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- #!/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";
-
- $output=pop;
- open STDOUT,">$output";
-
- &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 valgrind can't do AVX2 on 32-bit. Without a
- # way to verify test coverage, keep it disabled.
- $avx = 0;
- }
-
- ########################################################################
- # Layout of opaque area is following.
- #
- # unsigned __int32 h[5]; # current hash value base 2^32
- # unsigned __int32 pad; # is_base2_26 in vector context
- # unsigned __int32 r[4]; # key value base 2^32
-
- &align(64);
- &function_begin("poly1305_init");
- &mov ("edi",&wparam(0)); # context
- &mov ("esi",&wparam(1)); # key
- &mov ("ebp",&wparam(2)); # function table
-
- &xor ("eax","eax");
- &mov (&DWP(4*0,"edi"),"eax"); # zero hash value
- &mov (&DWP(4*1,"edi"),"eax");
- &mov (&DWP(4*2,"edi"),"eax");
- &mov (&DWP(4*3,"edi"),"eax");
- &mov (&DWP(4*4,"edi"),"eax");
- &mov (&DWP(4*5,"edi"),"eax"); # is_base2_26
-
- &cmp ("esi",0);
- &je (&label("nokey"));
-
- if ($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 {
- my $extra = shift;
- my $paddx = defined($extra) ? paddq : paddd;
-
- ################################################################
- # lazy reduction as discussed in "NEON crypto" by D.J. Bernstein
- # and P. Schwabe
-
- &movdqa ($T0,$D3);
- &pand ($D3,$MASK);
- &psrlq ($T0,26);
- &$extra () if (defined($extra));
- &paddq ($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
- &psllq ($T0,2);
- &paddq ($T1,$D2); # h1 -> h2
- &$paddx ($T0,$D0); # h4 -> h0
- &pand ($D1,$MASK);
- &movdqa ($D2,$T1);
- &psrlq ($T1,26);
- &pand ($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*$i,"edx"),0x10);
- });
-
- &set_label("short_tail");
-
- ################################################################
- # horizontal addition
-
- &pshufd ($T1,$D4,0b01001110);
- &pshufd ($T0,$D3,0b01001110);
- &paddq ($D4,$T1);
- &paddq ($D3,$T0);
- &pshufd ($T1,$D0,0b01001110);
- &pshufd ($T0,$D1,0b01001110);
- &paddq ($D0,$T1);
- &paddq ($D1,$T0);
- &pshufd ($T1,$D2,0b01001110);
- #&paddq ($D2,$T1);
-
- &lazy_reduction (sub { &paddq ($D2,$T1) });
-
- &set_label("done");
- &movd (&DWP(-16*3+4*0,"edi"),$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);
- &mov ("esp","ebp");
- &set_label("nodata");
- &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/; $reg; }
-
- &align (32);
- &function_begin("_poly1305_blocks_avx2");
- &mov ("edi",&wparam(0)); # ctx
- &mov ("esi",&wparam(1)); # inp
- &mov ("ecx",&wparam(2)); # len
-
- &mov ("eax",&DWP(4*5,"edi")); # is_base2_26
- &and ("ecx",-16);
- &jz (&label("nodata"));
- &cmp ("ecx",64);
- &jae (&label("enter_avx2"));
- &test ("eax","eax"); # is_base2_26?
- &jz (&label("enter_blocks"));
-
- &set_label("enter_avx2");
- &vzeroupper ();
-
- &call (&label("pic_point"));
- &set_label("pic_point");
- &blindpop("ebx");
- &lea ("ebx",&DWP(&label("const_sse2")."-".&label("pic_point"),"ebx"));
-
- &test ("eax","eax"); # is_base2_26?
- &jnz (&label("base2_26"));
-
- &call ("_poly1305_init_avx2");
-
- ################################################# base 2^32 -> base 2^26
- &mov ("eax",&DWP(0,"edi"));
- &mov ("ecx",&DWP(3,"edi"));
- &mov ("edx",&DWP(6,"edi"));
- &mov ("esi",&DWP(9,"edi"));
- &mov ("ebp",&DWP(13,"edi"));
-
- &shr ("ecx",2);
- &and ("eax",0x3ffffff);
- &shr ("edx",4);
- &and ("ecx",0x3ffffff);
- &shr ("esi",6);
- &and ("edx",0x3ffffff);
-
- &mov (&DWP(4*0,"edi"),"eax");
- &mov (&DWP(4*1,"edi"),"ecx");
- &mov (&DWP(4*2,"edi"),"edx");
- &mov (&DWP(4*3,"edi"),"esi");
- &mov (&DWP(4*4,"edi"),"ebp");
- &mov (&DWP(4*5,"edi"),1); # is_base2_26
-
- &mov ("esi",&wparam(1)); # [reload] inp
- &mov ("ecx",&wparam(2)); # [reload] len
-
- &set_label("base2_26");
- &mov ("eax",&wparam(3)); # padbit
- &mov ("ebp","esp");
-
- &sub ("esp",32*(5+9));
- &and ("esp",-512); # ensure that frame
- # doesn't cross page
- # boundary, which is
- # essential for
- # misaligned 32-byte
- # loads
-
- ################################################################
- # expand and copy pre-calculated table to stack
-
- &vmovdqu (&X($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,$T1); # h1 -> h2
- &vpaddq ($D0,$D0,$T0);
- &vpsllq ($T0,$T0,2);
- &vpsrlq ($T1,$D2,26);
- &vpand ($D2,$D2,$MASK);
- &vpaddq ($D0,$D0,$T0); # h4 -> h0
- &vpaddq ($D3,$D3,$T1); # h2 -> h3
- &vpsrlq ($T1,$D3,26);
- &vpsrlq ($T0,$D0,26);
- &vpand ($D0,$D0,$MASK);
- &vpand ($D3,$D3,$MASK);
- &vpaddq ($D1,$D1,$T0); # h0 -> h1
- &vpaddq ($D4,$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"); });
-
- ################################################################
- # horizontal addition
-
- &vpsrldq ($T0,$D4,8);
- &vpsrldq ($T1,$D3,8);
- &vpaddq ($D4,$D4,$T0);
- &vpsrldq ($T0,$D0,8);
- &vpaddq ($D3,$D3,$T1);
- &vpsrldq ($T1,$D1,8);
- &vpaddq ($D0,$D0,$T0);
- &vpsrldq ($T0,$D2,8);
- &vpaddq ($D1,$D1,$T1);
- &vpermq ($T1,$D4,2); # keep folding
- &vpaddq ($D2,$D2,$T0);
- &vpermq ($T0,$D3,2);
- &vpaddq ($D4,$D4,$T1);
- &vpermq ($T1,$D0,2);
- &vpaddq ($D3,$D3,$T0);
- &vpermq ($T0,$D1,2);
- &vpaddq ($D0,$D0,$T1);
- &vpermq ($T1,$D2,2);
- &vpaddq ($D1,$D1,$T0);
- &vpaddq ($D2,$D2,$T1);
-
- &vlazy_reduction();
-
- &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"),&X($D0));# store hash value
- &vmovd (&DWP(-16*3+4*1,"edi"),&X($D1));
- &vmovd (&DWP(-16*3+4*2,"edi"),&X($D2));
- &vmovd (&DWP(-16*3+4*3,"edi"),&X($D3));
- &vmovd (&DWP(-16*3+4*4,"edi"),&X($D4));
- &vzeroupper ();
- &mov ("esp","ebp");
- &set_label("nodata");
- &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();
-
- close STDOUT;
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