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提交 660164a9 编写于 作者: A Andy Polyakov
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sha512-586.pl: optimize SSE2 code path, +5-7% on most CPUs, +13% on AMD K8.

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crypto/sha/asm/sha512-586.pl
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#!/usr/bin/env perl
#
# ====================================================================
# Written by Andy Polyakov <appro@fy.chalmers.se> for the OpenSSL
# 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/.
......@@ -15,7 +15,7 @@
# gcc 75 116 54 66 58 126 121
# icc 77 95 55 57 - - -
# x86 asm 56 82 36 40 35 68 50
# SSE2 asm - 38 24 20 16 64(**) 18
# SSE2 asm - 36.2 20.8 19.2 14.9 60(**) 17.1
# x86_64 asm(*) - 33 9.6 10.3 11.3 14.7 13.5
#
# (*) x86_64 assembler performance is presented for reference
......@@ -67,72 +67,77 @@ $Hsse2=&QWP(56,"esp");
$A="mm0"; # B-D and
$E="mm4"; # F-H are commonly loaded to respectively mm1-mm3 and
# mm5-mm7, but it's done on on-demand basis...
$BxC="mm2"; # ... except for B^C
sub BODY_00_15_sse2 {
my $prefetch=shift;
my $phase=shift;
&movq ("mm5",$Fsse2); # load f
&movq ("mm6",$Gsse2); # load g
&movq ("mm7",$Hsse2); # load h
#&movq ("mm5",$Fsse2); # load f
#&movq ("mm6",$Gsse2); # load g
&movq ("mm1",$E); # %mm1 is sliding right
&movq ("mm2",$E); # %mm2 is sliding left
&pxor ("mm5","mm6"); # f^=g
&psrlq ("mm1",14);
&movq ($Esse2,$E); # modulo-scheduled save e
&psllq ("mm2",23);
&movq ($Esse2,$E); # modulo-scheduled save e
&pand ("mm5",$E); # f&=e
&psllq ($E,23); # $E is sliding left
&movq ($A,"mm3") if ($phase<2);
&movq (&QWP(8*9,"esp"),"mm7") if ($phase>1); # save X[i]
&movq ("mm3","mm1"); # %mm3 is T1
&psrlq ("mm1",4);
&pxor ("mm3","mm2");
&psllq ("mm2",23);
&psrlq ("mm1",4);
&pxor ("mm5","mm6"); # Ch(e,f,g)
&pxor ("mm3",$E);
&psllq ($E,23);
&pxor ("mm3","mm1");
&psrlq ("mm1",23);
&pxor ("mm3","mm2");
&psllq ("mm2",4);
&movq ($Asse2,$A); # modulo-scheduled save a
&paddq ("mm7","mm5"); # X[i]+=Ch(e,f,g)
&pxor ("mm3",$E);
&psrlq ("mm1",23);
&paddq ("mm7",$Hsse2); # X[i]+=h
&pxor ("mm3","mm1");
&paddq ("mm7",QWP(0,$K512)); # h+=K512[i]
&pxor ("mm3","mm2"); # T1=Sigma1_512(e)
&pxor ("mm5","mm6"); # f^=g
&psllq ($E,4);
&paddq ("mm7",QWP(0,$K512)); # X[i]+=K512[i]
&pxor ("mm3",$E); # T1=Sigma1_512(e)
&movq ($E,$Dsse2); # e = load d, e in next round
&movq ("mm5",$A); # %mm5 is sliding right
&paddq ("mm3","mm7"); # T1+=X[i]
&psrlq ("mm5",28);
&movq ("mm6",$A); # %mm6 is sliding left
&paddq ($E,"mm3"); # d += T1
&movq ("mm7","mm5");
&psllq ("mm6",25);
&movq ("mm1",$Bsse2); # load b
&pand ("mm5",$E); # f&=e
&movq ("mm2",$Csse2); # load c
&pxor ("mm5","mm6"); # f^=g
&movq ($E,$Dsse2); # e = load d
&paddq ("mm3","mm5"); # T1+=Ch(e,f,g)
&movq (&QWP(0,"esp"),$A); # modulo-scheduled save a
&paddq ("mm3","mm7"); # T1+=h
&movq ("mm5",$A); # %mm5 is sliding right
&movq ("mm6",$A); # %mm6 is sliding left
&paddq ("mm3",&QWP(8*9,"esp")); # T1+=X[0]
&psrlq ("mm5",28);
&paddq ($E,"mm3"); # e += T1
&psllq ("mm6",25);
&movq ("mm7","mm5"); # %mm7 is T2
&psrlq ("mm5",6);
&pxor ("mm7","mm6");
&psllq ("mm6",5);
&pxor ("mm7","mm5");
&psrlq ("mm5",5);
&pxor ("mm7","mm6");
&psllq ("mm6",6);
&pxor ("mm7","mm5");
&psrlq ("mm5",6);
&pxor ("mm7","mm6");
&sub ("esp",8);
&pxor ("mm7","mm6"); # T2=Sigma0_512(a)
&movq ("mm5",$A); # %mm5=a
&por ($A,"mm2"); # a=a|c
&movq ("mm6",&QWP(8*(9+16-14),"esp")) if ($prefetch);
&pand ("mm5","mm2"); # %mm5=a&c
&pand ($A,"mm1"); # a=(a|c)&b
&movq ("mm2",&QWP(8*(9+16-1),"esp")) if ($prefetch);
&por ("mm5",$A); # %mm5=(a&c)|((a|c)&b)
&paddq ("mm7","mm5"); # T2+=Maj(a,b,c)
&movq ($A,"mm3"); # a=T1
&mov (&LB("edx"),&BP(0,$K512));
&paddq ($A,"mm7"); # a+=T2
&add ($K512,8);
&psllq ("mm6",5);
&pxor ("mm7","mm5");
&pxor ($A,"mm1"); # a^b, b^c in next round
&psrlq ("mm5",5);
&pxor ("mm7","mm6");
&pand ($BxC,$A); # (b^c)&(a^b)
&psllq ("mm6",6);
&pxor ("mm7","mm5");
&pxor ($BxC,"mm1"); # [h=]Maj(a,b,c)
&pxor ("mm6","mm7"); # Sigma0_512(a)
&movq ("mm7",&QWP(8*(9+16-1),"esp")) if ($phase!=0); # pre-fetch
&movq ("mm5",$Fsse2) if ($phase==0); # load f
if ($phase>1) {
&paddq ($BxC,"mm6"); # h+=Sigma0(a)
&add ($K512,8);
#&paddq ($BxC,"mm3"); # h+=T1
($A,$BxC) = ($BxC,$A); # rotate registers
} else {
&paddq ("mm3",$BxC); # T1+=Maj(a,b,c)
&movq ($BxC,$A);
&add ($K512,8);
&paddq ("mm3","mm6"); # T1+=Sigma0(a)
&movq ("mm6",$Gsse2) if ($phase==0); # load g
#&movq ($A,"mm3"); # h=T1
}
}
sub BODY_00_15_x86 {
......@@ -291,7 +296,7 @@ if ($sse2) {
# load ctx->h[0-7]
&movq ($A,&QWP(0,"esi"));
&movq ("mm1",&QWP(8,"esi"));
&movq ("mm2",&QWP(16,"esi"));
&movq ($BxC,&QWP(16,"esi"));
&movq ("mm3",&QWP(24,"esi"));
&movq ($E,&QWP(32,"esi"));
&movq ("mm5",&QWP(40,"esi"));
......@@ -300,14 +305,16 @@ if ($sse2) {
&sub ("esp",8*10);
&set_label("loop_sse2",16);
# &movq ($Asse2,$A);
#&movq ($Asse2,$A);
&movq ($Bsse2,"mm1");
&movq ($Csse2,"mm2");
&movq ($Csse2,$BxC);
&movq ($Dsse2,"mm3");
# &movq ($Esse2,$E);
#&movq ($Esse2,$E);
&movq ($Fsse2,"mm5");
&movq ($Gsse2,"mm6");
&pxor ($BxC,"mm1"); # magic
&movq ($Hsse2,"mm7");
&movq ("mm3",$A); # magic
&mov ("ecx",&DWP(0,"edi"));
&mov ("edx",&DWP(4,"edi"));
......@@ -316,6 +323,7 @@ if ($sse2) {
&bswap ("edx");
&mov (&DWP(8*9+4,"esp"),"ecx");
&mov (&DWP(8*9+0,"esp"),"edx");
&mov ("edx",15); # counter
&jmp (&label("00_14_sse2"));
&set_label("00_14_sse2",16);
......@@ -323,96 +331,103 @@ if ($sse2) {
&mov ("ebx",&DWP(4,"edi"));
&add ("edi",8);
&bswap ("eax");
&movq ("mm7",&QWP(8*9,"esp")); # X[i]
&bswap ("ebx");
&mov (&DWP(8*8+4,"esp"),"eax");
&mov (&DWP(8*8+0,"esp"),"ebx");
&BODY_00_15_sse2();
&cmp (&LB("edx"),0x35);
&jne (&label("00_14_sse2"));
&BODY_00_15_sse2(1);
&set_label("16_79_sse2",16);
#&movq ("mm2",&QWP(8*(9+16-1),"esp")); #prefetched in BODY_00_15
#&movq ("mm6",&QWP(8*(9+16-14),"esp"));
&movq ("mm1","mm2");
&psrlq ("mm2",1);
&movq ("mm7","mm6");
&psrlq ("mm6",6);
&movq ("mm3","mm2");
&dec ("edx");
&jnz (&label("00_14_sse2"));
&psrlq ("mm2",7-1);
&movq ("mm5","mm6");
&psrlq ("mm6",19-6);
&pxor ("mm3","mm2");
&movq ("mm7",&QWP(8*9,"esp")); # X[i]
&psrlq ("mm2",8-7);
&pxor ("mm5","mm6");
&psrlq ("mm6",61-19);
&pxor ("mm3","mm2");
&BODY_00_15_sse2(1);
&movq ("mm2",&QWP(8*(9+16),"esp"));
&pxor ($A,$A); # A is in %mm3
&mov ("edx",32); # counter
&jmp (&label("16_79_sse2"));
&set_label("16_79_sse2",16);
for ($j=0;$j<2;$j++) { # 2x unroll
#&movq ("mm7",&QWP(8*(9+16-1),"esp")); # prefetched in BODY_00_15
&movq ("mm5",&QWP(8*(9+16-14),"esp"));
&movq ("mm1","mm7");
&psrlq ("mm7",1);
&movq ("mm6","mm5");
&psrlq ("mm5",6);
&psllq ("mm1",56);
&pxor ("mm5","mm6");
&psllq ("mm7",3);
&paddq ($A,"mm3"); # from BODY_00_15
&movq ("mm3","mm7");
&psrlq ("mm7",7-1);
&pxor ("mm3","mm1");
&psllq ("mm1",63-56);
&pxor ("mm3","mm7");
&psrlq ("mm7",8-7);
&pxor ("mm3","mm1");
&movq ("mm1","mm5");
&psrlq ("mm5",19-6);
&pxor ("mm7","mm3"); # sigma0
&psllq ("mm6",3);
&pxor ("mm1","mm5");
&paddq ("mm7",&QWP(8*(9+16),"esp"));
&pxor ("mm1","mm6");
&psrlq ("mm5",61-19);
&paddq ("mm7",&QWP(8*(9+16-9),"esp"));
&pxor ("mm1","mm5");
&psllq ("mm6",45-3);
&movq ("mm5",$Fsse2); # load f
&pxor ("mm1","mm6"); # sigma1
&movq ("mm6",$Gsse2); # load g
&paddq ("mm2",&QWP(8*(9+16-9),"esp"));
&psllq ("mm1",63-56);
&pxor ("mm5","mm7");
&psllq ("mm7",45-3);
&pxor ("mm3","mm1");
&pxor ("mm5","mm7");
&paddq ("mm3","mm5");
&paddq ("mm3","mm2");
&movq (&QWP(8*9,"esp"),"mm3");
&BODY_00_15_sse2(1);
&paddq ("mm7","mm1"); # X[i]
#&movq (&QWP(8*9,"esp"),"mm7"); # moved to BODY_00_15
&cmp (&LB("edx"),0x17);
&jne (&label("16_79_sse2"));
&BODY_00_15_sse2(2);
}
&dec ("edx");
&jnz (&label("16_79_sse2"));
# &movq ($A,$Asse2);
#&movq ($A,$Asse2);
&paddq ($A,"mm3"); # from BODY_00_15
&movq ("mm1",$Bsse2);
&movq ("mm2",$Csse2);
#&movq ($BxC,$Csse2);
&movq ("mm3",$Dsse2);
# &movq ($E,$Esse2);
#&movq ($E,$Esse2);
&movq ("mm5",$Fsse2);
&movq ("mm6",$Gsse2);
&movq ("mm7",$Hsse2);
&pxor ($BxC,"mm1"); # de-magic
&paddq ($A,&QWP(0,"esi"));
&paddq ("mm1",&QWP(8,"esi"));
&paddq ("mm2",&QWP(16,"esi"));
&paddq ($BxC,&QWP(16,"esi"));
&paddq ("mm3",&QWP(24,"esi"));
&paddq ($E,&QWP(32,"esi"));
&paddq ("mm5",&QWP(40,"esi"));
&paddq ("mm6",&QWP(48,"esi"));
&paddq ("mm7",&QWP(56,"esi"));
&mov ("eax",8*80);
&movq (&QWP(0,"esi"),$A);
&movq (&QWP(8,"esi"),"mm1");
&movq (&QWP(16,"esi"),"mm2");
&movq (&QWP(16,"esi"),$BxC);
&movq (&QWP(24,"esi"),"mm3");
&movq (&QWP(32,"esi"),$E);
&movq (&QWP(40,"esi"),"mm5");
&movq (&QWP(48,"esi"),"mm6");
&movq (&QWP(56,"esi"),"mm7");
&add ("esp",8*80); # destroy frame
&sub ($K512,8*80); # rewind K
&lea ("esp",&DWP(0,"esp","eax")); # destroy frame
&sub ($K512,"eax"); # rewind K
&cmp ("edi",&DWP(8*10+8,"esp")); # are we done yet?
&jb (&label("loop_sse2"));
&emms ();
&mov ("esp",&DWP(8*10+12,"esp")); # restore sp
&emms ();
&function_end_A();
}
&set_label("loop_x86",16);
......
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