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#! /usr/bin/env perl
# Copyright 2015-2022 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:
AARCH64_VALID_CALL_TARGET
orr v15.16b, v15.16b, v15.16b
ret
.size _armv7_neon_probe,.-_armv7_neon_probe
.globl _armv7_tick
.type _armv7_tick,%function
_armv7_tick:
AARCH64_VALID_CALL_TARGET
#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:
AARCH64_VALID_CALL_TARGET
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:
AARCH64_VALID_CALL_TARGET
sha1h s0, s0
ret
.size _armv8_sha1_probe,.-_armv8_sha1_probe
.globl _armv8_sha256_probe
.type _armv8_sha256_probe,%function
_armv8_sha256_probe:
AARCH64_VALID_CALL_TARGET
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:
AARCH64_VALID_CALL_TARGET
pmull v0.1q, v0.1d, v0.1d
ret
.size _armv8_pmull_probe,.-_armv8_pmull_probe
.globl _armv8_sm4_probe
.type _armv8_sm4_probe,%function
_armv8_sm4_probe:
AARCH64_VALID_CALL_TARGET
.inst 0xcec08400 // sm4e v0.4s, v0.4s
ret
.size _armv8_sm4_probe,.-_armv8_sm4_probe
.globl _armv8_sha512_probe
.type _armv8_sha512_probe,%function
_armv8_sha512_probe:
AARCH64_VALID_CALL_TARGET
.inst 0xcec08000 // sha512su0 v0.2d,v0.2d
ret
.size _armv8_sha512_probe,.-_armv8_sha512_probe
.globl _armv8_eor3_probe
.type _armv8_eor3_probe,%function
_armv8_eor3_probe:
AARCH64_VALID_CALL_TARGET
.inst 0xce010800 // eor3 v0.16b, v0.16b, v1.16b, v2.16b
ret
.size _armv8_eor3_probe,.-_armv8_eor3_probe
.globl _armv8_sve_probe
.type _armv8_sve_probe,%function
_armv8_sve_probe:
AARCH64_VALID_CALL_TARGET
.inst 0x04a03000 // eor z0.d,z0.d,z0.d
ret
.size _armv8_sve_probe,.-_armv8_sve_probe
.globl _armv8_sve2_probe
.type _armv8_sve2_probe,%function
_armv8_sve2_probe:
AARCH64_VALID_CALL_TARGET
.inst 0x04e03400 // xar z0.d,z0.d,z0.d
ret
.size _armv8_sve2_probe,.-_armv8_sve2_probe
.globl _armv8_cpuid_probe
.type _armv8_cpuid_probe,%function
_armv8_cpuid_probe:
AARCH64_VALID_CALL_TARGET
mrs x0, midr_el1
ret
.size _armv8_cpuid_probe,.-_armv8_cpuid_probe
.globl _armv8_sm3_probe
.type _armv8_sm3_probe,%function
_armv8_sm3_probe:
AARCH64_VALID_CALL_TARGET
.inst 0xce63c004 // sm3partw1 v4.4s, v0.4s, v3.4s
ret
.size _armv8_sm3_probe,.-_armv8_sm3_probe
.globl OPENSSL_cleanse
.type OPENSSL_cleanse,%function
.align 5
OPENSSL_cleanse:
AARCH64_VALID_CALL_TARGET
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:
AARCH64_VALID_CALL_TARGET
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
.globl _armv8_rng_probe
.type _armv8_rng_probe,%function
_armv8_rng_probe:
AARCH64_VALID_CALL_TARGET
mrs x0, s3_3_c2_c4_0 // rndr
mrs x0, s3_3_c2_c4_1 // rndrrs
ret
.size _armv8_rng_probe,.-_armv8_rng_probe
___
sub gen_random {
my $rdop = shift;
my $rand_reg = $rdop eq "rndr" ? "s3_3_c2_c4_0" : "s3_3_c2_c4_1";
return <<___;
// Fill buffer with Randomly Generated Bytes
// inputs: char * in x0 - Pointer to buffer
// size_t in x1 - Number of bytes to write to buffer
// outputs: size_t in x0 - Number of bytes successfully written to buffer
.globl OPENSSL_${rdop}_asm
.type OPENSSL_${rdop}_asm,%function
.align 4
OPENSSL_${rdop}_asm:
AARCH64_VALID_CALL_TARGET
mov x2,xzr
mov x3,xzr
.align 4
.Loop_${rdop}:
cmp x1,#0
b.eq .${rdop}_done
mov x3,xzr
mrs x3,$rand_reg
b.eq .${rdop}_done
cmp x1,#8
b.lt .Loop_single_byte_${rdop}
str x3,[x0]
add x0,x0,#8
add x2,x2,#8
subs x1,x1,#8
b.ge .Loop_${rdop}
.align 4
.Loop_single_byte_${rdop}:
strb w3,[x0]
lsr x3,x3,#8
add x2,x2,#1
add x0,x0,#1
subs x1,x1,#1
b.gt .Loop_single_byte_${rdop}
.align 4
.${rdop}_done:
mov x0,x2
ret
.size OPENSSL_${rdop}_asm,.-OPENSSL_${rdop}_asm
___
}
$code .= gen_random("rndr");
$code .= gen_random("rndrrs");
print $code;
close STDOUT or die "error closing STDOUT: $!";
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