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

#! /usr/bin/env perl
# Copyright 2015-2020 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


# $output is the last argument if it looks like a file (it has an extension)
# $flavour is the first argument if it doesn't look like a file
$output = $#ARGV >= 0 && $ARGV[$#ARGV] =~ m|\.\w+$| ? pop : undef;
$flavour = $#ARGV >= 0 && $ARGV[0] !~ m|\.| ? shift : undef;

$0 =~ m/(.*[\/\\])[^\/\\]+$/; $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\""
    or die "can't call $xlate: $!";
*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	_armv8_cpuid_probe
.type	_armv8_cpuid_probe,%function
_armv8_cpuid_probe:
	mrs	x0, midr_el1
	ret
.size	_armv8_cpuid_probe,.-_armv8_cpuid_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 or die "error closing STDOUT: $!";
Commit	Line	Data
e0a65194	1	#! /usr/bin/env perl
33388b44	2	# Copyright 2015-2020 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	9
1aa89a7a RL	10	# $output is the last argument if it looks like a file (it has an extension)
	11	# $flavour is the first argument if it doesn't look like a file
	12	$output = $#ARGV >= 0 && $ARGV[$#ARGV] =~ m\|\.\w+$\| ? pop : undef;
	13	$flavour = $#ARGV >= 0 && $ARGV[0] !~ m\|\.\| ? shift : undef;
9b05cbc3 AP	14
	15	$0 =~ m/(.*[\/\\])[^\/\\]+$/; $dir=$1;
	16	( $xlate="${dir}arm-xlate.pl" and -f $xlate ) or
	17	( $xlate="${dir}perlasm/arm-xlate.pl" and -f $xlate) or
	18	die "can't locate arm-xlate.pl";
	19
1aa89a7a RL	20	open OUT,"\| \"$^X\" $xlate $flavour \"$output\""
1aa89a7a RL	21	or die "can't call $xlate: $!";
9b05cbc3 AP	22	STDOUT=OUT;
	23
	24	$code.=<<___;
e8d93e34 AP	25	#include "arm_arch.h"
	26
	27	.text
	28	.arch armv8-a+crypto
	29
	30	.align 5
9b05cbc3	31	.globl _armv7_neon_probe
e8d93e34 AP	32	.type _armv7_neon_probe,%function
	33	_armv7_neon_probe:
	34	orr v15.16b, v15.16b, v15.16b
	35	ret
	36	.size _armv7_neon_probe,.-_armv7_neon_probe
	37
9b05cbc3	38	.globl _armv7_tick
e8d93e34 AP	39	.type _armv7_tick,%function
e8d93e34 AP	40	_armv7_tick:
9b05cbc3 AP	41	#ifdef __APPLE__
	42	mrs x0, CNTPCT_EL0
	43	#else
e8d93e34	44	mrs x0, CNTVCT_EL0
9b05cbc3	45	#endif
e8d93e34 AP	46	ret
	47	.size _armv7_tick,.-_armv7_tick
	48
9b05cbc3	49	.globl _armv8_aes_probe
e8d93e34 AP	50	.type _armv8_aes_probe,%function
	51	_armv8_aes_probe:
	52	aese v0.16b, v0.16b
	53	ret
	54	.size _armv8_aes_probe,.-_armv8_aes_probe
	55
9b05cbc3	56	.globl _armv8_sha1_probe
e8d93e34 AP	57	.type _armv8_sha1_probe,%function
	58	_armv8_sha1_probe:
	59	sha1h s0, s0
	60	ret
	61	.size _armv8_sha1_probe,.-_armv8_sha1_probe
	62
9b05cbc3	63	.globl _armv8_sha256_probe
e8d93e34 AP	64	.type _armv8_sha256_probe,%function
	65	_armv8_sha256_probe:
	66	sha256su0 v0.4s, v0.4s
	67	ret
	68	.size _armv8_sha256_probe,.-_armv8_sha256_probe
77f3612e	69
9b05cbc3	70	.globl _armv8_pmull_probe
e8d93e34 AP	71	.type _armv8_pmull_probe,%function
	72	_armv8_pmull_probe:
	73	pmull v0.1q, v0.1d, v0.1d
	74	ret
	75	.size _armv8_pmull_probe,.-_armv8_pmull_probe
6133b4ed	76
77f3612e AP	77	.globl _armv8_sha512_probe
	78	.type _armv8_sha512_probe,%function
	79	_armv8_sha512_probe:
	80	.long 0xcec08000 // sha512su0 v0.2d,v0.2d
	81	ret
	82	.size _armv8_sha512_probe,.-_armv8_sha512_probe
	83
5ea64b45 FF	84	.globl _armv8_cpuid_probe
	85	.type _armv8_cpuid_probe,%function
	86	_armv8_cpuid_probe:
	87	mrs x0, midr_el1
	88	ret
	89	.size _armv8_cpuid_probe,.-_armv8_cpuid_probe
	90
6133b4ed AP	91	.globl OPENSSL_cleanse
	92	.type OPENSSL_cleanse,%function
	93	.align 5
	94	OPENSSL_cleanse:
	95	cbz x1,.Lret // len==0?
	96	cmp x1,#15
	97	b.hi .Lot // len>15
	98	nop
	99	.Little:
	100	strb wzr,[x0],#1 // store byte-by-byte
	101	subs x1,x1,#1
	102	b.ne .Little
	103	.Lret: ret
	104
	105	.align 4
	106	.Lot: tst x0,#7
	107	b.eq .Laligned // inp is aligned
	108	strb wzr,[x0],#1 // store byte-by-byte
	109	sub x1,x1,#1
	110	b .Lot
	111
	112	.align 4
	113	.Laligned:
	114	str xzr,[x0],#8 // store word-by-word
	115	sub x1,x1,#8
	116	tst x1,#-8
	117	b.ne .Laligned // len>=8
	118	cbnz x1,.Little // len!=0?
	119	ret
	120	.size OPENSSL_cleanse,.-OPENSSL_cleanse
e33826f0 AP	121
	122	.globl CRYPTO_memcmp
	123	.type CRYPTO_memcmp,%function
	124	.align 4
	125	CRYPTO_memcmp:
	126	eor w3,w3,w3
	127	cbz x2,.Lno_data // len==0?
9a708bf9 AP	128	cmp x2,#16
	129	b.ne .Loop_cmp
	130	ldp x8,x9,[x0]
	131	ldp x10,x11,[x1]
	132	eor x8,x8,x10
	133	eor x9,x9,x11
	134	orr x8,x8,x9
	135	mov x0,#1
	136	cmp x8,#0
	137	csel x0,xzr,x0,eq
	138	ret
	139
	140	.align 4
e33826f0 AP	141	.Loop_cmp:
	142	ldrb w4,[x0],#1
	143	ldrb w5,[x1],#1
	144	eor w4,w4,w5
	145	orr w3,w3,w4
	146	subs x2,x2,#1
	147	b.ne .Loop_cmp
	148
	149	.Lno_data:
	150	neg w0,w3
	151	lsr w0,w0,#31
	152	ret
	153	.size CRYPTO_memcmp,.-CRYPTO_memcmp
9b05cbc3 AP	154	___
	155
	156	print $code;
a21314db	157	close STDOUT or die "error closing STDOUT: $!";