aboutsummaryrefslogtreecommitdiff
path: root/vendor/gmp-6.3.0/mpn/x86/k6/mmx/logops_n.asm
blob: e17930bb2db4e1a01c58e4da8fb584285f442587 (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
dnl  AMD K6-2 mpn_and_n, mpn_andn_n, mpn_nand_n, mpn_ior_n, mpn_iorn_n,
dnl  mpn_nior_n, mpn_xor_n, mpn_xnor_n -- mpn bitwise logical operations.

dnl  Copyright 1999-2002 Free Software 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')

NAILS_SUPPORT(0-31)


C         alignment dst/src1/src2, A=0mod8, N=4mod8
C      A/A/A A/A/N A/N/A A/N/N N/A/A N/A/N N/N/A N/N/N
C
C K6-2  1.2   1.5   1.5   1.2   1.2   1.5   1.5   1.2   and,andn,ior,xor
C K6-2  1.5   1.75  2.0   1.75  1.75  2.0   1.75  1.5   iorn,xnor
C K6-2  1.75  2.0   2.0   2.0   2.0   2.0   2.0   1.75  nand,nior
C
C K6    1.5   1.68  1.75  1.2   1.75  1.75  1.68  1.5   and,andn,ior,xor
C K6    2.0   2.0   2.25  2.25  2.25  2.25  2.0   2.0   iorn,xnor
C K6    2.0   2.25  2.25  2.25  2.25  2.25  2.25  2.0   nand,nior


dnl  M4_p and M4_i are the MMX and integer instructions
dnl  M4_*_neg_dst means whether to negate the final result before writing
dnl  M4_*_neg_src2 means whether to negate the src2 values before using them

define(M4_choose_op,
m4_assert_numargs(7)
`ifdef(`OPERATION_$1',`
define(`M4_function',  `mpn_$1')
define(`M4_operation', `$1')
define(`M4_p',         `$2')
define(`M4_p_neg_dst', `$3')
define(`M4_p_neg_src2',`$4')
define(`M4_i',         `$5')
define(`M4_i_neg_dst', `$6')
define(`M4_i_neg_src2',`$7')
')')

dnl  xnor is done in "iorn" style because it's a touch faster than "nior"
dnl  style (the two are equivalent for xor).
dnl
dnl  pandn can't be used with nails.

M4_choose_op( and_n,  pand,0,0,  andl,0,0)
ifelse(GMP_NAIL_BITS,0,
`M4_choose_op(andn_n, pandn,0,0, andl,0,1)',
`M4_choose_op(andn_n, pand,0,1,  andl,0,1)')
M4_choose_op( nand_n, pand,1,0,  andl,1,0)
M4_choose_op( ior_n,  por,0,0,   orl,0,0)
M4_choose_op( iorn_n, por,0,1,   orl,0,1)
M4_choose_op( nior_n, por,1,0,   orl,1,0)
M4_choose_op( xor_n,  pxor,0,0,  xorl,0,0)
M4_choose_op( xnor_n, pxor,0,1,  xorl,0,1)

ifdef(`M4_function',,
`m4_error(`Unrecognised or undefined OPERATION symbol
')')

MULFUNC_PROLOGUE(mpn_and_n mpn_andn_n mpn_nand_n mpn_ior_n mpn_iorn_n mpn_nior_n mpn_xor_n mpn_xnor_n)


C void M4_function (mp_ptr dst, mp_srcptr src1, mp_srcptr src2,
C                   mp_size_t size);
C
C Do src1,size M4_operation src2,size, storing the result in dst,size.
C
C Unaligned movq loads and stores are a bit slower than aligned ones.  The
C test at the start of the routine checks the alignment of src1 and if
C necessary processes one limb separately at the low end to make it aligned.
C
C The raw speeds without this alignment switch are as follows.
C
C           alignment dst/src1/src2, A=0mod8, N=4mod8
C     A/A/A  A/A/N  A/N/A  A/N/N  N/A/A  N/A/N  N/N/A  N/N/N
C
C K6                 1.5    2.0                 1.5    2.0    and,andn,ior,xor
C K6                 1.75   2.2                 2.0    2.28   iorn,xnor
C K6                 2.0    2.25                2.35   2.28   nand,nior
C
C
C Future:
C
C K6 can do one 64-bit load per cycle so each of these routines should be
C able to approach 1.0 c/l, if aligned.  The basic and/andn/ior/xor might be
C able to get 1.0 with just a 4 limb loop, being 3 instructions per 2 limbs.
C The others are 4 instructions per 2 limbs, and so can only approach 1.0
C because there's nowhere to hide some loop control.

defframe(PARAM_SIZE,16)
defframe(PARAM_SRC2,12)
defframe(PARAM_SRC1,8)
defframe(PARAM_DST, 4)
deflit(`FRAME',0)

	TEXT
	ALIGN(32)
PROLOGUE(M4_function)
			movl	PARAM_SIZE, %ecx
			pushl	%ebx		FRAME_pushl()

			movl	PARAM_SRC1, %eax

			movl	PARAM_SRC2, %ebx
			cmpl	$1, %ecx

			movl	PARAM_DST, %edx
			ja	L(two_or_more)


			movl	(%ebx), %ecx
			popl	%ebx
ifelse(M4_i_neg_src2,1,`notl_or_xorl_GMP_NUMB_MASK(	%ecx)')
			M4_i	(%eax), %ecx
ifelse(M4_i_neg_dst,1,`	notl_or_xorl_GMP_NUMB_MASK(	%ecx)')
			movl	%ecx, (%edx)

			ret


L(two_or_more):
			C eax	src1
			C ebx	src2
			C ecx	size
			C edx	dst
			C esi
			C edi
			C ebp

			pushl	%esi		FRAME_pushl()
			testl	$4, %eax
			jz	L(alignment_ok)

			movl	(%ebx), %esi
			addl	$4, %ebx
ifelse(M4_i_neg_src2,1,`notl_or_xorl_GMP_NUMB_MASK(	%esi)')
			M4_i	(%eax), %esi
			addl	$4, %eax
ifelse(M4_i_neg_dst,1,`	notl_or_xorl_GMP_NUMB_MASK(	%esi)')
			movl	%esi, (%edx)
			addl	$4, %edx
			decl	%ecx

L(alignment_ok):
			movl	%ecx, %esi
			shrl	%ecx
			jnz	L(still_two_or_more)

			movl	(%ebx), %ecx
			popl	%esi
ifelse(M4_i_neg_src2,1,`notl_or_xorl_GMP_NUMB_MASK(	%ecx)')
			M4_i	(%eax), %ecx
ifelse(M4_i_neg_dst,1,`	notl_or_xorl_GMP_NUMB_MASK(	%ecx)')
			popl	%ebx
			movl	%ecx, (%edx)
			ret


L(still_two_or_more):
ifelse(eval(M4_p_neg_src2 || M4_p_neg_dst),1,`
			pcmpeqd	%mm7, %mm7		C all ones
ifelse(GMP_NAIL_BITS,0,,`psrld	$GMP_NAIL_BITS, %mm7')	C clear nails
')

			ALIGN(16)
L(top):
			C eax	src1
			C ebx	src2
			C ecx	counter
			C edx	dst
			C esi
			C edi
			C ebp
			C
			C carry bit is low of size

			movq	-8(%ebx,%ecx,8), %mm0
ifelse(M4_p_neg_src2,1,`pxor	%mm7, %mm0')
			M4_p	-8(%eax,%ecx,8), %mm0
ifelse(M4_p_neg_dst,1,`	pxor	%mm7, %mm0')
			movq	%mm0, -8(%edx,%ecx,8)

			loop	L(top)


			jnc	L(no_extra)

			movl	-4(%ebx,%esi,4), %ebx
ifelse(M4_i_neg_src2,1,`notl_or_xorl_GMP_NUMB_MASK(	%ebx)')
			M4_i	-4(%eax,%esi,4), %ebx
ifelse(M4_i_neg_dst,1,`	notl_or_xorl_GMP_NUMB_MASK(	%ebx)')
			movl	%ebx, -4(%edx,%esi,4)
L(no_extra):

			popl	%esi
			popl	%ebx
			emms_or_femms
			ret

EPILOGUE()