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-rw-r--r--src/crypto/zinc/chacha20/chacha20-ppc.pl1355
1 files changed, 1355 insertions, 0 deletions
diff --git a/src/crypto/zinc/chacha20/chacha20-ppc.pl b/src/crypto/zinc/chacha20/chacha20-ppc.pl
new file mode 100644
index 0000000..07468c8
--- /dev/null
+++ b/src/crypto/zinc/chacha20/chacha20-ppc.pl
@@ -0,0 +1,1355 @@
+#! /usr/bin/env perl
+# SPDX-License-Identifier: GPL-2.0 OR BSD-3-Clause
+#
+# This code is taken from the OpenSSL project but the author, Andy Polyakov,
+# has relicensed it under the licenses specified in the SPDX header above.
+# The original headers, including the original license headers, are
+# included below for completeness.
+#
+# Copyright 2016-2018 The OpenSSL Project Authors. All Rights Reserved.
+#
+# Licensed under the Apache License 2.0 (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/.
+# ====================================================================
+#
+# October 2015
+#
+# ChaCha20 for PowerPC/AltiVec.
+#
+# June 2018
+#
+# Add VSX 2.07 code path. Original 3xAltiVec+1xIALU is well-suited for
+# processors that can't issue more than one vector instruction per
+# cycle. But POWER8 (and POWER9) can issue a pair, and vector-only 4x
+# interleave would perform better. Incidentally PowerISA 2.07 (first
+# implemented by POWER8) defined new usable instructions, hence 4xVSX
+# code path...
+#
+# Performance in cycles per byte out of large buffer.
+#
+# IALU/gcc-4.x 3xAltiVec+1xIALU 4xVSX
+#
+# Freescale e300 13.6/+115% - -
+# PPC74x0/G4e 6.81/+310% 3.81 -
+# PPC970/G5 9.29/+160% ? -
+# POWER7 8.62/+61% 3.35 -
+# POWER8 8.70/+51% 2.91 2.09
+# POWER9 8.80/+29% 4.44(*) 2.45(**)
+#
+# (*) this is trade-off result, it's possible to improve it, but
+# then it would negatively affect all others;
+# (**) POWER9 seems to be "allergic" to mixing vector and integer
+# instructions, which is why switch to vector-only code pays
+# off that much;
+
+$flavour = shift;
+
+if ($flavour =~ /64/) {
+ $SIZE_T =8;
+ $LRSAVE =2*$SIZE_T;
+ $STU ="stdu";
+ $POP ="ld";
+ $PUSH ="std";
+ $UCMP ="cmpld";
+} elsif ($flavour =~ /32/) {
+ $SIZE_T =4;
+ $LRSAVE =$SIZE_T;
+ $STU ="stwu";
+ $POP ="lwz";
+ $PUSH ="stw";
+ $UCMP ="cmplw";
+} else { die "nonsense $flavour"; }
+
+$LITTLE_ENDIAN = ($flavour=~/le$/) ? 1 : 0;
+
+$0 =~ m/(.*[\/\\])[^\/\\]+$/; $dir=$1;
+( $xlate="${dir}ppc-xlate.pl" and -f $xlate ) or
+( $xlate="${dir}../../perlasm/ppc-xlate.pl" and -f $xlate) or
+die "can't locate ppc-xlate.pl";
+
+open STDOUT,"| $^X $xlate $flavour ".shift || die "can't call $xlate: $!";
+
+$LOCALS=6*$SIZE_T;
+$FRAME=$LOCALS+64+18*$SIZE_T; # 64 is for local variables
+
+sub AUTOLOAD() # thunk [simplified] x86-style perlasm
+{ my $opcode = $AUTOLOAD; $opcode =~ s/.*:://; $opcode =~ s/_/\./;
+ $code .= "\t$opcode\t".join(',',@_)."\n";
+}
+
+my $sp = "r1";
+
+my ($out,$inp,$len,$key,$ctr) = map("r$_",(3..7));
+
+my @x=map("r$_",(16..31));
+my @d=map("r$_",(11,12,14,15));
+my @t=map("r$_",(7..10));
+
+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 (@x[$a0],@x[$a0],@x[$b0])",
+ "&add (@x[$a1],@x[$a1],@x[$b1])",
+ "&add (@x[$a2],@x[$a2],@x[$b2])",
+ "&add (@x[$a3],@x[$a3],@x[$b3])",
+ "&xor (@x[$d0],@x[$d0],@x[$a0])",
+ "&xor (@x[$d1],@x[$d1],@x[$a1])",
+ "&xor (@x[$d2],@x[$d2],@x[$a2])",
+ "&xor (@x[$d3],@x[$d3],@x[$a3])",
+ "&rotlwi (@x[$d0],@x[$d0],16)",
+ "&rotlwi (@x[$d1],@x[$d1],16)",
+ "&rotlwi (@x[$d2],@x[$d2],16)",
+ "&rotlwi (@x[$d3],@x[$d3],16)",
+
+ "&add (@x[$c0],@x[$c0],@x[$d0])",
+ "&add (@x[$c1],@x[$c1],@x[$d1])",
+ "&add (@x[$c2],@x[$c2],@x[$d2])",
+ "&add (@x[$c3],@x[$c3],@x[$d3])",
+ "&xor (@x[$b0],@x[$b0],@x[$c0])",
+ "&xor (@x[$b1],@x[$b1],@x[$c1])",
+ "&xor (@x[$b2],@x[$b2],@x[$c2])",
+ "&xor (@x[$b3],@x[$b3],@x[$c3])",
+ "&rotlwi (@x[$b0],@x[$b0],12)",
+ "&rotlwi (@x[$b1],@x[$b1],12)",
+ "&rotlwi (@x[$b2],@x[$b2],12)",
+ "&rotlwi (@x[$b3],@x[$b3],12)",
+
+ "&add (@x[$a0],@x[$a0],@x[$b0])",
+ "&add (@x[$a1],@x[$a1],@x[$b1])",
+ "&add (@x[$a2],@x[$a2],@x[$b2])",
+ "&add (@x[$a3],@x[$a3],@x[$b3])",
+ "&xor (@x[$d0],@x[$d0],@x[$a0])",
+ "&xor (@x[$d1],@x[$d1],@x[$a1])",
+ "&xor (@x[$d2],@x[$d2],@x[$a2])",
+ "&xor (@x[$d3],@x[$d3],@x[$a3])",
+ "&rotlwi (@x[$d0],@x[$d0],8)",
+ "&rotlwi (@x[$d1],@x[$d1],8)",
+ "&rotlwi (@x[$d2],@x[$d2],8)",
+ "&rotlwi (@x[$d3],@x[$d3],8)",
+
+ "&add (@x[$c0],@x[$c0],@x[$d0])",
+ "&add (@x[$c1],@x[$c1],@x[$d1])",
+ "&add (@x[$c2],@x[$c2],@x[$d2])",
+ "&add (@x[$c3],@x[$c3],@x[$d3])",
+ "&xor (@x[$b0],@x[$b0],@x[$c0])",
+ "&xor (@x[$b1],@x[$b1],@x[$c1])",
+ "&xor (@x[$b2],@x[$b2],@x[$c2])",
+ "&xor (@x[$b3],@x[$b3],@x[$c3])",
+ "&rotlwi (@x[$b0],@x[$b0],7)",
+ "&rotlwi (@x[$b1],@x[$b1],7)",
+ "&rotlwi (@x[$b2],@x[$b2],7)",
+ "&rotlwi (@x[$b3],@x[$b3],7)"
+ );
+}
+
+$code.=<<___;
+.machine "any"
+.text
+
+.globl .ChaCha20_ctr32_int
+.align 5
+.ChaCha20_ctr32_int:
+__ChaCha20_ctr32_int:
+ ${UCMP}i $len,0
+ beqlr-
+
+ $STU $sp,-$FRAME($sp)
+ mflr r0
+
+ $PUSH r14,`$FRAME-$SIZE_T*18`($sp)
+ $PUSH r15,`$FRAME-$SIZE_T*17`($sp)
+ $PUSH r16,`$FRAME-$SIZE_T*16`($sp)
+ $PUSH r17,`$FRAME-$SIZE_T*15`($sp)
+ $PUSH r18,`$FRAME-$SIZE_T*14`($sp)
+ $PUSH r19,`$FRAME-$SIZE_T*13`($sp)
+ $PUSH r20,`$FRAME-$SIZE_T*12`($sp)
+ $PUSH r21,`$FRAME-$SIZE_T*11`($sp)
+ $PUSH r22,`$FRAME-$SIZE_T*10`($sp)
+ $PUSH r23,`$FRAME-$SIZE_T*9`($sp)
+ $PUSH r24,`$FRAME-$SIZE_T*8`($sp)
+ $PUSH r25,`$FRAME-$SIZE_T*7`($sp)
+ $PUSH r26,`$FRAME-$SIZE_T*6`($sp)
+ $PUSH r27,`$FRAME-$SIZE_T*5`($sp)
+ $PUSH r28,`$FRAME-$SIZE_T*4`($sp)
+ $PUSH r29,`$FRAME-$SIZE_T*3`($sp)
+ $PUSH r30,`$FRAME-$SIZE_T*2`($sp)
+ $PUSH r31,`$FRAME-$SIZE_T*1`($sp)
+ $PUSH r0,`$FRAME+$LRSAVE`($sp)
+
+ lwz @d[0],0($ctr) # load counter
+ lwz @d[1],4($ctr)
+ lwz @d[2],8($ctr)
+ lwz @d[3],12($ctr)
+
+ bl __ChaCha20_1x
+
+ $POP r0,`$FRAME+$LRSAVE`($sp)
+ $POP r14,`$FRAME-$SIZE_T*18`($sp)
+ $POP r15,`$FRAME-$SIZE_T*17`($sp)
+ $POP r16,`$FRAME-$SIZE_T*16`($sp)
+ $POP r17,`$FRAME-$SIZE_T*15`($sp)
+ $POP r18,`$FRAME-$SIZE_T*14`($sp)
+ $POP r19,`$FRAME-$SIZE_T*13`($sp)
+ $POP r20,`$FRAME-$SIZE_T*12`($sp)
+ $POP r21,`$FRAME-$SIZE_T*11`($sp)
+ $POP r22,`$FRAME-$SIZE_T*10`($sp)
+ $POP r23,`$FRAME-$SIZE_T*9`($sp)
+ $POP r24,`$FRAME-$SIZE_T*8`($sp)
+ $POP r25,`$FRAME-$SIZE_T*7`($sp)
+ $POP r26,`$FRAME-$SIZE_T*6`($sp)
+ $POP r27,`$FRAME-$SIZE_T*5`($sp)
+ $POP r28,`$FRAME-$SIZE_T*4`($sp)
+ $POP r29,`$FRAME-$SIZE_T*3`($sp)
+ $POP r30,`$FRAME-$SIZE_T*2`($sp)
+ $POP r31,`$FRAME-$SIZE_T*1`($sp)
+ mtlr r0
+ addi $sp,$sp,$FRAME
+ blr
+ .long 0
+ .byte 0,12,4,1,0x80,18,5,0
+ .long 0
+.size .ChaCha20_ctr32_int,.-.ChaCha20_ctr32_int
+
+.align 5
+__ChaCha20_1x:
+Loop_outer:
+ lis @x[0],0x6170 # synthesize sigma
+ lis @x[1],0x3320
+ lis @x[2],0x7962
+ lis @x[3],0x6b20
+ ori @x[0],@x[0],0x7865
+ ori @x[1],@x[1],0x646e
+ ori @x[2],@x[2],0x2d32
+ ori @x[3],@x[3],0x6574
+
+ li r0,10 # inner loop counter
+ lwz @x[4],0($key) # load key
+ lwz @x[5],4($key)
+ lwz @x[6],8($key)
+ lwz @x[7],12($key)
+ lwz @x[8],16($key)
+ mr @x[12],@d[0] # copy counter
+ lwz @x[9],20($key)
+ mr @x[13],@d[1]
+ lwz @x[10],24($key)
+ mr @x[14],@d[2]
+ lwz @x[11],28($key)
+ mr @x[15],@d[3]
+
+ mr @t[0],@x[4]
+ mr @t[1],@x[5]
+ mr @t[2],@x[6]
+ mr @t[3],@x[7]
+
+ mtctr r0
+Loop:
+___
+ foreach (&ROUND(0, 4, 8,12)) { eval; }
+ foreach (&ROUND(0, 5,10,15)) { eval; }
+$code.=<<___;
+ bdnz Loop
+
+ subic $len,$len,64 # $len-=64
+ addi @x[0],@x[0],0x7865 # accumulate key block
+ addi @x[1],@x[1],0x646e
+ addi @x[2],@x[2],0x2d32
+ addi @x[3],@x[3],0x6574
+ addis @x[0],@x[0],0x6170
+ addis @x[1],@x[1],0x3320
+ addis @x[2],@x[2],0x7962
+ addis @x[3],@x[3],0x6b20
+
+ subfe. r0,r0,r0 # borrow?-1:0
+ add @x[4],@x[4],@t[0]
+ lwz @t[0],16($key)
+ add @x[5],@x[5],@t[1]
+ lwz @t[1],20($key)
+ add @x[6],@x[6],@t[2]
+ lwz @t[2],24($key)
+ add @x[7],@x[7],@t[3]
+ lwz @t[3],28($key)
+ add @x[8],@x[8],@t[0]
+ add @x[9],@x[9],@t[1]
+ add @x[10],@x[10],@t[2]
+ add @x[11],@x[11],@t[3]
+
+ add @x[12],@x[12],@d[0]
+ add @x[13],@x[13],@d[1]
+ add @x[14],@x[14],@d[2]
+ add @x[15],@x[15],@d[3]
+ addi @d[0],@d[0],1 # increment counter
+___
+if (!$LITTLE_ENDIAN) { for($i=0;$i<16;$i++) { # flip byte order
+$code.=<<___;
+ mr @t[$i&3],@x[$i]
+ rotlwi @x[$i],@x[$i],8
+ rlwimi @x[$i],@t[$i&3],24,0,7
+ rlwimi @x[$i],@t[$i&3],24,16,23
+___
+} }
+$code.=<<___;
+ bne Ltail # $len-=64 borrowed
+
+ lwz @t[0],0($inp) # load input, aligned or not
+ lwz @t[1],4($inp)
+ ${UCMP}i $len,0 # done already?
+ lwz @t[2],8($inp)
+ lwz @t[3],12($inp)
+ xor @x[0],@x[0],@t[0] # xor with input
+ lwz @t[0],16($inp)
+ xor @x[1],@x[1],@t[1]
+ lwz @t[1],20($inp)
+ xor @x[2],@x[2],@t[2]
+ lwz @t[2],24($inp)
+ xor @x[3],@x[3],@t[3]
+ lwz @t[3],28($inp)
+ xor @x[4],@x[4],@t[0]
+ lwz @t[0],32($inp)
+ xor @x[5],@x[5],@t[1]
+ lwz @t[1],36($inp)
+ xor @x[6],@x[6],@t[2]
+ lwz @t[2],40($inp)
+ xor @x[7],@x[7],@t[3]
+ lwz @t[3],44($inp)
+ xor @x[8],@x[8],@t[0]
+ lwz @t[0],48($inp)
+ xor @x[9],@x[9],@t[1]
+ lwz @t[1],52($inp)
+ xor @x[10],@x[10],@t[2]
+ lwz @t[2],56($inp)
+ xor @x[11],@x[11],@t[3]
+ lwz @t[3],60($inp)
+ xor @x[12],@x[12],@t[0]
+ stw @x[0],0($out) # store output, aligned or not
+ xor @x[13],@x[13],@t[1]
+ stw @x[1],4($out)
+ xor @x[14],@x[14],@t[2]
+ stw @x[2],8($out)
+ xor @x[15],@x[15],@t[3]
+ stw @x[3],12($out)
+ stw @x[4],16($out)
+ stw @x[5],20($out)
+ stw @x[6],24($out)
+ stw @x[7],28($out)
+ stw @x[8],32($out)
+ stw @x[9],36($out)
+ stw @x[10],40($out)
+ stw @x[11],44($out)
+ stw @x[12],48($out)
+ stw @x[13],52($out)
+ stw @x[14],56($out)
+ addi $inp,$inp,64
+ stw @x[15],60($out)
+ addi $out,$out,64
+
+ bne Loop_outer
+
+ blr
+
+.align 4
+Ltail:
+ addi $len,$len,64 # restore tail length
+ subi $inp,$inp,1 # prepare for *++ptr
+ subi $out,$out,1
+ addi @t[0],$sp,$LOCALS-1
+ mtctr $len
+
+ stw @x[0],`$LOCALS+0`($sp) # save whole block to stack
+ stw @x[1],`$LOCALS+4`($sp)
+ stw @x[2],`$LOCALS+8`($sp)
+ stw @x[3],`$LOCALS+12`($sp)
+ stw @x[4],`$LOCALS+16`($sp)
+ stw @x[5],`$LOCALS+20`($sp)
+ stw @x[6],`$LOCALS+24`($sp)
+ stw @x[7],`$LOCALS+28`($sp)
+ stw @x[8],`$LOCALS+32`($sp)
+ stw @x[9],`$LOCALS+36`($sp)
+ stw @x[10],`$LOCALS+40`($sp)
+ stw @x[11],`$LOCALS+44`($sp)
+ stw @x[12],`$LOCALS+48`($sp)
+ stw @x[13],`$LOCALS+52`($sp)
+ stw @x[14],`$LOCALS+56`($sp)
+ stw @x[15],`$LOCALS+60`($sp)
+
+Loop_tail: # byte-by-byte loop
+ lbzu @d[0],1($inp)
+ lbzu @x[0],1(@t[0])
+ xor @d[1],@d[0],@x[0]
+ stbu @d[1],1($out)
+ bdnz Loop_tail
+
+ stw $sp,`$LOCALS+0`($sp) # wipe block on stack
+ stw $sp,`$LOCALS+4`($sp)
+ stw $sp,`$LOCALS+8`($sp)
+ stw $sp,`$LOCALS+12`($sp)
+ stw $sp,`$LOCALS+16`($sp)
+ stw $sp,`$LOCALS+20`($sp)
+ stw $sp,`$LOCALS+24`($sp)
+ stw $sp,`$LOCALS+28`($sp)
+ stw $sp,`$LOCALS+32`($sp)
+ stw $sp,`$LOCALS+36`($sp)
+ stw $sp,`$LOCALS+40`($sp)
+ stw $sp,`$LOCALS+44`($sp)
+ stw $sp,`$LOCALS+48`($sp)
+ stw $sp,`$LOCALS+52`($sp)
+ stw $sp,`$LOCALS+56`($sp)
+ stw $sp,`$LOCALS+60`($sp)
+
+ blr
+ .long 0
+ .byte 0,12,0x14,0,0,0,0,0
+___
+
+{{{
+my ($A0,$B0,$C0,$D0,$A1,$B1,$C1,$D1,$A2,$B2,$C2,$D2)
+ = map("v$_",(0..11));
+my @K = map("v$_",(12..17));
+my ($FOUR,$sixteen,$twenty4) = map("v$_",(18..19,23));
+my ($inpperm,$outperm,$outmask) = map("v$_",(24..26));
+my @D = map("v$_",(27..31));
+my ($twelve,$seven,$T0,$T1) = @D;
+
+my $FRAME=$LOCALS+64+10*16+18*$SIZE_T; # 10*16 is for v23-v31 offload
+
+sub VMXROUND {
+my $odd = pop;
+my ($a,$b,$c,$d)=@_;
+
+ (
+ "&vadduwm ('$a','$a','$b')",
+ "&vxor ('$d','$d','$a')",
+ "&vperm ('$d','$d','$d','$sixteen')",
+
+ "&vadduwm ('$c','$c','$d')",
+ "&vxor ('$b','$b','$c')",
+ "&vrlw ('$b','$b','$twelve')",
+
+ "&vadduwm ('$a','$a','$b')",
+ "&vxor ('$d','$d','$a')",
+ "&vperm ('$d','$d','$d','$twenty4')",
+
+ "&vadduwm ('$c','$c','$d')",
+ "&vxor ('$b','$b','$c')",
+ "&vrlw ('$b','$b','$seven')",
+
+ "&vrldoi ('$c','$c',8)",
+ "&vrldoi ('$b','$b',$odd?4:12)",
+ "&vrldoi ('$d','$d',$odd?12:4)"
+ );
+}
+
+$code.=<<___;
+
+.globl .ChaCha20_ctr32_vmx
+.align 5
+.ChaCha20_ctr32_vmx:
+ ${UCMP}i $len,256
+ blt __ChaCha20_ctr32_int
+
+ $STU $sp,-$FRAME($sp)
+ mflr r0
+ li r10,`15+$LOCALS+64`
+ li r11,`31+$LOCALS+64`
+ mfspr r12,256
+ stvx v23,r10,$sp
+ addi r10,r10,32
+ stvx v24,r11,$sp
+ addi r11,r11,32
+ stvx v25,r10,$sp
+ addi r10,r10,32
+ stvx v26,r11,$sp
+ addi r11,r11,32
+ stvx v27,r10,$sp
+ addi r10,r10,32
+ stvx v28,r11,$sp
+ addi r11,r11,32
+ stvx v29,r10,$sp
+ addi r10,r10,32
+ stvx v30,r11,$sp
+ stvx v31,r10,$sp
+ stw r12,`$FRAME-$SIZE_T*18-4`($sp) # save vrsave
+ $PUSH r14,`$FRAME-$SIZE_T*18`($sp)
+ $PUSH r15,`$FRAME-$SIZE_T*17`($sp)
+ $PUSH r16,`$FRAME-$SIZE_T*16`($sp)
+ $PUSH r17,`$FRAME-$SIZE_T*15`($sp)
+ $PUSH r18,`$FRAME-$SIZE_T*14`($sp)
+ $PUSH r19,`$FRAME-$SIZE_T*13`($sp)
+ $PUSH r20,`$FRAME-$SIZE_T*12`($sp)
+ $PUSH r21,`$FRAME-$SIZE_T*11`($sp)
+ $PUSH r22,`$FRAME-$SIZE_T*10`($sp)
+ $PUSH r23,`$FRAME-$SIZE_T*9`($sp)
+ $PUSH r24,`$FRAME-$SIZE_T*8`($sp)
+ $PUSH r25,`$FRAME-$SIZE_T*7`($sp)
+ $PUSH r26,`$FRAME-$SIZE_T*6`($sp)
+ $PUSH r27,`$FRAME-$SIZE_T*5`($sp)
+ $PUSH r28,`$FRAME-$SIZE_T*4`($sp)
+ $PUSH r29,`$FRAME-$SIZE_T*3`($sp)
+ $PUSH r30,`$FRAME-$SIZE_T*2`($sp)
+ $PUSH r31,`$FRAME-$SIZE_T*1`($sp)
+ li r12,-4096+511
+ $PUSH r0, `$FRAME+$LRSAVE`($sp)
+ mtspr 256,r12 # preserve 29 AltiVec registers
+
+ bl Lconsts # returns pointer Lsigma in r12
+ li @x[0],16
+ li @x[1],32
+ li @x[2],48
+ li @x[3],64
+ li @x[4],31 # 31 is not a typo
+ li @x[5],15 # nor is 15
+
+ lvx @K[1],0,$key # load key
+ ?lvsr $T0,0,$key # prepare unaligned load
+ lvx @K[2],@x[0],$key
+ lvx @D[0],@x[4],$key
+
+ lvx @K[3],0,$ctr # load counter
+ ?lvsr $T1,0,$ctr # prepare unaligned load
+ lvx @D[1],@x[5],$ctr
+
+ lvx @K[0],0,r12 # load constants
+ lvx @K[5],@x[0],r12 # one
+ lvx $FOUR,@x[1],r12
+ lvx $sixteen,@x[2],r12
+ lvx $twenty4,@x[3],r12
+
+ ?vperm @K[1],@K[2],@K[1],$T0 # align key
+ ?vperm @K[2],@D[0],@K[2],$T0
+ ?vperm @K[3],@D[1],@K[3],$T1 # align counter
+
+ lwz @d[0],0($ctr) # load counter to GPR
+ lwz @d[1],4($ctr)
+ vadduwm @K[3],@K[3],@K[5] # adjust AltiVec counter
+ lwz @d[2],8($ctr)
+ vadduwm @K[4],@K[3],@K[5]
+ lwz @d[3],12($ctr)
+ vadduwm @K[5],@K[4],@K[5]
+
+ vxor $T0,$T0,$T0 # 0x00..00
+ vspltisw $outmask,-1 # 0xff..ff
+ ?lvsr $inpperm,0,$inp # prepare for unaligned load
+ ?lvsl $outperm,0,$out # prepare for unaligned store
+ ?vperm $outmask,$outmask,$T0,$outperm
+
+ be?lvsl $T0,0,@x[0] # 0x00..0f
+ be?vspltisb $T1,3 # 0x03..03
+ be?vxor $T0,$T0,$T1 # swap bytes within words
+ be?vxor $outperm,$outperm,$T1
+ be?vperm $inpperm,$inpperm,$inpperm,$T0
+
+ li r0,10 # inner loop counter
+ b Loop_outer_vmx
+
+.align 4
+Loop_outer_vmx:
+ lis @x[0],0x6170 # synthesize sigma
+ lis @x[1],0x3320
+ vmr $A0,@K[0]
+ lis @x[2],0x7962
+ lis @x[3],0x6b20
+ vmr $A1,@K[0]
+ ori @x[0],@x[0],0x7865
+ ori @x[1],@x[1],0x646e
+ vmr $A2,@K[0]
+ ori @x[2],@x[2],0x2d32
+ ori @x[3],@x[3],0x6574
+ vmr $B0,@K[1]
+
+ lwz @x[4],0($key) # load key to GPR
+ vmr $B1,@K[1]
+ lwz @x[5],4($key)
+ vmr $B2,@K[1]
+ lwz @x[6],8($key)
+ vmr $C0,@K[2]
+ lwz @x[7],12($key)
+ vmr $C1,@K[2]
+ lwz @x[8],16($key)
+ vmr $C2,@K[2]
+ mr @x[12],@d[0] # copy GPR counter
+ lwz @x[9],20($key)
+ vmr $D0,@K[3]
+ mr @x[13],@d[1]
+ lwz @x[10],24($key)
+ vmr $D1,@K[4]
+ mr @x[14],@d[2]
+ lwz @x[11],28($key)
+ vmr $D2,@K[5]
+ mr @x[15],@d[3]
+
+ mr @t[0],@x[4]
+ mr @t[1],@x[5]
+ mr @t[2],@x[6]
+ mr @t[3],@x[7]
+
+ vspltisw $twelve,12 # synthesize constants
+ vspltisw $seven,7
+
+ mtctr r0
+ nop
+Loop_vmx:
+___
+ my @thread0=&VMXROUND($A0,$B0,$C0,$D0,0);
+ my @thread1=&VMXROUND($A1,$B1,$C1,$D1,0);
+ my @thread2=&VMXROUND($A2,$B2,$C2,$D2,0);
+ my @thread3=&ROUND(0,4,8,12);
+
+ foreach (@thread0) {
+ eval;
+ eval(shift(@thread1));
+ eval(shift(@thread2));
+
+ eval(shift(@thread3));
+ eval(shift(@thread3));
+ eval(shift(@thread3));
+ }
+ foreach (@thread3) { eval; }
+
+ @thread0=&VMXROUND($A0,$B0,$C0,$D0,1);
+ @thread1=&VMXROUND($A1,$B1,$C1,$D1,1);
+ @thread2=&VMXROUND($A2,$B2,$C2,$D2,1);
+ @thread3=&ROUND(0,5,10,15);
+
+ foreach (@thread0) {
+ eval;
+ eval(shift(@thread1));
+ eval(shift(@thread2));
+
+ eval(shift(@thread3));
+ eval(shift(@thread3));
+ eval(shift(@thread3));
+ }
+ foreach (@thread3) { eval; }
+$code.=<<___;
+ bdnz Loop_vmx
+
+ subi $len,$len,256 # $len-=256
+ addi @x[0],@x[0],0x7865 # accumulate key block
+ addi @x[1],@x[1],0x646e
+ addi @x[2],@x[2],0x2d32
+ addi @x[3],@x[3],0x6574
+ addis @x[0],@x[0],0x6170
+ addis @x[1],@x[1],0x3320
+ addis @x[2],@x[2],0x7962
+ addis @x[3],@x[3],0x6b20
+ add @x[4],@x[4],@t[0]
+ lwz @t[0],16($key)
+ add @x[5],@x[5],@t[1]
+ lwz @t[1],20($key)
+ add @x[6],@x[6],@t[2]
+ lwz @t[2],24($key)
+ add @x[7],@x[7],@t[3]
+ lwz @t[3],28($key)
+ add @x[8],@x[8],@t[0]
+ add @x[9],@x[9],@t[1]
+ add @x[10],@x[10],@t[2]
+ add @x[11],@x[11],@t[3]
+ add @x[12],@x[12],@d[0]
+ add @x[13],@x[13],@d[1]
+ add @x[14],@x[14],@d[2]
+ add @x[15],@x[15],@d[3]
+
+ vadduwm $A0,$A0,@K[0] # accumulate key block
+ vadduwm $A1,$A1,@K[0]
+ vadduwm $A2,$A2,@K[0]
+ vadduwm $B0,$B0,@K[1]
+ vadduwm $B1,$B1,@K[1]
+ vadduwm $B2,$B2,@K[1]
+ vadduwm $C0,$C0,@K[2]
+ vadduwm $C1,$C1,@K[2]
+ vadduwm $C2,$C2,@K[2]
+ vadduwm $D0,$D0,@K[3]
+ vadduwm $D1,$D1,@K[4]
+ vadduwm $D2,$D2,@K[5]
+
+ addi @d[0],@d[0],4 # increment counter
+ vadduwm @K[3],@K[3],$FOUR
+ vadduwm @K[4],@K[4],$FOUR
+ vadduwm @K[5],@K[5],$FOUR
+
+___
+if (!$LITTLE_ENDIAN) { for($i=0;$i<16;$i++) { # flip byte order
+$code.=<<___;
+ mr @t[$i&3],@x[$i]
+ rotlwi @x[$i],@x[$i],8
+ rlwimi @x[$i],@t[$i&3],24,0,7
+ rlwimi @x[$i],@t[$i&3],24,16,23
+___
+} }
+$code.=<<___;
+ lwz @t[0],0($inp) # load input, aligned or not
+ lwz @t[1],4($inp)
+ lwz @t[2],8($inp)
+ lwz @t[3],12($inp)
+ xor @x[0],@x[0],@t[0] # xor with input
+ lwz @t[0],16($inp)
+ xor @x[1],@x[1],@t[1]
+ lwz @t[1],20($inp)
+ xor @x[2],@x[2],@t[2]
+ lwz @t[2],24($inp)
+ xor @x[3],@x[3],@t[3]
+ lwz @t[3],28($inp)
+ xor @x[4],@x[4],@t[0]
+ lwz @t[0],32($inp)
+ xor @x[5],@x[5],@t[1]
+ lwz @t[1],36($inp)
+ xor @x[6],@x[6],@t[2]
+ lwz @t[2],40($inp)
+ xor @x[7],@x[7],@t[3]
+ lwz @t[3],44($inp)
+ xor @x[8],@x[8],@t[0]
+ lwz @t[0],48($inp)
+ xor @x[9],@x[9],@t[1]
+ lwz @t[1],52($inp)
+ xor @x[10],@x[10],@t[2]
+ lwz @t[2],56($inp)
+ xor @x[11],@x[11],@t[3]
+ lwz @t[3],60($inp)
+ xor @x[12],@x[12],@t[0]
+ stw @x[0],0($out) # store output, aligned or not
+ xor @x[13],@x[13],@t[1]
+ stw @x[1],4($out)
+ xor @x[14],@x[14],@t[2]
+ stw @x[2],8($out)
+ xor @x[15],@x[15],@t[3]
+ stw @x[3],12($out)
+ addi $inp,$inp,64
+ stw @x[4],16($out)
+ li @t[0],16
+ stw @x[5],20($out)
+ li @t[1],32
+ stw @x[6],24($out)
+ li @t[2],48
+ stw @x[7],28($out)
+ li @t[3],64
+ stw @x[8],32($out)
+ stw @x[9],36($out)
+ stw @x[10],40($out)
+ stw @x[11],44($out)
+ stw @x[12],48($out)
+ stw @x[13],52($out)
+ stw @x[14],56($out)
+ stw @x[15],60($out)
+ addi $out,$out,64
+
+ lvx @D[0],0,$inp # load input
+ lvx @D[1],@t[0],$inp
+ lvx @D[2],@t[1],$inp
+ lvx @D[3],@t[2],$inp
+ lvx @D[4],@t[3],$inp
+ addi $inp,$inp,64
+
+ ?vperm @D[0],@D[1],@D[0],$inpperm # align input
+ ?vperm @D[1],@D[2],@D[1],$inpperm
+ ?vperm @D[2],@D[3],@D[2],$inpperm
+ ?vperm @D[3],@D[4],@D[3],$inpperm
+ vxor $A0,$A0,@D[0] # xor with input
+ vxor $B0,$B0,@D[1]
+ lvx @D[1],@t[0],$inp # keep loading input
+ vxor $C0,$C0,@D[2]
+ lvx @D[2],@t[1],$inp
+ vxor $D0,$D0,@D[3]
+ lvx @D[3],@t[2],$inp
+ lvx @D[0],@t[3],$inp
+ addi $inp,$inp,64
+ li @t[3],63 # 63 is not a typo
+ vperm $A0,$A0,$A0,$outperm # pre-misalign output
+ vperm $B0,$B0,$B0,$outperm
+ vperm $C0,$C0,$C0,$outperm
+ vperm $D0,$D0,$D0,$outperm
+
+ ?vperm @D[4],@D[1],@D[4],$inpperm # align input
+ ?vperm @D[1],@D[2],@D[1],$inpperm
+ ?vperm @D[2],@D[3],@D[2],$inpperm
+ ?vperm @D[3],@D[0],@D[3],$inpperm
+ vxor $A1,$A1,@D[4]
+ vxor $B1,$B1,@D[1]
+ lvx @D[1],@t[0],$inp # keep loading input
+ vxor $C1,$C1,@D[2]
+ lvx @D[2],@t[1],$inp
+ vxor $D1,$D1,@D[3]
+ lvx @D[3],@t[2],$inp
+ lvx @D[4],@t[3],$inp # redundant in aligned case
+ addi $inp,$inp,64
+ vperm $A1,$A1,$A1,$outperm # pre-misalign output
+ vperm $B1,$B1,$B1,$outperm
+ vperm $C1,$C1,$C1,$outperm
+ vperm $D1,$D1,$D1,$outperm
+
+ ?vperm @D[0],@D[1],@D[0],$inpperm # align input
+ ?vperm @D[1],@D[2],@D[1],$inpperm
+ ?vperm @D[2],@D[3],@D[2],$inpperm
+ ?vperm @D[3],@D[4],@D[3],$inpperm
+ vxor $A2,$A2,@D[0]
+ vxor $B2,$B2,@D[1]
+ vxor $C2,$C2,@D[2]
+ vxor $D2,$D2,@D[3]
+ vperm $A2,$A2,$A2,$outperm # pre-misalign output
+ vperm $B2,$B2,$B2,$outperm
+ vperm $C2,$C2,$C2,$outperm
+ vperm $D2,$D2,$D2,$outperm
+
+ andi. @x[1],$out,15 # is $out aligned?
+ mr @x[0],$out
+
+ vsel @D[0],$A0,$B0,$outmask # collect pre-misaligned output
+ vsel @D[1],$B0,$C0,$outmask
+ vsel @D[2],$C0,$D0,$outmask
+ vsel @D[3],$D0,$A1,$outmask
+ vsel $B0,$A1,$B1,$outmask
+ vsel $C0,$B1,$C1,$outmask
+ vsel $D0,$C1,$D1,$outmask
+ vsel $A1,$D1,$A2,$outmask
+ vsel $B1,$A2,$B2,$outmask
+ vsel $C1,$B2,$C2,$outmask
+ vsel $D1,$C2,$D2,$outmask
+
+ #stvx $A0,0,$out # take it easy on the edges
+ stvx @D[0],@t[0],$out # store output
+ stvx @D[1],@t[1],$out
+ stvx @D[2],@t[2],$out
+ addi $out,$out,64
+ stvx @D[3],0,$out
+ stvx $B0,@t[0],$out
+ stvx $C0,@t[1],$out
+ stvx $D0,@t[2],$out
+ addi $out,$out,64
+ stvx $A1,0,$out
+ stvx $B1,@t[0],$out
+ stvx $C1,@t[1],$out
+ stvx $D1,@t[2],$out
+ addi $out,$out,64
+
+ beq Laligned_vmx
+
+ sub @x[2],$out,@x[1] # in misaligned case edges
+ li @x[3],0 # are written byte-by-byte
+Lunaligned_tail_vmx:
+ stvebx $D2,@x[3],@x[2]
+ addi @x[3],@x[3],1
+ cmpw @x[3],@x[1]
+ bne Lunaligned_tail_vmx
+
+ sub @x[2],@x[0],@x[1]
+Lunaligned_head_vmx:
+ stvebx $A0,@x[1],@x[2]
+ cmpwi @x[1],15
+ addi @x[1],@x[1],1
+ bne Lunaligned_head_vmx
+
+ ${UCMP}i $len,255 # done with 256-byte blocks yet?
+ bgt Loop_outer_vmx
+
+ b Ldone_vmx
+
+.align 4
+Laligned_vmx:
+ stvx $A0,0,@x[0] # head hexaword was not stored
+
+ ${UCMP}i $len,255 # done with 256-byte blocks yet?
+ bgt Loop_outer_vmx
+ nop
+
+Ldone_vmx:
+ ${UCMP}i $len,0 # done yet?
+ bnel __ChaCha20_1x
+
+ lwz r12,`$FRAME-$SIZE_T*18-4`($sp) # pull vrsave
+ li r10,`15+$LOCALS+64`
+ li r11,`31+$LOCALS+64`
+ mtspr 256,r12 # restore vrsave
+ lvx v23,r10,$sp
+ addi r10,r10,32
+ lvx v24,r11,$sp
+ addi r11,r11,32
+ lvx v25,r10,$sp
+ addi r10,r10,32
+ lvx v26,r11,$sp
+ addi r11,r11,32
+ lvx v27,r10,$sp
+ addi r10,r10,32
+ lvx v28,r11,$sp
+ addi r11,r11,32
+ lvx v29,r10,$sp
+ addi r10,r10,32
+ lvx v30,r11,$sp
+ lvx v31,r10,$sp
+ $POP r0, `$FRAME+$LRSAVE`($sp)
+ $POP r14,`$FRAME-$SIZE_T*18`($sp)
+ $POP r15,`$FRAME-$SIZE_T*17`($sp)
+ $POP r16,`$FRAME-$SIZE_T*16`($sp)
+ $POP r17,`$FRAME-$SIZE_T*15`($sp)
+ $POP r18,`$FRAME-$SIZE_T*14`($sp)
+ $POP r19,`$FRAME-$SIZE_T*13`($sp)
+ $POP r20,`$FRAME-$SIZE_T*12`($sp)
+ $POP r21,`$FRAME-$SIZE_T*11`($sp)
+ $POP r22,`$FRAME-$SIZE_T*10`($sp)
+ $POP r23,`$FRAME-$SIZE_T*9`($sp)
+ $POP r24,`$FRAME-$SIZE_T*8`($sp)
+ $POP r25,`$FRAME-$SIZE_T*7`($sp)
+ $POP r26,`$FRAME-$SIZE_T*6`($sp)
+ $POP r27,`$FRAME-$SIZE_T*5`($sp)
+ $POP r28,`$FRAME-$SIZE_T*4`($sp)
+ $POP r29,`$FRAME-$SIZE_T*3`($sp)
+ $POP r30,`$FRAME-$SIZE_T*2`($sp)
+ $POP r31,`$FRAME-$SIZE_T*1`($sp)
+ mtlr r0
+ addi $sp,$sp,$FRAME
+ blr
+ .long 0
+ .byte 0,12,0x04,1,0x80,18,5,0
+ .long 0
+.size .ChaCha20_ctr32_vmx,.-.ChaCha20_ctr32_vmx
+___
+}}}
+{{{
+my ($xa0,$xa1,$xa2,$xa3, $xb0,$xb1,$xb2,$xb3,
+ $xc0,$xc1,$xc2,$xc3, $xd0,$xd1,$xd2,$xd3) = map("v$_",(0..15));
+my @K = map("v$_",(16..19));
+my $CTR = "v26";
+my ($xt0,$xt1,$xt2,$xt3) = map("v$_",(27..30));
+my ($sixteen,$twelve,$eight,$seven) = ($xt0,$xt1,$xt2,$xt3);
+my $beperm = "v31";
+
+my ($x00,$x10,$x20,$x30) = (0, map("r$_",(8..10)));
+
+my $FRAME=$LOCALS+64+7*16; # 7*16 is for v26-v31 offload
+
+sub VSX_lane_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));
+my @x=map("\"v$_\"",(0..15));
+
+ (
+ "&vadduwm (@x[$a0],@x[$a0],@x[$b0])", # Q1
+ "&vadduwm (@x[$a1],@x[$a1],@x[$b1])", # Q2
+ "&vadduwm (@x[$a2],@x[$a2],@x[$b2])", # Q3
+ "&vadduwm (@x[$a3],@x[$a3],@x[$b3])", # Q4
+ "&vxor (@x[$d0],@x[$d0],@x[$a0])",
+ "&vxor (@x[$d1],@x[$d1],@x[$a1])",
+ "&vxor (@x[$d2],@x[$d2],@x[$a2])",
+ "&vxor (@x[$d3],@x[$d3],@x[$a3])",
+ "&vrlw (@x[$d0],@x[$d0],'$sixteen')",
+ "&vrlw (@x[$d1],@x[$d1],'$sixteen')",
+ "&vrlw (@x[$d2],@x[$d2],'$sixteen')",
+ "&vrlw (@x[$d3],@x[$d3],'$sixteen')",
+
+ "&vadduwm (@x[$c0],@x[$c0],@x[$d0])",
+ "&vadduwm (@x[$c1],@x[$c1],@x[$d1])",
+ "&vadduwm (@x[$c2],@x[$c2],@x[$d2])",
+ "&vadduwm (@x[$c3],@x[$c3],@x[$d3])",
+ "&vxor (@x[$b0],@x[$b0],@x[$c0])",
+ "&vxor (@x[$b1],@x[$b1],@x[$c1])",
+ "&vxor (@x[$b2],@x[$b2],@x[$c2])",
+ "&vxor (@x[$b3],@x[$b3],@x[$c3])",
+ "&vrlw (@x[$b0],@x[$b0],'$twelve')",
+ "&vrlw (@x[$b1],@x[$b1],'$twelve')",
+ "&vrlw (@x[$b2],@x[$b2],'$twelve')",
+ "&vrlw (@x[$b3],@x[$b3],'$twelve')",
+
+ "&vadduwm (@x[$a0],@x[$a0],@x[$b0])",
+ "&vadduwm (@x[$a1],@x[$a1],@x[$b1])",
+ "&vadduwm (@x[$a2],@x[$a2],@x[$b2])",
+ "&vadduwm (@x[$a3],@x[$a3],@x[$b3])",
+ "&vxor (@x[$d0],@x[$d0],@x[$a0])",
+ "&vxor (@x[$d1],@x[$d1],@x[$a1])",
+ "&vxor (@x[$d2],@x[$d2],@x[$a2])",
+ "&vxor (@x[$d3],@x[$d3],@x[$a3])",
+ "&vrlw (@x[$d0],@x[$d0],'$eight')",
+ "&vrlw (@x[$d1],@x[$d1],'$eight')",
+ "&vrlw (@x[$d2],@x[$d2],'$eight')",
+ "&vrlw (@x[$d3],@x[$d3],'$eight')",
+
+ "&vadduwm (@x[$c0],@x[$c0],@x[$d0])",
+ "&vadduwm (@x[$c1],@x[$c1],@x[$d1])",
+ "&vadduwm (@x[$c2],@x[$c2],@x[$d2])",
+ "&vadduwm (@x[$c3],@x[$c3],@x[$d3])",
+ "&vxor (@x[$b0],@x[$b0],@x[$c0])",
+ "&vxor (@x[$b1],@x[$b1],@x[$c1])",
+ "&vxor (@x[$b2],@x[$b2],@x[$c2])",
+ "&vxor (@x[$b3],@x[$b3],@x[$c3])",
+ "&vrlw (@x[$b0],@x[$b0],'$seven')",
+ "&vrlw (@x[$b1],@x[$b1],'$seven')",
+ "&vrlw (@x[$b2],@x[$b2],'$seven')",
+ "&vrlw (@x[$b3],@x[$b3],'$seven')"
+ );
+}
+
+$code.=<<___;
+
+.globl .ChaCha20_ctr32_vsx
+.align 5
+.ChaCha20_ctr32_vsx:
+ $STU $sp,-$FRAME($sp)
+ mflr r0
+ li r10,`15+$LOCALS+64`
+ li r11,`31+$LOCALS+64`
+ mfspr r12,256
+ stvx v26,r10,$sp
+ addi r10,r10,32
+ stvx v27,r11,$sp
+ addi r11,r11,32
+ stvx v28,r10,$sp
+ addi r10,r10,32
+ stvx v29,r11,$sp
+ addi r11,r11,32
+ stvx v30,r10,$sp
+ stvx v31,r11,$sp
+ stw r12,`$FRAME-4`($sp) # save vrsave
+ li r12,-4096+63
+ $PUSH r0, `$FRAME+$LRSAVE`($sp)
+ mtspr 256,r12 # preserve 29 AltiVec registers
+
+ bl Lconsts # returns pointer Lsigma in r12
+ lvx_4w @K[0],0,r12 # load sigma
+ addi r12,r12,0x50
+ li $x10,16
+ li $x20,32
+ li $x30,48
+ li r11,64
+
+ lvx_4w @K[1],0,$key # load key
+ lvx_4w @K[2],$x10,$key
+ lvx_4w @K[3],0,$ctr # load counter
+
+ vxor $xt0,$xt0,$xt0
+ lvx_4w $xt1,r11,r12
+ vspltw $CTR,@K[3],0
+ vsldoi @K[3],@K[3],$xt0,4
+ vsldoi @K[3],$xt0,@K[3],12 # clear @K[3].word[0]
+ vadduwm $CTR,$CTR,$xt1
+
+ be?lvsl $beperm,0,$x10 # 0x00..0f
+ be?vspltisb $xt0,3 # 0x03..03
+ be?vxor $beperm,$beperm,$xt0 # swap bytes within words
+
+ li r0,10 # inner loop counter
+ mtctr r0
+ b Loop_outer_vsx
+
+.align 5
+Loop_outer_vsx:
+ lvx $xa0,$x00,r12 # load [smashed] sigma
+ lvx $xa1,$x10,r12
+ lvx $xa2,$x20,r12
+ lvx $xa3,$x30,r12
+
+ vspltw $xb0,@K[1],0 # smash the key
+ vspltw $xb1,@K[1],1
+ vspltw $xb2,@K[1],2
+ vspltw $xb3,@K[1],3
+
+ vspltw $xc0,@K[2],0
+ vspltw $xc1,@K[2],1
+ vspltw $xc2,@K[2],2
+ vspltw $xc3,@K[2],3
+
+ vmr $xd0,$CTR # smash the counter
+ vspltw $xd1,@K[3],1
+ vspltw $xd2,@K[3],2
+ vspltw $xd3,@K[3],3
+
+ vspltisw $sixteen,-16 # synthesize constants
+ vspltisw $twelve,12
+ vspltisw $eight,8
+ vspltisw $seven,7
+
+Loop_vsx:
+___
+ foreach (&VSX_lane_ROUND(0, 4, 8,12)) { eval; }
+ foreach (&VSX_lane_ROUND(0, 5,10,15)) { eval; }
+$code.=<<___;
+ bdnz Loop_vsx
+
+ vadduwm $xd0,$xd0,$CTR
+
+ vmrgew $xt0,$xa0,$xa1 # transpose data
+ vmrgew $xt1,$xa2,$xa3
+ vmrgow $xa0,$xa0,$xa1
+ vmrgow $xa2,$xa2,$xa3
+ vmrgew $xt2,$xb0,$xb1
+ vmrgew $xt3,$xb2,$xb3
+ vpermdi $xa1,$xa0,$xa2,0b00
+ vpermdi $xa3,$xa0,$xa2,0b11
+ vpermdi $xa0,$xt0,$xt1,0b00
+ vpermdi $xa2,$xt0,$xt1,0b11
+
+ vmrgow $xb0,$xb0,$xb1
+ vmrgow $xb2,$xb2,$xb3
+ vmrgew $xt0,$xc0,$xc1
+ vmrgew $xt1,$xc2,$xc3
+ vpermdi $xb1,$xb0,$xb2,0b00
+ vpermdi $xb3,$xb0,$xb2,0b11
+ vpermdi $xb0,$xt2,$xt3,0b00
+ vpermdi $xb2,$xt2,$xt3,0b11
+
+ vmrgow $xc0,$xc0,$xc1
+ vmrgow $xc2,$xc2,$xc3
+ vmrgew $xt2,$xd0,$xd1
+ vmrgew $xt3,$xd2,$xd3
+ vpermdi $xc1,$xc0,$xc2,0b00
+ vpermdi $xc3,$xc0,$xc2,0b11
+ vpermdi $xc0,$xt0,$xt1,0b00
+ vpermdi $xc2,$xt0,$xt1,0b11
+
+ vmrgow $xd0,$xd0,$xd1
+ vmrgow $xd2,$xd2,$xd3
+ vspltisw $xt0,4
+ vadduwm $CTR,$CTR,$xt0 # next counter value
+ vpermdi $xd1,$xd0,$xd2,0b00
+ vpermdi $xd3,$xd0,$xd2,0b11
+ vpermdi $xd0,$xt2,$xt3,0b00
+ vpermdi $xd2,$xt2,$xt3,0b11
+
+ vadduwm $xa0,$xa0,@K[0]
+ vadduwm $xb0,$xb0,@K[1]
+ vadduwm $xc0,$xc0,@K[2]
+ vadduwm $xd0,$xd0,@K[3]
+
+ be?vperm $xa0,$xa0,$xa0,$beperm
+ be?vperm $xb0,$xb0,$xb0,$beperm
+ be?vperm $xc0,$xc0,$xc0,$beperm
+ be?vperm $xd0,$xd0,$xd0,$beperm
+
+ ${UCMP}i $len,0x40
+ blt Ltail_vsx
+
+ lvx_4w $xt0,$x00,$inp
+ lvx_4w $xt1,$x10,$inp
+ lvx_4w $xt2,$x20,$inp
+ lvx_4w $xt3,$x30,$inp
+
+ vxor $xt0,$xt0,$xa0
+ vxor $xt1,$xt1,$xb0
+ vxor $xt2,$xt2,$xc0
+ vxor $xt3,$xt3,$xd0
+
+ stvx_4w $xt0,$x00,$out
+ stvx_4w $xt1,$x10,$out
+ addi $inp,$inp,0x40
+ stvx_4w $xt2,$x20,$out
+ subi $len,$len,0x40
+ stvx_4w $xt3,$x30,$out
+ addi $out,$out,0x40
+ beq Ldone_vsx
+
+ vadduwm $xa0,$xa1,@K[0]
+ vadduwm $xb0,$xb1,@K[1]
+ vadduwm $xc0,$xc1,@K[2]
+ vadduwm $xd0,$xd1,@K[3]
+
+ be?vperm $xa0,$xa0,$xa0,$beperm
+ be?vperm $xb0,$xb0,$xb0,$beperm
+ be?vperm $xc0,$xc0,$xc0,$beperm
+ be?vperm $xd0,$xd0,$xd0,$beperm
+
+ ${UCMP}i $len,0x40
+ blt Ltail_vsx
+
+ lvx_4w $xt0,$x00,$inp
+ lvx_4w $xt1,$x10,$inp
+ lvx_4w $xt2,$x20,$inp
+ lvx_4w $xt3,$x30,$inp
+
+ vxor $xt0,$xt0,$xa0
+ vxor $xt1,$xt1,$xb0
+ vxor $xt2,$xt2,$xc0
+ vxor $xt3,$xt3,$xd0
+
+ stvx_4w $xt0,$x00,$out
+ stvx_4w $xt1,$x10,$out
+ addi $inp,$inp,0x40
+ stvx_4w $xt2,$x20,$out
+ subi $len,$len,0x40
+ stvx_4w $xt3,$x30,$out
+ addi $out,$out,0x40
+ beq Ldone_vsx
+
+ vadduwm $xa0,$xa2,@K[0]
+ vadduwm $xb0,$xb2,@K[1]
+ vadduwm $xc0,$xc2,@K[2]
+ vadduwm $xd0,$xd2,@K[3]
+
+ be?vperm $xa0,$xa0,$xa0,$beperm
+ be?vperm $xb0,$xb0,$xb0,$beperm
+ be?vperm $xc0,$xc0,$xc0,$beperm
+ be?vperm $xd0,$xd0,$xd0,$beperm
+
+ ${UCMP}i $len,0x40
+ blt Ltail_vsx
+
+ lvx_4w $xt0,$x00,$inp
+ lvx_4w $xt1,$x10,$inp
+ lvx_4w $xt2,$x20,$inp
+ lvx_4w $xt3,$x30,$inp
+
+ vxor $xt0,$xt0,$xa0
+ vxor $xt1,$xt1,$xb0
+ vxor $xt2,$xt2,$xc0
+ vxor $xt3,$xt3,$xd0
+
+ stvx_4w $xt0,$x00,$out
+ stvx_4w $xt1,$x10,$out
+ addi $inp,$inp,0x40
+ stvx_4w $xt2,$x20,$out
+ subi $len,$len,0x40
+ stvx_4w $xt3,$x30,$out
+ addi $out,$out,0x40
+ beq Ldone_vsx
+
+ vadduwm $xa0,$xa3,@K[0]
+ vadduwm $xb0,$xb3,@K[1]
+ vadduwm $xc0,$xc3,@K[2]
+ vadduwm $xd0,$xd3,@K[3]
+
+ be?vperm $xa0,$xa0,$xa0,$beperm
+ be?vperm $xb0,$xb0,$xb0,$beperm
+ be?vperm $xc0,$xc0,$xc0,$beperm
+ be?vperm $xd0,$xd0,$xd0,$beperm
+
+ ${UCMP}i $len,0x40
+ blt Ltail_vsx
+
+ lvx_4w $xt0,$x00,$inp
+ lvx_4w $xt1,$x10,$inp
+ lvx_4w $xt2,$x20,$inp
+ lvx_4w $xt3,$x30,$inp
+
+ vxor $xt0,$xt0,$xa0
+ vxor $xt1,$xt1,$xb0
+ vxor $xt2,$xt2,$xc0
+ vxor $xt3,$xt3,$xd0
+
+ stvx_4w $xt0,$x00,$out
+ stvx_4w $xt1,$x10,$out
+ addi $inp,$inp,0x40
+ stvx_4w $xt2,$x20,$out
+ subi $len,$len,0x40
+ stvx_4w $xt3,$x30,$out
+ addi $out,$out,0x40
+ mtctr r0
+ bne Loop_outer_vsx
+
+Ldone_vsx:
+ lwz r12,`$FRAME-4`($sp) # pull vrsave
+ li r10,`15+$LOCALS+64`
+ li r11,`31+$LOCALS+64`
+ $POP r0, `$FRAME+$LRSAVE`($sp)
+ mtspr 256,r12 # restore vrsave
+ lvx v26,r10,$sp
+ addi r10,r10,32
+ lvx v27,r11,$sp
+ addi r11,r11,32
+ lvx v28,r10,$sp
+ addi r10,r10,32
+ lvx v29,r11,$sp
+ addi r11,r11,32
+ lvx v30,r10,$sp
+ lvx v31,r11,$sp
+ mtlr r0
+ addi $sp,$sp,$FRAME
+ blr
+
+.align 4
+Ltail_vsx:
+ addi r11,$sp,$LOCALS
+ mtctr $len
+ stvx_4w $xa0,$x00,r11 # offload block to stack
+ stvx_4w $xb0,$x10,r11
+ stvx_4w $xc0,$x20,r11
+ stvx_4w $xd0,$x30,r11
+ subi r12,r11,1 # prepare for *++ptr
+ subi $inp,$inp,1
+ subi $out,$out,1
+
+Loop_tail_vsx:
+ lbzu r6,1(r12)
+ lbzu r7,1($inp)
+ xor r6,r6,r7
+ stbu r6,1($out)
+ bdnz Loop_tail_vsx
+
+ stvx_4w $K[0],$x00,r11 # wipe copy of the block
+ stvx_4w $K[0],$x10,r11
+ stvx_4w $K[0],$x20,r11
+ stvx_4w $K[0],$x30,r11
+
+ b Ldone_vsx
+ .long 0
+ .byte 0,12,0x04,1,0x80,0,5,0
+ .long 0
+.size .ChaCha20_ctr32_vsx,.-.ChaCha20_ctr32_vsx
+___
+}}}
+$code.=<<___;
+.align 5
+Lconsts:
+ mflr r0
+ bcl 20,31,\$+4
+ mflr r12 #vvvvv "distance between . and Lsigma
+ addi r12,r12,`64-8`
+ mtlr r0
+ blr
+ .long 0
+ .byte 0,12,0x14,0,0,0,0,0
+ .space `64-9*4`
+Lsigma:
+ .long 0x61707865,0x3320646e,0x79622d32,0x6b206574
+ .long 1,0,0,0
+ .long 4,0,0,0
+___
+$code.=<<___ if ($LITTLE_ENDIAN);
+ .long 0x0e0f0c0d,0x0a0b0809,0x06070405,0x02030001
+ .long 0x0d0e0f0c,0x090a0b08,0x05060704,0x01020300
+___
+$code.=<<___ if (!$LITTLE_ENDIAN); # flipped words
+ .long 0x02030001,0x06070405,0x0a0b0809,0x0e0f0c0d
+ .long 0x01020300,0x05060704,0x090a0b08,0x0d0e0f0c
+___
+$code.=<<___;
+ .long 0x61707865,0x61707865,0x61707865,0x61707865
+ .long 0x3320646e,0x3320646e,0x3320646e,0x3320646e
+ .long 0x79622d32,0x79622d32,0x79622d32,0x79622d32
+ .long 0x6b206574,0x6b206574,0x6b206574,0x6b206574
+ .long 0,1,2,3
+.asciz "ChaCha20 for PowerPC/AltiVec, CRYPTOGAMS by <appro\@openssl.org>"
+.align 2
+___
+
+foreach (split("\n",$code)) {
+ s/\`([^\`]*)\`/eval $1/ge;
+
+ # instructions prefixed with '?' are endian-specific and need
+ # to be adjusted accordingly...
+ if ($flavour !~ /le$/) { # big-endian
+ s/be\?// or
+ s/le\?/#le#/ or
+ s/\?lvsr/lvsl/ or
+ s/\?lvsl/lvsr/ or
+ s/\?(vperm\s+v[0-9]+,\s*)(v[0-9]+,\s*)(v[0-9]+,\s*)(v[0-9]+)/$1$3$2$4/ or
+ s/vrldoi(\s+v[0-9]+,\s*)(v[0-9]+,)\s*([0-9]+)/vsldoi$1$2$2 16-$3/;
+ } else { # little-endian
+ s/le\?// or
+ s/be\?/#be#/ or
+ s/\?([a-z]+)/$1/ or
+ s/vrldoi(\s+v[0-9]+,\s*)(v[0-9]+,)\s*([0-9]+)/vsldoi$1$2$2 $3/;
+ }
+
+ print $_,"\n";
+}
+
+close STDOUT;
Copyright © 1996 – 2023 Jason A. Donenfeld. All Rights Reverse Engineered.