linux/arch/arm/crypto/sha1-ce-core.S
Thomas Gleixner d2912cb15b treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 500
Based on 2 normalized pattern(s):

  this program is free software you can redistribute it and or modify
  it under the terms of the gnu general public license version 2 as
  published by the free software foundation

  this program is free software you can redistribute it and or modify
  it under the terms of the gnu general public license version 2 as
  published by the free software foundation #

extracted by the scancode license scanner the SPDX license identifier

  GPL-2.0-only

has been chosen to replace the boilerplate/reference in 4122 file(s).

Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Reviewed-by: Enrico Weigelt <info@metux.net>
Reviewed-by: Kate Stewart <kstewart@linuxfoundation.org>
Reviewed-by: Allison Randal <allison@lohutok.net>
Cc: linux-spdx@vger.kernel.org
Link: https://lkml.kernel.org/r/20190604081206.933168790@linutronix.de
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2019-06-19 17:09:55 +02:00

123 lines
2.5 KiB
ArmAsm

/* SPDX-License-Identifier: GPL-2.0-only */
/*
* sha1-ce-core.S - SHA-1 secure hash using ARMv8 Crypto Extensions
*
* Copyright (C) 2015 Linaro Ltd.
* Author: Ard Biesheuvel <ard.biesheuvel@linaro.org>
*/
#include <linux/linkage.h>
#include <asm/assembler.h>
.text
.fpu crypto-neon-fp-armv8
k0 .req q0
k1 .req q1
k2 .req q2
k3 .req q3
ta0 .req q4
ta1 .req q5
tb0 .req q5
tb1 .req q4
dga .req q6
dgb .req q7
dgbs .req s28
dg0 .req q12
dg1a0 .req q13
dg1a1 .req q14
dg1b0 .req q14
dg1b1 .req q13
.macro add_only, op, ev, rc, s0, dg1
.ifnb \s0
vadd.u32 tb\ev, q\s0, \rc
.endif
sha1h.32 dg1b\ev, dg0
.ifb \dg1
sha1\op\().32 dg0, dg1a\ev, ta\ev
.else
sha1\op\().32 dg0, \dg1, ta\ev
.endif
.endm
.macro add_update, op, ev, rc, s0, s1, s2, s3, dg1
sha1su0.32 q\s0, q\s1, q\s2
add_only \op, \ev, \rc, \s1, \dg1
sha1su1.32 q\s0, q\s3
.endm
.align 6
.Lsha1_rcon:
.word 0x5a827999, 0x5a827999, 0x5a827999, 0x5a827999
.word 0x6ed9eba1, 0x6ed9eba1, 0x6ed9eba1, 0x6ed9eba1
.word 0x8f1bbcdc, 0x8f1bbcdc, 0x8f1bbcdc, 0x8f1bbcdc
.word 0xca62c1d6, 0xca62c1d6, 0xca62c1d6, 0xca62c1d6
/*
* void sha1_ce_transform(struct sha1_state *sst, u8 const *src,
* int blocks);
*/
ENTRY(sha1_ce_transform)
/* load round constants */
adr ip, .Lsha1_rcon
vld1.32 {k0-k1}, [ip, :128]!
vld1.32 {k2-k3}, [ip, :128]
/* load state */
vld1.32 {dga}, [r0]
vldr dgbs, [r0, #16]
/* load input */
0: vld1.32 {q8-q9}, [r1]!
vld1.32 {q10-q11}, [r1]!
subs r2, r2, #1
#ifndef CONFIG_CPU_BIG_ENDIAN
vrev32.8 q8, q8
vrev32.8 q9, q9
vrev32.8 q10, q10
vrev32.8 q11, q11
#endif
vadd.u32 ta0, q8, k0
vmov dg0, dga
add_update c, 0, k0, 8, 9, 10, 11, dgb
add_update c, 1, k0, 9, 10, 11, 8
add_update c, 0, k0, 10, 11, 8, 9
add_update c, 1, k0, 11, 8, 9, 10
add_update c, 0, k1, 8, 9, 10, 11
add_update p, 1, k1, 9, 10, 11, 8
add_update p, 0, k1, 10, 11, 8, 9
add_update p, 1, k1, 11, 8, 9, 10
add_update p, 0, k1, 8, 9, 10, 11
add_update p, 1, k2, 9, 10, 11, 8
add_update m, 0, k2, 10, 11, 8, 9
add_update m, 1, k2, 11, 8, 9, 10
add_update m, 0, k2, 8, 9, 10, 11
add_update m, 1, k2, 9, 10, 11, 8
add_update m, 0, k3, 10, 11, 8, 9
add_update p, 1, k3, 11, 8, 9, 10
add_only p, 0, k3, 9
add_only p, 1, k3, 10
add_only p, 0, k3, 11
add_only p, 1
/* update state */
vadd.u32 dga, dga, dg0
vadd.u32 dgb, dgb, dg1a0
bne 0b
/* store new state */
vst1.32 {dga}, [r0]
vstr dgbs, [r0, #16]
bx lr
ENDPROC(sha1_ce_transform)