1dnl  PowerPC-64 mpn_mul_2 and mpn_addmul_2.
2
3dnl  Copyright 2013 Free Software Foundation, Inc.
4
5dnl  This file is part of the GNU MP Library.
6dnl
7dnl  The GNU MP Library is free software; you can redistribute it and/or modify
8dnl  it under the terms of either:
9dnl
10dnl    * the GNU Lesser General Public License as published by the Free
11dnl      Software Foundation; either version 3 of the License, or (at your
12dnl      option) any later version.
13dnl
14dnl  or
15dnl
16dnl    * the GNU General Public License as published by the Free Software
17dnl      Foundation; either version 2 of the License, or (at your option) any
18dnl      later version.
19dnl
20dnl  or both in parallel, as here.
21dnl
22dnl  The GNU MP Library is distributed in the hope that it will be useful, but
23dnl  WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
24dnl  or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
25dnl  for more details.
26dnl
27dnl  You should have received copies of the GNU General Public License and the
28dnl  GNU Lesser General Public License along with the GNU MP Library.  If not,
29dnl  see https://www.gnu.org/licenses/.
30
31include(`../config.m4')
32
33C                    cycles/limb    cycles/limb
34C			mul_2         addmul_2
35C POWER3/PPC630		 ?		 ?
36C POWER4/PPC970		 ?		 ?
37C POWER5		 ?		 ?
38C POWER6		 ?		 ?
39C POWER7-SMT4		 3		 3
40C POWER7-SMT2		 ?		 ?
41C POWER7-SMT1		 ?		 ?
42
43C INPUT PARAMETERS
44define(`rp', `r3')
45define(`up', `r4')
46define(`n',  `r5')
47define(`vp', `r6')
48
49define(`cy0', `r10')
50ifdef(`EXTRA_REGISTER',
51` define(`cy1', EXTRA_REGISTER)',
52` define(`cy1', `r31')')
53
54ifdef(`OPERATION_mul_2',`
55  define(`AM',		`')
56  define(`ADDX',	`addc')
57  define(`func',	`mpn_mul_2')
58')
59ifdef(`OPERATION_addmul_2',`
60  define(`AM',		`$1')
61  define(`ADDX',	`adde')
62  define(`func',	`mpn_addmul_2')
63')
64
65MULFUNC_PROLOGUE(mpn_mul_2 mpn_addmul_2)
66
67ASM_START()
68PROLOGUE(func)
69
70ifdef(`EXTRA_REGISTER',,`
71	std	r31, -8(r1)
72')
73	andi.	r12, n, 1
74	addi	r0, n, 1
75	srdi	r0, r0, 1
76	mtctr	r0
77	ld	r11, 0(vp)		C v0
78	li	cy0, 0
79	ld	r12, 8(vp)		C v1
80	li	cy1, 0
81	ld	r5, 0(up)
82	beq	L(lo0)
83	addi	up, up, -8
84	addi	rp, rp, -8
85	b	L(lo1)
86
87	ALIGN(32)
88L(top):
89AM(`	ld	r0, -8(rp)')
90	ld	r5, 0(up)
91AM(`	addc	r6, r6, r0')
92	ADDX	r7, r7, r8
93	addze	r9, r9
94	addc	r6, r6, cy0
95	adde	cy0, r7, cy1
96	std	r6, -8(rp)
97	addze	cy1, r9
98L(lo0):	mulld	r6, r11, r5		C v0 * u[i]  weight 0
99	mulhdu	r7, r11, r5		C v0 * u[i]  weight 1
100	mulld	r8, r12, r5		C v1 * u[i]  weight 1
101	mulhdu	r9, r12, r5		C v1 * u[i]  weight 2
102AM(`	ld	r0, 0(rp)')
103	ld	r5, 8(up)
104AM(`	addc	r6, r6, r0')
105	ADDX	r7, r7, r8
106	addze	r9, r9
107	addc	r6, r6, cy0
108	adde	cy0, r7, cy1
109	std	r6, 0(rp)
110	addze	cy1, r9
111L(lo1):	mulld	r6, r11, r5		C v0 * u[i]  weight 0
112	mulhdu	r7, r11, r5		C v0 * u[i]  weight 1
113	addi	up, up, 16
114	addi	rp, rp, 16
115	mulld	r8, r12, r5		C v1 * u[i]  weight 1
116	mulhdu	r9, r12, r5		C v1 * u[i]  weight 2
117	bdnz	L(top)
118
119L(end):
120AM(`	ld	r0, -8(rp)')
121AM(`	addc	r6, r6, r0')
122	ADDX	r7, r7, r8
123	addze	r9, r9
124	addc	r6, r6, cy0
125	std	r6, -8(rp)
126	adde	cy0, r7, cy1
127	addze	cy1, r9
128	std	cy0, 0(rp)
129	mr	r3, cy1
130
131ifdef(`EXTRA_REGISTER',,`
132	ld	r31, -8(r1)
133')
134	blr
135EPILOGUE()
136