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 $output=pop; 15 open STDOUT,">$output"; 16 17 &asm_init($ARGV[0]); 18 19 $A="eax"; 20 $B="ebx"; 21 $C="ecx"; 22 $D="edx"; 23 $tmp1="edi"; 24 $tmp2="ebp"; 25 $X="esi"; 26 27 # What we need to load into $tmp for the next round 28 %Ltmp1=("R0",&Np($C), "R1",&Np($C), "R2",&Np($C), "R3",&Np($D)); 29 @xo=( 30 0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, # R0 31 1, 6, 11, 0, 5, 10, 15, 4, 9, 14, 3, 8, 13, 2, 7, 12, # R1 32 5, 8, 11, 14, 1, 4, 7, 10, 13, 0, 3, 6, 9, 12, 15, 2, # R2 33 0, 7, 14, 5, 12, 3, 10, 1, 8, 15, 6, 13, 4, 11, 2, 9, # R3 34 ); 35 36 &md5_block("md5_block_asm_data_order"); 37 &asm_finish(); 38 39 close STDOUT; 40 41 sub Np 42 { 43 local($p)=@_; 44 local(%n)=($A,$D,$B,$A,$C,$B,$D,$C); 45 return($n{$p}); 46 } 47 48 sub R0 49 { 50 local($pos,$a,$b,$c,$d,$K,$ki,$s,$t)=@_; 51 52 &mov($tmp1,$C) if $pos < 0; 53 &mov($tmp2,&DWP($xo[$ki]*4,$K,"",0)) if $pos < 0; # very first one 54 55 # body proper 56 57 &comment("R0 $ki"); 58 &xor($tmp1,$d); # F function - part 2 59 60 &and($tmp1,$b); # F function - part 3 61 &lea($a,&DWP($t,$a,$tmp2,1)); 62 63 &xor($tmp1,$d); # F function - part 4 64 65 &add($a,$tmp1); 66 &mov($tmp1,&Np($c)) if $pos < 1; # next tmp1 for R0 67 &mov($tmp1,&Np($c)) if $pos == 1; # next tmp1 for R1 68 69 &rotl($a,$s); 70 71 &mov($tmp2,&DWP($xo[$ki+1]*4,$K,"",0)) if ($pos != 2); 72 73 &add($a,$b); 74 } 75 76 sub R1 77 { 78 local($pos,$a,$b,$c,$d,$K,$ki,$s,$t)=@_; 79 80 &comment("R1 $ki"); 81 82 &lea($a,&DWP($t,$a,$tmp2,1)); 83 84 &xor($tmp1,$b); # G function - part 2 85 &and($tmp1,$d); # G function - part 3 86 87 &mov($tmp2,&DWP($xo[$ki+1]*4,$K,"",0)) if ($pos != 2); 88 &xor($tmp1,$c); # G function - part 4 89 90 &add($a,$tmp1); 91 &mov($tmp1,&Np($c)) if $pos < 1; # G function - part 1 92 &mov($tmp1,&Np($c)) if $pos == 1; # G function - part 1 93 94 &rotl($a,$s); 95 96 &add($a,$b); 97 } 98 99 sub R2 100 { 101 local($n,$pos,$a,$b,$c,$d,$K,$ki,$s,$t)=@_; 102 # This one is different, only 3 logical operations 103 104 if (($n & 1) == 0) 105 { 106 &comment("R2 $ki"); 107 # make sure to do 'D' first, not 'B', else we clash with 108 # the last add from the previous round. 109 110 &xor($tmp1,$d); # H function - part 2 111 112 &xor($tmp1,$b); # H function - part 3 113 &lea($a,&DWP($t,$a,$tmp2,1)); 114 115 &add($a,$tmp1); 116 117 &rotl($a,$s); 118 119 &mov($tmp2,&DWP($xo[$ki+1]*4,$K,"",0)); 120 &mov($tmp1,&Np($c)); 121 } 122 else 123 { 124 &comment("R2 $ki"); 125 # make sure to do 'D' first, not 'B', else we clash with 126 # the last add from the previous round. 127 128 &lea($a,&DWP($t,$a,$tmp2,1)); 129 130 &add($b,$c); # MOVED FORWARD 131 &xor($tmp1,$d); # H function - part 2 132 133 &xor($tmp1,$b); # H function - part 3 134 &mov($tmp2,&DWP($xo[$ki+1]*4,$K,"",0)) if ($pos != 2); 135 136 &add($a,$tmp1); 137 &mov($tmp1,&Np($c)) if $pos < 1; # H function - part 1 138 &mov($tmp1,-1) if $pos == 1; # I function - part 1 139 140 &rotl($a,$s); 141 142 &add($a,$b); 143 } 144 } 145 146 sub R3 147 { 148 local($pos,$a,$b,$c,$d,$K,$ki,$s,$t)=@_; 149 150 &comment("R3 $ki"); 151 152 # ¬($tmp1) 153 &xor($tmp1,$d) if $pos < 0; # I function - part 2 154 155 &or($tmp1,$b); # I function - part 3 156 &lea($a,&DWP($t,$a,$tmp2,1)); 157 158 &xor($tmp1,$c); # I function - part 4 159 &mov($tmp2,&DWP($xo[$ki+1]*4,$K,"",0)) if $pos != 2; # load X/k value 160 &mov($tmp2,&wparam(0)) if $pos == 2; 161 162 &add($a,$tmp1); 163 &mov($tmp1,-1) if $pos < 1; # H function - part 1 164 &add($K,64) if $pos >=1 && !$normal; 165 166 &rotl($a,$s); 167 168 &xor($tmp1,&Np($d)) if $pos <= 0; # I function - part = first time 169 &mov($tmp1,&DWP( 0,$tmp2,"",0)) if $pos > 0; 170 &add($a,$b); 171 } 172 173 174 sub md5_block 175 { 176 local($name)=@_; 177 178 &function_begin_B($name,"",3); 179 180 # parameter 1 is the MD5_CTX structure. 181 # A 0 182 # B 4 183 # C 8 184 # D 12 185 186 &push("esi"); 187 &push("edi"); 188 &mov($tmp1, &wparam(0)); # edi 189 &mov($X, &wparam(1)); # esi 190 &mov($C, &wparam(2)); 191 &push("ebp"); 192 &shl($C, 6); 193 &push("ebx"); 194 &add($C, $X); # offset we end at 195 &sub($C, 64); 196 &mov($A, &DWP( 0,$tmp1,"",0)); 197 &push($C); # Put on the TOS 198 &mov($B, &DWP( 4,$tmp1,"",0)); 199 &mov($C, &DWP( 8,$tmp1,"",0)); 200 &mov($D, &DWP(12,$tmp1,"",0)); 201 202 &set_label("start") unless $normal; 203 &comment(""); 204 &comment("R0 section"); 205 206 &R0(-2,$A,$B,$C,$D,$X, 0, 7,0xd76aa478); 207 &R0( 0,$D,$A,$B,$C,$X, 1,12,0xe8c7b756); 208 &R0( 0,$C,$D,$A,$B,$X, 2,17,0x242070db); 209 &R0( 0,$B,$C,$D,$A,$X, 3,22,0xc1bdceee); 210 &R0( 0,$A,$B,$C,$D,$X, 4, 7,0xf57c0faf); 211 &R0( 0,$D,$A,$B,$C,$X, 5,12,0x4787c62a); 212 &R0( 0,$C,$D,$A,$B,$X, 6,17,0xa8304613); 213 &R0( 0,$B,$C,$D,$A,$X, 7,22,0xfd469501); 214 &R0( 0,$A,$B,$C,$D,$X, 8, 7,0x698098d8); 215 &R0( 0,$D,$A,$B,$C,$X, 9,12,0x8b44f7af); 216 &R0( 0,$C,$D,$A,$B,$X,10,17,0xffff5bb1); 217 &R0( 0,$B,$C,$D,$A,$X,11,22,0x895cd7be); 218 &R0( 0,$A,$B,$C,$D,$X,12, 7,0x6b901122); 219 &R0( 0,$D,$A,$B,$C,$X,13,12,0xfd987193); 220 &R0( 0,$C,$D,$A,$B,$X,14,17,0xa679438e); 221 &R0( 1,$B,$C,$D,$A,$X,15,22,0x49b40821); 222 223 &comment(""); 224 &comment("R1 section"); 225 &R1(-1,$A,$B,$C,$D,$X,16, 5,0xf61e2562); 226 &R1( 0,$D,$A,$B,$C,$X,17, 9,0xc040b340); 227 &R1( 0,$C,$D,$A,$B,$X,18,14,0x265e5a51); 228 &R1( 0,$B,$C,$D,$A,$X,19,20,0xe9b6c7aa); 229 &R1( 0,$A,$B,$C,$D,$X,20, 5,0xd62f105d); 230 &R1( 0,$D,$A,$B,$C,$X,21, 9,0x02441453); 231 &R1( 0,$C,$D,$A,$B,$X,22,14,0xd8a1e681); 232 &R1( 0,$B,$C,$D,$A,$X,23,20,0xe7d3fbc8); 233 &R1( 0,$A,$B,$C,$D,$X,24, 5,0x21e1cde6); 234 &R1( 0,$D,$A,$B,$C,$X,25, 9,0xc33707d6); 235 &R1( 0,$C,$D,$A,$B,$X,26,14,0xf4d50d87); 236 &R1( 0,$B,$C,$D,$A,$X,27,20,0x455a14ed); 237 &R1( 0,$A,$B,$C,$D,$X,28, 5,0xa9e3e905); 238 &R1( 0,$D,$A,$B,$C,$X,29, 9,0xfcefa3f8); 239 &R1( 0,$C,$D,$A,$B,$X,30,14,0x676f02d9); 240 &R1( 1,$B,$C,$D,$A,$X,31,20,0x8d2a4c8a); 241 242 &comment(""); 243 &comment("R2 section"); 244 &R2( 0,-1,$A,$B,$C,$D,$X,32, 4,0xfffa3942); 245 &R2( 1, 0,$D,$A,$B,$C,$X,33,11,0x8771f681); 246 &R2( 2, 0,$C,$D,$A,$B,$X,34,16,0x6d9d6122); 247 &R2( 3, 0,$B,$C,$D,$A,$X,35,23,0xfde5380c); 248 &R2( 4, 0,$A,$B,$C,$D,$X,36, 4,0xa4beea44); 249 &R2( 5, 0,$D,$A,$B,$C,$X,37,11,0x4bdecfa9); 250 &R2( 6, 0,$C,$D,$A,$B,$X,38,16,0xf6bb4b60); 251 &R2( 7, 0,$B,$C,$D,$A,$X,39,23,0xbebfbc70); 252 &R2( 8, 0,$A,$B,$C,$D,$X,40, 4,0x289b7ec6); 253 &R2( 9, 0,$D,$A,$B,$C,$X,41,11,0xeaa127fa); 254 &R2(10, 0,$C,$D,$A,$B,$X,42,16,0xd4ef3085); 255 &R2(11, 0,$B,$C,$D,$A,$X,43,23,0x04881d05); 256 &R2(12, 0,$A,$B,$C,$D,$X,44, 4,0xd9d4d039); 257 &R2(13, 0,$D,$A,$B,$C,$X,45,11,0xe6db99e5); 258 &R2(14, 0,$C,$D,$A,$B,$X,46,16,0x1fa27cf8); 259 &R2(15, 1,$B,$C,$D,$A,$X,47,23,0xc4ac5665); 260 261 &comment(""); 262 &comment("R3 section"); 263 &R3(-1,$A,$B,$C,$D,$X,48, 6,0xf4292244); 264 &R3( 0,$D,$A,$B,$C,$X,49,10,0x432aff97); 265 &R3( 0,$C,$D,$A,$B,$X,50,15,0xab9423a7); 266 &R3( 0,$B,$C,$D,$A,$X,51,21,0xfc93a039); 267 &R3( 0,$A,$B,$C,$D,$X,52, 6,0x655b59c3); 268 &R3( 0,$D,$A,$B,$C,$X,53,10,0x8f0ccc92); 269 &R3( 0,$C,$D,$A,$B,$X,54,15,0xffeff47d); 270 &R3( 0,$B,$C,$D,$A,$X,55,21,0x85845dd1); 271 &R3( 0,$A,$B,$C,$D,$X,56, 6,0x6fa87e4f); 272 &R3( 0,$D,$A,$B,$C,$X,57,10,0xfe2ce6e0); 273 &R3( 0,$C,$D,$A,$B,$X,58,15,0xa3014314); 274 &R3( 0,$B,$C,$D,$A,$X,59,21,0x4e0811a1); 275 &R3( 0,$A,$B,$C,$D,$X,60, 6,0xf7537e82); 276 &R3( 0,$D,$A,$B,$C,$X,61,10,0xbd3af235); 277 &R3( 0,$C,$D,$A,$B,$X,62,15,0x2ad7d2bb); 278 &R3( 2,$B,$C,$D,$A,$X,63,21,0xeb86d391); 279 280 # &mov($tmp2,&wparam(0)); # done in the last R3 281 # &mov($tmp1, &DWP( 0,$tmp2,"",0)); # done is the last R3 282 283 &add($A,$tmp1); 284 &mov($tmp1, &DWP( 4,$tmp2,"",0)); 285 286 &add($B,$tmp1); 287 &mov($tmp1, &DWP( 8,$tmp2,"",0)); 288 289 &add($C,$tmp1); 290 &mov($tmp1, &DWP(12,$tmp2,"",0)); 291 292 &add($D,$tmp1); 293 &mov(&DWP( 0,$tmp2,"",0),$A); 294 295 &mov(&DWP( 4,$tmp2,"",0),$B); 296 &mov($tmp1,&swtmp(0)) unless $normal; 297 298 &mov(&DWP( 8,$tmp2,"",0),$C); 299 &mov(&DWP(12,$tmp2,"",0),$D); 300 301 &cmp($tmp1,$X) unless $normal; # check count 302 &jae(&label("start")) unless $normal; 303 304 &pop("eax"); # pop the temp variable off the stack 305 &pop("ebx"); 306 &pop("ebp"); 307 &pop("edi"); 308 &pop("esi"); 309 &ret(); 310 &function_end_B($name); 311 } 312 313
