diff options
Diffstat (limited to 'drivers/builtin_openssl/crypto/bn/asm/via-mont.pl')
| -rw-r--r-- | drivers/builtin_openssl/crypto/bn/asm/via-mont.pl | 242 |
1 files changed, 0 insertions, 242 deletions
diff --git a/drivers/builtin_openssl/crypto/bn/asm/via-mont.pl b/drivers/builtin_openssl/crypto/bn/asm/via-mont.pl deleted file mode 100644 index c046a514c8..0000000000 --- a/drivers/builtin_openssl/crypto/bn/asm/via-mont.pl +++ /dev/null @@ -1,242 +0,0 @@ -#!/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/. -# ==================================================================== -# -# Wrapper around 'rep montmul', VIA-specific instruction accessing -# PadLock Montgomery Multiplier. The wrapper is designed as drop-in -# replacement for OpenSSL bn_mul_mont [first implemented in 0.9.9]. -# -# Below are interleaved outputs from 'openssl speed rsa dsa' for 4 -# different software configurations on 1.5GHz VIA Esther processor. -# Lines marked with "software integer" denote performance of hand- -# coded integer-only assembler found in OpenSSL 0.9.7. "Software SSE2" -# refers to hand-coded SSE2 Montgomery multiplication procedure found -# OpenSSL 0.9.9. "Hardware VIA SDK" refers to padlock_pmm routine from -# Padlock SDK 2.0.1 available for download from VIA, which naturally -# utilizes the magic 'repz montmul' instruction. And finally "hardware -# this" refers to *this* implementation which also uses 'repz montmul' -# -# sign verify sign/s verify/s -# rsa 512 bits 0.001720s 0.000140s 581.4 7149.7 software integer -# rsa 512 bits 0.000690s 0.000086s 1450.3 11606.0 software SSE2 -# rsa 512 bits 0.006136s 0.000201s 163.0 4974.5 hardware VIA SDK -# rsa 512 bits 0.000712s 0.000050s 1404.9 19858.5 hardware this -# -# rsa 1024 bits 0.008518s 0.000413s 117.4 2420.8 software integer -# rsa 1024 bits 0.004275s 0.000277s 233.9 3609.7 software SSE2 -# rsa 1024 bits 0.012136s 0.000260s 82.4 3844.5 hardware VIA SDK -# rsa 1024 bits 0.002522s 0.000116s 396.5 8650.9 hardware this -# -# rsa 2048 bits 0.050101s 0.001371s 20.0 729.6 software integer -# rsa 2048 bits 0.030273s 0.001008s 33.0 991.9 software SSE2 -# rsa 2048 bits 0.030833s 0.000976s 32.4 1025.1 hardware VIA SDK -# rsa 2048 bits 0.011879s 0.000342s 84.2 2921.7 hardware this -# -# rsa 4096 bits 0.327097s 0.004859s 3.1 205.8 software integer -# rsa 4096 bits 0.229318s 0.003859s 4.4 259.2 software SSE2 -# rsa 4096 bits 0.233953s 0.003274s 4.3 305.4 hardware VIA SDK -# rsa 4096 bits 0.070493s 0.001166s 14.2 857.6 hardware this -# -# dsa 512 bits 0.001342s 0.001651s 745.2 605.7 software integer -# dsa 512 bits 0.000844s 0.000987s 1185.3 1013.1 software SSE2 -# dsa 512 bits 0.001902s 0.002247s 525.6 444.9 hardware VIA SDK -# dsa 512 bits 0.000458s 0.000524s 2182.2 1909.1 hardware this -# -# dsa 1024 bits 0.003964s 0.004926s 252.3 203.0 software integer -# dsa 1024 bits 0.002686s 0.003166s 372.3 315.8 software SSE2 -# dsa 1024 bits 0.002397s 0.002823s 417.1 354.3 hardware VIA SDK -# dsa 1024 bits 0.000978s 0.001170s 1022.2 855.0 hardware this -# -# dsa 2048 bits 0.013280s 0.016518s 75.3 60.5 software integer -# dsa 2048 bits 0.009911s 0.011522s 100.9 86.8 software SSE2 -# dsa 2048 bits 0.009542s 0.011763s 104.8 85.0 hardware VIA SDK -# dsa 2048 bits 0.002884s 0.003352s 346.8 298.3 hardware this -# -# To give you some other reference point here is output for 2.4GHz P4 -# running hand-coded SSE2 bn_mul_mont found in 0.9.9, i.e. "software -# SSE2" in above terms. -# -# rsa 512 bits 0.000407s 0.000047s 2454.2 21137.0 -# rsa 1024 bits 0.002426s 0.000141s 412.1 7100.0 -# rsa 2048 bits 0.015046s 0.000491s 66.5 2034.9 -# rsa 4096 bits 0.109770s 0.002379s 9.1 420.3 -# dsa 512 bits 0.000438s 0.000525s 2281.1 1904.1 -# dsa 1024 bits 0.001346s 0.001595s 742.7 627.0 -# dsa 2048 bits 0.004745s 0.005582s 210.7 179.1 -# -# Conclusions: -# - VIA SDK leaves a *lot* of room for improvement (which this -# implementation successfully fills:-); -# - 'rep montmul' gives up to >3x performance improvement depending on -# key length; -# - in terms of absolute performance it delivers approximately as much -# as modern out-of-order 32-bit cores [again, for longer keys]. - -$0 =~ m/(.*[\/\\])[^\/\\]+$/; $dir=$1; -push(@INC,"${dir}","${dir}../../perlasm"); -require "x86asm.pl"; - -&asm_init($ARGV[0],"via-mont.pl"); - -# int bn_mul_mont(BN_ULONG *rp, const BN_ULONG *ap, const BN_ULONG *bp, const BN_ULONG *np,const BN_ULONG *n0, int num); -$func="bn_mul_mont_padlock"; - -$pad=16*1; # amount of reserved bytes on top of every vector - -# stack layout -$mZeroPrime=&DWP(0,"esp"); # these are specified by VIA -$A=&DWP(4,"esp"); -$B=&DWP(8,"esp"); -$T=&DWP(12,"esp"); -$M=&DWP(16,"esp"); -$scratch=&DWP(20,"esp"); -$rp=&DWP(24,"esp"); # these are mine -$sp=&DWP(28,"esp"); -# &DWP(32,"esp") # 32 byte scratch area -# &DWP(64+(4*$num+$pad)*0,"esp") # padded tp[num] -# &DWP(64+(4*$num+$pad)*1,"esp") # padded copy of ap[num] -# &DWP(64+(4*$num+$pad)*2,"esp") # padded copy of bp[num] -# &DWP(64+(4*$num+$pad)*3,"esp") # padded copy of np[num] -# Note that SDK suggests to unconditionally allocate 2K per vector. This -# has quite an impact on performance. It naturally depends on key length, -# but to give an example 1024 bit private RSA key operations suffer >30% -# penalty. I allocate only as much as actually required... - -&function_begin($func); - &xor ("eax","eax"); - &mov ("ecx",&wparam(5)); # num - # meet VIA's limitations for num [note that the specification - # expresses them in bits, while we work with amount of 32-bit words] - &test ("ecx",3); - &jnz (&label("leave")); # num % 4 != 0 - &cmp ("ecx",8); - &jb (&label("leave")); # num < 8 - &cmp ("ecx",1024); - &ja (&label("leave")); # num > 1024 - - &pushf (); - &cld (); - - &mov ("edi",&wparam(0)); # rp - &mov ("eax",&wparam(1)); # ap - &mov ("ebx",&wparam(2)); # bp - &mov ("edx",&wparam(3)); # np - &mov ("esi",&wparam(4)); # n0 - &mov ("esi",&DWP(0,"esi")); # *n0 - - &lea ("ecx",&DWP($pad,"","ecx",4)); # ecx becomes vector size in bytes - &lea ("ebp",&DWP(64,"","ecx",4)); # allocate 4 vectors + 64 bytes - &neg ("ebp"); - &add ("ebp","esp"); - &and ("ebp",-64); # align to cache-line - &xchg ("ebp","esp"); # alloca - - &mov ($rp,"edi"); # save rp - &mov ($sp,"ebp"); # save esp - - &mov ($mZeroPrime,"esi"); - &lea ("esi",&DWP(64,"esp")); # tp - &mov ($T,"esi"); - &lea ("edi",&DWP(32,"esp")); # scratch area - &mov ($scratch,"edi"); - &mov ("esi","eax"); - - &lea ("ebp",&DWP(-$pad,"ecx")); - &shr ("ebp",2); # restore original num value in ebp - - &xor ("eax","eax"); - - &mov ("ecx","ebp"); - &lea ("ecx",&DWP((32+$pad)/4,"ecx"));# padded tp + scratch - &data_byte(0xf3,0xab); # rep stosl, bzero - - &mov ("ecx","ebp"); - &lea ("edi",&DWP(64+$pad,"esp","ecx",4));# pointer to ap copy - &mov ($A,"edi"); - &data_byte(0xf3,0xa5); # rep movsl, memcpy - &mov ("ecx",$pad/4); - &data_byte(0xf3,0xab); # rep stosl, bzero pad - # edi points at the end of padded ap copy... - - &mov ("ecx","ebp"); - &mov ("esi","ebx"); - &mov ($B,"edi"); - &data_byte(0xf3,0xa5); # rep movsl, memcpy - &mov ("ecx",$pad/4); - &data_byte(0xf3,0xab); # rep stosl, bzero pad - # edi points at the end of padded bp copy... - - &mov ("ecx","ebp"); - &mov ("esi","edx"); - &mov ($M,"edi"); - &data_byte(0xf3,0xa5); # rep movsl, memcpy - &mov ("ecx",$pad/4); - &data_byte(0xf3,0xab); # rep stosl, bzero pad - # edi points at the end of padded np copy... - - # let magic happen... - &mov ("ecx","ebp"); - &mov ("esi","esp"); - &shl ("ecx",5); # convert word counter to bit counter - &align (4); - &data_byte(0xf3,0x0f,0xa6,0xc0);# rep montmul - - &mov ("ecx","ebp"); - &lea ("esi",&DWP(64,"esp")); # tp - # edi still points at the end of padded np copy... - &neg ("ebp"); - &lea ("ebp",&DWP(-$pad,"edi","ebp",4)); # so just "rewind" - &mov ("edi",$rp); # restore rp - &xor ("edx","edx"); # i=0 and clear CF - -&set_label("sub",8); - &mov ("eax",&DWP(0,"esi","edx",4)); - &sbb ("eax",&DWP(0,"ebp","edx",4)); - &mov (&DWP(0,"edi","edx",4),"eax"); # rp[i]=tp[i]-np[i] - &lea ("edx",&DWP(1,"edx")); # i++ - &loop (&label("sub")); # doesn't affect CF! - - &mov ("eax",&DWP(0,"esi","edx",4)); # upmost overflow bit - &sbb ("eax",0); - &and ("esi","eax"); - ¬ ("eax"); - &mov ("ebp","edi"); - &and ("ebp","eax"); - &or ("esi","ebp"); # tp=carry?tp:rp - - &mov ("ecx","edx"); # num - &xor ("edx","edx"); # i=0 - -&set_label("copy",8); - &mov ("eax",&DWP(0,"esi","edx",4)); - &mov (&DWP(64,"esp","edx",4),"ecx"); # zap tp - &mov (&DWP(0,"edi","edx",4),"eax"); - &lea ("edx",&DWP(1,"edx")); # i++ - &loop (&label("copy")); - - &mov ("ebp",$sp); - &xor ("eax","eax"); - - &mov ("ecx",64/4); - &mov ("edi","esp"); # zap frame including scratch area - &data_byte(0xf3,0xab); # rep stosl, bzero - - # zap copies of ap, bp and np - &lea ("edi",&DWP(64+$pad,"esp","edx",4));# pointer to ap - &lea ("ecx",&DWP(3*$pad/4,"edx","edx",2)); - &data_byte(0xf3,0xab); # rep stosl, bzero - - &mov ("esp","ebp"); - &inc ("eax"); # signal "done" - &popf (); -&set_label("leave"); -&function_end($func); - -&asciz("Padlock Montgomery Multiplication, CRYPTOGAMS by <appro\@openssl.org>"); - -&asm_finish(); |