From: "Jason A. Donenfeld" Subject: [PATCH net-next v6 06/23] zinc: port Andy Polyakov's ChaCha20 ARM and ARM64 implementations Date: Tue, 25 Sep 2018 16:56:05 +0200 Message-ID: <20180925145622.29959-7-Jason@zx2c4.com> References: <20180925145622.29959-1-Jason@zx2c4.com> Mime-Version: 1.0 Content-Transfer-Encoding: 8bit Cc: "Jason A. Donenfeld" , Samuel Neves , Andy Lutomirski , Jean-Philippe Aumasson , Russell King , linux-arm-kernel@lists.infradead.org To: linux-kernel@vger.kernel.org, netdev@vger.kernel.org, linux-crypto@vger.kernel.org, davem@davemloft.net, gregkh@linuxfoundation.org Return-path: In-Reply-To: <20180925145622.29959-1-Jason@zx2c4.com> Sender: linux-kernel-owner@vger.kernel.org List-Id: linux-crypto.vger.kernel.org These port and prepare Andy Polyakov's implementations for the kernel, but don't actually wire up any of the code yet. The wiring will be done in a subsequent commit, since we'll need to merge these implementations with another one. We make a few small changes to the assembly: - Entries and exits use the proper kernel convention macro. - CPU feature checking is done in C by the glue code, so that has been removed from the assembly. - The function names have been renamed to fit kernel conventions. - Labels have been renamed (prefixed with .L) to fit kernel conventions. - Constants have been rearranged so that they are closer to the code that is using them. [ARM only] - The neon code can jump to the scalar code when it makes sense to do so. - The neon_512 function as a separate function has been removed, leaving the decision up to the main neon entry point. [ARM64 only] Signed-off-by: Jason A. Donenfeld Cc: Samuel Neves Cc: Andy Lutomirski Cc: Greg KH Cc: Jean-Philippe Aumasson Cc: Russell King Cc: linux-arm-kernel@lists.infradead.org --- lib/zinc/chacha20/chacha20-arm-cryptogams.S | 367 +++++++++--------- lib/zinc/chacha20/chacha20-arm64-cryptogams.S | 57 +-- 2 files changed, 193 insertions(+), 231 deletions(-) diff --git a/lib/zinc/chacha20/chacha20-arm-cryptogams.S b/lib/zinc/chacha20/chacha20-arm-cryptogams.S index 05a3a9e6e93f..770bab469171 100644 --- a/lib/zinc/chacha20/chacha20-arm-cryptogams.S +++ b/lib/zinc/chacha20/chacha20-arm-cryptogams.S @@ -1,9 +1,12 @@ /* SPDX-License-Identifier: GPL-2.0 OR BSD-3-Clause */ /* + * Copyright (C) 2015-2018 Jason A. Donenfeld . All Rights Reserved. * Copyright (C) 2006-2017 CRYPTOGAMS by . All Rights Reserved. + * + * This is based in part on Andy Polyakov's implementation from CRYPTOGAMS. */ -#include "arm_arch.h" +#include .text #if defined(__thumb2__) || defined(__clang__) @@ -24,48 +27,25 @@ .long 0x61707865,0x3320646e,0x79622d32,0x6b206574 @ endian-neutral .Lone: .long 1,0,0,0 -.Lrot8: -.long 0x02010003,0x06050407 -#if __ARM_MAX_ARCH__>=7 -.LOPENSSL_armcap: -.word OPENSSL_armcap_P-.LChaCha20_ctr32 -#else .word -1 -#endif -.globl ChaCha20_ctr32 -.type ChaCha20_ctr32,%function .align 5 -ChaCha20_ctr32: -.LChaCha20_ctr32: +ENTRY(chacha20_arm) ldr r12,[sp,#0] @ pull pointer to counter and nonce stmdb sp!,{r0-r2,r4-r11,lr} -#if __ARM_ARCH__<7 && !defined(__thumb2__) - sub r14,pc,#16 @ ChaCha20_ctr32 -#else - adr r14,.LChaCha20_ctr32 -#endif cmp r2,#0 @ len==0? -#ifdef __thumb2__ +#ifdef __thumb2__ itt eq #endif addeq sp,sp,#4*3 - beq .Lno_data -#if __ARM_MAX_ARCH__>=7 - cmp r2,#192 @ test len - bls .Lshort - ldr r4,[r14,#-24] - ldr r4,[r14,r4] -# ifdef __APPLE__ - ldr r4,[r4] -# endif - tst r4,#ARMV7_NEON - bne .LChaCha20_neon -.Lshort: -#endif + beq .Lno_data_arm ldmia r12,{r4-r7} @ load counter and nonce sub sp,sp,#4*(16) @ off-load area - sub r14,r14,#64 @ .Lsigma +#if __LINUX_ARM_ARCH__ < 7 && !defined(__thumb2__) + sub r14,pc,#100 @ .Lsigma +#else + adr r14,.Lsigma @ .Lsigma +#endif stmdb sp!,{r4-r7} @ copy counter and nonce ldmia r3,{r4-r11} @ load key ldmia r14,{r0-r3} @ load sigma @@ -191,7 +171,7 @@ ChaCha20_ctr32: @ rx and second half at sp+4*(16+8) cmp r11,#64 @ done yet? -#ifdef __thumb2__ +#ifdef __thumb2__ itete lo #endif addlo r12,sp,#4*(0) @ shortcut or ... @@ -202,49 +182,49 @@ ChaCha20_ctr32: ldr r8,[sp,#4*(0)] @ load key material ldr r9,[sp,#4*(1)] -#if __ARM_ARCH__>=6 || !defined(__ARMEB__) -# if __ARM_ARCH__<7 +#if __LINUX_ARM_ARCH__ >= 6 || !defined(__ARMEB__) +#if __LINUX_ARM_ARCH__ < 7 orr r10,r12,r14 tst r10,#3 @ are input and output aligned? ldr r10,[sp,#4*(2)] bne .Lunaligned cmp r11,#64 @ restore flags -# else +#else ldr r10,[sp,#4*(2)] -# endif +#endif ldr r11,[sp,#4*(3)] add r0,r0,r8 @ accumulate key material add r1,r1,r9 -# ifdef __thumb2__ +#ifdef __thumb2__ itt hs -# endif +#endif ldrhs r8,[r12],#16 @ load input ldrhs r9,[r12,#-12] add r2,r2,r10 add r3,r3,r11 -# ifdef __thumb2__ +#ifdef __thumb2__ itt hs -# endif +#endif ldrhs r10,[r12,#-8] ldrhs r11,[r12,#-4] -# if __ARM_ARCH__>=6 && defined(__ARMEB__) +#if __LINUX_ARM_ARCH__ >= 6 && defined(__ARMEB__) rev r0,r0 rev r1,r1 rev r2,r2 rev r3,r3 -# endif -# ifdef __thumb2__ +#endif +#ifdef __thumb2__ itt hs -# endif +#endif eorhs r0,r0,r8 @ xor with input eorhs r1,r1,r9 add r8,sp,#4*(4) str r0,[r14],#16 @ store output -# ifdef __thumb2__ +#ifdef __thumb2__ itt hs -# endif +#endif eorhs r2,r2,r10 eorhs r3,r3,r11 ldmia r8,{r8-r11} @ load key material @@ -254,34 +234,34 @@ ChaCha20_ctr32: add r4,r8,r4,ror#13 @ accumulate key material add r5,r9,r5,ror#13 -# ifdef __thumb2__ +#ifdef __thumb2__ itt hs -# endif +#endif ldrhs r8,[r12],#16 @ load input ldrhs r9,[r12,#-12] add r6,r10,r6,ror#13 add r7,r11,r7,ror#13 -# ifdef __thumb2__ +#ifdef __thumb2__ itt hs -# endif +#endif ldrhs r10,[r12,#-8] ldrhs r11,[r12,#-4] -# if __ARM_ARCH__>=6 && defined(__ARMEB__) +#if __LINUX_ARM_ARCH__ >= 6 && defined(__ARMEB__) rev r4,r4 rev r5,r5 rev r6,r6 rev r7,r7 -# endif -# ifdef __thumb2__ +#endif +#ifdef __thumb2__ itt hs -# endif +#endif eorhs r4,r4,r8 eorhs r5,r5,r9 add r8,sp,#4*(8) str r4,[r14],#16 @ store output -# ifdef __thumb2__ +#ifdef __thumb2__ itt hs -# endif +#endif eorhs r6,r6,r10 eorhs r7,r7,r11 str r5,[r14,#-12] @@ -294,39 +274,39 @@ ChaCha20_ctr32: add r0,r0,r8 @ accumulate key material add r1,r1,r9 -# ifdef __thumb2__ +#ifdef __thumb2__ itt hs -# endif +#endif ldrhs r8,[r12],#16 @ load input ldrhs r9,[r12,#-12] -# ifdef __thumb2__ +#ifdef __thumb2__ itt hi -# endif +#endif strhi r10,[sp,#4*(16+10)] @ copy "rx" while at it strhi r11,[sp,#4*(16+11)] @ copy "rx" while at it add r2,r2,r10 add r3,r3,r11 -# ifdef __thumb2__ +#ifdef __thumb2__ itt hs -# endif +#endif ldrhs r10,[r12,#-8] ldrhs r11,[r12,#-4] -# if __ARM_ARCH__>=6 && defined(__ARMEB__) +#if __LINUX_ARM_ARCH__ >= 6 && defined(__ARMEB__) rev r0,r0 rev r1,r1 rev r2,r2 rev r3,r3 -# endif -# ifdef __thumb2__ +#endif +#ifdef __thumb2__ itt hs -# endif +#endif eorhs r0,r0,r8 eorhs r1,r1,r9 add r8,sp,#4*(12) str r0,[r14],#16 @ store output -# ifdef __thumb2__ +#ifdef __thumb2__ itt hs -# endif +#endif eorhs r2,r2,r10 eorhs r3,r3,r11 str r1,[r14,#-12] @@ -336,79 +316,79 @@ ChaCha20_ctr32: add r4,r8,r4,ror#24 @ accumulate key material add r5,r9,r5,ror#24 -# ifdef __thumb2__ +#ifdef __thumb2__ itt hi -# endif +#endif addhi r8,r8,#1 @ next counter value strhi r8,[sp,#4*(12)] @ save next counter value -# ifdef __thumb2__ +#ifdef __thumb2__ itt hs -# endif +#endif ldrhs r8,[r12],#16 @ load input ldrhs r9,[r12,#-12] add r6,r10,r6,ror#24 add r7,r11,r7,ror#24 -# ifdef __thumb2__ +#ifdef __thumb2__ itt hs -# endif +#endif ldrhs r10,[r12,#-8] ldrhs r11,[r12,#-4] -# if __ARM_ARCH__>=6 && defined(__ARMEB__) +#if __LINUX_ARM_ARCH__ >= 6 && defined(__ARMEB__) rev r4,r4 rev r5,r5 rev r6,r6 rev r7,r7 -# endif -# ifdef __thumb2__ +#endif +#ifdef __thumb2__ itt hs -# endif +#endif eorhs r4,r4,r8 eorhs r5,r5,r9 -# ifdef __thumb2__ +#ifdef __thumb2__ it ne -# endif +#endif ldrne r8,[sp,#4*(32+2)] @ re-load len -# ifdef __thumb2__ +#ifdef __thumb2__ itt hs -# endif +#endif eorhs r6,r6,r10 eorhs r7,r7,r11 str r4,[r14],#16 @ store output str r5,[r14,#-12] -# ifdef __thumb2__ +#ifdef __thumb2__ it hs -# endif +#endif subhs r11,r8,#64 @ len-=64 str r6,[r14,#-8] str r7,[r14,#-4] bhi .Loop_outer beq .Ldone -# if __ARM_ARCH__<7 +#if __LINUX_ARM_ARCH__ < 7 b .Ltail .align 4 .Lunaligned: @ unaligned endian-neutral path cmp r11,#64 @ restore flags -# endif #endif -#if __ARM_ARCH__<7 +#endif +#if __LINUX_ARM_ARCH__ < 7 ldr r11,[sp,#4*(3)] add r0,r8,r0 @ accumulate key material add r1,r9,r1 add r2,r10,r2 -# ifdef __thumb2__ +#ifdef __thumb2__ itete lo -# endif +#endif eorlo r8,r8,r8 @ zero or ... ldrhsb r8,[r12],#16 @ ... load input eorlo r9,r9,r9 ldrhsb r9,[r12,#-12] add r3,r11,r3 -# ifdef __thumb2__ +#ifdef __thumb2__ itete lo -# endif +#endif eorlo r10,r10,r10 ldrhsb r10,[r12,#-8] eorlo r11,r11,r11 @@ -416,53 +396,53 @@ ChaCha20_ctr32: eor r0,r8,r0 @ xor with input (or zero) eor r1,r9,r1 -# ifdef __thumb2__ +#ifdef __thumb2__ itt hs -# endif +#endif ldrhsb r8,[r12,#-15] @ load more input ldrhsb r9,[r12,#-11] eor r2,r10,r2 strb r0,[r14],#16 @ store output eor r3,r11,r3 -# ifdef __thumb2__ +#ifdef __thumb2__ itt hs -# endif +#endif ldrhsb r10,[r12,#-7] ldrhsb r11,[r12,#-3] strb r1,[r14,#-12] eor r0,r8,r0,lsr#8 strb r2,[r14,#-8] eor r1,r9,r1,lsr#8 -# ifdef __thumb2__ +#ifdef __thumb2__ itt hs -# endif +#endif ldrhsb r8,[r12,#-14] @ load more input ldrhsb r9,[r12,#-10] strb r3,[r14,#-4] eor r2,r10,r2,lsr#8 strb r0,[r14,#-15] eor r3,r11,r3,lsr#8 -# ifdef __thumb2__ +#ifdef __thumb2__ itt hs -# endif +#endif ldrhsb r10,[r12,#-6] ldrhsb r11,[r12,#-2] strb r1,[r14,#-11] eor r0,r8,r0,lsr#8 strb r2,[r14,#-7] eor r1,r9,r1,lsr#8 -# ifdef __thumb2__ +#ifdef __thumb2__ itt hs -# endif +#endif ldrhsb r8,[r12,#-13] @ load more input ldrhsb r9,[r12,#-9] strb r3,[r14,#-3] eor r2,r10,r2,lsr#8 strb r0,[r14,#-14] eor r3,r11,r3,lsr#8 -# ifdef __thumb2__ +#ifdef __thumb2__ itt hs -# endif +#endif ldrhsb r10,[r12,#-5] ldrhsb r11,[r12,#-1] strb r1,[r14,#-10] @@ -482,18 +462,18 @@ ChaCha20_ctr32: add r4,r8,r4,ror#13 @ accumulate key material add r5,r9,r5,ror#13 add r6,r10,r6,ror#13 -# ifdef __thumb2__ +#ifdef __thumb2__ itete lo -# endif +#endif eorlo r8,r8,r8 @ zero or ... ldrhsb r8,[r12],#16 @ ... load input eorlo r9,r9,r9 ldrhsb r9,[r12,#-12] add r7,r11,r7,ror#13 -# ifdef __thumb2__ +#ifdef __thumb2__ itete lo -# endif +#endif eorlo r10,r10,r10 ldrhsb r10,[r12,#-8] eorlo r11,r11,r11 @@ -501,53 +481,53 @@ ChaCha20_ctr32: eor r4,r8,r4 @ xor with input (or zero) eor r5,r9,r5 -# ifdef __thumb2__ +#ifdef __thumb2__ itt hs -# endif +#endif ldrhsb r8,[r12,#-15] @ load more input ldrhsb r9,[r12,#-11] eor r6,r10,r6 strb r4,[r14],#16 @ store output eor r7,r11,r7 -# ifdef __thumb2__ +#ifdef __thumb2__ itt hs -# endif +#endif ldrhsb r10,[r12,#-7] ldrhsb r11,[r12,#-3] strb r5,[r14,#-12] eor r4,r8,r4,lsr#8 strb r6,[r14,#-8] eor r5,r9,r5,lsr#8 -# ifdef __thumb2__ +#ifdef __thumb2__ itt hs -# endif +#endif ldrhsb r8,[r12,#-14] @ load more input ldrhsb r9,[r12,#-10] strb r7,[r14,#-4] eor r6,r10,r6,lsr#8 strb r4,[r14,#-15] eor r7,r11,r7,lsr#8 -# ifdef __thumb2__ +#ifdef __thumb2__ itt hs -# endif +#endif ldrhsb r10,[r12,#-6] ldrhsb r11,[r12,#-2] strb r5,[r14,#-11] eor r4,r8,r4,lsr#8 strb r6,[r14,#-7] eor r5,r9,r5,lsr#8 -# ifdef __thumb2__ +#ifdef __thumb2__ itt hs -# endif +#endif ldrhsb r8,[r12,#-13] @ load more input ldrhsb r9,[r12,#-9] strb r7,[r14,#-3] eor r6,r10,r6,lsr#8 strb r4,[r14,#-14] eor r7,r11,r7,lsr#8 -# ifdef __thumb2__ +#ifdef __thumb2__ itt hs -# endif +#endif ldrhsb r10,[r12,#-5] ldrhsb r11,[r12,#-1] strb r5,[r14,#-10] @@ -564,26 +544,26 @@ ChaCha20_ctr32: add r8,sp,#4*(4+4) ldmia r8,{r8-r11} @ load key material ldmia r0,{r0-r7} @ load second half -# ifdef __thumb2__ +#ifdef __thumb2__ itt hi -# endif +#endif strhi r10,[sp,#4*(16+10)] @ copy "rx" strhi r11,[sp,#4*(16+11)] @ copy "rx" add r0,r8,r0 @ accumulate key material add r1,r9,r1 add r2,r10,r2 -# ifdef __thumb2__ +#ifdef __thumb2__ itete lo -# endif +#endif eorlo r8,r8,r8 @ zero or ... ldrhsb r8,[r12],#16 @ ... load input eorlo r9,r9,r9 ldrhsb r9,[r12,#-12] add r3,r11,r3 -# ifdef __thumb2__ +#ifdef __thumb2__ itete lo -# endif +#endif eorlo r10,r10,r10 ldrhsb r10,[r12,#-8] eorlo r11,r11,r11 @@ -591,53 +571,53 @@ ChaCha20_ctr32: eor r0,r8,r0 @ xor with input (or zero) eor r1,r9,r1 -# ifdef __thumb2__ +#ifdef __thumb2__ itt hs -# endif +#endif ldrhsb r8,[r12,#-15] @ load more input ldrhsb r9,[r12,#-11] eor r2,r10,r2 strb r0,[r14],#16 @ store output eor r3,r11,r3 -# ifdef __thumb2__ +#ifdef __thumb2__ itt hs -# endif +#endif ldrhsb r10,[r12,#-7] ldrhsb r11,[r12,#-3] strb r1,[r14,#-12] eor r0,r8,r0,lsr#8 strb r2,[r14,#-8] eor r1,r9,r1,lsr#8 -# ifdef __thumb2__ +#ifdef __thumb2__ itt hs -# endif +#endif ldrhsb r8,[r12,#-14] @ load more input ldrhsb r9,[r12,#-10] strb r3,[r14,#-4] eor r2,r10,r2,lsr#8 strb r0,[r14,#-15] eor r3,r11,r3,lsr#8 -# ifdef __thumb2__ +#ifdef __thumb2__ itt hs -# endif +#endif ldrhsb r10,[r12,#-6] ldrhsb r11,[r12,#-2] strb r1,[r14,#-11] eor r0,r8,r0,lsr#8 strb r2,[r14,#-7] eor r1,r9,r1,lsr#8 -# ifdef __thumb2__ +#ifdef __thumb2__ itt hs -# endif +#endif ldrhsb r8,[r12,#-13] @ load more input ldrhsb r9,[r12,#-9] strb r3,[r14,#-3] eor r2,r10,r2,lsr#8 strb r0,[r14,#-14] eor r3,r11,r3,lsr#8 -# ifdef __thumb2__ +#ifdef __thumb2__ itt hs -# endif +#endif ldrhsb r10,[r12,#-5] ldrhsb r11,[r12,#-1] strb r1,[r14,#-10] @@ -654,25 +634,25 @@ ChaCha20_ctr32: add r8,sp,#4*(4+8) ldmia r8,{r8-r11} @ load key material add r4,r8,r4,ror#24 @ accumulate key material -# ifdef __thumb2__ +#ifdef __thumb2__ itt hi -# endif +#endif addhi r8,r8,#1 @ next counter value strhi r8,[sp,#4*(12)] @ save next counter value add r5,r9,r5,ror#24 add r6,r10,r6,ror#24 -# ifdef __thumb2__ +#ifdef __thumb2__ itete lo -# endif +#endif eorlo r8,r8,r8 @ zero or ... ldrhsb r8,[r12],#16 @ ... load input eorlo r9,r9,r9 ldrhsb r9,[r12,#-12] add r7,r11,r7,ror#24 -# ifdef __thumb2__ +#ifdef __thumb2__ itete lo -# endif +#endif eorlo r10,r10,r10 ldrhsb r10,[r12,#-8] eorlo r11,r11,r11 @@ -680,53 +660,53 @@ ChaCha20_ctr32: eor r4,r8,r4 @ xor with input (or zero) eor r5,r9,r5 -# ifdef __thumb2__ +#ifdef __thumb2__ itt hs -# endif +#endif ldrhsb r8,[r12,#-15] @ load more input ldrhsb r9,[r12,#-11] eor r6,r10,r6 strb r4,[r14],#16 @ store output eor r7,r11,r7 -# ifdef __thumb2__ +#ifdef __thumb2__ itt hs -# endif +#endif ldrhsb r10,[r12,#-7] ldrhsb r11,[r12,#-3] strb r5,[r14,#-12] eor r4,r8,r4,lsr#8 strb r6,[r14,#-8] eor r5,r9,r5,lsr#8 -# ifdef __thumb2__ +#ifdef __thumb2__ itt hs -# endif +#endif ldrhsb r8,[r12,#-14] @ load more input ldrhsb r9,[r12,#-10] strb r7,[r14,#-4] eor r6,r10,r6,lsr#8 strb r4,[r14,#-15] eor r7,r11,r7,lsr#8 -# ifdef __thumb2__ +#ifdef __thumb2__ itt hs -# endif +#endif ldrhsb r10,[r12,#-6] ldrhsb r11,[r12,#-2] strb r5,[r14,#-11] eor r4,r8,r4,lsr#8 strb r6,[r14,#-7] eor r5,r9,r5,lsr#8 -# ifdef __thumb2__ +#ifdef __thumb2__ itt hs -# endif +#endif ldrhsb r8,[r12,#-13] @ load more input ldrhsb r9,[r12,#-9] strb r7,[r14,#-3] eor r6,r10,r6,lsr#8 strb r4,[r14,#-14] eor r7,r11,r7,lsr#8 -# ifdef __thumb2__ +#ifdef __thumb2__ itt hs -# endif +#endif ldrhsb r10,[r12,#-5] ldrhsb r11,[r12,#-1] strb r5,[r14,#-10] @@ -740,13 +720,13 @@ ChaCha20_ctr32: eor r7,r11,r7,lsr#8 strb r6,[r14,#-5] strb r7,[r14,#-1] -# ifdef __thumb2__ +#ifdef __thumb2__ it ne -# endif +#endif ldrne r8,[sp,#4*(32+2)] @ re-load len -# ifdef __thumb2__ +#ifdef __thumb2__ it hs -# endif +#endif subhs r11,r8,#64 @ len-=64 bhi .Loop_outer @@ -768,20 +748,33 @@ ChaCha20_ctr32: .Ldone: add sp,sp,#4*(32+3) -.Lno_data: +.Lno_data_arm: ldmia sp!,{r4-r11,pc} -.size ChaCha20_ctr32,.-ChaCha20_ctr32 -#if __ARM_MAX_ARCH__>=7 +ENDPROC(chacha20_arm) + +#ifdef CONFIG_KERNEL_MODE_NEON +.align 5 +.Lsigma2: +.long 0x61707865,0x3320646e,0x79622d32,0x6b206574 @ endian-neutral +.Lone2: +.long 1,0,0,0 +.word -1 + .arch armv7-a .fpu neon -.type ChaCha20_neon,%function .align 5 -ChaCha20_neon: +ENTRY(chacha20_neon) ldr r12,[sp,#0] @ pull pointer to counter and nonce stmdb sp!,{r0-r2,r4-r11,lr} -.LChaCha20_neon: - adr r14,.Lsigma + cmp r2,#0 @ len==0? +#ifdef __thumb2__ + itt eq +#endif + addeq sp,sp,#4*3 + beq .Lno_data_neon +.Lchacha20_neon_begin: + adr r14,.Lsigma2 vstmdb sp!,{d8-d15} @ ABI spec says so stmdb sp!,{r0-r3} @@ -1121,12 +1114,12 @@ ChaCha20_neon: ldr r10,[r12,#-8] add r3,r3,r11 ldr r11,[r12,#-4] -# ifdef __ARMEB__ +#ifdef __ARMEB__ rev r0,r0 rev r1,r1 rev r2,r2 rev r3,r3 -# endif +#endif eor r0,r0,r8 @ xor with input add r8,sp,#4*(4) eor r1,r1,r9 @@ -1146,12 +1139,12 @@ ChaCha20_neon: ldr r10,[r12,#-8] add r7,r11,r7,ror#13 ldr r11,[r12,#-4] -# ifdef __ARMEB__ +#ifdef __ARMEB__ rev r4,r4 rev r5,r5 rev r6,r6 rev r7,r7 -# endif +#endif eor r4,r4,r8 add r8,sp,#4*(8) eor r5,r5,r9 @@ -1170,24 +1163,24 @@ ChaCha20_neon: ldr r8,[r12],#16 @ load input add r1,r1,r9 ldr r9,[r12,#-12] -# ifdef __thumb2__ +#ifdef __thumb2__ it hi -# endif +#endif strhi r10,[sp,#4*(16+10)] @ copy "rx" while at it add r2,r2,r10 ldr r10,[r12,#-8] -# ifdef __thumb2__ +#ifdef __thumb2__ it hi -# endif +#endif strhi r11,[sp,#4*(16+11)] @ copy "rx" while at it add r3,r3,r11 ldr r11,[r12,#-4] -# ifdef __ARMEB__ +#ifdef __ARMEB__ rev r0,r0 rev r1,r1 rev r2,r2 rev r3,r3 -# endif +#endif eor r0,r0,r8 add r8,sp,#4*(12) eor r1,r1,r9 @@ -1210,16 +1203,16 @@ ChaCha20_neon: add r7,r11,r7,ror#24 ldr r10,[r12,#-8] ldr r11,[r12,#-4] -# ifdef __ARMEB__ +#ifdef __ARMEB__ rev r4,r4 rev r5,r5 rev r6,r6 rev r7,r7 -# endif +#endif eor r4,r4,r8 -# ifdef __thumb2__ +#ifdef __thumb2__ it hi -# endif +#endif ldrhi r8,[sp,#4*(32+2)] @ re-load len eor r5,r5,r9 eor r6,r6,r10 @@ -1379,7 +1372,7 @@ ChaCha20_neon: add r6,r10,r6,ror#13 add r7,r11,r7,ror#13 ldmia r8,{r8-r11} @ load key material -# ifdef __ARMEB__ +#ifdef __ARMEB__ rev r0,r0 rev r1,r1 rev r2,r2 @@ -1388,7 +1381,7 @@ ChaCha20_neon: rev r5,r5 rev r6,r6 rev r7,r7 -# endif +#endif stmia sp,{r0-r7} add r0,sp,#4*(16+8) @@ -1408,7 +1401,7 @@ ChaCha20_neon: add r6,r10,r6,ror#24 add r7,r11,r7,ror#24 ldr r11,[sp,#4*(32+2)] @ re-load len -# ifdef __ARMEB__ +#ifdef __ARMEB__ rev r0,r0 rev r1,r1 rev r2,r2 @@ -1417,7 +1410,7 @@ ChaCha20_neon: rev r5,r5 rev r6,r6 rev r7,r7 -# endif +#endif stmia r8,{r0-r7} add r10,sp,#4*(0) sub r11,r11,#64*3 @ len-=64*3 @@ -1434,7 +1427,7 @@ ChaCha20_neon: add sp,sp,#4*(32+4) vldmia sp,{d8-d15} add sp,sp,#4*(16+3) +.Lno_data_neon: ldmia sp!,{r4-r11,pc} -.size ChaCha20_neon,.-ChaCha20_neon -.comm OPENSSL_armcap_P,4,4 +ENDPROC(chacha20_neon) #endif diff --git a/lib/zinc/chacha20/chacha20-arm64-cryptogams.S b/lib/zinc/chacha20/chacha20-arm64-cryptogams.S index 4d029bfdad3a..5037510edc6f 100644 --- a/lib/zinc/chacha20/chacha20-arm64-cryptogams.S +++ b/lib/zinc/chacha20/chacha20-arm64-cryptogams.S @@ -1,46 +1,24 @@ /* SPDX-License-Identifier: GPL-2.0 OR BSD-3-Clause */ /* + * Copyright (C) 2015-2018 Jason A. Donenfeld . All Rights Reserved. * Copyright (C) 2006-2017 CRYPTOGAMS by . All Rights Reserved. + * + * This is based in part on Andy Polyakov's implementation from CRYPTOGAMS. */ -#include "arm_arch.h" +#include .text - - - .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 -.byte 67,104,97,67,104,97,50,48,32,102,111,114,32,65,82,77,118,56,44,32,67,82,89,80,84,79,71,65,77,83,32,98,121,32,60,97,112,112,114,111,64,111,112,101,110,115,115,108,46,111,114,103,62,0 -.align 2 -.globl ChaCha20_ctr32 -.type ChaCha20_ctr32,%function .align 5 -ChaCha20_ctr32: +ENTRY(chacha20_arm) cbz x2,.Labort - adr x5,.LOPENSSL_armcap_P - cmp x2,#192 - b.lo .Lshort -#ifdef __ILP32__ - ldrsw x6,[x5] -#else - ldr x6,[x5] -#endif - ldr w17,[x6,x5] - tst w17,#ARMV7_NEON - b.ne ChaCha20_neon -.Lshort: stp x29,x30,[sp,#-96]! add x29,sp,#0 @@ -309,11 +287,13 @@ ChaCha20_ctr32: ldp x27,x28,[x29,#80] ldp x29,x30,[sp],#96 ret -.size ChaCha20_ctr32,.-ChaCha20_ctr32 +ENDPROC(chacha20_arm) -.type ChaCha20_neon,%function +#ifdef CONFIG_KERNEL_MODE_NEON .align 5 -ChaCha20_neon: +ENTRY(chacha20_neon) + cbz x2,.Labort_neon + stp x29,x30,[sp,#-96]! add x29,sp,#0 @@ -803,19 +783,6 @@ ChaCha20_neon: ldp x27,x28,[x29,#80] ldp x29,x30,[sp],#96 ret -.size ChaCha20_neon,.-ChaCha20_neon -.type ChaCha20_512_neon,%function -.align 5 -ChaCha20_512_neon: - stp x29,x30,[sp,#-96]! - add x29,sp,#0 - - adr x5,.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 @@ -1969,5 +1936,7 @@ ChaCha20_512_neon: ldp x25,x26,[x29,#64] ldp x27,x28,[x29,#80] ldp x29,x30,[sp],#96 +.Labort_neon: ret -.size ChaCha20_512_neon,.-ChaCha20_512_neon +ENDPROC(chacha20_neon) +#endif -- 2.19.0