1 #!/usr/bin/perl -w 2 # 3 # MD5 optimized for AMD64. 4 # 5 # Author: Marc Bevand <bevand_m (at) epita.fr> 6 # Licence: I hereby disclaim the copyright on this code and place it 7 # in the public domain. 8 # 9 10 use strict; 11 12 my $code; 13 14 # round1_step() does: 15 # dst = x + ((dst + F(x,y,z) + X[k] + T_i) <<< s) 16 # %r10d = X[k_next] 17 # %r11d = z' (copy of z for the next step) 18 # Each round1_step() takes about 5.3 clocks (9 instructions, 1.7 IPC) 19 sub round1_step 20 { 21 my ($pos, $dst, $x, $y, $z, $k_next, $T_i, $s) = @_; 22 $code .= " mov 0*4(%rsi), %r10d /* (NEXT STEP) X[0] */\n" if ($pos == -1); 23 $code .= " mov %edx, %r11d /* (NEXT STEP) z' = %edx */\n" if ($pos == -1); 24 $code .= <<EOF; 25 xor $y, %r11d /* y ^ ... */ 26 lea $T_i($dst,%r10d),$dst /* Const + dst + ... */ 27 and $x, %r11d /* x & ... */ 28 xor $z, %r11d /* z ^ ... */ 29 mov $k_next*4(%rsi),%r10d /* (NEXT STEP) X[$k_next] */ 30 add %r11d, $dst /* dst += ... */ 31 rol \$$s, $dst /* dst <<< s */ 32 mov $y, %r11d /* (NEXT STEP) z' = $y */ 33 add $x, $dst /* dst += x */ 34 EOF 35 } 36 37 # round2_step() does: 38 # dst = x + ((dst + G(x,y,z) + X[k] + T_i) <<< s) 39 # %r10d = X[k_next] 40 # %r11d = z' (copy of z for the next step) 41 # %r12d = z' (copy of z for the next step) 42 # Each round2_step() takes about 5.4 clocks (11 instructions, 2.0 IPC) 43 sub round2_step 44 { 45 my ($pos, $dst, $x, $y, $z, $k_next, $T_i, $s) = @_; 46 $code .= " mov 1*4(%rsi), %r10d /* (NEXT STEP) X[1] */\n" if ($pos == -1); 47 $code .= " mov %edx, %r11d /* (NEXT STEP) z' = %edx */\n" if ($pos == -1); 48 $code .= " mov %edx, %r12d /* (NEXT STEP) z' = %edx */\n" if ($pos == -1); 49 $code .= <<EOF; 50 not %r11d /* not z */ 51 lea $T_i($dst,%r10d),$dst /* Const + dst + ... */ 52 and $x, %r12d /* x & z */ 53 and $y, %r11d /* y & (not z) */ 54 mov $k_next*4(%rsi),%r10d /* (NEXT STEP) X[$k_next] */ 55 or %r11d, %r12d /* (y & (not z)) | (x & z) */ 56 mov $y, %r11d /* (NEXT STEP) z' = $y */ 57 add %r12d, $dst /* dst += ... */ 58 mov $y, %r12d /* (NEXT STEP) z' = $y */ 59 rol \$$s, $dst /* dst <<< s */ 60 add $x, $dst /* dst += x */ 61 EOF 62 } 63 64 # round3_step() does: 65 # dst = x + ((dst + H(x,y,z) + X[k] + T_i) <<< s) 66 # %r10d = X[k_next] 67 # %r11d = y' (copy of y for the next step) 68 # Each round3_step() takes about 4.2 clocks (8 instructions, 1.9 IPC) 69 sub round3_step 70 { 71 my ($pos, $dst, $x, $y, $z, $k_next, $T_i, $s) = @_; 72 $code .= " mov 5*4(%rsi), %r10d /* (NEXT STEP) X[5] */\n" if ($pos == -1); 73 $code .= " mov %ecx, %r11d /* (NEXT STEP) y' = %ecx */\n" if ($pos == -1); 74 $code .= <<EOF; 75 lea $T_i($dst,%r10d),$dst /* Const + dst + ... */ 76 mov $k_next*4(%rsi),%r10d /* (NEXT STEP) X[$k_next] */ 77 xor $z, %r11d /* z ^ ... */ 78 xor $x, %r11d /* x ^ ... */ 79 add %r11d, $dst /* dst += ... */ 80 rol \$$s, $dst /* dst <<< s */ 81 mov $x, %r11d /* (NEXT STEP) y' = $x */ 82 add $x, $dst /* dst += x */ 83 EOF 84 } 85 86 # round4_step() does: 87 # dst = x + ((dst + I(x,y,z) + X[k] + T_i) <<< s) 88 # %r10d = X[k_next] 89 # %r11d = not z' (copy of not z for the next step) 90 # Each round4_step() takes about 5.2 clocks (9 instructions, 1.7 IPC) 91 sub round4_step 92 { 93 my ($pos, $dst, $x, $y, $z, $k_next, $T_i, $s) = @_; 94 $code .= " mov 0*4(%rsi), %r10d /* (NEXT STEP) X[0] */\n" if ($pos == -1); 95 $code .= " mov \$0xffffffff, %r11d\n" if ($pos == -1); 96 $code .= " xor %edx, %r11d /* (NEXT STEP) not z' = not %edx*/\n" 97 if ($pos == -1); 98 $code .= <<EOF; 99 lea $T_i($dst,%r10d),$dst /* Const + dst + ... */ 100 or $x, %r11d /* x | ... */ 101 xor $y, %r11d /* y ^ ... */ 102 add %r11d, $dst /* dst += ... */ 103 mov $k_next*4(%rsi),%r10d /* (NEXT STEP) X[$k_next] */ 104 mov \$0xffffffff, %r11d 105 rol \$$s, $dst /* dst <<< s */ 106 xor $y, %r11d /* (NEXT STEP) not z' = not $y */ 107 add $x, $dst /* dst += x */ 108 EOF 109 } 110 111 no warnings qw(uninitialized); 112 my $flavour = shift; 113 my $output = shift; 114 if ($flavour =~ /\./) { $output = $flavour; undef $flavour; } 115 116 my $win64=0; $win64=1 if ($flavour =~ /[nm]asm|mingw64/ || $output =~ /\.asm$/); 117 118 $0 =~ m/(.*[\/\\])[^\/\\]+$/; my $dir=$1; my $xlate; 119 ( $xlate="${dir}x86_64-xlate.pl" and -f $xlate ) or 120 ( $xlate="${dir}../../perlasm/x86_64-xlate.pl" and -f $xlate) or 121 die "can't locate x86_64-xlate.pl"; 122 123 open OUT,"| \"$^X\" \"$xlate\" $flavour \"$output\""; 124 *STDOUT=*OUT; 125 126 $code .= <<EOF; 127 .text 128 .align 16 129 130 .globl md5_block_asm_data_order 131 .type md5_block_asm_data_order,\@function,3 132 md5_block_asm_data_order: 133 push %rbp 134 push %rbx 135 push %r12 136 push %r14 137 push %r15 138 .Lprologue: 139 140 # rdi = arg #1 (ctx, MD5_CTX pointer) 141 # rsi = arg #2 (ptr, data pointer) 142 # rdx = arg #3 (nbr, number of 16-word blocks to process) 143 mov %rdi, %rbp # rbp = ctx 144 shl \$6, %rdx # rdx = nbr in bytes 145 lea (%rsi,%rdx), %rdi # rdi = end 146 mov 0*4(%rbp), %eax # eax = ctx->A 147 mov 1*4(%rbp), %ebx # ebx = ctx->B 148 mov 2*4(%rbp), %ecx # ecx = ctx->C 149 mov 3*4(%rbp), %edx # edx = ctx->D 150 # end is 'rdi' 151 # ptr is 'rsi' 152 # A is 'eax' 153 # B is 'ebx' 154 # C is 'ecx' 155 # D is 'edx' 156 157 cmp %rdi, %rsi # cmp end with ptr 158 je .Lend # jmp if ptr == end 159 160 # BEGIN of loop over 16-word blocks 161 .Lloop: # save old values of A, B, C, D 162 mov %eax, %r8d 163 mov %ebx, %r9d 164 mov %ecx, %r14d 165 mov %edx, %r15d 166 EOF 167 round1_step(-1,'%eax','%ebx','%ecx','%edx', '1','0xd76aa478', '7'); 168 round1_step( 0,'%edx','%eax','%ebx','%ecx', '2','0xe8c7b756','12'); 169 round1_step( 0,'%ecx','%edx','%eax','%ebx', '3','0x242070db','17'); 170 round1_step( 0,'%ebx','%ecx','%edx','%eax', '4','0xc1bdceee','22'); 171 round1_step( 0,'%eax','%ebx','%ecx','%edx', '5','0xf57c0faf', '7'); 172 round1_step( 0,'%edx','%eax','%ebx','%ecx', '6','0x4787c62a','12'); 173 round1_step( 0,'%ecx','%edx','%eax','%ebx', '7','0xa8304613','17'); 174 round1_step( 0,'%ebx','%ecx','%edx','%eax', '8','0xfd469501','22'); 175 round1_step( 0,'%eax','%ebx','%ecx','%edx', '9','0x698098d8', '7'); 176 round1_step( 0,'%edx','%eax','%ebx','%ecx','10','0x8b44f7af','12'); 177 round1_step( 0,'%ecx','%edx','%eax','%ebx','11','0xffff5bb1','17'); 178 round1_step( 0,'%ebx','%ecx','%edx','%eax','12','0x895cd7be','22'); 179 round1_step( 0,'%eax','%ebx','%ecx','%edx','13','0x6b901122', '7'); 180 round1_step( 0,'%edx','%eax','%ebx','%ecx','14','0xfd987193','12'); 181 round1_step( 0,'%ecx','%edx','%eax','%ebx','15','0xa679438e','17'); 182 round1_step( 1,'%ebx','%ecx','%edx','%eax', '0','0x49b40821','22'); 183 184 round2_step(-1,'%eax','%ebx','%ecx','%edx', '6','0xf61e2562', '5'); 185 round2_step( 0,'%edx','%eax','%ebx','%ecx','11','0xc040b340', '9'); 186 round2_step( 0,'%ecx','%edx','%eax','%ebx', '0','0x265e5a51','14'); 187 round2_step( 0,'%ebx','%ecx','%edx','%eax', '5','0xe9b6c7aa','20'); 188 round2_step( 0,'%eax','%ebx','%ecx','%edx','10','0xd62f105d', '5'); 189 round2_step( 0,'%edx','%eax','%ebx','%ecx','15', '0x2441453', '9'); 190 round2_step( 0,'%ecx','%edx','%eax','%ebx', '4','0xd8a1e681','14'); 191 round2_step( 0,'%ebx','%ecx','%edx','%eax', '9','0xe7d3fbc8','20'); 192 round2_step( 0,'%eax','%ebx','%ecx','%edx','14','0x21e1cde6', '5'); 193 round2_step( 0,'%edx','%eax','%ebx','%ecx', '3','0xc33707d6', '9'); 194 round2_step( 0,'%ecx','%edx','%eax','%ebx', '8','0xf4d50d87','14'); 195 round2_step( 0,'%ebx','%ecx','%edx','%eax','13','0x455a14ed','20'); 196 round2_step( 0,'%eax','%ebx','%ecx','%edx', '2','0xa9e3e905', '5'); 197 round2_step( 0,'%edx','%eax','%ebx','%ecx', '7','0xfcefa3f8', '9'); 198 round2_step( 0,'%ecx','%edx','%eax','%ebx','12','0x676f02d9','14'); 199 round2_step( 1,'%ebx','%ecx','%edx','%eax', '0','0x8d2a4c8a','20'); 200 201 round3_step(-1,'%eax','%ebx','%ecx','%edx', '8','0xfffa3942', '4'); 202 round3_step( 0,'%edx','%eax','%ebx','%ecx','11','0x8771f681','11'); 203 round3_step( 0,'%ecx','%edx','%eax','%ebx','14','0x6d9d6122','16'); 204 round3_step( 0,'%ebx','%ecx','%edx','%eax', '1','0xfde5380c','23'); 205 round3_step( 0,'%eax','%ebx','%ecx','%edx', '4','0xa4beea44', '4'); 206 round3_step( 0,'%edx','%eax','%ebx','%ecx', '7','0x4bdecfa9','11'); 207 round3_step( 0,'%ecx','%edx','%eax','%ebx','10','0xf6bb4b60','16'); 208 round3_step( 0,'%ebx','%ecx','%edx','%eax','13','0xbebfbc70','23'); 209 round3_step( 0,'%eax','%ebx','%ecx','%edx', '0','0x289b7ec6', '4'); 210 round3_step( 0,'%edx','%eax','%ebx','%ecx', '3','0xeaa127fa','11'); 211 round3_step( 0,'%ecx','%edx','%eax','%ebx', '6','0xd4ef3085','16'); 212 round3_step( 0,'%ebx','%ecx','%edx','%eax', '9', '0x4881d05','23'); 213 round3_step( 0,'%eax','%ebx','%ecx','%edx','12','0xd9d4d039', '4'); 214 round3_step( 0,'%edx','%eax','%ebx','%ecx','15','0xe6db99e5','11'); 215 round3_step( 0,'%ecx','%edx','%eax','%ebx', '2','0x1fa27cf8','16'); 216 round3_step( 1,'%ebx','%ecx','%edx','%eax', '0','0xc4ac5665','23'); 217 218 round4_step(-1,'%eax','%ebx','%ecx','%edx', '7','0xf4292244', '6'); 219 round4_step( 0,'%edx','%eax','%ebx','%ecx','14','0x432aff97','10'); 220 round4_step( 0,'%ecx','%edx','%eax','%ebx', '5','0xab9423a7','15'); 221 round4_step( 0,'%ebx','%ecx','%edx','%eax','12','0xfc93a039','21'); 222 round4_step( 0,'%eax','%ebx','%ecx','%edx', '3','0x655b59c3', '6'); 223 round4_step( 0,'%edx','%eax','%ebx','%ecx','10','0x8f0ccc92','10'); 224 round4_step( 0,'%ecx','%edx','%eax','%ebx', '1','0xffeff47d','15'); 225 round4_step( 0,'%ebx','%ecx','%edx','%eax', '8','0x85845dd1','21'); 226 round4_step( 0,'%eax','%ebx','%ecx','%edx','15','0x6fa87e4f', '6'); 227 round4_step( 0,'%edx','%eax','%ebx','%ecx', '6','0xfe2ce6e0','10'); 228 round4_step( 0,'%ecx','%edx','%eax','%ebx','13','0xa3014314','15'); 229 round4_step( 0,'%ebx','%ecx','%edx','%eax', '4','0x4e0811a1','21'); 230 round4_step( 0,'%eax','%ebx','%ecx','%edx','11','0xf7537e82', '6'); 231 round4_step( 0,'%edx','%eax','%ebx','%ecx', '2','0xbd3af235','10'); 232 round4_step( 0,'%ecx','%edx','%eax','%ebx', '9','0x2ad7d2bb','15'); 233 round4_step( 1,'%ebx','%ecx','%edx','%eax', '0','0xeb86d391','21'); 234 $code .= <<EOF; 235 # add old values of A, B, C, D 236 add %r8d, %eax 237 add %r9d, %ebx 238 add %r14d, %ecx 239 add %r15d, %edx 240 241 # loop control 242 add \$64, %rsi # ptr += 64 243 cmp %rdi, %rsi # cmp end with ptr 244 jb .Lloop # jmp if ptr < end 245 # END of loop over 16-word blocks 246 247 .Lend: 248 mov %eax, 0*4(%rbp) # ctx->A = A 249 mov %ebx, 1*4(%rbp) # ctx->B = B 250 mov %ecx, 2*4(%rbp) # ctx->C = C 251 mov %edx, 3*4(%rbp) # ctx->D = D 252 253 mov (%rsp),%r15 254 mov 8(%rsp),%r14 255 mov 16(%rsp),%r12 256 mov 24(%rsp),%rbx 257 mov 32(%rsp),%rbp 258 add \$40,%rsp 259 .Lepilogue: 260 ret 261 .size md5_block_asm_data_order,.-md5_block_asm_data_order 262 EOF 263 264 # EXCEPTION_DISPOSITION handler (EXCEPTION_RECORD *rec,ULONG64 frame, 265 # CONTEXT *context,DISPATCHER_CONTEXT *disp) 266 if ($win64) { 267 my $rec="%rcx"; 268 my $frame="%rdx"; 269 my $context="%r8"; 270 my $disp="%r9"; 271 272 $code.=<<___; 273 .extern __imp_RtlVirtualUnwind 274 .type se_handler,\@abi-omnipotent 275 .align 16 276 se_handler: 277 push %rsi 278 push %rdi 279 push %rbx 280 push %rbp 281 push %r12 282 push %r13 283 push %r14 284 push %r15 285 pushfq 286 sub \$64,%rsp 287 288 mov 120($context),%rax # pull context->Rax 289 mov 248($context),%rbx # pull context->Rip 290 291 lea .Lprologue(%rip),%r10 292 cmp %r10,%rbx # context->Rip<.Lprologue 293 jb .Lin_prologue 294 295 mov 152($context),%rax # pull context->Rsp 296 297 lea .Lepilogue(%rip),%r10 298 cmp %r10,%rbx # context->Rip>=.Lepilogue 299 jae .Lin_prologue 300 301 lea 40(%rax),%rax 302 303 mov -8(%rax),%rbp 304 mov -16(%rax),%rbx 305 mov -24(%rax),%r12 306 mov -32(%rax),%r14 307 mov -40(%rax),%r15 308 mov %rbx,144($context) # restore context->Rbx 309 mov %rbp,160($context) # restore context->Rbp 310 mov %r12,216($context) # restore context->R12 311 mov %r14,232($context) # restore context->R14 312 mov %r15,240($context) # restore context->R15 313 314 .Lin_prologue: 315 mov 8(%rax),%rdi 316 mov 16(%rax),%rsi 317 mov %rax,152($context) # restore context->Rsp 318 mov %rsi,168($context) # restore context->Rsi 319 mov %rdi,176($context) # restore context->Rdi 320 321 mov 40($disp),%rdi # disp->ContextRecord 322 mov $context,%rsi # context 323 mov \$154,%ecx # sizeof(CONTEXT) 324 .long 0xa548f3fc # cld; rep movsq 325 326 mov $disp,%rsi 327 xor %rcx,%rcx # arg1, UNW_FLAG_NHANDLER 328 mov 8(%rsi),%rdx # arg2, disp->ImageBase 329 mov 0(%rsi),%r8 # arg3, disp->ControlPc 330 mov 16(%rsi),%r9 # arg4, disp->FunctionEntry 331 mov 40(%rsi),%r10 # disp->ContextRecord 332 lea 56(%rsi),%r11 # &disp->HandlerData 333 lea 24(%rsi),%r12 # &disp->EstablisherFrame 334 mov %r10,32(%rsp) # arg5 335 mov %r11,40(%rsp) # arg6 336 mov %r12,48(%rsp) # arg7 337 mov %rcx,56(%rsp) # arg8, (NULL) 338 call *__imp_RtlVirtualUnwind(%rip) 339 340 mov \$1,%eax # ExceptionContinueSearch 341 add \$64,%rsp 342 popfq 343 pop %r15 344 pop %r14 345 pop %r13 346 pop %r12 347 pop %rbp 348 pop %rbx 349 pop %rdi 350 pop %rsi 351 ret 352 .size se_handler,.-se_handler 353 354 .section .pdata 355 .align 4 356 .rva .LSEH_begin_md5_block_asm_data_order 357 .rva .LSEH_end_md5_block_asm_data_order 358 .rva .LSEH_info_md5_block_asm_data_order 359 360 .section .xdata 361 .align 8 362 .LSEH_info_md5_block_asm_data_order: 363 .byte 9,0,0,0 364 .rva se_handler 365 ___ 366 } 367 368 print $code; 369 370 close STDOUT; 371
