Book a Demo!
CoCalc Logo Icon
StoreFeaturesDocsShareSupportNewsAboutPoliciesSign UpSign In
freebsd
GitHub Repository: freebsd/freebsd-src
 Path: blob/main/tests/include/endian_test.c
39475 views
1
/*-

2
 * Copyright (c) 2021 M. Warner Losh <[email protected]>

3
 *

4
 * SPDX-License-Identifier: BSD-2-Clause

5
 */

6


7
#include <endian.h>

8


9
#include <atf-c.h>

10


11
ATF_TC(endian);

12
ATF_TC_HEAD(endian, tc)

13
{

14
	atf_tc_set_md_var(tc, "descr", "Test swapping macros in <byteswap.h>");

15
}

16


17
ATF_TC_BODY(endian, tc)

18
{

19
	/* glibc doesn't define the {__,}bswap_{16,32,64} */

20
#ifdef __bswap_16

21
	atf_tc_fail_nonfatal("__bswap_16 improperly defined");

22
#endif

23
#ifdef bswap_16

24
	atf_tc_fail_nonfatal("bswap_16 improperly defined");

25
#endif

26
#ifdef __bswap_32

27
	atf_tc_fail_nonfatal("__bswap_32 improperly defined");

28
#endif

29
#ifdef bswap_32

30
	atf_tc_fail_nonfatal("bswap_32 improperly defined");

31
#endif

32
#ifdef __bswap_64

33
	atf_tc_fail_nonfatal("__bswap_64 improperly defined");

34
#endif

35
#ifdef bswap_64

36
	atf_tc_fail_nonfatal("bswap_64 improperly defined");

37
#endif

38


39
	/* glibc doesn't define bswap{16,32,64} */

40
#ifdef bswap16

41
	atf_tc_fail_nonfatal("bswap16 improperly defined");

42
#endif

43
#ifdef bswap32

44
	atf_tc_fail_nonfatal("bswap32 improperly defined");

45
#endif

46
#ifdef bswap64

47
	atf_tc_fail_nonfatal("bswap64 improperly defined");

48
#endif

49


50
	/*

51
	 * glibc defines with two underscores. We don't test for only one since

52
	 * that doesn't interfere.

53
	 */

54
#ifndef __BIG_ENDIAN

55
	atf_tc_fail_nonfatal("__BIG_ENDIAN not defined");

56
#endif

57
#ifndef __LITTLE_ENDIAN

58
	atf_tc_fail_nonfatal("__LITTLE_ENDIAN not defined");

59
#endif

60
#ifndef __PDP_ENDIAN

61
	atf_tc_fail_nonfatal("__PDP_ENDIAN not defined");

62
#endif

63
#ifndef __FLOAT_WORD_ORDER

64
	atf_tc_fail_nonfatal("__FLOAT_WORD_ORDER not defined");

65
#endif

66
#ifndef __BYTE_ORDER

67
	atf_tc_fail_nonfatal("__BYTE_ORDER not defined");

68
#endif

69


70
	/* order to host */

71
#ifdef __BYTE_ORDER

72
#if __BYTE_ORDER == __BIG_ENDIAN

73
#define H16(x) be16toh(x)

74
#define H32(x) be32toh(x)

75
#define H64(x) be64toh(x)

76
#define O16(x) le16toh(x)

77
#define O32(x) le32toh(x)

78
#define O64(x) le64toh(x)

79
#else

80
#define H16(x) le16toh(x)

81
#define H32(x) le32toh(x)

82
#define H64(x) le64toh(x)

83
#define O16(x) be16toh(x)

84
#define O32(x) be32toh(x)

85
#define O64(x) be64toh(x)

86
#endif

87
#endif

88
	ATF_REQUIRE(H16(0x1234) == 0x1234);

89
	ATF_REQUIRE(H32(0x12345678ul) == 0x12345678ul);

90
	ATF_REQUIRE(H64(0x123456789abcdef0ull) == 0x123456789abcdef0ull);

91
	ATF_REQUIRE(O16(0x1234) == __bswap16(0x1234));

92
	ATF_REQUIRE(O32(0x12345678ul) == __bswap32(0x12345678ul));

93
	ATF_REQUIRE(O64(0x123456789abcdef0ull) == __bswap64(0x123456789abcdef0ull));

94
#undef H16

95
#undef H32

96
#undef H64

97
#undef O16

98
#undef O32

99
#undef O64

100


101
	/* host to order */

102
#ifdef __BYTE_ORDER

103
#if __BYTE_ORDER == __BIG_ENDIAN

104
#define H16(x) htobe16(x)

105
#define H32(x) htobe32(x)

106
#define H64(x) htobe64(x)

107
#define O16(x) htole16(x)

108
#define O32(x) htole32(x)

109
#define O64(x) htole64(x)

110
#else

111
#define H16(x) htole16(x)

112
#define H32(x) htole32(x)

113
#define H64(x) htole64(x)

114
#define O16(x) htobe16(x)

115
#define O32(x) htobe32(x)

116
#define O64(x) htobe64(x)

117
#endif

118
#endif

119
	ATF_REQUIRE(H16(0x1234) == 0x1234);

120
	ATF_REQUIRE(H32(0x12345678ul) == 0x12345678ul);

121
	ATF_REQUIRE(H64(0x123456789abcdef0ull) == 0x123456789abcdef0ull);

122
	ATF_REQUIRE(O16(0x1234) == __bswap16(0x1234));

123
	ATF_REQUIRE(O32(0x12345678ul) == __bswap32(0x12345678ul));

124
	ATF_REQUIRE(O64(0x123456789abcdef0ull) == __bswap64(0x123456789abcdef0ull));

125
#undef H16

126
#undef H32

127
#undef H64

128
#undef O16

129
#undef O32

130
#undef O64

131
}

132


133
ATF_TP_ADD_TCS(tp)

134
{

135


136
	ATF_TP_ADD_TC(tp, endian);

137


138
	return atf_no_error();

139
}

140


141