95 lines
4.0 KiB
C
95 lines
4.0 KiB
C
/*
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* Copyright (c) 2006-2022, RT-Thread Development Team
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*
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* SPDX-License-Identifier: Apache-2.0
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*
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* Change Logs:
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* Date Author Notes
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* 2021-06-04 WillianChan first version
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* 2021-06-08 WillianChan support to MS VC++ compiler
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*/
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#ifndef _VAR_EXPORT_H__
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#define _VAR_EXPORT_H__
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#include <rtthread.h>
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/* exported object */
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struct ve_exporter
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{
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const char *module; /* module name */
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const char *identifier; /* module identifier */
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rt_base_t value; /* module value */
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};
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typedef struct ve_exporter ve_exporter_t;
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/* module object */
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struct ve_module
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{
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const ve_exporter_t *begin; /* the first module of the same name */
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const ve_exporter_t *end; /* the last module of the same */
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};
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typedef struct ve_module ve_module_t;
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/* iterator object */
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struct ve_iterator
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{
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const ve_exporter_t *exp_index; /* iterator index */
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const ve_exporter_t *exp_end; /* iterate over exporter */
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};
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typedef struct ve_iterator ve_iterator_t;
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#define VE_NOT_FOUND (0xFFFFFFFFu) /* not found */
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/* exporter's export command */
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#if defined(__ARMCC_VERSION) || defined(__IAR_SYSTEMS_ICC__)
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#define VAR_EXPORT(module, identi, value) \
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const char _vexp_##identi##_module[] RT_SECTION(".rodata.vexp") = #module; \
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const char _vexp_##identi##_identi[] RT_SECTION(".rodata.vexp") = #identi; \
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RT_USED const struct ve_exporter _vexp_##module##identi \
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RT_SECTION("1."#module".VarExpTab."#identi) = \
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{ \
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_vexp_##identi##_module, \
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_vexp_##identi##_identi, \
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value, \
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}
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#elif defined(__GNUC__)
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#define VAR_EXPORT(module, identi, value) \
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const char _vexp_##identi##_module[] RT_SECTION(".rodata.vexp") = #module; \
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const char _vexp_##identi##_identi[] RT_SECTION(".rodata.vexp") = #identi; \
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RT_USED const struct ve_exporter _vexp_##module##identi \
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RT_SECTION(#module".VarExpTab."#identi) = \
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{ \
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_vexp_##identi##_module, \
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_vexp_##identi##_identi, \
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value, \
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}
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#elif defined(_MSC_VER)
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#pragma section("VarExpTab$f",read)
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#define VAR_EXPORT(module, identi, value) \
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const char _vexp_##identi##_module[] RT_SECTION(".rodata.vexp") = #module; \
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const char _vexp_##identi##_identi[] RT_SECTION(".rodata.vexp") = #identi; \
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__declspec(allocate("VarExpTab$f")) \
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RT_USED const struct ve_exporter _vexp_##module##identi = \
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{ \
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_vexp_##identi##_module, \
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_vexp_##identi##_identi, \
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value, \
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}
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#endif
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/* initialize var export */
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int ve_exporter_init(void);
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/* initialize module */
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int ve_module_init(ve_module_t *mod, const char *module);
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/* initialize iterator */
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void ve_iter_init(ve_module_t *mod, ve_iterator_t *iter);
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/* iterate backward */
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const ve_exporter_t *ve_iter_next(ve_iterator_t *iter);
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/* get the value by identifier */
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rt_base_t ve_value_get(ve_module_t *mod, const char *identifier);
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/* check if this value exists in the module*/
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rt_bool_t ve_value_exist(ve_module_t *mod, const char *identifier);
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#endif /* _VAR_EXPORT_H__ */
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