# (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