nrf_section_iter.c 3.8 KB

123456789101112131415161718192021222324252627282930313233343536373839404142434445464748495051525354555657585960616263646566676869707172737475767778798081828384858687888990919293949596979899100101102103104105106107108109110111112113114115116117118119120121122123124125
  1. /**
  2. * Copyright (c) 2016 - 2020, Nordic Semiconductor ASA
  3. *
  4. * All rights reserved.
  5. *
  6. * Redistribution and use in source and binary forms, with or without modification,
  7. * are permitted provided that the following conditions are met:
  8. *
  9. * 1. Redistributions of source code must retain the above copyright notice, this
  10. * list of conditions and the following disclaimer.
  11. *
  12. * 2. Redistributions in binary form, except as embedded into a Nordic
  13. * Semiconductor ASA integrated circuit in a product or a software update for
  14. * such product, must reproduce the above copyright notice, this list of
  15. * conditions and the following disclaimer in the documentation and/or other
  16. * materials provided with the distribution.
  17. *
  18. * 3. Neither the name of Nordic Semiconductor ASA nor the names of its
  19. * contributors may be used to endorse or promote products derived from this
  20. * software without specific prior written permission.
  21. *
  22. * 4. This software, with or without modification, must only be used with a
  23. * Nordic Semiconductor ASA integrated circuit.
  24. *
  25. * 5. Any software provided in binary form under this license must not be reverse
  26. * engineered, decompiled, modified and/or disassembled.
  27. *
  28. * THIS SOFTWARE IS PROVIDED BY NORDIC SEMICONDUCTOR ASA "AS IS" AND ANY EXPRESS
  29. * OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
  30. * OF MERCHANTABILITY, NONINFRINGEMENT, AND FITNESS FOR A PARTICULAR PURPOSE ARE
  31. * DISCLAIMED. IN NO EVENT SHALL NORDIC SEMICONDUCTOR ASA OR CONTRIBUTORS BE
  32. * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
  33. * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE
  34. * GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
  35. * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
  36. * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT
  37. * OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
  38. *
  39. */
  40. #include "sdk_common.h"
  41. #if NRF_MODULE_ENABLED(NRF_SECTION_ITER)
  42. #include "nrf_section_iter.h"
  43. #if !defined(__GNUC__)
  44. static void nrf_section_iter_item_set(nrf_section_iter_t * p_iter)
  45. {
  46. ASSERT(p_iter != NULL);
  47. ASSERT(p_iter->p_set != NULL);
  48. ASSERT(p_iter->p_section != NULL);
  49. while (true)
  50. {
  51. if (p_iter->p_section == p_iter->p_set->p_last)
  52. {
  53. // End of the section set.
  54. p_iter->p_item = NULL;
  55. return;
  56. }
  57. if (p_iter->p_section->p_start != p_iter->p_section->p_end)
  58. {
  59. // Not empty section.
  60. p_iter->p_item = p_iter->p_section->p_start;
  61. return;
  62. }
  63. // Next section.
  64. p_iter->p_section++;
  65. }
  66. }
  67. #endif
  68. void nrf_section_iter_init(nrf_section_iter_t * p_iter, nrf_section_set_t const * p_set)
  69. {
  70. ASSERT(p_iter != NULL);
  71. ASSERT(p_set != NULL);
  72. p_iter->p_set = p_set;
  73. #if defined(__GNUC__)
  74. p_iter->p_item = p_iter->p_set->section.p_start;
  75. if (p_iter->p_item == p_iter->p_set->section.p_end)
  76. {
  77. p_iter->p_item = NULL;
  78. }
  79. #else
  80. p_iter->p_section = p_set->p_first;
  81. nrf_section_iter_item_set(p_iter);
  82. #endif
  83. }
  84. void nrf_section_iter_next(nrf_section_iter_t * p_iter)
  85. {
  86. ASSERT(p_iter != NULL);
  87. ASSERT(p_iter->p_set != NULL);
  88. if (p_iter->p_item == NULL)
  89. {
  90. return;
  91. }
  92. p_iter->p_item = (void *)((size_t)(p_iter->p_item) + p_iter->p_set->item_size);
  93. #if defined(__GNUC__)
  94. if (p_iter->p_item == p_iter->p_set->section.p_end)
  95. {
  96. p_iter->p_item = NULL;
  97. }
  98. #else
  99. ASSERT(p_iter->p_section != NULL);
  100. // End of current section reached?
  101. if (p_iter->p_item == p_iter->p_section->p_end)
  102. {
  103. p_iter->p_section++;
  104. nrf_section_iter_item_set(p_iter);
  105. }
  106. #endif
  107. }
  108. #endif // NRF_MODULE_ENABLED(NRF_SECTION_ITER)