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1 /* Copyright (C) 2000, 2001, 2003, 2005, 2009 Free Software Foundation, Inc.
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2 Contributed by Jes Sorensen, <Jes.Sorensen@cern.ch>
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3
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4 This file is part of GCC.
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5
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6 GCC is free software; you can redistribute it and/or modify
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7 it under the terms of the GNU General Public License as published by
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8 the Free Software Foundation; either version 3, or (at your option)
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9 any later version.
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10
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11 GCC is distributed in the hope that it will be useful,
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12 but WITHOUT ANY WARRANTY; without even the implied warranty of
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13 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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14 GNU 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 #include "auto-host.h"
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26
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27 .section .ctors,"aw","progbits"
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28 .align 8
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29 __CTOR_END__:
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30 data8 0
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31
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32 .section .dtors,"aw","progbits"
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33 .align 8
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34 __DTOR_END__:
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35 data8 0
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36
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37 .section .jcr,"aw","progbits"
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38 .align 8
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39 __JCR_END__:
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40 data8 0
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41
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42 #ifdef HAVE_INITFINI_ARRAY
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43 .global __do_global_ctors_aux
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44 .hidden __do_global_ctors_aux
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45 #else /* !HAVE_INITFINI_ARRAY */
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46 /*
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47 * Fragment of the ELF _init routine that invokes our dtor cleanup.
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48 *
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49 * We make the call by indirection, because in large programs the
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50 * .fini and .init sections are not in range of the destination, and
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51 * we cannot allow the linker to insert a stub at the end of this
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52 * fragment of the _fini function. Further, Itanium does not implement
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53 * the long branch instructions, and we do not wish every program to
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54 * trap to the kernel for emulation.
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55 *
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56 * Note that we require __do_global_ctors_aux to preserve the GP,
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57 * so that the next fragment in .fini gets the right value.
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58 */
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59 .section .init,"ax","progbits"
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60 { .mlx
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61 movl r2 = @pcrel(__do_global_ctors_aux - 16)
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62 }
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63 { .mii
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64 mov r3 = ip
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65 ;;
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66 add r2 = r2, r3
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67 ;;
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68 }
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69 { .mib
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70 mov b6 = r2
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71 br.call.sptk.many b0 = b6
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72 ;;
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73 }
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74 #endif /* !HAVE_INITFINI_ARRAY */
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75
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76 .text
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77 .align 32
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78 .proc __do_global_ctors_aux
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79 __do_global_ctors_aux:
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80 .prologue
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81 /*
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82 for (loc0 = __CTOR_END__-1; *p != -1; --p)
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83 (*p) ();
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84 */
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85 .save ar.pfs, r34
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86 alloc loc2 = ar.pfs, 0, 5, 0, 0
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87 movl loc0 = @gprel(__CTOR_END__ - 8)
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88 ;;
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89
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90 add loc0 = loc0, gp
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91 ;;
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92 ld8 loc3 = [loc0], -8
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93 .save rp, loc1
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94 mov loc1 = rp
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95 .body
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96 ;;
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97
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98 cmp.eq p6, p0 = -1, loc3
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99 mov loc4 = gp
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100 (p6) br.cond.spnt.few .exit
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101
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102 .loop: ld8 r15 = [loc3], 8
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103 ;;
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104 ld8 gp = [loc3]
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105 mov b6 = r15
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106
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107 ld8 loc3 = [loc0], -8
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108 nop 0
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109 br.call.sptk.many rp = b6
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110 ;;
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111
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112 cmp.ne p6, p0 = -1, loc3
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113 nop 0
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114 (p6) br.cond.sptk.few .loop
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115
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116 .exit: mov gp = loc3
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117 mov rp = loc1
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118 mov ar.pfs = loc2
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119
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120 br.ret.sptk.many rp
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121 .endp __do_global_ctors_aux
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