6 # return cy_limb