| #! /usr/bin/env perl |
| # Copyright 2016 The OpenSSL Project Authors. All Rights Reserved. |
| # |
| # Licensed under the OpenSSL license (the "License"). You may not use |
| # this file except in compliance with the License. You can obtain a copy |
| # in the file LICENSE in the source distribution or at |
| # https://www.openssl.org/source/license.html |
| |
| # |
| # ==================================================================== |
| # 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/. |
| # ==================================================================== |
| # |
| # June 2015 |
| # |
| # ChaCha20 for ARMv8. |
| # |
| # Performance in cycles per byte out of large buffer. |
| # |
| # IALU/gcc-4.9 3xNEON+1xIALU 6xNEON+2xIALU |
| # |
| # Apple A7 5.50/+49% 3.33 1.70 |
| # Cortex-A53 8.40/+80% 4.72 4.72(*) |
| # Cortex-A57 8.06/+43% 4.90 4.43(**) |
| # Denver 4.50/+82% 2.63 2.67(*) |
| # X-Gene 9.50/+46% 8.82 8.89(*) |
| # Mongoose 8.00/+44% 3.64 3.25 |
| # Kryo 8.17/+50% 4.83 4.65 |
| # |
| # (*) it's expected that doubling interleave factor doesn't help |
| # all processors, only those with higher NEON latency and |
| # higher instruction issue rate; |
| # (**) expected improvement was actually higher; |
| |
| $flavour=shift; |
| $output=shift; |
| |
| $0 =~ m/(.*[\/\\])[^\/\\]+$/; $dir=$1; |
| ( $xlate="${dir}arm-xlate.pl" and -f $xlate ) or |
| ( $xlate="${dir}../../perlasm/arm-xlate.pl" and -f $xlate) or |
| die "can't locate arm-xlate.pl"; |
| |
| open OUT,"| \"$^X\" $xlate $flavour $output"; |
| *STDOUT=*OUT; |
| |
| sub AUTOLOAD() # thunk [simplified] x86-style perlasm |
| { my $opcode = $AUTOLOAD; $opcode =~ s/.*:://; $opcode =~ s/_/\./; |
| my $arg = pop; |
| $arg = "#$arg" if ($arg*1 eq $arg); |
| $code .= "\t$opcode\t".join(',',@_,$arg)."\n"; |
| } |
| |
| my ($out,$inp,$len,$key,$ctr) = map("x$_",(0..4)); |
| |
| my @x=map("x$_",(5..17,19..21)); |
| my @d=map("x$_",(22..28,30)); |
| |
| sub ROUND { |
| my ($a0,$b0,$c0,$d0)=@_; |
| my ($a1,$b1,$c1,$d1)=map(($_&~3)+(($_+1)&3),($a0,$b0,$c0,$d0)); |
| my ($a2,$b2,$c2,$d2)=map(($_&~3)+(($_+1)&3),($a1,$b1,$c1,$d1)); |
| my ($a3,$b3,$c3,$d3)=map(($_&~3)+(($_+1)&3),($a2,$b2,$c2,$d2)); |
| |
| ( |
| "&add_32 (@x[$a0],@x[$a0],@x[$b0])", |
| "&add_32 (@x[$a1],@x[$a1],@x[$b1])", |
| "&add_32 (@x[$a2],@x[$a2],@x[$b2])", |
| "&add_32 (@x[$a3],@x[$a3],@x[$b3])", |
| "&eor_32 (@x[$d0],@x[$d0],@x[$a0])", |
| "&eor_32 (@x[$d1],@x[$d1],@x[$a1])", |
| "&eor_32 (@x[$d2],@x[$d2],@x[$a2])", |
| "&eor_32 (@x[$d3],@x[$d3],@x[$a3])", |
| "&ror_32 (@x[$d0],@x[$d0],16)", |
| "&ror_32 (@x[$d1],@x[$d1],16)", |
| "&ror_32 (@x[$d2],@x[$d2],16)", |
| "&ror_32 (@x[$d3],@x[$d3],16)", |
| |
| "&add_32 (@x[$c0],@x[$c0],@x[$d0])", |
| "&add_32 (@x[$c1],@x[$c1],@x[$d1])", |
| "&add_32 (@x[$c2],@x[$c2],@x[$d2])", |
| "&add_32 (@x[$c3],@x[$c3],@x[$d3])", |
| "&eor_32 (@x[$b0],@x[$b0],@x[$c0])", |
| "&eor_32 (@x[$b1],@x[$b1],@x[$c1])", |
| "&eor_32 (@x[$b2],@x[$b2],@x[$c2])", |
| "&eor_32 (@x[$b3],@x[$b3],@x[$c3])", |
| "&ror_32 (@x[$b0],@x[$b0],20)", |
| "&ror_32 (@x[$b1],@x[$b1],20)", |
| "&ror_32 (@x[$b2],@x[$b2],20)", |
| "&ror_32 (@x[$b3],@x[$b3],20)", |
| |
| "&add_32 (@x[$a0],@x[$a0],@x[$b0])", |
| "&add_32 (@x[$a1],@x[$a1],@x[$b1])", |
| "&add_32 (@x[$a2],@x[$a2],@x[$b2])", |
| "&add_32 (@x[$a3],@x[$a3],@x[$b3])", |
| "&eor_32 (@x[$d0],@x[$d0],@x[$a0])", |
| "&eor_32 (@x[$d1],@x[$d1],@x[$a1])", |
| "&eor_32 (@x[$d2],@x[$d2],@x[$a2])", |
| "&eor_32 (@x[$d3],@x[$d3],@x[$a3])", |
| "&ror_32 (@x[$d0],@x[$d0],24)", |
| "&ror_32 (@x[$d1],@x[$d1],24)", |
| "&ror_32 (@x[$d2],@x[$d2],24)", |
| "&ror_32 (@x[$d3],@x[$d3],24)", |
| |
| "&add_32 (@x[$c0],@x[$c0],@x[$d0])", |
| "&add_32 (@x[$c1],@x[$c1],@x[$d1])", |
| "&add_32 (@x[$c2],@x[$c2],@x[$d2])", |
| "&add_32 (@x[$c3],@x[$c3],@x[$d3])", |
| "&eor_32 (@x[$b0],@x[$b0],@x[$c0])", |
| "&eor_32 (@x[$b1],@x[$b1],@x[$c1])", |
| "&eor_32 (@x[$b2],@x[$b2],@x[$c2])", |
| "&eor_32 (@x[$b3],@x[$b3],@x[$c3])", |
| "&ror_32 (@x[$b0],@x[$b0],25)", |
| "&ror_32 (@x[$b1],@x[$b1],25)", |
| "&ror_32 (@x[$b2],@x[$b2],25)", |
| "&ror_32 (@x[$b3],@x[$b3],25)" |
| ); |
| } |
| |
| $code.=<<___; |
| #include <openssl/arm_arch.h> |
| |
| .extern OPENSSL_armcap_P |
| |
| .section .rodata |
| |
| .align 5 |
| .Lsigma: |
| .quad 0x3320646e61707865,0x6b20657479622d32 // endian-neutral |
| .Lone: |
| .long 1,0,0,0 |
| .LOPENSSL_armcap_P: |
| #ifdef __ILP32__ |
| .long OPENSSL_armcap_P-. |
| #else |
| .quad OPENSSL_armcap_P-. |
| #endif |
| .asciz "ChaCha20 for ARMv8, CRYPTOGAMS by <appro\@openssl.org>" |
| |
| .text |
| |
| .globl ChaCha20_ctr32 |
| .type ChaCha20_ctr32,%function |
| .align 5 |
| ChaCha20_ctr32: |
| cbz $len,.Labort |
| adrp @x[0],:pg_hi21:OPENSSL_armcap_P |
| cmp $len,#192 |
| b.lo .Lshort |
| add @x[0],@x[0],:lo12:OPENSSL_armcap_P |
| ldr w17,[@x[0]] |
| tst w17,#ARMV7_NEON |
| b.ne ChaCha20_neon |
| |
| .Lshort: |
| stp x29,x30,[sp,#-96]! |
| add x29,sp,#0 |
| |
| adrp @x[0],:pg_hi21:.Lsigma |
| add @x[0],@x[0],:lo12:.Lsigma |
| stp x19,x20,[sp,#16] |
| stp x21,x22,[sp,#32] |
| stp x23,x24,[sp,#48] |
| stp x25,x26,[sp,#64] |
| stp x27,x28,[sp,#80] |
| sub sp,sp,#64 |
| |
| ldp @d[0],@d[1],[@x[0]] // load sigma |
| ldp @d[2],@d[3],[$key] // load key |
| ldp @d[4],@d[5],[$key,#16] |
| ldp @d[6],@d[7],[$ctr] // load counter |
| #ifdef __ARMEB__ |
| ror @d[2],@d[2],#32 |
| ror @d[3],@d[3],#32 |
| ror @d[4],@d[4],#32 |
| ror @d[5],@d[5],#32 |
| ror @d[6],@d[6],#32 |
| ror @d[7],@d[7],#32 |
| #endif |
| |
| .Loop_outer: |
| mov.32 @x[0],@d[0] // unpack key block |
| lsr @x[1],@d[0],#32 |
| mov.32 @x[2],@d[1] |
| lsr @x[3],@d[1],#32 |
| mov.32 @x[4],@d[2] |
| lsr @x[5],@d[2],#32 |
| mov.32 @x[6],@d[3] |
| lsr @x[7],@d[3],#32 |
| mov.32 @x[8],@d[4] |
| lsr @x[9],@d[4],#32 |
| mov.32 @x[10],@d[5] |
| lsr @x[11],@d[5],#32 |
| mov.32 @x[12],@d[6] |
| lsr @x[13],@d[6],#32 |
| mov.32 @x[14],@d[7] |
| lsr @x[15],@d[7],#32 |
| |
| mov $ctr,#10 |
| subs $len,$len,#64 |
| .Loop: |
| sub $ctr,$ctr,#1 |
| ___ |
| foreach (&ROUND(0, 4, 8,12)) { eval; } |
| foreach (&ROUND(0, 5,10,15)) { eval; } |
| $code.=<<___; |
| cbnz $ctr,.Loop |
| |
| add.32 @x[0],@x[0],@d[0] // accumulate key block |
| add @x[1],@x[1],@d[0],lsr#32 |
| add.32 @x[2],@x[2],@d[1] |
| add @x[3],@x[3],@d[1],lsr#32 |
| add.32 @x[4],@x[4],@d[2] |
| add @x[5],@x[5],@d[2],lsr#32 |
| add.32 @x[6],@x[6],@d[3] |
| add @x[7],@x[7],@d[3],lsr#32 |
| add.32 @x[8],@x[8],@d[4] |
| add @x[9],@x[9],@d[4],lsr#32 |
| add.32 @x[10],@x[10],@d[5] |
| add @x[11],@x[11],@d[5],lsr#32 |
| add.32 @x[12],@x[12],@d[6] |
| add @x[13],@x[13],@d[6],lsr#32 |
| add.32 @x[14],@x[14],@d[7] |
| add @x[15],@x[15],@d[7],lsr#32 |
| |
| b.lo .Ltail |
| |
| add @x[0],@x[0],@x[1],lsl#32 // pack |
| add @x[2],@x[2],@x[3],lsl#32 |
| ldp @x[1],@x[3],[$inp,#0] // load input |
| add @x[4],@x[4],@x[5],lsl#32 |
| add @x[6],@x[6],@x[7],lsl#32 |
| ldp @x[5],@x[7],[$inp,#16] |
| add @x[8],@x[8],@x[9],lsl#32 |
| add @x[10],@x[10],@x[11],lsl#32 |
| ldp @x[9],@x[11],[$inp,#32] |
| add @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 $inp,$inp,#64 |
| #ifdef __ARMEB__ |
| rev @x[0],@x[0] |
| rev @x[2],@x[2] |
| rev @x[4],@x[4] |
| rev @x[6],@x[6] |
| rev @x[8],@x[8] |
| rev @x[10],@x[10] |
| rev @x[12],@x[12] |
| rev @x[14],@x[14] |
| #endif |
| eor @x[0],@x[0],@x[1] |
| eor @x[2],@x[2],@x[3] |
| eor @x[4],@x[4],@x[5] |
| eor @x[6],@x[6],@x[7] |
| eor @x[8],@x[8],@x[9] |
| eor @x[10],@x[10],@x[11] |
| eor @x[12],@x[12],@x[13] |
| eor @x[14],@x[14],@x[15] |
| |
| stp @x[0],@x[2],[$out,#0] // store output |
| add @d[6],@d[6],#1 // increment counter |
| stp @x[4],@x[6],[$out,#16] |
| stp @x[8],@x[10],[$out,#32] |
| stp @x[12],@x[14],[$out,#48] |
| add $out,$out,#64 |
| |
| b.hi .Loop_outer |
| |
| ldp x19,x20,[x29,#16] |
| add sp,sp,#64 |
| ldp x21,x22,[x29,#32] |
| ldp x23,x24,[x29,#48] |
| ldp x25,x26,[x29,#64] |
| ldp x27,x28,[x29,#80] |
| ldp x29,x30,[sp],#96 |
| .Labort: |
| ret |
| |
| .align 4 |
| .Ltail: |
| add $len,$len,#64 |
| .Less_than_64: |
| sub $out,$out,#1 |
| add $inp,$inp,$len |
| add $out,$out,$len |
| add $ctr,sp,$len |
| neg $len,$len |
| |
| add @x[0],@x[0],@x[1],lsl#32 // pack |
| add @x[2],@x[2],@x[3],lsl#32 |
| add @x[4],@x[4],@x[5],lsl#32 |
| add @x[6],@x[6],@x[7],lsl#32 |
| add @x[8],@x[8],@x[9],lsl#32 |
| add @x[10],@x[10],@x[11],lsl#32 |
| add @x[12],@x[12],@x[13],lsl#32 |
| add @x[14],@x[14],@x[15],lsl#32 |
| #ifdef __ARMEB__ |
| rev @x[0],@x[0] |
| rev @x[2],@x[2] |
| rev @x[4],@x[4] |
| rev @x[6],@x[6] |
| rev @x[8],@x[8] |
| rev @x[10],@x[10] |
| rev @x[12],@x[12] |
| rev @x[14],@x[14] |
| #endif |
| stp @x[0],@x[2],[sp,#0] |
| stp @x[4],@x[6],[sp,#16] |
| stp @x[8],@x[10],[sp,#32] |
| stp @x[12],@x[14],[sp,#48] |
| |
| .Loop_tail: |
| ldrb w10,[$inp,$len] |
| ldrb w11,[$ctr,$len] |
| add $len,$len,#1 |
| eor w10,w10,w11 |
| strb w10,[$out,$len] |
| cbnz $len,.Loop_tail |
| |
| stp xzr,xzr,[sp,#0] |
| stp xzr,xzr,[sp,#16] |
| stp xzr,xzr,[sp,#32] |
| stp xzr,xzr,[sp,#48] |
| |
| ldp x19,x20,[x29,#16] |
| add sp,sp,#64 |
| ldp x21,x22,[x29,#32] |
| ldp x23,x24,[x29,#48] |
| ldp x25,x26,[x29,#64] |
| ldp x27,x28,[x29,#80] |
| ldp x29,x30,[sp],#96 |
| ret |
| .size ChaCha20_ctr32,.-ChaCha20_ctr32 |
| ___ |
| |
| {{{ |
| my ($A0,$B0,$C0,$D0,$A1,$B1,$C1,$D1,$A2,$B2,$C2,$D2,$T0,$T1,$T2,$T3) = |
| map("v$_.4s",(0..7,16..23)); |
| my (@K)=map("v$_.4s",(24..30)); |
| my $ONE="v31.4s"; |
| |
| 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 ('$t','$d','$a')", |
| "&ushr ('$d','$t',24)", |
| "&sli ('$d','$t',8)", |
| |
| "&add ('$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_neon,%function |
| .align 5 |
| ChaCha20_neon: |
| stp x29,x30,[sp,#-96]! |
| add x29,sp,#0 |
| |
| adrp @x[0],:pg_hi21:.Lsigma |
| add @x[0],@x[0],:lo12:.Lsigma |
| stp x19,x20,[sp,#16] |
| stp x21,x22,[sp,#32] |
| stp x23,x24,[sp,#48] |
| stp x25,x26,[sp,#64] |
| stp x27,x28,[sp,#80] |
| cmp $len,#512 |
| b.hs .L512_or_more_neon |
| |
| sub sp,sp,#64 |
| |
| ldp @d[0],@d[1],[@x[0]] // load sigma |
| ld1 {@K[0]},[@x[0]],#16 |
| ldp @d[2],@d[3],[$key] // load key |
| ldp @d[4],@d[5],[$key,#16] |
| ld1 {@K[1],@K[2]},[$key] |
| ldp @d[6],@d[7],[$ctr] // load counter |
| ld1 {@K[3]},[$ctr] |
| ld1 {$ONE},[@x[0]] |
| #ifdef __ARMEB__ |
| rev64 @K[0],@K[0] |
| ror @d[2],@d[2],#32 |
| ror @d[3],@d[3],#32 |
| ror @d[4],@d[4],#32 |
| ror @d[5],@d[5],#32 |
| ror @d[6],@d[6],#32 |
| ror @d[7],@d[7],#32 |
| #endif |
| add @K[3],@K[3],$ONE // += 1 |
| add @K[4],@K[3],$ONE |
| add @K[5],@K[4],$ONE |
| shl $ONE,$ONE,#2 // 1 -> 4 |
| |
| .Loop_outer_neon: |
| mov.32 @x[0],@d[0] // unpack key block |
| lsr @x[1],@d[0],#32 |
| mov $A0,@K[0] |
| mov.32 @x[2],@d[1] |
| lsr @x[3],@d[1],#32 |
| mov $A1,@K[0] |
| mov.32 @x[4],@d[2] |
| lsr @x[5],@d[2],#32 |
| mov $A2,@K[0] |
| mov.32 @x[6],@d[3] |
| mov $B0,@K[1] |
| lsr @x[7],@d[3],#32 |
| mov $B1,@K[1] |
| mov.32 @x[8],@d[4] |
| mov $B2,@K[1] |
| lsr @x[9],@d[4],#32 |
| mov $D0,@K[3] |
| mov.32 @x[10],@d[5] |
| mov $D1,@K[4] |
| lsr @x[11],@d[5],#32 |
| mov $D2,@K[5] |
| mov.32 @x[12],@d[6] |
| mov $C0,@K[2] |
| lsr @x[13],@d[6],#32 |
| mov $C1,@K[2] |
| mov.32 @x[14],@d[7] |
| mov $C2,@K[2] |
| lsr @x[15],@d[7],#32 |
| |
| mov $ctr,#10 |
| subs $len,$len,#256 |
| .Loop_neon: |
| sub $ctr,$ctr,#1 |
| ___ |
| my @thread0=&NEONROUND($A0,$B0,$C0,$D0,$T0,0); |
| my @thread1=&NEONROUND($A1,$B1,$C1,$D1,$T1,0); |
| my @thread2=&NEONROUND($A2,$B2,$C2,$D2,$T2,0); |
| my @thread3=&ROUND(0,4,8,12); |
| |
| foreach (@thread0) { |
| eval; eval(shift(@thread3)); |
| eval(shift(@thread1)); eval(shift(@thread3)); |
| eval(shift(@thread2)); eval(shift(@thread3)); |
| } |
| |
| @thread0=&NEONROUND($A0,$B0,$C0,$D0,$T0,1); |
| @thread1=&NEONROUND($A1,$B1,$C1,$D1,$T1,1); |
| @thread2=&NEONROUND($A2,$B2,$C2,$D2,$T2,1); |
| @thread3=&ROUND(0,5,10,15); |
| |
| foreach (@thread0) { |
| eval; eval(shift(@thread3)); |
| eval(shift(@thread1)); eval(shift(@thread3)); |
| eval(shift(@thread2)); eval(shift(@thread3)); |
| } |
| $code.=<<___; |
| cbnz $ctr,.Loop_neon |
| |
| add.32 @x[0],@x[0],@d[0] // accumulate key block |
| add $A0,$A0,@K[0] |
| add @x[1],@x[1],@d[0],lsr#32 |
| add $A1,$A1,@K[0] |
| add.32 @x[2],@x[2],@d[1] |
| add $A2,$A2,@K[0] |
| add @x[3],@x[3],@d[1],lsr#32 |
| add $C0,$C0,@K[2] |
| add.32 @x[4],@x[4],@d[2] |
| add $C1,$C1,@K[2] |
| add @x[5],@x[5],@d[2],lsr#32 |
| add $C2,$C2,@K[2] |
| add.32 @x[6],@x[6],@d[3] |
| add $D0,$D0,@K[3] |
| add @x[7],@x[7],@d[3],lsr#32 |
| add.32 @x[8],@x[8],@d[4] |
| add $D1,$D1,@K[4] |
| add @x[9],@x[9],@d[4],lsr#32 |
| add.32 @x[10],@x[10],@d[5] |
| add $D2,$D2,@K[5] |
| add @x[11],@x[11],@d[5],lsr#32 |
| add.32 @x[12],@x[12],@d[6] |
| add $B0,$B0,@K[1] |
| add @x[13],@x[13],@d[6],lsr#32 |
| add.32 @x[14],@x[14],@d[7] |
| add $B1,$B1,@K[1] |
| 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],[$inp,#0] // load input |
| add @x[4],@x[4],@x[5],lsl#32 |
| add @x[6],@x[6],@x[7],lsl#32 |
| ldp @x[5],@x[7],[$inp,#16] |
| add @x[8],@x[8],@x[9],lsl#32 |
| add @x[10],@x[10],@x[11],lsl#32 |
| ldp @x[9],@x[11],[$inp,#32] |
| add @x[12],@x[12],@x[13],lsl#32 |
| add @x[14],@x[14],@x[15],lsl#32 |
| ldp @x[13],@x[15],[$inp,#48] |
| add $inp,$inp,#64 |
| #ifdef __ARMEB__ |
| rev @x[0],@x[0] |
| rev @x[2],@x[2] |
| rev @x[4],@x[4] |
| rev @x[6],@x[6] |
| rev @x[8],@x[8] |
| rev @x[10],@x[10] |
| rev @x[12],@x[12] |
| rev @x[14],@x[14] |
| #endif |
| ld1.8 {$T0-$T3},[$inp],#64 |
| eor @x[0],@x[0],@x[1] |
| eor @x[2],@x[2],@x[3] |
| eor @x[4],@x[4],@x[5] |
| eor @x[6],@x[6],@x[7] |
| eor @x[8],@x[8],@x[9] |
| eor $A0,$A0,$T0 |
| eor @x[10],@x[10],@x[11] |
| eor $B0,$B0,$T1 |
| eor @x[12],@x[12],@x[13] |
| eor $C0,$C0,$T2 |
| eor @x[14],@x[14],@x[15] |
| eor $D0,$D0,$T3 |
| ld1.8 {$T0-$T3},[$inp],#64 |
| |
| stp @x[0],@x[2],[$out,#0] // store output |
| add @d[6],@d[6],#4 // increment counter |
| stp @x[4],@x[6],[$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 |
| |
| eor $A1,$A1,$T0 |
| eor $B1,$B1,$T1 |
| eor $C1,$C1,$T2 |
| eor $D1,$D1,$T3 |
| st1.8 {$A1-$D1},[$out],#64 |
| |
| eor $A2,$A2,$A0 |
| eor $B2,$B2,$B0 |
| eor $C2,$C2,$C0 |
| eor $D2,$D2,$D0 |
| st1.8 {$A2-$D2},[$out],#64 |
| |
| b.hi .Loop_outer_neon |
| |
| ldp x19,x20,[x29,#16] |
| add sp,sp,#64 |
| ldp x21,x22,[x29,#32] |
| ldp x23,x24,[x29,#48] |
| ldp x25,x26,[x29,#64] |
| ldp x27,x28,[x29,#80] |
| ldp x29,x30,[sp],#96 |
| ret |
| |
| .Ltail_neon: |
| add $len,$len,#256 |
| cmp $len,#64 |
| b.lo .Less_than_64 |
| |
| add @x[0],@x[0],@x[1],lsl#32 // pack |
| add @x[2],@x[2],@x[3],lsl#32 |
| ldp @x[1],@x[3],[$inp,#0] // load input |
| add @x[4],@x[4],@x[5],lsl#32 |
| add @x[6],@x[6],@x[7],lsl#32 |
| ldp @x[5],@x[7],[$inp,#16] |
| add @x[8],@x[8],@x[9],lsl#32 |
| add @x[10],@x[10],@x[11],lsl#32 |
| ldp @x[9],@x[11],[$inp,#32] |
| add @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 $inp,$inp,#64 |
| #ifdef __ARMEB__ |
| rev @x[0],@x[0] |
| rev @x[2],@x[2] |
| rev @x[4],@x[4] |
| rev @x[6],@x[6] |
| rev @x[8],@x[8] |
| rev @x[10],@x[10] |
| rev @x[12],@x[12] |
| rev @x[14],@x[14] |
| #endif |
| eor @x[0],@x[0],@x[1] |
| eor @x[2],@x[2],@x[3] |
| eor @x[4],@x[4],@x[5] |
| eor @x[6],@x[6],@x[7] |
| eor @x[8],@x[8],@x[9] |
| eor @x[10],@x[10],@x[11] |
| eor @x[12],@x[12],@x[13] |
| eor @x[14],@x[14],@x[15] |
| |
| stp @x[0],@x[2],[$out,#0] // store output |
| add @d[6],@d[6],#4 // increment counter |
| stp @x[4],@x[6],[$out,#16] |
| stp @x[8],@x[10],[$out,#32] |
| stp @x[12],@x[14],[$out,#48] |
| add $out,$out,#64 |
| b.eq .Ldone_neon |
| sub $len,$len,#64 |
| cmp $len,#64 |
| b.lo .Less_than_128 |
| |
| ld1.8 {$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 |
| b.eq .Ldone_neon |
| sub $len,$len,#64 |
| cmp $len,#64 |
| b.lo .Less_than_192 |
| |
| ld1.8 {$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 |
| b.eq .Ldone_neon |
| 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: |
| sub $out,$out,#1 |
| add $inp,$inp,$len |
| add $out,$out,$len |
| add $ctr,sp,$len |
| neg $len,$len |
| |
| .Loop_tail_neon: |
| ldrb w10,[$inp,$len] |
| ldrb w11,[$ctr,$len] |
| add $len,$len,#1 |
| eor w10,w10,w11 |
| strb w10,[$out,$len] |
| cbnz $len,.Loop_tail_neon |
| |
| stp xzr,xzr,[sp,#0] |
| stp xzr,xzr,[sp,#16] |
| stp xzr,xzr,[sp,#32] |
| stp xzr,xzr,[sp,#48] |
| |
| .Ldone_neon: |
| ldp x19,x20,[x29,#16] |
| add sp,sp,#64 |
| ldp x21,x22,[x29,#32] |
| ldp x23,x24,[x29,#48] |
| ldp x25,x26,[x29,#64] |
| ldp x27,x28,[x29,#80] |
| ldp x29,x30,[sp],#96 |
| ret |
| .size ChaCha20_neon,.-ChaCha20_neon |
| ___ |
| { |
| my ($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)); |
| |
| $code.=<<___; |
| .type ChaCha20_512_neon,%function |
| .align 5 |
| ChaCha20_512_neon: |
| stp x29,x30,[sp,#-96]! |
| add x29,sp,#0 |
| |
| adrp @x[0],:pg_hi21:.Lsigma |
| add @x[0],@x[0],:lo12:.Lsigma |
| stp x19,x20,[sp,#16] |
| stp x21,x22,[sp,#32] |
| stp x23,x24,[sp,#48] |
| stp x25,x26,[sp,#64] |
| stp x27,x28,[sp,#80] |
| |
| .L512_or_more_neon: |
| sub sp,sp,#128+64 |
| |
| ldp @d[0],@d[1],[@x[0]] // load sigma |
| ld1 {@K[0]},[@x[0]],#16 |
| ldp @d[2],@d[3],[$key] // load key |
| ldp @d[4],@d[5],[$key,#16] |
| ld1 {@K[1],@K[2]},[$key] |
| ldp @d[6],@d[7],[$ctr] // load counter |
| ld1 {@K[3]},[$ctr] |
| ld1 {$ONE},[@x[0]] |
| #ifdef __ARMEB__ |
| rev64 @K[0],@K[0] |
| ror @d[2],@d[2],#32 |
| ror @d[3],@d[3],#32 |
| ror @d[4],@d[4],#32 |
| ror @d[5],@d[5],#32 |
| ror @d[6],@d[6],#32 |
| ror @d[7],@d[7],#32 |
| #endif |
| add @K[3],@K[3],$ONE // += 1 |
| stp @K[0],@K[1],[sp,#0] // off-load key block, invariant part |
| add @K[3],@K[3],$ONE // not typo |
| str @K[2],[sp,#32] |
| add @K[4],@K[3],$ONE |
| add @K[5],@K[4],$ONE |
| add @K[6],@K[5],$ONE |
| shl $ONE,$ONE,#2 // 1 -> 4 |
| |
| stp d8,d9,[sp,#128+0] // meet ABI requirements |
| stp d10,d11,[sp,#128+16] |
| stp d12,d13,[sp,#128+32] |
| stp d14,d15,[sp,#128+48] |
| |
| sub $len,$len,#512 // not typo |
| |
| .Loop_outer_512_neon: |
| mov $A0,@K[0] |
| mov $A1,@K[0] |
| mov $A2,@K[0] |
| mov $A3,@K[0] |
| mov $A4,@K[0] |
| mov $A5,@K[0] |
| mov $B0,@K[1] |
| mov.32 @x[0],@d[0] // unpack key block |
| mov $B1,@K[1] |
| lsr @x[1],@d[0],#32 |
| mov $B2,@K[1] |
| mov.32 @x[2],@d[1] |
| mov $B3,@K[1] |
| lsr @x[3],@d[1],#32 |
| mov $B4,@K[1] |
| mov.32 @x[4],@d[2] |
| mov $B5,@K[1] |
| lsr @x[5],@d[2],#32 |
| mov $D0,@K[3] |
| mov.32 @x[6],@d[3] |
| mov $D1,@K[4] |
| lsr @x[7],@d[3],#32 |
| mov $D2,@K[5] |
| mov.32 @x[8],@d[4] |
| mov $D3,@K[6] |
| lsr @x[9],@d[4],#32 |
| mov $C0,@K[2] |
| mov.32 @x[10],@d[5] |
| mov $C1,@K[2] |
| lsr @x[11],@d[5],#32 |
| add $D4,$D0,$ONE // +4 |
| mov.32 @x[12],@d[6] |
| add $D5,$D1,$ONE // +4 |
| lsr @x[13],@d[6],#32 |
| mov $C2,@K[2] |
| mov.32 @x[14],@d[7] |
| mov $C3,@K[2] |
| lsr @x[15],@d[7],#32 |
| 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] |
| |
| mov $ctr,#5 |
| subs $len,$len,#512 |
| .Loop_upper_neon: |
| sub $ctr,$ctr,#1 |
| ___ |
| my @thread0=&NEONROUND($A0,$B0,$C0,$D0,$T0,0); |
| my @thread1=&NEONROUND($A1,$B1,$C1,$D1,$T1,0); |
| my @thread2=&NEONROUND($A2,$B2,$C2,$D2,$T2,0); |
| my @thread3=&NEONROUND($A3,$B3,$C3,$D3,$T3,0); |
| my @thread4=&NEONROUND($A4,$B4,$C4,$D4,$T4,0); |
| my @thread5=&NEONROUND($A5,$B5,$C5,$D5,$T5,0); |
| my @thread67=(&ROUND(0,4,8,12),&ROUND(0,5,10,15)); |
| my $diff = ($#thread0+1)*6 - $#thread67 - 1; |
| my $i = 0; |
| |
| foreach (@thread0) { |
| eval; eval(shift(@thread67)); |
| eval(shift(@thread1)); eval(shift(@thread67)); |
| eval(shift(@thread2)); eval(shift(@thread67)); |
| eval(shift(@thread3)); eval(shift(@thread67)); |
| eval(shift(@thread4)); eval(shift(@thread67)); |
| eval(shift(@thread5)); eval(shift(@thread67)); |
| } |
| |
| @thread0=&NEONROUND($A0,$B0,$C0,$D0,$T0,1); |
| @thread1=&NEONROUND($A1,$B1,$C1,$D1,$T1,1); |
| @thread2=&NEONROUND($A2,$B2,$C2,$D2,$T2,1); |
| @thread3=&NEONROUND($A3,$B3,$C3,$D3,$T3,1); |
| @thread4=&NEONROUND($A4,$B4,$C4,$D4,$T4,1); |
| @thread5=&NEONROUND($A5,$B5,$C5,$D5,$T5,1); |
| @thread67=(&ROUND(0,4,8,12),&ROUND(0,5,10,15)); |
| |
| foreach (@thread0) { |
| eval; eval(shift(@thread67)); |
| eval(shift(@thread1)); eval(shift(@thread67)); |
| eval(shift(@thread2)); eval(shift(@thread67)); |
| eval(shift(@thread3)); eval(shift(@thread67)); |
| eval(shift(@thread4)); eval(shift(@thread67)); |
| eval(shift(@thread5)); eval(shift(@thread67)); |
| } |
| $code.=<<___; |
| cbnz $ctr,.Loop_upper_neon |
| |
| add.32 @x[0],@x[0],@d[0] // accumulate key block |
| add @x[1],@x[1],@d[0],lsr#32 |
| add.32 @x[2],@x[2],@d[1] |
| add @x[3],@x[3],@d[1],lsr#32 |
| add.32 @x[4],@x[4],@d[2] |
| add @x[5],@x[5],@d[2],lsr#32 |
| add.32 @x[6],@x[6],@d[3] |
| add @x[7],@x[7],@d[3],lsr#32 |
| add.32 @x[8],@x[8],@d[4] |
| add @x[9],@x[9],@d[4],lsr#32 |
| add.32 @x[10],@x[10],@d[5] |
| add @x[11],@x[11],@d[5],lsr#32 |
| add.32 @x[12],@x[12],@d[6] |
| add @x[13],@x[13],@d[6],lsr#32 |
| add.32 @x[14],@x[14],@d[7] |
| add @x[15],@x[15],@d[7],lsr#32 |
| |
| add @x[0],@x[0],@x[1],lsl#32 // pack |
| add @x[2],@x[2],@x[3],lsl#32 |
| ldp @x[1],@x[3],[$inp,#0] // load input |
| add @x[4],@x[4],@x[5],lsl#32 |
| add @x[6],@x[6],@x[7],lsl#32 |
| ldp @x[5],@x[7],[$inp,#16] |
| add @x[8],@x[8],@x[9],lsl#32 |
| add @x[10],@x[10],@x[11],lsl#32 |
| ldp @x[9],@x[11],[$inp,#32] |
| add @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 $inp,$inp,#64 |
| #ifdef __ARMEB__ |
| rev @x[0],@x[0] |
| rev @x[2],@x[2] |
| rev @x[4],@x[4] |
| rev @x[6],@x[6] |
| rev @x[8],@x[8] |
| rev @x[10],@x[10] |
| rev @x[12],@x[12] |
| rev @x[14],@x[14] |
| #endif |
| eor @x[0],@x[0],@x[1] |
| eor @x[2],@x[2],@x[3] |
| eor @x[4],@x[4],@x[5] |
| eor @x[6],@x[6],@x[7] |
| eor @x[8],@x[8],@x[9] |
| eor @x[10],@x[10],@x[11] |
| eor @x[12],@x[12],@x[13] |
| eor @x[14],@x[14],@x[15] |
| |
| stp @x[0],@x[2],[$out,#0] // store output |
| add @d[6],@d[6],#1 // increment counter |
| mov.32 @x[0],@d[0] // unpack key block |
| lsr @x[1],@d[0],#32 |
| stp @x[4],@x[6],[$out,#16] |
| mov.32 @x[2],@d[1] |
| lsr @x[3],@d[1],#32 |
| stp @x[8],@x[10],[$out,#32] |
| mov.32 @x[4],@d[2] |
| lsr @x[5],@d[2],#32 |
| stp @x[12],@x[14],[$out,#48] |
| add $out,$out,#64 |
| mov.32 @x[6],@d[3] |
| lsr @x[7],@d[3],#32 |
| mov.32 @x[8],@d[4] |
| lsr @x[9],@d[4],#32 |
| mov.32 @x[10],@d[5] |
| lsr @x[11],@d[5],#32 |
| mov.32 @x[12],@d[6] |
| lsr @x[13],@d[6],#32 |
| mov.32 @x[14],@d[7] |
| lsr @x[15],@d[7],#32 |
| |
| mov $ctr,#5 |
| .Loop_lower_neon: |
| sub $ctr,$ctr,#1 |
| ___ |
| @thread0=&NEONROUND($A0,$B0,$C0,$D0,$T0,0); |
| @thread1=&NEONROUND($A1,$B1,$C1,$D1,$T1,0); |
| @thread2=&NEONROUND($A2,$B2,$C2,$D2,$T2,0); |
| @thread3=&NEONROUND($A3,$B3,$C3,$D3,$T3,0); |
| @thread4=&NEONROUND($A4,$B4,$C4,$D4,$T4,0); |
| @thread5=&NEONROUND($A5,$B5,$C5,$D5,$T5,0); |
| @thread67=(&ROUND(0,4,8,12),&ROUND(0,5,10,15)); |
| |
| foreach (@thread0) { |
| eval; eval(shift(@thread67)); |
| eval(shift(@thread1)); eval(shift(@thread67)); |
| eval(shift(@thread2)); eval(shift(@thread67)); |
| eval(shift(@thread3)); eval(shift(@thread67)); |
| eval(shift(@thread4)); eval(shift(@thread67)); |
| eval(shift(@thread5)); eval(shift(@thread67)); |
| } |
| |
| @thread0=&NEONROUND($A0,$B0,$C0,$D0,$T0,1); |
| @thread1=&NEONROUND($A1,$B1,$C1,$D1,$T1,1); |
| @thread2=&NEONROUND($A2,$B2,$C2,$D2,$T2,1); |
| @thread3=&NEONROUND($A3,$B3,$C3,$D3,$T3,1); |
| @thread4=&NEONROUND($A4,$B4,$C4,$D4,$T4,1); |
| @thread5=&NEONROUND($A5,$B5,$C5,$D5,$T5,1); |
| @thread67=(&ROUND(0,4,8,12),&ROUND(0,5,10,15)); |
| |
| foreach (@thread0) { |
| eval; eval(shift(@thread67)); |
| eval(shift(@thread1)); eval(shift(@thread67)); |
| eval(shift(@thread2)); eval(shift(@thread67)); |
| eval(shift(@thread3)); eval(shift(@thread67)); |
| eval(shift(@thread4)); eval(shift(@thread67)); |
| eval(shift(@thread5)); eval(shift(@thread67)); |
| } |
| $code.=<<___; |
| cbnz $ctr,.Loop_lower_neon |
| |
| add.32 @x[0],@x[0],@d[0] // accumulate key block |
| ldp @K[0],@K[1],[sp,#0] |
| add @x[1],@x[1],@d[0],lsr#32 |
| ldp @K[2],@K[3],[sp,#32] |
| add.32 @x[2],@x[2],@d[1] |
| ldp @K[4],@K[5],[sp,#64] |
| add @x[3],@x[3],@d[1],lsr#32 |
| add $A0,$A0,@K[0] |
| add.32 @x[4],@x[4],@d[2] |
| add $A1,$A1,@K[0] |
| add @x[5],@x[5],@d[2],lsr#32 |
| add $A2,$A2,@K[0] |
| add.32 @x[6],@x[6],@d[3] |
| add $A3,$A3,@K[0] |
| add @x[7],@x[7],@d[3],lsr#32 |
| add $A4,$A4,@K[0] |
| add.32 @x[8],@x[8],@d[4] |
| add $A5,$A5,@K[0] |
| add @x[9],@x[9],@d[4],lsr#32 |
| add $C0,$C0,@K[2] |
| add.32 @x[10],@x[10],@d[5] |
| add $C1,$C1,@K[2] |
| add @x[11],@x[11],@d[5],lsr#32 |
| add $C2,$C2,@K[2] |
| add.32 @x[12],@x[12],@d[6] |
| add $C3,$C3,@K[2] |
| add @x[13],@x[13],@d[6],lsr#32 |
| add $C4,$C4,@K[2] |
| add.32 @x[14],@x[14],@d[7] |
| add $C5,$C5,@K[2] |
| add @x[15],@x[15],@d[7],lsr#32 |
| add $D4,$D4,$ONE // +4 |
| add @x[0],@x[0],@x[1],lsl#32 // pack |
| add $D5,$D5,$ONE // +4 |
| add @x[2],@x[2],@x[3],lsl#32 |
| add $D0,$D0,@K[3] |
| ldp @x[1],@x[3],[$inp,#0] // load input |
| add $D1,$D1,@K[4] |
| add @x[4],@x[4],@x[5],lsl#32 |
| add $D2,$D2,@K[5] |
| add @x[6],@x[6],@x[7],lsl#32 |
| add $D3,$D3,@K[6] |
| ldp @x[5],@x[7],[$inp,#16] |
| add $D4,$D4,@K[3] |
| add @x[8],@x[8],@x[9],lsl#32 |
| add $D5,$D5,@K[4] |
| add @x[10],@x[10],@x[11],lsl#32 |
| add $B0,$B0,@K[1] |
| ldp @x[9],@x[11],[$inp,#32] |
| add $B1,$B1,@K[1] |
| add @x[12],@x[12],@x[13],lsl#32 |
| add $B2,$B2,@K[1] |
| add @x[14],@x[14],@x[15],lsl#32 |
| add $B3,$B3,@K[1] |
| ldp @x[13],@x[15],[$inp,#48] |
| add $B4,$B4,@K[1] |
| add $inp,$inp,#64 |
| add $B5,$B5,@K[1] |
| |
| #ifdef __ARMEB__ |
| rev @x[0],@x[0] |
| rev @x[2],@x[2] |
| rev @x[4],@x[4] |
| rev @x[6],@x[6] |
| rev @x[8],@x[8] |
| rev @x[10],@x[10] |
| rev @x[12],@x[12] |
| rev @x[14],@x[14] |
| #endif |
| ld1.8 {$T0-$T3},[$inp],#64 |
| eor @x[0],@x[0],@x[1] |
| eor @x[2],@x[2],@x[3] |
| eor @x[4],@x[4],@x[5] |
| eor @x[6],@x[6],@x[7] |
| eor @x[8],@x[8],@x[9] |
| eor $A0,$A0,$T0 |
| eor @x[10],@x[10],@x[11] |
| eor $B0,$B0,$T1 |
| eor @x[12],@x[12],@x[13] |
| eor $C0,$C0,$T2 |
| eor @x[14],@x[14],@x[15] |
| eor $D0,$D0,$T3 |
| ld1.8 {$T0-$T3},[$inp],#64 |
| |
| stp @x[0],@x[2],[$out,#0] // store output |
| add @d[6],@d[6],#7 // increment counter |
| stp @x[4],@x[6],[$out,#16] |
| stp @x[8],@x[10],[$out,#32] |
| stp @x[12],@x[14],[$out,#48] |
| add $out,$out,#64 |
| st1.8 {$A0-$D0},[$out],#64 |
| |
| ld1.8 {$A0-$D0},[$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 {$A1-$D1},[$inp],#64 |
| eor $A2,$A2,$A0 |
| ldp @K[0],@K[1],[sp,#0] |
| eor $B2,$B2,$B0 |
| ldp @K[2],@K[3],[sp,#32] |
| eor $C2,$C2,$C0 |
| eor $D2,$D2,$D0 |
| st1.8 {$A2-$D2},[$out],#64 |
| |
| ld1.8 {$A2-$D2},[$inp],#64 |
| eor $A3,$A3,$A1 |
| eor $B3,$B3,$B1 |
| eor $C3,$C3,$C1 |
| eor $D3,$D3,$D1 |
| st1.8 {$A3-$D3},[$out],#64 |
| |
| ld1.8 {$A3-$D3},[$inp],#64 |
| eor $A4,$A4,$A2 |
| eor $B4,$B4,$B2 |
| eor $C4,$C4,$C2 |
| eor $D4,$D4,$D2 |
| st1.8 {$A4-$D4},[$out],#64 |
| |
| shl $A0,$ONE,#1 // 4 -> 8 |
| eor $A5,$A5,$A3 |
| eor $B5,$B5,$B3 |
| eor $C5,$C5,$C3 |
| eor $D5,$D5,$D3 |
| st1.8 {$A5-$D5},[$out],#64 |
| |
| add @K[3],@K[3],$A0 // += 8 |
| add @K[4],@K[4],$A0 |
| add @K[5],@K[5],$A0 |
| add @K[6],@K[6],$A0 |
| |
| b.hs .Loop_outer_512_neon |
| |
| adds $len,$len,#512 |
| ushr $A0,$ONE,#2 // 4 -> 1 |
| |
| 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] |
| |
| b.eq .Ldone_512_neon |
| |
| 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 |
| b.hs .Loop_outer_neon |
| |
| eor @K[1],@K[1],@K[1] |
| eor @K[2],@K[2],@K[2] |
| eor @K[3],@K[3],@K[3] |
| eor @K[4],@K[4],@K[4] |
| eor @K[5],@K[5],@K[5] |
| eor @K[6],@K[6],@K[6] |
| b .Loop_outer |
| |
| .Ldone_512_neon: |
| ldp x19,x20,[x29,#16] |
| add sp,sp,#128+64 |
| ldp x21,x22,[x29,#32] |
| ldp x23,x24,[x29,#48] |
| ldp x25,x26,[x29,#64] |
| ldp x27,x28,[x29,#80] |
| ldp x29,x30,[sp],#96 |
| ret |
| .size ChaCha20_512_neon,.-ChaCha20_512_neon |
| ___ |
| } |
| }}} |
| |
| 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 |
| (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 |
| (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; |
| |
| print $_,"\n"; |
| } |
| close STDOUT; # flush |
