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