1#!/usr/local/bin/perl 2 3# Normal is the 4# md5_block_x86(MD5_CTX *c, ULONG *X); 5# version, non-normal is the 6# md5_block_x86(MD5_CTX *c, ULONG *X,int blocks); 7 8$normal=0; 9 10push(@INC,"perlasm","../../perlasm"); 11require "x86asm.pl"; 12 13&asm_init($ARGV[0],$0); 14 15$A="eax"; 16$B="ebx"; 17$C="ecx"; 18$D="edx"; 19$tmp1="edi"; 20$tmp2="ebp"; 21$X="esi"; 22 23# What we need to load into $tmp for the next round 24%Ltmp1=("R0",&Np($C), "R1",&Np($C), "R2",&Np($C), "R3",&Np($D)); 25@xo=( 26 0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, # R0 27 1, 6, 11, 0, 5, 10, 15, 4, 9, 14, 3, 8, 13, 2, 7, 12, # R1 28 5, 8, 11, 14, 1, 4, 7, 10, 13, 0, 3, 6, 9, 12, 15, 2, # R2 29 0, 7, 14, 5, 12, 3, 10, 1, 8, 15, 6, 13, 4, 11, 2, 9, # R3 30 ); 31 32&md5_block("md5_block_asm_data_order"); 33&asm_finish(); 34 35sub Np 36 { 37 local($p)=@_; 38 local(%n)=($A,$D,$B,$A,$C,$B,$D,$C); 39 return($n{$p}); 40 } 41 42sub R0 43 { 44 local($pos,$a,$b,$c,$d,$K,$ki,$s,$t)=@_; 45 46 &mov($tmp1,$C) if $pos < 0; 47 &mov($tmp2,&DWP($xo[$ki]*4,$K,"",0)) if $pos < 0; # very first one 48 49 # body proper 50 51 &comment("R0 $ki"); 52 &xor($tmp1,$d); # F function - part 2 53 54 &and($tmp1,$b); # F function - part 3 55 &lea($a,&DWP($t,$a,$tmp2,1)); 56 57 &xor($tmp1,$d); # F function - part 4 58 59 &add($a,$tmp1); 60 &mov($tmp1,&Np($c)) if $pos < 1; # next tmp1 for R0 61 &mov($tmp1,&Np($c)) if $pos == 1; # next tmp1 for R1 62 63 &rotl($a,$s); 64 65 &mov($tmp2,&DWP($xo[$ki+1]*4,$K,"",0)) if ($pos != 2); 66 67 &add($a,$b); 68 } 69 70sub R1 71 { 72 local($pos,$a,$b,$c,$d,$K,$ki,$s,$t)=@_; 73 74 &comment("R1 $ki"); 75 76 &lea($a,&DWP($t,$a,$tmp2,1)); 77 78 &xor($tmp1,$b); # G function - part 2 79 &and($tmp1,$d); # G function - part 3 80 81 &mov($tmp2,&DWP($xo[$ki+1]*4,$K,"",0)) if ($pos != 2); 82 &xor($tmp1,$c); # G function - part 4 83 84 &add($a,$tmp1); 85 &mov($tmp1,&Np($c)) if $pos < 1; # G function - part 1 86 &mov($tmp1,&Np($c)) if $pos == 1; # G function - part 1 87 88 &rotl($a,$s); 89 90 &add($a,$b); 91 } 92 93sub R2 94 { 95 local($n,$pos,$a,$b,$c,$d,$K,$ki,$s,$t)=@_; 96 # This one is different, only 3 logical operations 97 98if (($n & 1) == 0) 99 { 100 &comment("R2 $ki"); 101 # make sure to do 'D' first, not 'B', else we clash with 102 # the last add from the previous round. 103 104 &xor($tmp1,$d); # H function - part 2 105 106 &xor($tmp1,$b); # H function - part 3 107 &lea($a,&DWP($t,$a,$tmp2,1)); 108 109 &add($a,$tmp1); 110 111 &rotl($a,$s); 112 113 &mov($tmp2,&DWP($xo[$ki+1]*4,$K,"",0)); 114 &mov($tmp1,&Np($c)); 115 } 116else 117 { 118 &comment("R2 $ki"); 119 # make sure to do 'D' first, not 'B', else we clash with 120 # the last add from the previous round. 121 122 &lea($a,&DWP($t,$a,$tmp2,1)); 123 124 &add($b,$c); # MOVED FORWARD 125 &xor($tmp1,$d); # H function - part 2 126 127 &xor($tmp1,$b); # H function - part 3 128 &mov($tmp2,&DWP($xo[$ki+1]*4,$K,"",0)) if ($pos != 2); 129 130 &add($a,$tmp1); 131 &mov($tmp1,&Np($c)) if $pos < 1; # H function - part 1 132 &mov($tmp1,-1) if $pos == 1; # I function - part 1 133 134 &rotl($a,$s); 135 136 &add($a,$b); 137 } 138 } 139 140sub R3 141 { 142 local($pos,$a,$b,$c,$d,$K,$ki,$s,$t)=@_; 143 144 &comment("R3 $ki"); 145 146 # ¬($tmp1) 147 &xor($tmp1,$d) if $pos < 0; # I function - part 2 148 149 &or($tmp1,$b); # I function - part 3 150 &lea($a,&DWP($t,$a,$tmp2,1)); 151 152 &xor($tmp1,$c); # I function - part 4 153 &mov($tmp2,&DWP($xo[$ki+1]*4,$K,"",0)) if $pos != 2; # load X/k value 154 &mov($tmp2,&wparam(0)) if $pos == 2; 155 156 &add($a,$tmp1); 157 &mov($tmp1,-1) if $pos < 1; # H function - part 1 158 &add($K,64) if $pos >=1 && !$normal; 159 160 &rotl($a,$s); 161 162 &xor($tmp1,&Np($d)) if $pos <= 0; # I function - part = first time 163 &mov($tmp1,&DWP( 0,$tmp2,"",0)) if $pos > 0; 164 &add($a,$b); 165 } 166 167 168sub md5_block 169 { 170 local($name)=@_; 171 172 &function_begin_B($name,"",3); 173 174 # parameter 1 is the MD5_CTX structure. 175 # A 0 176 # B 4 177 # C 8 178 # D 12 179 180 &push("esi"); 181 &push("edi"); 182 &mov($tmp1, &wparam(0)); # edi 183 &mov($X, &wparam(1)); # esi 184 &mov($C, &wparam(2)); 185 &push("ebp"); 186 &shl($C, 6); 187 &push("ebx"); 188 &add($C, $X); # offset we end at 189 &sub($C, 64); 190 &mov($A, &DWP( 0,$tmp1,"",0)); 191 &push($C); # Put on the TOS 192 &mov($B, &DWP( 4,$tmp1,"",0)); 193 &mov($C, &DWP( 8,$tmp1,"",0)); 194 &mov($D, &DWP(12,$tmp1,"",0)); 195 196 &set_label("start") unless $normal; 197 &comment(""); 198 &comment("R0 section"); 199 200 &R0(-2,$A,$B,$C,$D,$X, 0, 7,0xd76aa478); 201 &R0( 0,$D,$A,$B,$C,$X, 1,12,0xe8c7b756); 202 &R0( 0,$C,$D,$A,$B,$X, 2,17,0x242070db); 203 &R0( 0,$B,$C,$D,$A,$X, 3,22,0xc1bdceee); 204 &R0( 0,$A,$B,$C,$D,$X, 4, 7,0xf57c0faf); 205 &R0( 0,$D,$A,$B,$C,$X, 5,12,0x4787c62a); 206 &R0( 0,$C,$D,$A,$B,$X, 6,17,0xa8304613); 207 &R0( 0,$B,$C,$D,$A,$X, 7,22,0xfd469501); 208 &R0( 0,$A,$B,$C,$D,$X, 8, 7,0x698098d8); 209 &R0( 0,$D,$A,$B,$C,$X, 9,12,0x8b44f7af); 210 &R0( 0,$C,$D,$A,$B,$X,10,17,0xffff5bb1); 211 &R0( 0,$B,$C,$D,$A,$X,11,22,0x895cd7be); 212 &R0( 0,$A,$B,$C,$D,$X,12, 7,0x6b901122); 213 &R0( 0,$D,$A,$B,$C,$X,13,12,0xfd987193); 214 &R0( 0,$C,$D,$A,$B,$X,14,17,0xa679438e); 215 &R0( 1,$B,$C,$D,$A,$X,15,22,0x49b40821); 216 217 &comment(""); 218 &comment("R1 section"); 219 &R1(-1,$A,$B,$C,$D,$X,16, 5,0xf61e2562); 220 &R1( 0,$D,$A,$B,$C,$X,17, 9,0xc040b340); 221 &R1( 0,$C,$D,$A,$B,$X,18,14,0x265e5a51); 222 &R1( 0,$B,$C,$D,$A,$X,19,20,0xe9b6c7aa); 223 &R1( 0,$A,$B,$C,$D,$X,20, 5,0xd62f105d); 224 &R1( 0,$D,$A,$B,$C,$X,21, 9,0x02441453); 225 &R1( 0,$C,$D,$A,$B,$X,22,14,0xd8a1e681); 226 &R1( 0,$B,$C,$D,$A,$X,23,20,0xe7d3fbc8); 227 &R1( 0,$A,$B,$C,$D,$X,24, 5,0x21e1cde6); 228 &R1( 0,$D,$A,$B,$C,$X,25, 9,0xc33707d6); 229 &R1( 0,$C,$D,$A,$B,$X,26,14,0xf4d50d87); 230 &R1( 0,$B,$C,$D,$A,$X,27,20,0x455a14ed); 231 &R1( 0,$A,$B,$C,$D,$X,28, 5,0xa9e3e905); 232 &R1( 0,$D,$A,$B,$C,$X,29, 9,0xfcefa3f8); 233 &R1( 0,$C,$D,$A,$B,$X,30,14,0x676f02d9); 234 &R1( 1,$B,$C,$D,$A,$X,31,20,0x8d2a4c8a); 235 236 &comment(""); 237 &comment("R2 section"); 238 &R2( 0,-1,$A,$B,$C,$D,$X,32, 4,0xfffa3942); 239 &R2( 1, 0,$D,$A,$B,$C,$X,33,11,0x8771f681); 240 &R2( 2, 0,$C,$D,$A,$B,$X,34,16,0x6d9d6122); 241 &R2( 3, 0,$B,$C,$D,$A,$X,35,23,0xfde5380c); 242 &R2( 4, 0,$A,$B,$C,$D,$X,36, 4,0xa4beea44); 243 &R2( 5, 0,$D,$A,$B,$C,$X,37,11,0x4bdecfa9); 244 &R2( 6, 0,$C,$D,$A,$B,$X,38,16,0xf6bb4b60); 245 &R2( 7, 0,$B,$C,$D,$A,$X,39,23,0xbebfbc70); 246 &R2( 8, 0,$A,$B,$C,$D,$X,40, 4,0x289b7ec6); 247 &R2( 9, 0,$D,$A,$B,$C,$X,41,11,0xeaa127fa); 248 &R2(10, 0,$C,$D,$A,$B,$X,42,16,0xd4ef3085); 249 &R2(11, 0,$B,$C,$D,$A,$X,43,23,0x04881d05); 250 &R2(12, 0,$A,$B,$C,$D,$X,44, 4,0xd9d4d039); 251 &R2(13, 0,$D,$A,$B,$C,$X,45,11,0xe6db99e5); 252 &R2(14, 0,$C,$D,$A,$B,$X,46,16,0x1fa27cf8); 253 &R2(15, 1,$B,$C,$D,$A,$X,47,23,0xc4ac5665); 254 255 &comment(""); 256 &comment("R3 section"); 257 &R3(-1,$A,$B,$C,$D,$X,48, 6,0xf4292244); 258 &R3( 0,$D,$A,$B,$C,$X,49,10,0x432aff97); 259 &R3( 0,$C,$D,$A,$B,$X,50,15,0xab9423a7); 260 &R3( 0,$B,$C,$D,$A,$X,51,21,0xfc93a039); 261 &R3( 0,$A,$B,$C,$D,$X,52, 6,0x655b59c3); 262 &R3( 0,$D,$A,$B,$C,$X,53,10,0x8f0ccc92); 263 &R3( 0,$C,$D,$A,$B,$X,54,15,0xffeff47d); 264 &R3( 0,$B,$C,$D,$A,$X,55,21,0x85845dd1); 265 &R3( 0,$A,$B,$C,$D,$X,56, 6,0x6fa87e4f); 266 &R3( 0,$D,$A,$B,$C,$X,57,10,0xfe2ce6e0); 267 &R3( 0,$C,$D,$A,$B,$X,58,15,0xa3014314); 268 &R3( 0,$B,$C,$D,$A,$X,59,21,0x4e0811a1); 269 &R3( 0,$A,$B,$C,$D,$X,60, 6,0xf7537e82); 270 &R3( 0,$D,$A,$B,$C,$X,61,10,0xbd3af235); 271 &R3( 0,$C,$D,$A,$B,$X,62,15,0x2ad7d2bb); 272 &R3( 2,$B,$C,$D,$A,$X,63,21,0xeb86d391); 273 274 # &mov($tmp2,&wparam(0)); # done in the last R3 275 # &mov($tmp1, &DWP( 0,$tmp2,"",0)); # done is the last R3 276 277 &add($A,$tmp1); 278 &mov($tmp1, &DWP( 4,$tmp2,"",0)); 279 280 &add($B,$tmp1); 281 &mov($tmp1, &DWP( 8,$tmp2,"",0)); 282 283 &add($C,$tmp1); 284 &mov($tmp1, &DWP(12,$tmp2,"",0)); 285 286 &add($D,$tmp1); 287 &mov(&DWP( 0,$tmp2,"",0),$A); 288 289 &mov(&DWP( 4,$tmp2,"",0),$B); 290 &mov($tmp1,&swtmp(0)) unless $normal; 291 292 &mov(&DWP( 8,$tmp2,"",0),$C); 293 &mov(&DWP(12,$tmp2,"",0),$D); 294 295 &cmp($tmp1,$X) unless $normal; # check count 296 &jae(&label("start")) unless $normal; 297 298 &pop("eax"); # pop the temp variable off the stack 299 &pop("ebx"); 300 &pop("ebp"); 301 &pop("edi"); 302 &pop("esi"); 303 &ret(); 304 &function_end_B($name); 305 } 306 307