[thirdparty/openssl.git] / crypto / arm64cpuid.pl

#! /usr/bin/env perl
# Copyright 2015-2018 The OpenSSL Project Authors. All Rights Reserved.
#
# Licensed under the Apache License 2.0 (the "License").  You may not use
# this file except in compliance with the License.  You can obtain a copy
# in the file LICENSE in the source distribution or at
# https://www.openssl.org/source/license.html


$flavour = shift;
$output  = shift;

$0 =~ m/(.*[\/\\])[^\/\\]+$/; $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 OUT,"| \"$^X\" $xlate $flavour $output";
*STDOUT=*OUT;

$code.=<<___;
#include "arm_arch.h"

.text
.arch	armv8-a+crypto

.align	5
.globl	_armv7_neon_probe
.type	_armv7_neon_probe,%function
_armv7_neon_probe:
	orr	v15.16b, v15.16b, v15.16b
	ret
.size	_armv7_neon_probe,.-_armv7_neon_probe

.globl	_armv7_tick
.type	_armv7_tick,%function
_armv7_tick:
#ifdef	__APPLE__
	mrs	x0, CNTPCT_EL0
#else
	mrs	x0, CNTVCT_EL0
#endif
	ret
.size	_armv7_tick,.-_armv7_tick

.globl	_armv8_aes_probe
.type	_armv8_aes_probe,%function
_armv8_aes_probe:
	aese	v0.16b, v0.16b
	ret
.size	_armv8_aes_probe,.-_armv8_aes_probe

.globl	_armv8_sha1_probe
.type	_armv8_sha1_probe,%function
_armv8_sha1_probe:
	sha1h	s0, s0
	ret
.size	_armv8_sha1_probe,.-_armv8_sha1_probe

.globl	_armv8_sha256_probe
.type	_armv8_sha256_probe,%function
_armv8_sha256_probe:
	sha256su0	v0.4s, v0.4s
	ret
.size	_armv8_sha256_probe,.-_armv8_sha256_probe

.globl	_armv8_pmull_probe
.type	_armv8_pmull_probe,%function
_armv8_pmull_probe:
	pmull	v0.1q, v0.1d, v0.1d
	ret
.size	_armv8_pmull_probe,.-_armv8_pmull_probe

.globl	_armv8_sha512_probe
.type	_armv8_sha512_probe,%function
_armv8_sha512_probe:
	.long	0xcec08000	// sha512su0	v0.2d,v0.2d
	ret
.size	_armv8_sha512_probe,.-_armv8_sha512_probe

.globl	OPENSSL_cleanse
.type	OPENSSL_cleanse,%function
.align	5
OPENSSL_cleanse:
	cbz	x1,.Lret	// len==0?
	cmp	x1,#15
	b.hi	.Lot		// len>15
	nop
.Little:
	strb	wzr,[x0],#1	// store byte-by-byte
	subs	x1,x1,#1
	b.ne	.Little
.Lret:	ret

.align	4
.Lot:	tst	x0,#7
	b.eq	.Laligned	// inp is aligned
	strb	wzr,[x0],#1	// store byte-by-byte
	sub	x1,x1,#1
	b	.Lot

.align	4
.Laligned:
	str	xzr,[x0],#8	// store word-by-word
	sub	x1,x1,#8
	tst	x1,#-8
	b.ne	.Laligned	// len>=8
	cbnz	x1,.Little	// len!=0?
	ret
.size	OPENSSL_cleanse,.-OPENSSL_cleanse

.globl	CRYPTO_memcmp
.type	CRYPTO_memcmp,%function
.align	4
CRYPTO_memcmp:
	eor	w3,w3,w3
	cbz	x2,.Lno_data	// len==0?
	cmp	x2,#16
	b.ne	.Loop_cmp
	ldp	x8,x9,[x0]
	ldp	x10,x11,[x1]
	eor	x8,x8,x10
	eor	x9,x9,x11
	orr	x8,x8,x9
	mov	x0,#1
	cmp	x8,#0
	csel	x0,xzr,x0,eq
	ret

.align	4
.Loop_cmp:
	ldrb	w4,[x0],#1
	ldrb	w5,[x1],#1
	eor	w4,w4,w5
	orr	w3,w3,w4
	subs	x2,x2,#1
	b.ne	.Loop_cmp

.Lno_data:
	neg	w0,w3
	lsr	w0,w0,#31
	ret
.size	CRYPTO_memcmp,.-CRYPTO_memcmp
___

print $code;
close STDOUT;
Commit	Line	Data
e0a65194	1	#! /usr/bin/env perl
6738bf14	2	# Copyright 2015-2018 The OpenSSL Project Authors. All Rights Reserved.
e0a65194	3	#
0e9725bc	4	# Licensed under the Apache License 2.0 (the "License"). You may not use
e0a65194 RS	5	# this file except in compliance with the License. You can obtain a copy
	6	# in the file LICENSE in the source distribution or at
	7	# https://www.openssl.org/source/license.html
	8
9b05cbc3 AP	9
	10	$flavour = shift;
	11	$output = shift;
	12
	13	$0 =~ m/(.*[\/\\])[^\/\\]+$/; $dir=$1;
	14	( $xlate="${dir}arm-xlate.pl" and -f $xlate ) or
	15	( $xlate="${dir}perlasm/arm-xlate.pl" and -f $xlate) or
	16	die "can't locate arm-xlate.pl";
	17
	18	open OUT,"\| \"$^X\" $xlate $flavour $output";
	19	STDOUT=OUT;
	20
	21	$code.=<<___;
e8d93e34 AP	22	#include "arm_arch.h"
	23
	24	.text
	25	.arch armv8-a+crypto
	26
	27	.align 5
9b05cbc3	28	.globl _armv7_neon_probe
e8d93e34 AP	29	.type _armv7_neon_probe,%function
	30	_armv7_neon_probe:
	31	orr v15.16b, v15.16b, v15.16b
	32	ret
	33	.size _armv7_neon_probe,.-_armv7_neon_probe
	34
9b05cbc3	35	.globl _armv7_tick
e8d93e34 AP	36	.type _armv7_tick,%function
e8d93e34 AP	37	_armv7_tick:
9b05cbc3 AP	38	#ifdef __APPLE__
	39	mrs x0, CNTPCT_EL0
	40	#else
e8d93e34	41	mrs x0, CNTVCT_EL0
9b05cbc3	42	#endif
e8d93e34 AP	43	ret
	44	.size _armv7_tick,.-_armv7_tick
	45
9b05cbc3	46	.globl _armv8_aes_probe
e8d93e34 AP	47	.type _armv8_aes_probe,%function
	48	_armv8_aes_probe:
	49	aese v0.16b, v0.16b
	50	ret
	51	.size _armv8_aes_probe,.-_armv8_aes_probe
	52
9b05cbc3	53	.globl _armv8_sha1_probe
e8d93e34 AP	54	.type _armv8_sha1_probe,%function
	55	_armv8_sha1_probe:
	56	sha1h s0, s0
	57	ret
	58	.size _armv8_sha1_probe,.-_armv8_sha1_probe
	59
9b05cbc3	60	.globl _armv8_sha256_probe
e8d93e34 AP	61	.type _armv8_sha256_probe,%function
	62	_armv8_sha256_probe:
	63	sha256su0 v0.4s, v0.4s
	64	ret
	65	.size _armv8_sha256_probe,.-_armv8_sha256_probe
77f3612e	66
9b05cbc3	67	.globl _armv8_pmull_probe
e8d93e34 AP	68	.type _armv8_pmull_probe,%function
	69	_armv8_pmull_probe:
	70	pmull v0.1q, v0.1d, v0.1d
	71	ret
	72	.size _armv8_pmull_probe,.-_armv8_pmull_probe
6133b4ed	73
77f3612e AP	74	.globl _armv8_sha512_probe
	75	.type _armv8_sha512_probe,%function
	76	_armv8_sha512_probe:
	77	.long 0xcec08000 // sha512su0 v0.2d,v0.2d
	78	ret
	79	.size _armv8_sha512_probe,.-_armv8_sha512_probe
	80
6133b4ed AP	81	.globl OPENSSL_cleanse
	82	.type OPENSSL_cleanse,%function
	83	.align 5
	84	OPENSSL_cleanse:
	85	cbz x1,.Lret // len==0?
	86	cmp x1,#15
	87	b.hi .Lot // len>15
	88	nop
	89	.Little:
	90	strb wzr,[x0],#1 // store byte-by-byte
	91	subs x1,x1,#1
	92	b.ne .Little
	93	.Lret: ret
	94
	95	.align 4
	96	.Lot: tst x0,#7
	97	b.eq .Laligned // inp is aligned
	98	strb wzr,[x0],#1 // store byte-by-byte
	99	sub x1,x1,#1
	100	b .Lot
	101
	102	.align 4
	103	.Laligned:
	104	str xzr,[x0],#8 // store word-by-word
	105	sub x1,x1,#8
	106	tst x1,#-8
	107	b.ne .Laligned // len>=8
	108	cbnz x1,.Little // len!=0?
	109	ret
	110	.size OPENSSL_cleanse,.-OPENSSL_cleanse
e33826f0 AP	111
	112	.globl CRYPTO_memcmp
	113	.type CRYPTO_memcmp,%function
	114	.align 4
	115	CRYPTO_memcmp:
	116	eor w3,w3,w3
	117	cbz x2,.Lno_data // len==0?
9a708bf9 AP	118	cmp x2,#16
	119	b.ne .Loop_cmp
	120	ldp x8,x9,[x0]
	121	ldp x10,x11,[x1]
	122	eor x8,x8,x10
	123	eor x9,x9,x11
	124	orr x8,x8,x9
	125	mov x0,#1
	126	cmp x8,#0
	127	csel x0,xzr,x0,eq
	128	ret
	129
	130	.align 4
e33826f0 AP	131	.Loop_cmp:
	132	ldrb w4,[x0],#1
	133	ldrb w5,[x1],#1
	134	eor w4,w4,w5
	135	orr w3,w3,w4
	136	subs x2,x2,#1
	137	b.ne .Loop_cmp
	138
	139	.Lno_data:
	140	neg w0,w3
	141	lsr w0,w0,#31
	142	ret
	143	.size CRYPTO_memcmp,.-CRYPTO_memcmp
9b05cbc3 AP	144	___
	145
	146	print $code;
	147	close STDOUT;