diff options
Diffstat (limited to 'deps/openssl/openssl/crypto/sha/asm/keccak1600-armv4.pl')
| -rwxr-xr-x | deps/openssl/openssl/crypto/sha/asm/keccak1600-armv4.pl | 1606 |
1 files changed, 1606 insertions, 0 deletions
diff --git a/deps/openssl/openssl/crypto/sha/asm/keccak1600-armv4.pl b/deps/openssl/openssl/crypto/sha/asm/keccak1600-armv4.pl new file mode 100755 index 0000000000..8bf665c8b3 --- /dev/null +++ b/deps/openssl/openssl/crypto/sha/asm/keccak1600-armv4.pl @@ -0,0 +1,1606 @@ +#!/usr/bin/env perl +# Copyright 2017-2018 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/. +# ==================================================================== +# +# Keccak-1600 for ARMv4. +# +# June 2017. +# +# Non-NEON code is KECCAK_1X variant (see sha/keccak1600.c) with bit +# interleaving. How does it compare to Keccak Code Package? It's as +# fast, but several times smaller, and is endian- and ISA-neutral. ISA +# neutrality means that minimum ISA requirement is ARMv4, yet it can +# be assembled even as Thumb-2. NEON code path is KECCAK_1X_ALT with +# register layout taken from Keccak Code Package. It's also as fast, +# in fact faster by 10-15% on some processors, and endian-neutral. +# +# August 2017. +# +# Switch to KECCAK_2X variant for non-NEON code and merge almost 1/2 +# of rotate instructions with logical ones. This resulted in ~10% +# improvement on most processors. Switch to KECCAK_2X effectively +# minimizes re-loads from temporary storage, and merged rotates just +# eliminate corresponding instructions. As for latter. When examining +# code you'll notice commented ror instructions. These are eliminated +# ones, and you should trace destination register below to see what's +# going on. Just in case, why not all rotates are eliminated. Trouble +# is that you have operations that require both inputs to be rotated, +# e.g. 'eor a,b>>>x,c>>>y'. This conundrum is resolved by using +# 'eor a,b,c>>>(x-y)' and then merge-rotating 'a' in next operation +# that takes 'a' as input. And thing is that this next operation can +# be in next round. It's totally possible to "carry" rotate "factors" +# to the next round, but it makes code more complex. And the last word +# is the keyword, i.e. "almost 1/2" is kind of complexity cap [for the +# time being]... +# +# Reduce per-round instruction count in Thumb-2 case by 16%. This is +# achieved by folding ldr/str pairs to their double-word counterparts. +# Theoretically this should have improved performance on single-issue +# cores, such as Cortex-A5/A7, by 19%. Reality is a bit different, as +# usual... +# +######################################################################## +# Numbers are cycles per processed byte. Non-NEON results account even +# for input bit interleaving. +# +# r=1088(*) Thumb-2(**) NEON +# +# ARM11xx 82/+150% +# Cortex-A5 88/+160%, 86, 36 +# Cortex-A7 78/+160%, 68, 34 +# Cortex-A8 51/+230%, 57, 30 +# Cortex-A9 53/+210%, 51, 26 +# Cortex-A15 42/+160%, 38, 18 +# Snapdragon S4 43/+210%, 38, 24 +# +# (*) Corresponds to SHA3-256. Percentage after slash is improvement +# over compiler-generated KECCAK_2X reference code. +# (**) Thumb-2 results for Cortex-A5/A7 are likely to apply even to +# Cortex-Mx, x>=3. Otherwise, non-NEON results for NEON-capable +# processors are presented mostly for reference purposes. + +$flavour = shift; +if ($flavour=~/\w[\w\-]*\.\w+$/) { $output=$flavour; undef $flavour; } +else { while (($output=shift) && ($output!~/\w[\w\-]*\.\w+$/)) {} } + +if ($flavour && $flavour ne "void") { + $0 =~ m/(.*[\/\\])[^\/\\]+$/; $dir=$1; + ( $xlate="${dir}arm-xlate.pl" and -f $xlate ) or + ( $xlate="${dir}../../perlasm/arm-xlate.pl" and -f $xlate) or + die "can't locate arm-xlate.pl"; + + open STDOUT,"| \"$^X\" $xlate $flavour $output"; +} else { + open STDOUT,">$output"; +} + +my @C = map("r$_",(0..9)); +my @E = map("r$_",(10..12,14)); + +######################################################################## +# Stack layout +# ----->+-----------------------+ +# | uint64_t A[5][5] | +# | ... | +# +200->+-----------------------+ +# | uint64_t D[5] | +# | ... | +# +240->+-----------------------+ +# | uint64_t T[5][5] | +# | ... | +# +440->+-----------------------+ +# | saved lr | +# +444->+-----------------------+ +# | loop counter | +# +448->+-----------------------+ +# | ... + +my @A = map([ 8*$_, 8*($_+1), 8*($_+2), 8*($_+3), 8*($_+4) ], (0,5,10,15,20)); +my @D = map(8*$_, (25..29)); +my @T = map([ 8*$_, 8*($_+1), 8*($_+2), 8*($_+3), 8*($_+4) ], (30,35,40,45,50)); + +$code.=<<___; +#include "arm_arch.h" + +.text + +#if defined(__thumb2__) +.syntax unified +.thumb +#else +.code 32 +#endif + +.type iotas32, %object +.align 5 +iotas32: + .long 0x00000001, 0x00000000 + .long 0x00000000, 0x00000089 + .long 0x00000000, 0x8000008b + .long 0x00000000, 0x80008080 + .long 0x00000001, 0x0000008b + .long 0x00000001, 0x00008000 + .long 0x00000001, 0x80008088 + .long 0x00000001, 0x80000082 + .long 0x00000000, 0x0000000b + .long 0x00000000, 0x0000000a + .long 0x00000001, 0x00008082 + .long 0x00000000, 0x00008003 + .long 0x00000001, 0x0000808b + .long 0x00000001, 0x8000000b + .long 0x00000001, 0x8000008a + .long 0x00000001, 0x80000081 + .long 0x00000000, 0x80000081 + .long 0x00000000, 0x80000008 + .long 0x00000000, 0x00000083 + .long 0x00000000, 0x80008003 + .long 0x00000001, 0x80008088 + .long 0x00000000, 0x80000088 + .long 0x00000001, 0x00008000 + .long 0x00000000, 0x80008082 +.size iotas32,.-iotas32 + +.type KeccakF1600_int, %function +.align 5 +KeccakF1600_int: + add @C[9],sp,#$A[4][2] + add @E[2],sp,#$A[0][0] + add @E[0],sp,#$A[1][0] + ldmia @C[9],{@C[4]-@C[9]} @ A[4][2..4] +KeccakF1600_enter: + str lr,[sp,#440] + eor @E[1],@E[1],@E[1] + str @E[1],[sp,#444] + b .Lround2x + +.align 4 +.Lround2x: +___ +sub Round { +my (@A,@R); (@A[0..4],@R) = @_; + +$code.=<<___; + ldmia @E[2],{@C[0]-@C[3]} @ A[0][0..1] + ldmia @E[0],{@E[0]-@E[2],@E[3]} @ A[1][0..1] +#ifdef __thumb2__ + eor @C[0],@C[0],@E[0] + eor @C[1],@C[1],@E[1] + eor @C[2],@C[2],@E[2] + ldrd @E[0],@E[1],[sp,#$A[1][2]] + eor @C[3],@C[3],@E[3] + ldrd @E[2],@E[3],[sp,#$A[1][3]] + eor @C[4],@C[4],@E[0] + eor @C[5],@C[5],@E[1] + eor @C[6],@C[6],@E[2] + ldrd @E[0],@E[1],[sp,#$A[1][4]] + eor @C[7],@C[7],@E[3] + ldrd @E[2],@E[3],[sp,#$A[2][0]] + eor @C[8],@C[8],@E[0] + eor @C[9],@C[9],@E[1] + eor @C[0],@C[0],@E[2] + ldrd @E[0],@E[1],[sp,#$A[2][1]] + eor @C[1],@C[1],@E[3] + ldrd @E[2],@E[3],[sp,#$A[2][2]] + eor @C[2],@C[2],@E[0] + eor @C[3],@C[3],@E[1] + eor @C[4],@C[4],@E[2] + ldrd @E[0],@E[1],[sp,#$A[2][3]] + eor @C[5],@C[5],@E[3] + ldrd @E[2],@E[3],[sp,#$A[2][4]] + eor @C[6],@C[6],@E[0] + eor @C[7],@C[7],@E[1] + eor @C[8],@C[8],@E[2] + ldrd @E[0],@E[1],[sp,#$A[3][0]] + eor @C[9],@C[9],@E[3] + ldrd @E[2],@E[3],[sp,#$A[3][1]] + eor @C[0],@C[0],@E[0] + eor @C[1],@C[1],@E[1] + eor @C[2],@C[2],@E[2] + ldrd @E[0],@E[1],[sp,#$A[3][2]] + eor @C[3],@C[3],@E[3] + ldrd @E[2],@E[3],[sp,#$A[3][3]] + eor @C[4],@C[4],@E[0] + eor @C[5],@C[5],@E[1] + eor @C[6],@C[6],@E[2] + ldrd @E[0],@E[1],[sp,#$A[3][4]] + eor @C[7],@C[7],@E[3] + ldrd @E[2],@E[3],[sp,#$A[4][0]] + eor @C[8],@C[8],@E[0] + eor @C[9],@C[9],@E[1] + eor @C[0],@C[0],@E[2] + ldrd @E[0],@E[1],[sp,#$A[4][1]] + eor @C[1],@C[1],@E[3] + ldrd @E[2],@E[3],[sp,#$A[0][2]] + eor @C[2],@C[2],@E[0] + eor @C[3],@C[3],@E[1] + eor @C[4],@C[4],@E[2] + ldrd @E[0],@E[1],[sp,#$A[0][3]] + eor @C[5],@C[5],@E[3] + ldrd @E[2],@E[3],[sp,#$A[0][4]] +#else + eor @C[0],@C[0],@E[0] + add @E[0],sp,#$A[1][2] + eor @C[1],@C[1],@E[1] + eor @C[2],@C[2],@E[2] + eor @C[3],@C[3],@E[3] + ldmia @E[0],{@E[0]-@E[2],@E[3]} @ A[1][2..3] + eor @C[4],@C[4],@E[0] + add @E[0],sp,#$A[1][4] + eor @C[5],@C[5],@E[1] + eor @C[6],@C[6],@E[2] + eor @C[7],@C[7],@E[3] + ldmia @E[0],{@E[0]-@E[2],@E[3]} @ A[1][4]..A[2][0] + eor @C[8],@C[8],@E[0] + add @E[0],sp,#$A[2][1] + eor @C[9],@C[9],@E[1] + eor @C[0],@C[0],@E[2] + eor @C[1],@C[1],@E[3] + ldmia @E[0],{@E[0]-@E[2],@E[3]} @ A[2][1..2] + eor @C[2],@C[2],@E[0] + add @E[0],sp,#$A[2][3] + eor @C[3],@C[3],@E[1] + eor @C[4],@C[4],@E[2] + eor @C[5],@C[5],@E[3] + ldmia @E[0],{@E[0]-@E[2],@E[3]} @ A[2][3..4] + eor @C[6],@C[6],@E[0] + add @E[0],sp,#$A[3][0] + eor @C[7],@C[7],@E[1] + eor @C[8],@C[8],@E[2] + eor @C[9],@C[9],@E[3] + ldmia @E[0],{@E[0]-@E[2],@E[3]} @ A[3][0..1] + eor @C[0],@C[0],@E[0] + add @E[0],sp,#$A[3][2] + eor @C[1],@C[1],@E[1] + eor @C[2],@C[2],@E[2] + eor @C[3],@C[3],@E[3] + ldmia @E[0],{@E[0]-@E[2],@E[3]} @ A[3][2..3] + eor @C[4],@C[4],@E[0] + add @E[0],sp,#$A[3][4] + eor @C[5],@C[5],@E[1] + eor @C[6],@C[6],@E[2] + eor @C[7],@C[7],@E[3] + ldmia @E[0],{@E[0]-@E[2],@E[3]} @ A[3][4]..A[4][0] + eor @C[8],@C[8],@E[0] + ldr @E[0],[sp,#$A[4][1]] @ A[4][1] + eor @C[9],@C[9],@E[1] + ldr @E[1],[sp,#$A[4][1]+4] + eor @C[0],@C[0],@E[2] + ldr @E[2],[sp,#$A[0][2]] @ A[0][2] + eor @C[1],@C[1],@E[3] + ldr @E[3],[sp,#$A[0][2]+4] + eor @C[2],@C[2],@E[0] + add @E[0],sp,#$A[0][3] + eor @C[3],@C[3],@E[1] + eor @C[4],@C[4],@E[2] + eor @C[5],@C[5],@E[3] + ldmia @E[0],{@E[0]-@E[2],@E[3]} @ A[0][3..4] +#endif + eor @C[6],@C[6],@E[0] + eor @C[7],@C[7],@E[1] + eor @C[8],@C[8],@E[2] + eor @C[9],@C[9],@E[3] + + eor @E[0],@C[0],@C[5],ror#32-1 @ E[0] = ROL64(C[2], 1) ^ C[0]; + str.l @E[0],[sp,#$D[1]] @ D[1] = E[0] + eor @E[1],@C[1],@C[4] + str.h @E[1],[sp,#$D[1]+4] + eor @E[2],@C[6],@C[1],ror#32-1 @ E[1] = ROL64(C[0], 1) ^ C[3]; + eor @E[3],@C[7],@C[0] + str.l @E[2],[sp,#$D[4]] @ D[4] = E[1] + eor @C[0],@C[8],@C[3],ror#32-1 @ C[0] = ROL64(C[1], 1) ^ C[4]; + str.h @E[3],[sp,#$D[4]+4] + eor @C[1],@C[9],@C[2] + str.l @C[0],[sp,#$D[0]] @ D[0] = C[0] + eor @C[2],@C[2],@C[7],ror#32-1 @ C[1] = ROL64(C[3], 1) ^ C[1]; + ldr.l @C[7],[sp,#$A[3][3]] + eor @C[3],@C[3],@C[6] + str.h @C[1],[sp,#$D[0]+4] + ldr.h @C[6],[sp,#$A[3][3]+4] + str.l @C[2],[sp,#$D[2]] @ D[2] = C[1] + eor @C[4],@C[4],@C[9],ror#32-1 @ C[2] = ROL64(C[4], 1) ^ C[2]; + str.h @C[3],[sp,#$D[2]+4] + eor @C[5],@C[5],@C[8] + + ldr.l @C[8],[sp,#$A[4][4]] + ldr.h @C[9],[sp,#$A[4][4]+4] + str.l @C[4],[sp,#$D[3]] @ D[3] = C[2] + eor @C[7],@C[7],@C[4] + str.h @C[5],[sp,#$D[3]+4] + eor @C[6],@C[6],@C[5] + ldr.l @C[4],[sp,#$A[0][0]] + @ ror @C[7],@C[7],#32-10 @ C[3] = ROL64(A[3][3] ^ C[2], rhotates[3][3]); /* D[3] */ + @ ror @C[6],@C[6],#32-11 + ldr.h @C[5],[sp,#$A[0][0]+4] + eor @C[8],@C[8],@E[2] + eor @C[9],@C[9],@E[3] + ldr.l @E[2],[sp,#$A[2][2]] + eor @C[0],@C[0],@C[4] + ldr.h @E[3],[sp,#$A[2][2]+4] + @ ror @C[8],@C[8],#32-7 @ C[4] = ROL64(A[4][4] ^ E[1], rhotates[4][4]); /* D[4] */ + @ ror @C[9],@C[9],#32-7 + eor @C[1],@C[1],@C[5] @ C[0] = A[0][0] ^ C[0]; /* rotate by 0 */ /* D[0] */ + eor @E[2],@E[2],@C[2] + ldr.l @C[2],[sp,#$A[1][1]] + eor @E[3],@E[3],@C[3] + ldr.h @C[3],[sp,#$A[1][1]+4] + ror @C[5],@E[2],#32-21 @ C[2] = ROL64(A[2][2] ^ C[1], rhotates[2][2]); /* D[2] */ + ldr @E[2],[sp,#444] @ load counter + eor @C[2],@C[2],@E[0] + adr @E[0],iotas32 + ror @C[4],@E[3],#32-22 + add @E[3],@E[0],@E[2] + eor @C[3],@C[3],@E[1] +___ +$code.=<<___ if ($A[0][0] != $T[0][0]); + ldmia @E[3],{@E[0],@E[1]} @ iotas[i] +___ +$code.=<<___ if ($A[0][0] == $T[0][0]); + ldr.l @E[0],[@E[3],#8] @ iotas[i].lo + add @E[2],@E[2],#16 + ldr.h @E[1],[@E[3],#12] @ iotas[i].hi + cmp @E[2],#192 + str @E[2],[sp,#444] @ store counter +___ +$code.=<<___; + bic @E[2],@C[4],@C[2],ror#32-22 + bic @E[3],@C[5],@C[3],ror#32-22 + ror @C[2],@C[2],#32-22 @ C[1] = ROL64(A[1][1] ^ E[0], rhotates[1][1]); /* D[1] */ + ror @C[3],@C[3],#32-22 + eor @E[2],@E[2],@C[0] + eor @E[3],@E[3],@C[1] + eor @E[0],@E[0],@E[2] + eor @E[1],@E[1],@E[3] + str.l @E[0],[sp,#$R[0][0]] @ R[0][0] = C[0] ^ (~C[1] & C[2]) ^ iotas[i]; + bic @E[2],@C[6],@C[4],ror#11 + str.h @E[1],[sp,#$R[0][0]+4] + bic @E[3],@C[7],@C[5],ror#10 + bic @E[0],@C[8],@C[6],ror#32-(11-7) + bic @E[1],@C[9],@C[7],ror#32-(10-7) + eor @E[2],@C[2],@E[2],ror#32-11 + str.l @E[2],[sp,#$R[0][1]] @ R[0][1] = C[1] ^ (~C[2] & C[3]); + eor @E[3],@C[3],@E[3],ror#32-10 + str.h @E[3],[sp,#$R[0][1]+4] + eor @E[0],@C[4],@E[0],ror#32-7 + eor @E[1],@C[5],@E[1],ror#32-7 + str.l @E[0],[sp,#$R[0][2]] @ R[0][2] = C[2] ^ (~C[3] & C[4]); + bic @E[2],@C[0],@C[8],ror#32-7 + str.h @E[1],[sp,#$R[0][2]+4] + bic @E[3],@C[1],@C[9],ror#32-7 + eor @E[2],@E[2],@C[6],ror#32-11 + str.l @E[2],[sp,#$R[0][3]] @ R[0][3] = C[3] ^ (~C[4] & C[0]); + eor @E[3],@E[3],@C[7],ror#32-10 + str.h @E[3],[sp,#$R[0][3]+4] + bic @E[0],@C[2],@C[0] + add @E[3],sp,#$D[3] + ldr.l @C[0],[sp,#$A[0][3]] @ A[0][3] + bic @E[1],@C[3],@C[1] + ldr.h @C[1],[sp,#$A[0][3]+4] + eor @E[0],@E[0],@C[8],ror#32-7 + eor @E[1],@E[1],@C[9],ror#32-7 + str.l @E[0],[sp,#$R[0][4]] @ R[0][4] = C[4] ^ (~C[0] & C[1]); + add @C[9],sp,#$D[0] + str.h @E[1],[sp,#$R[0][4]+4] + + ldmia @E[3],{@E[0]-@E[2],@E[3]} @ D[3..4] + ldmia @C[9],{@C[6]-@C[9]} @ D[0..1] + + ldr.l @C[2],[sp,#$A[1][4]] @ A[1][4] + eor @C[0],@C[0],@E[0] + ldr.h @C[3],[sp,#$A[1][4]+4] + eor @C[1],@C[1],@E[1] + @ ror @C[0],@C[0],#32-14 @ C[0] = ROL64(A[0][3] ^ D[3], rhotates[0][3]); + ldr.l @E[0],[sp,#$A[3][1]] @ A[3][1] + @ ror @C[1],@C[1],#32-14 + ldr.h @E[1],[sp,#$A[3][1]+4] + + eor @C[2],@C[2],@E[2] + ldr.l @C[4],[sp,#$A[2][0]] @ A[2][0] + eor @C[3],@C[3],@E[3] + ldr.h @C[5],[sp,#$A[2][0]+4] + @ ror @C[2],@C[2],#32-10 @ C[1] = ROL64(A[1][4] ^ D[4], rhotates[1][4]); + @ ror @C[3],@C[3],#32-10 + + eor @C[6],@C[6],@C[4] + ldr.l @E[2],[sp,#$D[2]] @ D[2] + eor @C[7],@C[7],@C[5] + ldr.h @E[3],[sp,#$D[2]+4] + ror @C[5],@C[6],#32-1 @ C[2] = ROL64(A[2][0] ^ D[0], rhotates[2][0]); + ror @C[4],@C[7],#32-2 + + eor @E[0],@E[0],@C[8] + ldr.l @C[8],[sp,#$A[4][2]] @ A[4][2] + eor @E[1],@E[1],@C[9] + ldr.h @C[9],[sp,#$A[4][2]+4] + ror @C[7],@E[0],#32-22 @ C[3] = ROL64(A[3][1] ^ D[1], rhotates[3][1]); + ror @C[6],@E[1],#32-23 + + bic @E[0],@C[4],@C[2],ror#32-10 + bic @E[1],@C[5],@C[3],ror#32-10 + eor @E[2],@E[2],@C[8] + eor @E[3],@E[3],@C[9] + ror @C[9],@E[2],#32-30 @ C[4] = ROL64(A[4][2] ^ D[2], rhotates[4][2]); + ror @C[8],@E[3],#32-31 + eor @E[0],@E[0],@C[0],ror#32-14 + eor @E[1],@E[1],@C[1],ror#32-14 + str.l @E[0],[sp,#$R[1][0]] @ R[1][0] = C[0] ^ (~C[1] & C[2]) + bic @E[2],@C[6],@C[4] + str.h @E[1],[sp,#$R[1][0]+4] + bic @E[3],@C[7],@C[5] + eor @E[2],@E[2],@C[2],ror#32-10 + str.l @E[2],[sp,#$R[1][1]] @ R[1][1] = C[1] ^ (~C[2] & C[3]); + eor @E[3],@E[3],@C[3],ror#32-10 + str.h @E[3],[sp,#$R[1][1]+4] + bic @E[0],@C[8],@C[6] + bic @E[1],@C[9],@C[7] + bic @E[2],@C[0],@C[8],ror#14 + bic @E[3],@C[1],@C[9],ror#14 + eor @E[0],@E[0],@C[4] + eor @E[1],@E[1],@C[5] + str.l @E[0],[sp,#$R[1][2]] @ R[1][2] = C[2] ^ (~C[3] & C[4]); + bic @C[2],@C[2],@C[0],ror#32-(14-10) + str.h @E[1],[sp,#$R[1][2]+4] + eor @E[2],@C[6],@E[2],ror#32-14 + bic @E[1],@C[3],@C[1],ror#32-(14-10) + str.l @E[2],[sp,#$R[1][3]] @ R[1][3] = C[3] ^ (~C[4] & C[0]); + eor @E[3],@C[7],@E[3],ror#32-14 + str.h @E[3],[sp,#$R[1][3]+4] + add @E[2],sp,#$D[1] + ldr.l @C[1],[sp,#$A[0][1]] @ A[0][1] + eor @E[0],@C[8],@C[2],ror#32-10 + ldr.h @C[0],[sp,#$A[0][1]+4] + eor @E[1],@C[9],@E[1],ror#32-10 + str.l @E[0],[sp,#$R[1][4]] @ R[1][4] = C[4] ^ (~C[0] & C[1]); + str.h @E[1],[sp,#$R[1][4]+4] + + add @C[9],sp,#$D[3] + ldmia @E[2],{@E[0]-@E[2],@E[3]} @ D[1..2] + ldr.l @C[2],[sp,#$A[1][2]] @ A[1][2] + ldr.h @C[3],[sp,#$A[1][2]+4] + ldmia @C[9],{@C[6]-@C[9]} @ D[3..4] + + eor @C[1],@C[1],@E[0] + ldr.l @C[4],[sp,#$A[2][3]] @ A[2][3] + eor @C[0],@C[0],@E[1] + ldr.h @C[5],[sp,#$A[2][3]+4] + ror @C[0],@C[0],#32-1 @ C[0] = ROL64(A[0][1] ^ D[1], rhotates[0][1]); + + eor @C[2],@C[2],@E[2] + ldr.l @E[0],[sp,#$A[3][4]] @ A[3][4] + eor @C[3],@C[3],@E[3] + ldr.h @E[1],[sp,#$A[3][4]+4] + @ ror @C[2],@C[2],#32-3 @ C[1] = ROL64(A[1][2] ^ D[2], rhotates[1][2]); + ldr.l @E[2],[sp,#$D[0]] @ D[0] + @ ror @C[3],@C[3],#32-3 + ldr.h @E[3],[sp,#$D[0]+4] + + eor @C[4],@C[4],@C[6] + eor @C[5],@C[5],@C[7] + @ ror @C[5],@C[6],#32-12 @ C[2] = ROL64(A[2][3] ^ D[3], rhotates[2][3]); + @ ror @C[4],@C[7],#32-13 @ [track reverse order below] + + eor @E[0],@E[0],@C[8] + ldr.l @C[8],[sp,#$A[4][0]] @ A[4][0] + eor @E[1],@E[1],@C[9] + ldr.h @C[9],[sp,#$A[4][0]+4] + ror @C[6],@E[0],#32-4 @ C[3] = ROL64(A[3][4] ^ D[4], rhotates[3][4]); + ror @C[7],@E[1],#32-4 + + eor @E[2],@E[2],@C[8] + eor @E[3],@E[3],@C[9] + ror @C[8],@E[2],#32-9 @ C[4] = ROL64(A[4][0] ^ D[0], rhotates[4][0]); + ror @C[9],@E[3],#32-9 + + bic @E[0],@C[5],@C[2],ror#13-3 + bic @E[1],@C[4],@C[3],ror#12-3 + bic @E[2],@C[6],@C[5],ror#32-13 + bic @E[3],@C[7],@C[4],ror#32-12 + eor @E[0],@C[0],@E[0],ror#32-13 + eor @E[1],@C[1],@E[1],ror#32-12 + str.l @E[0],[sp,#$R[2][0]] @ R[2][0] = C[0] ^ (~C[1] & C[2]) + eor @E[2],@E[2],@C[2],ror#32-3 + str.h @E[1],[sp,#$R[2][0]+4] + eor @E[3],@E[3],@C[3],ror#32-3 + str.l @E[2],[sp,#$R[2][1]] @ R[2][1] = C[1] ^ (~C[2] & C[3]); + bic @E[0],@C[8],@C[6] + bic @E[1],@C[9],@C[7] + str.h @E[3],[sp,#$R[2][1]+4] + eor @E[0],@E[0],@C[5],ror#32-13 + eor @E[1],@E[1],@C[4],ror#32-12 + str.l @E[0],[sp,#$R[2][2]] @ R[2][2] = C[2] ^ (~C[3] & C[4]); + bic @E[2],@C[0],@C[8] + str.h @E[1],[sp,#$R[2][2]+4] + bic @E[3],@C[1],@C[9] + eor @E[2],@E[2],@C[6] + eor @E[3],@E[3],@C[7] + str.l @E[2],[sp,#$R[2][3]] @ R[2][3] = C[3] ^ (~C[4] & C[0]); + bic @E[0],@C[2],@C[0],ror#3 + str.h @E[3],[sp,#$R[2][3]+4] + bic @E[1],@C[3],@C[1],ror#3 + ldr.l @C[1],[sp,#$A[0][4]] @ A[0][4] [in reverse order] + eor @E[0],@C[8],@E[0],ror#32-3 + ldr.h @C[0],[sp,#$A[0][4]+4] + eor @E[1],@C[9],@E[1],ror#32-3 + str.l @E[0],[sp,#$R[2][4]] @ R[2][4] = C[4] ^ (~C[0] & C[1]); + add @C[9],sp,#$D[1] + str.h @E[1],[sp,#$R[2][4]+4] + + ldr.l @E[0],[sp,#$D[4]] @ D[4] + ldr.h @E[1],[sp,#$D[4]+4] + ldr.l @E[2],[sp,#$D[0]] @ D[0] + ldr.h @E[3],[sp,#$D[0]+4] + + ldmia @C[9],{@C[6]-@C[9]} @ D[1..2] + + eor @C[1],@C[1],@E[0] + ldr.l @C[2],[sp,#$A[1][0]] @ A[1][0] + eor @C[0],@C[0],@E[1] + ldr.h @C[3],[sp,#$A[1][0]+4] + @ ror @C[1],@E[0],#32-13 @ C[0] = ROL64(A[0][4] ^ D[4], rhotates[0][4]); + ldr.l @C[4],[sp,#$A[2][1]] @ A[2][1] + @ ror @C[0],@E[1],#32-14 @ [was loaded in reverse order] + ldr.h @C[5],[sp,#$A[2][1]+4] + + eor @C[2],@C[2],@E[2] + ldr.l @E[0],[sp,#$A[3][2]] @ A[3][2] + eor @C[3],@C[3],@E[3] + ldr.h @E[1],[sp,#$A[3][2]+4] + @ ror @C[2],@C[2],#32-18 @ C[1] = ROL64(A[1][0] ^ D[0], rhotates[1][0]); + ldr.l @E[2],[sp,#$D[3]] @ D[3] + @ ror @C[3],@C[3],#32-18 + ldr.h @E[3],[sp,#$D[3]+4] + + eor @C[6],@C[6],@C[4] + eor @C[7],@C[7],@C[5] + ror @C[4],@C[6],#32-5 @ C[2] = ROL64(A[2][1] ^ D[1], rhotates[2][1]); + ror @C[5],@C[7],#32-5 + + eor @E[0],@E[0],@C[8] + ldr.l @C[8],[sp,#$A[4][3]] @ A[4][3] + eor @E[1],@E[1],@C[9] + ldr.h @C[9],[sp,#$A[4][3]+4] + ror @C[7],@E[0],#32-7 @ C[3] = ROL64(A[3][2] ^ D[2], rhotates[3][2]); + ror @C[6],@E[1],#32-8 + + eor @E[2],@E[2],@C[8] + eor @E[3],@E[3],@C[9] + ror @C[8],@E[2],#32-28 @ C[4] = ROL64(A[4][3] ^ D[3], rhotates[4][3]); + ror @C[9],@E[3],#32-28 + + bic @E[0],@C[4],@C[2],ror#32-18 + bic @E[1],@C[5],@C[3],ror#32-18 + eor @E[0],@E[0],@C[0],ror#32-14 + eor @E[1],@E[1],@C[1],ror#32-13 + str.l @E[0],[sp,#$R[3][0]] @ R[3][0] = C[0] ^ (~C[1] & C[2]) + bic @E[2],@C[6],@C[4] + str.h @E[1],[sp,#$R[3][0]+4] + bic @E[3],@C[7],@C[5] + eor @E[2],@E[2],@C[2],ror#32-18 + str.l @E[2],[sp,#$R[3][1]] @ R[3][1] = C[1] ^ (~C[2] & C[3]); + eor @E[3],@E[3],@C[3],ror#32-18 + str.h @E[3],[sp,#$R[3][1]+4] + bic @E[0],@C[8],@C[6] + bic @E[1],@C[9],@C[7] + bic @E[2],@C[0],@C[8],ror#14 + bic @E[3],@C[1],@C[9],ror#13 + eor @E[0],@E[0],@C[4] + eor @E[1],@E[1],@C[5] + str.l @E[0],[sp,#$R[3][2]] @ R[3][2] = C[2] ^ (~C[3] & C[4]); + bic @C[2],@C[2],@C[0],ror#18-14 + str.h @E[1],[sp,#$R[3][2]+4] + eor @E[2],@C[6],@E[2],ror#32-14 + bic @E[1],@C[3],@C[1],ror#18-13 + eor @E[3],@C[7],@E[3],ror#32-13 + str.l @E[2],[sp,#$R[3][3]] @ R[3][3] = C[3] ^ (~C[4] & C[0]); + str.h @E[3],[sp,#$R[3][3]+4] + add @E[3],sp,#$D[2] + ldr.l @C[0],[sp,#$A[0][2]] @ A[0][2] + eor @E[0],@C[8],@C[2],ror#32-18 + ldr.h @C[1],[sp,#$A[0][2]+4] + eor @E[1],@C[9],@E[1],ror#32-18 + str.l @E[0],[sp,#$R[3][4]] @ R[3][4] = C[4] ^ (~C[0] & C[1]); + str.h @E[1],[sp,#$R[3][4]+4] + + ldmia @E[3],{@E[0]-@E[2],@E[3]} @ D[2..3] + ldr.l @C[2],[sp,#$A[1][3]] @ A[1][3] + ldr.h @C[3],[sp,#$A[1][3]+4] + ldr.l @C[6],[sp,#$D[4]] @ D[4] + ldr.h @C[7],[sp,#$D[4]+4] + + eor @C[0],@C[0],@E[0] + ldr.l @C[4],[sp,#$A[2][4]] @ A[2][4] + eor @C[1],@C[1],@E[1] + ldr.h @C[5],[sp,#$A[2][4]+4] + @ ror @C[0],@C[0],#32-31 @ C[0] = ROL64(A[0][2] ^ D[2], rhotates[0][2]); + ldr.l @C[8],[sp,#$D[0]] @ D[0] + @ ror @C[1],@C[1],#32-31 + ldr.h @C[9],[sp,#$D[0]+4] + + eor @E[2],@E[2],@C[2] + ldr.l @E[0],[sp,#$A[3][0]] @ A[3][0] + eor @E[3],@E[3],@C[3] + ldr.h @E[1],[sp,#$A[3][0]+4] + ror @C[3],@E[2],#32-27 @ C[1] = ROL64(A[1][3] ^ D[3], rhotates[1][3]); + ldr.l @E[2],[sp,#$D[1]] @ D[1] + ror @C[2],@E[3],#32-28 + ldr.h @E[3],[sp,#$D[1]+4] + + eor @C[6],@C[6],@C[4] + eor @C[7],@C[7],@C[5] + ror @C[5],@C[6],#32-19 @ C[2] = ROL64(A[2][4] ^ D[4], rhotates[2][4]); + ror @C[4],@C[7],#32-20 + + eor @E[0],@E[0],@C[8] + ldr.l @C[8],[sp,#$A[4][1]] @ A[4][1] + eor @E[1],@E[1],@C[9] + ldr.h @C[9],[sp,#$A[4][1]+4] + ror @C[7],@E[0],#32-20 @ C[3] = ROL64(A[3][0] ^ D[0], rhotates[3][0]); + ror @C[6],@E[1],#32-21 + + eor @C[8],@C[8],@E[2] + eor @C[9],@C[9],@E[3] + @ ror @C[8],@C[2],#32-1 @ C[4] = ROL64(A[4][1] ^ D[1], rhotates[4][1]); + @ ror @C[9],@C[3],#32-1 + + bic @E[0],@C[4],@C[2] + bic @E[1],@C[5],@C[3] + eor @E[0],@E[0],@C[0],ror#32-31 + str.l @E[0],[sp,#$R[4][0]] @ R[4][0] = C[0] ^ (~C[1] & C[2]) + eor @E[1],@E[1],@C[1],ror#32-31 + str.h @E[1],[sp,#$R[4][0]+4] + bic @E[2],@C[6],@C[4] + bic @E[3],@C[7],@C[5] + eor @E[2],@E[2],@C[2] + eor @E[3],@E[3],@C[3] + str.l @E[2],[sp,#$R[4][1]] @ R[4][1] = C[1] ^ (~C[2] & C[3]); + bic @E[0],@C[8],@C[6],ror#1 + str.h @E[3],[sp,#$R[4][1]+4] + bic @E[1],@C[9],@C[7],ror#1 + bic @E[2],@C[0],@C[8],ror#31-1 + bic @E[3],@C[1],@C[9],ror#31-1 + eor @C[4],@C[4],@E[0],ror#32-1 + str.l @C[4],[sp,#$R[4][2]] @ R[4][2] = C[2] ^= (~C[3] & C[4]); + eor @C[5],@C[5],@E[1],ror#32-1 + str.h @C[5],[sp,#$R[4][2]+4] + eor @C[6],@C[6],@E[2],ror#32-31 + eor @C[7],@C[7],@E[3],ror#32-31 + str.l @C[6],[sp,#$R[4][3]] @ R[4][3] = C[3] ^= (~C[4] & C[0]); + bic @E[0],@C[2],@C[0],ror#32-31 + str.h @C[7],[sp,#$R[4][3]+4] + bic @E[1],@C[3],@C[1],ror#32-31 + add @E[2],sp,#$R[0][0] + eor @C[8],@E[0],@C[8],ror#32-1 + add @E[0],sp,#$R[1][0] + eor @C[9],@E[1],@C[9],ror#32-1 + str.l @C[8],[sp,#$R[4][4]] @ R[4][4] = C[4] ^= (~C[0] & C[1]); + str.h @C[9],[sp,#$R[4][4]+4] +___ +} + Round(@A,@T); + Round(@T,@A); +$code.=<<___; + blo .Lround2x + + ldr pc,[sp,#440] +.size KeccakF1600_int,.-KeccakF1600_int + +.type KeccakF1600, %function +.align 5 +KeccakF1600: + stmdb sp!,{r0,r4-r11,lr} + sub sp,sp,#440+16 @ space for A[5][5],D[5],T[5][5],... + + add @E[0],r0,#$A[1][0] + add @E[1],sp,#$A[1][0] + ldmia r0, {@C[0]-@C[9]} @ copy A[5][5] to stack + stmia sp, {@C[0]-@C[9]} + ldmia @E[0]!,{@C[0]-@C[9]} + stmia @E[1]!,{@C[0]-@C[9]} + ldmia @E[0]!,{@C[0]-@C[9]} + stmia @E[1]!,{@C[0]-@C[9]} + ldmia @E[0]!,{@C[0]-@C[9]} + stmia @E[1]!,{@C[0]-@C[9]} + ldmia @E[0], {@C[0]-@C[9]} + add @E[2],sp,#$A[0][0] + add @E[0],sp,#$A[1][0] + stmia @E[1], {@C[0]-@C[9]} + + bl KeccakF1600_enter + + ldr @E[1], [sp,#440+16] @ restore pointer to A + ldmia sp, {@C[0]-@C[9]} + stmia @E[1]!,{@C[0]-@C[9]} @ return A[5][5] + ldmia @E[0]!,{@C[0]-@C[9]} + stmia @E[1]!,{@C[0]-@C[9]} + ldmia @E[0]!,{@C[0]-@C[9]} + stmia @E[1]!,{@C[0]-@C[9]} + ldmia @E[0]!,{@C[0]-@C[9]} + stmia @E[1]!,{@C[0]-@C[9]} + ldmia @E[0], {@C[0]-@C[9]} + stmia @E[1], {@C[0]-@C[9]} + + add sp,sp,#440+20 + ldmia sp!,{r4-r11,pc} +.size KeccakF1600,.-KeccakF1600 +___ +{ my ($A_flat,$inp,$len,$bsz) = map("r$_",(10..12,14)); + +######################################################################## +# Stack layout +# ----->+-----------------------+ +# | uint64_t A[5][5] | +# | ... | +# | ... | +# +456->+-----------------------+ +# | 0x55555555 | +# +460->+-----------------------+ +# | 0x33333333 | +# +464->+-----------------------+ +# | 0x0f0f0f0f | +# +468->+-----------------------+ +# | 0x00ff00ff | +# +472->+-----------------------+ +# | uint64_t *A | +# +476->+-----------------------+ +# | const void *inp | +# +480->+-----------------------+ +# | size_t len | +# +484->+-----------------------+ +# | size_t bs | +# +488->+-----------------------+ +# | .... + +$code.=<<___; +.global SHA3_absorb +.type SHA3_absorb,%function +.align 5 +SHA3_absorb: + stmdb sp!,{r0-r12,lr} + sub sp,sp,#456+16 + + add $A_flat,r0,#$A[1][0] + @ mov $inp,r1 + mov $len,r2 + mov $bsz,r3 + cmp r2,r3 + blo .Labsorb_abort + + add $inp,sp,#0 + ldmia r0, {@C[0]-@C[9]} @ copy A[5][5] to stack + stmia $inp!, {@C[0]-@C[9]} + ldmia $A_flat!,{@C[0]-@C[9]} + stmia $inp!, {@C[0]-@C[9]} + ldmia $A_flat!,{@C[0]-@C[9]} + stmia $inp!, {@C[0]-@C[9]} + ldmia $A_flat!,{@C[0]-@C[9]} + stmia $inp!, {@C[0]-@C[9]} + ldmia $A_flat!,{@C[0]-@C[9]} + stmia $inp, {@C[0]-@C[9]} + + ldr $inp,[sp,#476] @ restore $inp +#ifdef __thumb2__ + mov r9,#0x00ff00ff + mov r8,#0x0f0f0f0f + mov r7,#0x33333333 + mov r6,#0x55555555 +#else + mov r6,#0x11 @ compose constants + mov r8,#0x0f + mov r9,#0xff + orr r6,r6,r6,lsl#8 + orr r8,r8,r8,lsl#8 + orr r6,r6,r6,lsl#16 @ 0x11111111 + orr r9,r9,r9,lsl#16 @ 0x00ff00ff + orr r8,r8,r8,lsl#16 @ 0x0f0f0f0f + orr r7,r6,r6,lsl#1 @ 0x33333333 + orr r6,r6,r6,lsl#2 @ 0x55555555 +#endif + str r9,[sp,#468] + str r8,[sp,#464] + str r7,[sp,#460] + str r6,[sp,#456] + b .Loop_absorb + +.align 4 +.Loop_absorb: + subs r0,$len,$bsz + blo .Labsorbed + add $A_flat,sp,#0 + str r0,[sp,#480] @ save len - bsz + +.align 4 +.Loop_block: + ldrb r0,[$inp],#1 + ldrb r1,[$inp],#1 + ldrb r2,[$inp],#1 + ldrb r3,[$inp],#1 + ldrb r4,[$inp],#1 + orr r0,r0,r1,lsl#8 + ldrb r1,[$inp],#1 + orr r0,r0,r2,lsl#16 + ldrb r2,[$inp],#1 + orr r0,r0,r3,lsl#24 @ lo + ldrb r3,[$inp],#1 + orr r1,r4,r1,lsl#8 + orr r1,r1,r2,lsl#16 + orr r1,r1,r3,lsl#24 @ hi + + and r2,r0,r6 @ &=0x55555555 + and r0,r0,r6,lsl#1 @ &=0xaaaaaaaa + and r3,r1,r6 @ &=0x55555555 + and r1,r1,r6,lsl#1 @ &=0xaaaaaaaa + orr r2,r2,r2,lsr#1 + orr r0,r0,r0,lsl#1 + orr r3,r3,r3,lsr#1 + orr r1,r1,r1,lsl#1 + and r2,r2,r7 @ &=0x33333333 + and r0,r0,r7,lsl#2 @ &=0xcccccccc + and r3,r3,r7 @ &=0x33333333 + and r1,r1,r7,lsl#2 @ &=0xcccccccc + orr r2,r2,r2,lsr#2 + orr r0,r0,r0,lsl#2 + orr r3,r3,r3,lsr#2 + orr r1,r1,r1,lsl#2 + and r2,r2,r8 @ &=0x0f0f0f0f + and r0,r0,r8,lsl#4 @ &=0xf0f0f0f0 + and r3,r3,r8 @ &=0x0f0f0f0f + and r1,r1,r8,lsl#4 @ &=0xf0f0f0f0 + ldmia $A_flat,{r4-r5} @ A_flat[i] + orr r2,r2,r2,lsr#4 + orr r0,r0,r0,lsl#4 + orr r3,r3,r3,lsr#4 + orr r1,r1,r1,lsl#4 + and r2,r2,r9 @ &=0x00ff00ff + and r0,r0,r9,lsl#8 @ &=0xff00ff00 + and r3,r3,r9 @ &=0x00ff00ff + and r1,r1,r9,lsl#8 @ &=0xff00ff00 + orr r2,r2,r2,lsr#8 + orr r0,r0,r0,lsl#8 + orr r3,r3,r3,lsr#8 + orr r1,r1,r1,lsl#8 + + lsl r2,r2,#16 + lsr r1,r1,#16 + eor r4,r4,r3,lsl#16 + eor r5,r5,r0,lsr#16 + eor r4,r4,r2,lsr#16 + eor r5,r5,r1,lsl#16 + stmia $A_flat!,{r4-r5} @ A_flat[i++] ^= BitInterleave(inp[0..7]) + + subs $bsz,$bsz,#8 + bhi .Loop_block + + str $inp,[sp,#476] + + bl KeccakF1600_int + + add r14,sp,#456 + ldmia r14,{r6-r12,r14} @ restore constants and variables + b .Loop_absorb + +.align 4 +.Labsorbed: + add $inp,sp,#$A[1][0] + ldmia sp, {@C[0]-@C[9]} + stmia $A_flat!,{@C[0]-@C[9]} @ return A[5][5] + ldmia $inp!, {@C[0]-@C[9]} + stmia $A_flat!,{@C[0]-@C[9]} + ldmia $inp!, {@C[0]-@C[9]} + stmia $A_flat!,{@C[0]-@C[9]} + ldmia $inp!, {@C[0]-@C[9]} + stmia $A_flat!,{@C[0]-@C[9]} + ldmia $inp, {@C[0]-@C[9]} + stmia $A_flat, {@C[0]-@C[9]} + +.Labsorb_abort: + add sp,sp,#456+32 + mov r0,$len @ return value + ldmia sp!,{r4-r12,pc} +.size SHA3_absorb,.-SHA3_absorb +___ +} +{ my ($out,$len,$A_flat,$bsz) = map("r$_", (4,5,10,12)); + +$code.=<<___; +.global SHA3_squeeze +.type SHA3_squeeze,%function +.align 5 +SHA3_squeeze: + stmdb sp!,{r0,r3-r10,lr} + + mov $A_flat,r0 + mov $out,r1 + mov $len,r2 + mov $bsz,r3 + +#ifdef __thumb2__ + mov r9,#0x00ff00ff + mov r8,#0x0f0f0f0f + mov r7,#0x33333333 + mov r6,#0x55555555 +#else + mov r6,#0x11 @ compose constants + mov r8,#0x0f + mov r9,#0xff + orr r6,r6,r6,lsl#8 + orr r8,r8,r8,lsl#8 + orr r6,r6,r6,lsl#16 @ 0x11111111 + orr r9,r9,r9,lsl#16 @ 0x00ff00ff + orr r8,r8,r8,lsl#16 @ 0x0f0f0f0f + orr r7,r6,r6,lsl#1 @ 0x33333333 + orr r6,r6,r6,lsl#2 @ 0x55555555 +#endif + stmdb sp!,{r6-r9} + + mov r14,$A_flat + b .Loop_squeeze + +.align 4 +.Loop_squeeze: + ldmia $A_flat!,{r0,r1} @ A_flat[i++] + + lsl r2,r0,#16 + lsl r3,r1,#16 @ r3 = r1 << 16 + lsr r2,r2,#16 @ r2 = r0 & 0x0000ffff + lsr r1,r1,#16 + lsr r0,r0,#16 @ r0 = r0 >> 16 + lsl r1,r1,#16 @ r1 = r1 & 0xffff0000 + + orr r2,r2,r2,lsl#8 + orr r3,r3,r3,lsr#8 + orr r0,r0,r0,lsl#8 + orr r1,r1,r1,lsr#8 + and r2,r2,r9 @ &=0x00ff00ff + and r3,r3,r9,lsl#8 @ &=0xff00ff00 + and r0,r0,r9 @ &=0x00ff00ff + and r1,r1,r9,lsl#8 @ &=0xff00ff00 + orr r2,r2,r2,lsl#4 + orr r3,r3,r3,lsr#4 + orr r0,r0,r0,lsl#4 + orr r1,r1,r1,lsr#4 + and r2,r2,r8 @ &=0x0f0f0f0f + and r3,r3,r8,lsl#4 @ &=0xf0f0f0f0 + and r0,r0,r8 @ &=0x0f0f0f0f + and r1,r1,r8,lsl#4 @ &=0xf0f0f0f0 + orr r2,r2,r2,lsl#2 + orr r3,r3,r3,lsr#2 + orr r0,r0,r0,lsl#2 + orr r1,r1,r1,lsr#2 + and r2,r2,r7 @ &=0x33333333 + and r3,r3,r7,lsl#2 @ &=0xcccccccc + and r0,r0,r7 @ &=0x33333333 + and r1,r1,r7,lsl#2 @ &=0xcccccccc + orr r2,r2,r2,lsl#1 + orr r3,r3,r3,lsr#1 + orr r0,r0,r0,lsl#1 + orr r1,r1,r1,lsr#1 + and r2,r2,r6 @ &=0x55555555 + and r3,r3,r6,lsl#1 @ &=0xaaaaaaaa + and r0,r0,r6 @ &=0x55555555 + and r1,r1,r6,lsl#1 @ &=0xaaaaaaaa + + orr r2,r2,r3 + orr r0,r0,r1 + + cmp $len,#8 + blo .Lsqueeze_tail + lsr r1,r2,#8 + strb r2,[$out],#1 + lsr r3,r2,#16 + strb r1,[$out],#1 + lsr r2,r2,#24 + strb r3,[$out],#1 + strb r2,[$out],#1 + + lsr r1,r0,#8 + strb r0,[$out],#1 + lsr r3,r0,#16 + strb r1,[$out],#1 + lsr r0,r0,#24 + strb r3,[$out],#1 + strb r0,[$out],#1 + subs $len,$len,#8 + beq .Lsqueeze_done + + subs $bsz,$bsz,#8 @ bsz -= 8 + bhi .Loop_squeeze + + mov r0,r14 @ original $A_flat + + bl KeccakF1600 + + ldmia sp,{r6-r10,r12} @ restore constants and variables + mov r14,$A_flat + b .Loop_squeeze + +.align 4 +.Lsqueeze_tail: + strb r2,[$out],#1 + lsr r2,r2,#8 + subs $len,$len,#1 + beq .Lsqueeze_done + strb r2,[$out],#1 + lsr r2,r2,#8 + subs $len,$len,#1 + beq .Lsqueeze_done + strb r2,[$out],#1 + lsr r2,r2,#8 + subs $len,$len,#1 + beq .Lsqueeze_done + strb r2,[$out],#1 + subs $len,$len,#1 + beq .Lsqueeze_done + + strb r0,[$out],#1 + lsr r0,r0,#8 + subs $len,$len,#1 + beq .Lsqueeze_done + strb r0,[$out],#1 + lsr r0,r0,#8 + subs $len,$len,#1 + beq .Lsqueeze_done + strb r0,[$out] + b .Lsqueeze_done + +.align 4 +.Lsqueeze_done: + add sp,sp,#24 + ldmia sp!,{r4-r10,pc} +.size SHA3_squeeze,.-SHA3_squeeze +___ +} + +$code.=<<___; +#if __ARM_MAX_ARCH__>=7 +.fpu neon + +.type iotas64, %object +.align 5 +iotas64: + .quad 0x0000000000000001 + .quad 0x0000000000008082 + .quad 0x800000000000808a + .quad 0x8000000080008000 + .quad 0x000000000000808b + .quad 0x0000000080000001 + .quad 0x8000000080008081 + .quad 0x8000000000008009 + .quad 0x000000000000008a + .quad 0x0000000000000088 + .quad 0x0000000080008009 + .quad 0x000000008000000a + .quad 0x000000008000808b + .quad 0x800000000000008b + .quad 0x8000000000008089 + .quad 0x8000000000008003 + .quad 0x8000000000008002 + .quad 0x8000000000000080 + .quad 0x000000000000800a + .quad 0x800000008000000a + .quad 0x8000000080008081 + .quad 0x8000000000008080 + .quad 0x0000000080000001 + .quad 0x8000000080008008 +.size iotas64,.-iotas64 + +.type KeccakF1600_neon, %function +.align 5 +KeccakF1600_neon: + add r1, r0, #16 + adr r2, iotas64 + mov r3, #24 @ loop counter + b .Loop_neon + +.align 4 +.Loop_neon: + @ Theta + vst1.64 {q4}, [r0:64] @ offload A[0..1][4] + veor q13, q0, q5 @ A[0..1][0]^A[2..3][0] + vst1.64 {d18}, [r1:64] @ offload A[2][4] + veor q14, q1, q6 @ A[0..1][1]^A[2..3][1] + veor q15, q2, q7 @ A[0..1][2]^A[2..3][2] + veor d26, d26, d27 @ C[0]=A[0][0]^A[1][0]^A[2][0]^A[3][0] + veor d27, d28, d29 @ C[1]=A[0][1]^A[1][1]^A[2][1]^A[3][1] + veor q14, q3, q8 @ A[0..1][3]^A[2..3][3] + veor q4, q4, q9 @ A[0..1][4]^A[2..3][4] + veor d30, d30, d31 @ C[2]=A[0][2]^A[1][2]^A[2][2]^A[3][2] + veor d31, d28, d29 @ C[3]=A[0][3]^A[1][3]^A[2][3]^A[3][3] + veor d25, d8, d9 @ C[4]=A[0][4]^A[1][4]^A[2][4]^A[3][4] + veor q13, q13, q10 @ C[0..1]^=A[4][0..1] + veor q14, q15, q11 @ C[2..3]^=A[4][2..3] + veor d25, d25, d24 @ C[4]^=A[4][4] + + vadd.u64 q4, q13, q13 @ C[0..1]<<1 + vadd.u64 q15, q14, q14 @ C[2..3]<<1 + vadd.u64 d18, d25, d25 @ C[4]<<1 + vsri.u64 q4, q13, #63 @ ROL64(C[0..1],1) + vsri.u64 q15, q14, #63 @ ROL64(C[2..3],1) + vsri.u64 d18, d25, #63 @ ROL64(C[4],1) + veor d25, d25, d9 @ D[0] = C[4] ^= ROL64(C[1],1) + veor q13, q13, q15 @ D[1..2] = C[0..1] ^ ROL64(C[2..3],1) + veor d28, d28, d18 @ D[3] = C[2] ^= ROL64(C[4],1) + veor d29, d29, d8 @ D[4] = C[3] ^= ROL64(C[0],1) + + veor d0, d0, d25 @ A[0][0] ^= C[4] + veor d1, d1, d25 @ A[1][0] ^= C[4] + veor d10, d10, d25 @ A[2][0] ^= C[4] + veor d11, d11, d25 @ A[3][0] ^= C[4] + veor d20, d20, d25 @ A[4][0] ^= C[4] + + veor d2, d2, d26 @ A[0][1] ^= D[1] + veor d3, d3, d26 @ A[1][1] ^= D[1] + veor d12, d12, d26 @ A[2][1] ^= D[1] + veor d13, d13, d26 @ A[3][1] ^= D[1] + veor d21, d21, d26 @ A[4][1] ^= D[1] + vmov d26, d27 + + veor d6, d6, d28 @ A[0][3] ^= C[2] + veor d7, d7, d28 @ A[1][3] ^= C[2] + veor d16, d16, d28 @ A[2][3] ^= C[2] + veor d17, d17, d28 @ A[3][3] ^= C[2] + veor d23, d23, d28 @ A[4][3] ^= C[2] + vld1.64 {q4}, [r0:64] @ restore A[0..1][4] + vmov d28, d29 + + vld1.64 {d18}, [r1:64] @ restore A[2][4] + veor q2, q2, q13 @ A[0..1][2] ^= D[2] + veor q7, q7, q13 @ A[2..3][2] ^= D[2] + veor d22, d22, d27 @ A[4][2] ^= D[2] + + veor q4, q4, q14 @ A[0..1][4] ^= C[3] + veor q9, q9, q14 @ A[2..3][4] ^= C[3] + veor d24, d24, d29 @ A[4][4] ^= C[3] + + @ Rho + Pi + vmov d26, d2 @ C[1] = A[0][1] + vshl.u64 d2, d3, #44 + vmov d27, d4 @ C[2] = A[0][2] + vshl.u64 d4, d14, #43 + vmov d28, d6 @ C[3] = A[0][3] + vshl.u64 d6, d17, #21 + vmov d29, d8 @ C[4] = A[0][4] + vshl.u64 d8, d24, #14 + vsri.u64 d2, d3, #64-44 @ A[0][1] = ROL64(A[1][1], rhotates[1][1]) + vsri.u64 d4, d14, #64-43 @ A[0][2] = ROL64(A[2][2], rhotates[2][2]) + vsri.u64 d6, d17, #64-21 @ A[0][3] = ROL64(A[3][3], rhotates[3][3]) + vsri.u64 d8, d24, #64-14 @ A[0][4] = ROL64(A[4][4], rhotates[4][4]) + + vshl.u64 d3, d9, #20 + vshl.u64 d14, d16, #25 + vshl.u64 d17, d15, #15 + vshl.u64 d24, d21, #2 + vsri.u64 d3, d9, #64-20 @ A[1][1] = ROL64(A[1][4], rhotates[1][4]) + vsri.u64 d14, d16, #64-25 @ A[2][2] = ROL64(A[2][3], rhotates[2][3]) + vsri.u64 d17, d15, #64-15 @ A[3][3] = ROL64(A[3][2], rhotates[3][2]) + vsri.u64 d24, d21, #64-2 @ A[4][4] = ROL64(A[4][1], rhotates[4][1]) + + vshl.u64 d9, d22, #61 + @ vshl.u64 d16, d19, #8 + vshl.u64 d15, d12, #10 + vshl.u64 d21, d7, #55 + vsri.u64 d9, d22, #64-61 @ A[1][4] = ROL64(A[4][2], rhotates[4][2]) + vext.8 d16, d19, d19, #8-1 @ A[2][3] = ROL64(A[3][4], rhotates[3][4]) + vsri.u64 d15, d12, #64-10 @ A[3][2] = ROL64(A[2][1], rhotates[2][1]) + vsri.u64 d21, d7, #64-55 @ A[4][1] = ROL64(A[1][3], rhotates[1][3]) + + vshl.u64 d22, d18, #39 + @ vshl.u64 d19, d23, #56 + vshl.u64 d12, d5, #6 + vshl.u64 d7, d13, #45 + vsri.u64 d22, d18, #64-39 @ A[4][2] = ROL64(A[2][4], rhotates[2][4]) + vext.8 d19, d23, d23, #8-7 @ A[3][4] = ROL64(A[4][3], rhotates[4][3]) + vsri.u64 d12, d5, #64-6 @ A[2][1] = ROL64(A[1][2], rhotates[1][2]) + vsri.u64 d7, d13, #64-45 @ A[1][3] = ROL64(A[3][1], rhotates[3][1]) + + vshl.u64 d18, d20, #18 + vshl.u64 d23, d11, #41 + vshl.u64 d5, d10, #3 + vshl.u64 d13, d1, #36 + vsri.u64 d18, d20, #64-18 @ A[2][4] = ROL64(A[4][0], rhotates[4][0]) + vsri.u64 d23, d11, #64-41 @ A[4][3] = ROL64(A[3][0], rhotates[3][0]) + vsri.u64 d5, d10, #64-3 @ A[1][2] = ROL64(A[2][0], rhotates[2][0]) + vsri.u64 d13, d1, #64-36 @ A[3][1] = ROL64(A[1][0], rhotates[1][0]) + + vshl.u64 d1, d28, #28 + vshl.u64 d10, d26, #1 + vshl.u64 d11, d29, #27 + vshl.u64 d20, d27, #62 + vsri.u64 d1, d28, #64-28 @ A[1][0] = ROL64(C[3], rhotates[0][3]) + vsri.u64 d10, d26, #64-1 @ A[2][0] = ROL64(C[1], rhotates[0][1]) + vsri.u64 d11, d29, #64-27 @ A[3][0] = ROL64(C[4], rhotates[0][4]) + vsri.u64 d20, d27, #64-62 @ A[4][0] = ROL64(C[2], rhotates[0][2]) + + @ Chi + Iota + vbic q13, q2, q1 + vbic q14, q3, q2 + vbic q15, q4, q3 + veor q13, q13, q0 @ A[0..1][0] ^ (~A[0..1][1] & A[0..1][2]) + veor q14, q14, q1 @ A[0..1][1] ^ (~A[0..1][2] & A[0..1][3]) + veor q2, q2, q15 @ A[0..1][2] ^= (~A[0..1][3] & A[0..1][4]) + vst1.64 {q13}, [r0:64] @ offload A[0..1][0] + vbic q13, q0, q4 + vbic q15, q1, q0 + vmov q1, q14 @ A[0..1][1] + veor q3, q3, q13 @ A[0..1][3] ^= (~A[0..1][4] & A[0..1][0]) + veor q4, q4, q15 @ A[0..1][4] ^= (~A[0..1][0] & A[0..1][1]) + + vbic q13, q7, q6 + vmov q0, q5 @ A[2..3][0] + vbic q14, q8, q7 + vmov q15, q6 @ A[2..3][1] + veor q5, q5, q13 @ A[2..3][0] ^= (~A[2..3][1] & A[2..3][2]) + vbic q13, q9, q8 + veor q6, q6, q14 @ A[2..3][1] ^= (~A[2..3][2] & A[2..3][3]) + vbic q14, q0, q9 + veor q7, q7, q13 @ A[2..3][2] ^= (~A[2..3][3] & A[2..3][4]) + vbic q13, q15, q0 + veor q8, q8, q14 @ A[2..3][3] ^= (~A[2..3][4] & A[2..3][0]) + vmov q14, q10 @ A[4][0..1] + veor q9, q9, q13 @ A[2..3][4] ^= (~A[2..3][0] & A[2..3][1]) + + vld1.64 d25, [r2:64]! @ Iota[i++] + vbic d26, d22, d21 + vbic d27, d23, d22 + vld1.64 {q0}, [r0:64] @ restore A[0..1][0] + veor d20, d20, d26 @ A[4][0] ^= (~A[4][1] & A[4][2]) + vbic d26, d24, d23 + veor d21, d21, d27 @ A[4][1] ^= (~A[4][2] & A[4][3]) + vbic d27, d28, d24 + veor d22, d22, d26 @ A[4][2] ^= (~A[4][3] & A[4][4]) + vbic d26, d29, d28 + veor d23, d23, d27 @ A[4][3] ^= (~A[4][4] & A[4][0]) + veor d0, d0, d25 @ A[0][0] ^= Iota[i] + veor d24, d24, d26 @ A[4][4] ^= (~A[4][0] & A[4][1]) + + subs r3, r3, #1 + bne .Loop_neon + + bx lr +.size KeccakF1600_neon,.-KeccakF1600_neon + +.global SHA3_absorb_neon +.type SHA3_absorb_neon, %function +.align 5 +SHA3_absorb_neon: + stmdb sp!, {r4-r6,lr} + vstmdb sp!, {d8-d15} + + mov r4, r1 @ inp + mov r5, r2 @ len + mov r6, r3 @ bsz + + vld1.32 {d0}, [r0:64]! @ A[0][0] + vld1.32 {d2}, [r0:64]! @ A[0][1] + vld1.32 {d4}, [r0:64]! @ A[0][2] + vld1.32 {d6}, [r0:64]! @ A[0][3] + vld1.32 {d8}, [r0:64]! @ A[0][4] + + vld1.32 {d1}, [r0:64]! @ A[1][0] + vld1.32 {d3}, [r0:64]! @ A[1][1] + vld1.32 {d5}, [r0:64]! @ A[1][2] + vld1.32 {d7}, [r0:64]! @ A[1][3] + vld1.32 {d9}, [r0:64]! @ A[1][4] + + vld1.32 {d10}, [r0:64]! @ A[2][0] + vld1.32 {d12}, [r0:64]! @ A[2][1] + vld1.32 {d14}, [r0:64]! @ A[2][2] + vld1.32 {d16}, [r0:64]! @ A[2][3] + vld1.32 {d18}, [r0:64]! @ A[2][4] + + vld1.32 {d11}, [r0:64]! @ A[3][0] + vld1.32 {d13}, [r0:64]! @ A[3][1] + vld1.32 {d15}, [r0:64]! @ A[3][2] + vld1.32 {d17}, [r0:64]! @ A[3][3] + vld1.32 {d19}, [r0:64]! @ A[3][4] + + vld1.32 {d20-d23}, [r0:64]! @ A[4][0..3] + vld1.32 {d24}, [r0:64] @ A[4][4] + sub r0, r0, #24*8 @ rewind + b .Loop_absorb_neon + +.align 4 +.Loop_absorb_neon: + subs r12, r5, r6 @ len - bsz + blo .Labsorbed_neon + mov r5, r12 + + vld1.8 {d31}, [r4]! @ endian-neutral loads... + cmp r6, #8*2 + veor d0, d0, d31 @ A[0][0] ^= *inp++ + blo .Lprocess_neon + vld1.8 {d31}, [r4]! + veor d2, d2, d31 @ A[0][1] ^= *inp++ + beq .Lprocess_neon + vld1.8 {d31}, [r4]! + cmp r6, #8*4 + veor d4, d4, d31 @ A[0][2] ^= *inp++ + blo .Lprocess_neon + vld1.8 {d31}, [r4]! + veor d6, d6, d31 @ A[0][3] ^= *inp++ + beq .Lprocess_neon + vld1.8 {d31},[r4]! + cmp r6, #8*6 + veor d8, d8, d31 @ A[0][4] ^= *inp++ + blo .Lprocess_neon + + vld1.8 {d31}, [r4]! + veor d1, d1, d31 @ A[1][0] ^= *inp++ + beq .Lprocess_neon + vld1.8 {d31}, [r4]! + cmp r6, #8*8 + veor d3, d3, d31 @ A[1][1] ^= *inp++ + blo .Lprocess_neon + vld1.8 {d31}, [r4]! + veor d5, d5, d31 @ A[1][2] ^= *inp++ + beq .Lprocess_neon + vld1.8 {d31}, [r4]! + cmp r6, #8*10 + veor d7, d7, d31 @ A[1][3] ^= *inp++ + blo .Lprocess_neon + vld1.8 {d31}, [r4]! + veor d9, d9, d31 @ A[1][4] ^= *inp++ + beq .Lprocess_neon + + vld1.8 {d31}, [r4]! + cmp r6, #8*12 + veor d10, d10, d31 @ A[2][0] ^= *inp++ + blo .Lprocess_neon + vld1.8 {d31}, [r4]! + veor d12, d12, d31 @ A[2][1] ^= *inp++ + beq .Lprocess_neon + vld1.8 {d31}, [r4]! + cmp r6, #8*14 + veor d14, d14, d31 @ A[2][2] ^= *inp++ + blo .Lprocess_neon + vld1.8 {d31}, [r4]! + veor d16, d16, d31 @ A[2][3] ^= *inp++ + beq .Lprocess_neon + vld1.8 {d31}, [r4]! + cmp r6, #8*16 + veor d18, d18, d31 @ A[2][4] ^= *inp++ + blo .Lprocess_neon + + vld1.8 {d31}, [r4]! + veor d11, d11, d31 @ A[3][0] ^= *inp++ + beq .Lprocess_neon + vld1.8 {d31}, [r4]! + cmp r6, #8*18 + veor d13, d13, d31 @ A[3][1] ^= *inp++ + blo .Lprocess_neon + vld1.8 {d31}, [r4]! + veor d15, d15, d31 @ A[3][2] ^= *inp++ + beq .Lprocess_neon + vld1.8 {d31}, [r4]! + cmp r6, #8*20 + veor d17, d17, d31 @ A[3][3] ^= *inp++ + blo .Lprocess_neon + vld1.8 {d31}, [r4]! + veor d19, d19, d31 @ A[3][4] ^= *inp++ + beq .Lprocess_neon + + vld1.8 {d31}, [r4]! + cmp r6, #8*22 + veor d20, d20, d31 @ A[4][0] ^= *inp++ + blo .Lprocess_neon + vld1.8 {d31}, [r4]! + veor d21, d21, d31 @ A[4][1] ^= *inp++ + beq .Lprocess_neon + vld1.8 {d31}, [r4]! + cmp r6, #8*24 + veor d22, d22, d31 @ A[4][2] ^= *inp++ + blo .Lprocess_neon + vld1.8 {d31}, [r4]! + veor d23, d23, d31 @ A[4][3] ^= *inp++ + beq .Lprocess_neon + vld1.8 {d31}, [r4]! + veor d24, d24, d31 @ A[4][4] ^= *inp++ + +.Lprocess_neon: + bl KeccakF1600_neon + b .Loop_absorb_neon + +.align 4 +.Labsorbed_neon: + vst1.32 {d0}, [r0:64]! @ A[0][0..4] + vst1.32 {d2}, [r0:64]! + vst1.32 {d4}, [r0:64]! + vst1.32 {d6}, [r0:64]! + vst1.32 {d8}, [r0:64]! + + vst1.32 {d1}, [r0:64]! @ A[1][0..4] + vst1.32 {d3}, [r0:64]! + vst1.32 {d5}, [r0:64]! + vst1.32 {d7}, [r0:64]! + vst1.32 {d9}, [r0:64]! + + vst1.32 {d10}, [r0:64]! @ A[2][0..4] + vst1.32 {d12}, [r0:64]! + vst1.32 {d14}, [r0:64]! + vst1.32 {d16}, [r0:64]! + vst1.32 {d18}, [r0:64]! + + vst1.32 {d11}, [r0:64]! @ A[3][0..4] + vst1.32 {d13}, [r0:64]! + vst1.32 {d15}, [r0:64]! + vst1.32 {d17}, [r0:64]! + vst1.32 {d19}, [r0:64]! + + vst1.32 {d20-d23}, [r0:64]! @ A[4][0..4] + vst1.32 {d24}, [r0:64] + + mov r0, r5 @ return value + vldmia sp!, {d8-d15} + ldmia sp!, {r4-r6,pc} +.size SHA3_absorb_neon,.-SHA3_absorb_neon + +.global SHA3_squeeze_neon +.type SHA3_squeeze_neon, %function +.align 5 +SHA3_squeeze_neon: + stmdb sp!, {r4-r6,lr} + + mov r4, r1 @ out + mov r5, r2 @ len + mov r6, r3 @ bsz + mov r12, r0 @ A_flat + mov r14, r3 @ bsz + b .Loop_squeeze_neon + +.align 4 +.Loop_squeeze_neon: + cmp r5, #8 + blo .Lsqueeze_neon_tail + vld1.32 {d0}, [r12]! + vst1.8 {d0}, [r4]! @ endian-neutral store + + subs r5, r5, #8 @ len -= 8 + beq .Lsqueeze_neon_done + + subs r14, r14, #8 @ bsz -= 8 + bhi .Loop_squeeze_neon + + vstmdb sp!, {d8-d15} + + vld1.32 {d0}, [r0:64]! @ A[0][0..4] + vld1.32 {d2}, [r0:64]! + vld1.32 {d4}, [r0:64]! + vld1.32 {d6}, [r0:64]! + vld1.32 {d8}, [r0:64]! + + vld1.32 {d1}, [r0:64]! @ A[1][0..4] + vld1.32 {d3}, [r0:64]! + vld1.32 {d5}, [r0:64]! + vld1.32 {d7}, [r0:64]! + vld1.32 {d9}, [r0:64]! + + vld1.32 {d10}, [r0:64]! @ A[2][0..4] + vld1.32 {d12}, [r0:64]! + vld1.32 {d14}, [r0:64]! + vld1.32 {d16}, [r0:64]! + vld1.32 {d18}, [r0:64]! + + vld1.32 {d11}, [r0:64]! @ A[3][0..4] + vld1.32 {d13}, [r0:64]! + vld1.32 {d15}, [r0:64]! + vld1.32 {d17}, [r0:64]! + vld1.32 {d19}, [r0:64]! + + vld1.32 {d20-d23}, [r0:64]! @ A[4][0..4] + vld1.32 {d24}, [r0:64] + sub r0, r0, #24*8 @ rewind + + bl KeccakF1600_neon + + mov r12, r0 @ A_flat + vst1.32 {d0}, [r0:64]! @ A[0][0..4] + vst1.32 {d2}, [r0:64]! + vst1.32 {d4}, [r0:64]! + vst1.32 {d6}, [r0:64]! + vst1.32 {d8}, [r0:64]! + + vst1.32 {d1}, [r0:64]! @ A[1][0..4] + vst1.32 {d3}, [r0:64]! + vst1.32 {d5}, [r0:64]! + vst1.32 {d7}, [r0:64]! + vst1.32 {d9}, [r0:64]! + + vst1.32 {d10}, [r0:64]! @ A[2][0..4] + vst1.32 {d12}, [r0:64]! + vst1.32 {d14}, [r0:64]! + vst1.32 {d16}, [r0:64]! + vst1.32 {d18}, [r0:64]! + + vst1.32 {d11}, [r0:64]! @ A[3][0..4] + vst1.32 {d13}, [r0:64]! + vst1.32 {d15}, [r0:64]! + vst1.32 {d17}, [r0:64]! + vst1.32 {d19}, [r0:64]! + + vst1.32 {d20-d23}, [r0:64]! @ A[4][0..4] + mov r14, r6 @ bsz + vst1.32 {d24}, [r0:64] + mov r0, r12 @ rewind + + vldmia sp!, {d8-d15} + b .Loop_squeeze_neon + +.align 4 +.Lsqueeze_neon_tail: + ldmia r12, {r2,r3} + cmp r5, #2 + strb r2, [r4],#1 @ endian-neutral store + lsr r2, r2, #8 + blo .Lsqueeze_neon_done + strb r2, [r4], #1 + lsr r2, r2, #8 + beq .Lsqueeze_neon_done + strb r2, [r4], #1 + lsr r2, r2, #8 + cmp r5, #4 + blo .Lsqueeze_neon_done + strb r2, [r4], #1 + beq .Lsqueeze_neon_done + + strb r3, [r4], #1 + lsr r3, r3, #8 + cmp r5, #6 + blo .Lsqueeze_neon_done + strb r3, [r4], #1 + lsr r3, r3, #8 + beq .Lsqueeze_neon_done + strb r3, [r4], #1 + +.Lsqueeze_neon_done: + ldmia sp!, {r4-r6,pc} +.size SHA3_squeeze_neon,.-SHA3_squeeze_neon +#endif +.asciz "Keccak-1600 absorb and squeeze for ARMv4/NEON, CRYPTOGAMS by <appro\@openssl.org>" +.align 2 +___ + +{ + my %ldr, %str; + + sub ldrd { + my ($mnemonic,$half,$reg,$ea) = @_; + my $op = $mnemonic eq "ldr" ? \%ldr : \%str; + + if ($half eq "l") { + $$op{reg} = $reg; + $$op{ea} = $ea; + sprintf "#ifndef __thumb2__\n" . + " %s\t%s,%s\n" . + "#endif", $mnemonic,$reg,$ea; + } else { + sprintf "#ifndef __thumb2__\n" . + " %s\t%s,%s\n" . + "#else\n" . + " %sd\t%s,%s,%s\n" . + "#endif", $mnemonic,$reg,$ea, + $mnemonic,$$op{reg},$reg,$$op{ea}; + } + } +} + +foreach (split($/,$code)) { + s/\`([^\`]*)\`/eval $1/ge; + + s/^\s+(ldr|str)\.([lh])\s+(r[0-9]+),\s*(\[.*)/ldrd($1,$2,$3,$4)/ge or + s/\b(ror|ls[rl])\s+(r[0-9]+.*)#/mov $2$1#/g or + s/\bret\b/bx lr/g or + s/\bbx\s+lr\b/.word\t0xe12fff1e/g; # make it possible to compile with -march=armv4 + + print $_,"\n"; +} + +close STDOUT; # enforce flush |