pw_boot_cortex_m: Rearrange unused_space sections

Rearranges unused_space sections in the Cortex-M linker script so that
lld does not emit warnings about ignored memory region assignments. Also
updates the forked target-specific linker scripts to follow the same
behavior.

This also resolves an issue where lld was producing unusually large ELF
files.

Fixes: b/242572211
Change-Id: I407c0691fd59d8b758323e43bfd60caf15e4c224
Reviewed-on: https://pigweed-review.googlesource.com/c/pigweed/pigweed/+/107343
Reviewed-by: Ewout van Bekkum <ewout@google.com>
Pigweed-Auto-Submit: Armando Montanez <amontanez@google.com>
Commit-Queue: Armando Montanez <amontanez@google.com>
Reviewed-by: Tom Craig <tommycraig@gmail.com>
5 files changed
tree: 8c4f10a8c1cbaacf5be5765d99cb6c8b58c5012d
  1. build_overrides/
  2. docker/
  3. docs/
  4. pw_allocator/
  5. pw_analog/
  6. pw_android_toolchain/
  7. pw_arduino_build/
  8. pw_assert/
  9. pw_assert_basic/
  10. pw_assert_log/
  11. pw_assert_tokenized/
  12. pw_assert_zephyr/
  13. pw_base64/
  14. pw_bloat/
  15. pw_blob_store/
  16. pw_bluetooth/
  17. pw_bluetooth_hci/
  18. pw_boot/
  19. pw_boot_cortex_m/
  20. pw_build/
  21. pw_build_info/
  22. pw_build_mcuxpresso/
  23. pw_bytes/
  24. pw_checksum/
  25. pw_chrono/
  26. pw_chrono_embos/
  27. pw_chrono_freertos/
  28. pw_chrono_stl/
  29. pw_chrono_threadx/
  30. pw_chrono_zephyr/
  31. pw_cli/
  32. pw_compilation_testing/
  33. pw_console/
  34. pw_containers/
  35. pw_cpu_exception/
  36. pw_cpu_exception_cortex_m/
  37. pw_crypto/
  38. pw_digital_io/
  39. pw_docgen/
  40. pw_doctor/
  41. pw_env_setup/
  42. pw_file/
  43. pw_function/
  44. pw_fuzzer/
  45. pw_hdlc/
  46. pw_hex_dump/
  47. pw_i2c/
  48. pw_i2c_mcuxpresso/
  49. pw_interrupt/
  50. pw_interrupt_cortex_m/
  51. pw_interrupt_zephyr/
  52. pw_kvs/
  53. pw_libc/
  54. pw_log/
  55. pw_log_android/
  56. pw_log_basic/
  57. pw_log_null/
  58. pw_log_rpc/
  59. pw_log_string/
  60. pw_log_tokenized/
  61. pw_log_zephyr/
  62. pw_malloc/
  63. pw_malloc_freelist/
  64. pw_metric/
  65. pw_minimal_cpp_stdlib/
  66. pw_module/
  67. pw_multisink/
  68. pw_package/
  69. pw_persistent_ram/
  70. pw_polyfill/
  71. pw_preprocessor/
  72. pw_presubmit/
  73. pw_protobuf/
  74. pw_protobuf_compiler/
  75. pw_random/
  76. pw_result/
  77. pw_ring_buffer/
  78. pw_router/
  79. pw_rpc/
  80. pw_rust/
  81. pw_snapshot/
  82. pw_software_update/
  83. pw_span/
  84. pw_spi/
  85. pw_status/
  86. pw_stm32cube_build/
  87. pw_stream/
  88. pw_string/
  89. pw_symbolizer/
  90. pw_sync/
  91. pw_sync_baremetal/
  92. pw_sync_embos/
  93. pw_sync_freertos/
  94. pw_sync_stl/
  95. pw_sync_threadx/
  96. pw_sync_zephyr/
  97. pw_sys_io/
  98. pw_sys_io_arduino/
  99. pw_sys_io_baremetal_lm3s6965evb/
  100. pw_sys_io_baremetal_stm32f429/
  101. pw_sys_io_emcraft_sf2/
  102. pw_sys_io_mcuxpresso/
  103. pw_sys_io_stdio/
  104. pw_sys_io_stm32cube/
  105. pw_sys_io_zephyr/
  106. pw_system/
  107. pw_target_runner/
  108. pw_thread/
  109. pw_thread_embos/
  110. pw_thread_freertos/
  111. pw_thread_stl/
  112. pw_thread_threadx/
  113. pw_tls_client/
  114. pw_tls_client_boringssl/
  115. pw_tls_client_mbedtls/
  116. pw_tokenizer/
  117. pw_tool/
  118. pw_toolchain/
  119. pw_trace/
  120. pw_trace_tokenized/
  121. pw_transfer/
  122. pw_unit_test/
  123. pw_varint/
  124. pw_watch/
  125. pw_web/
  126. pw_work_queue/
  127. targets/
  128. third_party/
  129. ts/
  130. zephyr/
  131. .bazelignore
  132. .bazelrc
  133. .clang-format
  134. .clang-tidy
  135. .eslintrc.json
  136. .gitattributes
  137. .gitignore
  138. .gn
  139. .prettierrc.js
  140. .pylintrc
  141. activate.bat
  142. Android.bp
  143. AUTHORS
  144. bootstrap.bat
  145. bootstrap.sh
  146. BUILD.bazel
  147. BUILD.gn
  148. BUILDCONFIG.gn
  149. CMakeLists.txt
  150. jest.config.ts
  151. Kconfig.zephyr
  152. LICENSE
  153. modules.gni
  154. OWNERS
  155. package-lock.json
  156. package.json
  157. PIGWEED_MODULES
  158. PW_PLUGINS
  159. README.md
  160. rollup.config.js
  161. tsconfig.json
  162. WORKSPACE
README.md

Pigweed

Pigweed is an open source collection of embedded-targeted libraries–or as we like to call them, modules. These modules are building blocks and infrastructure that enable faster and more reliable development on small-footprint MMU-less 32-bit microcontrollers like the STMicroelectronics STM32L452 or the Nordic nRF52832.

For more information please see our website: https://pigweed.dev/.

Links