ghash-sparcv9.pl: 22% improvement on T4.
This commit is contained in:
Andy Polyakov
parent
5b0e3daf50
commit
24798c5e59
@ -41,8 +41,10 @@
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#
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# Add VIS3 lookup-table-free implementation using polynomial
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# multiplication xmulx[hi] and extended addition addxc[cc]
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# instructions. 3.96/6.26x improvement on T3/T4 or in absolute
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# terms 9.02/2.61 cycles per byte.
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# instructions. 4.22/7.63x improvement on T3/T4 or in absolute
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# terms 8.45/2.14 cycles per byte. On T4 multi-process benchmark
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# saturates at ~15x single-process result on 8-core processor, or
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# ~19.7GBps per 2.85GHz socket.
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$bits=32;
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for (@ARGV) { $bits=64 if (/\-m64/ || /\-xarch\=v9/); }
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@ -335,74 +337,103 @@ gcm_gmult_4bit:
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___
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{{{
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# Straightforward 64-bits-at-a-time approach with pair of 128x64-bit
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# multiplications followed by 64-bit reductions. While it might be
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# suboptimal with regard to sheer amount of multiplications, other
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# methods would require larger amount of 64-bit registers, which we
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# don't have in 32-bit application. Also, they [alternative methods
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# such as aggregated reduction] kind of thrive on fast 128-bit SIMD
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# instructions and these are not option on SPARC...
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# Straightforward 128x128-bit multiplication using Karatsuba algorithm
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# followed by pair of 64-bit reductions [with a shortcut in first one,
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# which allowed to break dependency between reductions and remove one
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# mulitplication from critical path]. While it might be suboptimal
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# with regard to sheer number of multiplications, other methods [such
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# as aggregate reduction] would require more 64-bit registers, which
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# we don't have in 32-bit application context.
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($Xip,$Htable,$inp,$len)=map("%i$_",(0..3));
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($xE1,$Hhi,$Hlo,$Rhi,$Rlo,$M0hi,$M0lo,$M1hi,$M1lo,$Zhi,$Zlo,$X)=
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(map("%g$_",(1..5)),map("%o$_",(0..5,7)));
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($shl,$shr)=map("%l$_",(0..7));
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($Hhl,$Hlo,$Hhi,$Xlo,$Xhi,$xE1,$x384, $C0,$C1,$C2,$C3,$V)=
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(map("%o$_",(0..5,7)),map("%g$_",(1..5)));
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($shl,$shr,$sqr)=map("%l$_",(0..7));
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# For details regarding "twisted H" see ghash-x86.pl.
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$code.=<<___;
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.globl gcm_init_vis3
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.align 32
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gcm_init_vis3:
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save %sp,-$frame,%sp
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ldx [%i1+0],$Hhi
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ldx [%i1+8],$Hlo
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mov 0xE1,$Xhi
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mov 1,$Xlo
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sllx $Xhi,57,$Xhi
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srax $Hhi,63,$C0 ! carry
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addcc $Hlo,$Hlo,$Hlo ! H<<=1
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addxc $Hhi,$Hhi,$Hhi
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and $Xlo,$C0,$Xlo
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and $Xhi,$C0,$Xhi
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xor $Xlo,$Hlo,$Hlo
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xor $Xhi,$Hhi,$Hhi
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stx $Hlo,[%i0+8] ! save twisted H
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stx $Hhi,[%i0+0]
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ret
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restore
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.type gcm_init_vis3,#function
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.size gcm_init_vis3,.-gcm_init_vis3
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.globl gcm_gmult_vis3
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.align 32
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gcm_gmult_vis3:
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save %sp,-$frame,%sp
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ldx [$Xip+8],$X ! load X.lo
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ldx [$Htable-8], $Hlo ! load H
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ldx [$Htable-16],$Hhi
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mov 0xE1,$xE1
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sllx $xE1,57,$xE1
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ldx [$Xip+8],$Xlo ! load Xi
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ldx [$Xip+0],$Xhi
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ldx [$Htable+8],$Hlo ! load twisted H
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ldx [$Htable+0],$Hhi
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xmulx $X,$Hlo,$M0lo ! H·X.lo
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xmulxhi $X,$Hlo,$M0hi
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xmulx $X,$Hhi,$M1lo
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xmulxhi $X,$Hhi,$M1hi
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ldx [$Xip+0],$X ! load X.hi
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sethi %hi(0xA0406080),$V
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sethi %hi(0x20C0E000),%l0
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or $V,%lo(0xA0406080),$V
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or %l0,%lo(0x20C0E000),%l0
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sllx $V,32,$V
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mov 0xE1,%l1
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or %l0,$V,$V ! (0xE0·i)&0xff=0xA040608020C0E000
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sllx %l1,57,$xE1 ! 57 is not a typo
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sllx %l1,50,$x384
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xor $Hhi,$Hlo,$Hhl ! Karatsuba pre-processing
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addcc $M0lo,$M0lo,$M0lo ! (H·X.lo)<<1
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xor $M0hi,$M1lo,$M1lo
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xmulx $Xlo,$Hlo,$C0
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xor $Xlo,$Xhi,$C2 ! Karatsuba pre-processing
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xmulx $C2,$Hhl,$C1
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xmulxhi $Xlo,$Hlo,$Xlo
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xmulxhi $C2,$Hhl,$C2
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xmulxhi $Xhi,$Hhi,$C3
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xmulx $Xhi,$Hhi,$Xhi
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xmulx $xE1,$M0lo,$Rlo ! res=Z.lo·(0xE1<<57)
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xmulxhi $xE1,$M0lo,$Rhi
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sll $C0,3,$sqr
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srlx $V,$sqr,$sqr ! ·0xE0 [implicit &(7<<3)]
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xor $C0,$sqr,$sqr
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and $sqr,0x7f,$sqr
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addxccc $M1lo,$M1lo,$Zlo ! Z=((H·X.lo)<<1)>>64
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addxc $M1hi,$M1hi,$Zhi
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xor $M0lo,$Zhi,$Zhi ! overflow bit from 0xE1<<57
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xor $C0,$C1,$C1 ! Karatsuba post-processing
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xor $Xlo,$C2,$C2
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xor $Xhi,$C1,$C1
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xor $C3,$C2,$C2
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xor $Xlo,$C1,$C1
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xmulx $X,$Hlo,$M0lo ! H·X.hi
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xmulxhi $X,$Hlo,$M0hi
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xmulx $X,$Hhi,$M1lo
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xmulxhi $X,$Hhi,$M1hi
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xmulxhi $C0,$xE1,$Xlo ! ·0xE1<<1<<56
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xor $Xhi,$C2,$C2
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xmulx $sqr,$x384,$Xhi ! ·0xE1<<2<<48
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xor $C0,$C2,$C2
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xmulx $C1,$xE1,$C0
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xor $C1,$C3,$C3
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xmulxhi $C1,$xE1,$C1
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xor $Rlo,$Zlo,$Zlo ! Z^=res
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xor $Rhi,$Zhi,$Zhi
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xor $Xlo,$C2,$C2
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xor $Xhi,$C3,$C3
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xor $C0,$C2,$C2
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xor $C1,$C3,$C3
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addcc $M0lo,$M0lo,$M0lo ! (H·X.lo)<<1
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xor $Zlo, $M0lo,$M0lo
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xor $M0hi,$M1lo,$M1lo
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xmulx $xE1,$M0lo,$Rlo ! res=Z.lo·(0xE1<<57)
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xmulxhi $xE1,$M0lo,$Rhi
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addxccc $M1lo,$M1lo,$M1lo
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addxc $M1hi,$M1hi,$M1hi
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xor $M1lo,$Zhi,$Zlo ! Z=(Z^(H·X.hi)<<1)>>64
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xor $M0lo,$M1hi,$Zhi ! overflow bit from 0xE1<<57
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xor $Rlo,$Zlo,$Zlo ! Z^=res
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xor $Rhi,$Zhi,$Zhi
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stx $Zlo,[$Xip+8] ! save Xi
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stx $Zhi,[$Xip+0]
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stx $C2,[$Xip+8] ! save Xi
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stx $C3,[$Xip+0]
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ret
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restore
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@ -414,80 +445,83 @@ gcm_gmult_vis3:
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gcm_ghash_vis3:
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save %sp,-$frame,%sp
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ldx [$Xip+0],$Zhi ! load X.hi
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ldx [$Xip+8],$Zlo ! load X.lo
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ldx [$Xip+8],$C2 ! load Xi
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ldx [$Xip+0],$C3
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ldx [$Htable+8],$Hlo ! load twisted H
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ldx [$Htable+0],$Hhi
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sethi %hi(0xA0406080),$V
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sethi %hi(0x20C0E000),%l6
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or $V,%lo(0xA0406080),$V
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or %l6,%lo(0x20C0E000),%l6
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sllx $V,32,$V
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mov 0xE1,%l7
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or %l6,$V,$V ! (0xE0·i)&0xff=0xA040608020C0E000
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sllx %l7,57,$xE1 ! 57 is not a typo
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sllx %l7,50,$x384
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and $inp,7,$shl
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andn $inp,7,$inp
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ldx [$Htable-8], $Hlo ! load H
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ldx [$Htable-16],$Hhi
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sll $shl,3,$shl
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prefetch [$inp+63], 20
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mov 0xE1,$xE1
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sub %g0,$shl,$shr
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sllx $xE1,57,$xE1
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xor $Hhi,$Hlo,$Hhl ! Karatsuba pre-processing
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.Loop:
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ldx [$inp+8],$Rlo ! load *inp
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ldx [$inp+8],$Xlo
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brz,pt $shl,1f
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ldx [$inp+0],$Rhi
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ldx [$inp+16],$X ! align data
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srlx $Rlo,$shr,$M0lo
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sllx $Rlo,$shl,$Rlo
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sllx $Rhi,$shl,$Rhi
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srlx $X,$shr,$X
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or $M0lo,$Rhi,$Rhi
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or $X,$Rlo,$Rlo
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ldx [$inp+0],$Xhi
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ldx [$inp+16],$C1 ! align data
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srlx $Xlo,$shr,$C0
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sllx $Xlo,$shl,$Xlo
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sllx $Xhi,$shl,$Xhi
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srlx $C1,$shr,$C1
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or $C0,$Xhi,$Xhi
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or $C1,$Xlo,$Xlo
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1:
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add $inp,16,$inp
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sub $len,16,$len
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xor $Rlo,$Zlo,$X
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xor $C2,$Xlo,$Xlo
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xor $C3,$Xhi,$Xhi
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prefetch [$inp+63], 20
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xmulx $X,$Hlo,$M0lo ! H·X.lo
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xmulxhi $X,$Hlo,$M0hi
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xmulx $X,$Hhi,$M1lo
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xmulxhi $X,$Hhi,$M1hi
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xor $Rhi,$Zhi,$X
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xmulx $Xlo,$Hlo,$C0
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xor $Xlo,$Xhi,$C2 ! Karatsuba pre-processing
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xmulx $C2,$Hhl,$C1
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xmulxhi $Xlo,$Hlo,$Xlo
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xmulxhi $C2,$Hhl,$C2
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xmulxhi $Xhi,$Hhi,$C3
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xmulx $Xhi,$Hhi,$Xhi
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addcc $M0lo,$M0lo,$M0lo ! (H·X.lo)<<1
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xor $M0hi,$M1lo,$M1lo
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sll $C0,3,$sqr
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srlx $V,$sqr,$sqr ! ·0xE0 [implicit &(7<<3)]
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xor $C0,$sqr,$sqr
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and $sqr,0x7f,$sqr
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xmulx $xE1,$M0lo,$Rlo ! res=Z.lo·(0xE1<<57)
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xmulxhi $xE1,$M0lo,$Rhi
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xor $C0,$C1,$C1 ! Karatsuba post-processing
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xor $Xlo,$C2,$C2
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xor $Xhi,$C1,$C1
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xor $C3,$C2,$C2
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xor $Xlo,$C1,$C1
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addxccc $M1lo,$M1lo,$Zlo ! Z=((H·X.lo)<<1)>>64
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addxc $M1hi,$M1hi,$Zhi
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xor $M0lo,$Zhi,$Zhi ! overflow bit from 0xE1<<57
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xmulxhi $C0,$xE1,$Xlo ! ·0xE1<<1<<56
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xor $Xhi,$C2,$C2
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xmulx $sqr,$x384,$Xhi ! ·0xE1<<2<<48
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xor $C0,$C2,$C2
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xmulx $C1,$xE1,$C0
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xor $C1,$C3,$C3
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xmulxhi $C1,$xE1,$C1
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xmulx $X,$Hlo,$M0lo ! H·X.hi
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xmulxhi $X,$Hlo,$M0hi
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xmulx $X,$Hhi,$M1lo
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xmulxhi $X,$Hhi,$M1hi
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xor $Rlo,$Zlo,$Zlo ! Z^=res
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xor $Rhi,$Zhi,$Zhi
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addcc $M0lo,$M0lo,$M0lo ! (H·X.lo)<<1
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xor $Zlo, $M0lo,$M0lo
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xor $M0hi,$M1lo,$M1lo
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xmulx $xE1,$M0lo,$Rlo ! res=Z.lo·(0xE1<<57)
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xmulxhi $xE1,$M0lo,$Rhi
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addxccc $M1lo,$M1lo,$M1lo
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addxc $M1hi,$M1hi,$M1hi
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xor $M1lo,$Zhi,$Zlo ! Z=(Z^(H·X.hi)<<1)>>64
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xor $M0lo,$M1hi,$Zhi ! overflow bit from 0xE1<<57
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xor $Rlo,$Zlo,$Zlo ! Z^=res
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xor $Xlo,$C2,$C2
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xor $Xhi,$C3,$C3
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xor $C0,$C2,$C2
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brnz,pt $len,.Loop
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xor $Rhi,$Zhi,$Zhi
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xor $C1,$C3,$C3
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stx $Zlo,[$Xip+8] ! save Xi
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stx $Zhi,[$Xip+0]
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stx $C2,[$Xip+8] ! save Xi
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stx $C3,[$Xip+0]
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ret
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restore
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@ -679,6 +679,7 @@ void gcm_ghash_neon(u64 Xi[2],const u128 Htable[16],const u8 *inp,size_t len);
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# define GHASH_ASM_SPARC
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# define GCM_FUNCREF_4BIT
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extern unsigned int OPENSSL_sparcv9cap_P[];
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void gcm_init_vis3(u128 Htable[16],const u64 Xi[2]);
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void gcm_gmult_vis3(u64 Xi[2],const u128 Htable[16]);
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void gcm_ghash_vis3(u64 Xi[2],const u128 Htable[16],const u8 *inp,size_t len);
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# endif
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@ -759,6 +760,7 @@ void CRYPTO_gcm128_init(GCM128_CONTEXT *ctx,void *key,block128_f block)
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}
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# elif defined(GHASH_ASM_SPARC)
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if (OPENSSL_sparcv9cap_P[0] & SPARCV9_VIS3) {
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gcm_init_vis3(ctx->Htable,ctx->H.u);
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ctx->gmult = gcm_gmult_vis3;
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ctx->ghash = gcm_ghash_vis3;
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} else {
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