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diff --git a/src/lib/libcrypto/sha/asm/sha256-586.pl b/src/lib/libcrypto/sha/asm/sha256-586.pl
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1#!/usr/bin/env perl
2#
3# ====================================================================
4# Written by Andy Polyakov <appro@fy.chalmers.se> for the OpenSSL
5# project. The module is, however, dual licensed under OpenSSL and
6# CRYPTOGAMS licenses depending on where you obtain it. For further
7# details see http://www.openssl.org/~appro/cryptogams/.
8# ====================================================================
9#
10# SHA256 block transform for x86. September 2007.
11#
12# Performance in clock cycles per processed byte (less is better):
13#
14# Pentium PIII P4 AMD K8 Core2
15# gcc 46 36 41 27 26
16# icc 57 33 38 25 23
17# x86 asm 40 30 35 20 20
18# x86_64 asm(*) - - 21 15.8 16.5
19#
20# (*) x86_64 assembler performance is presented for reference
21# purposes.
22#
23# Performance improvement over compiler generated code varies from
24# 10% to 40% [see above]. Not very impressive on some µ-archs, but
25# it's 5 times smaller and optimizies amount of writes.
26
27$0 =~ m/(.*[\/\\])[^\/\\]+$/; $dir=$1;
28push(@INC,"${dir}","${dir}../../perlasm");
29require "x86asm.pl";
30
31&asm_init($ARGV[0],"sha512-586.pl",$ARGV[$#ARGV] eq "386");
32
33$A="eax";
34$E="edx";
35$T="ebx";
36$Aoff=&DWP(0,"esp");
37$Boff=&DWP(4,"esp");
38$Coff=&DWP(8,"esp");
39$Doff=&DWP(12,"esp");
40$Eoff=&DWP(16,"esp");
41$Foff=&DWP(20,"esp");
42$Goff=&DWP(24,"esp");
43$Hoff=&DWP(28,"esp");
44$Xoff=&DWP(32,"esp");
45$K256="ebp";
46
47sub BODY_00_15() {
48 my $in_16_63=shift;
49
50 &mov ("ecx",$E);
51 &add ($T,&DWP(4*(8+15+16-9),"esp")) if ($in_16_63); # T += X[-7]
52 &ror ("ecx",6);
53 &mov ("edi",$E);
54 &ror ("edi",11);
55 &mov ("esi",$Foff);
56 &xor ("ecx","edi");
57 &ror ("edi",25-11);
58 &mov (&DWP(4*(8+15),"esp"),$T) if ($in_16_63); # save X[0]
59 &xor ("ecx","edi"); # Sigma1(e)
60 &mov ("edi",$Goff);
61 &add ($T,"ecx"); # T += Sigma1(e)
62 &mov ($Eoff,$E); # modulo-scheduled
63
64 &xor ("esi","edi");
65 &mov ("ecx",$A);
66 &and ("esi",$E);
67 &mov ($E,$Doff); # e becomes d, which is e in next iteration
68 &xor ("esi","edi"); # Ch(e,f,g)
69 &mov ("edi",$A);
70 &add ($T,"esi"); # T += Ch(e,f,g)
71
72 &ror ("ecx",2);
73 &add ($T,$Hoff); # T += h
74 &ror ("edi",13);
75 &mov ("esi",$Boff);
76 &xor ("ecx","edi");
77 &ror ("edi",22-13);
78 &add ($E,$T); # d += T
79 &xor ("ecx","edi"); # Sigma0(a)
80 &mov ("edi",$Coff);
81
82 &add ($T,"ecx"); # T += Sigma0(a)
83 &mov ($Aoff,$A); # modulo-scheduled
84
85 &mov ("ecx",$A);
86 &sub ("esp",4);
87 &or ($A,"esi"); # a becomes h, which is a in next iteration
88 &and ("ecx","esi");
89 &and ($A,"edi");
90 &mov ("esi",&DWP(0,$K256));
91 &or ($A,"ecx"); # h=Maj(a,b,c)
92
93 &add ($K256,4);
94 &add ($A,$T); # h += T
95 &mov ($T,&DWP(4*(8+15+16-1),"esp")) if ($in_16_63); # preload T
96 &add ($E,"esi"); # d += K256[i]
97 &add ($A,"esi"); # h += K256[i]
98}
99
100&function_begin("sha256_block_data_order");
101 &mov ("esi",wparam(0)); # ctx
102 &mov ("edi",wparam(1)); # inp
103 &mov ("eax",wparam(2)); # num
104 &mov ("ebx","esp"); # saved sp
105
106 &call (&label("pic_point")); # make it PIC!
107&set_label("pic_point");
108 &blindpop($K256);
109 &lea ($K256,&DWP(&label("K256")."-".&label("pic_point"),$K256));
110
111 &sub ("esp",16);
112 &and ("esp",-64);
113
114 &shl ("eax",6);
115 &add ("eax","edi");
116 &mov (&DWP(0,"esp"),"esi"); # ctx
117 &mov (&DWP(4,"esp"),"edi"); # inp
118 &mov (&DWP(8,"esp"),"eax"); # inp+num*128
119 &mov (&DWP(12,"esp"),"ebx"); # saved sp
120
121&set_label("loop",16);
122 # copy input block to stack reversing byte and dword order
123 for($i=0;$i<4;$i++) {
124 &mov ("eax",&DWP($i*16+0,"edi"));
125 &mov ("ebx",&DWP($i*16+4,"edi"));
126 &mov ("ecx",&DWP($i*16+8,"edi"));
127 &mov ("edx",&DWP($i*16+12,"edi"));
128 &bswap ("eax");
129 &bswap ("ebx");
130 &bswap ("ecx");
131 &bswap ("edx");
132 &push ("eax");
133 &push ("ebx");
134 &push ("ecx");
135 &push ("edx");
136 }
137 &add ("edi",64);
138 &sub ("esp",4*8); # place for A,B,C,D,E,F,G,H
139 &mov (&DWP(4*(8+16)+4,"esp"),"edi");
140
141 # copy ctx->h[0-7] to A,B,C,D,E,F,G,H on stack
142 &mov ($A,&DWP(0,"esi"));
143 &mov ("ebx",&DWP(4,"esi"));
144 &mov ("ecx",&DWP(8,"esi"));
145 &mov ("edi",&DWP(12,"esi"));
146 # &mov ($Aoff,$A);
147 &mov ($Boff,"ebx");
148 &mov ($Coff,"ecx");
149 &mov ($Doff,"edi");
150 &mov ($E,&DWP(16,"esi"));
151 &mov ("ebx",&DWP(20,"esi"));
152 &mov ("ecx",&DWP(24,"esi"));
153 &mov ("edi",&DWP(28,"esi"));
154 # &mov ($Eoff,$E);
155 &mov ($Foff,"ebx");
156 &mov ($Goff,"ecx");
157 &mov ($Hoff,"edi");
158
159&set_label("00_15",16);
160 &mov ($T,&DWP(4*(8+15),"esp"));
161
162 &BODY_00_15();
163
164 &cmp ("esi",0xc19bf174);
165 &jne (&label("00_15"));
166
167 &mov ($T,&DWP(4*(8+15+16-1),"esp")); # preloaded in BODY_00_15(1)
168&set_label("16_63",16);
169 &mov ("esi",$T);
170 &mov ("ecx",&DWP(4*(8+15+16-14),"esp"));
171 &shr ($T,3);
172 &ror ("esi",7);
173 &xor ($T,"esi");
174 &ror ("esi",18-7);
175 &mov ("edi","ecx");
176 &xor ($T,"esi"); # T = sigma0(X[-15])
177
178 &shr ("ecx",10);
179 &mov ("esi",&DWP(4*(8+15+16),"esp"));
180 &ror ("edi",17);
181 &xor ("ecx","edi");
182 &ror ("edi",19-17);
183 &add ($T,"esi"); # T += X[-16]
184 &xor ("edi","ecx") # sigma1(X[-2])
185
186 &add ($T,"edi"); # T += sigma1(X[-2])
187 # &add ($T,&DWP(4*(8+15+16-9),"esp")); # T += X[-7], moved to BODY_00_15(1)
188 # &mov (&DWP(4*(8+15),"esp"),$T); # save X[0]
189
190 &BODY_00_15(1);
191
192 &cmp ("esi",0xc67178f2);
193 &jne (&label("16_63"));
194
195 &mov ("esi",&DWP(4*(8+16+64)+0,"esp"));#ctx
196 # &mov ($A,$Aoff);
197 &mov ("ebx",$Boff);
198 &mov ("ecx",$Coff);
199 &mov ("edi",$Doff);
200 &add ($A,&DWP(0,"esi"));
201 &add ("ebx",&DWP(4,"esi"));
202 &add ("ecx",&DWP(8,"esi"));
203 &add ("edi",&DWP(12,"esi"));
204 &mov (&DWP(0,"esi"),$A);
205 &mov (&DWP(4,"esi"),"ebx");
206 &mov (&DWP(8,"esi"),"ecx");
207 &mov (&DWP(12,"esi"),"edi");
208 # &mov ($E,$Eoff);
209 &mov ("eax",$Foff);
210 &mov ("ebx",$Goff);
211 &mov ("ecx",$Hoff);
212 &mov ("edi",&DWP(4*(8+16+64)+4,"esp"));#inp
213 &add ($E,&DWP(16,"esi"));
214 &add ("eax",&DWP(20,"esi"));
215 &add ("ebx",&DWP(24,"esi"));
216 &add ("ecx",&DWP(28,"esi"));
217 &mov (&DWP(16,"esi"),$E);
218 &mov (&DWP(20,"esi"),"eax");
219 &mov (&DWP(24,"esi"),"ebx");
220 &mov (&DWP(28,"esi"),"ecx");
221
222 &add ("esp",4*(8+16+64)); # destroy frame
223 &sub ($K256,4*64); # rewind K
224
225 &cmp ("edi",&DWP(8,"esp")); # are we done yet?
226 &jb (&label("loop"));
227
228 &mov ("esp",&DWP(12,"esp")); # restore sp
229&function_end_A();
230
231&set_label("K256",64); # Yes! I keep it in the code segment!
232 &data_word(0x428a2f98,0x71374491,0xb5c0fbcf,0xe9b5dba5);
233 &data_word(0x3956c25b,0x59f111f1,0x923f82a4,0xab1c5ed5);
234 &data_word(0xd807aa98,0x12835b01,0x243185be,0x550c7dc3);
235 &data_word(0x72be5d74,0x80deb1fe,0x9bdc06a7,0xc19bf174);
236 &data_word(0xe49b69c1,0xefbe4786,0x0fc19dc6,0x240ca1cc);
237 &data_word(0x2de92c6f,0x4a7484aa,0x5cb0a9dc,0x76f988da);
238 &data_word(0x983e5152,0xa831c66d,0xb00327c8,0xbf597fc7);
239 &data_word(0xc6e00bf3,0xd5a79147,0x06ca6351,0x14292967);
240 &data_word(0x27b70a85,0x2e1b2138,0x4d2c6dfc,0x53380d13);
241 &data_word(0x650a7354,0x766a0abb,0x81c2c92e,0x92722c85);
242 &data_word(0xa2bfe8a1,0xa81a664b,0xc24b8b70,0xc76c51a3);
243 &data_word(0xd192e819,0xd6990624,0xf40e3585,0x106aa070);
244 &data_word(0x19a4c116,0x1e376c08,0x2748774c,0x34b0bcb5);
245 &data_word(0x391c0cb3,0x4ed8aa4a,0x5b9cca4f,0x682e6ff3);
246 &data_word(0x748f82ee,0x78a5636f,0x84c87814,0x8cc70208);
247 &data_word(0x90befffa,0xa4506ceb,0xbef9a3f7,0xc67178f2);
248&function_end_B("sha256_block_data_order");
249&asciz("SHA256 block transform for x86, CRYPTOGAMS by <appro\@openssl.org>");
250
251&asm_finish();
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