mirror of https://github.com/openssl/openssl.git
chacha/asm/chacha-armv8.pl: replace 3+1 code paths with 4+1.
The change is triggered by ThunderX2 where 3+1 was slower than scalar code path, but it helps all processors [to handle <512 inputs]. Reviewed-by: Tim Hudson <tjh@openssl.org> Reviewed-by: Richard Levitte <levitte@openssl.org> (Merged from https://github.com/openssl/openssl/pull/8776)
This commit is contained in:
Andy Polyakov
parent
d6e4287c97
commit
86a7ac5e76
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@ -18,23 +18,31 @@
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#
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# ChaCha20 for ARMv8.
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#
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# April 2019
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#
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# Replace 3xNEON+1xIALU code path with 4+1. 4+1 is actually fastest
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# option on most(*), but not all, processors, yet 6+2 is retained.
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# This is because penalties are considered tolerable in comparison to
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# improvement on processors where 6+2 helps. Most notably +37% on
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# ThunderX2. It's server-oriented processor which will have to serve
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# as many requests as possible. While others are mostly clients, when
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# performance doesn't have to be absolute top-notch, just fast enough,
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# as majority of time is spent "entertaining" relatively slow human.
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#
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# Performance in cycles per byte out of large buffer.
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#
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# IALU/gcc-4.9 3xNEON+1xIALU 6xNEON+2xIALU
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# IALU/gcc-4.9 4xNEON+1xIALU 6xNEON+2xIALU
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#
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# Apple A7 5.50/+49% 3.33 1.70
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# Cortex-A53 8.40/+80% 4.72 4.72(*)
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# Cortex-A57 8.06/+43% 4.90 4.43(**)
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# Denver 4.50/+82% 2.63 2.67(*)
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# X-Gene 9.50/+46% 8.82 8.89(*)
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# Mongoose 8.00/+44% 3.64 3.25
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# Kryo 8.17/+50% 4.83 4.65
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# ThunderX2 7.26/+48% 7.91 4.30
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# Apple A7 5.50/+49% 2.72 1.60
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# Cortex-A53 8.40/+80% 4.06 4.45(*)
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# Cortex-A57 8.06/+43% 4.15 4.40(*)
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# Denver 4.50/+82% 2.30 2.70(*)
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# X-Gene 9.50/+46% 8.20 8.90(*)
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# Mongoose 8.00/+44% 2.74 3.12(*)
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# Kryo 8.17/+50% 4.47 4.65(*)
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# ThunderX2 7.22/+48% 5.64 4.10
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#
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# (*) it's expected that doubling interleave factor doesn't help
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# all processors, only those with higher NEON latency and
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# higher instruction issue rate;
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# (**) expected improvement was actually higher;
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# (*) slower than 4+1:-(
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$flavour=shift;
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$output=shift;
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@ -121,18 +129,21 @@ my ($a3,$b3,$c3,$d3)=map(($_&~3)+(($_+1)&3),($a2,$b2,$c2,$d2));
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}
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$code.=<<___;
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#include "arm_arch.h"
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#ifndef __KERNEL__
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# include "arm_arch.h"
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.extern OPENSSL_armcap_P
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#endif
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.text
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.extern OPENSSL_armcap_P
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.align 5
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.Lsigma:
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.quad 0x3320646e61707865,0x6b20657479622d32 // endian-neutral
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.Lone:
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.long 1,0,0,0
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.asciz "ChaCha20 for ARMv8, CRYPTOGAMS by <appro\@openssl.org>"
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.long 1,2,3,4
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.Lrot24:
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.long 0x02010003,0x06050407,0x0a09080b,0x0e0d0c0f
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.asciz "ChaCha20 for ARMv8, CRYPTOGAMS by \@dot-asm"
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.globl ChaCha20_ctr32
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.type ChaCha20_ctr32,%function
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@ -142,10 +153,12 @@ ChaCha20_ctr32:
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cmp $len,#192
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b.lo .Lshort
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#ifndef __KERNEL__
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adrp x17,OPENSSL_armcap_P
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ldr w17,[x17,#:lo12:OPENSSL_armcap_P]
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tst w17,#ARMV7_NEON
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b.ne .LChaCha20_neon
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#endif
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.Lshort:
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.inst 0xd503233f // paciasp
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@ -164,7 +177,7 @@ ChaCha20_ctr32:
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ldp @d[2],@d[3],[$key] // load key
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ldp @d[4],@d[5],[$key,#16]
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ldp @d[6],@d[7],[$ctr] // load counter
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#ifdef __ARMEB__
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#ifdef __AARCH64EB__
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ror @d[2],@d[2],#32
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ror @d[3],@d[3],#32
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ror @d[4],@d[4],#32
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@ -233,7 +246,7 @@ $code.=<<___;
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add @x[14],@x[14],@x[15],lsl#32
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ldp @x[13],@x[15],[$inp,#48]
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add $inp,$inp,#64
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#ifdef __ARMEB__
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#ifdef __AARCH64EB__
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rev @x[0],@x[0]
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rev @x[2],@x[2]
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rev @x[4],@x[4]
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@ -290,7 +303,7 @@ $code.=<<___;
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add @x[10],@x[10],@x[11],lsl#32
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add @x[12],@x[12],@x[13],lsl#32
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add @x[14],@x[14],@x[15],lsl#32
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#ifdef __ARMEB__
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#ifdef __AARCH64EB__
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rev @x[0],@x[0]
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rev @x[2],@x[2]
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rev @x[4],@x[4]
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@ -331,43 +344,87 @@ $code.=<<___;
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___
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{{{
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my ($A0,$B0,$C0,$D0,$A1,$B1,$C1,$D1,$A2,$B2,$C2,$D2,$T0,$T1,$T2,$T3) =
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map("v$_.4s",(0..7,16..23));
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my (@K)=map("v$_.4s",(24..30));
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my $ONE="v31.4s";
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my @K = map("v$_.4s",(0..3));
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my ($xt0,$xt1,$xt2,$xt3, $CTR,$ROT24) = map("v$_.4s",(4..9));
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my @X = map("v$_.4s",(16,20,24,28, 17,21,25,29, 18,22,26,30, 19,23,27,31));
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my ($xa0,$xa1,$xa2,$xa3, $xb0,$xb1,$xb2,$xb3,
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$xc0,$xc1,$xc2,$xc3, $xd0,$xd1,$xd2,$xd3) = @X;
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sub NEONROUND {
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my $odd = pop;
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my ($a,$b,$c,$d,$t)=@_;
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sub NEON_lane_ROUND {
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my ($a0,$b0,$c0,$d0)=@_;
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my ($a1,$b1,$c1,$d1)=map(($_&~3)+(($_+1)&3),($a0,$b0,$c0,$d0));
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my ($a2,$b2,$c2,$d2)=map(($_&~3)+(($_+1)&3),($a1,$b1,$c1,$d1));
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my ($a3,$b3,$c3,$d3)=map(($_&~3)+(($_+1)&3),($a2,$b2,$c2,$d2));
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my @x=map("'$_'",@X);
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(
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"&add ('$a','$a','$b')",
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"&eor ('$d','$d','$a')",
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"&rev32_16 ('$d','$d')", # vrot ($d,16)
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"&add (@x[$a0],@x[$a0],@x[$b0])", # Q1
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"&add (@x[$a1],@x[$a1],@x[$b1])", # Q2
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"&add (@x[$a2],@x[$a2],@x[$b2])", # Q3
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"&add (@x[$a3],@x[$a3],@x[$b3])", # Q4
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"&eor (@x[$d0],@x[$d0],@x[$a0])",
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"&eor (@x[$d1],@x[$d1],@x[$a1])",
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"&eor (@x[$d2],@x[$d2],@x[$a2])",
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"&eor (@x[$d3],@x[$d3],@x[$a3])",
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"&rev32_16 (@x[$d0],@x[$d0])",
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"&rev32_16 (@x[$d1],@x[$d1])",
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"&rev32_16 (@x[$d2],@x[$d2])",
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"&rev32_16 (@x[$d3],@x[$d3])",
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"&add ('$c','$c','$d')",
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"&eor ('$t','$b','$c')",
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"&ushr ('$b','$t',20)",
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"&sli ('$b','$t',12)",
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"&add (@x[$c0],@x[$c0],@x[$d0])",
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"&add (@x[$c1],@x[$c1],@x[$d1])",
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"&add (@x[$c2],@x[$c2],@x[$d2])",
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"&add (@x[$c3],@x[$c3],@x[$d3])",
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"&eor ('$xt0',@x[$b0],@x[$c0])",
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"&eor ('$xt1',@x[$b1],@x[$c1])",
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"&eor ('$xt2',@x[$b2],@x[$c2])",
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"&eor ('$xt3',@x[$b3],@x[$c3])",
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"&ushr (@x[$b0],'$xt0',20)",
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"&ushr (@x[$b1],'$xt1',20)",
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"&ushr (@x[$b2],'$xt2',20)",
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"&ushr (@x[$b3],'$xt3',20)",
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"&sli (@x[$b0],'$xt0',12)",
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"&sli (@x[$b1],'$xt1',12)",
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"&sli (@x[$b2],'$xt2',12)",
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"&sli (@x[$b3],'$xt3',12)",
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"&add ('$a','$a','$b')",
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"&eor ('$t','$d','$a')",
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"&ushr ('$d','$t',24)",
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"&sli ('$d','$t',8)",
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"&add (@x[$a0],@x[$a0],@x[$b0])",
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"&add (@x[$a1],@x[$a1],@x[$b1])",
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"&add (@x[$a2],@x[$a2],@x[$b2])",
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"&add (@x[$a3],@x[$a3],@x[$b3])",
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"&eor ('$xt0',@x[$d0],@x[$a0])",
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"&eor ('$xt1',@x[$d1],@x[$a1])",
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"&eor ('$xt2',@x[$d2],@x[$a2])",
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"&eor ('$xt3',@x[$d3],@x[$a3])",
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"&tbl (@x[$d0],'{$xt0}','$ROT24')",
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"&tbl (@x[$d1],'{$xt1}','$ROT24')",
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"&tbl (@x[$d2],'{$xt2}','$ROT24')",
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"&tbl (@x[$d3],'{$xt3}','$ROT24')",
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"&add ('$c','$c','$d')",
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"&eor ('$t','$b','$c')",
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"&ushr ('$b','$t',25)",
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"&sli ('$b','$t',7)",
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"&ext ('$c','$c','$c',8)",
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"&ext ('$d','$d','$d',$odd?4:12)",
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"&ext ('$b','$b','$b',$odd?12:4)"
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"&add (@x[$c0],@x[$c0],@x[$d0])",
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"&add (@x[$c1],@x[$c1],@x[$d1])",
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"&add (@x[$c2],@x[$c2],@x[$d2])",
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"&add (@x[$c3],@x[$c3],@x[$d3])",
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"&eor ('$xt0',@x[$b0],@x[$c0])",
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"&eor ('$xt1',@x[$b1],@x[$c1])",
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"&eor ('$xt2',@x[$b2],@x[$c2])",
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"&eor ('$xt3',@x[$b3],@x[$c3])",
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"&ushr (@x[$b0],'$xt0',25)",
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"&ushr (@x[$b1],'$xt1',25)",
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"&ushr (@x[$b2],'$xt2',25)",
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"&ushr (@x[$b3],'$xt3',25)",
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"&sli (@x[$b0],'$xt0',7)",
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"&sli (@x[$b1],'$xt1',7)",
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"&sli (@x[$b2],'$xt2',7)",
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"&sli (@x[$b3],'$xt3',7)"
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);
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}
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$code.=<<___;
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#ifdef __KERNEL__
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.globl ChaCha20_neon
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#endif
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.type ChaCha20_neon,%function
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.align 5
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ChaCha20_neon:
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@ -394,8 +451,9 @@ ChaCha20_neon:
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ld1 {@K[1],@K[2]},[$key]
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ldp @d[6],@d[7],[$ctr] // load counter
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ld1 {@K[3]},[$ctr]
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ld1 {$ONE},[@x[0]]
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#ifdef __ARMEB__
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stp d8,d9,[sp] // meet ABI requirements
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ld1 {$CTR,$ROT24},[@x[0]]
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#ifdef __AARCH64EB__
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rev64 @K[0],@K[0]
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ror @d[2],@d[2],#32
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ror @d[3],@d[3],#32
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@ -404,115 +462,129 @@ ChaCha20_neon:
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ror @d[6],@d[6],#32
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ror @d[7],@d[7],#32
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#endif
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add @K[3],@K[3],$ONE // += 1
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add @K[4],@K[3],$ONE
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add @K[5],@K[4],$ONE
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shl $ONE,$ONE,#2 // 1 -> 4
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.Loop_outer_neon:
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mov.32 @x[0],@d[0] // unpack key block
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dup $xa0,@{K[0]}[0] // unpack key block
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mov.32 @x[0],@d[0]
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dup $xa1,@{K[0]}[1]
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lsr @x[1],@d[0],#32
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mov $A0,@K[0]
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dup $xa2,@{K[0]}[2]
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mov.32 @x[2],@d[1]
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dup $xa3,@{K[0]}[3]
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lsr @x[3],@d[1],#32
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mov $A1,@K[0]
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dup $xb0,@{K[1]}[0]
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mov.32 @x[4],@d[2]
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dup $xb1,@{K[1]}[1]
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lsr @x[5],@d[2],#32
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mov $A2,@K[0]
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dup $xb2,@{K[1]}[2]
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mov.32 @x[6],@d[3]
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mov $B0,@K[1]
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dup $xb3,@{K[1]}[3]
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lsr @x[7],@d[3],#32
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mov $B1,@K[1]
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dup $xd0,@{K[3]}[0]
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mov.32 @x[8],@d[4]
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mov $B2,@K[1]
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dup $xd1,@{K[3]}[1]
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lsr @x[9],@d[4],#32
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mov $D0,@K[3]
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dup $xd2,@{K[3]}[2]
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mov.32 @x[10],@d[5]
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mov $D1,@K[4]
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dup $xd3,@{K[3]}[3]
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lsr @x[11],@d[5],#32
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mov $D2,@K[5]
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add $xd0,$xd0,$CTR
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mov.32 @x[12],@d[6]
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mov $C0,@K[2]
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dup $xc0,@{K[2]}[0]
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lsr @x[13],@d[6],#32
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mov $C1,@K[2]
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dup $xc1,@{K[2]}[1]
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mov.32 @x[14],@d[7]
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mov $C2,@K[2]
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dup $xc2,@{K[2]}[2]
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lsr @x[15],@d[7],#32
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dup $xc3,@{K[2]}[3]
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mov $ctr,#10
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subs $len,$len,#256
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subs $len,$len,#320
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.Loop_neon:
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sub $ctr,$ctr,#1
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___
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my @thread0=&NEONROUND($A0,$B0,$C0,$D0,$T0,0);
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my @thread1=&NEONROUND($A1,$B1,$C1,$D1,$T1,0);
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my @thread2=&NEONROUND($A2,$B2,$C2,$D2,$T2,0);
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my @thread3=&ROUND(0,4,8,12);
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my @plus_one=&ROUND(0,4,8,12);
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foreach (&NEON_lane_ROUND(0,4,8,12)) { eval; eval(shift(@plus_one)); }
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foreach (@thread0) {
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eval; eval(shift(@thread3));
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eval(shift(@thread1)); eval(shift(@thread3));
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eval(shift(@thread2)); eval(shift(@thread3));
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}
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@thread0=&NEONROUND($A0,$B0,$C0,$D0,$T0,1);
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@thread1=&NEONROUND($A1,$B1,$C1,$D1,$T1,1);
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@thread2=&NEONROUND($A2,$B2,$C2,$D2,$T2,1);
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@thread3=&ROUND(0,5,10,15);
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foreach (@thread0) {
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eval; eval(shift(@thread3));
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eval(shift(@thread1)); eval(shift(@thread3));
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eval(shift(@thread2)); eval(shift(@thread3));
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}
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@plus_one=&ROUND(0,5,10,15);
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foreach (&NEON_lane_ROUND(0,5,10,15)) { eval; eval(shift(@plus_one)); }
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$code.=<<___;
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cbnz $ctr,.Loop_neon
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add $xd0,$xd0,$CTR
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zip1 $xt0,$xa0,$xa1 // transpose data
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zip1 $xt1,$xa2,$xa3
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zip2 $xt2,$xa0,$xa1
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zip2 $xt3,$xa2,$xa3
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zip1.64 $xa0,$xt0,$xt1
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zip2.64 $xa1,$xt0,$xt1
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zip1.64 $xa2,$xt2,$xt3
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zip2.64 $xa3,$xt2,$xt3
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zip1 $xt0,$xb0,$xb1
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zip1 $xt1,$xb2,$xb3
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zip2 $xt2,$xb0,$xb1
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zip2 $xt3,$xb2,$xb3
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zip1.64 $xb0,$xt0,$xt1
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zip2.64 $xb1,$xt0,$xt1
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zip1.64 $xb2,$xt2,$xt3
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zip2.64 $xb3,$xt2,$xt3
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zip1 $xt0,$xc0,$xc1
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add.32 @x[0],@x[0],@d[0] // accumulate key block
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add $A0,$A0,@K[0]
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zip1 $xt1,$xc2,$xc3
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add @x[1],@x[1],@d[0],lsr#32
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add $A1,$A1,@K[0]
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zip2 $xt2,$xc0,$xc1
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add.32 @x[2],@x[2],@d[1]
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add $A2,$A2,@K[0]
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||||
zip2 $xt3,$xc2,$xc3
|
||||
add @x[3],@x[3],@d[1],lsr#32
|
||||
add $C0,$C0,@K[2]
|
||||
zip1.64 $xc0,$xt0,$xt1
|
||||
add.32 @x[4],@x[4],@d[2]
|
||||
add $C1,$C1,@K[2]
|
||||
zip2.64 $xc1,$xt0,$xt1
|
||||
add @x[5],@x[5],@d[2],lsr#32
|
||||
add $C2,$C2,@K[2]
|
||||
zip1.64 $xc2,$xt2,$xt3
|
||||
add.32 @x[6],@x[6],@d[3]
|
||||
add $D0,$D0,@K[3]
|
||||
zip2.64 $xc3,$xt2,$xt3
|
||||
add @x[7],@x[7],@d[3],lsr#32
|
||||
|
||||
zip1 $xt0,$xd0,$xd1
|
||||
add.32 @x[8],@x[8],@d[4]
|
||||
add $D1,$D1,@K[4]
|
||||
zip1 $xt1,$xd2,$xd3
|
||||
add @x[9],@x[9],@d[4],lsr#32
|
||||
zip2 $xt2,$xd0,$xd1
|
||||
add.32 @x[10],@x[10],@d[5]
|
||||
add $D2,$D2,@K[5]
|
||||
zip2 $xt3,$xd2,$xd3
|
||||
add @x[11],@x[11],@d[5],lsr#32
|
||||
zip1.64 $xd0,$xt0,$xt1
|
||||
add.32 @x[12],@x[12],@d[6]
|
||||
add $B0,$B0,@K[1]
|
||||
zip2.64 $xd1,$xt0,$xt1
|
||||
add @x[13],@x[13],@d[6],lsr#32
|
||||
zip1.64 $xd2,$xt2,$xt3
|
||||
add.32 @x[14],@x[14],@d[7]
|
||||
add $B1,$B1,@K[1]
|
||||
zip2.64 $xd3,$xt2,$xt3
|
||||
add @x[15],@x[15],@d[7],lsr#32
|
||||
add $B2,$B2,@K[1]
|
||||
|
||||
b.lo .Ltail_neon
|
||||
|
||||
add @x[0],@x[0],@x[1],lsl#32 // pack
|
||||
add @x[2],@x[2],@x[3],lsl#32
|
||||
ldp @x[1],@x[3],[$inp,#0] // load input
|
||||
add $xa0,$xa0,@K[0] // accumulate key block
|
||||
add @x[4],@x[4],@x[5],lsl#32
|
||||
add @x[6],@x[6],@x[7],lsl#32
|
||||
ldp @x[5],@x[7],[$inp,#16]
|
||||
add $xb0,$xb0,@K[1]
|
||||
add @x[8],@x[8],@x[9],lsl#32
|
||||
add @x[10],@x[10],@x[11],lsl#32
|
||||
ldp @x[9],@x[11],[$inp,#32]
|
||||
add $xc0,$xc0,@K[2]
|
||||
add @x[12],@x[12],@x[13],lsl#32
|
||||
add @x[14],@x[14],@x[15],lsl#32
|
||||
ldp @x[13],@x[15],[$inp,#48]
|
||||
add $xd0,$xd0,@K[3]
|
||||
add $inp,$inp,#64
|
||||
#ifdef __ARMEB__
|
||||
#ifdef __AARCH64EB__
|
||||
rev @x[0],@x[0]
|
||||
rev @x[2],@x[2]
|
||||
rev @x[4],@x[4]
|
||||
|
|
@ -522,48 +594,68 @@ $code.=<<___;
|
|||
rev @x[12],@x[12]
|
||||
rev @x[14],@x[14]
|
||||
#endif
|
||||
ld1.8 {$T0-$T3},[$inp],#64
|
||||
ld1.8 {$xt0-$xt3},[$inp],#64
|
||||
eor @x[0],@x[0],@x[1]
|
||||
add $xa1,$xa1,@K[0]
|
||||
eor @x[2],@x[2],@x[3]
|
||||
add $xb1,$xb1,@K[1]
|
||||
eor @x[4],@x[4],@x[5]
|
||||
add $xc1,$xc1,@K[2]
|
||||
eor @x[6],@x[6],@x[7]
|
||||
add $xd1,$xd1,@K[3]
|
||||
eor @x[8],@x[8],@x[9]
|
||||
eor $A0,$A0,$T0
|
||||
eor $xa0,$xa0,$xt0
|
||||
movi $xt0,#5
|
||||
eor @x[10],@x[10],@x[11]
|
||||
eor $B0,$B0,$T1
|
||||
eor $xb0,$xb0,$xt1
|
||||
eor @x[12],@x[12],@x[13]
|
||||
eor $C0,$C0,$T2
|
||||
eor $xc0,$xc0,$xt2
|
||||
eor @x[14],@x[14],@x[15]
|
||||
eor $D0,$D0,$T3
|
||||
ld1.8 {$T0-$T3},[$inp],#64
|
||||
eor $xd0,$xd0,$xt3
|
||||
add $CTR,$CTR,$xt0 // += 5
|
||||
ld1.8 {$xt0-$xt3},[$inp],#64
|
||||
|
||||
stp @x[0],@x[2],[$out,#0] // store output
|
||||
add @d[6],@d[6],#4 // increment counter
|
||||
add @d[6],@d[6],#5 // increment counter
|
||||
stp @x[4],@x[6],[$out,#16]
|
||||
add @K[3],@K[3],$ONE // += 4
|
||||
stp @x[8],@x[10],[$out,#32]
|
||||
add @K[4],@K[4],$ONE
|
||||
stp @x[12],@x[14],[$out,#48]
|
||||
add @K[5],@K[5],$ONE
|
||||
add $out,$out,#64
|
||||
|
||||
st1.8 {$A0-$D0},[$out],#64
|
||||
ld1.8 {$A0-$D0},[$inp],#64
|
||||
st1.8 {$xa0-$xd0},[$out],#64
|
||||
add $xa2,$xa2,@K[0]
|
||||
add $xb2,$xb2,@K[1]
|
||||
add $xc2,$xc2,@K[2]
|
||||
add $xd2,$xd2,@K[3]
|
||||
ld1.8 {$xa0-$xd0},[$inp],#64
|
||||
|
||||
eor $A1,$A1,$T0
|
||||
eor $B1,$B1,$T1
|
||||
eor $C1,$C1,$T2
|
||||
eor $D1,$D1,$T3
|
||||
st1.8 {$A1-$D1},[$out],#64
|
||||
eor $xa1,$xa1,$xt0
|
||||
eor $xb1,$xb1,$xt1
|
||||
eor $xc1,$xc1,$xt2
|
||||
eor $xd1,$xd1,$xt3
|
||||
st1.8 {$xa1-$xd1},[$out],#64
|
||||
add $xa3,$xa3,@K[0]
|
||||
add $xb3,$xb3,@K[1]
|
||||
add $xc3,$xc3,@K[2]
|
||||
add $xd3,$xd3,@K[3]
|
||||
ld1.8 {$xa1-$xd1},[$inp],#64
|
||||
|
||||
eor $A2,$A2,$A0
|
||||
eor $B2,$B2,$B0
|
||||
eor $C2,$C2,$C0
|
||||
eor $D2,$D2,$D0
|
||||
st1.8 {$A2-$D2},[$out],#64
|
||||
eor $xa2,$xa2,$xa0
|
||||
eor $xb2,$xb2,$xb0
|
||||
eor $xc2,$xc2,$xc0
|
||||
eor $xd2,$xd2,$xd0
|
||||
st1.8 {$xa2-$xd2},[$out],#64
|
||||
|
||||
eor $xa3,$xa3,$xa1
|
||||
eor $xb3,$xb3,$xb1
|
||||
eor $xc3,$xc3,$xc1
|
||||
eor $xd3,$xd3,$xd1
|
||||
st1.8 {$xa3-$xd3},[$out],#64
|
||||
|
||||
b.hi .Loop_outer_neon
|
||||
|
||||
ldp d8,d9,[sp] // meet ABI requirements
|
||||
|
||||
ldp x19,x20,[x29,#16]
|
||||
add sp,sp,#64
|
||||
ldp x21,x22,[x29,#32]
|
||||
|
|
@ -574,8 +666,10 @@ $code.=<<___;
|
|||
.inst 0xd50323bf // autiasp
|
||||
ret
|
||||
|
||||
.align 4
|
||||
.Ltail_neon:
|
||||
add $len,$len,#256
|
||||
add $len,$len,#320
|
||||
ldp d8,d9,[sp] // meet ABI requirements
|
||||
cmp $len,#64
|
||||
b.lo .Less_than_64
|
||||
|
||||
|
|
@ -592,7 +686,7 @@ $code.=<<___;
|
|||
add @x[14],@x[14],@x[15],lsl#32
|
||||
ldp @x[13],@x[15],[$inp,#48]
|
||||
add $inp,$inp,#64
|
||||
#ifdef __ARMEB__
|
||||
#ifdef __AARCH64EB__
|
||||
rev @x[0],@x[0]
|
||||
rev @x[2],@x[2]
|
||||
rev @x[4],@x[4]
|
||||
|
|
@ -612,48 +706,68 @@ $code.=<<___;
|
|||
eor @x[14],@x[14],@x[15]
|
||||
|
||||
stp @x[0],@x[2],[$out,#0] // store output
|
||||
add @d[6],@d[6],#4 // increment counter
|
||||
add $xa0,$xa0,@K[0] // accumulate key block
|
||||
stp @x[4],@x[6],[$out,#16]
|
||||
add $xb0,$xb0,@K[1]
|
||||
stp @x[8],@x[10],[$out,#32]
|
||||
add $xc0,$xc0,@K[2]
|
||||
stp @x[12],@x[14],[$out,#48]
|
||||
add $xd0,$xd0,@K[3]
|
||||
add $out,$out,#64
|
||||
b.eq .Ldone_neon
|
||||
sub $len,$len,#64
|
||||
cmp $len,#64
|
||||
b.lo .Less_than_128
|
||||
b.lo .Last_neon
|
||||
|
||||
ld1.8 {$T0-$T3},[$inp],#64
|
||||
eor $A0,$A0,$T0
|
||||
eor $B0,$B0,$T1
|
||||
eor $C0,$C0,$T2
|
||||
eor $D0,$D0,$T3
|
||||
st1.8 {$A0-$D0},[$out],#64
|
||||
ld1.8 {$xt0-$xt3},[$inp],#64
|
||||
eor $xa0,$xa0,$xt0
|
||||
eor $xb0,$xb0,$xt1
|
||||
eor $xc0,$xc0,$xt2
|
||||
eor $xd0,$xd0,$xt3
|
||||
st1.8 {$xa0-$xd0},[$out],#64
|
||||
b.eq .Ldone_neon
|
||||
|
||||
add $xa0,$xa1,@K[0]
|
||||
add $xb0,$xb1,@K[1]
|
||||
sub $len,$len,#64
|
||||
add $xc0,$xc1,@K[2]
|
||||
cmp $len,#64
|
||||
b.lo .Less_than_192
|
||||
add $xd0,$xd1,@K[3]
|
||||
b.lo .Last_neon
|
||||
|
||||
ld1.8 {$T0-$T3},[$inp],#64
|
||||
eor $A1,$A1,$T0
|
||||
eor $B1,$B1,$T1
|
||||
eor $C1,$C1,$T2
|
||||
eor $D1,$D1,$T3
|
||||
st1.8 {$A1-$D1},[$out],#64
|
||||
ld1.8 {$xt0-$xt3},[$inp],#64
|
||||
eor $xa1,$xa0,$xt0
|
||||
eor $xb1,$xb0,$xt1
|
||||
eor $xc1,$xc0,$xt2
|
||||
eor $xd1,$xd0,$xt3
|
||||
st1.8 {$xa1-$xd1},[$out],#64
|
||||
b.eq .Ldone_neon
|
||||
|
||||
add $xa0,$xa2,@K[0]
|
||||
add $xb0,$xb2,@K[1]
|
||||
sub $len,$len,#64
|
||||
add $xc0,$xc2,@K[2]
|
||||
cmp $len,#64
|
||||
add $xd0,$xd2,@K[3]
|
||||
b.lo .Last_neon
|
||||
|
||||
ld1.8 {$xt0-$xt3},[$inp],#64
|
||||
eor $xa2,$xa0,$xt0
|
||||
eor $xb2,$xb0,$xt1
|
||||
eor $xc2,$xc0,$xt2
|
||||
eor $xd2,$xd0,$xt3
|
||||
st1.8 {$xa2-$xd2},[$out],#64
|
||||
b.eq .Ldone_neon
|
||||
|
||||
add $xa0,$xa3,@K[0]
|
||||
add $xb0,$xb3,@K[1]
|
||||
add $xc0,$xc3,@K[2]
|
||||
add $xd0,$xd3,@K[3]
|
||||
sub $len,$len,#64
|
||||
|
||||
st1.8 {$A2-$D2},[sp]
|
||||
b .Last_neon
|
||||
|
||||
.Less_than_128:
|
||||
st1.8 {$A0-$D0},[sp]
|
||||
b .Last_neon
|
||||
.Less_than_192:
|
||||
st1.8 {$A1-$D1},[sp]
|
||||
b .Last_neon
|
||||
|
||||
.align 4
|
||||
.Last_neon:
|
||||
st1.8 {$xa0-$xd0},[sp]
|
||||
|
||||
sub $out,$out,#1
|
||||
add $inp,$inp,$len
|
||||
add $out,$out,$len
|
||||
|
|
@ -686,9 +800,41 @@ $code.=<<___;
|
|||
.size ChaCha20_neon,.-ChaCha20_neon
|
||||
___
|
||||
{
|
||||
my @K = map("v$_.4s",(0..6));
|
||||
my ($T0,$T1,$T2,$T3,$T4,$T5)=@K;
|
||||
my ($A0,$B0,$C0,$D0,$A1,$B1,$C1,$D1,$A2,$B2,$C2,$D2,
|
||||
$A3,$B3,$C3,$D3,$A4,$B4,$C4,$D4,$A5,$B5,$C5,$D5) = map("v$_.4s",(0..23));
|
||||
$A3,$B3,$C3,$D3,$A4,$B4,$C4,$D4,$A5,$B5,$C5,$D5) = map("v$_.4s",(8..31));
|
||||
my $rot24 = @K[6];
|
||||
my $ONE = "v7.4s";
|
||||
|
||||
sub NEONROUND {
|
||||
my $odd = pop;
|
||||
my ($a,$b,$c,$d,$t)=@_;
|
||||
|
||||
(
|
||||
"&add ('$a','$a','$b')",
|
||||
"&eor ('$d','$d','$a')",
|
||||
"&rev32_16 ('$d','$d')", # vrot ($d,16)
|
||||
|
||||
"&add ('$c','$c','$d')",
|
||||
"&eor ('$t','$b','$c')",
|
||||
"&ushr ('$b','$t',20)",
|
||||
"&sli ('$b','$t',12)",
|
||||
|
||||
"&add ('$a','$a','$b')",
|
||||
"&eor ('$d','$d','$a')",
|
||||
"&tbl ('$d','{$d}','$rot24')",
|
||||
|
||||
"&add ('$c','$c','$d')",
|
||||
"&eor ('$t','$b','$c')",
|
||||
"&ushr ('$b','$t',25)",
|
||||
"&sli ('$b','$t',7)",
|
||||
|
||||
"&ext ('$c','$c','$c',8)",
|
||||
"&ext ('$d','$d','$d',$odd?4:12)",
|
||||
"&ext ('$b','$b','$b',$odd?12:4)"
|
||||
);
|
||||
}
|
||||
|
||||
$code.=<<___;
|
||||
.type ChaCha20_512_neon,%function
|
||||
|
|
@ -708,6 +854,7 @@ ChaCha20_512_neon:
|
|||
.L512_or_more_neon:
|
||||
sub sp,sp,#128+64
|
||||
|
||||
eor $ONE,$ONE,$ONE
|
||||
ldp @d[0],@d[1],[@x[0]] // load sigma
|
||||
ld1 {@K[0]},[@x[0]],#16
|
||||
ldp @d[2],@d[3],[$key] // load key
|
||||
|
|
@ -715,8 +862,9 @@ ChaCha20_512_neon:
|
|||
ld1 {@K[1],@K[2]},[$key]
|
||||
ldp @d[6],@d[7],[$ctr] // load counter
|
||||
ld1 {@K[3]},[$ctr]
|
||||
ld1 {$ONE},[@x[0]]
|
||||
#ifdef __ARMEB__
|
||||
ld1 {$ONE}[0],[@x[0]]
|
||||
add $key,@x[0],#16 // .Lrot24
|
||||
#ifdef __AARCH64EB__
|
||||
rev64 @K[0],@K[0]
|
||||
ror @d[2],@d[2],#32
|
||||
ror @d[3],@d[3],#32
|
||||
|
|
@ -783,9 +931,10 @@ ChaCha20_512_neon:
|
|||
mov $C4,@K[2]
|
||||
stp @K[3],@K[4],[sp,#48] // off-load key block, variable part
|
||||
mov $C5,@K[2]
|
||||
str @K[5],[sp,#80]
|
||||
stp @K[5],@K[6],[sp,#80]
|
||||
|
||||
mov $ctr,#5
|
||||
ld1 {$rot24},[$key]
|
||||
subs $len,$len,#512
|
||||
.Loop_upper_neon:
|
||||
sub $ctr,$ctr,#1
|
||||
|
|
@ -858,7 +1007,7 @@ $code.=<<___;
|
|||
add @x[14],@x[14],@x[15],lsl#32
|
||||
ldp @x[13],@x[15],[$inp,#48]
|
||||
add $inp,$inp,#64
|
||||
#ifdef __ARMEB__
|
||||
#ifdef __AARCH64EB__
|
||||
rev @x[0],@x[0]
|
||||
rev @x[2],@x[2]
|
||||
rev @x[4],@x[4]
|
||||
|
|
@ -947,6 +1096,7 @@ $code.=<<___;
|
|||
add.32 @x[2],@x[2],@d[1]
|
||||
ldp @K[4],@K[5],[sp,#64]
|
||||
add @x[3],@x[3],@d[1],lsr#32
|
||||
ldr @K[6],[sp,#96]
|
||||
add $A0,$A0,@K[0]
|
||||
add.32 @x[4],@x[4],@d[2]
|
||||
add $A1,$A1,@K[0]
|
||||
|
|
@ -999,7 +1149,7 @@ $code.=<<___;
|
|||
add $inp,$inp,#64
|
||||
add $B5,$B5,@K[1]
|
||||
|
||||
#ifdef __ARMEB__
|
||||
#ifdef __AARCH64EB__
|
||||
rev @x[0],@x[0]
|
||||
rev @x[2],@x[2]
|
||||
rev @x[4],@x[4]
|
||||
|
|
@ -1077,24 +1227,24 @@ $code.=<<___;
|
|||
b.hs .Loop_outer_512_neon
|
||||
|
||||
adds $len,$len,#512
|
||||
ushr $A0,$ONE,#2 // 4 -> 1
|
||||
ushr $ONE,$ONE,#1 // 4 -> 2
|
||||
|
||||
ldp d8,d9,[sp,#128+0] // meet ABI requirements
|
||||
ldp d10,d11,[sp,#128+16]
|
||||
ldp d12,d13,[sp,#128+32]
|
||||
ldp d14,d15,[sp,#128+48]
|
||||
|
||||
stp @K[0],$ONE,[sp,#0] // wipe off-load area
|
||||
stp @K[0],$ONE,[sp,#32]
|
||||
stp @K[0],$ONE,[sp,#64]
|
||||
stp @K[0],@K[0],[sp,#0] // wipe off-load area
|
||||
stp @K[0],@K[0],[sp,#32]
|
||||
stp @K[0],@K[0],[sp,#64]
|
||||
|
||||
b.eq .Ldone_512_neon
|
||||
|
||||
sub $key,$key,#16 // .Lone
|
||||
cmp $len,#192
|
||||
sub @K[3],@K[3],$A0 // -= 1
|
||||
sub @K[4],@K[4],$A0
|
||||
sub @K[5],@K[5],$A0
|
||||
add sp,sp,#128
|
||||
sub @K[3],@K[3],$ONE // -= 2
|
||||
ld1 {$CTR,$ROT24},[$key]
|
||||
b.hs .Loop_outer_neon
|
||||
|
||||
eor @K[1],@K[1],@K[1]
|
||||
|
|
@ -1124,9 +1274,11 @@ foreach (split("\n",$code)) {
|
|||
s/\`([^\`]*)\`/eval $1/geo;
|
||||
|
||||
(s/\b([a-z]+)\.32\b/$1/ and (s/x([0-9]+)/w$1/g or 1)) or
|
||||
(m/\b(eor|ext|mov)\b/ and (s/\.4s/\.16b/g or 1)) or
|
||||
(m/\b(eor|ext|mov|tbl)\b/ and (s/\.4s/\.16b/g or 1)) or
|
||||
(s/\b((?:ld|st)1)\.8\b/$1/ and (s/\.4s/\.16b/g or 1)) or
|
||||
(m/\b(ld|st)[rp]\b/ and (s/v([0-9]+)\.4s/q$1/g or 1)) or
|
||||
(m/\b(dup|ld1)\b/ and (s/\.4(s}?\[[0-3]\])/.$1/g or 1)) or
|
||||
(s/\b(zip[12])\.64\b/$1/ and (s/\.4s/\.2d/g or 1)) or
|
||||
(s/\brev32\.16\b/rev32/ and (s/\.4s/\.8h/g or 1));
|
||||
|
||||
#s/\bq([0-9]+)#(lo|hi)/sprintf "d%d",2*$1+($2 eq "hi")/geo;
|
||||
|
|
|
|||
Loading…
Reference in New Issue