Subversion Repositories openrisc_2011-10-31

# (C) Copyright IBM Corp. 2005, 2006

#

# All rights reserved.

#

# Redistribution and use in source and binary forms, with or without

# modification, are permitted provided that the following conditions are met:

#

#     * Redistributions of source code must retain the above copyright notice,

# this list of conditions and the following disclaimer.

#     * Redistributions in binary form must reproduce the above copyright

# notice, this list of conditions and the following disclaimer in the

# documentation and/or other materials provided with the distribution.

#     * Neither the name of IBM nor the names of its contributors may be

# used to endorse or promote products derived from this software without

# specific prior written permission.

#

# THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"

# AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE

# IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE

# ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE

# LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR

# CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF

# SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS

# INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN

# CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)

# ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE

# POSSIBILITY OF SUCH DAMAGE.

#

# This file just makes sure that the .fini and .init sections do in

# fact return.  Users may put any desired instructions in those sections.

# This file is the last thing linked into any executable.

        # Note - this macro is complimented by the FUNC_START macro

        # in crti.S.  If you change this macro you must also change

        # that macro match.

        #

        # Note - we do not try any fancy optimisations of the return

        # sequences here, it is just not worth it.  Instead keep things

        # simple.  The link register is restored and then the correct

        # function return instruction is performed.

.macro FUNC_END

        ai      $sp, $sp, 32

        lqd     $lr, 16($sp)

        bi      $lr

.endm

        .file           "crtn.S"

        .section        ".init"

        FUNC_END

        .section        ".fini"

        FUNC_END

        # To ensure nothing is linked at address 0, provide a dummy

        # .interrupt section.  This is in crtn.S to make sure any

        # user-provided real .interrupt section will get linked

        # in front of this dummy.

        .section        ".interrupt","ax"

        .align 2

        heq $0,$0

# end of crtn.S