aboutsummaryrefslogtreecommitdiff
path: root/vendor/gmp-6.3.0/mpn/x86_64/bt1/mul_1.asm
blob: 4394d6e1fb433da736c9de7818b124dc485c0988 (plain) (blame)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
dnl  AMD64 mpn_mul_1 optimised for AMD bt1/bt2.

dnl  Copyright 2003-2005, 2007, 2008, 2011, 2012, 2019 Free Software
dnl  Foundation, Inc.

dnl  This file is part of the GNU MP Library.
dnl
dnl  The GNU MP Library is free software; you can redistribute it and/or modify
dnl  it under the terms of either:
dnl
dnl    * the GNU Lesser General Public License as published by the Free
dnl      Software Foundation; either version 3 of the License, or (at your
dnl      option) any later version.
dnl
dnl  or
dnl
dnl    * the GNU General Public License as published by the Free Software
dnl      Foundation; either version 2 of the License, or (at your option) any
dnl      later version.
dnl
dnl  or both in parallel, as here.
dnl
dnl  The GNU MP Library is distributed in the hope that it will be useful, but
dnl  WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
dnl  or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
dnl  for more details.
dnl
dnl  You should have received copies of the GNU General Public License and the
dnl  GNU Lesser General Public License along with the GNU MP Library.  If not,
dnl  see https://www.gnu.org/licenses/.

include(`../config.m4')

C	     cycles/limb
C AMD K8,K9	 4.53		old measurement
C AMD K10	 4.53		old measurement
C AMD bd1	 4.56		old measurement
C AMD bd2	 4.47		old measurement
C AMD bd3	 ?
C AMD bd4	 ?
C AMD zen	 ?
C AMD bt1	 5.12
C AMD bt2	 5.17
C Intel P4	12.6		old measurement
C Intel PNR	 4.53		old measurement
C Intel NHM	 4.36		old measurement
C Intel SBR	 3.0		old measurement
C Intel IBR	 2.55		old measurement
C Intel HWL	 2.28		old measurement
C Intel BWL	 2.36		old measurement
C Intel SKL	 2.39		old measurement
C Intel atom	21.0		old measurement
C Intel SLM	 9		old measurement
C Intel GLM	 ?
C VIA nano	 ?

C The loop of this code is the result of running a code generation and
C optimisation tool suite written by David Harvey and Torbjorn Granlund.

ABI_SUPPORT(DOS64)
ABI_SUPPORT(STD64)

C Standard parameters
define(`rp',              `%rdi')
define(`up',              `%rsi')
define(`n_param',         `%rdx')
define(`v0',              `%rcx')
define(`cy',              `%r8')
C Standard allocations
define(`n',               `%rbx')
define(`w0',              `%r8')
define(`w1',              `%r9')
define(`w2',              `%r10')
define(`w3',              `%r11')

C DOS64 parameters
IFDOS(` define(`rp',      `%rcx')    ') dnl
IFDOS(` define(`up',      `%rsi')    ') dnl
IFDOS(` define(`n_param', `%r8')     ') dnl
IFDOS(` define(`v0',      `%r9')     ') dnl
IFDOS(` define(`cy',      `56(%rsp)')') dnl
C DOS64 allocations
IFDOS(` define(`n',       `%rbx')    ') dnl
IFDOS(` define(`w0',      `%r8')     ') dnl
IFDOS(` define(`w1',      `%rdi')    ') dnl
IFDOS(` define(`w2',      `%r10')    ') dnl
IFDOS(` define(`w3',      `%r11')    ') dnl

	ALIGN(64)
PROLOGUE(mpn_mul_1)
IFDOS(`	push	%rsi		')
IFDOS(`	push	%rdi		')
IFDOS(`	mov	%rdx, %rsi	')

	push	%rbx
	mov	(up), %rax

	lea	(rp,n_param,8), rp
	lea	(up,n_param,8), up
	mov	n_param, n

	test	$1, R8(n_param)
	jne	L(bx1)

L(bx0):	mul	v0
	neg	n
	mov	%rax, w0
	mov	%rdx, w1
	test	$2, R8(n)
	jne	L(L2)

L(b00):	add	$2, n
	jmp	L(L0)

	ALIGN(16)
L(b11):	mov	%rax, w2
	mov	%rdx, w3
	neg	n
	inc	n
	jmp	L(L3)

	ALIGN(16)
L(bx1):	mul	v0
	test	$2, R8(n)
	jne	L(b11)

L(b01):	sub	$3, n
	jc	L(n1)
	mov	%rax, w2
	mov	%rdx, w3
	neg	n

	ALIGN(16)
L(top):	mov	-16(up,n,8), %rax
	mul	v0
	mov	%rax, w0
	mov	%rdx, w1
	mov	w2, -24(rp,n,8)
	add	w3, w0
	adc	$0, w1
L(L0):	mov	-8(up,n,8), %rax
	mul	v0
	mov	%rax, w2
	mov	%rdx, w3
	mov	w0, -16(rp,n,8)
	add	w1, w2
	adc	$0, w3
L(L3):	mov	(up,n,8), %rax
	mul	v0
	mov	%rax, w0
	mov	%rdx, w1
	mov	w2, -8(rp,n,8)
	add	w3, w0
	adc	$0, w1
L(L2):	mov	8(up,n,8), %rax
	mul	v0
	mov	%rax, w2
	mov	%rdx, w3
	mov	w0, (rp,n,8)
	add	w1, w2
	adc	$0, w3
	add	$4, n
	js	L(top)

L(end):	mov	w2, -8(rp)
	mov	w3, %rax
	pop	%rbx
IFDOS(`	pop	%rdi		')
IFDOS(`	pop	%rsi		')
	ret

	ALIGN(32)
L(n1):	mov	%rax, -8(rp)
	mov	%rdx, %rax
	pop	%rbx
IFDOS(`	pop	%rdi		')
IFDOS(`	pop	%rsi		')
	ret
EPILOGUE()

ASM_START()
	TEXT
	ALIGN(64)
PROLOGUE(mpn_mul_1c)
IFDOS(`	push	%rsi		')
IFDOS(`	push	%rdi		')
IFDOS(`	mov	%rdx, %rsi	')
	mov	cy, w2
	push	%rbx
	mov	(up), %rax

	lea	(rp,n_param,8), rp
	lea	(up,n_param,8), up
	mov	n_param, n

	test	$1, R8(n_param)
	jne	L(cx1)

L(cx0):	mul	v0
	neg	n
	mov	%rax, w0
	mov	%rdx, w1
	add	w2, w0
	adc	$0, w1
	test	$2, R8(n)
	jne	L(L2)

L(c00):	add	$2, n
	jmp	L(L0)

	ALIGN(16)
L(cx1):	mul	v0
	test	$2, R8(n)
	je	L(c01)

L(c11):	neg	n
	inc	n
	add	%rax, w2
	mov	%rdx, w3
	adc	$0, w3
	jmp	L(L3)

L(c01):	cmp	$1, n
	jz	L(m1)
	neg	n
	add	$3, n
	add	%rax, w2
	mov	%rdx, w3
	adc	$0, w3
	jmp	L(top)

	ALIGN(32)
L(m1):	add	%rax, w2
	mov	%rdx, %rax
	mov	w2, -8(rp)
	adc	$0, %rax
	pop	%rbx
IFDOS(`	pop	%rdi		')
IFDOS(`	pop	%rsi		')
	ret
EPILOGUE()