1 | /* |
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2 | * Copyright (c) 2015, 2016 embedded brains GmbH. All rights reserved. |
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3 | * |
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4 | * embedded brains GmbH |
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5 | * Dornierstr. 4 |
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6 | * 82178 Puchheim |
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7 | * Germany |
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8 | * <rtems@embedded-brains.de> |
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9 | * |
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10 | * The license and distribution terms for this file may be |
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11 | * found in the file LICENSE in this distribution or at |
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12 | * http://www.rtems.org/license/LICENSE. |
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13 | */ |
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14 | |
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15 | #ifndef _RTEMS_LINKERSET_H |
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16 | #define _RTEMS_LINKERSET_H |
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17 | |
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18 | #include <rtems/score/basedefs.h> |
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19 | |
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20 | #ifdef __cplusplus |
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21 | extern "C" { |
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22 | #endif /* __cplusplus */ |
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23 | |
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24 | #define _LINKER_SET_BEGIN( set ) \ |
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25 | _Linker_set_##set##_begin |
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26 | |
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27 | #define _LINKER_SET_END( set ) \ |
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28 | _Linker_set_##set##_end |
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29 | |
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30 | #define RTEMS_LINKER_SET_ASSIGN_BEGIN( set, item ) \ |
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31 | do { \ |
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32 | item = _LINKER_SET_BEGIN( set ); \ |
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33 | RTEMS_OBFUSCATE_VARIABLE( item ); \ |
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34 | } while ( 0 ) |
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35 | |
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36 | #define RTEMS_LINKER_SET_ASSIGN_END( set, item ) \ |
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37 | do { \ |
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38 | item = _LINKER_SET_END( set ); \ |
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39 | RTEMS_OBFUSCATE_VARIABLE( item ); \ |
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40 | } while ( 0 ) |
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41 | |
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42 | #define RTEMS_LINKER_SET_SIZE( set ) \ |
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43 | ( (size_t) ( _Linker_set_##set##_end - _Linker_set_##set##_begin ) ) |
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44 | |
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45 | #define RTEMS_LINKER_ROSET_DECLARE( set, type ) \ |
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46 | extern type const _LINKER_SET_BEGIN( set )[0]; \ |
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47 | extern type const _LINKER_SET_END( set )[0] |
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48 | |
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49 | #define RTEMS_LINKER_ROSET( set, type ) \ |
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50 | type const _LINKER_SET_BEGIN( set )[0] \ |
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51 | RTEMS_SECTION( ".rtemsroset." #set ".begin" ) RTEMS_USED; \ |
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52 | type const _LINKER_SET_END( set )[0] \ |
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53 | RTEMS_SECTION( ".rtemsroset." #set ".end" ) RTEMS_USED |
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54 | |
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55 | #define RTEMS_LINKER_ROSET_ITEM_DECLARE( set, type, item ) \ |
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56 | extern type const _Linker_set_##set##_##item |
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57 | |
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58 | #define RTEMS_LINKER_ROSET_ITEM_REFERENCE( set, type, item ) \ |
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59 | static type const * const _Set_reference_##set##_##item \ |
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60 | RTEMS_SECTION( ".rtemsroset.reference" ) RTEMS_USED = \ |
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61 | &_Linker_set_##set##_##item |
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62 | |
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63 | #define RTEMS_LINKER_ROSET_ITEM_ORDERED( set, type, item, order ) \ |
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64 | type const _Linker_set_##set##_##item \ |
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65 | RTEMS_SECTION( ".rtemsroset." #set ".content.0." RTEMS_XSTRING( order ) ) \ |
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66 | RTEMS_USED |
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67 | |
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68 | #define RTEMS_LINKER_ROSET_ITEM( set, type, item ) \ |
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69 | type const _Linker_set_##set##_##item \ |
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70 | RTEMS_SECTION( ".rtemsroset." #set ".content.1" ) RTEMS_USED |
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71 | |
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72 | #define RTEMS_LINKER_ROSET_CONTENT( set, decl ) \ |
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73 | decl \ |
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74 | RTEMS_SECTION( ".rtemsroset." #set ".content" ) |
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75 | |
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76 | #define RTEMS_LINKER_RWSET_DECLARE( set, type ) \ |
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77 | extern type _LINKER_SET_BEGIN( set )[0]; \ |
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78 | extern type _LINKER_SET_END( set )[0] |
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79 | |
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80 | #define RTEMS_LINKER_RWSET( set, type ) \ |
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81 | type _LINKER_SET_BEGIN( set )[0] \ |
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82 | RTEMS_SECTION( ".rtemsrwset." #set ".begin" ) RTEMS_USED; \ |
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83 | type _LINKER_SET_END( set )[0] \ |
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84 | RTEMS_SECTION( ".rtemsrwset." #set ".end" ) RTEMS_USED |
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85 | |
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86 | #define RTEMS_LINKER_RWSET_ITEM_DECLARE( set, type, item ) \ |
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87 | extern type _Linker_set_##set##_##item |
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88 | |
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89 | /* |
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90 | * The .rtemsroset is here not a typo. We must ensure that the references are |
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91 | * not a victim of the garbage collection of the linker. Thus, we place them |
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92 | * in a dedicated area of the RTEMS read-only linker set section. |
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93 | */ |
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94 | #define RTEMS_LINKER_RWSET_ITEM_REFERENCE( set, type, item ) \ |
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95 | static type * const _Set_reference_##set##_##item \ |
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96 | RTEMS_SECTION( ".rtemsroset.reference" ) RTEMS_USED = \ |
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97 | &_Linker_set_##set##_##item |
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98 | |
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99 | #define RTEMS_LINKER_RWSET_ITEM_ORDERED( set, type, item, order ) \ |
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100 | type _Linker_set_##set##_##item \ |
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101 | RTEMS_SECTION( ".rtemsrwset." #set ".content.0." RTEMS_XSTRING( order ) ) \ |
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102 | RTEMS_USED |
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103 | |
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104 | #define RTEMS_LINKER_RWSET_ITEM( set, type, item ) \ |
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105 | type _Linker_set_##set##_##item \ |
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106 | RTEMS_SECTION( ".rtemsrwset." #set ".content.1" ) RTEMS_USED |
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107 | |
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108 | #define RTEMS_LINKER_RWSET_CONTENT( set, decl ) \ |
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109 | decl \ |
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110 | RTEMS_SECTION( ".rtemsrwset." #set ".content" ) |
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111 | |
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112 | #ifdef __cplusplus |
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113 | } |
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114 | #endif /* __cplusplus */ |
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115 | |
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116 | #endif /* _RTEMS_LINKERSET_H */ |
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