1/* Multiply a limb vector by a single limb, for PowerPC.
2   Copyright (C) 1993-1995, 1997, 1999, 2000 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, write to the Free
17   Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA
18   02111-1307 USA.  */
19
20#include <sysdep.h>
21#include <bp-sym.h>
22#include <bp-asm.h>
23
24/* mp_limb_t mpn_addmul_1 (mp_ptr res_ptr, mp_srcptr s1_ptr,
25                           mp_size_t s1_size, mp_limb_t s2_limb)
26   Calculate res+s1*s2 and put result back in res; return carry.  */
27ENTRY (BP_SYM (__mpn_addmul_1))
28#if __BOUNDED_POINTERS__
29	slwi r10,r5,2		/* convert limbs to bytes */
30	CHECK_BOUNDS_BOTH_WIDE (r3, r8, r9, r10)
31	CHECK_BOUNDS_BOTH_WIDE (r4, r8, r9, r10)
32#endif
33	mtctr	r5
34
35	lwz	r0,0(r4)
36	mullw	r7,r0,r6
37	mulhwu	r10,r0,r6
38	lwz     r9,0(r3)
39	addc	r8,r7,r9
40	addi	r3,r3,-4		/* adjust res_ptr */
41	bdz	L(1)
42
43L(0):	lwzu	r0,4(r4)
44	stwu	r8,4(r3)
45	mullw	r8,r0,r6
46	adde	r7,r8,r10
47	mulhwu	r10,r0,r6
48	lwz     r9,4(r3)
49	addze   r10,r10
50	addc    r8,r7,r9
51	bdnz	L(0)
52
53L(1):	stw	r8,4(r3)
54	addze	r3,r10
55	blr
56END (BP_SYM (__mpn_addmul_1))
57