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1 /****************************************************************************
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2 * *
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3 * GNAT COMPILER COMPONENTS *
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4 * *
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5 * I N I T I A L I Z E *
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6 * *
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7 * C Implementation File *
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8 * *
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9 * Copyright (C) 1992-2017, Free Software Foundation, Inc. *
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10 * *
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11 * GNAT is free software; you can redistribute it and/or modify it under *
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12 * terms of the GNU General Public License as published by the Free Soft- *
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13 * ware Foundation; either version 3, or (at your option) any later ver- *
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14 * sion. GNAT is distributed in the hope that it will be useful, but WITH- *
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15 * OUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY *
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16 * or FITNESS FOR A PARTICULAR PURPOSE. *
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17 * *
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18 * As a special exception under Section 7 of GPL version 3, you are granted *
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19 * additional permissions described in the GCC Runtime Library Exception, *
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20 * version 3.1, as published by the Free Software Foundation. *
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21 * *
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22 * You should have received a copy of the GNU General Public License and *
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23 * a copy of the GCC Runtime Library Exception along with this program; *
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24 * see the files COPYING3 and COPYING.RUNTIME respectively. If not, see *
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25 * <http://www.gnu.org/licenses/>. *
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26 * *
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27 * GNAT was originally developed by the GNAT team at New York University. *
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28 * Extensive contributions were provided by Ada Core Technologies Inc. *
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29 * *
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30 ****************************************************************************/
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31
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32 /* This unit provides default implementation for __gnat_initialize ()
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33 which is called before the elaboration of the partition. It is provided
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34 in a separate file/object so that users can replace it easily.
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35 The default implementation should be null on most targets. */
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36
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37 /* The following include is here to meet the published VxWorks requirement
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38 that the __vxworks header appear before any other include. */
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39 #ifdef __vxworks
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40 #include "vxWorks.h"
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41 #endif
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42
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43 #ifdef IN_RTS
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44 #include "tconfig.h"
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45 #include "tsystem.h"
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46 /* We don't have libiberty, so use malloc. */
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47 #define xmalloc(S) malloc (S)
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48 #define xrealloc(V,S) realloc (V,S)
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49 #else
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50 #include "config.h"
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51 #include "system.h"
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52 #endif
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53
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54 #include "raise.h"
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55 #include <fcntl.h>
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56
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57 #ifdef __cplusplus
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58 extern "C" {
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59 #endif
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60
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61 /******************************************/
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62 /* __gnat_initialize (NT-mingw32 Version) */
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63 /******************************************/
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64
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65 #if defined (__MINGW32__)
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66
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67 extern void __gnat_install_SEH_handler (void *);
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68
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69 void
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70 __gnat_initialize (void *eh ATTRIBUTE_UNUSED)
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71 {
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72 /* Note that we do not activate this for the compiler itself to avoid a
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73 bootstrap path problem. Older version of gnatbind will generate a call
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74 to __gnat_initialize() without argument. Therefore we cannot use eh in
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75 this case. It will be possible to remove the following #ifdef at some
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76 point. */
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77 #ifdef IN_RTS
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78 /* Install the Structured Exception handler. */
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79 if (eh)
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80 __gnat_install_SEH_handler (eh);
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81 #endif
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82 }
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83
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84 /******************************************/
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85 /* __gnat_initialize (init_float version) */
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86 /******************************************/
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87
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88 #elif defined (__Lynx__) || defined (__FreeBSD__) || defined(__NetBSD__) \
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89 || defined (__OpenBSD__) || defined (__DragonFly__)
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90
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91 void
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92 __gnat_initialize (void *eh ATTRIBUTE_UNUSED)
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93 {
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94 }
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95
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96 /***************************************/
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97 /* __gnat_initialize (VxWorks Version) */
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98 /***************************************/
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99
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100 #elif defined(__vxworks)
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101
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102 void
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103 __gnat_initialize (void *eh)
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104 {
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105 }
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106
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107 #elif defined(_T_HPUX10) || (!defined(IN_RTS) && defined(_X_HPUX10))
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108
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109 /************************************************/
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110 /* __gnat_initialize (PA-RISC HP-UX 10 Version) */
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111 /************************************************/
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112
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113 extern void __main (void);
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114
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115 void
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116 __gnat_initialize (void *eh ATTRIBUTE_UNUSED)
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117 {
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118 __main ();
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119 }
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120
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121 #else
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122
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123 /* For all other versions of GNAT, the initialize routine and handler
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124 installation do nothing */
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125
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126 /***************************************/
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127 /* __gnat_initialize (Default Version) */
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128 /***************************************/
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129
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130 void
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131 __gnat_initialize (void *eh ATTRIBUTE_UNUSED)
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132 {
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133 }
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134 #endif
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135
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136 #ifdef __cplusplus
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137 }
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138 #endif
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