1 | /** |
---|
2 | * @file rtems/system.h |
---|
3 | * |
---|
4 | * This include file contains information that is included in every |
---|
5 | * function in the executive. This must be the first include file |
---|
6 | * included in all internal RTEMS files. |
---|
7 | */ |
---|
8 | |
---|
9 | /* |
---|
10 | * COPYRIGHT (c) 1989-2007. |
---|
11 | * On-Line Applications Research Corporation (OAR). |
---|
12 | * |
---|
13 | * The license and distribution terms for this file may be |
---|
14 | * found in the file LICENSE in this distribution or at |
---|
15 | * http://www.rtems.com/license/LICENSE. |
---|
16 | * |
---|
17 | * $Id$ |
---|
18 | */ |
---|
19 | |
---|
20 | #ifndef _RTEMS_SYSTEM_H |
---|
21 | #define _RTEMS_SYSTEM_H |
---|
22 | |
---|
23 | #ifdef __cplusplus |
---|
24 | extern "C" { |
---|
25 | #endif |
---|
26 | |
---|
27 | /* |
---|
28 | * The cpu options include file defines all cpu dependent |
---|
29 | * parameters for this build of RTEMS. It must be included |
---|
30 | * first so the basic macro definitions are in place. |
---|
31 | */ |
---|
32 | #include <rtems/score/cpuopts.h> |
---|
33 | |
---|
34 | /** |
---|
35 | * The following ensures that all data is declared in the space |
---|
36 | * of the initialization routine for either the Initialization Manager |
---|
37 | * or the initialization file for the appropriate API. It is |
---|
38 | * referenced as "external" in every other file. |
---|
39 | */ |
---|
40 | #ifdef SCORE_INIT |
---|
41 | #undef SCORE_EXTERN |
---|
42 | #define SCORE_EXTERN |
---|
43 | #else |
---|
44 | #undef SCORE_EXTERN |
---|
45 | #define SCORE_EXTERN extern |
---|
46 | #endif |
---|
47 | |
---|
48 | /** |
---|
49 | * The following ensures that all data is declared in the space |
---|
50 | * of the initialization routine for either the Initialization Manager |
---|
51 | * or the initialization file for the appropriate API. It is |
---|
52 | * referenced as "external" in every other file. |
---|
53 | */ |
---|
54 | #ifdef SAPI_INIT |
---|
55 | #undef SAPI_EXTERN |
---|
56 | #define SAPI_EXTERN |
---|
57 | #else |
---|
58 | #undef SAPI_EXTERN |
---|
59 | #define SAPI_EXTERN extern |
---|
60 | #endif |
---|
61 | |
---|
62 | /** |
---|
63 | * The following ensures that all data is declared in the space |
---|
64 | * of the initialization routine for either the Initialization Manager |
---|
65 | * or the initialization file for the appropriate API. It is |
---|
66 | * referenced as "external" in every other file. |
---|
67 | */ |
---|
68 | #ifdef RTEMS_API_INIT |
---|
69 | #undef RTEMS_EXTERN |
---|
70 | #define RTEMS_EXTERN |
---|
71 | #else |
---|
72 | #undef RTEMS_EXTERN |
---|
73 | #define RTEMS_EXTERN extern |
---|
74 | #endif |
---|
75 | |
---|
76 | /** |
---|
77 | * The following ensures that all data is declared in the space |
---|
78 | * of the initialization routine for either the Initialization Manager |
---|
79 | * or the initialization file for the appropriate API. It is |
---|
80 | * referenced as "external" in every other file. |
---|
81 | */ |
---|
82 | #ifdef POSIX_API_INIT |
---|
83 | #undef POSIX_EXTERN |
---|
84 | #define POSIX_EXTERN |
---|
85 | #else |
---|
86 | #undef POSIX_EXTERN |
---|
87 | #define POSIX_EXTERN extern |
---|
88 | #endif |
---|
89 | |
---|
90 | /** |
---|
91 | * The following ensures that all data is declared in the space |
---|
92 | * of the initialization routine for either the Initialization Manager |
---|
93 | * or the initialization file for the appropriate API. It is |
---|
94 | * referenced as "external" in every other file. |
---|
95 | */ |
---|
96 | #ifdef ITRON_API_INIT |
---|
97 | #undef ITRON_EXTERN |
---|
98 | #define ITRON_EXTERN |
---|
99 | #else |
---|
100 | #undef ITRON_EXTERN |
---|
101 | #define ITRON_EXTERN extern |
---|
102 | #endif |
---|
103 | |
---|
104 | /** |
---|
105 | * The following (in conjunction with compiler arguments) are used |
---|
106 | * to choose between the use of static inline functions and macro |
---|
107 | * functions. The static inline implementation allows better |
---|
108 | * type checking with no cost in code size or execution speed. |
---|
109 | */ |
---|
110 | #ifdef __GNUC__ |
---|
111 | # define RTEMS_INLINE_ROUTINE static __inline__ |
---|
112 | #else |
---|
113 | # define RTEMS_INLINE_ROUTINE static inline |
---|
114 | #endif |
---|
115 | |
---|
116 | /** |
---|
117 | * The following macro is a compiler specific way to ensure that memory |
---|
118 | * writes are not reordered around certian points. This specifically can |
---|
119 | * impact interrupt disable and thread dispatching critical sections. |
---|
120 | */ |
---|
121 | #ifdef __GNUC__ |
---|
122 | #define RTEMS_COMPILER_MEMORY_BARRIER() asm volatile("" ::: "memory") |
---|
123 | #else |
---|
124 | #define RTEMS_COMPILER_MEMORY_BARRIER() |
---|
125 | #endif |
---|
126 | |
---|
127 | /** |
---|
128 | * The following macro is a compiler specific way to indicate that |
---|
129 | * the method will NOT return to the caller. This can assist the |
---|
130 | * compiler in code generation and avoid unreachable paths. This |
---|
131 | * can impact the code generated following calls to |
---|
132 | * rtems_fatal_error_occurred and _Internal_error_Occurred. |
---|
133 | */ |
---|
134 | #ifdef __GNUC__ |
---|
135 | #define RTEMS_COMPILER_NO_RETURN_ATTRIBUTE \ |
---|
136 | __attribute__ ((noreturn)) |
---|
137 | #else |
---|
138 | #define RTEMS_COMPILER_NO_RETURN_ATTRIBUTE |
---|
139 | #endif |
---|
140 | |
---|
141 | #ifdef RTEMS_POSIX_API |
---|
142 | /** The following is used by the POSIX implementation to catch bad paths. */ |
---|
143 | int POSIX_NOT_IMPLEMENTED( void ); |
---|
144 | #endif |
---|
145 | |
---|
146 | /* |
---|
147 | * Include a base set of files. |
---|
148 | */ |
---|
149 | |
---|
150 | /** |
---|
151 | * XXX: Eventually proc_ptr needs to disappear!!! |
---|
152 | */ |
---|
153 | typedef void * proc_ptr; |
---|
154 | |
---|
155 | #include <stddef.h> |
---|
156 | |
---|
157 | #if !defined( TRUE ) || (TRUE != 1) |
---|
158 | /** Boolean constant TRUE */ |
---|
159 | #undef TRUE |
---|
160 | #define TRUE (1) |
---|
161 | #endif |
---|
162 | |
---|
163 | #if !defined( FALSE ) || (FALSE != 0) |
---|
164 | /** Boolean constant TRUE */ |
---|
165 | #undef FALSE |
---|
166 | #define FALSE (0) |
---|
167 | #endif |
---|
168 | |
---|
169 | #include <rtems/stdint.h> |
---|
170 | #include <rtems/score/cpu.h> /* processor specific information */ |
---|
171 | |
---|
172 | /** |
---|
173 | * This macro is used to obtain the offset of a field in a structure. |
---|
174 | */ |
---|
175 | #define RTEMS_offsetof(type, field) \ |
---|
176 | ((uint32_t ) &(((type *) 0)->field)) |
---|
177 | |
---|
178 | /** |
---|
179 | * The following is the extern for the RTEMS version string. |
---|
180 | * |
---|
181 | * @note The contents of this string are CPU specific. |
---|
182 | */ |
---|
183 | extern const char _RTEMS_version[]; |
---|
184 | |
---|
185 | /** |
---|
186 | * The following is the extern for the RTEMS copyright string. |
---|
187 | */ |
---|
188 | extern const char _Copyright_Notice[]; |
---|
189 | |
---|
190 | /** |
---|
191 | * The following defines the CPU dependent information table. |
---|
192 | */ |
---|
193 | SCORE_EXTERN rtems_cpu_table _CPU_Table; |
---|
194 | |
---|
195 | /* |
---|
196 | * Macros to access CPU Table fields required by ALL ports. |
---|
197 | */ |
---|
198 | |
---|
199 | /** This macro assists in accessing the CPU Specific Configuration Table. */ |
---|
200 | #define rtems_cpu_configuration_get_table() (&_CPU_Table) |
---|
201 | |
---|
202 | |
---|
203 | /** This macro assists in accessing the pretasking BSP hook. */ |
---|
204 | #define rtems_cpu_configuration_get_pretasking_hook() \ |
---|
205 | (_CPU_Table.pretasking_hook) |
---|
206 | |
---|
207 | /** This macro assists in accessing the predriver BSP hook. */ |
---|
208 | #define rtems_cpu_configuration_get_predriver_hook() \ |
---|
209 | (_CPU_Table.predriver_hook) |
---|
210 | |
---|
211 | /** This macro assists in accessing the postdriver BSP hook. */ |
---|
212 | #define rtems_cpu_configuration_get_postdriver_hook() \ |
---|
213 | (_CPU_Table.postdriver_hook) |
---|
214 | |
---|
215 | /** This macro assists in accessing the BSP specific IDLE task entry point. */ |
---|
216 | #define rtems_cpu_configuration_get_idle_task() \ |
---|
217 | (_CPU_Table.idle_task) |
---|
218 | |
---|
219 | /** |
---|
220 | * This macro assists in accessing the field which indicates whether |
---|
221 | * RTEMS is responsible for zeroing the Executive Workspace. |
---|
222 | */ |
---|
223 | #define rtems_cpu_configuration_get_do_zero_of_workspace() \ |
---|
224 | (_CPU_Table.do_zero_of_workspace) |
---|
225 | |
---|
226 | /** This macro assists in accessing the IDLE task stack point size. */ |
---|
227 | #define rtems_cpu_configuration_get_idle_task_stack_size() \ |
---|
228 | (_CPU_Table.idle_task_stack_size) |
---|
229 | |
---|
230 | /** This macro assists in accessing the interrupt stack size. */ |
---|
231 | #define rtems_cpu_configuration_get_interrupt_stack_size() \ |
---|
232 | (_CPU_Table.interrupt_stack_size) |
---|
233 | |
---|
234 | /** This macro assists in accessing the size of the MPCI receiver server. */ |
---|
235 | #define rtems_cpu_configuration_get_extra_mpci_receive_server_stack() \ |
---|
236 | (_CPU_Table.extra_mpci_receive_server_stack) |
---|
237 | |
---|
238 | /** This macro assists in accessing the BSP stack allocation hook. */ |
---|
239 | #define rtems_cpu_configuration_get_stack_allocate_hook() \ |
---|
240 | (_CPU_Table.stack_allocate_hook) |
---|
241 | |
---|
242 | /** This macro assists in accessing the BSP stack allocation free hook. */ |
---|
243 | #define rtems_cpu_configuration_get_stack_free_hook() \ |
---|
244 | (_CPU_Table.stack_free_hook) |
---|
245 | |
---|
246 | /** This macro defines the maximum length of a Classic API name. */ |
---|
247 | #define RTEMS_MAXIMUM_NAME_LENGTH sizeof(rtems_name) |
---|
248 | |
---|
249 | #ifdef __cplusplus |
---|
250 | } |
---|
251 | #endif |
---|
252 | |
---|
253 | #endif |
---|
254 | /* end of include file */ |
---|