ci: enabled ldgen mapping check in ci

components/esp_hw_support/linker.lf

@@ -10,4 +10,5 @@ entries:
     rtc_pm (noflash_text)
     rtc_sleep (noflash_text)
     rtc_time (noflash_text)
-    rtc_wdt (noflash_text)
+    if IDF_TARGET_ESP32S3 = n:
+        rtc_wdt (noflash_text)

components/spi_flash/linker.lf

@@ -1,7 +1,8 @@
 [mapping:spi_flash]
 archive: libspi_flash.a
 entries:
-    spi_flash_rom_patch (noflash)
+    if IDF_TARGET_ESP32 = y:
+        spi_flash_rom_patch (noflash)
     spi_flash_chip_generic (noflash)
     spi_flash_chip_issi (noflash)
     spi_flash_chip_mxic (noflash)

tools/ci/check_ldgen_mapping_exceptions.txt

@@ -0,0 +1 @@
+libc

tools/ci/config/build.yml

@@ -114,6 +114,7 @@ build_ssc_esp32s2:
     BUILD_SYSTEM: "cmake"
     TEST_TYPE: "unit_test"
     PYTHON_VER: 3
+    LDGEN_CHECK_MAPPING: 0
   script:
     - ${IDF_PATH}/tools/ci/find_apps_build_apps.sh
     - cd $CI_PROJECT_DIR/tools/unit-test-app
@@ -156,6 +157,7 @@ build_esp_idf_tests_cmake_esp32c3:
     LOG_PATH: ${CI_PROJECT_DIR}/log_${TEST_PREFIX}
     BUILD_PATH: ${CI_PROJECT_DIR}/build_${TEST_PREFIX}
     PYTHON_VER: 3
+    LDGEN_CHECK_MAPPING: 0
   script:
     # it's not possible to build 100% out-of-tree and have the "artifacts"
     # mechanism work, but this is the next best thing

tools/cmake/ldgen.cmake

@@ -56,6 +56,12 @@ function(__ldgen_process_template template output)
 
     idf_build_get_property(config_env_path CONFIG_ENV_PATH)
 
+    if($ENV{LDGEN_CHECK_MAPPING})
+        set(ldgen_check "--check-mapping"
+            "--check-mapping-exceptions=${idf_path}/tools/ci/check_ldgen_mapping_exceptions.txt")
+        message(STATUS "Mapping check enabled in ldgen")
+    endif()
+
     add_custom_command(
         OUTPUT ${output}
         COMMAND ${python} ${idf_path}/tools/ldgen/ldgen.py
@@ -67,6 +73,7 @@ function(__ldgen_process_template template output)
         --env-file  "${config_env_path}"
         --libraries-file ${build_dir}/ldgen_libraries
         --objdump   ${CMAKE_OBJDUMP}
+        ${ldgen_check}
         DEPENDS     ${template} ${ldgen_fragment_files} ${ldgen_depends} ${SDKCONFIG}
     )
 

tools/ldgen/generation.py

@@ -344,14 +344,19 @@ class GenerationModel:
                 try:
                     if not (obj == Mapping.MAPPING_ALL_OBJECTS and symbol is None and
                             scheme_name == GenerationModel.DEFAULT_SCHEME):
-
                         if self.check_mappings and mapping.name not in self.check_mapping_exceptions:
                             if not obj == Mapping.MAPPING_ALL_OBJECTS:
-                                obj_section = sections_infos.get_obj_sections(archive, obj)
-                                if not obj_section:
-                                    message = "'%s\:%s' not found" % (archive, obj)
+                                obj_sections = sections_infos.get_obj_sections(archive, obj)
+                                if not obj_sections:
+                                    message = "'%s:%s' not found" % (archive, obj)
                                     raise GenerationException(message, mapping)
 
+                                if symbol:
+                                    obj_sym = fnmatch.filter(obj_sections, "*%s" % symbol)
+                                    if not obj_sym:
+                                        message = "'%s:%s %s' not found" % (archive, obj, symbol)
+                                        raise GenerationException(message, mapping)
+
                         self._add_mapping_rules(archive, obj, symbol, scheme_name, scheme_dictionary, mapping_rules)
                 except KeyError:
                     message = GenerationException.UNDEFINED_REFERENCE + " to scheme '" + scheme_name + "'."