|
| 1 | +#!/usr/bin/env perl |
| 2 | +# |
| 3 | +# ==================================================================== |
| 4 | +# Written by Andy Polyakov <appro@fy.chalmers.se> for the OpenSSL |
| 5 | +# project. Rights for redistribution and usage in source and binary |
| 6 | +# forms are granted according to the OpenSSL license. |
| 7 | +# ==================================================================== |
| 8 | +# |
| 9 | +# sha256/512_block procedure for x86_64. |
| 10 | +# |
| 11 | +# 40% improvement over compiler-generated code on Opteron. On EM64T |
| 12 | +# sha256 was observed to run >80% faster and sha512 - >40%. No magical |
| 13 | +# tricks, just straight implementation... I really wonder why gcc |
| 14 | +# [being armed with inline assembler] fails to generate as fast code. |
| 15 | +# The only thing which is cool about this module is that it's very |
| 16 | +# same instruction sequence used for both SHA-256 and SHA-512. In |
| 17 | +# former case the instructions operate on 32-bit operands, while in |
| 18 | +# latter - on 64-bit ones. All I had to do is to get one flavor right, |
| 19 | +# the other one passed the test right away:-) |
| 20 | +# |
| 21 | +# sha256_block runs in ~1005 cycles on Opteron, which gives you |
| 22 | +# asymptotic performance of 64*1000/1005=63.7MBps times CPU clock |
| 23 | +# frequency in GHz. sha512_block runs in ~1275 cycles, which results |
| 24 | +# in 128*1000/1275=100MBps per GHz. Is there room for improvement? |
| 25 | +# Well, if you compare it to IA-64 implementation, which maintains |
| 26 | +# X[16] in register bank[!], tends to 4 instructions per CPU clock |
| 27 | +# cycle and runs in 1003 cycles, 1275 is very good result for 3-way |
| 28 | +# issue Opteron pipeline and X[16] maintained in memory. So that *if* |
| 29 | +# there is a way to improve it, *then* the only way would be to try to |
| 30 | +# offload X[16] updates to SSE unit, but that would require "deeper" |
| 31 | +# loop unroll, which in turn would naturally cause size blow-up, not |
| 32 | +# to mention increased complexity! And once again, only *if* it's |
| 33 | +# actually possible to noticeably improve overall ILP, instruction |
| 34 | +# level parallelism, on a given CPU implementation in this case. |
| 35 | +# |
| 36 | +# Special note on Intel EM64T. While Opteron CPU exhibits perfect |
| 37 | +# perfromance ratio of 1.5 between 64- and 32-bit flavors [see above], |
| 38 | +# [currently available] EM64T CPUs apparently are far from it. On the |
| 39 | +# contrary, 64-bit version, sha512_block, is ~30% *slower* than 32-bit |
| 40 | +# sha256_block:-( This is presumably because 64-bit shifts/rotates |
| 41 | +# apparently are not atomic instructions, but implemented in microcode. |
| 42 | + |
| 43 | +$flavour = shift; |
| 44 | +$output = shift; |
| 45 | +if ($flavour =~ /\./) { $output = $flavour; undef $flavour; } |
| 46 | + |
| 47 | +$win64=0; $win64=1 if ($flavour =~ /[nm]asm|mingw64/ || $output =~ /\.asm$/); |
| 48 | + |
| 49 | +$0 =~ m/(.*[\/\\])[^\/\\]+$/; $dir=$1; |
| 50 | +( $xlate="${dir}x86_64-xlate.pl" and -f $xlate ) or |
| 51 | +( $xlate="${dir}../../perlasm/x86_64-xlate.pl" and -f $xlate) or |
| 52 | +die "can't locate x86_64-xlate.pl"; |
| 53 | + |
| 54 | +open OUT,"| \"$^X\" $xlate $flavour $output"; |
| 55 | +*STDOUT=*OUT; |
| 56 | + |
| 57 | +$func="sha256_block_data_order"; |
| 58 | +$TABLE="K256"; |
| 59 | +$SZ=4; |
| 60 | +@ROT=($A,$B,$C,$D,$E,$F,$G,$H)=("%eax","%ebx","%ecx","%edx", |
| 61 | + "%r8d","%r9d","%r10d","%r11d"); |
| 62 | +($T1,$a0,$a1,$a2)=("%r12d","%r13d","%r14d","%r15d"); |
| 63 | +@Sigma0=( 2,13,22); |
| 64 | +@Sigma1=( 6,11,25); |
| 65 | +@sigma0=( 7,18, 3); |
| 66 | +@sigma1=(17,19,10); |
| 67 | +$rounds=64; |
| 68 | + |
| 69 | + |
| 70 | +$ctx="%rdi"; # 1st arg |
| 71 | +$round="%rdi"; # zaps $ctx |
| 72 | +$inp="%rsi"; # 2nd arg |
| 73 | +$Tbl="%rbp"; |
| 74 | + |
| 75 | +$_ctx="16*$SZ+0*8(%rsp)"; |
| 76 | +$_inp="16*$SZ+1*8(%rsp)"; |
| 77 | +$_end="16*$SZ+2*8(%rsp)"; |
| 78 | +$_rsp="16*$SZ+3*8(%rsp)"; |
| 79 | +$framesz="16*$SZ+4*8"; |
| 80 | + |
| 81 | + |
| 82 | +sub ROUND_00_15() |
| 83 | +{ my ($i,$a,$b,$c,$d,$e,$f,$g,$h) = @_; |
| 84 | + |
| 85 | +$code.=<<___; |
| 86 | + ror \$`$Sigma1[2]-$Sigma1[1]`,$a0 |
| 87 | + mov $f,$a2 |
| 88 | + mov $T1,`$SZ*($i&0xf)`(%rsp) |
| 89 | +
|
| 90 | + ror \$`$Sigma0[2]-$Sigma0[1]`,$a1 |
| 91 | + xor $e,$a0 |
| 92 | + xor $g,$a2 # f^g |
| 93 | +
|
| 94 | + ror \$`$Sigma1[1]-$Sigma1[0]`,$a0 |
| 95 | + add $h,$T1 # T1+=h |
| 96 | + xor $a,$a1 |
| 97 | +
|
| 98 | + add ($Tbl,$round,$SZ),$T1 # T1+=K[round] |
| 99 | + and $e,$a2 # (f^g)&e |
| 100 | + mov $b,$h |
| 101 | +
|
| 102 | + ror \$`$Sigma0[1]-$Sigma0[0]`,$a1 |
| 103 | + xor $e,$a0 |
| 104 | + xor $g,$a2 # Ch(e,f,g)=((f^g)&e)^g |
| 105 | +
|
| 106 | + xor $c,$h # b^c |
| 107 | + xor $a,$a1 |
| 108 | + add $a2,$T1 # T1+=Ch(e,f,g) |
| 109 | + mov $b,$a2 |
| 110 | +
|
| 111 | + ror \$$Sigma1[0],$a0 # Sigma1(e) |
| 112 | + and $a,$h # h=(b^c)&a |
| 113 | + and $c,$a2 # b&c |
| 114 | +
|
| 115 | + ror \$$Sigma0[0],$a1 # Sigma0(a) |
| 116 | + add $a0,$T1 # T1+=Sigma1(e) |
| 117 | + add $a2,$h # h+=b&c (completes +=Maj(a,b,c) |
| 118 | +
|
| 119 | + add $T1,$d # d+=T1 |
| 120 | + add $T1,$h # h+=T1 |
| 121 | + lea 1($round),$round # round++ |
| 122 | + add $a1,$h # h+=Sigma0(a) |
| 123 | +
|
| 124 | +___ |
| 125 | +} |
| 126 | + |
| 127 | +sub ROUND_16_XX() |
| 128 | +{ my ($i,$a,$b,$c,$d,$e,$f,$g,$h) = @_; |
| 129 | + |
| 130 | +$code.=<<___; |
| 131 | + mov `$SZ*(($i+1)&0xf)`(%rsp),$a0 |
| 132 | + mov `$SZ*(($i+14)&0xf)`(%rsp),$a1 |
| 133 | + mov $a0,$T1 |
| 134 | + mov $a1,$a2 |
| 135 | +
|
| 136 | + ror \$`$sigma0[1]-$sigma0[0]`,$T1 |
| 137 | + xor $a0,$T1 |
| 138 | + shr \$$sigma0[2],$a0 |
| 139 | +
|
| 140 | + ror \$$sigma0[0],$T1 |
| 141 | + xor $T1,$a0 # sigma0(X[(i+1)&0xf]) |
| 142 | + mov `$SZ*(($i+9)&0xf)`(%rsp),$T1 |
| 143 | +
|
| 144 | + ror \$`$sigma1[1]-$sigma1[0]`,$a2 |
| 145 | + xor $a1,$a2 |
| 146 | + shr \$$sigma1[2],$a1 |
| 147 | +
|
| 148 | + ror \$$sigma1[0],$a2 |
| 149 | + add $a0,$T1 |
| 150 | + xor $a2,$a1 # sigma1(X[(i+14)&0xf]) |
| 151 | +
|
| 152 | + add `$SZ*($i&0xf)`(%rsp),$T1 |
| 153 | + mov $e,$a0 |
| 154 | + add $a1,$T1 |
| 155 | + mov $a,$a1 |
| 156 | +___ |
| 157 | + &ROUND_00_15(@_); |
| 158 | +} |
| 159 | + |
| 160 | +$code=<<___; |
| 161 | +.text |
| 162 | +
|
| 163 | +.globl $func |
| 164 | +.type $func,\@function,4 |
| 165 | +.align 16 |
| 166 | +$func: |
| 167 | + push %rbx |
| 168 | + push %rbp |
| 169 | + push %r12 |
| 170 | + push %r13 |
| 171 | + push %r14 |
| 172 | + push %r15 |
| 173 | + mov %rsp,%r11 # copy %rsp |
| 174 | + shl \$4,%rdx # num*16 |
| 175 | + sub \$$framesz,%rsp |
| 176 | + lea ($inp,%rdx,$SZ),%rdx # inp+num*16*$SZ |
| 177 | + and \$-64,%rsp # align stack frame |
| 178 | + mov $ctx,$_ctx # save ctx, 1st arg |
| 179 | + mov $inp,$_inp # save inp, 2nd arh |
| 180 | + mov %rdx,$_end # save end pointer, "3rd" arg |
| 181 | + mov %r11,$_rsp # save copy of %rsp |
| 182 | +.Lprologue: |
| 183 | +
|
| 184 | + lea $TABLE(%rip),$Tbl |
| 185 | +
|
| 186 | + mov $SZ*0($ctx),$A |
| 187 | + mov $SZ*1($ctx),$B |
| 188 | + mov $SZ*2($ctx),$C |
| 189 | + mov $SZ*3($ctx),$D |
| 190 | + mov $SZ*4($ctx),$E |
| 191 | + mov $SZ*5($ctx),$F |
| 192 | + mov $SZ*6($ctx),$G |
| 193 | + mov $SZ*7($ctx),$H |
| 194 | + jmp .Lloop |
| 195 | +
|
| 196 | +.align 16 |
| 197 | +.Lloop: |
| 198 | + xor $round,$round |
| 199 | +___ |
| 200 | + for($i=0;$i<16;$i++) { |
| 201 | + $code.=" mov $SZ*$i($inp),$T1\n"; |
| 202 | + $code.=" mov @ROT[4],$a0\n"; |
| 203 | + $code.=" mov @ROT[0],$a1\n"; |
| 204 | + $code.=" bswap $T1\n"; |
| 205 | + &ROUND_00_15($i,@ROT); |
| 206 | + unshift(@ROT,pop(@ROT)); |
| 207 | + } |
| 208 | +$code.=<<___; |
| 209 | + jmp .Lrounds_16_xx |
| 210 | +.align 16 |
| 211 | +.Lrounds_16_xx: |
| 212 | +___ |
| 213 | + for(;$i<32;$i++) { |
| 214 | + &ROUND_16_XX($i,@ROT); |
| 215 | + unshift(@ROT,pop(@ROT)); |
| 216 | + } |
| 217 | + |
| 218 | +$code.=<<___; |
| 219 | + cmp \$$rounds,$round |
| 220 | + jb .Lrounds_16_xx |
| 221 | +
|
| 222 | + mov $_ctx,$ctx |
| 223 | + lea 16*$SZ($inp),$inp |
| 224 | +
|
| 225 | + add $SZ*0($ctx),$A |
| 226 | + add $SZ*1($ctx),$B |
| 227 | + add $SZ*2($ctx),$C |
| 228 | + add $SZ*3($ctx),$D |
| 229 | + add $SZ*4($ctx),$E |
| 230 | + add $SZ*5($ctx),$F |
| 231 | + add $SZ*6($ctx),$G |
| 232 | + add $SZ*7($ctx),$H |
| 233 | +
|
| 234 | + cmp $_end,$inp |
| 235 | +
|
| 236 | + mov $A,$SZ*0($ctx) |
| 237 | + mov $B,$SZ*1($ctx) |
| 238 | + mov $C,$SZ*2($ctx) |
| 239 | + mov $D,$SZ*3($ctx) |
| 240 | + mov $E,$SZ*4($ctx) |
| 241 | + mov $F,$SZ*5($ctx) |
| 242 | + mov $G,$SZ*6($ctx) |
| 243 | + mov $H,$SZ*7($ctx) |
| 244 | + jb .Lloop |
| 245 | +
|
| 246 | + mov $_rsp,%rsi |
| 247 | + mov (%rsi),%r15 |
| 248 | + mov 8(%rsi),%r14 |
| 249 | + mov 16(%rsi),%r13 |
| 250 | + mov 24(%rsi),%r12 |
| 251 | + mov 32(%rsi),%rbp |
| 252 | + mov 40(%rsi),%rbx |
| 253 | + lea 48(%rsi),%rsp |
| 254 | +.Lepilogue: |
| 255 | + ret |
| 256 | +.size $func,.-$func |
| 257 | +___ |
| 258 | + |
| 259 | +if ($SZ==4) { |
| 260 | +$code.=<<___; |
| 261 | +.align 64 |
| 262 | +.type $TABLE,\@object |
| 263 | +$TABLE: |
| 264 | + .long 0x428a2f98,0x71374491,0xb5c0fbcf,0xe9b5dba5 |
| 265 | + .long 0x3956c25b,0x59f111f1,0x923f82a4,0xab1c5ed5 |
| 266 | + .long 0xd807aa98,0x12835b01,0x243185be,0x550c7dc3 |
| 267 | + .long 0x72be5d74,0x80deb1fe,0x9bdc06a7,0xc19bf174 |
| 268 | + .long 0xe49b69c1,0xefbe4786,0x0fc19dc6,0x240ca1cc |
| 269 | + .long 0x2de92c6f,0x4a7484aa,0x5cb0a9dc,0x76f988da |
| 270 | + .long 0x983e5152,0xa831c66d,0xb00327c8,0xbf597fc7 |
| 271 | + .long 0xc6e00bf3,0xd5a79147,0x06ca6351,0x14292967 |
| 272 | + .long 0x27b70a85,0x2e1b2138,0x4d2c6dfc,0x53380d13 |
| 273 | + .long 0x650a7354,0x766a0abb,0x81c2c92e,0x92722c85 |
| 274 | + .long 0xa2bfe8a1,0xa81a664b,0xc24b8b70,0xc76c51a3 |
| 275 | + .long 0xd192e819,0xd6990624,0xf40e3585,0x106aa070 |
| 276 | + .long 0x19a4c116,0x1e376c08,0x2748774c,0x34b0bcb5 |
| 277 | + .long 0x391c0cb3,0x4ed8aa4a,0x5b9cca4f,0x682e6ff3 |
| 278 | + .long 0x748f82ee,0x78a5636f,0x84c87814,0x8cc70208 |
| 279 | + .long 0x90befffa,0xa4506ceb,0xbef9a3f7,0xc67178f2 |
| 280 | +___ |
| 281 | +} else { |
| 282 | +$code.=<<___; |
| 283 | +.align 64 |
| 284 | +.type $TABLE,\@object |
| 285 | +$TABLE: |
| 286 | + .quad 0x428a2f98d728ae22,0x7137449123ef65cd |
| 287 | + .quad 0xb5c0fbcfec4d3b2f,0xe9b5dba58189dbbc |
| 288 | + .quad 0x3956c25bf348b538,0x59f111f1b605d019 |
| 289 | + .quad 0x923f82a4af194f9b,0xab1c5ed5da6d8118 |
| 290 | + .quad 0xd807aa98a3030242,0x12835b0145706fbe |
| 291 | + .quad 0x243185be4ee4b28c,0x550c7dc3d5ffb4e2 |
| 292 | + .quad 0x72be5d74f27b896f,0x80deb1fe3b1696b1 |
| 293 | + .quad 0x9bdc06a725c71235,0xc19bf174cf692694 |
| 294 | + .quad 0xe49b69c19ef14ad2,0xefbe4786384f25e3 |
| 295 | + .quad 0x0fc19dc68b8cd5b5,0x240ca1cc77ac9c65 |
| 296 | + .quad 0x2de92c6f592b0275,0x4a7484aa6ea6e483 |
| 297 | + .quad 0x5cb0a9dcbd41fbd4,0x76f988da831153b5 |
| 298 | + .quad 0x983e5152ee66dfab,0xa831c66d2db43210 |
| 299 | + .quad 0xb00327c898fb213f,0xbf597fc7beef0ee4 |
| 300 | + .quad 0xc6e00bf33da88fc2,0xd5a79147930aa725 |
| 301 | + .quad 0x06ca6351e003826f,0x142929670a0e6e70 |
| 302 | + .quad 0x27b70a8546d22ffc,0x2e1b21385c26c926 |
| 303 | + .quad 0x4d2c6dfc5ac42aed,0x53380d139d95b3df |
| 304 | + .quad 0x650a73548baf63de,0x766a0abb3c77b2a8 |
| 305 | + .quad 0x81c2c92e47edaee6,0x92722c851482353b |
| 306 | + .quad 0xa2bfe8a14cf10364,0xa81a664bbc423001 |
| 307 | + .quad 0xc24b8b70d0f89791,0xc76c51a30654be30 |
| 308 | + .quad 0xd192e819d6ef5218,0xd69906245565a910 |
| 309 | + .quad 0xf40e35855771202a,0x106aa07032bbd1b8 |
| 310 | + .quad 0x19a4c116b8d2d0c8,0x1e376c085141ab53 |
| 311 | + .quad 0x2748774cdf8eeb99,0x34b0bcb5e19b48a8 |
| 312 | + .quad 0x391c0cb3c5c95a63,0x4ed8aa4ae3418acb |
| 313 | + .quad 0x5b9cca4f7763e373,0x682e6ff3d6b2b8a3 |
| 314 | + .quad 0x748f82ee5defb2fc,0x78a5636f43172f60 |
| 315 | + .quad 0x84c87814a1f0ab72,0x8cc702081a6439ec |
| 316 | + .quad 0x90befffa23631e28,0xa4506cebde82bde9 |
| 317 | + .quad 0xbef9a3f7b2c67915,0xc67178f2e372532b |
| 318 | + .quad 0xca273eceea26619c,0xd186b8c721c0c207 |
| 319 | + .quad 0xeada7dd6cde0eb1e,0xf57d4f7fee6ed178 |
| 320 | + .quad 0x06f067aa72176fba,0x0a637dc5a2c898a6 |
| 321 | + .quad 0x113f9804bef90dae,0x1b710b35131c471b |
| 322 | + .quad 0x28db77f523047d84,0x32caab7b40c72493 |
| 323 | + .quad 0x3c9ebe0a15c9bebc,0x431d67c49c100d4c |
| 324 | + .quad 0x4cc5d4becb3e42b6,0x597f299cfc657e2a |
| 325 | + .quad 0x5fcb6fab3ad6faec,0x6c44198c4a475817 |
| 326 | +___ |
| 327 | +} |
| 328 | + |
| 329 | +# EXCEPTION_DISPOSITION handler (EXCEPTION_RECORD *rec,ULONG64 frame, |
| 330 | +# CONTEXT *context,DISPATCHER_CONTEXT *disp) |
| 331 | +if ($win64) { |
| 332 | +$rec="%rcx"; |
| 333 | +$frame="%rdx"; |
| 334 | +$context="%r8"; |
| 335 | +$disp="%r9"; |
| 336 | + |
| 337 | +$code.=<<___; |
| 338 | +.extern __imp_RtlVirtualUnwind |
| 339 | +.type se_handler,\@abi-omnipotent |
| 340 | +.align 16 |
| 341 | +se_handler: |
| 342 | + push %rsi |
| 343 | + push %rdi |
| 344 | + push %rbx |
| 345 | + push %rbp |
| 346 | + push %r12 |
| 347 | + push %r13 |
| 348 | + push %r14 |
| 349 | + push %r15 |
| 350 | + pushfq |
| 351 | + sub \$64,%rsp |
| 352 | +
|
| 353 | + mov 120($context),%rax # pull context->Rax |
| 354 | + mov 248($context),%rbx # pull context->Rip |
| 355 | +
|
| 356 | + lea .Lprologue(%rip),%r10 |
| 357 | + cmp %r10,%rbx # context->Rip<.Lprologue |
| 358 | + jb .Lin_prologue |
| 359 | +
|
| 360 | + mov 152($context),%rax # pull context->Rsp |
| 361 | +
|
| 362 | + lea .Lepilogue(%rip),%r10 |
| 363 | + cmp %r10,%rbx # context->Rip>=.Lepilogue |
| 364 | + jae .Lin_prologue |
| 365 | +
|
| 366 | + mov 16*$SZ+3*8(%rax),%rax # pull $_rsp |
| 367 | + lea 48(%rax),%rax |
| 368 | +
|
| 369 | + mov -8(%rax),%rbx |
| 370 | + mov -16(%rax),%rbp |
| 371 | + mov -24(%rax),%r12 |
| 372 | + mov -32(%rax),%r13 |
| 373 | + mov -40(%rax),%r14 |
| 374 | + mov -48(%rax),%r15 |
| 375 | + mov %rbx,144($context) # restore context->Rbx |
| 376 | + mov %rbp,160($context) # restore context->Rbp |
| 377 | + mov %r12,216($context) # restore context->R12 |
| 378 | + mov %r13,224($context) # restore context->R13 |
| 379 | + mov %r14,232($context) # restore context->R14 |
| 380 | + mov %r15,240($context) # restore context->R15 |
| 381 | +
|
| 382 | +.Lin_prologue: |
| 383 | + mov 8(%rax),%rdi |
| 384 | + mov 16(%rax),%rsi |
| 385 | + mov %rax,152($context) # restore context->Rsp |
| 386 | + mov %rsi,168($context) # restore context->Rsi |
| 387 | + mov %rdi,176($context) # restore context->Rdi |
| 388 | +
|
| 389 | + mov 40($disp),%rdi # disp->ContextRecord |
| 390 | + mov $context,%rsi # context |
| 391 | + mov \$154,%ecx # sizeof(CONTEXT) |
| 392 | + .long 0xa548f3fc # cld; rep movsq |
| 393 | +
|
| 394 | + mov $disp,%rsi |
| 395 | + xor %rcx,%rcx # arg1, UNW_FLAG_NHANDLER |
| 396 | + mov 8(%rsi),%rdx # arg2, disp->ImageBase |
| 397 | + mov 0(%rsi),%r8 # arg3, disp->ControlPc |
| 398 | + mov 16(%rsi),%r9 # arg4, disp->FunctionEntry |
| 399 | + mov 40(%rsi),%r10 # disp->ContextRecord |
| 400 | + lea 56(%rsi),%r11 # &disp->HandlerData |
| 401 | + lea 24(%rsi),%r12 # &disp->EstablisherFrame |
| 402 | + mov %r10,32(%rsp) # arg5 |
| 403 | + mov %r11,40(%rsp) # arg6 |
| 404 | + mov %r12,48(%rsp) # arg7 |
| 405 | + mov %rcx,56(%rsp) # arg8, (NULL) |
| 406 | + call *__imp_RtlVirtualUnwind(%rip) |
| 407 | +
|
| 408 | + mov \$1,%eax # ExceptionContinueSearch |
| 409 | + add \$64,%rsp |
| 410 | + popfq |
| 411 | + pop %r15 |
| 412 | + pop %r14 |
| 413 | + pop %r13 |
| 414 | + pop %r12 |
| 415 | + pop %rbp |
| 416 | + pop %rbx |
| 417 | + pop %rdi |
| 418 | + pop %rsi |
| 419 | + ret |
| 420 | +.size se_handler,.-se_handler |
| 421 | +
|
| 422 | +.section .pdata |
| 423 | +.align 4 |
| 424 | + .rva .LSEH_begin_$func |
| 425 | + .rva .LSEH_end_$func |
| 426 | + .rva .LSEH_info_$func |
| 427 | +
|
| 428 | +.section .xdata |
| 429 | +.align 8 |
| 430 | +.LSEH_info_$func: |
| 431 | + .byte 9,0,0,0 |
| 432 | + .rva se_handler |
| 433 | +___ |
| 434 | +} |
| 435 | + |
| 436 | +$code =~ s/\`([^\`]*)\`/eval $1/gem; |
| 437 | +print $code; |
| 438 | +close STDOUT; |
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