1/* Multiply a limb vector by a single limb, for PowerPC.
2   Copyright (C) 1993-2022 Free Software Foundation, Inc.
3   This file is part of the GNU C Library.
4
5   The GNU C Library is free software; you can redistribute it and/or
6   modify it under the terms of the GNU Lesser General Public
7   License as published by the Free Software Foundation; either
8   version 2.1 of the License, or (at your option) any later version.
9
10   The GNU C Library is distributed in the hope that it will be useful,
11   but WITHOUT ANY WARRANTY; without even the implied warranty of
12   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
13   Lesser General Public License for more details.
14
15   You should have received a copy of the GNU Lesser General Public
16   License along with the GNU C Library; if not, see
17   <https://www.gnu.org/licenses/>.  */
18
19#include <sysdep.h>
20
21/* mp_limb_t mpn_addmul_1 (mp_ptr res_ptr, mp_srcptr s1_ptr,
22                           mp_size_t s1_size, mp_limb_t s2_limb)
23   Calculate res+s1*s2 and put result back in res; return carry.  */
24ENTRY (__mpn_addmul_1)
25	mtctr	r5
26
27	lwz	r0,0(r4)
28	mullw	r7,r0,r6
29	mulhwu	r10,r0,r6
30	lwz     r9,0(r3)
31	addc	r8,r7,r9
32	addi	r3,r3,-4		/* adjust res_ptr */
33	bdz	L(1)
34
35L(0):	lwzu	r0,4(r4)
36	stwu	r8,4(r3)
37	mullw	r8,r0,r6
38	adde	r7,r8,r10
39	mulhwu	r10,r0,r6
40	lwz     r9,4(r3)
41	addze   r10,r10
42	addc    r8,r7,r9
43	bdnz	L(0)
44
45L(1):	stw	r8,4(r3)
46	addze	r3,r10
47	blr
48END (__mpn_addmul_1)
49