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Diffstat (limited to 'src/lib/libcrypto/des/asm/crypt586.pl')
-rw-r--r--src/lib/libcrypto/des/asm/crypt586.pl208
1 files changed, 0 insertions, 208 deletions
diff --git a/src/lib/libcrypto/des/asm/crypt586.pl b/src/lib/libcrypto/des/asm/crypt586.pl
deleted file mode 100644
index 1d04ed6def..0000000000
--- a/src/lib/libcrypto/des/asm/crypt586.pl
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1#!/usr/local/bin/perl
2#
3# The inner loop instruction sequence and the IP/FP modifications are from
4# Svend Olaf Mikkelsen <svolaf@inet.uni-c.dk>
5# I've added the stuff needed for crypt() but I've not worried about making
6# things perfect.
7#
8
9push(@INC,"perlasm","../../perlasm");
10require "x86asm.pl";
11
12&asm_init($ARGV[0],"crypt586.pl");
13
14$L="edi";
15$R="esi";
16
17&external_label("DES_SPtrans");
18&fcrypt_body("fcrypt_body");
19&asm_finish();
20
21sub fcrypt_body
22 {
23 local($name,$do_ip)=@_;
24
25 &function_begin($name,"EXTRN _DES_SPtrans:DWORD");
26
27 &comment("");
28 &comment("Load the 2 words");
29 $trans="ebp";
30
31 &xor( $L, $L);
32 &xor( $R, $R);
33
34 # PIC-ification:-)
35 &picmeup("edx","DES_SPtrans");
36 #if ($cpp) { &picmeup("edx","DES_SPtrans"); }
37 #else { &lea("edx",&DWP("DES_SPtrans")); }
38 &push("edx"); # becomes &swtmp(1)
39 #
40 &mov($trans,&wparam(1)); # reloaded with DES_SPtrans in D_ENCRYPT
41
42 &push(&DWC(25)); # add a variable
43
44 &set_label("start");
45 for ($i=0; $i<16; $i+=2)
46 {
47 &comment("");
48 &comment("Round $i");
49 &D_ENCRYPT($i,$L,$R,$i*2,$trans,"eax","ebx","ecx","edx");
50
51 &comment("");
52 &comment("Round ".sprintf("%d",$i+1));
53 &D_ENCRYPT($i+1,$R,$L,($i+1)*2,$trans,"eax","ebx","ecx","edx");
54 }
55 &mov("ebx", &swtmp(0));
56 &mov("eax", $L);
57 &dec("ebx");
58 &mov($L, $R);
59 &mov($R, "eax");
60 &mov(&swtmp(0), "ebx");
61 &jnz(&label("start"));
62
63 &comment("");
64 &comment("FP");
65 &mov("edx",&wparam(0));
66
67 &FP_new($R,$L,"eax",3);
68 &mov(&DWP(0,"edx","",0),"eax");
69 &mov(&DWP(4,"edx","",0),$L);
70
71 &add("esp",8); # remove variables
72
73 &function_end($name);
74 }
75
76sub D_ENCRYPT
77 {
78 local($r,$L,$R,$S,$trans,$u,$tmp1,$tmp2,$t)=@_;
79
80 &mov( $u, &wparam(2)); # 2
81 &mov( $t, $R);
82 &shr( $t, 16); # 1
83 &mov( $tmp2, &wparam(3)); # 2
84 &xor( $t, $R); # 1
85
86 &and( $u, $t); # 2
87 &and( $t, $tmp2); # 2
88
89 &mov( $tmp1, $u);
90 &shl( $tmp1, 16); # 1
91 &mov( $tmp2, $t);
92 &shl( $tmp2, 16); # 1
93 &xor( $u, $tmp1); # 2
94 &xor( $t, $tmp2); # 2
95 &mov( $tmp1, &DWP(&n2a($S*4),$trans,"",0)); # 2
96 &xor( $u, $tmp1);
97 &mov( $tmp2, &DWP(&n2a(($S+1)*4),$trans,"",0)); # 2
98 &xor( $u, $R);
99 &xor( $t, $R);
100 &xor( $t, $tmp2);
101
102 &and( $u, "0xfcfcfcfc" ); # 2
103 &xor( $tmp1, $tmp1); # 1
104 &and( $t, "0xcfcfcfcf" ); # 2
105 &xor( $tmp2, $tmp2);
106 &movb( &LB($tmp1), &LB($u) );
107 &movb( &LB($tmp2), &HB($u) );
108 &rotr( $t, 4 );
109 &mov( $trans, &swtmp(1));
110 &xor( $L, &DWP(" ",$trans,$tmp1,0));
111 &movb( &LB($tmp1), &LB($t) );
112 &xor( $L, &DWP("0x200",$trans,$tmp2,0));
113 &movb( &LB($tmp2), &HB($t) );
114 &shr( $u, 16);
115 &xor( $L, &DWP("0x100",$trans,$tmp1,0));
116 &movb( &LB($tmp1), &HB($u) );
117 &shr( $t, 16);
118 &xor( $L, &DWP("0x300",$trans,$tmp2,0));
119 &movb( &LB($tmp2), &HB($t) );
120 &and( $u, "0xff" );
121 &and( $t, "0xff" );
122 &mov( $tmp1, &DWP("0x600",$trans,$tmp1,0));
123 &xor( $L, $tmp1);
124 &mov( $tmp1, &DWP("0x700",$trans,$tmp2,0));
125 &xor( $L, $tmp1);
126 &mov( $tmp1, &DWP("0x400",$trans,$u,0));
127 &xor( $L, $tmp1);
128 &mov( $tmp1, &DWP("0x500",$trans,$t,0));
129 &xor( $L, $tmp1);
130 &mov( $trans, &wparam(1));
131 }
132
133sub n2a
134 {
135 sprintf("%d",$_[0]);
136 }
137
138# now has a side affect of rotating $a by $shift
139sub R_PERM_OP
140 {
141 local($a,$b,$tt,$shift,$mask,$last)=@_;
142
143 &rotl( $a, $shift ) if ($shift != 0);
144 &mov( $tt, $a );
145 &xor( $a, $b );
146 &and( $a, $mask );
147 if ($notlast eq $b)
148 {
149 &xor( $b, $a );
150 &xor( $tt, $a );
151 }
152 else
153 {
154 &xor( $tt, $a );
155 &xor( $b, $a );
156 }
157 &comment("");
158 }
159
160sub IP_new
161 {
162 local($l,$r,$tt,$lr)=@_;
163
164 &R_PERM_OP($l,$r,$tt, 4,"0xf0f0f0f0",$l);
165 &R_PERM_OP($r,$tt,$l,20,"0xfff0000f",$l);
166 &R_PERM_OP($l,$tt,$r,14,"0x33333333",$r);
167 &R_PERM_OP($tt,$r,$l,22,"0x03fc03fc",$r);
168 &R_PERM_OP($l,$r,$tt, 9,"0xaaaaaaaa",$r);
169
170 if ($lr != 3)
171 {
172 if (($lr-3) < 0)
173 { &rotr($tt, 3-$lr); }
174 else { &rotl($tt, $lr-3); }
175 }
176 if ($lr != 2)
177 {
178 if (($lr-2) < 0)
179 { &rotr($r, 2-$lr); }
180 else { &rotl($r, $lr-2); }
181 }
182 }
183
184sub FP_new
185 {
186 local($l,$r,$tt,$lr)=@_;
187
188 if ($lr != 2)
189 {
190 if (($lr-2) < 0)
191 { &rotl($r, 2-$lr); }
192 else { &rotr($r, $lr-2); }
193 }
194 if ($lr != 3)
195 {
196 if (($lr-3) < 0)
197 { &rotl($l, 3-$lr); }
198 else { &rotr($l, $lr-3); }
199 }
200
201 &R_PERM_OP($l,$r,$tt, 0,"0xaaaaaaaa",$r);
202 &R_PERM_OP($tt,$r,$l,23,"0x03fc03fc",$r);
203 &R_PERM_OP($l,$r,$tt,10,"0x33333333",$l);
204 &R_PERM_OP($r,$tt,$l,18,"0xfff0000f",$l);
205 &R_PERM_OP($l,$tt,$r,12,"0xf0f0f0f0",$r);
206 &rotr($tt , 4);
207 }
208
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