summaryrefslogtreecommitdiff
path: root/openssl/crypto/sha/asm/sha256-586.pl
diff options
context:
space:
mode:
Diffstat (limited to 'openssl/crypto/sha/asm/sha256-586.pl')
-rw-r--r--openssl/crypto/sha/asm/sha256-586.pl251
1 files changed, 251 insertions, 0 deletions
diff --git a/openssl/crypto/sha/asm/sha256-586.pl b/openssl/crypto/sha/asm/sha256-586.pl
new file mode 100644
index 00000000..ecc8b69c
--- /dev/null
+++ b/openssl/crypto/sha/asm/sha256-586.pl
@@ -0,0 +1,251 @@
+#!/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 35 20 20
+# x86_64 asm(*) - - 21 15.8 16.5
+#
+# (*) 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 µ-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 ($T,&DWP(4*(8+15+16-9),"esp")) if ($in_16_63); # T += X[-7]
+ &ror ("ecx",6);
+ &mov ("edi",$E);
+ &ror ("edi",11);
+ &mov ("esi",$Foff);
+ &xor ("ecx","edi");
+ &ror ("edi",25-11);
+ &mov (&DWP(4*(8+15),"esp"),$T) if ($in_16_63); # save X[0]
+ &xor ("ecx","edi"); # Sigma1(e)
+ &mov ("edi",$Goff);
+ &add ($T,"ecx"); # T += Sigma1(e)
+ &mov ($Eoff,$E); # modulo-scheduled
+
+ &xor ("esi","edi");
+ &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",2);
+ &add ($T,$Hoff); # T += h
+ &ror ("edi",13);
+ &mov ("esi",$Boff);
+ &xor ("ecx","edi");
+ &ror ("edi",22-13);
+ &add ($E,$T); # d += T
+ &xor ("ecx","edi"); # Sigma0(a)
+ &mov ("edi",$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"));
+ &shr ($T,3);
+ &ror ("esi",7);
+ &xor ($T,"esi");
+ &ror ("esi",18-7);
+ &mov ("edi","ecx");
+ &xor ($T,"esi"); # T = sigma0(X[-15])
+
+ &shr ("ecx",10);
+ &mov ("esi",&DWP(4*(8+15+16),"esp"));
+ &ror ("edi",17);
+ &xor ("ecx","edi");
+ &ror ("edi",19-17);
+ &add ($T,"esi"); # T += X[-16]
+ &xor ("edi","ecx") # sigma1(X[-2])
+
+ &add ($T,"edi"); # T += sigma1(X[-2])
+ # &add ($T,&DWP(4*(8+15+16-9),"esp")); # T += X[-7], moved to BODY_00_15(1)
+ # &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();