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
|
dnl Intel Pentium mpn_and_n,...,mpn_xnor_n -- bitwise logical operations.
dnl Copyright 2001, 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')
C P5: 3.0 c/l and, ior, xor
C 3.5 c/l andn, iorn, nand, nior, xnor
define(M4_choose_op,
`ifdef(`OPERATION_$1',`
define(`M4_function', `mpn_$1')
define(`M4_want_pre', `$4')
define(`M4op', `$3')
define(`M4_want_post',`$2')
')')
define(M4pre, `ifelse(M4_want_pre, yes,`$1')')
define(M4post,`ifelse(M4_want_post,yes,`$1')')
M4_choose_op( and_n, , andl, )
M4_choose_op( andn_n, , andl, yes)
M4_choose_op( nand_n, yes, andl, )
M4_choose_op( ior_n, , orl, )
M4_choose_op( iorn_n, , orl, yes)
M4_choose_op( nior_n, yes, orl, )
M4_choose_op( xor_n, , xorl, )
M4_choose_op( xnor_n, yes, xorl, )
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)
NAILS_SUPPORT(0-31)
C void M4_function (mp_ptr wp, mp_srcptr xp, mp_srcptr yp, mp_size_t size);
C
C Nothing complicated here, just some care to avoid data cache bank clashes
C and AGIs.
C
C We're one register short of being able to do a simple 4 loads, 2 ops, 2
C stores. Instead %ebp is juggled a bit and nops are introduced to keep the
C pairings as intended. An in-place operation would free up a register, for
C an 0.5 c/l speedup, if that's worth bothering with.
C
C This code seems best for P55 too. Data alignment is a big problem for MMX
C and the pairing restrictions on movq and integer instructions make life
C difficult.
defframe(PARAM_SIZE,16)
defframe(PARAM_YP, 12)
defframe(PARAM_XP, 8)
defframe(PARAM_WP, 4)
TEXT
ALIGN(8)
PROLOGUE(M4_function)
deflit(`FRAME',0)
pushl %ebx FRAME_pushl()
pushl %esi FRAME_pushl()
pushl %edi FRAME_pushl()
pushl %ebp FRAME_pushl()
movl PARAM_SIZE, %ecx
movl PARAM_XP, %ebx
movl PARAM_YP, %esi
movl PARAM_WP, %edi
shrl %ecx
jnc L(entry)
movl (%ebx,%ecx,8), %eax C risk of data cache bank clash here
movl (%esi,%ecx,8), %edx
M4pre(` notl_or_xorl_GMP_NUMB_MASK(%edx)')
M4op %edx, %eax
M4post(`xorl $GMP_NUMB_MASK, %eax')
orl %ecx, %ecx
movl %eax, (%edi,%ecx,8)
jz L(done)
jmp L(entry)
L(top):
C eax
C ebx xp
C ecx counter, limb pairs, decrementing
C edx
C esi yp
C edi wp
C ebp
M4op %ebp, %edx
nop
M4post(`xorl $GMP_NUMB_MASK, %eax')
M4post(`xorl $GMP_NUMB_MASK, %edx')
movl %eax, 4(%edi,%ecx,8)
movl %edx, (%edi,%ecx,8)
L(entry):
movl -4(%ebx,%ecx,8), %ebp
nop
movl -4(%esi,%ecx,8), %eax
movl -8(%esi,%ecx,8), %edx
M4pre(` xorl $GMP_NUMB_MASK, %eax')
M4pre(` xorl $GMP_NUMB_MASK, %edx')
M4op %ebp, %eax
movl -8(%ebx,%ecx,8), %ebp
decl %ecx
jnz L(top)
M4op %ebp, %edx
nop
M4post(`xorl $GMP_NUMB_MASK, %eax')
M4post(`xorl $GMP_NUMB_MASK, %edx')
movl %eax, 4(%edi,%ecx,8)
movl %edx, (%edi,%ecx,8)
L(done):
popl %ebp
popl %edi
popl %esi
popl %ebx
ret
EPILOGUE()
|
