diff options
author | Parménides GV <parmegv@sdf.org> | 2014-04-07 20:43:34 +0200 |
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committer | Parménides GV <parmegv@sdf.org> | 2014-04-08 11:43:27 +0200 |
commit | c206a91d320995f37f8abb33188bfd384249da3d (patch) | |
tree | 10a7d8a9dd7f24437ac4851b8d01edbd5dd3ee3b /openssl/crypto/rc4/asm/rc4-586.pl | |
parent | 910b0e1746ab3f63e63808b198ad51fec5b635e5 (diff) |
Next step: compile jni sources correctly.
Diffstat (limited to 'openssl/crypto/rc4/asm/rc4-586.pl')
-rw-r--r-- | openssl/crypto/rc4/asm/rc4-586.pl | 270 |
1 files changed, 0 insertions, 270 deletions
diff --git a/openssl/crypto/rc4/asm/rc4-586.pl b/openssl/crypto/rc4/asm/rc4-586.pl deleted file mode 100644 index 38a44a70..00000000 --- a/openssl/crypto/rc4/asm/rc4-586.pl +++ /dev/null @@ -1,270 +0,0 @@ -#!/usr/bin/env perl - -# ==================================================================== -# [Re]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/. -# ==================================================================== - -# At some point it became apparent that the original SSLeay RC4 -# assembler implementation performs suboptimally on latest IA-32 -# microarchitectures. After re-tuning performance has changed as -# following: -# -# Pentium -10% -# Pentium III +12% -# AMD +50%(*) -# P4 +250%(**) -# -# (*) This number is actually a trade-off:-) It's possible to -# achieve +72%, but at the cost of -48% off PIII performance. -# In other words code performing further 13% faster on AMD -# would perform almost 2 times slower on Intel PIII... -# For reference! This code delivers ~80% of rc4-amd64.pl -# performance on the same Opteron machine. -# (**) This number requires compressed key schedule set up by -# RC4_set_key [see commentary below for further details]. -# -# <appro@fy.chalmers.se> - -$0 =~ m/(.*[\/\\])[^\/\\]+$/; $dir=$1; -push(@INC,"${dir}","${dir}../../perlasm"); -require "x86asm.pl"; - -&asm_init($ARGV[0],"rc4-586.pl"); - -$xx="eax"; -$yy="ebx"; -$tx="ecx"; -$ty="edx"; -$inp="esi"; -$out="ebp"; -$dat="edi"; - -sub RC4_loop { - my $i=shift; - my $func = ($i==0)?*mov:*or; - - &add (&LB($yy),&LB($tx)); - &mov ($ty,&DWP(0,$dat,$yy,4)); - &mov (&DWP(0,$dat,$yy,4),$tx); - &mov (&DWP(0,$dat,$xx,4),$ty); - &add ($ty,$tx); - &inc (&LB($xx)); - &and ($ty,0xff); - &ror ($out,8) if ($i!=0); - if ($i<3) { - &mov ($tx,&DWP(0,$dat,$xx,4)); - } else { - &mov ($tx,&wparam(3)); # reload [re-biased] out - } - &$func ($out,&DWP(0,$dat,$ty,4)); -} - -# void RC4(RC4_KEY *key,size_t len,const unsigned char *inp,unsigned char *out); -&function_begin("RC4"); - &mov ($dat,&wparam(0)); # load key schedule pointer - &mov ($ty, &wparam(1)); # load len - &mov ($inp,&wparam(2)); # load inp - &mov ($out,&wparam(3)); # load out - - &xor ($xx,$xx); # avoid partial register stalls - &xor ($yy,$yy); - - &cmp ($ty,0); # safety net - &je (&label("abort")); - - &mov (&LB($xx),&BP(0,$dat)); # load key->x - &mov (&LB($yy),&BP(4,$dat)); # load key->y - &add ($dat,8); - - &lea ($tx,&DWP(0,$inp,$ty)); - &sub ($out,$inp); # re-bias out - &mov (&wparam(1),$tx); # save input+len - - &inc (&LB($xx)); - - # detect compressed key schedule... - &cmp (&DWP(256,$dat),-1); - &je (&label("RC4_CHAR")); - - &mov ($tx,&DWP(0,$dat,$xx,4)); - - &and ($ty,-4); # how many 4-byte chunks? - &jz (&label("loop1")); - - &lea ($ty,&DWP(-4,$inp,$ty)); - &mov (&wparam(2),$ty); # save input+(len/4)*4-4 - &mov (&wparam(3),$out); # $out as accumulator in this loop - - &set_label("loop4",16); - for ($i=0;$i<4;$i++) { RC4_loop($i); } - &ror ($out,8); - &xor ($out,&DWP(0,$inp)); - &cmp ($inp,&wparam(2)); # compare to input+(len/4)*4-4 - &mov (&DWP(0,$tx,$inp),$out);# $tx holds re-biased out here - &lea ($inp,&DWP(4,$inp)); - &mov ($tx,&DWP(0,$dat,$xx,4)); - &jb (&label("loop4")); - - &cmp ($inp,&wparam(1)); # compare to input+len - &je (&label("done")); - &mov ($out,&wparam(3)); # restore $out - - &set_label("loop1",16); - &add (&LB($yy),&LB($tx)); - &mov ($ty,&DWP(0,$dat,$yy,4)); - &mov (&DWP(0,$dat,$yy,4),$tx); - &mov (&DWP(0,$dat,$xx,4),$ty); - &add ($ty,$tx); - &inc (&LB($xx)); - &and ($ty,0xff); - &mov ($ty,&DWP(0,$dat,$ty,4)); - &xor (&LB($ty),&BP(0,$inp)); - &lea ($inp,&DWP(1,$inp)); - &mov ($tx,&DWP(0,$dat,$xx,4)); - &cmp ($inp,&wparam(1)); # compare to input+len - &mov (&BP(-1,$out,$inp),&LB($ty)); - &jb (&label("loop1")); - - &jmp (&label("done")); - -# this is essentially Intel P4 specific codepath... -&set_label("RC4_CHAR",16); - &movz ($tx,&BP(0,$dat,$xx)); - # strangely enough unrolled loop performs over 20% slower... - &set_label("cloop1"); - &add (&LB($yy),&LB($tx)); - &movz ($ty,&BP(0,$dat,$yy)); - &mov (&BP(0,$dat,$yy),&LB($tx)); - &mov (&BP(0,$dat,$xx),&LB($ty)); - &add (&LB($ty),&LB($tx)); - &movz ($ty,&BP(0,$dat,$ty)); - &add (&LB($xx),1); - &xor (&LB($ty),&BP(0,$inp)); - &lea ($inp,&DWP(1,$inp)); - &movz ($tx,&BP(0,$dat,$xx)); - &cmp ($inp,&wparam(1)); - &mov (&BP(-1,$out,$inp),&LB($ty)); - &jb (&label("cloop1")); - -&set_label("done"); - &dec (&LB($xx)); - &mov (&BP(-4,$dat),&LB($yy)); # save key->y - &mov (&BP(-8,$dat),&LB($xx)); # save key->x -&set_label("abort"); -&function_end("RC4"); - -######################################################################## - -$inp="esi"; -$out="edi"; -$idi="ebp"; -$ido="ecx"; -$idx="edx"; - -&external_label("OPENSSL_ia32cap_P"); - -# void RC4_set_key(RC4_KEY *key,int len,const unsigned char *data); -&function_begin("RC4_set_key"); - &mov ($out,&wparam(0)); # load key - &mov ($idi,&wparam(1)); # load len - &mov ($inp,&wparam(2)); # load data - &picmeup($idx,"OPENSSL_ia32cap_P"); - - &lea ($out,&DWP(2*4,$out)); # &key->data - &lea ($inp,&DWP(0,$inp,$idi)); # $inp to point at the end - &neg ($idi); - &xor ("eax","eax"); - &mov (&DWP(-4,$out),$idi); # borrow key->y - - &bt (&DWP(0,$idx),20); # check for bit#20 - &jc (&label("c1stloop")); - -&set_label("w1stloop",16); - &mov (&DWP(0,$out,"eax",4),"eax"); # key->data[i]=i; - &add (&LB("eax"),1); # i++; - &jnc (&label("w1stloop")); - - &xor ($ido,$ido); - &xor ($idx,$idx); - -&set_label("w2ndloop",16); - &mov ("eax",&DWP(0,$out,$ido,4)); - &add (&LB($idx),&BP(0,$inp,$idi)); - &add (&LB($idx),&LB("eax")); - &add ($idi,1); - &mov ("ebx",&DWP(0,$out,$idx,4)); - &jnz (&label("wnowrap")); - &mov ($idi,&DWP(-4,$out)); - &set_label("wnowrap"); - &mov (&DWP(0,$out,$idx,4),"eax"); - &mov (&DWP(0,$out,$ido,4),"ebx"); - &add (&LB($ido),1); - &jnc (&label("w2ndloop")); -&jmp (&label("exit")); - -# Unlike all other x86 [and x86_64] implementations, Intel P4 core -# [including EM64T] was found to perform poorly with above "32-bit" key -# schedule, a.k.a. RC4_INT. Performance improvement for IA-32 hand-coded -# assembler turned out to be 3.5x if re-coded for compressed 8-bit one, -# a.k.a. RC4_CHAR! It's however inappropriate to just switch to 8-bit -# schedule for x86[_64], because non-P4 implementations suffer from -# significant performance losses then, e.g. PIII exhibits >2x -# deterioration, and so does Opteron. In order to assure optimal -# all-round performance, we detect P4 at run-time and set up compressed -# key schedule, which is recognized by RC4 procedure. - -&set_label("c1stloop",16); - &mov (&BP(0,$out,"eax"),&LB("eax")); # key->data[i]=i; - &add (&LB("eax"),1); # i++; - &jnc (&label("c1stloop")); - - &xor ($ido,$ido); - &xor ($idx,$idx); - &xor ("ebx","ebx"); - -&set_label("c2ndloop",16); - &mov (&LB("eax"),&BP(0,$out,$ido)); - &add (&LB($idx),&BP(0,$inp,$idi)); - &add (&LB($idx),&LB("eax")); - &add ($idi,1); - &mov (&LB("ebx"),&BP(0,$out,$idx)); - &jnz (&label("cnowrap")); - &mov ($idi,&DWP(-4,$out)); - &set_label("cnowrap"); - &mov (&BP(0,$out,$idx),&LB("eax")); - &mov (&BP(0,$out,$ido),&LB("ebx")); - &add (&LB($ido),1); - &jnc (&label("c2ndloop")); - - &mov (&DWP(256,$out),-1); # mark schedule as compressed - -&set_label("exit"); - &xor ("eax","eax"); - &mov (&DWP(-8,$out),"eax"); # key->x=0; - &mov (&DWP(-4,$out),"eax"); # key->y=0; -&function_end("RC4_set_key"); - -# const char *RC4_options(void); -&function_begin_B("RC4_options"); - &call (&label("pic_point")); -&set_label("pic_point"); - &blindpop("eax"); - &lea ("eax",&DWP(&label("opts")."-".&label("pic_point"),"eax")); - &picmeup("edx","OPENSSL_ia32cap_P"); - &bt (&DWP(0,"edx"),20); - &jnc (&label("skip")); - &add ("eax",12); - &set_label("skip"); - &ret (); -&set_label("opts",64); -&asciz ("rc4(4x,int)"); -&asciz ("rc4(1x,char)"); -&asciz ("RC4 for x86, CRYPTOGAMS by <appro\@openssl.org>"); -&align (64); -&function_end_B("RC4_options"); - -&asm_finish(); - |