tests: add CONFIG_APPLICATION_MEMORY test

Signed-off-by: Andrew Boie <andrew.p.boie@intel.com>

tests/kernel/mem_protect/app_memory/Makefile

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+BOARD ?= qemu_x86
+CONF_FILE = prj.conf
+
+include ${ZEPHYR_BASE}/Makefile.test

tests/kernel/mem_protect/app_memory/prj.conf

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+CONFIG_APPLICATION_MEMORY=y
+CONFIG_ZTEST=y
+

tests/kernel/mem_protect/app_memory/src/Makefile

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+include $(ZEPHYR_BASE)/tests/Makefile.test
+
+obj-y += main.o

tests/kernel/mem_protect/app_memory/src/main.c

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+/*
+ * Copyright (c) 2017 Intel Corporation
+ *
+ * SPDX-License-Identifier: Apache-2.0
+ */
+
+#include <zephyr.h>
+#include <tc_util.h>
+#include <linker/linker-defs.h>
+#include <ztest.h>
+
+struct test_struct {
+	int foo;
+	int bar;
+	char *baz;
+};
+
+/* Check that the __kenrnel* macros work properly */
+struct test_struct __kernel kernel_data = {1, 2, NULL};
+struct test_struct __kernel_bss kernel_bss;
+struct test_struct __kernel_noinit kernel_noinit;
+
+/* Real kernel variable, check it is in the right place */
+extern volatile u64_t _sys_clock_tick_count;
+
+struct test_struct app_data = {3, 4, NULL};
+struct test_struct app_bss;
+struct test_struct __noinit app_noinit;
+
+int data_loc(char *start, char *end, void *ptr)
+{
+	if ((char *)ptr >= start && (char *)ptr < end) {
+		return 1;
+	}
+
+	printk("Address %p outside range %p - %p\n", ptr, start, end);
+	return 0;
+}
+
+int app_loc(void *ptr)
+{
+	return data_loc(__app_ram_start, __app_ram_end, ptr);
+}
+
+int kernel_loc(void *ptr)
+{
+	return data_loc(__kernel_ram_start, __kernel_ram_end, ptr);
+}
+
+void test_app_memory(void)
+{
+	printk("Memory bounds:\n");
+	printk("Application  %p - %p\n", __app_ram_start, __app_ram_end);
+	printk("Kernel       %p - %p\n", __kernel_ram_start, __kernel_ram_end);
+
+	zassert_true(app_loc(&app_data), "not in app memory");
+	zassert_true(app_loc(&app_bss), "not in app memory");
+	zassert_true(app_loc(&app_noinit), "not in app memory");
+
+	zassert_true(kernel_loc(&kernel_data), "not in kernel memory");
+	zassert_true(kernel_loc(&kernel_bss), "not in kernel memory");
+	zassert_true(kernel_loc(&kernel_noinit), "not in kernel memory");
+
+	zassert_true(kernel_loc((void *)&_sys_clock_tick_count),
+		     "not in kernel memory");
+}
+
+void test_main(void)
+{
+	ztest_test_suite(app_memory,
+			 ztest_unit_test(test_app_memory));
+
+	ztest_run_test_suite(app_memory);
+}

tests/kernel/mem_protect/app_memory/testcase.yaml

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+tests:
+-   test:
+        tags: core security
+        arch_whitelist: x86 arm