1 /****************************************************************************
2 * *
3 * GNAT COMPILER COMPONENTS *
4 * *
5 * I N I T I A L I Z E *
6 * *
7 * C Implementation File *
8 * *
9 * Copyright (C) 1992-2015, Free Software Foundation, Inc. *
10 * *
11 * GNAT is free software; you can redistribute it and/or modify it under *
12 * terms of the GNU General Public License as published by the Free Soft- *
13 * ware Foundation; either version 3, or (at your option) any later ver- *
14 * sion. GNAT is distributed in the hope that it will be useful, but WITH- *
15 * OUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY *
16 * or FITNESS FOR A PARTICULAR PURPOSE. *
17 * *
18 * As a special exception under Section 7 of GPL version 3, you are granted *
19 * additional permissions described in the GCC Runtime Library Exception, *
20 * version 3.1, as published by the Free Software Foundation. *
21 * *
22 * You should have received a copy of the GNU General Public License and *
23 * a copy of the GCC Runtime Library Exception along with this program; *
24 * see the files COPYING3 and COPYING.RUNTIME respectively. If not, see *
25 * <http://www.gnu.org/licenses/>. *
26 * *
27 * GNAT was originally developed by the GNAT team at New York University. *
28 * Extensive contributions were provided by Ada Core Technologies Inc. *
29 * *
30 ****************************************************************************/
31
32 /* This unit provides default implementation for __gnat_initialize ()
33 which is called before the elaboration of the partition. It is provided
34 in a separate file/object so that users can replace it easily.
35 The default implementation should be null on most targets. */
36
37 /* The following include is here to meet the published VxWorks requirement
38 that the __vxworks header appear before any other include. */
39 #ifdef __vxworks
40 #include "vxWorks.h"
41 #endif
42
43 #ifdef IN_RTS
44 #include "tconfig.h"
45 #include "tsystem.h"
46 /* We don't have libiberty, so use malloc. */
47 #define xmalloc(S) malloc (S)
48 #define xrealloc(V,S) realloc (V,S)
49 #else
50 #include "config.h"
51 #include "system.h"
52 #endif
53
54 #include "raise.h"
55 #include <fcntl.h>
56
57 #ifdef __cplusplus
58 extern "C" {
59 #endif
60
61 /******************************************/
62 /* __gnat_initialize (NT-mingw32 Version) */
63 /******************************************/
64
65 #if defined (__MINGW32__)
66
67 extern void __gnat_install_SEH_handler (void *);
68
69 void
__gnat_initialize(void * eh ATTRIBUTE_UNUSED)70 __gnat_initialize (void *eh ATTRIBUTE_UNUSED)
71 {
72 /* Note that we do not activate this for the compiler itself to avoid a
73 bootstrap path problem. Older version of gnatbind will generate a call
74 to __gnat_initialize() without argument. Therefore we cannot use eh in
75 this case. It will be possible to remove the following #ifdef at some
76 point. */
77 #ifdef IN_RTS
78 /* Install the Structured Exception handler. */
79 if (eh)
80 __gnat_install_SEH_handler (eh);
81 #endif
82 }
83
84 /******************************************/
85 /* __gnat_initialize (init_float version) */
86 /******************************************/
87
88 #elif defined (__Lynx__) || defined (__FreeBSD__) || defined(__NetBSD__) \
89 || defined (__OpenBSD__) || defined (__DragonFly__)
90
91 void
92 __gnat_initialize (void *eh ATTRIBUTE_UNUSED)
93 {
94 }
95
96 /***************************************/
97 /* __gnat_initialize (VxWorks Version) */
98 /***************************************/
99
100 #elif defined(__vxworks)
101
102 void
103 __gnat_initialize (void *eh)
104 {
105 }
106
107 #elif defined(_T_HPUX10) || (!defined(IN_RTS) && defined(_X_HPUX10))
108
109 /************************************************/
110 /* __gnat_initialize (PA-RISC HP-UX 10 Version) */
111 /************************************************/
112
113 extern void __main (void);
114
115 void
116 __gnat_initialize (void *eh ATTRIBUTE_UNUSED)
117 {
118 __main ();
119 }
120
121 #else
122
123 /* For all other versions of GNAT, the initialize routine and handler
124 installation do nothing */
125
126 /***************************************/
127 /* __gnat_initialize (Default Version) */
128 /***************************************/
129
130 void
131 __gnat_initialize (void *eh ATTRIBUTE_UNUSED)
132 {
133 }
134 #endif
135
136 #ifdef __cplusplus
137 }
138 #endif
139