Linux Audio

Check our new training course

Embedded Linux Audio

Check our new training course
with Creative Commons CC-BY-SA
lecture materials

Bootlin logo

Elixir Cross Referencer

Open Menu /tests/kernel/common/src/bitfield.c
Loading...
  1
  2
  3
  4
  5
  6
  7
  8
  9
 10
 11
 12
 13
 14
 15
 16
 17
 18
 19
 20
 21
 22
 23
 24
 25
 26
 27
 28
 29
 30
 31
 32
 33
 34
 35
 36
 37
 38
 39
 40
 41
 42
 43
 44
 45
 46
 47
 48
 49
 50
 51
 52
 53
 54
 55
 56
 57
 58
 59
 60
 61
 62
 63
 64
 65
 66
 67
 68
 69
 70
 71
 72
 73
 74
 75
 76
 77
 78
 79
 80
 81
 82
 83
 84
 85
 86
 87
 88
 89
 90
 91
 92
 93
 94
 95
 96
 97
 98
 99
100
101
102
103
104
105
106
107
108
109
110
/*
 * Copyright (c) 2016 Intel Corporation
 *
 * SPDX-License-Identifier: Apache-2.0
 */

#include <zephyr.h>
#include <ztest.h>
#include <arch/cpu.h>

#include <tc_util.h>

#define BIT_INDEX(bit)  (bit >> 3)
#define BIT_VAL(bit)    (1 << (bit & 0x7))
#define BITFIELD_SIZE   512

void test_bitfield(void)
{
	u32_t b1 = 0;
	unsigned char b2[BITFIELD_SIZE >> 3] = { 0 };
	unsigned int bit;
	int ret;

	TC_PRINT("twiddling bits....\n");

	for (bit = 0; bit < 32; ++bit) {
		sys_set_bit((mem_addr_t)&b1, bit);

		zassert_equal(b1, (1 << bit),
			      "sys_set_bit failed on bit %d\n", bit);

		zassert_true(sys_test_bit((mem_addr_t)&b1, bit),
			     "sys_test_bit did not detect bit %d\n", bit);

		sys_clear_bit((mem_addr_t)&b1, bit);
		zassert_equal(b1, 0, "sys_clear_bit failed for bit %d\n", bit);

		zassert_false(sys_test_bit((mem_addr_t)&b1, bit),
			      "sys_test_bit erroneously detected bit %d\n",
			      bit);

		zassert_false(sys_test_and_set_bit((mem_addr_t)&b1, bit),
			      "sys_test_and_set_bit erroneously"
			      " detected bit %d\n", bit);
		zassert_equal(b1, (1 << bit),
			      "sys_test_and_set_bit did not set bit %d\n",
			      bit);
		zassert_true(sys_test_and_set_bit((mem_addr_t)&b1, bit),
			     "sys_test_and_set_bit did not detect bit %d\n",
			     bit);
		zassert_equal(b1, (1 << bit),
			      "sys_test_and_set_bit cleared bit %d\n", bit);

		zassert_true(sys_test_and_clear_bit((mem_addr_t)&b1, bit),
			     "sys_test_and_clear_bit did not detect bit %d\n",
			     bit);
		zassert_equal(b1, 0, "sys_test_and_clear_bit did not clear"
			      " bit %d\n", bit);
		zassert_false(sys_test_and_clear_bit((mem_addr_t)&b1, bit),
			      "sys_test_and_clear_bit erroneously detected"
			      " bit %d\n", bit);
		zassert_equal(b1, 0, "sys_test_and_clear_bit set bit %d\n",
			      bit);
	}

	for (bit = 0; bit < BITFIELD_SIZE; ++bit) {
		sys_bitfield_set_bit((mem_addr_t)b2, bit);
		zassert_equal(b2[BIT_INDEX(bit)], BIT_VAL(bit),
			      "sys_bitfield_set_bit failed for bit %d\n",
			      bit);
		zassert_true(sys_bitfield_test_bit((mem_addr_t)b2, bit),
			     "sys_bitfield_test_bit did not detect bit %d\n",
			     bit);

		sys_bitfield_clear_bit((mem_addr_t)b2, bit);
		zassert_equal(b2[BIT_INDEX(bit)], 0,
			      "sys_bitfield_clear_bit failed for bit %d\n",
			      bit);
		zassert_false(sys_bitfield_test_bit((mem_addr_t)b2, bit),
			      "sys_bitfield_test_bit erroneously detected"
			      " bit %d\n", bit);

		ret = sys_bitfield_test_and_set_bit((mem_addr_t)b2, bit);
		zassert_false(ret, "sys_bitfield_test_and_set_bit erroneously"
			      " detected bit %d\n", bit);

		zassert_equal(b2[BIT_INDEX(bit)], BIT_VAL(bit),
			      "sys_bitfield_test_and_set_bit did not set"
			      " bit %d\n", bit);
		zassert_true(sys_bitfield_test_and_set_bit((mem_addr_t)b2, bit),
			     "sys_bitfield_test_and_set_bit did not detect bit"
			     " %d\n", bit);
		zassert_equal(b2[BIT_INDEX(bit)], BIT_VAL(bit),
			      "sys_bitfield_test_and_set_bit cleared bit %d\n",
			      bit);

		zassert_true(sys_bitfield_test_and_clear_bit((mem_addr_t)b2,
							     bit), "sys_bitfield_test_and_clear_bit did not"
			     " detect bit %d\n", bit);
		zassert_equal(b2[BIT_INDEX(bit)], 0,
			      "sys_bitfield_test_and_clear_bit did not"
			      " clear bit %d\n", bit);
		zassert_false(sys_bitfield_test_and_clear_bit((mem_addr_t)b2,
							      bit), "sys_bitfield_test_and_clear_bit"
			      " erroneously detected bit %d\n", bit);
		zassert_equal(b2[BIT_INDEX(bit)], 0,
			      "sys_bitfield_test_and_clear_bit set bit %d\n",
			      bit);
	}
}