linux-kernel - Re: [PATCH 03/11] Optimized sha256 x86_64 assembly routine using Supplemental SSE3 instructions.

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Message-ID: <514EF0F6.4080604@iki.fi>
Date:	Sun, 24 Mar 2013 14:26:30 +0200
From:	Jussi Kivilinna <jussi.kivilinna@....fi>
To:	Tim Chen <tim.c.chen@...ux.intel.com>
CC:	Herbert Xu <herbert@...dor.apana.org.au>,
	"H. Peter Anvin" <hpa@...or.com>,
	"David S.Miller" <davem@...emloft.net>,
	Kirk Yap <kirk.s.yap@...el.com>,
	David Cote <david.m.cote@...el.com>,
	James Guilford <james.guilford@...el.com>,
	Wajdi Feghali <wajdi.k.feghali@...el.com>,
	linux-kernel <linux-kernel@...r.kernel.org>,
	linux-crypto@...r.kernel.org
Subject: Re: [PATCH 03/11] Optimized sha256 x86_64 assembly routine using
 Supplemental SSE3 instructions.

On 22.03.2013 23:29, Tim Chen wrote:
> Provides SHA256 x86_64 assembly routine optimized with SSSE3 instructions.
> Speedup of 40% or more has been measured over the generic implementation.
> 
> Signed-off-by: Tim Chen <tim.c.chen@...ux.intel.com>
> ---
>  arch/x86/crypto/sha256-ssse3-asm.S | 504 +++++++++++++++++++++++++++++++++++++
>  1 file changed, 504 insertions(+)
>  create mode 100644 arch/x86/crypto/sha256-ssse3-asm.S
> 
> diff --git a/arch/x86/crypto/sha256-ssse3-asm.S b/arch/x86/crypto/sha256-ssse3-asm.S

..snip..

> +
> +########################################################################
> +## void sha256_transform_ssse3(void *input_data, UINT32 digest[8], UINT64 num_blks)
> +## arg 1 : pointer to input data
> +## arg 2 : pointer to digest
> +## arg 3 : Num blocks
> +########################################################################
> +.text
> +.global sha256_transform_ssse3
> +.align 32
> +sha256_transform_ssse3:

Maybe use ENRTY/ENDPROC macros for exporting functions from assembly?

-Jussi

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