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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 * V X _ C R T B E G I N *
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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) 2016, 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 /* Common body for the various flavors of vx_crtbegin C sources we need
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33 to perform eh frame registration/deregistration in various
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34 circumstances. #includers should define CDTOR_VISIBILITY. */
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35
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36 #include "tconfig.h"
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37 #include "tsystem.h"
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38 #include "coretypes.h"
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39 #include "tm.h"
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40 #include "unwind-dw2-fde.h"
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41
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131
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42 /* Pick names that the VxWorks muncher will get if involved and leave the
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43 symbols with public visibility. Hiding by default is pointless and even
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44 problematic in some configurations. When the presence of these
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45 constructors is an issue, best is not to include the crt object files at
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46 all. */
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111
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47
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131
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48 #define CTOR_NAME _STI__101___crtbe_register_frame
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49 #define DTOR_NAME _STD__101___crtbe_deregister_frame
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111
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50
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131
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51 void CTOR_NAME (void) CTOR_ATTRIBUTE;
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52 void DTOR_NAME (void) DTOR_ATTRIBUTE;
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111
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53
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54 static const char __EH_FRAME_BEGIN__[]
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55 __attribute__((section(EH_FRAME_SECTION_NAME), aligned(4)))
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56 = { };
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57
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131
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58 void CTOR_NAME (void)
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111
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59 {
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60 static struct object object;
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61 __register_frame_info (__EH_FRAME_BEGIN__, &object);
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62 }
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63
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131
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64 void DTOR_NAME (void)
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111
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65 {
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66 __deregister_frame_info (__EH_FRAME_BEGIN__);
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67 }
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68
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