| #!/usr/bin/env perl |
| # |
| # ==================================================================== |
| # Written by Andy Polyakov <appro@fy.chalmers.se> for the OpenSSL |
| # project. The module is, however, dual licensed under OpenSSL and |
| # CRYPTOGAMS licenses depending on where you obtain it. For further |
| # details see http://www.openssl.org/~appro/cryptogams/. |
| # ==================================================================== |
| # |
| # SHA256 block transform for x86. September 2007. |
| # |
| # Performance in clock cycles per processed byte (less is better): |
| # |
| # Pentium PIII P4 AMD K8 Core2 |
| # gcc 46 36 41 27 26 |
| # icc 57 33 38 25 23 |
| # x86 asm 40 30 33 20 18 |
| # x86_64 asm(*) - - 21 16 16 |
| # |
| # (*) x86_64 assembler performance is presented for reference |
| # purposes. |
| # |
| # Performance improvement over compiler generated code varies from |
| # 10% to 40% [see above]. Not very impressive on some ยต-archs, but |
| # it's 5 times smaller and optimizies amount of writes. |
| |
| $0 =~ m/(.*[\/\\])[^\/\\]+$/; $dir=$1; |
| push(@INC,"${dir}","${dir}../../perlasm"); |
| require "x86asm.pl"; |
| |
| &asm_init($ARGV[0],"sha512-586.pl",$ARGV[$#ARGV] eq "386"); |
| |
| $A="eax"; |
| $E="edx"; |
| $T="ebx"; |
| $Aoff=&DWP(0,"esp"); |
| $Boff=&DWP(4,"esp"); |
| $Coff=&DWP(8,"esp"); |
| $Doff=&DWP(12,"esp"); |
| $Eoff=&DWP(16,"esp"); |
| $Foff=&DWP(20,"esp"); |
| $Goff=&DWP(24,"esp"); |
| $Hoff=&DWP(28,"esp"); |
| $Xoff=&DWP(32,"esp"); |
| $K256="ebp"; |
| |
| sub BODY_00_15() { |
| my $in_16_63=shift; |
| |
| &mov ("ecx",$E); |
| &add ($T,"edi") if ($in_16_63); # T += sigma1(X[-2]) |
| &ror ("ecx",25-11); |
| &mov ("esi",$Foff); |
| &xor ("ecx",$E); |
| &ror ("ecx",11-6); |
| &mov (&DWP(4*(8+15),"esp"),$T) if ($in_16_63); # save X[0] |
| &xor ("ecx",$E); |
| &ror ("ecx",6); # Sigma1(e) |
| &mov ("edi",$Goff); |
| &add ($T,"ecx"); # T += Sigma1(e) |
| |
| &xor ("esi","edi"); |
| &mov ($Eoff,$E); # modulo-scheduled |
| &mov ("ecx",$A); |
| &and ("esi",$E); |
| &mov ($E,$Doff); # e becomes d, which is e in next iteration |
| &xor ("esi","edi"); # Ch(e,f,g) |
| &mov ("edi",$A); |
| &add ($T,"esi"); # T += Ch(e,f,g) |
| |
| &ror ("ecx",22-13); |
| &add ($T,$Hoff); # T += h |
| &xor ("ecx",$A); |
| &ror ("ecx",13-2); |
| &mov ("esi",$Boff); |
| &xor ("ecx",$A); |
| &ror ("ecx",2); # Sigma0(a) |
| &add ($E,$T); # d += T |
| &mov ("edi",$Coff); |
| |
| &add ($T,"ecx"); # T += Sigma0(a) |
| &mov ($Aoff,$A); # modulo-scheduled |
| |
| &mov ("ecx",$A); |
| &sub ("esp",4); |
| &or ($A,"esi"); # a becomes h, which is a in next iteration |
| &and ("ecx","esi"); |
| &and ($A,"edi"); |
| &mov ("esi",&DWP(0,$K256)); |
| &or ($A,"ecx"); # h=Maj(a,b,c) |
| |
| &add ($K256,4); |
| &add ($A,$T); # h += T |
| &mov ($T,&DWP(4*(8+15+16-1),"esp")) if ($in_16_63); # preload T |
| &add ($E,"esi"); # d += K256[i] |
| &add ($A,"esi"); # h += K256[i] |
| } |
| |
| &function_begin("sha256_block_data_order"); |
| &mov ("esi",wparam(0)); # ctx |
| &mov ("edi",wparam(1)); # inp |
| &mov ("eax",wparam(2)); # num |
| &mov ("ebx","esp"); # saved sp |
| |
| &call (&label("pic_point")); # make it PIC! |
| &set_label("pic_point"); |
| &blindpop($K256); |
| &lea ($K256,&DWP(&label("K256")."-".&label("pic_point"),$K256)); |
| |
| &sub ("esp",16); |
| &and ("esp",-64); |
| |
| &shl ("eax",6); |
| &add ("eax","edi"); |
| &mov (&DWP(0,"esp"),"esi"); # ctx |
| &mov (&DWP(4,"esp"),"edi"); # inp |
| &mov (&DWP(8,"esp"),"eax"); # inp+num*128 |
| &mov (&DWP(12,"esp"),"ebx"); # saved sp |
| |
| &set_label("loop",16); |
| # copy input block to stack reversing byte and dword order |
| for($i=0;$i<4;$i++) { |
| &mov ("eax",&DWP($i*16+0,"edi")); |
| &mov ("ebx",&DWP($i*16+4,"edi")); |
| &mov ("ecx",&DWP($i*16+8,"edi")); |
| &mov ("edx",&DWP($i*16+12,"edi")); |
| &bswap ("eax"); |
| &bswap ("ebx"); |
| &bswap ("ecx"); |
| &bswap ("edx"); |
| &push ("eax"); |
| &push ("ebx"); |
| &push ("ecx"); |
| &push ("edx"); |
| } |
| &add ("edi",64); |
| &sub ("esp",4*8); # place for A,B,C,D,E,F,G,H |
| &mov (&DWP(4*(8+16)+4,"esp"),"edi"); |
| |
| # copy ctx->h[0-7] to A,B,C,D,E,F,G,H on stack |
| &mov ($A,&DWP(0,"esi")); |
| &mov ("ebx",&DWP(4,"esi")); |
| &mov ("ecx",&DWP(8,"esi")); |
| &mov ("edi",&DWP(12,"esi")); |
| # &mov ($Aoff,$A); |
| &mov ($Boff,"ebx"); |
| &mov ($Coff,"ecx"); |
| &mov ($Doff,"edi"); |
| &mov ($E,&DWP(16,"esi")); |
| &mov ("ebx",&DWP(20,"esi")); |
| &mov ("ecx",&DWP(24,"esi")); |
| &mov ("edi",&DWP(28,"esi")); |
| # &mov ($Eoff,$E); |
| &mov ($Foff,"ebx"); |
| &mov ($Goff,"ecx"); |
| &mov ($Hoff,"edi"); |
| |
| &set_label("00_15",16); |
| &mov ($T,&DWP(4*(8+15),"esp")); |
| |
| &BODY_00_15(); |
| |
| &cmp ("esi",0xc19bf174); |
| &jne (&label("00_15")); |
| |
| &mov ($T,&DWP(4*(8+15+16-1),"esp")); # preloaded in BODY_00_15(1) |
| &set_label("16_63",16); |
| &mov ("esi",$T); |
| &mov ("ecx",&DWP(4*(8+15+16-14),"esp")); |
| &ror ("esi",18-7); |
| &mov ("edi","ecx"); |
| &xor ("esi",$T); |
| &ror ("esi",7); |
| &shr ($T,3); |
| |
| &ror ("edi",19-17); |
| &xor ($T,"esi"); # T = sigma0(X[-15]) |
| &xor ("edi","ecx"); |
| &ror ("edi",17); |
| &shr ("ecx",10); |
| &add ($T,&DWP(4*(8+15+16),"esp")); # T += X[-16] |
| &xor ("edi","ecx"); # sigma1(X[-2]) |
| |
| &add ($T,&DWP(4*(8+15+16-9),"esp")); # T += X[-7] |
| # &add ($T,"edi"); # T += sigma1(X[-2]) |
| # &mov (&DWP(4*(8+15),"esp"),$T); # save X[0] |
| |
| &BODY_00_15(1); |
| |
| &cmp ("esi",0xc67178f2); |
| &jne (&label("16_63")); |
| |
| &mov ("esi",&DWP(4*(8+16+64)+0,"esp"));#ctx |
| # &mov ($A,$Aoff); |
| &mov ("ebx",$Boff); |
| &mov ("ecx",$Coff); |
| &mov ("edi",$Doff); |
| &add ($A,&DWP(0,"esi")); |
| &add ("ebx",&DWP(4,"esi")); |
| &add ("ecx",&DWP(8,"esi")); |
| &add ("edi",&DWP(12,"esi")); |
| &mov (&DWP(0,"esi"),$A); |
| &mov (&DWP(4,"esi"),"ebx"); |
| &mov (&DWP(8,"esi"),"ecx"); |
| &mov (&DWP(12,"esi"),"edi"); |
| # &mov ($E,$Eoff); |
| &mov ("eax",$Foff); |
| &mov ("ebx",$Goff); |
| &mov ("ecx",$Hoff); |
| &mov ("edi",&DWP(4*(8+16+64)+4,"esp"));#inp |
| &add ($E,&DWP(16,"esi")); |
| &add ("eax",&DWP(20,"esi")); |
| &add ("ebx",&DWP(24,"esi")); |
| &add ("ecx",&DWP(28,"esi")); |
| &mov (&DWP(16,"esi"),$E); |
| &mov (&DWP(20,"esi"),"eax"); |
| &mov (&DWP(24,"esi"),"ebx"); |
| &mov (&DWP(28,"esi"),"ecx"); |
| |
| &add ("esp",4*(8+16+64)); # destroy frame |
| &sub ($K256,4*64); # rewind K |
| |
| &cmp ("edi",&DWP(8,"esp")); # are we done yet? |
| &jb (&label("loop")); |
| |
| &mov ("esp",&DWP(12,"esp")); # restore sp |
| &function_end_A(); |
| |
| &set_label("K256",64); # Yes! I keep it in the code segment! |
| &data_word(0x428a2f98,0x71374491,0xb5c0fbcf,0xe9b5dba5); |
| &data_word(0x3956c25b,0x59f111f1,0x923f82a4,0xab1c5ed5); |
| &data_word(0xd807aa98,0x12835b01,0x243185be,0x550c7dc3); |
| &data_word(0x72be5d74,0x80deb1fe,0x9bdc06a7,0xc19bf174); |
| &data_word(0xe49b69c1,0xefbe4786,0x0fc19dc6,0x240ca1cc); |
| &data_word(0x2de92c6f,0x4a7484aa,0x5cb0a9dc,0x76f988da); |
| &data_word(0x983e5152,0xa831c66d,0xb00327c8,0xbf597fc7); |
| &data_word(0xc6e00bf3,0xd5a79147,0x06ca6351,0x14292967); |
| &data_word(0x27b70a85,0x2e1b2138,0x4d2c6dfc,0x53380d13); |
| &data_word(0x650a7354,0x766a0abb,0x81c2c92e,0x92722c85); |
| &data_word(0xa2bfe8a1,0xa81a664b,0xc24b8b70,0xc76c51a3); |
| &data_word(0xd192e819,0xd6990624,0xf40e3585,0x106aa070); |
| &data_word(0x19a4c116,0x1e376c08,0x2748774c,0x34b0bcb5); |
| &data_word(0x391c0cb3,0x4ed8aa4a,0x5b9cca4f,0x682e6ff3); |
| &data_word(0x748f82ee,0x78a5636f,0x84c87814,0x8cc70208); |
| &data_word(0x90befffa,0xa4506ceb,0xbef9a3f7,0xc67178f2); |
| &function_end_B("sha256_block_data_order"); |
| &asciz("SHA256 block transform for x86, CRYPTOGAMS by <appro\@openssl.org>"); |
| |
| &asm_finish(); |
