Alexandre Savard | 1b09e31 | 2012-08-07 20:33:29 -0400 | [diff] [blame] | 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 | my $flavour = shift; |
| 112 | my $output = shift; |
| 113 | if ($flavour =~ /\./) { $output = $flavour; undef $flavour; } |
| 114 | |
| 115 | my $win64=0; $win64=1 if ($flavour =~ /[nm]asm|mingw64/ || $output =~ /\.asm$/); |
| 116 | |
| 117 | $0 =~ m/(.*[\/\\])[^\/\\]+$/; my $dir=$1; my $xlate; |
| 118 | ( $xlate="${dir}x86_64-xlate.pl" and -f $xlate ) or |
| 119 | ( $xlate="${dir}../../perlasm/x86_64-xlate.pl" and -f $xlate) or |
| 120 | die "can't locate x86_64-xlate.pl"; |
| 121 | |
| 122 | no warnings qw(uninitialized); |
| 123 | open STDOUT,"| $^X $xlate $flavour $output"; |
| 124 | |
| 125 | $code .= <<EOF; |
| 126 | .text |
| 127 | .align 16 |
| 128 | |
| 129 | .globl md5_block_asm_data_order |
| 130 | .type md5_block_asm_data_order,\@function,3 |
| 131 | md5_block_asm_data_order: |
| 132 | push %rbp |
| 133 | push %rbx |
| 134 | push %r12 |
| 135 | push %r14 |
| 136 | push %r15 |
| 137 | .Lprologue: |
| 138 | |
| 139 | # rdi = arg #1 (ctx, MD5_CTX pointer) |
| 140 | # rsi = arg #2 (ptr, data pointer) |
| 141 | # rdx = arg #3 (nbr, number of 16-word blocks to process) |
| 142 | mov %rdi, %rbp # rbp = ctx |
| 143 | shl \$6, %rdx # rdx = nbr in bytes |
| 144 | lea (%rsi,%rdx), %rdi # rdi = end |
| 145 | mov 0*4(%rbp), %eax # eax = ctx->A |
| 146 | mov 1*4(%rbp), %ebx # ebx = ctx->B |
| 147 | mov 2*4(%rbp), %ecx # ecx = ctx->C |
| 148 | mov 3*4(%rbp), %edx # edx = ctx->D |
| 149 | # end is 'rdi' |
| 150 | # ptr is 'rsi' |
| 151 | # A is 'eax' |
| 152 | # B is 'ebx' |
| 153 | # C is 'ecx' |
| 154 | # D is 'edx' |
| 155 | |
| 156 | cmp %rdi, %rsi # cmp end with ptr |
| 157 | je .Lend # jmp if ptr == end |
| 158 | |
| 159 | # BEGIN of loop over 16-word blocks |
| 160 | .Lloop: # save old values of A, B, C, D |
| 161 | mov %eax, %r8d |
| 162 | mov %ebx, %r9d |
| 163 | mov %ecx, %r14d |
| 164 | mov %edx, %r15d |
| 165 | EOF |
| 166 | round1_step(-1,'%eax','%ebx','%ecx','%edx', '1','0xd76aa478', '7'); |
| 167 | round1_step( 0,'%edx','%eax','%ebx','%ecx', '2','0xe8c7b756','12'); |
| 168 | round1_step( 0,'%ecx','%edx','%eax','%ebx', '3','0x242070db','17'); |
| 169 | round1_step( 0,'%ebx','%ecx','%edx','%eax', '4','0xc1bdceee','22'); |
| 170 | round1_step( 0,'%eax','%ebx','%ecx','%edx', '5','0xf57c0faf', '7'); |
| 171 | round1_step( 0,'%edx','%eax','%ebx','%ecx', '6','0x4787c62a','12'); |
| 172 | round1_step( 0,'%ecx','%edx','%eax','%ebx', '7','0xa8304613','17'); |
| 173 | round1_step( 0,'%ebx','%ecx','%edx','%eax', '8','0xfd469501','22'); |
| 174 | round1_step( 0,'%eax','%ebx','%ecx','%edx', '9','0x698098d8', '7'); |
| 175 | round1_step( 0,'%edx','%eax','%ebx','%ecx','10','0x8b44f7af','12'); |
| 176 | round1_step( 0,'%ecx','%edx','%eax','%ebx','11','0xffff5bb1','17'); |
| 177 | round1_step( 0,'%ebx','%ecx','%edx','%eax','12','0x895cd7be','22'); |
| 178 | round1_step( 0,'%eax','%ebx','%ecx','%edx','13','0x6b901122', '7'); |
| 179 | round1_step( 0,'%edx','%eax','%ebx','%ecx','14','0xfd987193','12'); |
| 180 | round1_step( 0,'%ecx','%edx','%eax','%ebx','15','0xa679438e','17'); |
| 181 | round1_step( 1,'%ebx','%ecx','%edx','%eax', '0','0x49b40821','22'); |
| 182 | |
| 183 | round2_step(-1,'%eax','%ebx','%ecx','%edx', '6','0xf61e2562', '5'); |
| 184 | round2_step( 0,'%edx','%eax','%ebx','%ecx','11','0xc040b340', '9'); |
| 185 | round2_step( 0,'%ecx','%edx','%eax','%ebx', '0','0x265e5a51','14'); |
| 186 | round2_step( 0,'%ebx','%ecx','%edx','%eax', '5','0xe9b6c7aa','20'); |
| 187 | round2_step( 0,'%eax','%ebx','%ecx','%edx','10','0xd62f105d', '5'); |
| 188 | round2_step( 0,'%edx','%eax','%ebx','%ecx','15', '0x2441453', '9'); |
| 189 | round2_step( 0,'%ecx','%edx','%eax','%ebx', '4','0xd8a1e681','14'); |
| 190 | round2_step( 0,'%ebx','%ecx','%edx','%eax', '9','0xe7d3fbc8','20'); |
| 191 | round2_step( 0,'%eax','%ebx','%ecx','%edx','14','0x21e1cde6', '5'); |
| 192 | round2_step( 0,'%edx','%eax','%ebx','%ecx', '3','0xc33707d6', '9'); |
| 193 | round2_step( 0,'%ecx','%edx','%eax','%ebx', '8','0xf4d50d87','14'); |
| 194 | round2_step( 0,'%ebx','%ecx','%edx','%eax','13','0x455a14ed','20'); |
| 195 | round2_step( 0,'%eax','%ebx','%ecx','%edx', '2','0xa9e3e905', '5'); |
| 196 | round2_step( 0,'%edx','%eax','%ebx','%ecx', '7','0xfcefa3f8', '9'); |
| 197 | round2_step( 0,'%ecx','%edx','%eax','%ebx','12','0x676f02d9','14'); |
| 198 | round2_step( 1,'%ebx','%ecx','%edx','%eax', '0','0x8d2a4c8a','20'); |
| 199 | |
| 200 | round3_step(-1,'%eax','%ebx','%ecx','%edx', '8','0xfffa3942', '4'); |
| 201 | round3_step( 0,'%edx','%eax','%ebx','%ecx','11','0x8771f681','11'); |
| 202 | round3_step( 0,'%ecx','%edx','%eax','%ebx','14','0x6d9d6122','16'); |
| 203 | round3_step( 0,'%ebx','%ecx','%edx','%eax', '1','0xfde5380c','23'); |
| 204 | round3_step( 0,'%eax','%ebx','%ecx','%edx', '4','0xa4beea44', '4'); |
| 205 | round3_step( 0,'%edx','%eax','%ebx','%ecx', '7','0x4bdecfa9','11'); |
| 206 | round3_step( 0,'%ecx','%edx','%eax','%ebx','10','0xf6bb4b60','16'); |
| 207 | round3_step( 0,'%ebx','%ecx','%edx','%eax','13','0xbebfbc70','23'); |
| 208 | round3_step( 0,'%eax','%ebx','%ecx','%edx', '0','0x289b7ec6', '4'); |
| 209 | round3_step( 0,'%edx','%eax','%ebx','%ecx', '3','0xeaa127fa','11'); |
| 210 | round3_step( 0,'%ecx','%edx','%eax','%ebx', '6','0xd4ef3085','16'); |
| 211 | round3_step( 0,'%ebx','%ecx','%edx','%eax', '9', '0x4881d05','23'); |
| 212 | round3_step( 0,'%eax','%ebx','%ecx','%edx','12','0xd9d4d039', '4'); |
| 213 | round3_step( 0,'%edx','%eax','%ebx','%ecx','15','0xe6db99e5','11'); |
| 214 | round3_step( 0,'%ecx','%edx','%eax','%ebx', '2','0x1fa27cf8','16'); |
| 215 | round3_step( 1,'%ebx','%ecx','%edx','%eax', '0','0xc4ac5665','23'); |
| 216 | |
| 217 | round4_step(-1,'%eax','%ebx','%ecx','%edx', '7','0xf4292244', '6'); |
| 218 | round4_step( 0,'%edx','%eax','%ebx','%ecx','14','0x432aff97','10'); |
| 219 | round4_step( 0,'%ecx','%edx','%eax','%ebx', '5','0xab9423a7','15'); |
| 220 | round4_step( 0,'%ebx','%ecx','%edx','%eax','12','0xfc93a039','21'); |
| 221 | round4_step( 0,'%eax','%ebx','%ecx','%edx', '3','0x655b59c3', '6'); |
| 222 | round4_step( 0,'%edx','%eax','%ebx','%ecx','10','0x8f0ccc92','10'); |
| 223 | round4_step( 0,'%ecx','%edx','%eax','%ebx', '1','0xffeff47d','15'); |
| 224 | round4_step( 0,'%ebx','%ecx','%edx','%eax', '8','0x85845dd1','21'); |
| 225 | round4_step( 0,'%eax','%ebx','%ecx','%edx','15','0x6fa87e4f', '6'); |
| 226 | round4_step( 0,'%edx','%eax','%ebx','%ecx', '6','0xfe2ce6e0','10'); |
| 227 | round4_step( 0,'%ecx','%edx','%eax','%ebx','13','0xa3014314','15'); |
| 228 | round4_step( 0,'%ebx','%ecx','%edx','%eax', '4','0x4e0811a1','21'); |
| 229 | round4_step( 0,'%eax','%ebx','%ecx','%edx','11','0xf7537e82', '6'); |
| 230 | round4_step( 0,'%edx','%eax','%ebx','%ecx', '2','0xbd3af235','10'); |
| 231 | round4_step( 0,'%ecx','%edx','%eax','%ebx', '9','0x2ad7d2bb','15'); |
| 232 | round4_step( 1,'%ebx','%ecx','%edx','%eax', '0','0xeb86d391','21'); |
| 233 | $code .= <<EOF; |
| 234 | # add old values of A, B, C, D |
| 235 | add %r8d, %eax |
| 236 | add %r9d, %ebx |
| 237 | add %r14d, %ecx |
| 238 | add %r15d, %edx |
| 239 | |
| 240 | # loop control |
| 241 | add \$64, %rsi # ptr += 64 |
| 242 | cmp %rdi, %rsi # cmp end with ptr |
| 243 | jb .Lloop # jmp if ptr < end |
| 244 | # END of loop over 16-word blocks |
| 245 | |
| 246 | .Lend: |
| 247 | mov %eax, 0*4(%rbp) # ctx->A = A |
| 248 | mov %ebx, 1*4(%rbp) # ctx->B = B |
| 249 | mov %ecx, 2*4(%rbp) # ctx->C = C |
| 250 | mov %edx, 3*4(%rbp) # ctx->D = D |
| 251 | |
| 252 | mov (%rsp),%r15 |
| 253 | mov 8(%rsp),%r14 |
| 254 | mov 16(%rsp),%r12 |
| 255 | mov 24(%rsp),%rbx |
| 256 | mov 32(%rsp),%rbp |
| 257 | add \$40,%rsp |
| 258 | .Lepilogue: |
| 259 | ret |
| 260 | .size md5_block_asm_data_order,.-md5_block_asm_data_order |
| 261 | EOF |
| 262 | |
| 263 | # EXCEPTION_DISPOSITION handler (EXCEPTION_RECORD *rec,ULONG64 frame, |
| 264 | # CONTEXT *context,DISPATCHER_CONTEXT *disp) |
| 265 | if ($win64) { |
| 266 | my $rec="%rcx"; |
| 267 | my $frame="%rdx"; |
| 268 | my $context="%r8"; |
| 269 | my $disp="%r9"; |
| 270 | |
| 271 | $code.=<<___; |
| 272 | .extern __imp_RtlVirtualUnwind |
| 273 | .type se_handler,\@abi-omnipotent |
| 274 | .align 16 |
| 275 | se_handler: |
| 276 | push %rsi |
| 277 | push %rdi |
| 278 | push %rbx |
| 279 | push %rbp |
| 280 | push %r12 |
| 281 | push %r13 |
| 282 | push %r14 |
| 283 | push %r15 |
| 284 | pushfq |
| 285 | sub \$64,%rsp |
| 286 | |
| 287 | mov 120($context),%rax # pull context->Rax |
| 288 | mov 248($context),%rbx # pull context->Rip |
| 289 | |
| 290 | lea .Lprologue(%rip),%r10 |
| 291 | cmp %r10,%rbx # context->Rip<.Lprologue |
| 292 | jb .Lin_prologue |
| 293 | |
| 294 | mov 152($context),%rax # pull context->Rsp |
| 295 | |
| 296 | lea .Lepilogue(%rip),%r10 |
| 297 | cmp %r10,%rbx # context->Rip>=.Lepilogue |
| 298 | jae .Lin_prologue |
| 299 | |
| 300 | lea 40(%rax),%rax |
| 301 | |
| 302 | mov -8(%rax),%rbp |
| 303 | mov -16(%rax),%rbx |
| 304 | mov -24(%rax),%r12 |
| 305 | mov -32(%rax),%r14 |
| 306 | mov -40(%rax),%r15 |
| 307 | mov %rbx,144($context) # restore context->Rbx |
| 308 | mov %rbp,160($context) # restore context->Rbp |
| 309 | mov %r12,216($context) # restore context->R12 |
| 310 | mov %r14,232($context) # restore context->R14 |
| 311 | mov %r15,240($context) # restore context->R15 |
| 312 | |
| 313 | .Lin_prologue: |
| 314 | mov 8(%rax),%rdi |
| 315 | mov 16(%rax),%rsi |
| 316 | mov %rax,152($context) # restore context->Rsp |
| 317 | mov %rsi,168($context) # restore context->Rsi |
| 318 | mov %rdi,176($context) # restore context->Rdi |
| 319 | |
| 320 | mov 40($disp),%rdi # disp->ContextRecord |
| 321 | mov $context,%rsi # context |
| 322 | mov \$154,%ecx # sizeof(CONTEXT) |
| 323 | .long 0xa548f3fc # cld; rep movsq |
| 324 | |
| 325 | mov $disp,%rsi |
| 326 | xor %rcx,%rcx # arg1, UNW_FLAG_NHANDLER |
| 327 | mov 8(%rsi),%rdx # arg2, disp->ImageBase |
| 328 | mov 0(%rsi),%r8 # arg3, disp->ControlPc |
| 329 | mov 16(%rsi),%r9 # arg4, disp->FunctionEntry |
| 330 | mov 40(%rsi),%r10 # disp->ContextRecord |
| 331 | lea 56(%rsi),%r11 # &disp->HandlerData |
| 332 | lea 24(%rsi),%r12 # &disp->EstablisherFrame |
| 333 | mov %r10,32(%rsp) # arg5 |
| 334 | mov %r11,40(%rsp) # arg6 |
| 335 | mov %r12,48(%rsp) # arg7 |
| 336 | mov %rcx,56(%rsp) # arg8, (NULL) |
| 337 | call *__imp_RtlVirtualUnwind(%rip) |
| 338 | |
| 339 | mov \$1,%eax # ExceptionContinueSearch |
| 340 | add \$64,%rsp |
| 341 | popfq |
| 342 | pop %r15 |
| 343 | pop %r14 |
| 344 | pop %r13 |
| 345 | pop %r12 |
| 346 | pop %rbp |
| 347 | pop %rbx |
| 348 | pop %rdi |
| 349 | pop %rsi |
| 350 | ret |
| 351 | .size se_handler,.-se_handler |
| 352 | |
| 353 | .section .pdata |
| 354 | .align 4 |
| 355 | .rva .LSEH_begin_md5_block_asm_data_order |
| 356 | .rva .LSEH_end_md5_block_asm_data_order |
| 357 | .rva .LSEH_info_md5_block_asm_data_order |
| 358 | |
| 359 | .section .xdata |
| 360 | .align 8 |
| 361 | .LSEH_info_md5_block_asm_data_order: |
| 362 | .byte 9,0,0,0 |
| 363 | .rva se_handler |
| 364 | ___ |
| 365 | } |
| 366 | |
| 367 | print $code; |
| 368 | |
| 369 | close STDOUT; |