]>
git.ipfire.org Git - thirdparty/openssl.git/blob - crypto/bn/asm/sparcv9-gf2m.pl
2 # Copyright 2012-2016 The OpenSSL Project Authors. All Rights Reserved.
4 # Licensed under the Apache License 2.0 (the "License"). You may not use
5 # this file except in compliance with the License. You can obtain a copy
6 # in the file LICENSE in the source distribution or at
7 # https://www.openssl.org/source/license.html
10 # ====================================================================
11 # Written by Andy Polyakov <appro@openssl.org> for the OpenSSL
12 # project. The module is, however, dual licensed under OpenSSL and
13 # CRYPTOGAMS licenses depending on where you obtain it. For further
14 # details see http://www.openssl.org/~appro/cryptogams/.
15 # ====================================================================
19 # The module implements bn_GF2m_mul_2x2 polynomial multiplication used
20 # in bn_gf2m.c. It's kind of low-hanging mechanical port from C for
21 # the time being... Except that it has two code paths: one suitable
22 # for all SPARCv9 processors and one for VIS3-capable ones. Former
23 # delivers ~25-45% more, more for longer keys, heaviest DH and DSA
24 # verify operations on venerable UltraSPARC II. On T4 VIS3 code is
25 # ~100-230% faster than gcc-generated code and ~35-90% faster than
26 # the pure SPARCv9 code path.
28 $output = pop and open STDOUT
,">$output";
37 ($a1,$a2,$a4,$a8,$a12,$a48)=map("%o$_",(0..5));
38 ($lo,$hi,$b)=("%g1",$a8,"%o7"); $a=$lo;
41 #include <sparc_arch.h>
44 .register
%g2,#scratch
45 .register
%g3,#scratch
52 .globl bn_GF2m_mul_2x2
55 SPARC_LOAD_ADDRESS_LEAF
(OPENSSL_sparcv9cap_P
,%g1,%g5)
56 ld
[%g1+0],%g1 ! OPENSSL_sparcv9cap_P
[0]
58 andcc
%g1, SPARCV9_VIS3
, %g0
66 .word
0x95b262ab ! xmulx
%o1, %o3, %o2
67 .word
0x99b262cb ! xmulxhi
%o1, %o3, %o4
68 srlx
%o2, 32, %o1 ! 13 cycles later
78 save
%sp,-STACK_FRAME
-$locals,%sp
84 srlx
$a12,1,$a48 ! 0x7fff...
86 srlx
$a12,2,$a12 ! 0x3fff...
87 add
%sp,STACK_BIAS
+STACK_FRAME
,$tab
93 srax
$a4,63,@i[1] ! broadcast
61st bit
94 and $a48,$a4,$a4 ! (a
<<2)&0x7fff...
96 srax
$a2,63,@i[0] ! broadcast
62nd bit
97 and $a12,$a2,$a2 ! (a
<<1)&0x3fff...
98 srax
$a1,63,$lo ! broadcast
63rd bit
99 and $a48,$a1,$a1 ! (a
<<0)&0x1fff...
106 stx
%g0,[$tab+0*8] ! tab
[0]=0
108 stx
$a1,[$tab+1*8] ! tab
[1]=a1
109 stx
$a2,[$tab+2*8] ! tab
[2]=a2
111 stx
$a12,[$tab+3*8] ! tab
[3]=a1
^a2
114 stx
$a4,[$tab+4*8] ! tab
[4]=a4
116 stx
$a1,[$tab+5*8] ! tab
[5]=a1
^a4
118 stx
$a2,[$tab+6*8] ! tab
[6]=a2
^a4
120 stx
$a12,[$tab+7*8] ! tab
[7]=a1
^a2
^a4
123 stx
$a8,[$tab+8*8] ! tab
[8]=a8
125 stx
$a1,[$tab+9*8] ! tab
[9]=a1
^a8
127 stx
$a2,[$tab+10*8] ! tab
[10]=a2
^a8
129 stx
$a12,[$tab+11*8] ! tab
[11]=a1
^a2
^a8
132 stx
$a48,[$tab+12*8] ! tab
[12]=a4
^a8
134 stx
$a1,[$tab+13*8] ! tab
[13]=a1
^a4
^a8
136 stx
$a2,[$tab+14*8] ! tab
[14]=a2
^a4
^a8
138 stx
$a12,[$tab+15*8] ! tab
[15]=a1
^a2
^a4
^a8
143 and @i[0],`0xf<<3`,@i[0]
145 ldx
[$tab+@i[0]],@i[0]
148 and @i[1],`0xf<<3`,@i[1]
150 ldx
[$tab+@i[1]],@i[1]
156 and @i[0],`0xf<<3`,@i[0]
158 for($n=1;$n<14;$n++) {
160 sllx
@i[1],`$n*4`,@T[0]
161 ldx
[$tab+@i[0]],@i[0]
162 srlx
@i[1],`64-$n*4`,@T[1]
164 srlx
$b,`($n+2)*4`-3,@i[1]
166 and @i[1],`0xf<<3`,@i[1]
168 push(@i,shift(@i)); push(@T,shift(@T));
171 sllx
@i[1],`$n*4`,@T[0]
172 ldx
[$tab+@i[0]],@i[0]
173 srlx
@i[1],`64-$n*4`,@T[1]
176 sllx
@i[0],`($n+1)*4`,@T[0]
178 srlx
@i[0],`64-($n+1)*4`,@T[1]
191 .type bn_GF2m_mul_2x2
,#function
192 .size bn_GF2m_mul_2x2
,.-bn_GF2m_mul_2x2
193 .asciz
"GF(2^m) Multiplication for SPARCv9, CRYPTOGAMS by <appro\@openssl.org>"
197 $code =~ s/\`([^\`]*)\`/eval($1)/gem;
199 close STDOUT
or die "error closing STDOUT: $!";