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Increase loop unrolling for skein hashes

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This patch was inspired by an opposite change made to shrink the code
for the boot loader.

On my i7-4770, it increases the skein1024 speed from 470 to 550 MB/s

Reviewed by:	sbruno
MFC after:	1 month
Sponsored by:	ScaleEngine Inc.
Differential Revision:	https://reviews.freebsd.org/D7824
This commit is contained in:
allanjude 2017-07-01 21:18:06 +00:00
parent 57c61ab190
commit 162ef49ab1
2 changed files with 8 additions and 0 deletions
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4
lib/libmd/Makefile
View File

@ -88,6 +88,8 @@ sys/md5.h: ${SRCTOP}/sys/${.TARGET} .NOMETA
CFLAGS+= -I${.CURDIR} -I${SRCTOP}/sys/crypto/sha2
CFLAGS+= -I${SRCTOP}/sys/crypto/skein
CFLAGS+= -DWEAK_REFS
# unroll the 256 and 512 loops, half unroll the 1024
CFLAGS+= -DSKEIN_LOOP=995
.PATH: ${.CURDIR}/${MACHINE_ARCH} ${SRCTOP}/sys/crypto/sha2
.PATH: ${SRCTOP}/sys/crypto/skein ${SRCTOP}/sys/crypto/skein/${MACHINE_ARCH}
@ -101,6 +103,8 @@ CFLAGS+= -DRMD160_ASM
.endif
.if exists(${MACHINE_ARCH}/skein_block_asm.s)
AFLAGS += --strip-local-absolute
# Fully unroll all loops in the assembly optimized version
AFLAGS+= --defsym SKEIN_LOOP=0
SRCS+= skein_block_asm.s
CFLAGS+= -DSKEIN_ASM -DSKEIN_USE_ASM=1792 # list of block functions to replace with assembly: 256+512+1024 = 1792
.endif

4
sys/modules/crypto/Makefile
View File

@ -19,11 +19,15 @@ SRCS += camellia.c camellia-api.c
SRCS += des_ecb.c des_enc.c des_setkey.c
SRCS += sha1.c sha256c.c sha512c.c
SRCS += skein.c skein_block.c
# unroll the 256 and 512 loops, half unroll the 1024
CFLAGS+= -DSKEIN_LOOP=995
.if exists(${MACHINE_ARCH}/skein_block_asm.s)
.PATH: ${SRCTOP}/sys/crypto/skein/${MACHINE_ARCH}
SRCS += skein_block_asm.s
CFLAGS += -DSKEIN_ASM -DSKEIN_USE_ASM=1792 # list of block functions to replace with assembly: 256+512+1024 = 1792
ACFLAGS += -DELF -Wa,--noexecstack
# Fully unroll all loops in the assembly optimized version
AFLAGS+= --defsym SKEIN_LOOP=0
.endif
SRCS += siphash.c
SRCS += gmac.c gfmult.c