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xiaozhengsheng
2025-08-19 09:49:41 +08:00
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191
components/libraries/experimental_section_vars/nrf_section.h Normal file
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/**
* Copyright (c) 2016 - 2020, Nordic Semiconductor ASA
*
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without modification,
* are permitted provided that the following conditions are met:
*
* 1. Redistributions of source code must retain the above copyright notice, this
* list of conditions and the following disclaimer.
*
* 2. Redistributions in binary form, except as embedded into a Nordic
* Semiconductor ASA integrated circuit in a product or a software update for
* such product, must reproduce the above copyright notice, this list of
* conditions and the following disclaimer in the documentation and/or other
* materials provided with the distribution.
*
* 3. Neither the name of Nordic Semiconductor ASA nor the names of its
* contributors may be used to endorse or promote products derived from this
* software without specific prior written permission.
*
* 4. This software, with or without modification, must only be used with a
* Nordic Semiconductor ASA integrated circuit.
*
* 5. Any software provided in binary form under this license must not be reverse
* engineered, decompiled, modified and/or disassembled.
*
* THIS SOFTWARE IS PROVIDED BY NORDIC SEMICONDUCTOR ASA "AS IS" AND ANY EXPRESS
* OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
* OF MERCHANTABILITY, NONINFRINGEMENT, AND FITNESS FOR A PARTICULAR PURPOSE ARE
* DISCLAIMED. IN NO EVENT SHALL NORDIC SEMICONDUCTOR ASA OR CONTRIBUTORS BE
* LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
* CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE
* GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT
* OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*
*/
#ifndef NRF_SECTION_H__
#define NRF_SECTION_H__
#include "nordic_common.h"
#ifdef __cplusplus
extern "C" {
#endif
/**
* @defgroup section_vars Section variables
* @ingroup app_common
* @{
*
* @brief Section variables.
*/
//lint -save -e27 -esym(526,*)
#if defined(__ICCARM__)
// Enable IAR language extensions
#pragma language=extended
#endif
/**@brief Macro for obtaining the address of the beginning of a section.
*
* param[in] section_name Name of the section.
* @hideinitializer
*/
#if defined(__CC_ARM)
#define NRF_SECTION_START_ADDR(section_name) &CONCAT_2(section_name, $$Base)
#elif defined(__GNUC__)
#define NRF_SECTION_START_ADDR(section_name) &CONCAT_2(__start_, section_name)
#elif defined(__ICCARM__)
#define NRF_SECTION_START_ADDR(section_name) __section_begin(STRINGIFY(section_name))
#endif
/**@brief Macro for obtaining the address of the end of a section.
*
* @param[in] section_name Name of the section.
* @hideinitializer
*/
#if defined(__CC_ARM)
#define NRF_SECTION_END_ADDR(section_name) &CONCAT_2(section_name, $$Limit)
#elif defined(__GNUC__)
#define NRF_SECTION_END_ADDR(section_name) &CONCAT_2(__stop_, section_name)
#elif defined(__ICCARM__)
#define NRF_SECTION_END_ADDR(section_name) __section_end(STRINGIFY(section_name))
#endif
/**@brief Macro for retrieving the length of a given section, in bytes.
*
* @param[in] section_name Name of the section.
* @hideinitializer
*/
#define NRF_SECTION_LENGTH(section_name) \
((size_t)NRF_SECTION_END_ADDR(section_name) - \
(size_t)NRF_SECTION_START_ADDR(section_name))
/**@brief Macro for creating a section.
*
* @param[in] section_name Name of the section.
* @param[in] data_type Data type of the variables to be registered in the section.
*
* @warning Data type must be word aligned to prevent padding.
* @hideinitializer
*/
#if defined(__CC_ARM)
#define NRF_SECTION_DEF(section_name, data_type) \
extern data_type * CONCAT_2(section_name, $$Base); \
extern void * CONCAT_2(section_name, $$Limit)
#elif defined(__GNUC__)
#define NRF_SECTION_DEF(section_name, data_type) \
extern data_type * CONCAT_2(__start_, section_name); \
extern void * CONCAT_2(__stop_, section_name)
#elif defined(__ICCARM__)
#define NRF_SECTION_DEF(section_name, data_type) \
_Pragma(STRINGIFY(section = STRINGIFY(section_name)));
#endif
/**@brief Macro for declaring a variable and registering it in a section.
*
* @details Declares a variable and registers it in a named section. This macro ensures that the
* variable is not stripped away when using optimizations.
*
* @note The order in which variables are placed in a section is dependent on the order in
* which the linker script encounters the variables during linking.
*
* @param[in] section_name Name of the section.
* @param[in] section_var Variable to register in the given section.
* @hideinitializer
*/
#if defined(__CC_ARM)
#define NRF_SECTION_ITEM_REGISTER(section_name, section_var) \
section_var __attribute__ ((section(STRINGIFY(section_name)))) __attribute__((used))
#elif defined(__GNUC__)
#define NRF_SECTION_ITEM_REGISTER(section_name, section_var) \
section_var __attribute__ ((section("." STRINGIFY(section_name)))) __attribute__((used))
#elif defined(__ICCARM__)
#define NRF_SECTION_ITEM_REGISTER(section_name, section_var) \
__root section_var @ STRINGIFY(section_name)
#endif
/**@brief Macro for retrieving a variable from a section.
*
* @warning The stored symbol can only be resolved using this macro if the
* type of the data is word aligned. The operation of acquiring
* the stored symbol relies on the size of the stored type. No
* padding can exist in the named section in between individual
* stored items or this macro will fail.
*
* @param[in] section_name Name of the section.
* @param[in] data_type Data type of the variable.
* @param[in] i Index of the variable in section.
* @hideinitializer
*/
#define NRF_SECTION_ITEM_GET(section_name, data_type, i) \
((data_type*)NRF_SECTION_START_ADDR(section_name) + (i))
/**@brief Macro for getting the number of variables in a section.
*
* @param[in] section_name Name of the section.
* @param[in] data_type Data type of the variables in the section.
* @hideinitializer
*/
#define NRF_SECTION_ITEM_COUNT(section_name, data_type) \
NRF_SECTION_LENGTH(section_name) / sizeof(data_type)
/** @} */
//lint -restore
#ifdef __cplusplus
}
#endif
#endif // NRF_SECTION_H__

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components/libraries/experimental_section_vars/nrf_section_iter.c Normal file
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/**
* Copyright (c) 2016 - 2020, Nordic Semiconductor ASA
*
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without modification,
* are permitted provided that the following conditions are met:
*
* 1. Redistributions of source code must retain the above copyright notice, this
* list of conditions and the following disclaimer.
*
* 2. Redistributions in binary form, except as embedded into a Nordic
* Semiconductor ASA integrated circuit in a product or a software update for
* such product, must reproduce the above copyright notice, this list of
* conditions and the following disclaimer in the documentation and/or other
* materials provided with the distribution.
*
* 3. Neither the name of Nordic Semiconductor ASA nor the names of its
* contributors may be used to endorse or promote products derived from this
* software without specific prior written permission.
*
* 4. This software, with or without modification, must only be used with a
* Nordic Semiconductor ASA integrated circuit.
*
* 5. Any software provided in binary form under this license must not be reverse
* engineered, decompiled, modified and/or disassembled.
*
* THIS SOFTWARE IS PROVIDED BY NORDIC SEMICONDUCTOR ASA "AS IS" AND ANY EXPRESS
* OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
* OF MERCHANTABILITY, NONINFRINGEMENT, AND FITNESS FOR A PARTICULAR PURPOSE ARE
* DISCLAIMED. IN NO EVENT SHALL NORDIC SEMICONDUCTOR ASA OR CONTRIBUTORS BE
* LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
* CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE
* GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT
* OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*
*/
#include "sdk_common.h"
#if NRF_MODULE_ENABLED(NRF_SECTION_ITER)
#include "nrf_section_iter.h"
#if !defined(__GNUC__)
static void nrf_section_iter_item_set(nrf_section_iter_t * p_iter)
{
ASSERT(p_iter != NULL);
ASSERT(p_iter->p_set != NULL);
ASSERT(p_iter->p_section != NULL);
while (true)
{
if (p_iter->p_section == p_iter->p_set->p_last)
{
// End of the section set.
p_iter->p_item = NULL;
return;
}
if (p_iter->p_section->p_start != p_iter->p_section->p_end)
{
// Not empty section.
p_iter->p_item = p_iter->p_section->p_start;
return;
}
// Next section.
p_iter->p_section++;
}
}
#endif
void nrf_section_iter_init(nrf_section_iter_t * p_iter, nrf_section_set_t const * p_set)
{
ASSERT(p_iter != NULL);
ASSERT(p_set != NULL);
p_iter->p_set = p_set;
#if defined(__GNUC__)
p_iter->p_item = p_iter->p_set->section.p_start;
if (p_iter->p_item == p_iter->p_set->section.p_end)
{
p_iter->p_item = NULL;
}
#else
p_iter->p_section = p_set->p_first;
nrf_section_iter_item_set(p_iter);
#endif
}
void nrf_section_iter_next(nrf_section_iter_t * p_iter)
{
ASSERT(p_iter != NULL);
ASSERT(p_iter->p_set != NULL);
if (p_iter->p_item == NULL)
{
return;
}
p_iter->p_item = (void *)((size_t)(p_iter->p_item) + p_iter->p_set->item_size);
#if defined(__GNUC__)
if (p_iter->p_item == p_iter->p_set->section.p_end)
{
p_iter->p_item = NULL;
}
#else
ASSERT(p_iter->p_section != NULL);
// End of current section reached?
if (p_iter->p_item == p_iter->p_section->p_end)
{
p_iter->p_section++;
nrf_section_iter_item_set(p_iter);
}
#endif
}
#endif // NRF_MODULE_ENABLED(NRF_SECTION_ITER)

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components/libraries/experimental_section_vars/nrf_section_iter.h Normal file
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/**
* Copyright (c) 2016 - 2020, Nordic Semiconductor ASA
*
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without modification,
* are permitted provided that the following conditions are met:
*
* 1. Redistributions of source code must retain the above copyright notice, this
* list of conditions and the following disclaimer.
*
* 2. Redistributions in binary form, except as embedded into a Nordic
* Semiconductor ASA integrated circuit in a product or a software update for
* such product, must reproduce the above copyright notice, this list of
* conditions and the following disclaimer in the documentation and/or other
* materials provided with the distribution.
*
* 3. Neither the name of Nordic Semiconductor ASA nor the names of its
* contributors may be used to endorse or promote products derived from this
* software without specific prior written permission.
*
* 4. This software, with or without modification, must only be used with a
* Nordic Semiconductor ASA integrated circuit.
*
* 5. Any software provided in binary form under this license must not be reverse
* engineered, decompiled, modified and/or disassembled.
*
* THIS SOFTWARE IS PROVIDED BY NORDIC SEMICONDUCTOR ASA "AS IS" AND ANY EXPRESS
* OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
* OF MERCHANTABILITY, NONINFRINGEMENT, AND FITNESS FOR A PARTICULAR PURPOSE ARE
* DISCLAIMED. IN NO EVENT SHALL NORDIC SEMICONDUCTOR ASA OR CONTRIBUTORS BE
* LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
* CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE
* GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT
* OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*
*/
#ifndef NRF_SECTION_ITER_H__
#define NRF_SECTION_ITER_H__
#include <stddef.h>
#include "nrf_section.h"
#include "nrf_assert.h"
#include "app_util.h"
#ifdef __cplusplus
extern "C" {
#endif
/**
* @defgroup nrf_section_iter Section variables iterator
* @ingroup app_common
* @{
*/
/**@brief Single section description structure. */
typedef struct
{
void * p_start; //!< Pointer to the start of section.
void * p_end; //!< Pointer to the end of section.
} nrf_section_t;
/**@brief Set of the sections description structure. */
typedef struct
{
#if defined(__GNUC__)
nrf_section_t section; //!< Description of the set of sections.
/**<
* In case of GCC all sections in the set are sorted and
* placed in contiguous area, because they are treated as
* one section.
*/
#else
nrf_section_t const * p_first; //!< Pointer to the first section in the set.
nrf_section_t const * p_last; //!< Pointer to the last section in the set.
#endif
size_t item_size; //!< Size of the single item in the section.
} nrf_section_set_t;
/**@brief Section iterator structure. */
typedef struct
{
nrf_section_set_t const * p_set; //!< Pointer to the appropriate section set.
#if !defined(__GNUC__)
nrf_section_t const * p_section; //!< Pointer to the selected section.
/**<
* In case of GCC all sections in the set are sorted and
* placed in contiguous area, because they are treated
* as one section.
*/
#endif
void * p_item; //!< Pointer to the selected item in the section.
} nrf_section_iter_t;
/**@brief Create a set of sections.
*
* @note This macro reserves memory for the given set of sections.
*
* @details A set of sections, is an ordered collections of sections.
*
* @param[in] _name Name of the set.
* @param[in] _type Type of the elements stored in the sections.
* @param[in] _count Number of the sections in the set. This parameter is ignored in case of GCC.
* @hideinitializer
*/
#if defined(__GNUC__)
#define NRF_SECTION_SET_DEF(_name, _type, _count) \
\
NRF_SECTION_DEF(_name, _type); \
static nrf_section_set_t const _name = \
{ \
.section = \
{ \
.p_start = NRF_SECTION_START_ADDR(_name), \
.p_end = NRF_SECTION_END_ADDR(_name), \
}, \
.item_size = sizeof(_type), \
}
#else
#define NRF_SECTION_SET_DEF(_name, _type, _count) \
/*lint -save -emacro(14, MACRO_REPEAT_FOR*) */ \
MACRO_REPEAT_FOR(_count, NRF_SECTION_DEF_, _name, _type) \
static nrf_section_t const CONCAT_2(_name, _array)[] = \
{ \
MACRO_REPEAT_FOR(_count, NRF_SECTION_SET_DEF_, _name) \
}; \
/*lint -restore */ \
static nrf_section_set_t const _name = \
{ \
.p_first = CONCAT_2(_name, _array), \
.p_last = CONCAT_2(_name, _array) + ARRAY_SIZE(CONCAT_2(_name, _array)), \
.item_size = sizeof(_type), \
}
#ifndef DOXYGEN
#define NRF_SECTION_DEF_(_priority, _name, _type) \
NRF_SECTION_DEF(CONCAT_2(_name, _priority), _type);
#define NRF_SECTION_SET_DEF_(_priority, _name) \
{ \
.p_start = NRF_SECTION_START_ADDR(CONCAT_2(_name, _priority)), \
.p_end = NRF_SECTION_END_ADDR(CONCAT_2(_name, _priority)), \
},
#endif // DOXYGEN
#endif // __GNUC__
/**@brief Macro to declare a variable and register it in the section set.
*
* @note The order of the section in the set is based on the priority. The order with which
* variables are placed in a section is dependant on the order with which the linker
* encouters the variables during linking.
*
* @param[in] _name Name of the section set.
* @param[in] _priority Priority of the desired section.
* @param[in] _var The variable to register in the given section.
* @hideinitializer
*/
#define NRF_SECTION_SET_ITEM_REGISTER(_name, _priority, _var) \
NRF_SECTION_ITEM_REGISTER(CONCAT_2(_name, _priority), _var)
/**@brief Function for initializing the section set iterator.
*
* @param[in] p_iter Pointer to the iterator.
* @param[in] p_set Pointer to the sections set.
*/
void nrf_section_iter_init(nrf_section_iter_t * p_iter, nrf_section_set_t const * p_set);
/**@brief Function for incrementing iterator.
*
* @param[in] p_iter Pointer to the iterator.
*/
void nrf_section_iter_next(nrf_section_iter_t * p_iter);
/**@brief Function for getting the element pointed to by the iterator.
*
* @param[in] p_iter Pointer to the iterator.
*
* @retval Pointer to the element or NULL if iterator points end of the set.
*/
static inline void * nrf_section_iter_get(nrf_section_iter_t const * p_iter)
{
ASSERT(p_iter);
return p_iter->p_item;
}
/** @} */
#ifdef __cplusplus
}
#endif
#endif // NRF_SECTION_ITER_H__