| #!/usr/bin/env perl |
| # |
| # ==================================================================== |
| # Written by Andy Polyakov <appro@openssl.org> 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/. |
| # ==================================================================== |
| # |
| # This module implements Poly1305 hash for x86. |
| # |
| # April 2015 |
| # |
| # Numbers are cycles per processed byte with poly1305_blocks alone, |
| # measured with rdtsc at fixed clock frequency. |
| # |
| # IALU/gcc-3.4(*) SSE2(**) AVX2 |
| # Pentium 15.7/+80% - |
| # PIII 6.21/+90% - |
| # P4 19.8/+40% 3.24 |
| # Core 2 4.85/+90% 1.80 |
| # Westmere 4.58/+100% 1.43 |
| # Sandy Bridge 3.90/+100% 1.36 |
| # Haswell 3.88/+70% 1.18 0.72 |
| # Silvermont 11.0/+40% 4.80 |
| # VIA Nano 6.71/+90% 2.47 |
| # Sledgehammer 3.51/+180% 4.27 |
| # Bulldozer 4.53/+140% 1.31 |
| # |
| # (*) gcc 4.8 for some reason generated worse code; |
| # (**) besides SSE2 there are floating-point and AVX options; FP |
| # is deemed unnecessary, because pre-SSE2 processor are too |
| # old to care about, while it's not the fastest option on |
| # SSE2-capable ones; AVX is omitted, because it doesn't give |
| # a lot of improvement, 5-10% depending on processor; |
| |
| $0 =~ m/(.*[\/\\])[^\/\\]+$/; $dir=$1; |
| push(@INC,"${dir}","${dir}../../perlasm"); |
| require "x86asm.pl"; |
| |
| &asm_init($ARGV[0],"poly1305-x86.pl",$ARGV[$#ARGV] eq "386"); |
| |
| $sse2=$avx=0; |
| for (@ARGV) { $sse2=1 if (/-DOPENSSL_IA32_SSE2/); } |
| |
| if ($sse2) { |
| &static_label("const_sse2"); |
| &static_label("enter_blocks"); |
| &static_label("enter_emit"); |
| &external_label("OPENSSL_ia32cap_P"); |
| |
| # This may be set to 2, but the AVX2 code doesn't work. |
| # https://rt.openssl.org/Ticket/Display.html?id=4346 |
| $avx = 0; |
| } |
| |
| ######################################################################## |
| # Layout of opaque area is following. |
| # |
| # unsigned __int32 h[5]; # current hash value base 2^32 |
| # unsigned __int32 pad; # is_base2_26 in vector context |
| # unsigned __int32 r[4]; # key value base 2^32 |
| |
| &align(64); |
| &function_begin("poly1305_init"); |
| &mov ("edi",&wparam(0)); # context |
| &mov ("esi",&wparam(1)); # key |
| &mov ("ebp",&wparam(2)); # function table |
| |
| &xor ("eax","eax"); |
| &mov (&DWP(4*0,"edi"),"eax"); # zero hash value |
| &mov (&DWP(4*1,"edi"),"eax"); |
| &mov (&DWP(4*2,"edi"),"eax"); |
| &mov (&DWP(4*3,"edi"),"eax"); |
| &mov (&DWP(4*4,"edi"),"eax"); |
| &mov (&DWP(4*5,"edi"),"eax"); # is_base2_26 |
| |
| &cmp ("esi",0); |
| &je (&label("nokey")); |
| |
| if ($sse2) { |
| &call (&label("pic_point")); |
| &set_label("pic_point"); |
| &blindpop("ebx"); |
| |
| &lea ("eax",&DWP("poly1305_blocks-".&label("pic_point"),"ebx")); |
| &lea ("edx",&DWP("poly1305_emit-".&label("pic_point"),"ebx")); |
| |
| &picmeup("edi","OPENSSL_ia32cap_P","ebx",&label("pic_point")); |
| &mov ("ecx",&DWP(0,"edi")); |
| &and ("ecx",1<<26|1<<24); |
| &cmp ("ecx",1<<26|1<<24); # SSE2 and XMM? |
| &jne (&label("no_sse2")); |
| |
| &lea ("eax",&DWP("_poly1305_blocks_sse2-".&label("pic_point"),"ebx")); |
| &lea ("edx",&DWP("_poly1305_emit_sse2-".&label("pic_point"),"ebx")); |
| |
| if ($avx>1) { |
| &mov ("ecx",&DWP(8,"edi")); |
| &test ("ecx",1<<5); # AVX2? |
| &jz (&label("no_sse2")); |
| |
| &lea ("eax",&DWP("_poly1305_blocks_avx2-".&label("pic_point"),"ebx")); |
| } |
| &set_label("no_sse2"); |
| &mov ("edi",&wparam(0)); # reload context |
| &mov (&DWP(0,"ebp"),"eax"); # fill function table |
| &mov (&DWP(4,"ebp"),"edx"); |
| } |
| |
| &mov ("eax",&DWP(4*0,"esi")); # load input key |
| &mov ("ebx",&DWP(4*1,"esi")); |
| &mov ("ecx",&DWP(4*2,"esi")); |
| &mov ("edx",&DWP(4*3,"esi")); |
| &and ("eax",0x0fffffff); |
| &and ("ebx",0x0ffffffc); |
| &and ("ecx",0x0ffffffc); |
| &and ("edx",0x0ffffffc); |
| &mov (&DWP(4*6,"edi"),"eax"); |
| &mov (&DWP(4*7,"edi"),"ebx"); |
| &mov (&DWP(4*8,"edi"),"ecx"); |
| &mov (&DWP(4*9,"edi"),"edx"); |
| |
| &mov ("eax",$sse2); |
| &set_label("nokey"); |
| &function_end("poly1305_init"); |
| |
| ($h0,$h1,$h2,$h3,$h4, |
| $d0,$d1,$d2,$d3, |
| $r0,$r1,$r2,$r3, |
| $s1,$s2,$s3)=map(4*$_,(0..15)); |
| |
| &function_begin("poly1305_blocks"); |
| &mov ("edi",&wparam(0)); # ctx |
| &mov ("esi",&wparam(1)); # inp |
| &mov ("ecx",&wparam(2)); # len |
| &set_label("enter_blocks"); |
| &and ("ecx",-15); |
| &jz (&label("nodata")); |
| |
| &stack_push(16); |
| &mov ("eax",&DWP(4*6,"edi")); # r0 |
| &mov ("ebx",&DWP(4*7,"edi")); # r1 |
| &lea ("ebp",&DWP(0,"esi","ecx")); # end of input |
| &mov ("ecx",&DWP(4*8,"edi")); # r2 |
| &mov ("edx",&DWP(4*9,"edi")); # r3 |
| |
| &mov (&wparam(2),"ebp"); |
| &mov ("ebp","esi"); |
| |
| &mov (&DWP($r0,"esp"),"eax"); # r0 |
| &mov ("eax","ebx"); |
| &shr ("eax",2); |
| &mov (&DWP($r1,"esp"),"ebx"); # r1 |
| &add ("eax","ebx"); # s1 |
| &mov ("ebx","ecx"); |
| &shr ("ebx",2); |
| &mov (&DWP($r2,"esp"),"ecx"); # r2 |
| &add ("ebx","ecx"); # s2 |
| &mov ("ecx","edx"); |
| &shr ("ecx",2); |
| &mov (&DWP($r3,"esp"),"edx"); # r3 |
| &add ("ecx","edx"); # s3 |
| &mov (&DWP($s1,"esp"),"eax"); # s1 |
| &mov (&DWP($s2,"esp"),"ebx"); # s2 |
| &mov (&DWP($s3,"esp"),"ecx"); # s3 |
| |
| &mov ("eax",&DWP(4*0,"edi")); # load hash value |
| &mov ("ebx",&DWP(4*1,"edi")); |
| &mov ("ecx",&DWP(4*2,"edi")); |
| &mov ("esi",&DWP(4*3,"edi")); |
| &mov ("edi",&DWP(4*4,"edi")); |
| &jmp (&label("loop")); |
| |
| &set_label("loop",32); |
| &add ("eax",&DWP(4*0,"ebp")); # accumulate input |
| &adc ("ebx",&DWP(4*1,"ebp")); |
| &adc ("ecx",&DWP(4*2,"ebp")); |
| &adc ("esi",&DWP(4*3,"ebp")); |
| &lea ("ebp",&DWP(4*4,"ebp")); |
| &adc ("edi",&wparam(3)); # padbit |
| |
| &mov (&DWP($h0,"esp"),"eax"); # put aside hash[+inp] |
| &mov (&DWP($h3,"esp"),"esi"); |
| |
| &mul (&DWP($r0,"esp")); # h0*r0 |
| &mov (&DWP($h4,"esp"),"edi"); |
| &mov ("edi","eax"); |
| &mov ("eax","ebx"); # h1 |
| &mov ("esi","edx"); |
| &mul (&DWP($s3,"esp")); # h1*s3 |
| &add ("edi","eax"); |
| &mov ("eax","ecx"); # h2 |
| &adc ("esi","edx"); |
| &mul (&DWP($s2,"esp")); # h2*s2 |
| &add ("edi","eax"); |
| &mov ("eax",&DWP($h3,"esp")); |
| &adc ("esi","edx"); |
| &mul (&DWP($s1,"esp")); # h3*s1 |
| &add ("edi","eax"); |
| &mov ("eax",&DWP($h0,"esp")); |
| &adc ("esi","edx"); |
| |
| &mul (&DWP($r1,"esp")); # h0*r1 |
| &mov (&DWP($d0,"esp"),"edi"); |
| &xor ("edi","edi"); |
| &add ("esi","eax"); |
| &mov ("eax","ebx"); # h1 |
| &adc ("edi","edx"); |
| &mul (&DWP($r0,"esp")); # h1*r0 |
| &add ("esi","eax"); |
| &mov ("eax","ecx"); # h2 |
| &adc ("edi","edx"); |
| &mul (&DWP($s3,"esp")); # h2*s3 |
| &add ("esi","eax"); |
| &mov ("eax",&DWP($h3,"esp")); |
| &adc ("edi","edx"); |
| &mul (&DWP($s2,"esp")); # h3*s2 |
| &add ("esi","eax"); |
| &mov ("eax",&DWP($h4,"esp")); |
| &adc ("edi","edx"); |
| &imul ("eax",&DWP($s1,"esp")); # h4*s1 |
| &add ("esi","eax"); |
| &mov ("eax",&DWP($h0,"esp")); |
| &adc ("edi",0); |
| |
| &mul (&DWP($r2,"esp")); # h0*r2 |
| &mov (&DWP($d1,"esp"),"esi"); |
| &xor ("esi","esi"); |
| &add ("edi","eax"); |
| &mov ("eax","ebx"); # h1 |
| &adc ("esi","edx"); |
| &mul (&DWP($r1,"esp")); # h1*r1 |
| &add ("edi","eax"); |
| &mov ("eax","ecx"); # h2 |
| &adc ("esi","edx"); |
| &mul (&DWP($r0,"esp")); # h2*r0 |
| &add ("edi","eax"); |
| &mov ("eax",&DWP($h3,"esp")); |
| &adc ("esi","edx"); |
| &mul (&DWP($s3,"esp")); # h3*s3 |
| &add ("edi","eax"); |
| &mov ("eax",&DWP($h4,"esp")); |
| &adc ("esi","edx"); |
| &imul ("eax",&DWP($s2,"esp")); # h4*s2 |
| &add ("edi","eax"); |
| &mov ("eax",&DWP($h0,"esp")); |
| &adc ("esi",0); |
| |
| &mul (&DWP($r3,"esp")); # h0*r3 |
| &mov (&DWP($d2,"esp"),"edi"); |
| &xor ("edi","edi"); |
| &add ("esi","eax"); |
| &mov ("eax","ebx"); # h1 |
| &adc ("edi","edx"); |
| &mul (&DWP($r2,"esp")); # h1*r2 |
| &add ("esi","eax"); |
| &mov ("eax","ecx"); # h2 |
| &adc ("edi","edx"); |
| &mul (&DWP($r1,"esp")); # h2*r1 |
| &add ("esi","eax"); |
| &mov ("eax",&DWP($h3,"esp")); |
| &adc ("edi","edx"); |
| &mul (&DWP($r0,"esp")); # h3*r0 |
| &add ("esi","eax"); |
| &mov ("ecx",&DWP($h4,"esp")); |
| &adc ("edi","edx"); |
| |
| &mov ("edx","ecx"); |
| &imul ("ecx",&DWP($s3,"esp")); # h4*s3 |
| &add ("esi","ecx"); |
| &mov ("eax",&DWP($d0,"esp")); |
| &adc ("edi",0); |
| |
| &imul ("edx",&DWP($r0,"esp")); # h4*r0 |
| &add ("edx","edi"); |
| |
| &mov ("ebx",&DWP($d1,"esp")); |
| &mov ("ecx",&DWP($d2,"esp")); |
| |
| &mov ("edi","edx"); # last reduction step |
| &shr ("edx",2); |
| &and ("edi",3); |
| &lea ("edx",&DWP(0,"edx","edx",4)); # *5 |
| &add ("eax","edx"); |
| &adc ("ebx",0); |
| &adc ("ecx",0); |
| &adc ("esi",0); |
| |
| &cmp ("ebp",&wparam(2)); # done yet? |
| &jne (&label("loop")); |
| |
| &mov ("edx",&wparam(0)); # ctx |
| &stack_pop(16); |
| &mov (&DWP(4*0,"edx"),"eax"); # store hash value |
| &mov (&DWP(4*1,"edx"),"ebx"); |
| &mov (&DWP(4*2,"edx"),"ecx"); |
| &mov (&DWP(4*3,"edx"),"esi"); |
| &mov (&DWP(4*4,"edx"),"edi"); |
| &set_label("nodata"); |
| &function_end("poly1305_blocks"); |
| |
| &function_begin("poly1305_emit"); |
| &mov ("ebp",&wparam(0)); # context |
| &set_label("enter_emit"); |
| &mov ("edi",&wparam(1)); # output |
| &mov ("eax",&DWP(4*0,"ebp")); # load hash value |
| &mov ("ebx",&DWP(4*1,"ebp")); |
| &mov ("ecx",&DWP(4*2,"ebp")); |
| &mov ("edx",&DWP(4*3,"ebp")); |
| &mov ("esi",&DWP(4*4,"ebp")); |
| |
| &add ("eax",5); # compare to modulus |
| &adc ("ebx",0); |
| &adc ("ecx",0); |
| &adc ("edx",0); |
| &adc ("esi",0); |
| &shr ("esi",2); # did it carry/borrow? |
| &neg ("esi"); # do we choose hash-modulus? |
| |
| &and ("eax","esi"); |
| &and ("ebx","esi"); |
| &and ("ecx","esi"); |
| &and ("edx","esi"); |
| &mov (&DWP(4*0,"edi"),"eax"); |
| &mov (&DWP(4*1,"edi"),"ebx"); |
| &mov (&DWP(4*2,"edi"),"ecx"); |
| &mov (&DWP(4*3,"edi"),"edx"); |
| |
| ¬ ("esi"); # or original hash value? |
| &mov ("eax",&DWP(4*0,"ebp")); |
| &mov ("ebx",&DWP(4*1,"ebp")); |
| &mov ("ecx",&DWP(4*2,"ebp")); |
| &mov ("edx",&DWP(4*3,"ebp")); |
| &mov ("ebp",&wparam(2)); |
| &and ("eax","esi"); |
| &and ("ebx","esi"); |
| &and ("ecx","esi"); |
| &and ("edx","esi"); |
| &or ("eax",&DWP(4*0,"edi")); |
| &or ("ebx",&DWP(4*1,"edi")); |
| &or ("ecx",&DWP(4*2,"edi")); |
| &or ("edx",&DWP(4*3,"edi")); |
| |
| &add ("eax",&DWP(4*0,"ebp")); # accumulate key |
| &adc ("ebx",&DWP(4*1,"ebp")); |
| &adc ("ecx",&DWP(4*2,"ebp")); |
| &adc ("edx",&DWP(4*3,"ebp")); |
| |
| &mov (&DWP(4*0,"edi"),"eax"); |
| &mov (&DWP(4*1,"edi"),"ebx"); |
| &mov (&DWP(4*2,"edi"),"ecx"); |
| &mov (&DWP(4*3,"edi"),"edx"); |
| &function_end("poly1305_emit"); |
| |
| if ($sse2) { |
| ######################################################################## |
| # Layout of opaque area is following. |
| # |
| # unsigned __int32 h[5]; # current hash value base 2^26 |
| # unsigned __int32 is_base2_26; |
| # unsigned __int32 r[4]; # key value base 2^32 |
| # unsigned __int32 pad[2]; |
| # struct { unsigned __int32 r^4, r^3, r^2, r^1; } r[9]; |
| # |
| # where r^n are base 2^26 digits of degrees of multiplier key. There are |
| # 5 digits, but last four are interleaved with multiples of 5, totalling |
| # in 9 elements: r0, r1, 5*r1, r2, 5*r2, r3, 5*r3, r4, 5*r4. |
| |
| my ($D0,$D1,$D2,$D3,$D4,$T0,$T1,$T2)=map("xmm$_",(0..7)); |
| my $MASK=$T2; # borrow and keep in mind |
| |
| &align (32); |
| &function_begin_B("_poly1305_init_sse2"); |
| &movdqu ($D4,&QWP(4*6,"edi")); # key base 2^32 |
| &lea ("edi",&DWP(16*3,"edi")); # size optimization |
| &mov ("ebp","esp"); |
| &sub ("esp",16*(9+5)); |
| &and ("esp",-16); |
| |
| #&pand ($D4,&QWP(96,"ebx")); # magic mask |
| &movq ($MASK,&QWP(64,"ebx")); |
| |
| &movdqa ($D0,$D4); |
| &movdqa ($D1,$D4); |
| &movdqa ($D2,$D4); |
| |
| &pand ($D0,$MASK); # -> base 2^26 |
| &psrlq ($D1,26); |
| &psrldq ($D2,6); |
| &pand ($D1,$MASK); |
| &movdqa ($D3,$D2); |
| &psrlq ($D2,4) |
| &psrlq ($D3,30); |
| &pand ($D2,$MASK); |
| &pand ($D3,$MASK); |
| &psrldq ($D4,13); |
| |
| &lea ("edx",&DWP(16*9,"esp")); # size optimization |
| &mov ("ecx",2); |
| &set_label("square"); |
| &movdqa (&QWP(16*0,"esp"),$D0); |
| &movdqa (&QWP(16*1,"esp"),$D1); |
| &movdqa (&QWP(16*2,"esp"),$D2); |
| &movdqa (&QWP(16*3,"esp"),$D3); |
| &movdqa (&QWP(16*4,"esp"),$D4); |
| |
| &movdqa ($T1,$D1); |
| &movdqa ($T0,$D2); |
| &pslld ($T1,2); |
| &pslld ($T0,2); |
| &paddd ($T1,$D1); # *5 |
| &paddd ($T0,$D2); # *5 |
| &movdqa (&QWP(16*5,"esp"),$T1); |
| &movdqa (&QWP(16*6,"esp"),$T0); |
| &movdqa ($T1,$D3); |
| &movdqa ($T0,$D4); |
| &pslld ($T1,2); |
| &pslld ($T0,2); |
| &paddd ($T1,$D3); # *5 |
| &paddd ($T0,$D4); # *5 |
| &movdqa (&QWP(16*7,"esp"),$T1); |
| &movdqa (&QWP(16*8,"esp"),$T0); |
| |
| &pshufd ($T1,$D0,0b01000100); |
| &movdqa ($T0,$D1); |
| &pshufd ($D1,$D1,0b01000100); |
| &pshufd ($D2,$D2,0b01000100); |
| &pshufd ($D3,$D3,0b01000100); |
| &pshufd ($D4,$D4,0b01000100); |
| &movdqa (&QWP(16*0,"edx"),$T1); |
| &movdqa (&QWP(16*1,"edx"),$D1); |
| &movdqa (&QWP(16*2,"edx"),$D2); |
| &movdqa (&QWP(16*3,"edx"),$D3); |
| &movdqa (&QWP(16*4,"edx"),$D4); |
| |
| ################################################################ |
| # d4 = h4*r0 + h3*r1 + h2*r2 + h1*r3 + h0*r4 |
| # d3 = h3*r0 + h2*r1 + h1*r2 + h0*r3 + h4*5*r4 |
| # d2 = h2*r0 + h1*r1 + h0*r2 + h4*5*r3 + h3*5*r4 |
| # d1 = h1*r0 + h0*r1 + h4*5*r2 + h3*5*r3 + h2*5*r4 |
| # d0 = h0*r0 + h4*5*r1 + h3*5*r2 + h2*5*r3 + h1*5*r4 |
| |
| &pmuludq ($D4,$D0); # h4*r0 |
| &pmuludq ($D3,$D0); # h3*r0 |
| &pmuludq ($D2,$D0); # h2*r0 |
| &pmuludq ($D1,$D0); # h1*r0 |
| &pmuludq ($D0,$T1); # h0*r0 |
| |
| sub pmuladd { |
| my $load = shift; |
| my $base = shift; $base = "esp" if (!defined($base)); |
| |
| ################################################################ |
| # As for choice to "rotate" $T0-$T2 in order to move paddq |
| # past next multiplication. While it makes code harder to read |
| # and doesn't have significant effect on most processors, it |
| # makes a lot of difference on Atom, up to 30% improvement. |
| |
| &movdqa ($T1,$T0); |
| &pmuludq ($T0,&QWP(16*3,$base)); # r1*h3 |
| &movdqa ($T2,$T1); |
| &pmuludq ($T1,&QWP(16*2,$base)); # r1*h2 |
| &paddq ($D4,$T0); |
| &movdqa ($T0,$T2); |
| &pmuludq ($T2,&QWP(16*1,$base)); # r1*h1 |
| &paddq ($D3,$T1); |
| &$load ($T1,5); # s1 |
| &pmuludq ($T0,&QWP(16*0,$base)); # r1*h0 |
| &paddq ($D2,$T2); |
| &pmuludq ($T1,&QWP(16*4,$base)); # s1*h4 |
| &$load ($T2,2); # r2^n |
| &paddq ($D1,$T0); |
| |
| &movdqa ($T0,$T2); |
| &pmuludq ($T2,&QWP(16*2,$base)); # r2*h2 |
| &paddq ($D0,$T1); |
| &movdqa ($T1,$T0); |
| &pmuludq ($T0,&QWP(16*1,$base)); # r2*h1 |
| &paddq ($D4,$T2); |
| &$load ($T2,6); # s2^n |
| &pmuludq ($T1,&QWP(16*0,$base)); # r2*h0 |
| &paddq ($D3,$T0); |
| &movdqa ($T0,$T2); |
| &pmuludq ($T2,&QWP(16*4,$base)); # s2*h4 |
| &paddq ($D2,$T1); |
| &pmuludq ($T0,&QWP(16*3,$base)); # s2*h3 |
| &$load ($T1,3); # r3^n |
| &paddq ($D1,$T2); |
| |
| &movdqa ($T2,$T1); |
| &pmuludq ($T1,&QWP(16*1,$base)); # r3*h1 |
| &paddq ($D0,$T0); |
| &$load ($T0,7); # s3^n |
| &pmuludq ($T2,&QWP(16*0,$base)); # r3*h0 |
| &paddq ($D4,$T1); |
| &movdqa ($T1,$T0); |
| &pmuludq ($T0,&QWP(16*4,$base)); # s3*h4 |
| &paddq ($D3,$T2); |
| &movdqa ($T2,$T1); |
| &pmuludq ($T1,&QWP(16*3,$base)); # s3*h3 |
| &paddq ($D2,$T0); |
| &pmuludq ($T2,&QWP(16*2,$base)); # s3*h2 |
| &$load ($T0,4); # r4^n |
| &paddq ($D1,$T1); |
| |
| &$load ($T1,8); # s4^n |
| &pmuludq ($T0,&QWP(16*0,$base)); # r4*h0 |
| &paddq ($D0,$T2); |
| &movdqa ($T2,$T1); |
| &pmuludq ($T1,&QWP(16*4,$base)); # s4*h4 |
| &paddq ($D4,$T0); |
| &movdqa ($T0,$T2); |
| &pmuludq ($T2,&QWP(16*1,$base)); # s4*h1 |
| &paddq ($D3,$T1); |
| &movdqa ($T1,$T0); |
| &pmuludq ($T0,&QWP(16*2,$base)); # s4*h2 |
| &paddq ($D0,$T2); |
| &pmuludq ($T1,&QWP(16*3,$base)); # s4*h3 |
| &movdqa ($MASK,&QWP(64,"ebx")); |
| &paddq ($D1,$T0); |
| &paddq ($D2,$T1); |
| } |
| &pmuladd (sub { my ($reg,$i)=@_; |
| &movdqa ($reg,&QWP(16*$i,"esp")); |
| },"edx"); |
| |
| sub lazy_reduction { |
| ################################################################ |
| # lazy reduction as discussed in "NEON crypto" by D.J. Bernstein |
| # and P. Schwabe |
| |
| &movdqa ($T0,$D3); |
| &pand ($D3,$MASK); |
| &psrlq ($T0,26); |
| &paddq ($T0,$D4); # h3 -> h4 |
| &movdqa ($T1,$D0); |
| &pand ($D0,$MASK); |
| &psrlq ($T1,26); |
| &movdqa ($D4,$T0); |
| &paddq ($T1,$D1); # h0 -> h1 |
| &psrlq ($T0,26); |
| &pand ($D4,$MASK); |
| &movdqa ($D1,$T1); |
| &psrlq ($T1,26); |
| &paddd ($D0,$T0); # favour paddd when |
| # possible, because |
| # paddq is "broken" |
| # on Atom |
| &pand ($D1,$MASK); |
| &paddq ($T1,$D2); # h1 -> h2 |
| &psllq ($T0,2); |
| &movdqa ($D2,$T1); |
| &psrlq ($T1,26); |
| &paddd ($T0,$D0); # h4 -> h0 |
| &pand ($D2,$MASK); |
| &paddd ($T1,$D3); # h2 -> h3 |
| &movdqa ($D0,$T0); |
| &psrlq ($T0,26); |
| &movdqa ($D3,$T1); |
| &psrlq ($T1,26); |
| &pand ($D0,$MASK); |
| &paddd ($D1,$T0); # h0 -> h1 |
| &pand ($D3,$MASK); |
| &paddd ($D4,$T1); # h3 -> h4 |
| } |
| &lazy_reduction (); |
| |
| &dec ("ecx"); |
| &jz (&label("square_break")); |
| |
| &punpcklqdq ($D0,&QWP(16*0,"esp")); # 0:r^1:0:r^2 |
| &punpcklqdq ($D1,&QWP(16*1,"esp")); |
| &punpcklqdq ($D2,&QWP(16*2,"esp")); |
| &punpcklqdq ($D3,&QWP(16*3,"esp")); |
| &punpcklqdq ($D4,&QWP(16*4,"esp")); |
| &jmp (&label("square")); |
| |
| &set_label("square_break"); |
| &psllq ($D0,32); # -> r^3:0:r^4:0 |
| &psllq ($D1,32); |
| &psllq ($D2,32); |
| &psllq ($D3,32); |
| &psllq ($D4,32); |
| &por ($D0,&QWP(16*0,"esp")); # r^3:r^1:r^4:r^2 |
| &por ($D1,&QWP(16*1,"esp")); |
| &por ($D2,&QWP(16*2,"esp")); |
| &por ($D3,&QWP(16*3,"esp")); |
| &por ($D4,&QWP(16*4,"esp")); |
| |
| &pshufd ($D0,$D0,0b10001101); # -> r^1:r^2:r^3:r^4 |
| &pshufd ($D1,$D1,0b10001101); |
| &pshufd ($D2,$D2,0b10001101); |
| &pshufd ($D3,$D3,0b10001101); |
| &pshufd ($D4,$D4,0b10001101); |
| |
| &movdqu (&QWP(16*0,"edi"),$D0); # save the table |
| &movdqu (&QWP(16*1,"edi"),$D1); |
| &movdqu (&QWP(16*2,"edi"),$D2); |
| &movdqu (&QWP(16*3,"edi"),$D3); |
| &movdqu (&QWP(16*4,"edi"),$D4); |
| |
| &movdqa ($T1,$D1); |
| &movdqa ($T0,$D2); |
| &pslld ($T1,2); |
| &pslld ($T0,2); |
| &paddd ($T1,$D1); # *5 |
| &paddd ($T0,$D2); # *5 |
| &movdqu (&QWP(16*5,"edi"),$T1); |
| &movdqu (&QWP(16*6,"edi"),$T0); |
| &movdqa ($T1,$D3); |
| &movdqa ($T0,$D4); |
| &pslld ($T1,2); |
| &pslld ($T0,2); |
| &paddd ($T1,$D3); # *5 |
| &paddd ($T0,$D4); # *5 |
| &movdqu (&QWP(16*7,"edi"),$T1); |
| &movdqu (&QWP(16*8,"edi"),$T0); |
| |
| &mov ("esp","ebp"); |
| &lea ("edi",&DWP(-16*3,"edi")); # size de-optimization |
| &ret (); |
| &function_end_B("_poly1305_init_sse2"); |
| |
| &align (32); |
| &function_begin("_poly1305_blocks_sse2"); |
| &mov ("edi",&wparam(0)); # ctx |
| &mov ("esi",&wparam(1)); # inp |
| &mov ("ecx",&wparam(2)); # len |
| |
| &mov ("eax",&DWP(4*5,"edi")); # is_base2_26 |
| &and ("ecx",-16); |
| &jz (&label("nodata")); |
| &cmp ("ecx",64); |
| &jae (&label("enter_sse2")); |
| &test ("eax","eax"); # is_base2_26? |
| &jz (&label("enter_blocks")); |
| |
| &set_label("enter_sse2",16); |
| &call (&label("pic_point")); |
| &set_label("pic_point"); |
| &blindpop("ebx"); |
| &lea ("ebx",&DWP(&label("const_sse2")."-".&label("pic_point"),"ebx")); |
| |
| &test ("eax","eax"); # is_base2_26? |
| &jnz (&label("base2_26")); |
| |
| &call ("_poly1305_init_sse2"); |
| |
| ################################################# base 2^32 -> base 2^26 |
| &mov ("eax",&DWP(0,"edi")); |
| &mov ("ecx",&DWP(3,"edi")); |
| &mov ("edx",&DWP(6,"edi")); |
| &mov ("esi",&DWP(9,"edi")); |
| &mov ("ebp",&DWP(13,"edi")); |
| &mov (&DWP(4*5,"edi"),1); # is_base2_26 |
| |
| &shr ("ecx",2); |
| &and ("eax",0x3ffffff); |
| &shr ("edx",4); |
| &and ("ecx",0x3ffffff); |
| &shr ("esi",6); |
| &and ("edx",0x3ffffff); |
| |
| &movd ($D0,"eax"); |
| &movd ($D1,"ecx"); |
| &movd ($D2,"edx"); |
| &movd ($D3,"esi"); |
| &movd ($D4,"ebp"); |
| |
| &mov ("esi",&wparam(1)); # [reload] inp |
| &mov ("ecx",&wparam(2)); # [reload] len |
| &jmp (&label("base2_32")); |
| |
| &set_label("base2_26",16); |
| &movd ($D0,&DWP(4*0,"edi")); # load hash value |
| &movd ($D1,&DWP(4*1,"edi")); |
| &movd ($D2,&DWP(4*2,"edi")); |
| &movd ($D3,&DWP(4*3,"edi")); |
| &movd ($D4,&DWP(4*4,"edi")); |
| &movdqa ($MASK,&QWP(64,"ebx")); |
| |
| &set_label("base2_32"); |
| &mov ("eax",&wparam(3)); # padbit |
| &mov ("ebp","esp"); |
| |
| &sub ("esp",16*(5+5+5+9+9)); |
| &and ("esp",-16); |
| |
| &lea ("edi",&DWP(16*3,"edi")); # size optimization |
| &shl ("eax",24); # padbit |
| |
| &test ("ecx",31); |
| &jz (&label("even")); |
| |
| ################################################################ |
| # process single block, with SSE2, because it's still faster |
| # even though half of result is discarded |
| |
| &movdqu ($T1,&QWP(0,"esi")); # input |
| &lea ("esi",&DWP(16,"esi")); |
| |
| &movdqa ($T0,$T1); # -> base 2^26 ... |
| &pand ($T1,$MASK); |
| &paddd ($D0,$T1); # ... and accumuate |
| |
| &movdqa ($T1,$T0); |
| &psrlq ($T0,26); |
| &psrldq ($T1,6); |
| &pand ($T0,$MASK); |
| &paddd ($D1,$T0); |
| |
| &movdqa ($T0,$T1); |
| &psrlq ($T1,4); |
| &pand ($T1,$MASK); |
| &paddd ($D2,$T1); |
| |
| &movdqa ($T1,$T0); |
| &psrlq ($T0,30); |
| &pand ($T0,$MASK); |
| &psrldq ($T1,7); |
| &paddd ($D3,$T0); |
| |
| &movd ($T0,"eax"); # padbit |
| &paddd ($D4,$T1); |
| &movd ($T1,&DWP(16*0+12,"edi")); # r0 |
| &paddd ($D4,$T0); |
| |
| &movdqa (&QWP(16*0,"esp"),$D0); |
| &movdqa (&QWP(16*1,"esp"),$D1); |
| &movdqa (&QWP(16*2,"esp"),$D2); |
| &movdqa (&QWP(16*3,"esp"),$D3); |
| &movdqa (&QWP(16*4,"esp"),$D4); |
| |
| ################################################################ |
| # d4 = h4*r0 + h3*r1 + h2*r2 + h1*r3 + h0*r4 |
| # d3 = h3*r0 + h2*r1 + h1*r2 + h0*r3 + h4*5*r4 |
| # d2 = h2*r0 + h1*r1 + h0*r2 + h4*5*r3 + h3*5*r4 |
| # d1 = h1*r0 + h0*r1 + h4*5*r2 + h3*5*r3 + h2*5*r4 |
| # d0 = h0*r0 + h4*5*r1 + h3*5*r2 + h2*5*r3 + h1*5*r4 |
| |
| &pmuludq ($D0,$T1); # h4*r0 |
| &pmuludq ($D1,$T1); # h3*r0 |
| &pmuludq ($D2,$T1); # h2*r0 |
| &movd ($T0,&DWP(16*1+12,"edi")); # r1 |
| &pmuludq ($D3,$T1); # h1*r0 |
| &pmuludq ($D4,$T1); # h0*r0 |
| |
| &pmuladd (sub { my ($reg,$i)=@_; |
| &movd ($reg,&DWP(16*$i+12,"edi")); |
| }); |
| |
| &lazy_reduction (); |
| |
| &sub ("ecx",16); |
| &jz (&label("done")); |
| |
| &set_label("even"); |
| &lea ("edx",&DWP(16*(5+5+5+9),"esp"));# size optimization |
| &lea ("eax",&DWP(-16*2,"esi")); |
| &sub ("ecx",64); |
| |
| ################################################################ |
| # expand and copy pre-calculated table to stack |
| |
| &movdqu ($T0,&QWP(16*0,"edi")); # r^1:r^2:r^3:r^4 |
| &pshufd ($T1,$T0,0b01000100); # duplicate r^3:r^4 |
| &cmovb ("esi","eax"); |
| &pshufd ($T0,$T0,0b11101110); # duplicate r^1:r^2 |
| &movdqa (&QWP(16*0,"edx"),$T1); |
| &lea ("eax",&DWP(16*10,"esp")); |
| &movdqu ($T1,&QWP(16*1,"edi")); |
| &movdqa (&QWP(16*(0-9),"edx"),$T0); |
| &pshufd ($T0,$T1,0b01000100); |
| &pshufd ($T1,$T1,0b11101110); |
| &movdqa (&QWP(16*1,"edx"),$T0); |
| &movdqu ($T0,&QWP(16*2,"edi")); |
| &movdqa (&QWP(16*(1-9),"edx"),$T1); |
| &pshufd ($T1,$T0,0b01000100); |
| &pshufd ($T0,$T0,0b11101110); |
| &movdqa (&QWP(16*2,"edx"),$T1); |
| &movdqu ($T1,&QWP(16*3,"edi")); |
| &movdqa (&QWP(16*(2-9),"edx"),$T0); |
| &pshufd ($T0,$T1,0b01000100); |
| &pshufd ($T1,$T1,0b11101110); |
| &movdqa (&QWP(16*3,"edx"),$T0); |
| &movdqu ($T0,&QWP(16*4,"edi")); |
| &movdqa (&QWP(16*(3-9),"edx"),$T1); |
| &pshufd ($T1,$T0,0b01000100); |
| &pshufd ($T0,$T0,0b11101110); |
| &movdqa (&QWP(16*4,"edx"),$T1); |
| &movdqu ($T1,&QWP(16*5,"edi")); |
| &movdqa (&QWP(16*(4-9),"edx"),$T0); |
| &pshufd ($T0,$T1,0b01000100); |
| &pshufd ($T1,$T1,0b11101110); |
| &movdqa (&QWP(16*5,"edx"),$T0); |
| &movdqu ($T0,&QWP(16*6,"edi")); |
| &movdqa (&QWP(16*(5-9),"edx"),$T1); |
| &pshufd ($T1,$T0,0b01000100); |
| &pshufd ($T0,$T0,0b11101110); |
| &movdqa (&QWP(16*6,"edx"),$T1); |
| &movdqu ($T1,&QWP(16*7,"edi")); |
| &movdqa (&QWP(16*(6-9),"edx"),$T0); |
| &pshufd ($T0,$T1,0b01000100); |
| &pshufd ($T1,$T1,0b11101110); |
| &movdqa (&QWP(16*7,"edx"),$T0); |
| &movdqu ($T0,&QWP(16*8,"edi")); |
| &movdqa (&QWP(16*(7-9),"edx"),$T1); |
| &pshufd ($T1,$T0,0b01000100); |
| &pshufd ($T0,$T0,0b11101110); |
| &movdqa (&QWP(16*8,"edx"),$T1); |
| &movdqa (&QWP(16*(8-9),"edx"),$T0); |
| |
| sub load_input { |
| my ($inpbase,$offbase)=@_; |
| |
| &movdqu ($T0,&QWP($inpbase+0,"esi")); # load input |
| &movdqu ($T1,&QWP($inpbase+16,"esi")); |
| &lea ("esi",&DWP(16*2,"esi")); |
| |
| &movdqa (&QWP($offbase+16*2,"esp"),$D2); |
| &movdqa (&QWP($offbase+16*3,"esp"),$D3); |
| &movdqa (&QWP($offbase+16*4,"esp"),$D4); |
| |
| &movdqa ($D2,$T0); # splat input |
| &movdqa ($D3,$T1); |
| &psrldq ($D2,6); |
| &psrldq ($D3,6); |
| &movdqa ($D4,$T0); |
| &punpcklqdq ($D2,$D3); # 2:3 |
| &punpckhqdq ($D4,$T1); # 4 |
| &punpcklqdq ($T0,$T1); # 0:1 |
| |
| &movdqa ($D3,$D2); |
| &psrlq ($D2,4); |
| &psrlq ($D3,30); |
| &movdqa ($T1,$T0); |
| &psrlq ($D4,40); # 4 |
| &psrlq ($T1,26); |
| &pand ($T0,$MASK); # 0 |
| &pand ($T1,$MASK); # 1 |
| &pand ($D2,$MASK); # 2 |
| &pand ($D3,$MASK); # 3 |
| &por ($D4,&QWP(0,"ebx")); # padbit, yes, always |
| |
| &movdqa (&QWP($offbase+16*0,"esp"),$D0) if ($offbase); |
| &movdqa (&QWP($offbase+16*1,"esp"),$D1) if ($offbase); |
| } |
| &load_input (16*2,16*5); |
| |
| &jbe (&label("skip_loop")); |
| &jmp (&label("loop")); |
| |
| &set_label("loop",32); |
| ################################################################ |
| # ((inp[0]*r^4+inp[2]*r^2+inp[4])*r^4+inp[6]*r^2 |
| # ((inp[1]*r^4+inp[3]*r^2+inp[5])*r^3+inp[7]*r |
| # \___________________/ |
| # ((inp[0]*r^4+inp[2]*r^2+inp[4])*r^4+inp[6]*r^2+inp[8])*r^2 |
| # ((inp[1]*r^4+inp[3]*r^2+inp[5])*r^4+inp[7]*r^2+inp[9])*r |
| # \___________________/ \____________________/ |
| ################################################################ |
| |
| &movdqa ($T2,&QWP(16*(0-9),"edx")); # r0^2 |
| &movdqa (&QWP(16*1,"eax"),$T1); |
| &movdqa (&QWP(16*2,"eax"),$D2); |
| &movdqa (&QWP(16*3,"eax"),$D3); |
| &movdqa (&QWP(16*4,"eax"),$D4); |
| |
| ################################################################ |
| # d4 = h4*r0 + h0*r4 + h1*r3 + h2*r2 + h3*r1 |
| # d3 = h3*r0 + h0*r3 + h1*r2 + h2*r1 + h4*5*r4 |
| # d2 = h2*r0 + h0*r2 + h1*r1 + h3*5*r4 + h4*5*r3 |
| # d1 = h1*r0 + h0*r1 + h2*5*r4 + h3*5*r3 + h4*5*r2 |
| # d0 = h0*r0 + h1*5*r4 + h2*5*r3 + h3*5*r2 + h4*5*r1 |
| |
| &movdqa ($D1,$T0); |
| &pmuludq ($T0,$T2); # h0*r0 |
| &movdqa ($D0,$T1); |
| &pmuludq ($T1,$T2); # h1*r0 |
| &pmuludq ($D2,$T2); # h2*r0 |
| &pmuludq ($D3,$T2); # h3*r0 |
| &pmuludq ($D4,$T2); # h4*r0 |
| |
| sub pmuladd_alt { |
| my $addr = shift; |
| |
| &pmuludq ($D0,&$addr(8)); # h1*s4 |
| &movdqa ($T2,$D1); |
| &pmuludq ($D1,&$addr(1)); # h0*r1 |
| &paddq ($D0,$T0); |
| &movdqa ($T0,$T2); |
| &pmuludq ($T2,&$addr(2)); # h0*r2 |
| &paddq ($D1,$T1); |
| &movdqa ($T1,$T0); |
| &pmuludq ($T0,&$addr(3)); # h0*r3 |
| &paddq ($D2,$T2); |
| &movdqa ($T2,&QWP(16*1,"eax")); # pull h1 |
| &pmuludq ($T1,&$addr(4)); # h0*r4 |
| &paddq ($D3,$T0); |
| |
| &movdqa ($T0,$T2); |
| &pmuludq ($T2,&$addr(1)); # h1*r1 |
| &paddq ($D4,$T1); |
| &movdqa ($T1,$T0); |
| &pmuludq ($T0,&$addr(2)); # h1*r2 |
| &paddq ($D2,$T2); |
| &movdqa ($T2,&QWP(16*2,"eax")); # pull h2 |
| &pmuludq ($T1,&$addr(3)); # h1*r3 |
| &paddq ($D3,$T0); |
| &movdqa ($T0,$T2); |
| &pmuludq ($T2,&$addr(7)); # h2*s3 |
| &paddq ($D4,$T1); |
| &movdqa ($T1,$T0); |
| &pmuludq ($T0,&$addr(8)); # h2*s4 |
| &paddq ($D0,$T2); |
| |
| &movdqa ($T2,$T1); |
| &pmuludq ($T1,&$addr(1)); # h2*r1 |
| &paddq ($D1,$T0); |
| &movdqa ($T0,&QWP(16*3,"eax")); # pull h3 |
| &pmuludq ($T2,&$addr(2)); # h2*r2 |
| &paddq ($D3,$T1); |
| &movdqa ($T1,$T0); |
| &pmuludq ($T0,&$addr(6)); # h3*s2 |
| &paddq ($D4,$T2); |
| &movdqa ($T2,$T1); |
| &pmuludq ($T1,&$addr(7)); # h3*s3 |
| &paddq ($D0,$T0); |
| &movdqa ($T0,$T2); |
| &pmuludq ($T2,&$addr(8)); # h3*s4 |
| &paddq ($D1,$T1); |
| |
| &movdqa ($T1,&QWP(16*4,"eax")); # pull h4 |
| &pmuludq ($T0,&$addr(1)); # h3*r1 |
| &paddq ($D2,$T2); |
| &movdqa ($T2,$T1); |
| &pmuludq ($T1,&$addr(8)); # h4*s4 |
| &paddq ($D4,$T0); |
| &movdqa ($T0,$T2); |
| &pmuludq ($T2,&$addr(5)); # h4*s1 |
| &paddq ($D3,$T1); |
| &movdqa ($T1,$T0); |
| &pmuludq ($T0,&$addr(6)); # h4*s2 |
| &paddq ($D0,$T2); |
| &movdqa ($MASK,&QWP(64,"ebx")); |
| &pmuludq ($T1,&$addr(7)); # h4*s3 |
| &paddq ($D1,$T0); |
| &paddq ($D2,$T1); |
| } |
| &pmuladd_alt (sub { my $i=shift; &QWP(16*($i-9),"edx"); }); |
| |
| &load_input (-16*2,0); |
| &lea ("eax",&DWP(-16*2,"esi")); |
| &sub ("ecx",64); |
| |
| &paddd ($T0,&QWP(16*(5+0),"esp")); # add hash value |
| &paddd ($T1,&QWP(16*(5+1),"esp")); |
| &paddd ($D2,&QWP(16*(5+2),"esp")); |
| &paddd ($D3,&QWP(16*(5+3),"esp")); |
| &paddd ($D4,&QWP(16*(5+4),"esp")); |
| |
| &cmovb ("esi","eax"); |
| &lea ("eax",&DWP(16*10,"esp")); |
| |
| &movdqa ($T2,&QWP(16*0,"edx")); # r0^4 |
| &movdqa (&QWP(16*1,"esp"),$D1); |
| &movdqa (&QWP(16*1,"eax"),$T1); |
| &movdqa (&QWP(16*2,"eax"),$D2); |
| &movdqa (&QWP(16*3,"eax"),$D3); |
| &movdqa (&QWP(16*4,"eax"),$D4); |
| |
| ################################################################ |
| # d4 += h4*r0 + h0*r4 + h1*r3 + h2*r2 + h3*r1 |
| # d3 += h3*r0 + h0*r3 + h1*r2 + h2*r1 + h4*5*r4 |
| # d2 += h2*r0 + h0*r2 + h1*r1 + h3*5*r4 + h4*5*r3 |
| # d1 += h1*r0 + h0*r1 + h2*5*r4 + h3*5*r3 + h4*5*r2 |
| # d0 += h0*r0 + h1*5*r4 + h2*5*r3 + h3*5*r2 + h4*5*r1 |
| |
| &movdqa ($D1,$T0); |
| &pmuludq ($T0,$T2); # h0*r0 |
| &paddq ($T0,$D0); |
| &movdqa ($D0,$T1); |
| &pmuludq ($T1,$T2); # h1*r0 |
| &pmuludq ($D2,$T2); # h2*r0 |
| &pmuludq ($D3,$T2); # h3*r0 |
| &pmuludq ($D4,$T2); # h4*r0 |
| |
| &paddq ($T1,&QWP(16*1,"esp")); |
| &paddq ($D2,&QWP(16*2,"esp")); |
| &paddq ($D3,&QWP(16*3,"esp")); |
| &paddq ($D4,&QWP(16*4,"esp")); |
| |
| &pmuladd_alt (sub { my $i=shift; &QWP(16*$i,"edx"); }); |
| |
| &lazy_reduction (); |
| |
| &load_input (16*2,16*5); |
| |
| &ja (&label("loop")); |
| |
| &set_label("skip_loop"); |
| ################################################################ |
| # multiply (inp[0:1]+hash) or inp[2:3] by r^2:r^1 |
| |
| &pshufd ($T2,&QWP(16*(0-9),"edx"),0x10);# r0^n |
| &add ("ecx",32); |
| &jnz (&label("long_tail")); |
| |
| &paddd ($T0,$D0); # add hash value |
| &paddd ($T1,$D1); |
| &paddd ($D2,&QWP(16*7,"esp")); |
| &paddd ($D3,&QWP(16*8,"esp")); |
| &paddd ($D4,&QWP(16*9,"esp")); |
| |
| &set_label("long_tail"); |
| |
| &movdqa (&QWP(16*0,"eax"),$T0); |
| &movdqa (&QWP(16*1,"eax"),$T1); |
| &movdqa (&QWP(16*2,"eax"),$D2); |
| &movdqa (&QWP(16*3,"eax"),$D3); |
| &movdqa (&QWP(16*4,"eax"),$D4); |
| |
| ################################################################ |
| # d4 = h4*r0 + h3*r1 + h2*r2 + h1*r3 + h0*r4 |
| # d3 = h3*r0 + h2*r1 + h1*r2 + h0*r3 + h4*5*r4 |
| # d2 = h2*r0 + h1*r1 + h0*r2 + h4*5*r3 + h3*5*r4 |
| # d1 = h1*r0 + h0*r1 + h4*5*r2 + h3*5*r3 + h2*5*r4 |
| # d0 = h0*r0 + h4*5*r1 + h3*5*r2 + h2*5*r3 + h1*5*r4 |
| |
| &pmuludq ($T0,$T2); # h0*r0 |
| &pmuludq ($T1,$T2); # h1*r0 |
| &pmuludq ($D2,$T2); # h2*r0 |
| &movdqa ($D0,$T0); |
| &pshufd ($T0,&QWP(16*(1-9),"edx"),0x10);# r1^n |
| &pmuludq ($D3,$T2); # h3*r0 |
| &movdqa ($D1,$T1); |
| &pmuludq ($D4,$T2); # h4*r0 |
| |
| &pmuladd (sub { my ($reg,$i)=@_; |
| &pshufd ($reg,&QWP(16*($i-9),"edx"),0x10); |
| },"eax"); |
| |
| &jz (&label("short_tail")); |
| |
| &load_input (-16*2,0); |
| |
| &pshufd ($T2,&QWP(16*0,"edx"),0x10); # r0^n |
| &paddd ($T0,&QWP(16*5,"esp")); # add hash value |
| &paddd ($T1,&QWP(16*6,"esp")); |
| &paddd ($D2,&QWP(16*7,"esp")); |
| &paddd ($D3,&QWP(16*8,"esp")); |
| &paddd ($D4,&QWP(16*9,"esp")); |
| |
| ################################################################ |
| # multiply inp[0:1] by r^4:r^3 and accumulate |
| |
| &movdqa (&QWP(16*0,"esp"),$T0); |
| &pmuludq ($T0,$T2); # h0*r0 |
| &movdqa (&QWP(16*1,"esp"),$T1); |
| &pmuludq ($T1,$T2); # h1*r0 |
| &paddq ($D0,$T0); |
| &movdqa ($T0,$D2); |
| &pmuludq ($D2,$T2); # h2*r0 |
| &paddq ($D1,$T1); |
| &movdqa ($T1,$D3); |
| &pmuludq ($D3,$T2); # h3*r0 |
| &paddq ($D2,&QWP(16*2,"esp")); |
| &movdqa (&QWP(16*2,"esp"),$T0); |
| &pshufd ($T0,&QWP(16*1,"edx"),0x10); # r1^n |
| &paddq ($D3,&QWP(16*3,"esp")); |
| &movdqa (&QWP(16*3,"esp"),$T1); |
| &movdqa ($T1,$D4); |
| &pmuludq ($D4,$T2); # h4*r0 |
| &paddq ($D4,&QWP(16*4,"esp")); |
| &movdqa (&QWP(16*4,"esp"),$T1); |
| |
| &pmuladd (sub { my ($reg,$i)=@_; |
| &pshufd ($reg,&QWP(16*$i,"edx"),0x10); |
| }); |
| |
| &set_label("short_tail"); |
| |
| &lazy_reduction (); |
| |
| ################################################################ |
| # horizontal addition |
| |
| &pshufd ($T1,$D0,0b01001110); |
| &pshufd ($T0,$D1,0b01001110); |
| &paddd ($D0,$T1); |
| &pshufd ($T1,$D2,0b01001110); |
| &paddd ($D1,$T0); |
| &pshufd ($T0,$D3,0b01001110); |
| &paddd ($D2,$T1); |
| &pshufd ($T1,$D4,0b01001110); |
| &paddd ($D3,$T0); |
| &paddd ($D4,$T1); |
| |
| &set_label("done"); |
| &movd (&DWP(-16*3+4*0,"edi"),$D0); # store hash value |
| &movd (&DWP(-16*3+4*1,"edi"),$D1); |
| &movd (&DWP(-16*3+4*2,"edi"),$D2); |
| &movd (&DWP(-16*3+4*3,"edi"),$D3); |
| &movd (&DWP(-16*3+4*4,"edi"),$D4); |
| &set_label("nodata"); |
| &mov ("esp","ebp"); |
| &function_end("_poly1305_blocks_sse2"); |
| |
| &align (32); |
| &function_begin("_poly1305_emit_sse2"); |
| &mov ("ebp",&wparam(0)); # context |
| |
| &cmp (&DWP(4*5,"ebp"),0); # is_base2_26? |
| &je (&label("enter_emit")); |
| |
| &mov ("eax",&DWP(4*0,"ebp")); # load hash value |
| &mov ("edi",&DWP(4*1,"ebp")); |
| &mov ("ecx",&DWP(4*2,"ebp")); |
| &mov ("edx",&DWP(4*3,"ebp")); |
| &mov ("esi",&DWP(4*4,"ebp")); |
| |
| &mov ("ebx","edi"); # base 2^26 -> base 2^32 |
| &shl ("edi",26); |
| &shr ("ebx",6); |
| &add ("eax","edi"); |
| &mov ("edi","ecx"); |
| &adc ("ebx",0); |
| |
| &shl ("edi",20); |
| &shr ("ecx",12); |
| &add ("ebx","edi"); |
| &mov ("edi","edx"); |
| &adc ("ecx",0); |
| |
| &shl ("edi",14); |
| &shr ("edx",18); |
| &add ("ecx","edi"); |
| &mov ("edi","esi"); |
| &adc ("edx",0); |
| |
| &shl ("edi",8); |
| &shr ("esi",24); |
| &add ("edx","edi"); |
| &adc ("esi",0); # can be partially reduced |
| |
| &mov ("edi","esi"); # final reduction |
| &and ("esi",3); |
| &shr ("edi",2); |
| &lea ("ebp",&DWP(0,"edi","edi",4)); # *5 |
| &mov ("edi",&wparam(1)); # output |
| add ("eax","ebp"); |
| &mov ("ebp",&wparam(2)); # key |
| adc ("ebx",0); |
| adc ("ecx",0); |
| adc ("edx",0); |
| |
| &movd ($D0,"eax"); # offload original hash value |
| &add ("eax",5); # compare to modulus |
| &movd ($D1,"ebx"); |
| &adc ("ebx",0); |
| &movd ($D2,"ecx"); |
| &adc ("ecx",0); |
| &movd ($D3,"edx"); |
| &adc ("edx",0); |
| &adc ("esi",0); |
| &shr ("esi",2); # did it carry/borrow? |
| |
| &neg ("esi"); # do we choose (hash-modulus) ... |
| &and ("eax","esi"); |
| &and ("ebx","esi"); |
| &and ("ecx","esi"); |
| &and ("edx","esi"); |
| &mov (&DWP(4*0,"edi"),"eax"); |
| &movd ("eax",$D0); |
| &mov (&DWP(4*1,"edi"),"ebx"); |
| &movd ("ebx",$D1); |
| &mov (&DWP(4*2,"edi"),"ecx"); |
| &movd ("ecx",$D2); |
| &mov (&DWP(4*3,"edi"),"edx"); |
| &movd ("edx",$D3); |
| |
| ¬ ("esi"); # ... or original hash value? |
| &and ("eax","esi"); |
| &and ("ebx","esi"); |
| &or ("eax",&DWP(4*0,"edi")); |
| &and ("ecx","esi"); |
| &or ("ebx",&DWP(4*1,"edi")); |
| &and ("edx","esi"); |
| &or ("ecx",&DWP(4*2,"edi")); |
| &or ("edx",&DWP(4*3,"edi")); |
| |
| &add ("eax",&DWP(4*0,"ebp")); # accumulate key |
| &adc ("ebx",&DWP(4*1,"ebp")); |
| &mov (&DWP(4*0,"edi"),"eax"); |
| &adc ("ecx",&DWP(4*2,"ebp")); |
| &mov (&DWP(4*1,"edi"),"ebx"); |
| &adc ("edx",&DWP(4*3,"ebp")); |
| &mov (&DWP(4*2,"edi"),"ecx"); |
| &mov (&DWP(4*3,"edi"),"edx"); |
| &function_end("_poly1305_emit_sse2"); |
| |
| if ($avx>1) { |
| ######################################################################## |
| # Note that poly1305_init_avx2 operates on %xmm, I could have used |
| # poly1305_init_sse2... |
| |
| &align (32); |
| &function_begin_B("_poly1305_init_avx2"); |
| &vmovdqu ($D4,&QWP(4*6,"edi")); # key base 2^32 |
| &lea ("edi",&DWP(16*3,"edi")); # size optimization |
| &mov ("ebp","esp"); |
| &sub ("esp",16*(9+5)); |
| &and ("esp",-16); |
| |
| #&vpand ($D4,$D4,&QWP(96,"ebx")); # magic mask |
| &vmovdqa ($MASK,&QWP(64,"ebx")); |
| |
| &vpand ($D0,$D4,$MASK); # -> base 2^26 |
| &vpsrlq ($D1,$D4,26); |
| &vpsrldq ($D3,$D4,6); |
| &vpand ($D1,$D1,$MASK); |
| &vpsrlq ($D2,$D3,4) |
| &vpsrlq ($D3,$D3,30); |
| &vpand ($D2,$D2,$MASK); |
| &vpand ($D3,$D3,$MASK); |
| &vpsrldq ($D4,$D4,13); |
| |
| &lea ("edx",&DWP(16*9,"esp")); # size optimization |
| &mov ("ecx",2); |
| &set_label("square"); |
| &vmovdqa (&QWP(16*0,"esp"),$D0); |
| &vmovdqa (&QWP(16*1,"esp"),$D1); |
| &vmovdqa (&QWP(16*2,"esp"),$D2); |
| &vmovdqa (&QWP(16*3,"esp"),$D3); |
| &vmovdqa (&QWP(16*4,"esp"),$D4); |
| |
| &vpslld ($T1,$D1,2); |
| &vpslld ($T0,$D2,2); |
| &vpaddd ($T1,$T1,$D1); # *5 |
| &vpaddd ($T0,$T0,$D2); # *5 |
| &vmovdqa (&QWP(16*5,"esp"),$T1); |
| &vmovdqa (&QWP(16*6,"esp"),$T0); |
| &vpslld ($T1,$D3,2); |
| &vpslld ($T0,$D4,2); |
| &vpaddd ($T1,$T1,$D3); # *5 |
| &vpaddd ($T0,$T0,$D4); # *5 |
| &vmovdqa (&QWP(16*7,"esp"),$T1); |
| &vmovdqa (&QWP(16*8,"esp"),$T0); |
| |
| &vpshufd ($T0,$D0,0b01000100); |
| &vmovdqa ($T1,$D1); |
| &vpshufd ($D1,$D1,0b01000100); |
| &vpshufd ($D2,$D2,0b01000100); |
| &vpshufd ($D3,$D3,0b01000100); |
| &vpshufd ($D4,$D4,0b01000100); |
| &vmovdqa (&QWP(16*0,"edx"),$T0); |
| &vmovdqa (&QWP(16*1,"edx"),$D1); |
| &vmovdqa (&QWP(16*2,"edx"),$D2); |
| &vmovdqa (&QWP(16*3,"edx"),$D3); |
| &vmovdqa (&QWP(16*4,"edx"),$D4); |
| |
| ################################################################ |
| # d4 = h4*r0 + h3*r1 + h2*r2 + h1*r3 + h0*r4 |
| # d3 = h3*r0 + h2*r1 + h1*r2 + h0*r3 + h4*5*r4 |
| # d2 = h2*r0 + h1*r1 + h0*r2 + h4*5*r3 + h3*5*r4 |
| # d1 = h1*r0 + h0*r1 + h4*5*r2 + h3*5*r3 + h2*5*r4 |
| # d0 = h0*r0 + h4*5*r1 + h3*5*r2 + h2*5*r3 + h1*5*r4 |
| |
| &vpmuludq ($D4,$D4,$D0); # h4*r0 |
| &vpmuludq ($D3,$D3,$D0); # h3*r0 |
| &vpmuludq ($D2,$D2,$D0); # h2*r0 |
| &vpmuludq ($D1,$D1,$D0); # h1*r0 |
| &vpmuludq ($D0,$T0,$D0); # h0*r0 |
| |
| &vpmuludq ($T0,$T1,&QWP(16*3,"edx")); # r1*h3 |
| &vpaddq ($D4,$D4,$T0); |
| &vpmuludq ($T2,$T1,&QWP(16*2,"edx")); # r1*h2 |
| &vpaddq ($D3,$D3,$T2); |
| &vpmuludq ($T0,$T1,&QWP(16*1,"edx")); # r1*h1 |
| &vpaddq ($D2,$D2,$T0); |
| &vmovdqa ($T2,&QWP(16*5,"esp")); # s1 |
| &vpmuludq ($T1,$T1,&QWP(16*0,"edx")); # r1*h0 |
| &vpaddq ($D1,$D1,$T1); |
| &vmovdqa ($T0,&QWP(16*2,"esp")); # r2 |
| &vpmuludq ($T2,$T2,&QWP(16*4,"edx")); # s1*h4 |
| &vpaddq ($D0,$D0,$T2); |
| |
| &vpmuludq ($T1,$T0,&QWP(16*2,"edx")); # r2*h2 |
| &vpaddq ($D4,$D4,$T1); |
| &vpmuludq ($T2,$T0,&QWP(16*1,"edx")); # r2*h1 |
| &vpaddq ($D3,$D3,$T2); |
| &vmovdqa ($T1,&QWP(16*6,"esp")); # s2 |
| &vpmuludq ($T0,$T0,&QWP(16*0,"edx")); # r2*h0 |
| &vpaddq ($D2,$D2,$T0); |
| &vpmuludq ($T2,$T1,&QWP(16*4,"edx")); # s2*h4 |
| &vpaddq ($D1,$D1,$T2); |
| &vmovdqa ($T0,&QWP(16*3,"esp")); # r3 |
| &vpmuludq ($T1,$T1,&QWP(16*3,"edx")); # s2*h3 |
| &vpaddq ($D0,$D0,$T1); |
| |
| &vpmuludq ($T2,$T0,&QWP(16*1,"edx")); # r3*h1 |
| &vpaddq ($D4,$D4,$T2); |
| &vmovdqa ($T1,&QWP(16*7,"esp")); # s3 |
| &vpmuludq ($T0,$T0,&QWP(16*0,"edx")); # r3*h0 |
| &vpaddq ($D3,$D3,$T0); |
| &vpmuludq ($T2,$T1,&QWP(16*4,"edx")); # s3*h4 |
| &vpaddq ($D2,$D2,$T2); |
| &vpmuludq ($T0,$T1,&QWP(16*3,"edx")); # s3*h3 |
| &vpaddq ($D1,$D1,$T0); |
| &vmovdqa ($T2,&QWP(16*4,"esp")); # r4 |
| &vpmuludq ($T1,$T1,&QWP(16*2,"edx")); # s3*h2 |
| &vpaddq ($D0,$D0,$T1); |
| |
| &vmovdqa ($T0,&QWP(16*8,"esp")); # s4 |
| &vpmuludq ($T2,$T2,&QWP(16*0,"edx")); # r4*h0 |
| &vpaddq ($D4,$D4,$T2); |
| &vpmuludq ($T1,$T0,&QWP(16*4,"edx")); # s4*h4 |
| &vpaddq ($D3,$D3,$T1); |
| &vpmuludq ($T2,$T0,&QWP(16*1,"edx")); # s4*h1 |
| &vpaddq ($D0,$D0,$T2); |
| &vpmuludq ($T1,$T0,&QWP(16*2,"edx")); # s4*h2 |
| &vpaddq ($D1,$D1,$T1); |
| &vmovdqa ($MASK,&QWP(64,"ebx")); |
| &vpmuludq ($T0,$T0,&QWP(16*3,"edx")); # s4*h3 |
| &vpaddq ($D2,$D2,$T0); |
| |
| ################################################################ |
| # lazy reduction |
| &vpsrlq ($T0,$D3,26); |
| &vpand ($D3,$D3,$MASK); |
| &vpsrlq ($T1,$D0,26); |
| &vpand ($D0,$D0,$MASK); |
| &vpaddq ($D4,$D4,$T0); # h3 -> h4 |
| &vpaddq ($D1,$D1,$T1); # h0 -> h1 |
| &vpsrlq ($T0,$D4,26); |
| &vpand ($D4,$D4,$MASK); |
| &vpsrlq ($T1,$D1,26); |
| &vpand ($D1,$D1,$MASK); |
| &vpaddq ($D2,$D2,$T1); # h1 -> h2 |
| &vpaddd ($D0,$D0,$T0); |
| &vpsllq ($T0,$T0,2); |
| &vpsrlq ($T1,$D2,26); |
| &vpand ($D2,$D2,$MASK); |
| &vpaddd ($D0,$D0,$T0); # h4 -> h0 |
| &vpaddd ($D3,$D3,$T1); # h2 -> h3 |
| &vpsrlq ($T1,$D3,26); |
| &vpsrlq ($T0,$D0,26); |
| &vpand ($D0,$D0,$MASK); |
| &vpand ($D3,$D3,$MASK); |
| &vpaddd ($D1,$D1,$T0); # h0 -> h1 |
| &vpaddd ($D4,$D4,$T1); # h3 -> h4 |
| |
| &dec ("ecx"); |
| &jz (&label("square_break")); |
| |
| &vpunpcklqdq ($D0,$D0,&QWP(16*0,"esp")); # 0:r^1:0:r^2 |
| &vpunpcklqdq ($D1,$D1,&QWP(16*1,"esp")); |
| &vpunpcklqdq ($D2,$D2,&QWP(16*2,"esp")); |
| &vpunpcklqdq ($D3,$D3,&QWP(16*3,"esp")); |
| &vpunpcklqdq ($D4,$D4,&QWP(16*4,"esp")); |
| &jmp (&label("square")); |
| |
| &set_label("square_break"); |
| &vpsllq ($D0,$D0,32); # -> r^3:0:r^4:0 |
| &vpsllq ($D1,$D1,32); |
| &vpsllq ($D2,$D2,32); |
| &vpsllq ($D3,$D3,32); |
| &vpsllq ($D4,$D4,32); |
| &vpor ($D0,$D0,&QWP(16*0,"esp")); # r^3:r^1:r^4:r^2 |
| &vpor ($D1,$D1,&QWP(16*1,"esp")); |
| &vpor ($D2,$D2,&QWP(16*2,"esp")); |
| &vpor ($D3,$D3,&QWP(16*3,"esp")); |
| &vpor ($D4,$D4,&QWP(16*4,"esp")); |
| |
| &vpshufd ($D0,$D0,0b10001101); # -> r^1:r^2:r^3:r^4 |
| &vpshufd ($D1,$D1,0b10001101); |
| &vpshufd ($D2,$D2,0b10001101); |
| &vpshufd ($D3,$D3,0b10001101); |
| &vpshufd ($D4,$D4,0b10001101); |
| |
| &vmovdqu (&QWP(16*0,"edi"),$D0); # save the table |
| &vmovdqu (&QWP(16*1,"edi"),$D1); |
| &vmovdqu (&QWP(16*2,"edi"),$D2); |
| &vmovdqu (&QWP(16*3,"edi"),$D3); |
| &vmovdqu (&QWP(16*4,"edi"),$D4); |
| |
| &vpslld ($T1,$D1,2); |
| &vpslld ($T0,$D2,2); |
| &vpaddd ($T1,$T1,$D1); # *5 |
| &vpaddd ($T0,$T0,$D2); # *5 |
| &vmovdqu (&QWP(16*5,"edi"),$T1); |
| &vmovdqu (&QWP(16*6,"edi"),$T0); |
| &vpslld ($T1,$D3,2); |
| &vpslld ($T0,$D4,2); |
| &vpaddd ($T1,$T1,$D3); # *5 |
| &vpaddd ($T0,$T0,$D4); # *5 |
| &vmovdqu (&QWP(16*7,"edi"),$T1); |
| &vmovdqu (&QWP(16*8,"edi"),$T0); |
| |
| &mov ("esp","ebp"); |
| &lea ("edi",&DWP(-16*3,"edi")); # size de-optimization |
| &ret (); |
| &function_end_B("_poly1305_init_avx2"); |
| |
| ######################################################################## |
| # now it's time to switch to %ymm |
| |
| my ($D0,$D1,$D2,$D3,$D4,$T0,$T1,$T2)=map("ymm$_",(0..7)); |
| my $MASK=$T2; |
| |
| sub X { my $reg=shift; $reg=~s/^ymm/xmm/; $reg; } |
| |
| &align (32); |
| &function_begin("_poly1305_blocks_avx2"); |
| &mov ("edi",&wparam(0)); # ctx |
| &mov ("esi",&wparam(1)); # inp |
| &mov ("ecx",&wparam(2)); # len |
| |
| &mov ("eax",&DWP(4*5,"edi")); # is_base2_26 |
| &and ("ecx",-16); |
| &jz (&label("nodata")); |
| &cmp ("ecx",64); |
| &jae (&label("enter_avx2")); |
| &test ("eax","eax"); # is_base2_26? |
| &jz (&label("enter_blocks")); |
| |
| &set_label("enter_avx2",16); |
| &vzeroupper (); |
| |
| &call (&label("pic_point")); |
| &set_label("pic_point"); |
| &blindpop("ebx"); |
| &lea ("ebx",&DWP(&label("const_sse2")."-".&label("pic_point"),"ebx")); |
| |
| &test ("eax","eax"); # is_base2_26? |
| &jnz (&label("base2_26")); |
| |
| &call ("_poly1305_init_avx2"); |
| |
| ################################################# base 2^32 -> base 2^26 |
| &mov ("eax",&DWP(0,"edi")); |
| &mov ("ecx",&DWP(3,"edi")); |
| &mov ("edx",&DWP(6,"edi")); |
| &mov ("esi",&DWP(9,"edi")); |
| &mov ("ebp",&DWP(13,"edi")); |
| |
| &shr ("ecx",2); |
| &and ("eax",0x3ffffff); |
| &shr ("edx",4); |
| &and ("ecx",0x3ffffff); |
| &shr ("esi",6); |
| &and ("edx",0x3ffffff); |
| |
| &mov (&DWP(4*0,"edi"),"eax"); |
| &mov (&DWP(4*1,"edi"),"ecx"); |
| &mov (&DWP(4*2,"edi"),"edx"); |
| &mov (&DWP(4*3,"edi"),"esi"); |
| &mov (&DWP(4*4,"edi"),"ebp"); |
| &mov (&DWP(4*5,"edi"),1); # is_base2_26 |
| |
| &mov ("esi",&wparam(1)); # [reload] inp |
| &mov ("ecx",&wparam(2)); # [reload] len |
| |
| &set_label("base2_26"); |
| &mov ("eax",&wparam(3)); # padbit |
| &mov ("ebp","esp"); |
| |
| &sub ("esp",32*(5+9)); |
| &and ("esp",-512); # ensure that frame |
| # doesn't cross page |
| # boundary, which is |
| # essential for |
| # misaligned 32-byte |
| # loads |
| |
| ################################################################ |
| # expand and copy pre-calculated table to stack |
| |
| &vmovdqu (&X($D0),&QWP(16*(3+0),"edi")); |
| &lea ("edx",&DWP(32*5+128,"esp")); # +128 size optimization |
| &vmovdqu (&X($D1),&QWP(16*(3+1),"edi")); |
| &vmovdqu (&X($D2),&QWP(16*(3+2),"edi")); |
| &vmovdqu (&X($D3),&QWP(16*(3+3),"edi")); |
| &vmovdqu (&X($D4),&QWP(16*(3+4),"edi")); |
| &lea ("edi",&DWP(16*3,"edi")); # size optimization |
| &vpermq ($D0,$D0,0b01000000); # 00001234 -> 12343434 |
| &vpermq ($D1,$D1,0b01000000); |
| &vpermq ($D2,$D2,0b01000000); |
| &vpermq ($D3,$D3,0b01000000); |
| &vpermq ($D4,$D4,0b01000000); |
| &vpshufd ($D0,$D0,0b11001000); # 12343434 -> 14243444 |
| &vpshufd ($D1,$D1,0b11001000); |
| &vpshufd ($D2,$D2,0b11001000); |
| &vpshufd ($D3,$D3,0b11001000); |
| &vpshufd ($D4,$D4,0b11001000); |
| &vmovdqa (&QWP(32*0-128,"edx"),$D0); |
| &vmovdqu (&X($D0),&QWP(16*5,"edi")); |
| &vmovdqa (&QWP(32*1-128,"edx"),$D1); |
| &vmovdqu (&X($D1),&QWP(16*6,"edi")); |
| &vmovdqa (&QWP(32*2-128,"edx"),$D2); |
| &vmovdqu (&X($D2),&QWP(16*7,"edi")); |
| &vmovdqa (&QWP(32*3-128,"edx"),$D3); |
| &vmovdqu (&X($D3),&QWP(16*8,"edi")); |
| &vmovdqa (&QWP(32*4-128,"edx"),$D4); |
| &vpermq ($D0,$D0,0b01000000); |
| &vpermq ($D1,$D1,0b01000000); |
| &vpermq ($D2,$D2,0b01000000); |
| &vpermq ($D3,$D3,0b01000000); |
| &vpshufd ($D0,$D0,0b11001000); |
| &vpshufd ($D1,$D1,0b11001000); |
| &vpshufd ($D2,$D2,0b11001000); |
| &vpshufd ($D3,$D3,0b11001000); |
| &vmovdqa (&QWP(32*5-128,"edx"),$D0); |
| &vmovd (&X($D0),&DWP(-16*3+4*0,"edi"));# load hash value |
| &vmovdqa (&QWP(32*6-128,"edx"),$D1); |
| &vmovd (&X($D1),&DWP(-16*3+4*1,"edi")); |
| &vmovdqa (&QWP(32*7-128,"edx"),$D2); |
| &vmovd (&X($D2),&DWP(-16*3+4*2,"edi")); |
| &vmovdqa (&QWP(32*8-128,"edx"),$D3); |
| &vmovd (&X($D3),&DWP(-16*3+4*3,"edi")); |
| &vmovd (&X($D4),&DWP(-16*3+4*4,"edi")); |
| &vmovdqa ($MASK,&QWP(64,"ebx")); |
| &neg ("eax"); # padbit |
| |
| &test ("ecx",63); |
| &jz (&label("even")); |
| |
| &mov ("edx","ecx"); |
| &and ("ecx",-64); |
| &and ("edx",63); |
| |
| &vmovdqu (&X($T0),&QWP(16*0,"esi")); |
| &cmp ("edx",32); |
| &jb (&label("one")); |
| |
| &vmovdqu (&X($T1),&QWP(16*1,"esi")); |
| &je (&label("two")); |
| |
| &vinserti128 ($T0,$T0,&QWP(16*2,"esi"),1); |
| &lea ("esi",&DWP(16*3,"esi")); |
| &lea ("ebx",&DWP(8,"ebx")); # three padbits |
| &lea ("edx",&DWP(32*5+128+8,"esp")); # --:r^1:r^2:r^3 (*) |
| &jmp (&label("tail")); |
| |
| &set_label("two"); |
| &lea ("esi",&DWP(16*2,"esi")); |
| &lea ("ebx",&DWP(16,"ebx")); # two padbits |
| &lea ("edx",&DWP(32*5+128+16,"esp"));# --:--:r^1:r^2 (*) |
| &jmp (&label("tail")); |
| |
| &set_label("one"); |
| &lea ("esi",&DWP(16*1,"esi")); |
| &vpxor ($T1,$T1,$T1); |
| &lea ("ebx",&DWP(32,"ebx","eax",8)); # one or no padbits |
| &lea ("edx",&DWP(32*5+128+24,"esp"));# --:--:--:r^1 (*) |
| &jmp (&label("tail")); |
| |
| # (*) spots marked with '--' are data from next table entry, but they |
| # are multiplied by 0 and therefore rendered insignificant |
| |
| &set_label("even",32); |
| &vmovdqu (&X($T0),&QWP(16*0,"esi")); # load input |
| &vmovdqu (&X($T1),&QWP(16*1,"esi")); |
| &vinserti128 ($T0,$T0,&QWP(16*2,"esi"),1); |
| &vinserti128 ($T1,$T1,&QWP(16*3,"esi"),1); |
| &lea ("esi",&DWP(16*4,"esi")); |
| &sub ("ecx",64); |
| &jz (&label("tail")); |
| |
| &set_label("loop"); |
| ################################################################ |
| # ((inp[0]*r^4+r[4])*r^4+r[8])*r^4 |
| # ((inp[1]*r^4+r[5])*r^4+r[9])*r^3 |
| # ((inp[2]*r^4+r[6])*r^4+r[10])*r^2 |
| # ((inp[3]*r^4+r[7])*r^4+r[11])*r^1 |
| # \________/ \_______/ |
| ################################################################ |
| |
| sub vsplat_input { |
| &vmovdqa (&QWP(32*2,"esp"),$D2); |
| &vpsrldq ($D2,$T0,6); # splat input |
| &vmovdqa (&QWP(32*0,"esp"),$D0); |
| &vpsrldq ($D0,$T1,6); |
| &vmovdqa (&QWP(32*1,"esp"),$D1); |
| &vpunpckhqdq ($D1,$T0,$T1); # 4 |
| &vpunpcklqdq ($T0,$T0,$T1); # 0:1 |
| &vpunpcklqdq ($D2,$D2,$D0); # 2:3 |
| |
| &vpsrlq ($D0,$D2,30); |
| &vpsrlq ($D2,$D2,4); |
| &vpsrlq ($T1,$T0,26); |
| &vpsrlq ($D1,$D1,40); # 4 |
| &vpand ($D2,$D2,$MASK); # 2 |
| &vpand ($T0,$T0,$MASK); # 0 |
| &vpand ($T1,$T1,$MASK); # 1 |
| &vpand ($D0,$D0,$MASK); # 3 (*) |
| &vpor ($D1,$D1,&QWP(0,"ebx")); # padbit, yes, always |
| |
| # (*) note that output is counterintuitive, inp[3:4] is |
| # returned in $D1-2, while $D3-4 are preserved; |
| } |
| &vsplat_input (); |
| |
| sub vpmuladd { |
| my $addr = shift; |
| |
| &vpaddq ($D2,$D2,&QWP(32*2,"esp")); # add hash value |
| &vpaddq ($T0,$T0,&QWP(32*0,"esp")); |
| &vpaddq ($T1,$T1,&QWP(32*1,"esp")); |
| &vpaddq ($D0,$D0,$D3); |
| &vpaddq ($D1,$D1,$D4); |
| |
| ################################################################ |
| # d3 = h2*r1 + h0*r3 + h1*r2 + h3*r0 + h4*5*r4 |
| # d4 = h2*r2 + h0*r4 + h1*r3 + h3*r1 + h4*r0 |
| # d0 = h2*5*r3 + h0*r0 + h1*5*r4 + h3*5*r2 + h4*5*r1 |
| # d1 = h2*5*r4 + h0*r1 + h1*r0 + h3*5*r3 + h4*5*r2 |
| # d2 = h2*r0 + h0*r2 + h1*r1 + h3*5*r4 + h4*5*r3 |
| |
| &vpmuludq ($D3,$D2,&$addr(1)); # d3 = h2*r1 |
| &vmovdqa (QWP(32*1,"esp"),$T1); |
| &vpmuludq ($D4,$D2,&$addr(2)); # d4 = h2*r2 |
| &vmovdqa (QWP(32*3,"esp"),$D0); |
| &vpmuludq ($D0,$D2,&$addr(7)); # d0 = h2*s3 |
| &vmovdqa (QWP(32*4,"esp"),$D1); |
| &vpmuludq ($D1,$D2,&$addr(8)); # d1 = h2*s4 |
| &vpmuludq ($D2,$D2,&$addr(0)); # d2 = h2*r0 |
| |
| &vpmuludq ($T2,$T0,&$addr(3)); # h0*r3 |
| &vpaddq ($D3,$D3,$T2); # d3 += h0*r3 |
| &vpmuludq ($T1,$T0,&$addr(4)); # h0*r4 |
| &vpaddq ($D4,$D4,$T1); # d4 + h0*r4 |
| &vpmuludq ($T2,$T0,&$addr(0)); # h0*r0 |
| &vpaddq ($D0,$D0,$T2); # d0 + h0*r0 |
| &vmovdqa ($T2,&QWP(32*1,"esp")); # h1 |
| &vpmuludq ($T1,$T0,&$addr(1)); # h0*r1 |
| &vpaddq ($D1,$D1,$T1); # d1 += h0*r1 |
| &vpmuludq ($T0,$T0,&$addr(2)); # h0*r2 |
| &vpaddq ($D2,$D2,$T0); # d2 += h0*r2 |
| |
| &vpmuludq ($T1,$T2,&$addr(2)); # h1*r2 |
| &vpaddq ($D3,$D3,$T1); # d3 += h1*r2 |
| &vpmuludq ($T0,$T2,&$addr(3)); # h1*r3 |
| &vpaddq ($D4,$D4,$T0); # d4 += h1*r3 |
| &vpmuludq ($T1,$T2,&$addr(8)); # h1*s4 |
| &vpaddq ($D0,$D0,$T1); # d0 += h1*s4 |
| &vmovdqa ($T1,&QWP(32*3,"esp")); # h3 |
| &vpmuludq ($T0,$T2,&$addr(0)); # h1*r0 |
| &vpaddq ($D1,$D1,$T0); # d1 += h1*r0 |
| &vpmuludq ($T2,$T2,&$addr(1)); # h1*r1 |
| &vpaddq ($D2,$D2,$T2); # d2 += h1*r1 |
| |
| &vpmuludq ($T0,$T1,&$addr(0)); # h3*r0 |
| &vpaddq ($D3,$D3,$T0); # d3 += h3*r0 |
| &vpmuludq ($T2,$T1,&$addr(1)); # h3*r1 |
| &vpaddq ($D4,$D4,$T2); # d4 += h3*r1 |
| &vpmuludq ($T0,$T1,&$addr(6)); # h3*s2 |
| &vpaddq ($D0,$D0,$T0); # d0 += h3*s2 |
| &vmovdqa ($T0,&QWP(32*4,"esp")); # h4 |
| &vpmuludq ($T2,$T1,&$addr(7)); # h3*s3 |
| &vpaddq ($D1,$D1,$T2); # d1+= h3*s3 |
| &vpmuludq ($T1,$T1,&$addr(8)); # h3*s4 |
| &vpaddq ($D2,$D2,$T1); # d2 += h3*s4 |
| |
| &vpmuludq ($T2,$T0,&$addr(8)); # h4*s4 |
| &vpaddq ($D3,$D3,$T2); # d3 += h4*s4 |
| &vpmuludq ($T1,$T0,&$addr(5)); # h4*s1 |
| &vpaddq ($D0,$D0,$T1); # d0 += h4*s1 |
| &vpmuludq ($T2,$T0,&$addr(0)); # h4*r0 |
| &vpaddq ($D4,$D4,$T2); # d4 += h4*r0 |
| &vmovdqa ($MASK,&QWP(64,"ebx")); |
| &vpmuludq ($T1,$T0,&$addr(6)); # h4*s2 |
| &vpaddq ($D1,$D1,$T1); # d1 += h4*s2 |
| &vpmuludq ($T0,$T0,&$addr(7)); # h4*s3 |
| &vpaddq ($D2,$D2,$T0); # d2 += h4*s3 |
| } |
| &vpmuladd (sub { my $i=shift; &QWP(32*$i-128,"edx"); }); |
| |
| sub vlazy_reduction { |
| ################################################################ |
| # lazy reduction |
| |
| &vpsrlq ($T0,$D3,26); |
| &vpand ($D3,$D3,$MASK); |
| &vpsrlq ($T1,$D0,26); |
| &vpand ($D0,$D0,$MASK); |
| &vpaddq ($D4,$D4,$T0); # h3 -> h4 |
| &vpaddq ($D1,$D1,$T1); # h0 -> h1 |
| &vpsrlq ($T0,$D4,26); |
| &vpand ($D4,$D4,$MASK); |
| &vpsrlq ($T1,$D1,26); |
| &vpand ($D1,$D1,$MASK); |
| &vpaddq ($D2,$D2,$T1); # h1 -> h2 |
| &vpaddd ($D0,$D0,$T0); |
| &vpsllq ($T0,$T0,2); |
| &vpsrlq ($T1,$D2,26); |
| &vpand ($D2,$D2,$MASK); |
| &vpaddd ($D0,$D0,$T0); # h4 -> h0 |
| &vpaddd ($D3,$D3,$T1); # h2 -> h3 |
| &vpsrlq ($T1,$D3,26); |
| &vpsrlq ($T0,$D0,26); |
| &vpand ($D0,$D0,$MASK); |
| &vpand ($D3,$D3,$MASK); |
| &vpaddd ($D1,$D1,$T0); # h0 -> h1 |
| &vpaddd ($D4,$D4,$T1); # h3 -> h4 |
| } |
| &vlazy_reduction(); |
| |
| &vmovdqu (&X($T0),&QWP(16*0,"esi")); # load input |
| &vmovdqu (&X($T1),&QWP(16*1,"esi")); |
| &vinserti128 ($T0,$T0,&QWP(16*2,"esi"),1); |
| &vinserti128 ($T1,$T1,&QWP(16*3,"esi"),1); |
| &lea ("esi",&DWP(16*4,"esi")); |
| &sub ("ecx",64); |
| &jnz (&label("loop")); |
| |
| &set_label("tail"); |
| &vsplat_input (); |
| &and ("ebx",-64); # restore pointer |
| |
| &vpmuladd (sub { my $i=shift; &QWP(4+32*$i-128,"edx"); }); |
| |
| &vlazy_reduction(); |
| |
| ################################################################ |
| # horizontal addition |
| |
| &vpsrldq ($T0,$D0,8); |
| &vpsrldq ($T1,$D1,8); |
| &vpaddq ($D0,$D0,$T0); |
| &vpsrldq ($T0,$D2,8); |
| &vpaddq ($D1,$D1,$T1); |
| &vpsrldq ($T1,$D3,8); |
| &vpaddq ($D2,$D2,$T0); |
| &vpsrldq ($T0,$D4,8); |
| &vpaddq ($D3,$D3,$T1); |
| &vpermq ($T1,$D0,2); # keep folding |
| &vpaddq ($D4,$D4,$T0); |
| &vpermq ($T0,$D1,2); |
| &vpaddq ($D0,$D0,$T1); |
| &vpermq ($T1,$D2,2); |
| &vpaddq ($D1,$D1,$T0); |
| &vpermq ($T0,$D3,2); |
| &vpaddq ($D2,$D2,$T1); |
| &vpermq ($T1,$D4,2); |
| &vpaddq ($D3,$D3,$T0); |
| &vpaddq ($D4,$D4,$T1); |
| |
| &cmp ("ecx",0); |
| &je (&label("done")); |
| |
| ################################################################ |
| # clear all but single word |
| |
| &vpshufd (&X($D0),&X($D0),0b11111100); |
| &lea ("edx",&DWP(32*5+128,"esp")); # restore pointer |
| &vpshufd (&X($D1),&X($D1),0b11111100); |
| &vpshufd (&X($D2),&X($D2),0b11111100); |
| &vpshufd (&X($D3),&X($D3),0b11111100); |
| &vpshufd (&X($D4),&X($D4),0b11111100); |
| &jmp (&label("even")); |
| |
| &set_label("done",16); |
| &vmovd (&DWP(-16*3+4*0,"edi"),"xmm0"); # store hash value |
| &vmovd (&DWP(-16*3+4*1,"edi"),"xmm1"); |
| &vmovd (&DWP(-16*3+4*2,"edi"),"xmm2"); |
| &vmovd (&DWP(-16*3+4*3,"edi"),"xmm3"); |
| &vmovd (&DWP(-16*3+4*4,"edi"),"xmm4"); |
| &vzeroupper (); |
| &set_label("nodata"); |
| &mov ("esp","ebp"); |
| &function_end("_poly1305_blocks_avx2"); |
| } |
| &set_label("const_sse2",64); |
| &data_word(1<<24,0, 1<<24,0, 1<<24,0, 1<<24,0); |
| &data_word(0,0, 0,0, 0,0, 0,0); |
| &data_word(0x03ffffff,0,0x03ffffff,0, 0x03ffffff,0, 0x03ffffff,0); |
| &data_word(0x0fffffff,0x0ffffffc,0x0ffffffc,0x0ffffffc); |
| } |
| &asciz ("Poly1305 for x86, CRYPTOGAMS by <appro\@openssl.org>"); |
| &align (4); |
| |
| &asm_finish(); |
