1dnl  PowerPC-64 mpn_mul_1 -- Multiply a limb vector with a limb and add
2dnl  the result to a second limb vector.
3
4dnl  Copyright 1999-2001, 2003, 2005 Free Software Foundation, Inc.
5
6dnl  This file is part of the GNU MP Library.
7dnl
8dnl  The GNU MP Library is free software; you can redistribute it and/or modify
9dnl  it under the terms of either:
10dnl
11dnl    * the GNU Lesser General Public License as published by the Free
12dnl      Software Foundation; either version 3 of the License, or (at your
13dnl      option) any later version.
14dnl
15dnl  or
16dnl
17dnl    * the GNU General Public License as published by the Free Software
18dnl      Foundation; either version 2 of the License, or (at your option) any
19dnl      later version.
20dnl
21dnl  or both in parallel, as here.
22dnl
23dnl  The GNU MP Library is distributed in the hope that it will be useful, but
24dnl  WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
25dnl  or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
26dnl  for more details.
27dnl
28dnl  You should have received copies of the GNU General Public License and the
29dnl  GNU Lesser General Public License along with the GNU MP Library.  If not,
30dnl  see https://www.gnu.org/licenses/.
31
32include(`../config.m4')
33
34C		cycles/limb
35C POWER3/PPC630:     ?
36C POWER4/PPC970:     10
37
38C INPUT PARAMETERS
39C rp	r3
40C up	r4
41C n	r5
42C v	r6,r7  or  r7,r8
43
44ASM_START()
45PROLOGUE(mpn_mul_1)
46
47ifdef(`BROKEN_LONGLONG_PARAM',
48`	rldimi	r8, r7, 32,0	C assemble vlimb from separate 32-bit arguments
49	mr	r6, r8
50',`
51	rldimi	r7, r6, 32,0	C assemble vlimb from separate 32-bit arguments
52	mr	r6, r7
53')
54	li	r7, 0		C cy_limb = 0
55	mtctr	r5
56	addic	r0, r0, 0
57	addi	r3, r3, -8
58	addi	r4, r4, -8
59
60L(oop):	ldu	r0, 8(r4)
61	mulld	r9, r0, r6
62	adde	r12, r9, r7	C add old high limb and new low limb
63	srdi	r5, r9, 32
64	srdi	r11, r7, 32
65	adde	r5, r5, r11	C add high limb parts, set cy
66	mulhdu	r7, r0, r6
67	stdu	r12, 8(r3)
68	bdnz	L(oop)
69
70	addze	r4, r7
71	srdi	r3, r4, 32
72	blr
73EPILOGUE()
74