1 /*
2 * Copyright (c) 2019 Nordic Semiconductor ASA.
3 *
4 * SPDX-License-Identifier: Apache-2.0
5 */
6
7 #include <zephyr/ztest.h>
8 #include <zephyr/linker/linker-defs.h>
9 #include <zephyr/internal/syscall_handler.h>
10
11 static volatile int test_flag;
12
ram_function(void)13 __ramfunc static void ram_function(void)
14 {
15 test_flag = 1;
16 }
17
ZTEST(ramfunc,test_ramfunc)18 ZTEST(ramfunc, test_ramfunc)
19 {
20 int init_flag, post_flag;
21
22 init_flag = test_flag;
23 zassert_true(init_flag == 0, "Test flag not initialized to zero");
24
25 /* Verify that the .ramfunc section is not empty, it is located
26 * inside SRAM, and that ram_function(.) is located inside
27 * the .ramfunc section.
28 */
29 zassert_true((uint32_t)&__ramfunc_size != 0,
30 ".ramfunc linker section is empty");
31 zassert_true(((uint32_t)&__ramfunc_start >= (uint32_t)&_image_ram_start)
32 && ((uint32_t)&__ramfunc_end < (uint32_t)&_image_ram_end),
33 ".ramfunc linker section not in RAM");
34 zassert_true(
35 (((uint32_t)&__ramfunc_start) <= (uint32_t)ram_function) &&
36 (((uint32_t)&__ramfunc_end) > (uint32_t)ram_function),
37 "ram_function not loaded into .ramfunc");
38
39 /* If we build with User Mode support, verify that the
40 * ram_function(.) is user (read) accessible.
41 */
42 #if defined(CONFIG_USERSPACE)
43 zassert_true(arch_buffer_validate((void *)&__ramfunc_start,
44 (size_t)&__ramfunc_size, 0) == 0 /* Success */,
45 ".ramfunc section not user accessible");
46 #endif /* CONFIG_USERSPACE */
47
48 /* Execute the function from SRAM. */
49 ram_function();
50
51 /* Verify that the function is executed successfully. */
52 post_flag = test_flag;
53 zassert_true(post_flag == 1,
54 "ram_function() execution failed.");
55 }
56 /**
57 * @}
58 */
59
