| 1 | # (C) Copyright IBM Corp. 2005, 2006 |
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| 2 | # |
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| 3 | # All rights reserved. |
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| 4 | # |
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| 5 | # Redistribution and use in source and binary forms, with or without |
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| 6 | # modification, are permitted provided that the following conditions are met: |
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| 7 | # |
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| 8 | # * Redistributions of source code must retain the above copyright notice, |
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| 9 | # this list of conditions and the following disclaimer. |
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| 10 | # * Redistributions in binary form must reproduce the above copyright |
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| 11 | # notice, this list of conditions and the following disclaimer in the |
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| 12 | # documentation and/or other materials provided with the distribution. |
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| 13 | # * Neither the name of IBM nor the names of its contributors may be |
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| 14 | # used to endorse or promote products derived from this software without |
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| 15 | # specific prior written permission. |
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| 16 | # |
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| 17 | # THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" |
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| 18 | # AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE |
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| 19 | # IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE |
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| 20 | # ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE |
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| 21 | # LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR |
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| 22 | # CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF |
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| 23 | # SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS |
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| 24 | # INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN |
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| 25 | # CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) |
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| 26 | # ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE |
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| 27 | # POSSIBILITY OF SUCH DAMAGE. |
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| 28 | # |
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| 29 | # This file just makes sure that the .fini and .init sections do in |
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| 30 | # fact return. Users may put any desired instructions in those sections. |
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| 31 | # This file is the last thing linked into any executable. |
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| 32 | |
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| 33 | # Note - this macro is complimented by the FUNC_START macro |
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| 34 | # in crti.S. If you change this macro you must also change |
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| 35 | # that macro match. |
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| 36 | # |
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| 37 | # Note - we do not try any fancy optimisations of the return |
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| 38 | # sequences here, it is just not worth it. Instead keep things |
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| 39 | # simple. The link register is restored and then the correct |
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| 40 | # function return instruction is performed. |
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| 41 | .macro FUNC_END |
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| 42 | ai $sp, $sp, 32 |
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| 43 | lqd $lr, 16($sp) |
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| 44 | bi $lr |
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| 45 | .endm |
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| 46 | .file "crtn.S" |
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| 47 | |
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| 48 | .section ".init" |
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| 49 | |
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| 50 | FUNC_END |
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| 51 | |
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| 52 | .section ".fini" |
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| 53 | |
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| 54 | FUNC_END |
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| 55 | |
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| 56 | # To ensure nothing is linked at address 0, provide a dummy |
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| 57 | # .interrupt section. This is in crtn.S to make sure any |
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| 58 | # user-provided real .interrupt section will get linked |
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| 59 | # in front of this dummy. |
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| 60 | .section ".interrupt","ax" |
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| 61 | .align 2 |
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| 62 | heq $0,$0 |
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| 63 | |
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| 64 | # end of crtn.S |
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