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1494 lines
29 KiB
ArmAsm
1494 lines
29 KiB
ArmAsm
// This file is generated from a similarly-named Perl script in the BoringSSL
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// source tree. Do not edit by hand.
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#if !defined(__has_feature)
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#define __has_feature(x) 0
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#endif
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#if __has_feature(memory_sanitizer) && !defined(OPENSSL_NO_ASM)
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#define OPENSSL_NO_ASM
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#endif
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#if !defined(OPENSSL_NO_ASM)
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#if defined(__arm__)
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#if defined(BORINGSSL_PREFIX)
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#include <boringssl_prefix_symbols_asm.h>
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#endif
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#include <openssl/arm_arch.h>
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@ Silence ARMv8 deprecated IT instruction warnings. This file is used by both
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@ ARMv7 and ARMv8 processors and does not use ARMv8 instructions.
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.arch armv7-a
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.text
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#if defined(__thumb2__) || defined(__clang__)
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.syntax unified
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#endif
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#if defined(__thumb2__)
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.thumb
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#else
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.code 32
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#endif
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#if defined(__thumb2__) || defined(__clang__)
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#define ldrhsb ldrbhs
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#endif
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.align 5
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.Lsigma:
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.long 0x61707865,0x3320646e,0x79622d32,0x6b206574 @ endian-neutral
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.Lone:
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.long 1,0,0,0
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#if __ARM_MAX_ARCH__>=7
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.LOPENSSL_armcap:
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.word OPENSSL_armcap_P-.LChaCha20_ctr32
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#else
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.word -1
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#endif
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.globl ChaCha20_ctr32
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.hidden ChaCha20_ctr32
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.type ChaCha20_ctr32,%function
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.align 5
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ChaCha20_ctr32:
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.LChaCha20_ctr32:
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ldr r12,[sp,#0] @ pull pointer to counter and nonce
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stmdb sp!,{r0,r1,r2,r4-r11,lr}
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#if __ARM_ARCH__<7 && !defined(__thumb2__)
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sub r14,pc,#16 @ ChaCha20_ctr32
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#else
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adr r14,.LChaCha20_ctr32
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#endif
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cmp r2,#0 @ len==0?
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#ifdef __thumb2__
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itt eq
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#endif
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addeq sp,sp,#4*3
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beq .Lno_data
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#if __ARM_MAX_ARCH__>=7
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cmp r2,#192 @ test len
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bls .Lshort
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ldr r4,[r14,#-32]
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ldr r4,[r14,r4]
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# ifdef __APPLE__
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ldr r4,[r4]
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# endif
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tst r4,#ARMV7_NEON
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bne .LChaCha20_neon
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.Lshort:
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#endif
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ldmia r12,{r4,r5,r6,r7} @ load counter and nonce
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sub sp,sp,#4*(16) @ off-load area
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sub r14,r14,#64 @ .Lsigma
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stmdb sp!,{r4,r5,r6,r7} @ copy counter and nonce
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ldmia r3,{r4,r5,r6,r7,r8,r9,r10,r11} @ load key
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ldmia r14,{r0,r1,r2,r3} @ load sigma
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stmdb sp!,{r4,r5,r6,r7,r8,r9,r10,r11} @ copy key
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stmdb sp!,{r0,r1,r2,r3} @ copy sigma
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str r10,[sp,#4*(16+10)] @ off-load "rx"
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str r11,[sp,#4*(16+11)] @ off-load "rx"
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b .Loop_outer_enter
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.align 4
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.Loop_outer:
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ldmia sp,{r0,r1,r2,r3,r4,r5,r6,r7,r8,r9} @ load key material
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str r11,[sp,#4*(32+2)] @ save len
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str r12, [sp,#4*(32+1)] @ save inp
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str r14, [sp,#4*(32+0)] @ save out
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.Loop_outer_enter:
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ldr r11, [sp,#4*(15)]
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ldr r12,[sp,#4*(12)] @ modulo-scheduled load
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ldr r10, [sp,#4*(13)]
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ldr r14,[sp,#4*(14)]
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str r11, [sp,#4*(16+15)]
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mov r11,#10
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b .Loop
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.align 4
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.Loop:
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subs r11,r11,#1
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add r0,r0,r4
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mov r12,r12,ror#16
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add r1,r1,r5
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mov r10,r10,ror#16
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eor r12,r12,r0,ror#16
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eor r10,r10,r1,ror#16
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add r8,r8,r12
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mov r4,r4,ror#20
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add r9,r9,r10
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mov r5,r5,ror#20
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eor r4,r4,r8,ror#20
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eor r5,r5,r9,ror#20
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add r0,r0,r4
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mov r12,r12,ror#24
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add r1,r1,r5
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mov r10,r10,ror#24
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eor r12,r12,r0,ror#24
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eor r10,r10,r1,ror#24
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add r8,r8,r12
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mov r4,r4,ror#25
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add r9,r9,r10
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mov r5,r5,ror#25
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str r10,[sp,#4*(16+13)]
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ldr r10,[sp,#4*(16+15)]
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eor r4,r4,r8,ror#25
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eor r5,r5,r9,ror#25
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str r8,[sp,#4*(16+8)]
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ldr r8,[sp,#4*(16+10)]
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add r2,r2,r6
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mov r14,r14,ror#16
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str r9,[sp,#4*(16+9)]
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ldr r9,[sp,#4*(16+11)]
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add r3,r3,r7
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mov r10,r10,ror#16
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eor r14,r14,r2,ror#16
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eor r10,r10,r3,ror#16
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add r8,r8,r14
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mov r6,r6,ror#20
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add r9,r9,r10
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mov r7,r7,ror#20
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eor r6,r6,r8,ror#20
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eor r7,r7,r9,ror#20
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add r2,r2,r6
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mov r14,r14,ror#24
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add r3,r3,r7
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mov r10,r10,ror#24
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eor r14,r14,r2,ror#24
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eor r10,r10,r3,ror#24
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add r8,r8,r14
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mov r6,r6,ror#25
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add r9,r9,r10
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mov r7,r7,ror#25
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eor r6,r6,r8,ror#25
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eor r7,r7,r9,ror#25
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add r0,r0,r5
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mov r10,r10,ror#16
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add r1,r1,r6
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mov r12,r12,ror#16
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eor r10,r10,r0,ror#16
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eor r12,r12,r1,ror#16
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add r8,r8,r10
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mov r5,r5,ror#20
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add r9,r9,r12
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mov r6,r6,ror#20
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eor r5,r5,r8,ror#20
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eor r6,r6,r9,ror#20
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add r0,r0,r5
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mov r10,r10,ror#24
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add r1,r1,r6
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mov r12,r12,ror#24
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eor r10,r10,r0,ror#24
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eor r12,r12,r1,ror#24
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add r8,r8,r10
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mov r5,r5,ror#25
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str r10,[sp,#4*(16+15)]
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ldr r10,[sp,#4*(16+13)]
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add r9,r9,r12
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mov r6,r6,ror#25
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eor r5,r5,r8,ror#25
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eor r6,r6,r9,ror#25
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str r8,[sp,#4*(16+10)]
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ldr r8,[sp,#4*(16+8)]
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add r2,r2,r7
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mov r10,r10,ror#16
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str r9,[sp,#4*(16+11)]
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ldr r9,[sp,#4*(16+9)]
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add r3,r3,r4
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mov r14,r14,ror#16
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eor r10,r10,r2,ror#16
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eor r14,r14,r3,ror#16
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add r8,r8,r10
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mov r7,r7,ror#20
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add r9,r9,r14
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mov r4,r4,ror#20
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eor r7,r7,r8,ror#20
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eor r4,r4,r9,ror#20
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add r2,r2,r7
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mov r10,r10,ror#24
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add r3,r3,r4
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mov r14,r14,ror#24
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eor r10,r10,r2,ror#24
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eor r14,r14,r3,ror#24
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add r8,r8,r10
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mov r7,r7,ror#25
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add r9,r9,r14
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mov r4,r4,ror#25
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eor r7,r7,r8,ror#25
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eor r4,r4,r9,ror#25
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bne .Loop
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ldr r11,[sp,#4*(32+2)] @ load len
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str r8, [sp,#4*(16+8)] @ modulo-scheduled store
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str r9, [sp,#4*(16+9)]
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str r12,[sp,#4*(16+12)]
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str r10, [sp,#4*(16+13)]
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str r14,[sp,#4*(16+14)]
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@ at this point we have first half of 512-bit result in
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@ rx and second half at sp+4*(16+8)
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cmp r11,#64 @ done yet?
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#ifdef __thumb2__
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itete lo
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#endif
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addlo r12,sp,#4*(0) @ shortcut or ...
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ldrhs r12,[sp,#4*(32+1)] @ ... load inp
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addlo r14,sp,#4*(0) @ shortcut or ...
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ldrhs r14,[sp,#4*(32+0)] @ ... load out
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ldr r8,[sp,#4*(0)] @ load key material
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ldr r9,[sp,#4*(1)]
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#if __ARM_ARCH__>=6 || !defined(__ARMEB__)
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# if __ARM_ARCH__<7
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orr r10,r12,r14
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tst r10,#3 @ are input and output aligned?
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ldr r10,[sp,#4*(2)]
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bne .Lunaligned
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cmp r11,#64 @ restore flags
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# else
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ldr r10,[sp,#4*(2)]
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# endif
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ldr r11,[sp,#4*(3)]
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add r0,r0,r8 @ accumulate key material
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add r1,r1,r9
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# ifdef __thumb2__
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itt hs
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# endif
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ldrhs r8,[r12],#16 @ load input
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ldrhs r9,[r12,#-12]
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add r2,r2,r10
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add r3,r3,r11
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# ifdef __thumb2__
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itt hs
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# endif
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ldrhs r10,[r12,#-8]
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ldrhs r11,[r12,#-4]
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# if __ARM_ARCH__>=6 && defined(__ARMEB__)
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rev r0,r0
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rev r1,r1
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rev r2,r2
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rev r3,r3
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# endif
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# ifdef __thumb2__
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itt hs
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# endif
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eorhs r0,r0,r8 @ xor with input
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eorhs r1,r1,r9
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add r8,sp,#4*(4)
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str r0,[r14],#16 @ store output
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# ifdef __thumb2__
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itt hs
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# endif
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eorhs r2,r2,r10
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eorhs r3,r3,r11
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ldmia r8,{r8,r9,r10,r11} @ load key material
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str r1,[r14,#-12]
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str r2,[r14,#-8]
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str r3,[r14,#-4]
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add r4,r4,r8 @ accumulate key material
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add r5,r5,r9
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# ifdef __thumb2__
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itt hs
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# endif
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ldrhs r8,[r12],#16 @ load input
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ldrhs r9,[r12,#-12]
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add r6,r6,r10
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add r7,r7,r11
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# ifdef __thumb2__
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itt hs
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# endif
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ldrhs r10,[r12,#-8]
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ldrhs r11,[r12,#-4]
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# if __ARM_ARCH__>=6 && defined(__ARMEB__)
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rev r4,r4
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rev r5,r5
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rev r6,r6
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rev r7,r7
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# endif
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# ifdef __thumb2__
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itt hs
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# endif
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eorhs r4,r4,r8
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eorhs r5,r5,r9
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add r8,sp,#4*(8)
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str r4,[r14],#16 @ store output
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# ifdef __thumb2__
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itt hs
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# endif
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eorhs r6,r6,r10
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eorhs r7,r7,r11
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str r5,[r14,#-12]
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ldmia r8,{r8,r9,r10,r11} @ load key material
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str r6,[r14,#-8]
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add r0,sp,#4*(16+8)
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str r7,[r14,#-4]
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ldmia r0,{r0,r1,r2,r3,r4,r5,r6,r7} @ load second half
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add r0,r0,r8 @ accumulate key material
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add r1,r1,r9
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# ifdef __thumb2__
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itt hs
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# endif
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ldrhs r8,[r12],#16 @ load input
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ldrhs r9,[r12,#-12]
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# ifdef __thumb2__
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itt hi
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# endif
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strhi r10,[sp,#4*(16+10)] @ copy "rx" while at it
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strhi r11,[sp,#4*(16+11)] @ copy "rx" while at it
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add r2,r2,r10
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add r3,r3,r11
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# ifdef __thumb2__
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itt hs
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# endif
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ldrhs r10,[r12,#-8]
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ldrhs r11,[r12,#-4]
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# if __ARM_ARCH__>=6 && defined(__ARMEB__)
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rev r0,r0
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rev r1,r1
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rev r2,r2
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rev r3,r3
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# endif
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# ifdef __thumb2__
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itt hs
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# endif
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eorhs r0,r0,r8
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eorhs r1,r1,r9
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add r8,sp,#4*(12)
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str r0,[r14],#16 @ store output
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# ifdef __thumb2__
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itt hs
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# endif
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eorhs r2,r2,r10
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eorhs r3,r3,r11
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str r1,[r14,#-12]
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ldmia r8,{r8,r9,r10,r11} @ load key material
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str r2,[r14,#-8]
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str r3,[r14,#-4]
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add r4,r4,r8 @ accumulate key material
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add r5,r5,r9
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# ifdef __thumb2__
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itt hi
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# endif
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addhi r8,r8,#1 @ next counter value
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strhi r8,[sp,#4*(12)] @ save next counter value
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# ifdef __thumb2__
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itt hs
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# endif
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ldrhs r8,[r12],#16 @ load input
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ldrhs r9,[r12,#-12]
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add r6,r6,r10
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add r7,r7,r11
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# ifdef __thumb2__
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itt hs
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# endif
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ldrhs r10,[r12,#-8]
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ldrhs r11,[r12,#-4]
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# if __ARM_ARCH__>=6 && defined(__ARMEB__)
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rev r4,r4
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rev r5,r5
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rev r6,r6
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rev r7,r7
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# endif
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# ifdef __thumb2__
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itt hs
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# endif
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eorhs r4,r4,r8
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eorhs r5,r5,r9
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# ifdef __thumb2__
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it ne
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# endif
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ldrne r8,[sp,#4*(32+2)] @ re-load len
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# ifdef __thumb2__
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itt hs
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# endif
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eorhs r6,r6,r10
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eorhs r7,r7,r11
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str r4,[r14],#16 @ store output
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str r5,[r14,#-12]
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# ifdef __thumb2__
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it hs
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# endif
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subhs r11,r8,#64 @ len-=64
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str r6,[r14,#-8]
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str r7,[r14,#-4]
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bhi .Loop_outer
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beq .Ldone
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# if __ARM_ARCH__<7
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b .Ltail
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.align 4
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.Lunaligned:@ unaligned endian-neutral path
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cmp r11,#64 @ restore flags
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# endif
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#endif
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#if __ARM_ARCH__<7
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ldr r11,[sp,#4*(3)]
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add r0,r0,r8 @ accumulate key material
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add r1,r1,r9
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add r2,r2,r10
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# ifdef __thumb2__
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itete lo
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# endif
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eorlo r8,r8,r8 @ zero or ...
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ldrhsb r8,[r12],#16 @ ... load input
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eorlo r9,r9,r9
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ldrhsb r9,[r12,#-12]
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add r3,r3,r11
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# ifdef __thumb2__
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itete lo
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# endif
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eorlo r10,r10,r10
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ldrhsb r10,[r12,#-8]
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eorlo r11,r11,r11
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ldrhsb r11,[r12,#-4]
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eor r0,r8,r0 @ xor with input (or zero)
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eor r1,r9,r1
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# ifdef __thumb2__
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itt hs
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# endif
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ldrhsb r8,[r12,#-15] @ load more input
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ldrhsb r9,[r12,#-11]
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eor r2,r10,r2
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strb r0,[r14],#16 @ store output
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eor r3,r11,r3
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# ifdef __thumb2__
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itt hs
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# endif
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ldrhsb r10,[r12,#-7]
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ldrhsb r11,[r12,#-3]
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strb r1,[r14,#-12]
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eor r0,r8,r0,lsr#8
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strb r2,[r14,#-8]
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eor r1,r9,r1,lsr#8
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# ifdef __thumb2__
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itt hs
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# endif
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ldrhsb r8,[r12,#-14] @ load more input
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ldrhsb r9,[r12,#-10]
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strb r3,[r14,#-4]
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eor r2,r10,r2,lsr#8
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strb r0,[r14,#-15]
|
|
eor r3,r11,r3,lsr#8
|
|
# ifdef __thumb2__
|
|
itt hs
|
|
# 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__
|
|
itt hs
|
|
# 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__
|
|
itt hs
|
|
# endif
|
|
ldrhsb r10,[r12,#-5]
|
|
ldrhsb r11,[r12,#-1]
|
|
strb r1,[r14,#-10]
|
|
strb r2,[r14,#-6]
|
|
eor r0,r8,r0,lsr#8
|
|
strb r3,[r14,#-2]
|
|
eor r1,r9,r1,lsr#8
|
|
strb r0,[r14,#-13]
|
|
eor r2,r10,r2,lsr#8
|
|
strb r1,[r14,#-9]
|
|
eor r3,r11,r3,lsr#8
|
|
strb r2,[r14,#-5]
|
|
strb r3,[r14,#-1]
|
|
add r8,sp,#4*(4+0)
|
|
ldmia r8,{r8,r9,r10,r11} @ load key material
|
|
add r0,sp,#4*(16+8)
|
|
add r4,r4,r8 @ accumulate key material
|
|
add r5,r5,r9
|
|
add r6,r6,r10
|
|
# ifdef __thumb2__
|
|
itete lo
|
|
# endif
|
|
eorlo r8,r8,r8 @ zero or ...
|
|
ldrhsb r8,[r12],#16 @ ... load input
|
|
eorlo r9,r9,r9
|
|
ldrhsb r9,[r12,#-12]
|
|
|
|
add r7,r7,r11
|
|
# ifdef __thumb2__
|
|
itete lo
|
|
# endif
|
|
eorlo r10,r10,r10
|
|
ldrhsb r10,[r12,#-8]
|
|
eorlo r11,r11,r11
|
|
ldrhsb r11,[r12,#-4]
|
|
|
|
eor r4,r8,r4 @ xor with input (or zero)
|
|
eor r5,r9,r5
|
|
# ifdef __thumb2__
|
|
itt hs
|
|
# 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__
|
|
itt hs
|
|
# 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__
|
|
itt hs
|
|
# 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__
|
|
itt hs
|
|
# 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__
|
|
itt hs
|
|
# 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__
|
|
itt hs
|
|
# endif
|
|
ldrhsb r10,[r12,#-5]
|
|
ldrhsb r11,[r12,#-1]
|
|
strb r5,[r14,#-10]
|
|
strb r6,[r14,#-6]
|
|
eor r4,r8,r4,lsr#8
|
|
strb r7,[r14,#-2]
|
|
eor r5,r9,r5,lsr#8
|
|
strb r4,[r14,#-13]
|
|
eor r6,r10,r6,lsr#8
|
|
strb r5,[r14,#-9]
|
|
eor r7,r11,r7,lsr#8
|
|
strb r6,[r14,#-5]
|
|
strb r7,[r14,#-1]
|
|
add r8,sp,#4*(4+4)
|
|
ldmia r8,{r8,r9,r10,r11} @ load key material
|
|
ldmia r0,{r0,r1,r2,r3,r4,r5,r6,r7} @ load second half
|
|
# ifdef __thumb2__
|
|
itt hi
|
|
# endif
|
|
strhi r10,[sp,#4*(16+10)] @ copy "rx"
|
|
strhi r11,[sp,#4*(16+11)] @ copy "rx"
|
|
add r0,r0,r8 @ accumulate key material
|
|
add r1,r1,r9
|
|
add r2,r2,r10
|
|
# ifdef __thumb2__
|
|
itete lo
|
|
# endif
|
|
eorlo r8,r8,r8 @ zero or ...
|
|
ldrhsb r8,[r12],#16 @ ... load input
|
|
eorlo r9,r9,r9
|
|
ldrhsb r9,[r12,#-12]
|
|
|
|
add r3,r3,r11
|
|
# ifdef __thumb2__
|
|
itete lo
|
|
# endif
|
|
eorlo r10,r10,r10
|
|
ldrhsb r10,[r12,#-8]
|
|
eorlo r11,r11,r11
|
|
ldrhsb r11,[r12,#-4]
|
|
|
|
eor r0,r8,r0 @ xor with input (or zero)
|
|
eor r1,r9,r1
|
|
# ifdef __thumb2__
|
|
itt hs
|
|
# 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__
|
|
itt hs
|
|
# 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__
|
|
itt hs
|
|
# 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__
|
|
itt hs
|
|
# 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__
|
|
itt hs
|
|
# 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__
|
|
itt hs
|
|
# endif
|
|
ldrhsb r10,[r12,#-5]
|
|
ldrhsb r11,[r12,#-1]
|
|
strb r1,[r14,#-10]
|
|
strb r2,[r14,#-6]
|
|
eor r0,r8,r0,lsr#8
|
|
strb r3,[r14,#-2]
|
|
eor r1,r9,r1,lsr#8
|
|
strb r0,[r14,#-13]
|
|
eor r2,r10,r2,lsr#8
|
|
strb r1,[r14,#-9]
|
|
eor r3,r11,r3,lsr#8
|
|
strb r2,[r14,#-5]
|
|
strb r3,[r14,#-1]
|
|
add r8,sp,#4*(4+8)
|
|
ldmia r8,{r8,r9,r10,r11} @ load key material
|
|
add r4,r4,r8 @ accumulate key material
|
|
# ifdef __thumb2__
|
|
itt hi
|
|
# endif
|
|
addhi r8,r8,#1 @ next counter value
|
|
strhi r8,[sp,#4*(12)] @ save next counter value
|
|
add r5,r5,r9
|
|
add r6,r6,r10
|
|
# ifdef __thumb2__
|
|
itete lo
|
|
# endif
|
|
eorlo r8,r8,r8 @ zero or ...
|
|
ldrhsb r8,[r12],#16 @ ... load input
|
|
eorlo r9,r9,r9
|
|
ldrhsb r9,[r12,#-12]
|
|
|
|
add r7,r7,r11
|
|
# ifdef __thumb2__
|
|
itete lo
|
|
# endif
|
|
eorlo r10,r10,r10
|
|
ldrhsb r10,[r12,#-8]
|
|
eorlo r11,r11,r11
|
|
ldrhsb r11,[r12,#-4]
|
|
|
|
eor r4,r8,r4 @ xor with input (or zero)
|
|
eor r5,r9,r5
|
|
# ifdef __thumb2__
|
|
itt hs
|
|
# 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__
|
|
itt hs
|
|
# 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__
|
|
itt hs
|
|
# 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__
|
|
itt hs
|
|
# 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__
|
|
itt hs
|
|
# 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__
|
|
itt hs
|
|
# endif
|
|
ldrhsb r10,[r12,#-5]
|
|
ldrhsb r11,[r12,#-1]
|
|
strb r5,[r14,#-10]
|
|
strb r6,[r14,#-6]
|
|
eor r4,r8,r4,lsr#8
|
|
strb r7,[r14,#-2]
|
|
eor r5,r9,r5,lsr#8
|
|
strb r4,[r14,#-13]
|
|
eor r6,r10,r6,lsr#8
|
|
strb r5,[r14,#-9]
|
|
eor r7,r11,r7,lsr#8
|
|
strb r6,[r14,#-5]
|
|
strb r7,[r14,#-1]
|
|
# ifdef __thumb2__
|
|
it ne
|
|
# endif
|
|
ldrne r8,[sp,#4*(32+2)] @ re-load len
|
|
# ifdef __thumb2__
|
|
it hs
|
|
# endif
|
|
subhs r11,r8,#64 @ len-=64
|
|
bhi .Loop_outer
|
|
|
|
beq .Ldone
|
|
#endif
|
|
|
|
.Ltail:
|
|
ldr r12,[sp,#4*(32+1)] @ load inp
|
|
add r9,sp,#4*(0)
|
|
ldr r14,[sp,#4*(32+0)] @ load out
|
|
|
|
.Loop_tail:
|
|
ldrb r10,[r9],#1 @ read buffer on stack
|
|
ldrb r11,[r12],#1 @ read input
|
|
subs r8,r8,#1
|
|
eor r11,r11,r10
|
|
strb r11,[r14],#1 @ store output
|
|
bne .Loop_tail
|
|
|
|
.Ldone:
|
|
add sp,sp,#4*(32+3)
|
|
.Lno_data:
|
|
ldmia sp!,{r4,r5,r6,r7,r8,r9,r10,r11,pc}
|
|
.size ChaCha20_ctr32,.-ChaCha20_ctr32
|
|
#if __ARM_MAX_ARCH__>=7
|
|
.arch armv7-a
|
|
.fpu neon
|
|
|
|
.type ChaCha20_neon,%function
|
|
.align 5
|
|
ChaCha20_neon:
|
|
ldr r12,[sp,#0] @ pull pointer to counter and nonce
|
|
stmdb sp!,{r0,r1,r2,r4-r11,lr}
|
|
.LChaCha20_neon:
|
|
adr r14,.Lsigma
|
|
vstmdb sp!,{d8,d9,d10,d11,d12,d13,d14,d15} @ ABI spec says so
|
|
stmdb sp!,{r0,r1,r2,r3}
|
|
|
|
vld1.32 {q1,q2},[r3] @ load key
|
|
ldmia r3,{r4,r5,r6,r7,r8,r9,r10,r11} @ load key
|
|
|
|
sub sp,sp,#4*(16+16)
|
|
vld1.32 {q3},[r12] @ load counter and nonce
|
|
add r12,sp,#4*8
|
|
ldmia r14,{r0,r1,r2,r3} @ load sigma
|
|
vld1.32 {q0},[r14]! @ load sigma
|
|
vld1.32 {q12},[r14] @ one
|
|
vst1.32 {q2,q3},[r12] @ copy 1/2key|counter|nonce
|
|
vst1.32 {q0,q1},[sp] @ copy sigma|1/2key
|
|
|
|
str r10,[sp,#4*(16+10)] @ off-load "rx"
|
|
str r11,[sp,#4*(16+11)] @ off-load "rx"
|
|
vshl.i32 d26,d24,#1 @ two
|
|
vstr d24,[sp,#4*(16+0)]
|
|
vshl.i32 d28,d24,#2 @ four
|
|
vstr d26,[sp,#4*(16+2)]
|
|
vmov q4,q0
|
|
vstr d28,[sp,#4*(16+4)]
|
|
vmov q8,q0
|
|
vmov q5,q1
|
|
vmov q9,q1
|
|
b .Loop_neon_enter
|
|
|
|
.align 4
|
|
.Loop_neon_outer:
|
|
ldmia sp,{r0,r1,r2,r3,r4,r5,r6,r7,r8,r9} @ load key material
|
|
cmp r11,#64*2 @ if len<=64*2
|
|
bls .Lbreak_neon @ switch to integer-only
|
|
vmov q4,q0
|
|
str r11,[sp,#4*(32+2)] @ save len
|
|
vmov q8,q0
|
|
str r12, [sp,#4*(32+1)] @ save inp
|
|
vmov q5,q1
|
|
str r14, [sp,#4*(32+0)] @ save out
|
|
vmov q9,q1
|
|
.Loop_neon_enter:
|
|
ldr r11, [sp,#4*(15)]
|
|
vadd.i32 q7,q3,q12 @ counter+1
|
|
ldr r12,[sp,#4*(12)] @ modulo-scheduled load
|
|
vmov q6,q2
|
|
ldr r10, [sp,#4*(13)]
|
|
vmov q10,q2
|
|
ldr r14,[sp,#4*(14)]
|
|
vadd.i32 q11,q7,q12 @ counter+2
|
|
str r11, [sp,#4*(16+15)]
|
|
mov r11,#10
|
|
add r12,r12,#3 @ counter+3
|
|
b .Loop_neon
|
|
|
|
.align 4
|
|
.Loop_neon:
|
|
subs r11,r11,#1
|
|
vadd.i32 q0,q0,q1
|
|
add r0,r0,r4
|
|
vadd.i32 q4,q4,q5
|
|
mov r12,r12,ror#16
|
|
vadd.i32 q8,q8,q9
|
|
add r1,r1,r5
|
|
veor q3,q3,q0
|
|
mov r10,r10,ror#16
|
|
veor q7,q7,q4
|
|
eor r12,r12,r0,ror#16
|
|
veor q11,q11,q8
|
|
eor r10,r10,r1,ror#16
|
|
vrev32.16 q3,q3
|
|
add r8,r8,r12
|
|
vrev32.16 q7,q7
|
|
mov r4,r4,ror#20
|
|
vrev32.16 q11,q11
|
|
add r9,r9,r10
|
|
vadd.i32 q2,q2,q3
|
|
mov r5,r5,ror#20
|
|
vadd.i32 q6,q6,q7
|
|
eor r4,r4,r8,ror#20
|
|
vadd.i32 q10,q10,q11
|
|
eor r5,r5,r9,ror#20
|
|
veor q12,q1,q2
|
|
add r0,r0,r4
|
|
veor q13,q5,q6
|
|
mov r12,r12,ror#24
|
|
veor q14,q9,q10
|
|
add r1,r1,r5
|
|
vshr.u32 q1,q12,#20
|
|
mov r10,r10,ror#24
|
|
vshr.u32 q5,q13,#20
|
|
eor r12,r12,r0,ror#24
|
|
vshr.u32 q9,q14,#20
|
|
eor r10,r10,r1,ror#24
|
|
vsli.32 q1,q12,#12
|
|
add r8,r8,r12
|
|
vsli.32 q5,q13,#12
|
|
mov r4,r4,ror#25
|
|
vsli.32 q9,q14,#12
|
|
add r9,r9,r10
|
|
vadd.i32 q0,q0,q1
|
|
mov r5,r5,ror#25
|
|
vadd.i32 q4,q4,q5
|
|
str r10,[sp,#4*(16+13)]
|
|
vadd.i32 q8,q8,q9
|
|
ldr r10,[sp,#4*(16+15)]
|
|
veor q12,q3,q0
|
|
eor r4,r4,r8,ror#25
|
|
veor q13,q7,q4
|
|
eor r5,r5,r9,ror#25
|
|
veor q14,q11,q8
|
|
str r8,[sp,#4*(16+8)]
|
|
vshr.u32 q3,q12,#24
|
|
ldr r8,[sp,#4*(16+10)]
|
|
vshr.u32 q7,q13,#24
|
|
add r2,r2,r6
|
|
vshr.u32 q11,q14,#24
|
|
mov r14,r14,ror#16
|
|
vsli.32 q3,q12,#8
|
|
str r9,[sp,#4*(16+9)]
|
|
vsli.32 q7,q13,#8
|
|
ldr r9,[sp,#4*(16+11)]
|
|
vsli.32 q11,q14,#8
|
|
add r3,r3,r7
|
|
vadd.i32 q2,q2,q3
|
|
mov r10,r10,ror#16
|
|
vadd.i32 q6,q6,q7
|
|
eor r14,r14,r2,ror#16
|
|
vadd.i32 q10,q10,q11
|
|
eor r10,r10,r3,ror#16
|
|
veor q12,q1,q2
|
|
add r8,r8,r14
|
|
veor q13,q5,q6
|
|
mov r6,r6,ror#20
|
|
veor q14,q9,q10
|
|
add r9,r9,r10
|
|
vshr.u32 q1,q12,#25
|
|
mov r7,r7,ror#20
|
|
vshr.u32 q5,q13,#25
|
|
eor r6,r6,r8,ror#20
|
|
vshr.u32 q9,q14,#25
|
|
eor r7,r7,r9,ror#20
|
|
vsli.32 q1,q12,#7
|
|
add r2,r2,r6
|
|
vsli.32 q5,q13,#7
|
|
mov r14,r14,ror#24
|
|
vsli.32 q9,q14,#7
|
|
add r3,r3,r7
|
|
vext.8 q2,q2,q2,#8
|
|
mov r10,r10,ror#24
|
|
vext.8 q6,q6,q6,#8
|
|
eor r14,r14,r2,ror#24
|
|
vext.8 q10,q10,q10,#8
|
|
eor r10,r10,r3,ror#24
|
|
vext.8 q1,q1,q1,#4
|
|
add r8,r8,r14
|
|
vext.8 q5,q5,q5,#4
|
|
mov r6,r6,ror#25
|
|
vext.8 q9,q9,q9,#4
|
|
add r9,r9,r10
|
|
vext.8 q3,q3,q3,#12
|
|
mov r7,r7,ror#25
|
|
vext.8 q7,q7,q7,#12
|
|
eor r6,r6,r8,ror#25
|
|
vext.8 q11,q11,q11,#12
|
|
eor r7,r7,r9,ror#25
|
|
vadd.i32 q0,q0,q1
|
|
add r0,r0,r5
|
|
vadd.i32 q4,q4,q5
|
|
mov r10,r10,ror#16
|
|
vadd.i32 q8,q8,q9
|
|
add r1,r1,r6
|
|
veor q3,q3,q0
|
|
mov r12,r12,ror#16
|
|
veor q7,q7,q4
|
|
eor r10,r10,r0,ror#16
|
|
veor q11,q11,q8
|
|
eor r12,r12,r1,ror#16
|
|
vrev32.16 q3,q3
|
|
add r8,r8,r10
|
|
vrev32.16 q7,q7
|
|
mov r5,r5,ror#20
|
|
vrev32.16 q11,q11
|
|
add r9,r9,r12
|
|
vadd.i32 q2,q2,q3
|
|
mov r6,r6,ror#20
|
|
vadd.i32 q6,q6,q7
|
|
eor r5,r5,r8,ror#20
|
|
vadd.i32 q10,q10,q11
|
|
eor r6,r6,r9,ror#20
|
|
veor q12,q1,q2
|
|
add r0,r0,r5
|
|
veor q13,q5,q6
|
|
mov r10,r10,ror#24
|
|
veor q14,q9,q10
|
|
add r1,r1,r6
|
|
vshr.u32 q1,q12,#20
|
|
mov r12,r12,ror#24
|
|
vshr.u32 q5,q13,#20
|
|
eor r10,r10,r0,ror#24
|
|
vshr.u32 q9,q14,#20
|
|
eor r12,r12,r1,ror#24
|
|
vsli.32 q1,q12,#12
|
|
add r8,r8,r10
|
|
vsli.32 q5,q13,#12
|
|
mov r5,r5,ror#25
|
|
vsli.32 q9,q14,#12
|
|
str r10,[sp,#4*(16+15)]
|
|
vadd.i32 q0,q0,q1
|
|
ldr r10,[sp,#4*(16+13)]
|
|
vadd.i32 q4,q4,q5
|
|
add r9,r9,r12
|
|
vadd.i32 q8,q8,q9
|
|
mov r6,r6,ror#25
|
|
veor q12,q3,q0
|
|
eor r5,r5,r8,ror#25
|
|
veor q13,q7,q4
|
|
eor r6,r6,r9,ror#25
|
|
veor q14,q11,q8
|
|
str r8,[sp,#4*(16+10)]
|
|
vshr.u32 q3,q12,#24
|
|
ldr r8,[sp,#4*(16+8)]
|
|
vshr.u32 q7,q13,#24
|
|
add r2,r2,r7
|
|
vshr.u32 q11,q14,#24
|
|
mov r10,r10,ror#16
|
|
vsli.32 q3,q12,#8
|
|
str r9,[sp,#4*(16+11)]
|
|
vsli.32 q7,q13,#8
|
|
ldr r9,[sp,#4*(16+9)]
|
|
vsli.32 q11,q14,#8
|
|
add r3,r3,r4
|
|
vadd.i32 q2,q2,q3
|
|
mov r14,r14,ror#16
|
|
vadd.i32 q6,q6,q7
|
|
eor r10,r10,r2,ror#16
|
|
vadd.i32 q10,q10,q11
|
|
eor r14,r14,r3,ror#16
|
|
veor q12,q1,q2
|
|
add r8,r8,r10
|
|
veor q13,q5,q6
|
|
mov r7,r7,ror#20
|
|
veor q14,q9,q10
|
|
add r9,r9,r14
|
|
vshr.u32 q1,q12,#25
|
|
mov r4,r4,ror#20
|
|
vshr.u32 q5,q13,#25
|
|
eor r7,r7,r8,ror#20
|
|
vshr.u32 q9,q14,#25
|
|
eor r4,r4,r9,ror#20
|
|
vsli.32 q1,q12,#7
|
|
add r2,r2,r7
|
|
vsli.32 q5,q13,#7
|
|
mov r10,r10,ror#24
|
|
vsli.32 q9,q14,#7
|
|
add r3,r3,r4
|
|
vext.8 q2,q2,q2,#8
|
|
mov r14,r14,ror#24
|
|
vext.8 q6,q6,q6,#8
|
|
eor r10,r10,r2,ror#24
|
|
vext.8 q10,q10,q10,#8
|
|
eor r14,r14,r3,ror#24
|
|
vext.8 q1,q1,q1,#12
|
|
add r8,r8,r10
|
|
vext.8 q5,q5,q5,#12
|
|
mov r7,r7,ror#25
|
|
vext.8 q9,q9,q9,#12
|
|
add r9,r9,r14
|
|
vext.8 q3,q3,q3,#4
|
|
mov r4,r4,ror#25
|
|
vext.8 q7,q7,q7,#4
|
|
eor r7,r7,r8,ror#25
|
|
vext.8 q11,q11,q11,#4
|
|
eor r4,r4,r9,ror#25
|
|
bne .Loop_neon
|
|
|
|
add r11,sp,#32
|
|
vld1.32 {q12,q13},[sp] @ load key material
|
|
vld1.32 {q14,q15},[r11]
|
|
|
|
ldr r11,[sp,#4*(32+2)] @ load len
|
|
|
|
str r8, [sp,#4*(16+8)] @ modulo-scheduled store
|
|
str r9, [sp,#4*(16+9)]
|
|
str r12,[sp,#4*(16+12)]
|
|
str r10, [sp,#4*(16+13)]
|
|
str r14,[sp,#4*(16+14)]
|
|
|
|
@ at this point we have first half of 512-bit result in
|
|
@ rx and second half at sp+4*(16+8)
|
|
|
|
ldr r12,[sp,#4*(32+1)] @ load inp
|
|
ldr r14,[sp,#4*(32+0)] @ load out
|
|
|
|
vadd.i32 q0,q0,q12 @ accumulate key material
|
|
vadd.i32 q4,q4,q12
|
|
vadd.i32 q8,q8,q12
|
|
vldr d24,[sp,#4*(16+0)] @ one
|
|
|
|
vadd.i32 q1,q1,q13
|
|
vadd.i32 q5,q5,q13
|
|
vadd.i32 q9,q9,q13
|
|
vldr d26,[sp,#4*(16+2)] @ two
|
|
|
|
vadd.i32 q2,q2,q14
|
|
vadd.i32 q6,q6,q14
|
|
vadd.i32 q10,q10,q14
|
|
vadd.i32 d14,d14,d24 @ counter+1
|
|
vadd.i32 d22,d22,d26 @ counter+2
|
|
|
|
vadd.i32 q3,q3,q15
|
|
vadd.i32 q7,q7,q15
|
|
vadd.i32 q11,q11,q15
|
|
|
|
cmp r11,#64*4
|
|
blo .Ltail_neon
|
|
|
|
vld1.8 {q12,q13},[r12]! @ load input
|
|
mov r11,sp
|
|
vld1.8 {q14,q15},[r12]!
|
|
veor q0,q0,q12 @ xor with input
|
|
veor q1,q1,q13
|
|
vld1.8 {q12,q13},[r12]!
|
|
veor q2,q2,q14
|
|
veor q3,q3,q15
|
|
vld1.8 {q14,q15},[r12]!
|
|
|
|
veor q4,q4,q12
|
|
vst1.8 {q0,q1},[r14]! @ store output
|
|
veor q5,q5,q13
|
|
vld1.8 {q12,q13},[r12]!
|
|
veor q6,q6,q14
|
|
vst1.8 {q2,q3},[r14]!
|
|
veor q7,q7,q15
|
|
vld1.8 {q14,q15},[r12]!
|
|
|
|
veor q8,q8,q12
|
|
vld1.32 {q0,q1},[r11]! @ load for next iteration
|
|
veor d25,d25,d25
|
|
vldr d24,[sp,#4*(16+4)] @ four
|
|
veor q9,q9,q13
|
|
vld1.32 {q2,q3},[r11]
|
|
veor q10,q10,q14
|
|
vst1.8 {q4,q5},[r14]!
|
|
veor q11,q11,q15
|
|
vst1.8 {q6,q7},[r14]!
|
|
|
|
vadd.i32 d6,d6,d24 @ next counter value
|
|
vldr d24,[sp,#4*(16+0)] @ one
|
|
|
|
ldmia sp,{r8,r9,r10,r11} @ load key material
|
|
add r0,r0,r8 @ accumulate key material
|
|
ldr r8,[r12],#16 @ load input
|
|
vst1.8 {q8,q9},[r14]!
|
|
add r1,r1,r9
|
|
ldr r9,[r12,#-12]
|
|
vst1.8 {q10,q11},[r14]!
|
|
add r2,r2,r10
|
|
ldr r10,[r12,#-8]
|
|
add r3,r3,r11
|
|
ldr r11,[r12,#-4]
|
|
# ifdef __ARMEB__
|
|
rev r0,r0
|
|
rev r1,r1
|
|
rev r2,r2
|
|
rev r3,r3
|
|
# endif
|
|
eor r0,r0,r8 @ xor with input
|
|
add r8,sp,#4*(4)
|
|
eor r1,r1,r9
|
|
str r0,[r14],#16 @ store output
|
|
eor r2,r2,r10
|
|
str r1,[r14,#-12]
|
|
eor r3,r3,r11
|
|
ldmia r8,{r8,r9,r10,r11} @ load key material
|
|
str r2,[r14,#-8]
|
|
str r3,[r14,#-4]
|
|
|
|
add r4,r4,r8 @ accumulate key material
|
|
ldr r8,[r12],#16 @ load input
|
|
add r5,r5,r9
|
|
ldr r9,[r12,#-12]
|
|
add r6,r6,r10
|
|
ldr r10,[r12,#-8]
|
|
add r7,r7,r11
|
|
ldr r11,[r12,#-4]
|
|
# ifdef __ARMEB__
|
|
rev r4,r4
|
|
rev r5,r5
|
|
rev r6,r6
|
|
rev r7,r7
|
|
# endif
|
|
eor r4,r4,r8
|
|
add r8,sp,#4*(8)
|
|
eor r5,r5,r9
|
|
str r4,[r14],#16 @ store output
|
|
eor r6,r6,r10
|
|
str r5,[r14,#-12]
|
|
eor r7,r7,r11
|
|
ldmia r8,{r8,r9,r10,r11} @ load key material
|
|
str r6,[r14,#-8]
|
|
add r0,sp,#4*(16+8)
|
|
str r7,[r14,#-4]
|
|
|
|
ldmia r0,{r0,r1,r2,r3,r4,r5,r6,r7} @ load second half
|
|
|
|
add r0,r0,r8 @ accumulate key material
|
|
ldr r8,[r12],#16 @ load input
|
|
add r1,r1,r9
|
|
ldr r9,[r12,#-12]
|
|
# ifdef __thumb2__
|
|
it hi
|
|
# endif
|
|
strhi r10,[sp,#4*(16+10)] @ copy "rx" while at it
|
|
add r2,r2,r10
|
|
ldr r10,[r12,#-8]
|
|
# ifdef __thumb2__
|
|
it hi
|
|
# endif
|
|
strhi r11,[sp,#4*(16+11)] @ copy "rx" while at it
|
|
add r3,r3,r11
|
|
ldr r11,[r12,#-4]
|
|
# ifdef __ARMEB__
|
|
rev r0,r0
|
|
rev r1,r1
|
|
rev r2,r2
|
|
rev r3,r3
|
|
# endif
|
|
eor r0,r0,r8
|
|
add r8,sp,#4*(12)
|
|
eor r1,r1,r9
|
|
str r0,[r14],#16 @ store output
|
|
eor r2,r2,r10
|
|
str r1,[r14,#-12]
|
|
eor r3,r3,r11
|
|
ldmia r8,{r8,r9,r10,r11} @ load key material
|
|
str r2,[r14,#-8]
|
|
str r3,[r14,#-4]
|
|
|
|
add r4,r4,r8 @ accumulate key material
|
|
add r8,r8,#4 @ next counter value
|
|
add r5,r5,r9
|
|
str r8,[sp,#4*(12)] @ save next counter value
|
|
ldr r8,[r12],#16 @ load input
|
|
add r6,r6,r10
|
|
add r4,r4,#3 @ counter+3
|
|
ldr r9,[r12,#-12]
|
|
add r7,r7,r11
|
|
ldr r10,[r12,#-8]
|
|
ldr r11,[r12,#-4]
|
|
# ifdef __ARMEB__
|
|
rev r4,r4
|
|
rev r5,r5
|
|
rev r6,r6
|
|
rev r7,r7
|
|
# endif
|
|
eor r4,r4,r8
|
|
# ifdef __thumb2__
|
|
it hi
|
|
# endif
|
|
ldrhi r8,[sp,#4*(32+2)] @ re-load len
|
|
eor r5,r5,r9
|
|
eor r6,r6,r10
|
|
str r4,[r14],#16 @ store output
|
|
eor r7,r7,r11
|
|
str r5,[r14,#-12]
|
|
sub r11,r8,#64*4 @ len-=64*4
|
|
str r6,[r14,#-8]
|
|
str r7,[r14,#-4]
|
|
bhi .Loop_neon_outer
|
|
|
|
b .Ldone_neon
|
|
|
|
.align 4
|
|
.Lbreak_neon:
|
|
@ harmonize NEON and integer-only stack frames: load data
|
|
@ from NEON frame, but save to integer-only one; distance
|
|
@ between the two is 4*(32+4+16-32)=4*(20).
|
|
|
|
str r11, [sp,#4*(20+32+2)] @ save len
|
|
add r11,sp,#4*(32+4)
|
|
str r12, [sp,#4*(20+32+1)] @ save inp
|
|
str r14, [sp,#4*(20+32+0)] @ save out
|
|
|
|
ldr r12,[sp,#4*(16+10)]
|
|
ldr r14,[sp,#4*(16+11)]
|
|
vldmia r11,{d8,d9,d10,d11,d12,d13,d14,d15} @ fulfill ABI requirement
|
|
str r12,[sp,#4*(20+16+10)] @ copy "rx"
|
|
str r14,[sp,#4*(20+16+11)] @ copy "rx"
|
|
|
|
ldr r11, [sp,#4*(15)]
|
|
ldr r12,[sp,#4*(12)] @ modulo-scheduled load
|
|
ldr r10, [sp,#4*(13)]
|
|
ldr r14,[sp,#4*(14)]
|
|
str r11, [sp,#4*(20+16+15)]
|
|
add r11,sp,#4*(20)
|
|
vst1.32 {q0,q1},[r11]! @ copy key
|
|
add sp,sp,#4*(20) @ switch frame
|
|
vst1.32 {q2,q3},[r11]
|
|
mov r11,#10
|
|
b .Loop @ go integer-only
|
|
|
|
.align 4
|
|
.Ltail_neon:
|
|
cmp r11,#64*3
|
|
bhs .L192_or_more_neon
|
|
cmp r11,#64*2
|
|
bhs .L128_or_more_neon
|
|
cmp r11,#64*1
|
|
bhs .L64_or_more_neon
|
|
|
|
add r8,sp,#4*(8)
|
|
vst1.8 {q0,q1},[sp]
|
|
add r10,sp,#4*(0)
|
|
vst1.8 {q2,q3},[r8]
|
|
b .Loop_tail_neon
|
|
|
|
.align 4
|
|
.L64_or_more_neon:
|
|
vld1.8 {q12,q13},[r12]!
|
|
vld1.8 {q14,q15},[r12]!
|
|
veor q0,q0,q12
|
|
veor q1,q1,q13
|
|
veor q2,q2,q14
|
|
veor q3,q3,q15
|
|
vst1.8 {q0,q1},[r14]!
|
|
vst1.8 {q2,q3},[r14]!
|
|
|
|
beq .Ldone_neon
|
|
|
|
add r8,sp,#4*(8)
|
|
vst1.8 {q4,q5},[sp]
|
|
add r10,sp,#4*(0)
|
|
vst1.8 {q6,q7},[r8]
|
|
sub r11,r11,#64*1 @ len-=64*1
|
|
b .Loop_tail_neon
|
|
|
|
.align 4
|
|
.L128_or_more_neon:
|
|
vld1.8 {q12,q13},[r12]!
|
|
vld1.8 {q14,q15},[r12]!
|
|
veor q0,q0,q12
|
|
veor q1,q1,q13
|
|
vld1.8 {q12,q13},[r12]!
|
|
veor q2,q2,q14
|
|
veor q3,q3,q15
|
|
vld1.8 {q14,q15},[r12]!
|
|
|
|
veor q4,q4,q12
|
|
veor q5,q5,q13
|
|
vst1.8 {q0,q1},[r14]!
|
|
veor q6,q6,q14
|
|
vst1.8 {q2,q3},[r14]!
|
|
veor q7,q7,q15
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vst1.8 {q4,q5},[r14]!
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|
vst1.8 {q6,q7},[r14]!
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|
|
|
beq .Ldone_neon
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|
|
|
add r8,sp,#4*(8)
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|
vst1.8 {q8,q9},[sp]
|
|
add r10,sp,#4*(0)
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|
vst1.8 {q10,q11},[r8]
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|
sub r11,r11,#64*2 @ len-=64*2
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|
b .Loop_tail_neon
|
|
|
|
.align 4
|
|
.L192_or_more_neon:
|
|
vld1.8 {q12,q13},[r12]!
|
|
vld1.8 {q14,q15},[r12]!
|
|
veor q0,q0,q12
|
|
veor q1,q1,q13
|
|
vld1.8 {q12,q13},[r12]!
|
|
veor q2,q2,q14
|
|
veor q3,q3,q15
|
|
vld1.8 {q14,q15},[r12]!
|
|
|
|
veor q4,q4,q12
|
|
veor q5,q5,q13
|
|
vld1.8 {q12,q13},[r12]!
|
|
veor q6,q6,q14
|
|
vst1.8 {q0,q1},[r14]!
|
|
veor q7,q7,q15
|
|
vld1.8 {q14,q15},[r12]!
|
|
|
|
veor q8,q8,q12
|
|
vst1.8 {q2,q3},[r14]!
|
|
veor q9,q9,q13
|
|
vst1.8 {q4,q5},[r14]!
|
|
veor q10,q10,q14
|
|
vst1.8 {q6,q7},[r14]!
|
|
veor q11,q11,q15
|
|
vst1.8 {q8,q9},[r14]!
|
|
vst1.8 {q10,q11},[r14]!
|
|
|
|
beq .Ldone_neon
|
|
|
|
ldmia sp,{r8,r9,r10,r11} @ load key material
|
|
add r0,r0,r8 @ accumulate key material
|
|
add r8,sp,#4*(4)
|
|
add r1,r1,r9
|
|
add r2,r2,r10
|
|
add r3,r3,r11
|
|
ldmia r8,{r8,r9,r10,r11} @ load key material
|
|
|
|
add r4,r4,r8 @ accumulate key material
|
|
add r8,sp,#4*(8)
|
|
add r5,r5,r9
|
|
add r6,r6,r10
|
|
add r7,r7,r11
|
|
ldmia r8,{r8,r9,r10,r11} @ load key material
|
|
# ifdef __ARMEB__
|
|
rev r0,r0
|
|
rev r1,r1
|
|
rev r2,r2
|
|
rev r3,r3
|
|
rev r4,r4
|
|
rev r5,r5
|
|
rev r6,r6
|
|
rev r7,r7
|
|
# endif
|
|
stmia sp,{r0,r1,r2,r3,r4,r5,r6,r7}
|
|
add r0,sp,#4*(16+8)
|
|
|
|
ldmia r0,{r0,r1,r2,r3,r4,r5,r6,r7} @ load second half
|
|
|
|
add r0,r0,r8 @ accumulate key material
|
|
add r8,sp,#4*(12)
|
|
add r1,r1,r9
|
|
add r2,r2,r10
|
|
add r3,r3,r11
|
|
ldmia r8,{r8,r9,r10,r11} @ load key material
|
|
|
|
add r4,r4,r8 @ accumulate key material
|
|
add r8,sp,#4*(8)
|
|
add r5,r5,r9
|
|
add r4,r4,#3 @ counter+3
|
|
add r6,r6,r10
|
|
add r7,r7,r11
|
|
ldr r11,[sp,#4*(32+2)] @ re-load len
|
|
# ifdef __ARMEB__
|
|
rev r0,r0
|
|
rev r1,r1
|
|
rev r2,r2
|
|
rev r3,r3
|
|
rev r4,r4
|
|
rev r5,r5
|
|
rev r6,r6
|
|
rev r7,r7
|
|
# endif
|
|
stmia r8,{r0,r1,r2,r3,r4,r5,r6,r7}
|
|
add r10,sp,#4*(0)
|
|
sub r11,r11,#64*3 @ len-=64*3
|
|
|
|
.Loop_tail_neon:
|
|
ldrb r8,[r10],#1 @ read buffer on stack
|
|
ldrb r9,[r12],#1 @ read input
|
|
subs r11,r11,#1
|
|
eor r8,r8,r9
|
|
strb r8,[r14],#1 @ store output
|
|
bne .Loop_tail_neon
|
|
|
|
.Ldone_neon:
|
|
add sp,sp,#4*(32+4)
|
|
vldmia sp,{d8,d9,d10,d11,d12,d13,d14,d15}
|
|
add sp,sp,#4*(16+3)
|
|
ldmia sp!,{r4,r5,r6,r7,r8,r9,r10,r11,pc}
|
|
.size ChaCha20_neon,.-ChaCha20_neon
|
|
.comm OPENSSL_armcap_P,4,4
|
|
#endif
|
|
#endif
|
|
#endif // !OPENSSL_NO_ASM
|
|
.section .note.GNU-stack,"",%progbits
|