freebsd-skq/sys/boot/zfs/Makefile
Allan Jude 3595d72f86 Disable loop unrolling in skein for sys/boot
When tsoome@ added skein support to the ZFS boot code and zfsloader, it
resulted in an explosion in code size, running close to a number of
limits.

The default for the C version of skein is to unroll all loops for
skein-256 and 512

Disabling the loop unrolling saves 20-28kb from each binary
boot1.efi
gptzfsboot
loader.efi
userboot.so
zfsloader

Reviewed by:	emaste, tsoome
Sponsored by:	ScaleEngine Inc.
Differential Revision:	https://reviews.freebsd.org/D7826
2016-10-06 03:32:30 +00:00

42 lines
864 B
Makefile

# $FreeBSD$
LIB= zfsboot
INTERNALLIB=
SRCS+= zfs.c
SRCS+= skein.c skein_block.c
# Do not unroll skein loops, reduce code size
CFLAGS+= -DSKEIN_LOOP=111
.PATH: ${.CURDIR}/../../crypto/skein
CFLAGS+= -DBOOTPROG=\"zfsloader\"
CFLAGS+= -I${.CURDIR}/../common -I${.CURDIR}/../.. -I.
CFLAGS+= -I${.CURDIR}/../../../lib/libstand
CFLAGS+= -I${.CURDIR}/../../cddl/boot/zfs
CFLAGS+= -I${.CURDIR}/../../crypto/skein
.if ${MACHINE_CPUARCH} == "i386" || ${MACHINE_CPUARCH} == "amd64"
CFLAGS+= -march=i386
.endif
.if ${MACHINE_CPUARCH} == "amd64"
CFLAGS+= -m32
.endif
CFLAGS+= -Wformat -Wall
.if ${MACHINE_CPUARCH} == "amd64"
CLEANFILES+= machine
machine: .NOMETA
ln -sf ${.CURDIR}/../../i386/include machine
.endif
.include <bsd.stand.mk>
.include <bsd.lib.mk>
.if ${MACHINE_CPUARCH} == "amd64"
.if !exists(machine)
beforedepend ${OBJS}: machine
.endif
.endif