llext: actual test rework

samples/subsys/llext/shell_loader/sample.yaml

@@ -1,14 +1,17 @@
+common:
+  tags: llext
+  arch_allow:
+    - arm
+    - xtensa
+  filter: not CONFIG_MPU and not CONFIG_MMU and not CONFIG_SOC_SERIES_S32ZE_R52
+  platform_exclude:
+    - nuvoton_pfm_m487 # See #63167
 sample:
   description: Loadable extensions with shell sample
   name: Extension loader shell
 tests:
   sample.llext.shell:
     tags: shell llext
     harness: keyboard
-    filter: not CONFIG_CPU_HAS_MMU and not CONFIG_SOC_SERIES_S32ZE_R52
-    arch_allow: arm
     extra_configs:
-      - CONFIG_ARM_MPU=n
-    # Broken platforms
-    platform_exclude:
-      - nuvoton_pfm_m487 # See #63167
+      - arch:arm:CONFIG_ARM_MPU=n

tests/subsys/llext/hello_world/CMakeLists.txt

@@ -3,18 +3,26 @@
 
 cmake_minimum_required(VERSION 3.20.0)
 find_package(Zephyr REQUIRED HINTS $ENV{ZEPHYR_BASE})
-project(hello_world)
+project(llext_hello_world_test)
 
-if(NOT CONFIG_MODULES OR CONFIG_LLEXT_TEST_HELLO STREQUAL "m")
+target_sources(app PRIVATE
+  src/test/test_llext_simple.c
+)
 
-  set(llext_src_file ${PROJECT_SOURCE_DIR}/hello_world.c)
-  set(llext_bin_file ${PROJECT_BINARY_DIR}/hello_world.llext)
+target_include_directories(app PRIVATE
+  ${ZEPHYR_BASE}/include
+  ${ZEPHYR_BASE}/kernel/include
+  ${ZEPHYR_BASE}/arch/${ARCH}/include
+)
 
-  add_llext_target(hello_world
-    OUTPUT  ${llext_bin_file}
-    SOURCES ${llext_src_file}
-  )
+# Compile a simple hello world llext to an include file
+set(llext_src_file ${PROJECT_SOURCE_DIR}/src/llext/hello_world.c)
+set(llext_bin_file ${ZEPHYR_BINARY_DIR}/hello_world.llext)
+set(llext_inc_file ${ZEPHYR_BINARY_DIR}/include/generated/hello_world.inc)
 
-  set(HELLO_WORLD_LLEXT ${llext_bin_file} PARENT_SCOPE)
+add_llext_target(hello_world
+  OUTPUT  ${llext_bin_file}
+  SOURCES ${llext_src_file}
+)
 
-endif()
+generate_inc_file_for_target(app ${llext_bin_file} ${llext_inc_file})

tests/subsys/llext/Kconfig → tests/subsys/llext/hello_world/Kconfig

@@ -7,6 +7,6 @@ source "Kconfig.zephyr"
 
 config LLEXT_TEST_HELLO
 	tristate "llext hello test"
-	default n
+	default y
 	help
-	  Set to "m" to test hello-world loading
+	  This enables building the hello_world test case.

tests/subsys/llext/hello_world/testcase.yaml

@@ -0,0 +1,27 @@
+common:
+  tags: llext
+  arch_allow:
+    - arm
+    - xtensa
+  filter: not CONFIG_MPU and not CONFIG_MMU and not CONFIG_SOC_SERIES_S32ZE_R52
+  platform_exclude:
+    - nuvoton_pfm_m487 # See #63167
+tests:
+  llext.simple.readonly:
+    arch_exclude: xtensa # for now
+    extra_configs:
+      - arch:arm:CONFIG_ARM_MPU=n
+      - CONFIG_LLEXT_STORAGE_WRITABLE=n
+  llext.simple.writable:
+    extra_configs:
+      - arch:arm:CONFIG_ARM_MPU=n
+      - CONFIG_LLEXT_STORAGE_WRITABLE=y
+  llext.simple.modules_enabled:
+    platform_key:
+      - simulation
+    platform_exclude:
+      - qemu_cortex_a9 # MMU
+    extra_configs:
+      - arch:arm:CONFIG_ARM_MPU=n
+      - CONFIG_MODULES=y
+      - CONFIG_LLEXT_TEST_HELLO=m