[28352fae] | 1 | /** |
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[11874561] | 2 | * @file rtems/system.h |
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[ac7d5ef0] | 3 | * |
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| 4 | * This include file contains information that is included in every |
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| 5 | * function in the executive. This must be the first include file |
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| 6 | * included in all internal RTEMS files. |
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[baff4da] | 7 | */ |
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| 8 | |
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| 9 | /* |
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[7d12442c] | 10 | * COPYRIGHT (c) 1989-2007. |
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[ac7d5ef0] | 11 | * On-Line Applications Research Corporation (OAR). |
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| 12 | * |
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[98e4ebf5] | 13 | * The license and distribution terms for this file may be |
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| 14 | * found in the file LICENSE in this distribution or at |
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[dd687d97] | 15 | * http://www.rtems.com/license/LICENSE. |
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[ac7d5ef0] | 16 | * |
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| 17 | * $Id$ |
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| 18 | */ |
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| 19 | |
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[092f142a] | 20 | #ifndef _RTEMS_SYSTEM_H |
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| 21 | #define _RTEMS_SYSTEM_H |
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[ac7d5ef0] | 22 | |
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| 23 | #ifdef __cplusplus |
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| 24 | extern "C" { |
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| 25 | #endif |
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| 26 | |
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| 27 | /* |
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[a0ed4ed] | 28 | * The cpu options include file defines all cpu dependent |
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[541dfb2] | 29 | * parameters for this build of RTEMS. It must be included |
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| 30 | * first so the basic macro definitions are in place. |
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[ac7d5ef0] | 31 | */ |
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[61129cc5] | 32 | #include <rtems/score/cpuopts.h> |
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| 33 | |
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[6a07436] | 34 | /** |
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[b5c50309] | 35 | * The following ensures that all data is declared in the space |
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[c627b2a3] | 36 | * of the initialization routine for either the Initialization Manager |
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[a0ed4ed] | 37 | * or the initialization file for the appropriate API. It is |
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[c627b2a3] | 38 | * referenced as "external" in every other file. |
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[ac7d5ef0] | 39 | */ |
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[c627b2a3] | 40 | #ifdef SCORE_INIT |
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| 41 | #undef SCORE_EXTERN |
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| 42 | #define SCORE_EXTERN |
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[ac7d5ef0] | 43 | #else |
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[c627b2a3] | 44 | #undef SCORE_EXTERN |
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| 45 | #define SCORE_EXTERN extern |
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| 46 | #endif |
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| 47 | |
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[28352fae] | 48 | /** |
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[6a07436] | 49 | * The following ensures that all data is declared in the space |
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| 50 | * of the initialization routine for either the Initialization Manager |
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| 51 | * or the initialization file for the appropriate API. It is |
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| 52 | * referenced as "external" in every other file. |
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| 53 | */ |
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[c627b2a3] | 54 | #ifdef SAPI_INIT |
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| 55 | #undef SAPI_EXTERN |
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| 56 | #define SAPI_EXTERN |
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| 57 | #else |
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| 58 | #undef SAPI_EXTERN |
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| 59 | #define SAPI_EXTERN extern |
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| 60 | #endif |
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| 61 | |
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[28352fae] | 62 | /** |
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[6a07436] | 63 | * The following ensures that all data is declared in the space |
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| 64 | * of the initialization routine for either the Initialization Manager |
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| 65 | * or the initialization file for the appropriate API. It is |
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| 66 | * referenced as "external" in every other file. |
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| 67 | */ |
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[c627b2a3] | 68 | #ifdef RTEMS_API_INIT |
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| 69 | #undef RTEMS_EXTERN |
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| 70 | #define RTEMS_EXTERN |
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| 71 | #else |
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| 72 | #undef RTEMS_EXTERN |
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| 73 | #define RTEMS_EXTERN extern |
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| 74 | #endif |
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| 75 | |
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[28352fae] | 76 | /** |
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[6a07436] | 77 | * The following ensures that all data is declared in the space |
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| 78 | * of the initialization routine for either the Initialization Manager |
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| 79 | * or the initialization file for the appropriate API. It is |
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| 80 | * referenced as "external" in every other file. |
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| 81 | */ |
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[c627b2a3] | 82 | #ifdef POSIX_API_INIT |
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| 83 | #undef POSIX_EXTERN |
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| 84 | #define POSIX_EXTERN |
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| 85 | #else |
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| 86 | #undef POSIX_EXTERN |
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| 87 | #define POSIX_EXTERN extern |
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[ac7d5ef0] | 88 | #endif |
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| 89 | |
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[28352fae] | 90 | /** |
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[6a07436] | 91 | * The following ensures that all data is declared in the space |
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| 92 | * of the initialization routine for either the Initialization Manager |
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| 93 | * or the initialization file for the appropriate API. It is |
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| 94 | * referenced as "external" in every other file. |
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| 95 | */ |
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[352c9b2] | 96 | #ifdef ITRON_API_INIT |
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| 97 | #undef ITRON_EXTERN |
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| 98 | #define ITRON_EXTERN |
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| 99 | #else |
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| 100 | #undef ITRON_EXTERN |
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| 101 | #define ITRON_EXTERN extern |
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| 102 | #endif |
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| 103 | |
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[6a07436] | 104 | /** |
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[ac7d5ef0] | 105 | * The following (in conjunction with compiler arguments) are used |
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| 106 | * to choose between the use of static inline functions and macro |
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| 107 | * functions. The static inline implementation allows better |
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| 108 | * type checking with no cost in code size or execution speed. |
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| 109 | */ |
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[04dba49] | 110 | #ifdef __GNUC__ |
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[503dc058] | 111 | # define RTEMS_INLINE_ROUTINE static __inline__ |
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[ac7d5ef0] | 112 | #else |
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[04dba49] | 113 | # define RTEMS_INLINE_ROUTINE static inline |
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[ac7d5ef0] | 114 | #endif |
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| 115 | |
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[f0ad529] | 116 | /** |
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| 117 | * The following macro is a compiler specific way to ensure that memory |
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| 118 | * writes are not reordered around certian points. This specifically can |
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| 119 | * impact interrupt disable and thread dispatching critical sections. |
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| 120 | */ |
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| 121 | #ifdef __GNUC__ |
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| 122 | #define RTEMS_COMPILER_MEMORY_BARRIER() asm volatile("" ::: "memory") |
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| 123 | #else |
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| 124 | #define RTEMS_COMPILER_MEMORY_BARRIER() |
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| 125 | #endif |
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| 126 | |
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[7d12442c] | 127 | /** |
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| 128 | * The following macro is a compiler specific way to indicate that |
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| 129 | * the method will NOT return to the caller. This can assist the |
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| 130 | * compiler in code generation and avoid unreachable paths. This |
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| 131 | * can impact the code generated following calls to |
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| 132 | * rtems_fatal_error_occurred and _Internal_error_Occurred. |
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| 133 | */ |
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| 134 | #ifdef __GNUC__ |
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| 135 | #define RTEMS_COMPILER_NO_RETURN_ATTRIBUTE \ |
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| 136 | __attribute__ ((noreturn)) |
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| 137 | #else |
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| 138 | #define RTEMS_COMPILER_NO_RETURN_ATTRIBUTE |
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| 139 | #endif |
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| 140 | |
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[c27951f2] | 141 | /** |
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| 142 | * Instructs the compiler to issue a warning whenever a variable or function |
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| 143 | * with this attribute will be used. |
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| 144 | */ |
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| 145 | #ifdef __GNUC__ |
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| 146 | #define RTEMS_COMPILER_DEPRECATED_ATTRIBUTE \ |
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| 147 | __attribute__ ((deprecated)) |
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| 148 | #else |
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| 149 | #define RTEMS_COMPILER_DEPRECATED_ATTRIBUTE |
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| 150 | #endif |
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| 151 | |
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[ba41dfd] | 152 | #ifdef RTEMS_POSIX_API |
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[6a07436] | 153 | /** The following is used by the POSIX implementation to catch bad paths. */ |
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[b5c50309] | 154 | int POSIX_NOT_IMPLEMENTED( void ); |
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| 155 | #endif |
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| 156 | |
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[ac7d5ef0] | 157 | /* |
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| 158 | * Include a base set of files. |
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| 159 | */ |
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| 160 | |
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[6a07436] | 161 | /** |
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[ac7d5ef0] | 162 | * XXX: Eventually proc_ptr needs to disappear!!! |
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| 163 | */ |
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| 164 | typedef void * proc_ptr; |
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| 165 | |
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[f44f0c7] | 166 | #include <stddef.h> |
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[ac7d5ef0] | 167 | |
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| 168 | #if !defined( TRUE ) || (TRUE != 1) |
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[6a07436] | 169 | /** Boolean constant TRUE */ |
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[ac7d5ef0] | 170 | #undef TRUE |
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| 171 | #define TRUE (1) |
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| 172 | #endif |
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| 173 | |
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| 174 | #if !defined( FALSE ) || (FALSE != 0) |
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[ec73a753] | 175 | /** Boolean constant FALSE */ |
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[ac7d5ef0] | 176 | #undef FALSE |
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| 177 | #define FALSE (0) |
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| 178 | #endif |
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| 179 | |
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[1cb54d1f] | 180 | #include <stdint.h> |
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[01a5f6b2] | 181 | #include <rtems/score/cpu.h> /* processor specific information */ |
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| 182 | |
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[28352fae] | 183 | /** |
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[6a07436] | 184 | * This macro is used to obtain the offset of a field in a structure. |
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| 185 | */ |
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[b06e68ef] | 186 | #define RTEMS_offsetof(type, field) \ |
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[a5b6cdd] | 187 | ((uint32_t) &(((type *) 0)->field)) |
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[b06e68ef] | 188 | |
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[6a07436] | 189 | /** |
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[ac7d5ef0] | 190 | * The following is the extern for the RTEMS version string. |
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[6a07436] | 191 | * |
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| 192 | * @note The contents of this string are CPU specific. |
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[ac7d5ef0] | 193 | */ |
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[6a07436] | 194 | extern const char _RTEMS_version[]; |
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[ac7d5ef0] | 195 | |
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[6a07436] | 196 | /** |
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| 197 | * The following is the extern for the RTEMS copyright string. |
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| 198 | */ |
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| 199 | extern const char _Copyright_Notice[]; |
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[ac7d5ef0] | 200 | |
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[6a07436] | 201 | /** This macro defines the maximum length of a Classic API name. */ |
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[df49c60] | 202 | #define RTEMS_MAXIMUM_NAME_LENGTH sizeof(rtems_name) |
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[3235ad9] | 203 | |
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[ac7d5ef0] | 204 | #ifdef __cplusplus |
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| 205 | } |
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| 206 | #endif |
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| 207 | |
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| 208 | #endif |
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| 209 | /* end of include file */ |
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