From ce243944375e46e94346bfb3dcbe8c499fc4996b Mon Sep 17 00:00:00 2001
From: Lauren Murphy <lauren.murphy@intel.com>
Date: Mon, 11 Mar 2024 13:20:41 -0700
Subject: [PATCH] llext: add object test case

Adds a case to the simple llext test testing global
non-static object relocation.

Signed-off-by: Lauren Murphy <lauren.murphy@intel.com>
---
 tests/subsys/llext/simple/CMakeLists.txt      |  2 +-
 tests/subsys/llext/simple/src/object_ext.c    | 26 +++++++++++++++++++
 .../llext/simple/src/test_llext_simple.c      |  5 ++++
 3 files changed, 32 insertions(+), 1 deletion(-)
 create mode 100644 tests/subsys/llext/simple/src/object_ext.c

diff --git a/tests/subsys/llext/simple/CMakeLists.txt b/tests/subsys/llext/simple/CMakeLists.txt
index e39f4f8900..4a9f311d8f 100644
--- a/tests/subsys/llext/simple/CMakeLists.txt
+++ b/tests/subsys/llext/simple/CMakeLists.txt
@@ -16,7 +16,7 @@ target_include_directories(app PRIVATE
 )
 
 # generate extension targets foreach extension given by name
-foreach(ext_name hello_world logging relative_jump)
+foreach(ext_name hello_world logging relative_jump object)
   set(ext_src ${PROJECT_SOURCE_DIR}/src/${ext_name}_ext.c)
   set(ext_bin ${ZEPHYR_BINARY_DIR}/${ext_name}.llext)
   set(ext_inc ${ZEPHYR_BINARY_DIR}/include/generated/${ext_name}.inc)
diff --git a/tests/subsys/llext/simple/src/object_ext.c b/tests/subsys/llext/simple/src/object_ext.c
new file mode 100644
index 0000000000..dd2f925022
--- /dev/null
+++ b/tests/subsys/llext/simple/src/object_ext.c
@@ -0,0 +1,26 @@
+/*
+ * Copyright (c) 2024 Intel Corporation.
+ *
+ * SPDX-License-Identifier: Apache-2.0
+ */
+
+/*
+ * This code demonstrates object relocation support.
+ */
+
+#include <stdint.h>
+#include <zephyr/llext/symbol.h>
+#include <zephyr/kernel.h>
+
+/* Test non-static global object relocation */
+int number = 42;
+const char *string = "hello";
+
+void test_entry(void)
+{
+	printk("number: %d\n", number);
+	number = 0;
+	printk("number, updated: %d\n", number);
+	printk("string: %s\n", string);
+}
+LL_EXTENSION_SYMBOL(test_entry);
diff --git a/tests/subsys/llext/simple/src/test_llext_simple.c b/tests/subsys/llext/simple/src/test_llext_simple.c
index 14d224f477..dcb31ac9e4 100644
--- a/tests/subsys/llext/simple/src/test_llext_simple.c
+++ b/tests/subsys/llext/simple/src/test_llext_simple.c
@@ -152,6 +152,11 @@ static LLEXT_CONST uint8_t relative_jump_ext[] __aligned(4) = {
 };
 LLEXT_LOAD_UNLOAD(relative_jump, true)
 
+static LLEXT_CONST uint8_t object_ext[] __aligned(4) = {
+	#include "object.inc"
+};
+LLEXT_LOAD_UNLOAD(object, true)
+
 /*
  * Ensure that EXPORT_SYMBOL does indeed provide a symbol and a valid address
  * to it.