[331] | 1 | /* ----------------------------------------------------------------------- */
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| 2 | #if TEST == 1
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| 3 | {
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| 4 | struct M P A __s
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| 5 | {
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| 6 | unsigned x : 12;
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| 7 | unsigned char y : 7;
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| 8 | unsigned z : 28;
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| 9 | unsigned a: 4;
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| 10 | unsigned b: 5;
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| 11 | };
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| 12 | TEST_STRUCT(0x333,0x44,0x555555,6,7);
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| 13 | }
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| 14 |
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| 15 | /* ----------------------------------------------------------------------- */
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| 16 | #elif TEST == 2
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| 17 | {
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| 18 | struct M P __s
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| 19 | {
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| 20 | int x: 12;
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| 21 | char y: 6;
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| 22 | long long z:63;
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| 23 | A char a:4;
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| 24 | long long b:2;
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| 25 |
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| 26 | };
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| 27 | TEST_STRUCT(3,30,0x123456789abcdef0LL,5,2);
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| 28 | }
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| 29 |
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| 30 | /* ----------------------------------------------------------------------- */
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| 31 | #elif TEST == 3
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| 32 | {
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| 33 | struct M P __s
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| 34 | {
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| 35 | unsigned x:5, y:5, :0, z:5; char a:5; A short b:5;
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| 36 | };
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| 37 | TEST_STRUCT(21,23,25,6,14);
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| 38 | }
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| 39 |
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| 40 | /* ----------------------------------------------------------------------- */
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| 41 | #elif TEST == 4
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| 42 | {
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| 43 | struct M P __s {
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| 44 | int x : 3;
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| 45 | int : 2;
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| 46 | int y : 1;
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| 47 | int : 0;
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| 48 | int z : 5;
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| 49 | int a : 7;
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| 50 | unsigned int b : 7;
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| 51 | };
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| 52 | TEST_STRUCT(3,1,15,120,120);
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| 53 | }
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| 54 |
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| 55 | /* ----------------------------------------------------------------------- */
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| 56 | #elif TEST == 5
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| 57 | {
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| 58 | struct M P __s {
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| 59 | long long x : 45;
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| 60 | long long : 2;
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| 61 | long long y : 30;
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| 62 | unsigned long long z : 38;
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| 63 | char a; short b;
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| 64 | };
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| 65 | TEST_STRUCT(0x123456789ULL, 120<<25, 120, 0x44, 0x77);
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| 66 | }
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| 67 |
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| 68 | /* ----------------------------------------------------------------------- */
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| 69 | #elif TEST == 6
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| 70 | {
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| 71 | struct M P __s {
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| 72 | int a;
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| 73 | signed char b;
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| 74 | int x : 12, y : 4, : 0, : 4, z : 3;
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| 75 | char d;
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| 76 | };
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| 77 | TEST_STRUCT(1,2,3,4,-3);
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| 78 | }
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| 79 |
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| 80 | /* ----------------------------------------------------------------------- */
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| 81 | #elif defined PACK
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| 82 |
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| 83 | #if PACK
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| 84 | # pragma pack(push,1)
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| 85 | # define P //_P
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| 86 | #else
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| 87 | # define P
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| 88 | #endif
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| 89 |
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| 90 | printf("\n\n" + 2*top);
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| 91 | #define TEST 1
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| 92 | #include SELF
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| 93 | top = 0;
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| 94 | #define TEST 2
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| 95 | #include SELF
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| 96 | #define TEST 3
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| 97 | #include SELF
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| 98 | #define TEST 4
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| 99 | #include SELF
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| 100 | #define TEST 5
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| 101 | #include SELF
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| 102 | #define TEST 6
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| 103 | #include SELF
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| 104 |
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| 105 | #if PACK
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| 106 | # pragma pack(pop)
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| 107 | #endif
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| 108 |
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| 109 | #undef P
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| 110 | #undef PACK
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| 111 |
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| 112 | /* ----------------------------------------------------------------------- */
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| 113 | #elif defined ALIGN
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| 114 |
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| 115 | #if ALIGN
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| 116 | # define A _A(16)
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| 117 | #else
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| 118 | # define A
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| 119 | #endif
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| 120 |
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| 121 | #define PACK 0
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| 122 | #include SELF
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| 123 | #define PACK 1
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| 124 | #include SELF
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| 125 |
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| 126 | #undef A
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| 127 | #undef ALIGN
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| 128 |
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| 129 | /* ----------------------------------------------------------------------- */
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| 130 | #elif defined MS_BF
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| 131 |
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| 132 | #if MS_BF
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| 133 | # ifdef __TINYC__
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| 134 | # pragma comment(option, "-mms-bitfields")
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| 135 | # elif defined __GNUC__
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| 136 | # define M __attribute__((ms_struct))
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| 137 | # endif
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| 138 | #else
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| 139 | # ifdef __TINYC__
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| 140 | # pragma comment(option, "-mno-ms-bitfields")
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| 141 | # elif defined __GNUC__
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| 142 | # define M __attribute__((gcc_struct))
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| 143 | # endif
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| 144 | #endif
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| 145 | #ifndef M
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| 146 | # define M
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| 147 | #endif
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| 148 |
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| 149 | #define ALIGN 0
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| 150 | #include SELF
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| 151 | #define ALIGN 1
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| 152 | #include SELF
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| 153 |
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| 154 | #undef M
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| 155 | #undef MS_BF
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| 156 |
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| 157 | /* ----------------------------------------------------------------------- */
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| 158 | #else
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| 159 |
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| 160 | #include <stdio.h>
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| 161 | #include <string.h>
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| 162 | /* some gcc headers #define __attribute__ to empty if it's not gcc */
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| 163 | #undef __attribute__
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| 164 |
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| 165 | void dump(void *p, int s)
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| 166 | {
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| 167 | int i;
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| 168 | for (i = s; --i >= 0;)
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| 169 | printf("%02X", ((unsigned char*)p)[i]);
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| 170 | printf("\n");
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| 171 | }
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| 172 |
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| 173 | #define pv(m) \
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| 174 | printf(sizeof (s->m + 0) == 8 ? " %016llx" : " %02x", s->m)
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| 175 |
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| 176 | #define TEST_STRUCT(v1,v2,v3,v4,v5) { \
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| 177 | struct __s _s, *s = & _s; \
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| 178 | printf("\n---- TEST %d%s%s%s ----\n" + top, \
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| 179 | TEST, MS_BF?" - MS-BITFIELDS":"", \
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| 180 | PACK?" - PACKED":"", \
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| 181 | ALIGN?" - WITH ALIGN":""); \
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| 182 | memset(s, 0, sizeof *s); \
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| 183 | s->x = -1, s->y = -1, s->z = -1, s->a = -1, s->b = -1; \
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| 184 | printf("bits in use : "), dump(s, sizeof *s); \
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| 185 | s->x = v1, s->y = v2, s->z = v3, s->a += v4, ++s->a, s->b = v5; \
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| 186 | printf("bits as set : "), dump(s, sizeof *s); \
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| 187 | printf("values :"), pv(x), pv(y), pv(z), pv(a), pv(b), printf("\n"); \
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| 188 | printf("align/size : %d %d\n", alignof(struct __s),sizeof(struct __s)); \
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| 189 | }
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| 190 |
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| 191 | #ifdef _MSC_VER
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| 192 | # define _A(n) __declspec(align(n))
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| 193 | # define _P
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| 194 | # define alignof(x) __alignof(x)
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| 195 | #else
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| 196 | # define _A(n) __attribute__((aligned(n)))
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| 197 | # define _P __attribute__((packed))
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| 198 | # define alignof(x) __alignof__(x)
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| 199 | #endif
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| 200 |
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| 201 | #ifndef MS_BITFIELDS
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| 202 | # define MS_BITFIELDS 0
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| 203 | #endif
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| 204 |
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| 205 | #define SELF "95_bitfields.c"
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| 206 |
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| 207 | int top = 1;
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| 208 |
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| 209 | int main()
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| 210 | {
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| 211 | #define MS_BF MS_BITFIELDS
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| 212 | #include SELF
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| 213 | return 0;
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| 214 | }
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| 215 |
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| 216 | /* ----------------------------------------------------------------------- */
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| 217 | #endif
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| 218 | #undef TEST
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