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 10 $0 =~ m/(.*[\/\\])[^\/\\]+$/; $dir=$1; 11 push(@INC,"${dir}","${dir}../../perlasm"); 12 require "x86asm.pl"; 13 14 &asm_init($ARGV[0],$0); 15 16 $A="eax"; 17 $B="ebx"; 18 $C="ecx"; 19 $D="edx"; 20 $tmp1="edi"; 21 $tmp2="ebp"; 22 $X="esi"; 23 24 # What we need to load into $tmp for the next round 25 %Ltmp1=("R0",&Np($C), "R1",&Np($C), "R2",&Np($C), "R3",&Np($D)); 26 @xo=( 27 0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, # R0 28 1, 6, 11, 0, 5, 10, 15, 4, 9, 14, 3, 8, 13, 2, 7, 12, # R1 29 5, 8, 11, 14, 1, 4, 7, 10, 13, 0, 3, 6, 9, 12, 15, 2, # R2 30 0, 7, 14, 5, 12, 3, 10, 1, 8, 15, 6, 13, 4, 11, 2, 9, # R3 31 ); 32 33 &md5_block("md5_block_asm_data_order"); 34 &asm_finish(); 35 36 sub Np 37 { 38 local($p)=@_; 39 local(%n)=($A,$D,$B,$A,$C,$B,$D,$C); 40 return($n{$p}); 41 } 42 43 sub R0 44 { 45 local($pos,$a,$b,$c,$d,$K,$ki,$s,$t)=@_; 46 47 &mov($tmp1,$C) if $pos < 0; 48 &mov($tmp2,&DWP($xo[$ki]*4,$K,"",0)) if $pos < 0; # very first one 49 50 # body proper 51 52 &comment("R0 $ki"); 53 &xor($tmp1,$d); # F function - part 2 54 55 &and($tmp1,$b); # F function - part 3 56 &lea($a,&DWP($t,$a,$tmp2,1)); 57 58 &xor($tmp1,$d); # F function - part 4 59 60 &add($a,$tmp1); 61 &mov($tmp1,&Np($c)) if $pos < 1; # next tmp1 for R0 62 &mov($tmp1,&Np($c)) if $pos == 1; # next tmp1 for R1 63 64 &rotl($a,$s); 65 66 &mov($tmp2,&DWP($xo[$ki+1]*4,$K,"",0)) if ($pos != 2); 67 68 &add($a,$b); 69 } 70 71 sub R1 72 { 73 local($pos,$a,$b,$c,$d,$K,$ki,$s,$t)=@_; 74 75 &comment("R1 $ki"); 76 77 &lea($a,&DWP($t,$a,$tmp2,1)); 78 79 &xor($tmp1,$b); # G function - part 2 80 &and($tmp1,$d); # G function - part 3 81 82 &mov($tmp2,&DWP($xo[$ki+1]*4,$K,"",0)) if ($pos != 2); 83 &xor($tmp1,$c); # G function - part 4 84 85 &add($a,$tmp1); 86 &mov($tmp1,&Np($c)) if $pos < 1; # G function - part 1 87 &mov($tmp1,&Np($c)) if $pos == 1; # G function - part 1 88 89 &rotl($a,$s); 90 91 &add($a,$b); 92 } 93 94 sub R2 95 { 96 local($n,$pos,$a,$b,$c,$d,$K,$ki,$s,$t)=@_; 97 # This one is different, only 3 logical operations 98 99 if (($n & 1) == 0) 100 { 101 &comment("R2 $ki"); 102 # make sure to do 'D' first, not 'B', else we clash with 103 # the last add from the previous round. 104 105 &xor($tmp1,$d); # H function - part 2 106 107 &xor($tmp1,$b); # H function - part 3 108 &lea($a,&DWP($t,$a,$tmp2,1)); 109 110 &add($a,$tmp1); 111 112 &rotl($a,$s); 113 114 &mov($tmp2,&DWP($xo[$ki+1]*4,$K,"",0)); 115 &mov($tmp1,&Np($c)); 116 } 117 else 118 { 119 &comment("R2 $ki"); 120 # make sure to do 'D' first, not 'B', else we clash with 121 # the last add from the previous round. 122 123 &lea($a,&DWP($t,$a,$tmp2,1)); 124 125 &add($b,$c); # MOVED FORWARD 126 &xor($tmp1,$d); # H function - part 2 127 128 &xor($tmp1,$b); # H function - part 3 129 &mov($tmp2,&DWP($xo[$ki+1]*4,$K,"",0)) if ($pos != 2); 130 131 &add($a,$tmp1); 132 &mov($tmp1,&Np($c)) if $pos < 1; # H function - part 1 133 &mov($tmp1,-1) if $pos == 1; # I function - part 1 134 135 &rotl($a,$s); 136 137 &add($a,$b); 138 } 139 } 140 141 sub R3 142 { 143 local($pos,$a,$b,$c,$d,$K,$ki,$s,$t)=@_; 144 145 &comment("R3 $ki"); 146 147 # ¬($tmp1) 148 &xor($tmp1,$d) if $pos < 0; # I function - part 2 149 150 &or($tmp1,$b); # I function - part 3 151 &lea($a,&DWP($t,$a,$tmp2,1)); 152 153 &xor($tmp1,$c); # I function - part 4 154 &mov($tmp2,&DWP($xo[$ki+1]*4,$K,"",0)) if $pos != 2; # load X/k value 155 &mov($tmp2,&wparam(0)) if $pos == 2; 156 157 &add($a,$tmp1); 158 &mov($tmp1,-1) if $pos < 1; # H function - part 1 159 &add($K,64) if $pos >=1 && !$normal; 160 161 &rotl($a,$s); 162 163 &xor($tmp1,&Np($d)) if $pos <= 0; # I function - part = first time 164 &mov($tmp1,&DWP( 0,$tmp2,"",0)) if $pos > 0; 165 &add($a,$b); 166 } 167 168 169 sub md5_block 170 { 171 local($name)=@_; 172 173 &function_begin_B($name,"",3); 174 175 # parameter 1 is the MD5_CTX structure. 176 # A 0 177 # B 4 178 # C 8 179 # D 12 180 181 &push("esi"); 182 &push("edi"); 183 &mov($tmp1, &wparam(0)); # edi 184 &mov($X, &wparam(1)); # esi 185 &mov($C, &wparam(2)); 186 &push("ebp"); 187 &shl($C, 6); 188 &push("ebx"); 189 &add($C, $X); # offset we end at 190 &sub($C, 64); 191 &mov($A, &DWP( 0,$tmp1,"",0)); 192 &push($C); # Put on the TOS 193 &mov($B, &DWP( 4,$tmp1,"",0)); 194 &mov($C, &DWP( 8,$tmp1,"",0)); 195 &mov($D, &DWP(12,$tmp1,"",0)); 196 197 &set_label("start") unless $normal; 198 &comment(""); 199 &comment("R0 section"); 200 201 &R0(-2,$A,$B,$C,$D,$X, 0, 7,0xd76aa478); 202 &R0( 0,$D,$A,$B,$C,$X, 1,12,0xe8c7b756); 203 &R0( 0,$C,$D,$A,$B,$X, 2,17,0x242070db); 204 &R0( 0,$B,$C,$D,$A,$X, 3,22,0xc1bdceee); 205 &R0( 0,$A,$B,$C,$D,$X, 4, 7,0xf57c0faf); 206 &R0( 0,$D,$A,$B,$C,$X, 5,12,0x4787c62a); 207 &R0( 0,$C,$D,$A,$B,$X, 6,17,0xa8304613); 208 &R0( 0,$B,$C,$D,$A,$X, 7,22,0xfd469501); 209 &R0( 0,$A,$B,$C,$D,$X, 8, 7,0x698098d8); 210 &R0( 0,$D,$A,$B,$C,$X, 9,12,0x8b44f7af); 211 &R0( 0,$C,$D,$A,$B,$X,10,17,0xffff5bb1); 212 &R0( 0,$B,$C,$D,$A,$X,11,22,0x895cd7be); 213 &R0( 0,$A,$B,$C,$D,$X,12, 7,0x6b901122); 214 &R0( 0,$D,$A,$B,$C,$X,13,12,0xfd987193); 215 &R0( 0,$C,$D,$A,$B,$X,14,17,0xa679438e); 216 &R0( 1,$B,$C,$D,$A,$X,15,22,0x49b40821); 217 218 &comment(""); 219 &comment("R1 section"); 220 &R1(-1,$A,$B,$C,$D,$X,16, 5,0xf61e2562); 221 &R1( 0,$D,$A,$B,$C,$X,17, 9,0xc040b340); 222 &R1( 0,$C,$D,$A,$B,$X,18,14,0x265e5a51); 223 &R1( 0,$B,$C,$D,$A,$X,19,20,0xe9b6c7aa); 224 &R1( 0,$A,$B,$C,$D,$X,20, 5,0xd62f105d); 225 &R1( 0,$D,$A,$B,$C,$X,21, 9,0x02441453); 226 &R1( 0,$C,$D,$A,$B,$X,22,14,0xd8a1e681); 227 &R1( 0,$B,$C,$D,$A,$X,23,20,0xe7d3fbc8); 228 &R1( 0,$A,$B,$C,$D,$X,24, 5,0x21e1cde6); 229 &R1( 0,$D,$A,$B,$C,$X,25, 9,0xc33707d6); 230 &R1( 0,$C,$D,$A,$B,$X,26,14,0xf4d50d87); 231 &R1( 0,$B,$C,$D,$A,$X,27,20,0x455a14ed); 232 &R1( 0,$A,$B,$C,$D,$X,28, 5,0xa9e3e905); 233 &R1( 0,$D,$A,$B,$C,$X,29, 9,0xfcefa3f8); 234 &R1( 0,$C,$D,$A,$B,$X,30,14,0x676f02d9); 235 &R1( 1,$B,$C,$D,$A,$X,31,20,0x8d2a4c8a); 236 237 &comment(""); 238 &comment("R2 section"); 239 &R2( 0,-1,$A,$B,$C,$D,$X,32, 4,0xfffa3942); 240 &R2( 1, 0,$D,$A,$B,$C,$X,33,11,0x8771f681); 241 &R2( 2, 0,$C,$D,$A,$B,$X,34,16,0x6d9d6122); 242 &R2( 3, 0,$B,$C,$D,$A,$X,35,23,0xfde5380c); 243 &R2( 4, 0,$A,$B,$C,$D,$X,36, 4,0xa4beea44); 244 &R2( 5, 0,$D,$A,$B,$C,$X,37,11,0x4bdecfa9); 245 &R2( 6, 0,$C,$D,$A,$B,$X,38,16,0xf6bb4b60); 246 &R2( 7, 0,$B,$C,$D,$A,$X,39,23,0xbebfbc70); 247 &R2( 8, 0,$A,$B,$C,$D,$X,40, 4,0x289b7ec6); 248 &R2( 9, 0,$D,$A,$B,$C,$X,41,11,0xeaa127fa); 249 &R2(10, 0,$C,$D,$A,$B,$X,42,16,0xd4ef3085); 250 &R2(11, 0,$B,$C,$D,$A,$X,43,23,0x04881d05); 251 &R2(12, 0,$A,$B,$C,$D,$X,44, 4,0xd9d4d039); 252 &R2(13, 0,$D,$A,$B,$C,$X,45,11,0xe6db99e5); 253 &R2(14, 0,$C,$D,$A,$B,$X,46,16,0x1fa27cf8); 254 &R2(15, 1,$B,$C,$D,$A,$X,47,23,0xc4ac5665); 255 256 &comment(""); 257 &comment("R3 section"); 258 &R3(-1,$A,$B,$C,$D,$X,48, 6,0xf4292244); 259 &R3( 0,$D,$A,$B,$C,$X,49,10,0x432aff97); 260 &R3( 0,$C,$D,$A,$B,$X,50,15,0xab9423a7); 261 &R3( 0,$B,$C,$D,$A,$X,51,21,0xfc93a039); 262 &R3( 0,$A,$B,$C,$D,$X,52, 6,0x655b59c3); 263 &R3( 0,$D,$A,$B,$C,$X,53,10,0x8f0ccc92); 264 &R3( 0,$C,$D,$A,$B,$X,54,15,0xffeff47d); 265 &R3( 0,$B,$C,$D,$A,$X,55,21,0x85845dd1); 266 &R3( 0,$A,$B,$C,$D,$X,56, 6,0x6fa87e4f); 267 &R3( 0,$D,$A,$B,$C,$X,57,10,0xfe2ce6e0); 268 &R3( 0,$C,$D,$A,$B,$X,58,15,0xa3014314); 269 &R3( 0,$B,$C,$D,$A,$X,59,21,0x4e0811a1); 270 &R3( 0,$A,$B,$C,$D,$X,60, 6,0xf7537e82); 271 &R3( 0,$D,$A,$B,$C,$X,61,10,0xbd3af235); 272 &R3( 0,$C,$D,$A,$B,$X,62,15,0x2ad7d2bb); 273 &R3( 2,$B,$C,$D,$A,$X,63,21,0xeb86d391); 274 275 # &mov($tmp2,&wparam(0)); # done in the last R3 276 # &mov($tmp1, &DWP( 0,$tmp2,"",0)); # done is the last R3 277 278 &add($A,$tmp1); 279 &mov($tmp1, &DWP( 4,$tmp2,"",0)); 280 281 &add($B,$tmp1); 282 &mov($tmp1, &DWP( 8,$tmp2,"",0)); 283 284 &add($C,$tmp1); 285 &mov($tmp1, &DWP(12,$tmp2,"",0)); 286 287 &add($D,$tmp1); 288 &mov(&DWP( 0,$tmp2,"",0),$A); 289 290 &mov(&DWP( 4,$tmp2,"",0),$B); 291 &mov($tmp1,&swtmp(0)) unless $normal; 292 293 &mov(&DWP( 8,$tmp2,"",0),$C); 294 &mov(&DWP(12,$tmp2,"",0),$D); 295 296 &cmp($tmp1,$X) unless $normal; # check count 297 &jae(&label("start")) unless $normal; 298 299 &pop("eax"); # pop the temp variable off the stack 300 &pop("ebx"); 301 &pop("ebp"); 302 &pop("edi"); 303 &pop("esi"); 304 &ret(); 305 &function_end_B($name); 306 } 307 308
