test(ulp): add custom linker host tests

Add build-only host tests for LP-core custom linker layouts supplied through the
LINKER option. Cover the positive paths (a full-replacement layout, a
multi-region layout with a fixed-address section, a run-from-HP-mem layout, and
memory protection) and the link-time and configure-time checks (reset-vector
placement, sizing, shared-memory overrun, the MEMPROT RX/RW boundary, a missing
reset vector, and a missing LINKER script).

.gitlab/ci/dependencies/dependencies.yml

@@ -59,6 +59,12 @@
   patterns:
     - host_test_ldgen
 
+"test:host_test_ulp_linker":
+  labels:
+    - host_test
+  patterns:
+    - host_test_ulp_linker
+
 "test:host_test_cli_installer":
   labels:
     - host_test

.gitlab/ci/host-test.yml

@@ -107,6 +107,22 @@ test_ldgen_on_host:
   variables:
     LC_ALL: C.UTF-8
 
+test_lp_core_custom_linker_on_host:
+  extends:
+    - .host_test_template
+    - .rules:test:host_test_ulp_linker
+  script:
+    - cd components/ulp/test_apps/lp_core/host_tests/lp_core_custom_linker
+    - pytest_for_ut .
+
+test_lp_core_custom_linker_buildv2_on_host:
+  extends:
+    - .host_test_template
+    - .rules:test:host_test_ulp_linker
+  script:
+    - cd components/ulp/test_apps/lp_core/host_tests/lp_core_custom_linker_v2
+    - pytest_for_ut .
+
 test_spiffs_on_host:
   extends: .host_test_template
   script:

.gitlab/ci/rules.yml

@@ -48,6 +48,19 @@
 
   - "tools/ldgen/**/*"
 
+.patterns-host_test_ulp_linker: &patterns-host_test_ulp_linker
+  - ".gitlab/ci/host-test.yml"
+
+  - "components/ulp/ld/**/*"
+  - "components/ulp/cmake/**/*"
+  - "components/ulp/CMakeLists*.txt"
+  - "components/ulp/component_ulp_common.cmake"
+  - "components/ulp/project_include.cmake"
+  - "components/ulp/lp_core/**/*"
+  - "components/ulp/test_apps/lp_core/host_tests/**/*"
+  # Shared linker-script preprocessing used by the buildv2 ULP path.
+  - "tools/cmakev2/utilities.cmake"
+
 .patterns-build_system_win: &patterns-build_system_win
   - "tools/test_build_system/**/*"
 
@@ -395,6 +408,17 @@
     - <<: *if-dev-push
       changes: *patterns-host_test_tools
 
+.rules:test:host_test_ulp_linker:
+  rules:
+    - <<: *if-revert-branch
+      when: never
+    - <<: *if-protected-check
+    - <<: *if-label-build-only
+      when: never
+    - <<: *if-label-host_test
+    - <<: *if-dev-push
+      changes: *patterns-host_test_ulp_linker
+
 .rules:test:submodule:
   rules:
     - <<: *if-revert-branch