#
# CDDL HEADER START
#
# The contents of this file are subject to the terms of the
# Common Development and Distribution License, Version 1.0 only
# (the "License").  You may not use this file except in compliance
# with the License.
#
# You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE
# or http://www.opensolaris.org/os/licensing.
# See the License for the specific language governing permissions
# and limitations under the License.
#
# When distributing Covered Code, include this CDDL HEADER in each
# file and include the License file at usr/src/OPENSOLARIS.LICENSE.
# If applicable, add the following below this CDDL HEADER, with the
# fields enclosed by brackets "[]" replaced with your own identifying
# information: Portions Copyright [yyyy] [name of copyright owner]
#
# CDDL HEADER END
#
#
#ident	"%Z%%M%	%I%	%E% SMI"
#
# Copyright (c) 1996 by Sun Microsystems, Inc.
# All rights reserved.

include		$(SRC)/cmd/sgs/Makefile.sub
#
# CDDL HEADER START
#
# The contents of this file are subject to the terms of the
# Common Development and Distribution License (the "License").
# You may not use this file except in compliance with the License.
#
# You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE
# or http://www.opensolaris.org/os/licensing.
# See the License for the specific language governing permissions
# and limitations under the License.
#
# When distributing Covered Code, include this CDDL HEADER in each
# file and include the License file at usr/src/OPENSOLARIS.LICENSE.
# If applicable, add the following below this CDDL HEADER, with the
# fields enclosed by brackets "[]" replaced with your own identifying
# information: Portions Copyright [yyyy] [name of copyright owner]
#
# CDDL HEADER END
#
#
# Copyright 2006 Sun Microsystems, Inc.  All rights reserved.
# Use is subject to license terms.
#
# Copyright 2019 OmniOS Community Edition (OmniOSce) Association.
#

LIBRARY=	0@0.a
VERS=		.1

OBJECTS=	0@0.o
CRTI=		pics/crti.o
CRTN=		pics/crtn.o
CRTS=		$(CRTI) $(CRTN)

include		$(SRC)/lib/Makefile.lib

MAPFILES=
ASFLAGS +=	-D_ASM $(CPPFLAGS)
ASFLAGS64 +=	-D_ASM $(CPPFLAGS)
DYNFLAGS +=	$(BLOCAL) $(ZNOVERSION) $(ZINITFIRST)
LDLIBS +=	-lc
BUILD.SO=       $(LD) -o $@ $(GSHARED) $(DYNFLAGS) $(CRTI) $(PICS) $(LDLIBS) $(CRTN)

SRCS=		$(OBJECTS:%.o=../common/%.c)

CLEANFILES +=	$(CRTS)
CLOBBERFILES +=	$(DYNLIB)

ROOTDYNLIB=	$(DYNLIB:%=$(ROOTLIBDIR)/%)
#
# CDDL HEADER START
#
# The contents of this file are subject to the terms of the
# Common Development and Distribution License (the "License").
# You may not use this file except in compliance with the License.
#
# You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE
# or http://www.opensolaris.org/os/licensing.
# See the License for the specific language governing permissions
# and limitations under the License.
#
# When distributing Covered Code, include this CDDL HEADER in each
# file and include the License file at usr/src/OPENSOLARIS.LICENSE.
# If applicable, add the following below this CDDL HEADER, with the
# fields enclosed by brackets "[]" replaced with your own identifying
# information: Portions Copyright [yyyy] [name of copyright owner]
#
# CDDL HEADER END
#
# Copyright 2008 Sun Microsystems, Inc.  All rights reserved.
# Use is subject to license terms.
#
# Copyright 2019 OmniOS Community Edition (OmniOSce) Association.
#

pics/%.o:	../common/%.c
		$(COMPILE.c) -o $@ $<
		$(POST_PROCESS_O)

pics/%.o:	$(CRTSRCS)/%.s
		$(COMPILE.s) $< -o $@
		$(POST_PROCESS_O)

all:		$(DYNLIB)

$(DYNLIB):	pics .WAIT $(CRTS)

include		$(SRC)/lib/Makefile.targ
#
# CDDL HEADER START
#
# The contents of this file are subject to the terms of the
# Common Development and Distribution License, Version 1.0 only
# (the "License").  You may not use this file except in compliance
# with the License.
#
# You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE
# or http://www.opensolaris.org/os/licensing.
# See the License for the specific language governing permissions
# and limitations under the License.
#
# When distributing Covered Code, include this CDDL HEADER in each
# file and include the License file at usr/src/OPENSOLARIS.LICENSE.
# If applicable, add the following below this CDDL HEADER, with the
# fields enclosed by brackets "[]" replaced with your own identifying
# information: Portions Copyright [yyyy] [name of copyright owner]
#
# CDDL HEADER END
#
#
# Copyright 2004 Sun Microsystems, Inc.  All rights reserved.
# Use is subject to license terms.
#

CRTSRCS =	$(SRC)/lib/crt/amd64

include		$(SRC)/cmd/sgs/0@0/Makefile.com

ASFLAGS +=	-D__amd64 $(amd64_ASFLAGS)

.KEEP_STATE:

install:	all $(ROOTLIBDIR64)/$(DYNLIB)

include		$(SRC)/cmd/sgs/0@0/Makefile.targ
include		$(SRC)/Makefile.master.64

/*
 * CDDL HEADER START
 *
 * The contents of this file are subject to the terms of the
 * Common Development and Distribution License, Version 1.0 only
 * (the "License").  You may not use this file except in compliance
 * with the License.
 *
 * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE
 * or http://www.opensolaris.org/os/licensing.
 * See the License for the specific language governing permissions
 * and limitations under the License.
 *
 * When distributing Covered Code, include this CDDL HEADER in each
 * file and include the License file at usr/src/OPENSOLARIS.LICENSE.
 * If applicable, add the following below this CDDL HEADER, with the
 * fields enclosed by brackets "[]" replaced with your own identifying
 * information: Portions Copyright [yyyy] [name of copyright owner]
 *
 * CDDL HEADER END
 */
/*
 *	Copyright (c) 1996 by Sun Microsystems, Inc.
 *
 * Map in a read-only page of zeroes at location zero, for stupid
 * programs that think a null pointer is as good as a null string.
 *
 * Use:
 *	LD_PRELOAD=0@0.so.1 program args ...
 *
 */
/* LINTLIBRARY */

#include <sys/types.h>
#include <sys/mman.h>
#include <fcntl.h>
#include <unistd.h>

#pragma	init(__zero_at_zero)

void
__zero_at_zero()
{
	int fd;

	if ((fd = open("/dev/zero", O_RDWR)) < 0)
		return;
	(void) mmap(0, 1, PROT_READ, MAP_PRIVATE|MAP_FIXED, fd, 0);
	(void) close(fd);
}