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1 # crti.s for sysv4
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2
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3 # Copyright (C) 1996, 2008, 2009 Free Software Foundation, Inc.
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4 # Written By Michael Meissner
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5 #
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6 # This file is free software; you can redistribute it and/or modify it
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7 # under the terms of the GNU General Public License as published by the
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8 # Free Software Foundation; either version 3, or (at your option) any
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9 # later version.
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10 #
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11 # This file is distributed in the hope that it will be useful, but
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12 # WITHOUT ANY WARRANTY; without even the implied warranty of
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13 # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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14 # General Public License for more details.
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15 #
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16 # Under Section 7 of GPL version 3, you are granted additional
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17 # permissions described in the GCC Runtime Library Exception, version
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18 # 3.1, as published by the Free Software Foundation.
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19 #
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20 # You should have received a copy of the GNU General Public License and
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21 # a copy of the GCC Runtime Library Exception along with this program;
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22 # see the files COPYING3 and COPYING.RUNTIME respectively. If not, see
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23 # <http://www.gnu.org/licenses/>.
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24
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25 # This file just supplies labeled starting points for the .got* and other
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26 # special sections. It is linked in first before other modules.
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27
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28 .ident "GNU C scrti.s"
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29
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30 #ifndef __powerpc64__
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31 # Start of .text
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32 .section ".text"
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33 .globl _ex_text0
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34 _ex_text0:
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35
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36 # Exception range
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37 .section ".exception_ranges","aw"
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38 .globl _ex_range0
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39 _ex_range0:
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40
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41 # List of C++ constructors
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42 .section ".ctors","aw"
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43 .globl __CTOR_LIST__
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44 .type __CTOR_LIST__,@object
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45 __CTOR_LIST__:
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46
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47 # List of C++ destructors
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48 .section ".dtors","aw"
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49 .globl __DTOR_LIST__
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50 .type __DTOR_LIST__,@object
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51 __DTOR_LIST__:
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52
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53 # Head of _init function used for static constructors
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54 .section ".init","ax"
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55 .align 2
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56 .globl _init
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57 .type _init,@function
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58 _init: stwu %r1,-16(%r1)
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59 mflr %r0
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60 stw %r31,12(%r1)
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61 stw %r0,16(%r1)
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62
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63 bl _GLOBAL_OFFSET_TABLE_-4 # get the GOT address
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64 mflr %r31
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65
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66 # lwz %r3,_ex_shared0@got(%r31)
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67 # lwz %r4,-8(%r3) # _ex_register or 0
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68 # cmpi %cr0,%r4,0
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69 # beq .Lno_reg
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70 # mtlr %r4
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71 # blrl
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72 #.Lno_reg:
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73
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74 # Head of _fini function used for static destructors
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75 .section ".fini","ax"
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76 .align 2
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77 .globl _fini
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78 .type _fini,@function
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79 _fini: stwu %r1,-16(%r1)
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80 mflr %r0
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81 stw %r31,12(%r1)
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82 stw %r0,16(%r1)
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83
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84 bl _GLOBAL_OFFSET_TABLE_-4 # get the GOT address
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85 mflr %r31
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86
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87 # _environ and its evil twin environ, pointing to the environment
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88 .section ".sdata","aw"
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89 .align 2
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90 .globl _environ
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91 .space 4
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92 .weak environ
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93 .set environ,_environ
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94 #endif
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