tests/misc/iterable_sections/src/main.c

/*
 * Copyright (c) 2021 Google LLC
 *
 * SPDX-License-Identifier: Apache-2.0
 */

#include <ztest.h>

struct test_ram {
	int i;
};

#define CHECK_BIT 0x80

/* declare in random order to check that the linker is sorting by name */
STRUCT_SECTION_ITERABLE(test_ram, ram3) = {0x03};
STRUCT_SECTION_ITERABLE(test_ram, ram2) = {0x02};
STRUCT_SECTION_ITERABLE(test_ram, ram4) = {0x04};
STRUCT_SECTION_ITERABLE(test_ram, ram1) = {0x01};

#define RAM_EXPECT 0x01020304

/**
 *
 * @brief Test iterable in read write section.
 *
 */
void test_ram(void)
{
	int out = 0;

	STRUCT_SECTION_FOREACH(test_ram, t) {
		out = (out << 8) | t->i;
		t->i |= CHECK_BIT;
	}

	zassert_equal(out, RAM_EXPECT, "Check value incorrect (got: 0x%08x)", out);

	zassert_equal(ram1.i & CHECK_BIT, CHECK_BIT,
		      "ram1.i check bit incorrect (got: 0x%x)", ram1.i);
	zassert_equal(ram2.i & CHECK_BIT, CHECK_BIT,
		      "ram2.i check bit incorrect (got: 0x%x)", ram2.i);
	zassert_equal(ram3.i & CHECK_BIT, CHECK_BIT,
		      "ram3.i check bit incorrect (got: 0x%x)", ram3.i);
	zassert_equal(ram4.i & CHECK_BIT, CHECK_BIT,
		      "ram4.i check bit incorrect (got: 0x%x)", ram4.i);
}

struct test_rom {
	int i;
};

/* declare in random order to check that the linker is sorting by name */
STRUCT_SECTION_ITERABLE(test_rom, rom1) = {0x10};
STRUCT_SECTION_ITERABLE(test_rom, rom3) = {0x30};
STRUCT_SECTION_ITERABLE(test_rom, rom4) = {0x40};
STRUCT_SECTION_ITERABLE(test_rom, rom2) = {0x20};

#define ROM_EXPECT 0x10203040

/**
 *
 * @brief Test iterable in read only section.
 *
 */
void test_rom(void)
{
	int out = 0;

	STRUCT_SECTION_FOREACH(test_rom, t) {
		out = (out << 8) | t->i;
	}

	zassert_equal(out, ROM_EXPECT, "Check value incorrect (got: 0x%x)", out);
}

/**
 *
 * @brief Test entry point
 *
 */
void test_main(void)
{
	ztest_test_suite(iterable_sections,
			 ztest_unit_test(test_ram),
			 ztest_unit_test(test_rom));
	ztest_run_test_suite(iterable_sections);
}