Commit 6133b4ed authored by Andy Polyakov's avatar Andy Polyakov
Browse files

ARMv8 assembly pack: add OPENSSL_cleanse. 



Reviewed-by: default avatarRichard Levitte <levitte@openssl.org>
parent a7f9e0a4

Configurations/00-base-templates.conf

+1 −1
Original line number Diff line number Diff line
@@ -245,7 +245,7 @@ 
    },

    aarch64_asm => {

	template	=> 1,

	cpuid_asm_src   => "armcap.c arm64cpuid.S mem_clr.c",

	cpuid_asm_src   => "armcap.c arm64cpuid.S",

	ec_asm_src      => "ecp_nistz256.c ecp_nistz256-armv8.S",

	bn_asm_src      => "bn_asm.c armv8-mont.S",

	aes_asm_src     => "aes_core.c aes_cbc.c aesv8-armx.S vpaes-armv8.S",

crypto/arm64cpuid.pl

+31 −0
Original line number Diff line number Diff line
@@ -69,6 +69,37 @@ _armv8_pmull_probe: 
	pmull	v0.1q, v0.1d, v0.1d

	ret

.size	_armv8_pmull_probe,.-_armv8_pmull_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

___



print $code;